CN111411006A - Skid-mounted device and method for desulfurization of hydrocarbon gas-containing high-pressure acid gas complex iron - Google Patents

Abstract

The invention discloses a high-pressure acid gas complex iron desulfurization skid-mounted device and a desulfurization method containing hydrocarbon gas, comprising an acid gas separation skid, an absorption skid, a solution flashing skid, at least one regeneration skid, a sulfur sedimentation skid, a sulfur Slurry filter skid, sulfur melting skid and circulating pump skid, wherein the acid gas liquid separation skid includes a first liquid separation tank, the absorption skid includes an absorption tank and a second liquid separation tank connected with the absorption tank, and the solution flashing skid includes flash evaporation Tank, regeneration skid includes regeneration tank and separation tank connected with regeneration tank, sulfurization sedimentation skid includes sedimentation tank, sulfur slurry filter skid includes filter and collection tank connected with filter, sulfur melting skid includes sulfur melting kettle and melting tank. The cooling collection tank connected to the sulfur kettle. Modular design is adopted in the process, and skid-mounted design and construction are used in engineering. It can realize single well in-situ desulfurization and recovery of valuable natural gas resources in oil and gas fields in deserts, Gobi and remote areas that are not suitable for on-site construction. It is easy to move, disassemble and install. .

Description

A kind of high-pressure acid gas complex iron desulfurization skid-mounted device and desulfurization method containing hydrocarbon gas

technical field

The invention relates to the technical field of hydrogen sulfide removal devices and processes, in particular to a high-pressure acid gas complex iron desulfurization skid-mounted device containing hydrocarbon gas and a desulfurization method.

Background technique

The natural gas production of the sulfur-containing (mainly H ₂ S) gas fields in China accounts for more than 60% of the national total, and the sulfur recovered from the sulfur-containing natural gas accounts for about 30% of the sulfur production in China. At present, the process of centralized treatment of sulfur-bearing natural gas in China is very mature. The designed treatment scale is usually above 100x10 ⁴ m ³ /d, and the equipment investment is over 100 million yuan. Claus sulfur recovery; for single wells with well-developed surrounding townships, many townships, dense population, roads and railways, there are problems such as large floor space and difficulty in demolition of on-site station construction. From the perspective of safety and demolition, there will be certain hidden dangers and difficulties; the content of sulfide is not too low, but it is not suitable for Claus sulfur recovery conditions, and it is impossible to desulfurize natural gas for its use; in addition, for The treatment method of natural gas with very low sulfide content is mature, and the solid iron oxide method can be used. For some stations located in remote areas and their surrounding areas, it is not yet possible to desulfurize natural gas for its use. It is impossible to build large-scale equipment on-site, and it is impossible to desulfurize and recycle the discovered natural gas. Therefore, these gas wells have not been put into development for many years, which has seriously affected the recovery of exploration and drilling costs.

In order to overcome the lack of appeal and the shortcomings of the traditional natural gas desulfurization purification process itself, the complex iron natural gas desulfurization technology directly converts the sulfide in the natural gas into elemental sulfur while desulfurizing, thereby simplifying the process flow, facilitating operation, and reducing investment. It is suitable for In-situ desulfurization and purification of wellhead natural gas. The oxidation regeneration and sulfur concentration of the traditional complex iron desulfurization technology are carried out in an oxidation regeneration tank. For the conditions with high potential sulfur content, the oxidation regeneration tank is very large and needs to be constructed on site. For remote places, this brings quite difficult.

SUMMARY OF THE INVENTION

In view of the above-mentioned technical problems, the present invention provides a high-pressure acid gas complex iron desulfurization skid-mounted device and a desulfurization method that are easy to move and install and disassemble.

In order to achieve the above object, the high-pressure acid gas complex iron desulfurization skid-mounted device containing hydrocarbon gas designed by the present invention includes an acid gas separation skid, an absorption skid, a solution flashing skid, at least one regeneration skid, a sulfur sedimentation skid, Sulfur slurry filter skid, sulfur melting skid and circulating pump skid, wherein the acid gas liquid separation skid includes a first liquid separation tank, the absorption skid includes an absorption tank and a second liquid separation tank connected with the absorption tank, and the solution flashing skid includes a flashing tank The steaming tank, the regeneration skid includes a regeneration tank and a separation tank connected to the regeneration tank, the sulfurization sedimentation skid includes a sedimentation tank, the sulfur slurry filter skid includes a filter and a collection tank connected to the filter, and the sulfur melting skid includes a sulfur melting kettle and a The cooling collection tank connected to the sulfur melting kettle.

Further, it also includes a desalted water skid, and the desalted water outlet W0 of the desalted water skid is respectively connected with the first desalted water inlet W1 of the absorption tank, the desalted water inlet W2 of the regeneration tank, the fifth desalted water inlet W5 of the settling tank, and the filter. The sixth desalinated water inlet W6 of the machine is connected.

Further, it also includes a fan skid, the air outlet of the fan skid is connected to the air inlet of the regeneration tank.

Further, the regeneration skid includes three serially connected first regeneration skids, second regeneration skids, and third regeneration skids, and the first regeneration skid includes a first regeneration tank and a third separation tank connected with the first regeneration tank. The second regeneration skid includes a second regeneration tank and a fourth separation tank connected with the second regeneration tank, and the third regeneration skid includes a third regeneration tank and a fifth separation tank connected with the third regeneration tank.

Further, the sewage outlet z of the first separation tank in the acid gas separation skid is connected with the external sewage pool, and the first outlet b of the second separation tank is connected with the second inlet c of the absorption tank of the absorption skid; The tail gas outlet d of the two-separation tank is connected to the next process through the discharge pipeline, the second outlet i of the absorption tank is connected to the third inlet j of the flash tank in the solution flashing skid, and the low-pressure gas outlet M of the flash tank is connected to the low-pressure The gas pipeline is connected, the third outlet k of the flash tank is connected with the inlet of the regeneration tank in the regeneration skid, the waste air outlet after regeneration of the separation tank is connected with the waste air discharge pipeline, and the outlet of the regeneration tank is connected with the outlet of the sedimentation tank in the sulfur sedimentation skid. The seventh inlet r is connected, the desulfurizer lean liquid outlet e of the sedimentation tank is connected with the circulating inlet f of the circulating pump in the circulating pump skid, the circulating outlet g of the circulating pump is connected with the desulfurizing liquid inlet h of the absorption tank, and the seventh outlet of the sedimentation tank is connected. s is connected to the eighth inlet t of the filter in the sulfur slurry filter skid through a pump, the eighth outlet v of the collection tank is connected to the ninth inlet J of the settling tank through a pump, and the ninth outlet u of the filter is connected to the molten sulfur skid through a pump. The tenth inlet w of the middle sulfur melting kettle is connected, the tenth outlet y of the sulfur melting kettle is connected with the subsequent process, and the eleventh outlet x of the cooling collection tank is connected with the eleventh inlet Q of the filter through a pump.

Further, the sewage outlet z of the first separation tank in the acid gas separation skid is connected with the external sewage pool, and the first outlet b of the second separation tank is connected with the second inlet c of the absorption tank of the absorption skid; The tail gas outlet d of the two-separation tank is connected to the next process through the discharge pipeline, the second outlet i of the absorption tank is connected to the third inlet j of the flash tank in the solution flashing skid, and the low-pressure gas outlet M of the flash tank is connected to the low-pressure The gas pipeline is connected, the third outlet k of the flash tank is connected with the fourth inlet l of the first regeneration tank in the first regeneration skid, and the first outlet D of the waste air after regeneration of the third separator tank is connected with the waste air discharge pipeline, The fourth outlet m of the first regeneration tank is connected with the fifth inlet n of the second regeneration tank in the second regeneration skid. The fifth outlet o of the tank is connected with the sixth inlet p of the third regeneration tank in the third regeneration skid; The sixth outlet q is connected with the seventh inlet r of the sedimentation tank in the sulfur sedimentation skid, the desulfurization agent lean liquid outlet e of the sedimentation tank is connected with the circulating inlet f of the circulating pump in the circulating pump skid, and the circulating outlet g of the circulating pump is connected with the desulfurization tank of the absorption tank. The liquid inlet h is connected, the seventh outlet s of the sedimentation tank is connected to the eighth inlet t of the filter in the sulphur slurry filter skid through the pump, the eighth outlet v of the collecting tank is connected to the ninth inlet J of the sedimentation tank through the pump, and the filter The ninth outlet u is connected with the tenth inlet w of the sulfur melting kettle in the sulfur melting skid through the pump, the tenth outlet y of the sulfur melting kettle is connected with the subsequent process, and the eleventh outlet x of the cooling collection tank is connected by the pump and the filter. The eleventh inlet Q is connected.

Also provide a kind of desulfurization method of the high-pressure acid gas complex iron desulfurization skid-mounted device containing hydrocarbon gas as follows:

The high-pressure acid gas containing hydrocarbon gas enters the first liquid separation tank in the acid gas liquid separation skid from the first inlet a of the acid gas liquid separation skid, and the separated free liquid flows out from the sewage outlet z of the first liquid separation tank. The gas phase after the liquid flows out from the first outlet b of the first separation tank, enters the absorption skid from the second inlet c of the absorption skid, and is absorbed by the gas phase distributor in the absorption tank. The gas phase hydrogen sulfide enters the liquid phase and is absorbed by the ferric iron The organic complex is oxidized to sulfur, the desulfurization catalyst is converted into ferrous organic complex, the purified gas is defoamed through the second liquid separator, and then exits from the tail gas outlet d and enters the post-process through the discharge pipeline. The rich liquid of the desulfurization catalyst is at the system pressure. It flows out from the second outlet i of the absorption tank and enters the flash tank in the solution flashing skid from the third inlet j of the solution flashing skid, and the dissolved hydrocarbon gas is resolved through the pressure regulating valve. The gas enters the low-pressure gas pipeline through the low-pressure gas outlet M of the flash tank, the desulfurization catalyst rich liquid flows out from the third outlet k of the flash tank, and enters the first regeneration of the first regeneration skid from the fourth inlet l of the first regeneration skid. In the tank, the regeneration air of the fan skid enters the first regeneration tank from the first air inlet B of the first regeneration skid for bubbling regeneration, and oxidizes the complex ferrous in the rich liquid of the desulfurization catalyst to complex iron. After the third liquid separation tank is separated, the waste air flows out from the first outlet D of the regenerated waste air of the third liquid separation tank in the first regeneration skid and enters the waste air discharge pipeline, and the desulfurization catalyst solution entrains sulfur from the first The fourth outlet m of the regeneration tank flows out and enters the second regeneration tank of the second regeneration skid from the fifth inlet n of the second regeneration skid, and the regeneration air of the fan skid enters the second regeneration skid from the second air inlet E of the second regeneration skid. The regeneration tank is regenerated by bubbling, and the complex ferrous in the rich solution of the desulfurization catalyst is oxidized to complex iron. The second outlet F of the waste air flows out and enters the waste air discharge pipeline. Under the action of bubbling, the desulfurization catalyst solution entrains sulfur and flows out from the fifth outlet o of the second regeneration tank, and enters the third regeneration skid from the sixth inlet p of the third regeneration skid. In the third regeneration tank of the regeneration skid, the regeneration air of the fan skid enters the third regeneration tank for bubbling regeneration from the third air inlet G of the third regeneration skid, and oxidizes the complex ferrous in the rich liquid of the desulfurization catalyst to complex iron. After regeneration, the waste air flows out from the third outlet H of the regenerated waste air from the fifth liquid separation tank in the third regeneration skid and enters the waste air discharge pipe after the liquid separation of the fifth liquid separation tank. The solution entrained sulfur flows out from the sixth outlet q of the third regeneration tank, and enters the sedimentation tank of the sulfur sedimentation skid from the seventh inlet r of the sulfur sedimentation skid. The liquid outlet e is drawn out by the circulating pump in the circulating pump skid, and the desulfurization liquid inlet h is pumped into the absorption tank, and enters the absorption tank for spray absorption to complete the circulation of the desulfurization catalyst solution; the sulfur slurry is drawn out by the pump in the sulfur slurry sedimentation skid from the sedimentation tank. The seventh outlet s flows out, enters the filter from the eighth inlet t of the sulphur slurry filter skid and carries out liquid-solid separation, and the filtrate flows out from the eighth outlet v of the collecting tank after being collected by the collecting tank, from the ninth inlet J of the sulfur settling skid Enter The sedimentation tank, the sulfur paste flows out from the ninth outlet u of the filter, enters the sulfur melting kettle from the tenth inlet w of the sulfur melting skid, and the liquid sulfur flows out from the tenth outlet y of the sulfur melting kettle into the post-process sulfur molding, and the molten sulfur is formed. The supernatant liquid produced in the cooling collection tank flows out from the eleventh outlet x of the cooling collection tank after being cooled and collected by the cooling collection tank, and enters the filter from the eleventh inlet Q of the sulfur slurry filter skid for washing.

Compared with the prior art, the present invention has the following advantages: according to the principle of complex iron desulfurization technology, the present invention adopts modular design in technology, and skid-mounted design and construction in engineering, which can be used in desert, The oil and gas fields in the Gobi and remote areas can realize the desulfurization and recovery of precious natural gas resources in a single well, and it is convenient to move, disassemble and install.

Description of drawings

Fig. 1 is the schematic flow chart of the high-pressure acid gas complex iron desulfurization skid-mounted device of the present invention.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in Figure 1, the high-pressure acid gas complex iron desulfurization skid-mounted device containing hydrocarbon gas comprises acid gas separation skid 1, absorption skid 2, solution flashing skid 3, at least one regeneration skid, sulfur sedimentation skid 7, The sulfur slurry filtering skid 8 , the sulfur melting skid 9 and the circulating pump skid 10 . In this embodiment, the regeneration skid includes three first regeneration skids 4 , second regeneration skids 5 , and third regeneration skids 6 that are connected in series. The acid gas separation skid 1 includes a first separation tank 11, the absorption skid 2 includes an absorption tank 21 and a second separation tank 22 connected to the absorption tank 21, the solution flashing skid 3 includes a flash tank 31, and the first The regeneration skid 4 includes a first regeneration tank 41 and a third separation tank 42 connected with the first regeneration tank 41 , and the second regeneration skid 5 includes a second regeneration tank 51 and a fourth separation tank connected with the second regeneration tank 51 52, the third regeneration skid 6 includes the third regeneration tank 61 and the fifth separation tank 62 connected with the third regeneration tank 61, the sulfurization sedimentation skid 7 includes the sedimentation tank 71, and the sulfur slurry filter skid 8 includes a filter 81 and a filter The collecting tank 82 connected with the machine 81, the sulfur melting skid 9 includes a sulfur melting kettle 91 and a cooling collecting tank 92 connected with the sulfur melting kettle 91. At the same time, the desalinated water outlet W0 of the desalted water skid 12 is respectively connected with the first desalted water inlet W1 of the absorption tank 21, the second desalted water inlet W2 of the first regeneration tank 41, the third desalted water inlet W3 of the second regeneration tank 51, The fourth desalinated water inlet W4 of the third regeneration tank 61, the fifth desalted water inlet W5 of the settling tank 71, and the sixth desalted water inlet W6 of the filter 81 are connected, and the desalted water skid 12 is used to supply the absorption skid, regeneration skid, sulfur The sedimentation skid and the sulphur slurry filter skid are replenished and flushed; the air outlet of the fan skid 11 is respectively connected to the first air inlet B of the first regeneration tank, the second air inlet E of the second regeneration tank, and the third inlet of the third regeneration sedimentation tank. The tuyere G is connected, and the fan skid 9 is used to blow air to the regeneration skid.

Wherein, the sewage outlet z of the first liquid separation tank 11 in the acid gas separation skid 1 is connected with the external sewage tank, and the first outlet b of the second liquid separation tank 21 is connected with the second inlet c of the absorption tank 21 of the absorption skid 2 The tail gas outlet d of the second liquid separation tank 22 is connected with the next process through the discharge pipeline, and the second outlet i of the absorption tank 21 is connected with the third inlet j of the flash tank 31 in the solution flash skid 3, and the flash tank 31 The low-pressure gas outlet M is connected with the low-pressure gas pipeline, the third outlet k of the flash tank 31 is connected with the fourth inlet 1 of the first regeneration tank 41 in the first regeneration skid 4, and the regeneration waste air of the third separation tank 42 The first outlet D is connected to the waste air discharge pipeline, the fourth outlet m of the first regeneration tank 41 is connected to the fifth inlet n of the second regeneration tank 51 in the second regeneration skid 5, and the waste after regeneration of the fourth separation tank 52 is connected. The second air outlet F is connected with the waste air discharge pipeline, and the fifth outlet o of the second regeneration tank 51 is connected with the sixth inlet p of the third regeneration tank 61 in the third regeneration skid 6. After the regeneration of the fifth separation tank 62 The third outlet H of waste air is connected with the waste air discharge pipeline, the sixth outlet q of the third regeneration tank 61 is connected with the seventh inlet r of the sedimentation tank 71 in the sulfur sedimentation skid 7, and the desulfurization agent lean liquid outlet e of the sedimentation tank 71 is connected to In the circulating pump skid 10, the circulating inlet f of the circulating pump 101 is connected, the circulating outlet g of the circulating pump 101 is connected with the desulfurization liquid inlet h of the absorption tank 21, and the seventh outlet s of the sedimentation tank 71 is filtered through the pump and the sulfur slurry filter skid 8. The eighth inlet t of the filter 81 is connected, the eighth outlet v of the collecting tank 82 is connected to the ninth inlet J of the settling tank 71 through a pump, and the ninth outlet u of the filter 81 is connected to the sulfur melting kettle 91 in the sulfur melting skid 9 through a pump. The tenth inlet w of the sulphur melting kettle 91 is connected to the tenth inlet w, the tenth outlet y of the sulfur melting kettle 91 is connected to the subsequent process, and the eleventh outlet x of the cooling collection tank 92 is connected to the eleventh inlet Q of the filter 81 through a pump.

The technological process of the high-pressure acid gas complex iron desulfurization skid-mounted device containing hydrocarbon gas of the present invention is as follows:

High pressure acid gas from outside hydrocarbon-containing gas (high pressure refers to acid gas with pressure greater than 0.6Mpa, acid gas with pressure higher than 0.6Mpa hydrocarbon-containing gas from acid crude oil associated gas, acid natural gas from high-pressure gas wells) from acid gas liquid separation skid 1 The first inlet a enters the first separator tank 11 in the acid gas separator 1, the separated free liquid flows out from the sewage outlet z of the first separator tank 11, and the gas phase after the liquid separation flows from the first separator 21 The first outlet b flows out, enters the absorption tank 21 in the absorption skid 3 from the second inlet c of the absorption skid 2 and is bubbling and absorbed by the gas-phase distributor, and the gas-phase hydrogen sulfide enters the liquid phase by the ferric organic complex (referred to as complex). combined iron) is oxidized to sulfur, the desulfurization catalyst is converted into ferrous iron organic complex (complexed ferrous complex for short), and the purified gas goes out from the tail gas outlet d after the second liquid separation tank 22 is defoamed and enters the post-process through the discharge pipeline, The desulfurization catalyst rich liquid flows out from the second outlet i of the absorption tank 21 under the action of the system pressure, and enters the flash tank 31 in the solution flashing skid 3 from the third inlet j of the solution flashing skid 3, and is analyzed by the pressure regulating valve. Dissolved hydrocarbon gas is discharged, and the resolved hydrocarbon gas enters the low-pressure gas pipeline through the low-pressure gas outlet M of the flash tank 31, and the desulfurization catalyst rich liquid flows out from the third outlet k of the flash tank 31, and flows out from the outlet of the first regeneration skid 4. The fourth inlet 1 enters the first regeneration tank 41 in the first regeneration skid 4, and the regeneration air of the fan skid 11 enters the first regeneration tank 41 from the first air inlet B of the first regeneration skid 4 for bubbling regeneration, and the desulfurization catalyst is regenerated by bubbling. The complexed ferrous iron in the rich liquid is oxidized to complexed iron, and after the regeneration, the waste air passes through the third liquid separation tank 42 after liquid separation, and the waste air first outlet D after the regeneration of the third liquid separation tank 42 in the first regeneration skid 4 It flows out into the waste air discharge pipe, and the desulfurization catalyst solution entrains sulfur under the action of bubbling and flows out from the fourth outlet m of the first regeneration tank 41, and enters the second regeneration skid 5 from the fifth inlet n of the second regeneration skid 5. In the second regeneration tank 51, the regeneration air of the fan skid 11 enters the second regeneration tank 51 from the second air inlet E of the second regeneration skid 5 for bubbling regeneration, and oxidizes the complex ferrous in the rich liquid of the desulfurization catalyst to complex Iron, the waste air after regeneration flows out from the second outlet F of the waste air after the regeneration of the fourth separation tank 52 in the second regeneration skid 5 and enters the waste air discharge pipeline, and is pushed by the bubbling. Under the action of the desulfurization catalyst solution, the entrained sulfur flows out from the fifth outlet o of the second regeneration tank 52 and enters the third regeneration tank 61 of the third regeneration skid 6 from the sixth inlet p of the third regeneration skid 6. The regeneration of the fan skid 11 The air enters the third regeneration tank 61 from the third air inlet G of the third regeneration skid 6 for bubbling regeneration, and oxidizes the complexed ferrous iron in the rich liquid of the desulfurization catalyst to complexed iron, and the waste air passes through the fifth separation tank after regeneration. After 62 liquid separation, the waste air third outlet H flows out from the regeneration rear of the fifth separation tank 62 in the third regeneration skid 6 and enters the waste air discharge pipeline, and the desulfurizer solution entrains sulfur from the third regeneration tank under the driving action of bubbling. The sixth outlet q of 61 flows out, enters in the sedimentation tank 71 of the sulfur sedimentation skid 7 from the seventh inlet r of the sulfur sedimentation skid 7, and the sulfur settles to the bottom of the sedimentation tank 71 cone, removing the The sulfur catalyst lean liquid is drawn out from the desulfurization agent lean liquid outlet e by the circulating pump 101 in the circulating pump sled 10, and is pumped into the desulfurization liquid inlet h of the absorption tank 21, and enters the absorption tank for spray absorption to complete the circulation of the desulfurization catalyst solution; The pump in the sulphur slurry sedimentation skid 7 draws out from the seventh outlet s of the sedimentation tank 71, and enters the filter 81 from the eighth inlet t of the sulphur slurry filter skid 8 for liquid-solid separation, and the filtrate is collected in the collection tank 82 from the collection tank The eighth outlet v of 82 flows out, enters the settling tank 71 from the ninth inlet J of the sulfur sedimentation skid 7, and the sulfur paste flows out from the ninth outlet u of the filter 81, enters the sulfur melting kettle from the tenth inlet w of the sulfur melting skid 9 In 91, the liquid sulfur flows out from the tenth outlet y of the sulfur-melting kettle 91 and enters the post-process sulfur molding, and the supernatant liquid produced in the molten sulfur is cooled and collected by the cooling collection tank 92 and flows out from the eleventh outlet x of the cooling collection tank 92. , enter the filter 81 from the eleventh inlet Q of the sulfur slurry filter skid 8 for washing.

The above-mentioned desulfurization catalyst is an organic complex weakly alkaline aqueous solution containing ferric iron.

According to the principle of complex iron desulfurization process, the invention adopts modular design in process and skid-mounted design and construction in engineering, which can realize single well in-situ desulfurization and recovery of precious metals in oil and gas fields in deserts, Gobi and remote areas that are not suitable for on-site construction. natural gas resources.

Claims (7)

1. The utility model provides a carbohydride gas's high pressure sour gas complex iron desulfurization skid-mounted device which characterized in that: including sour gas divides liquid sledge (1), absorption sledge (2), solution flash sledge (3), at least one regeneration sledge, sulphur subsides sledge (7), sulphur thick liquid filters sledge (8), melt sulphur sledge (9) and circulating pump sledge (10), wherein, sour gas divides liquid sledge (1) including first minute fluid reservoir (11), absorption sledge (2) are including adsorption tank (21) and second minute fluid reservoir (22) that link to each other with adsorption tank (21), solution flash sledge (3) are including flash drum (31), regeneration sledge includes the regenerator tank and the minute fluid reservoir that links to each other with the regenerator tank, vulcanize and subside sledge (7) including subsider (71), sulphur thick liquid filters sledge (8) including filter (81) and collecting vat (82) that link to each other with filter (81), melt sulphur sledge (9) are including melt sulphur cauldron (91) and the cooling collecting vat (92) that links to each other with melt sulphur cauldron (91).

2. The skid-mounted device for desulfurization of hydrocarbon gas-containing high-pressure acid gas complexed iron as claimed in claim 1, wherein: the desalting water skid (12) is further provided, and a desalted water outlet W0 of the desalting water skid (12) is respectively connected with a first desalted water inlet W1 of the absorption tank (21), a desalted water inlet W2 of the regeneration tank, a fifth desalted water inlet W5 of the settling tank (71) and a sixth desalted water inlet W6 of the filter (81).

3. The skid-mounted device for desulfurization of hydrocarbon gas-containing high-pressure acid gas complexed iron as claimed in claim 1, wherein: the device also comprises a fan sledge (11), wherein an air outlet of the fan sledge (11) is connected with an air inlet of the regeneration tank.

4. The skid-mounted device for desulfurization of hydrocarbon gas-containing high-pressure acid gas complexed iron as claimed in claim 1, wherein: the regeneration sledge comprises a first regeneration sledge (4), a second regeneration sledge (5) and a third regeneration sledge (6) which are sequentially connected in series, the first regeneration sledge (4) comprises a first regeneration groove (41) and a third liquid dividing tank (42) connected with the first regeneration groove (41), the second regeneration sledge (5) comprises a second regeneration groove (51) and a fourth liquid dividing tank (52) connected with the second regeneration groove (51), and the third regeneration sledge (6) comprises a third regeneration groove (61) and a fifth liquid dividing tank (62) connected with the third regeneration groove (61).

5. The skid-mounted device for desulfurization of hydrocarbon gas-containing high-pressure acid gas complexed iron as claimed in claim 1, wherein: a sewage outlet z of a first liquid separation tank (11) in the acid gas liquid separation sledge (1) is connected with an external sewage pool, and a first outlet b of a second liquid separation tank (21) is connected with a second inlet c of an absorption tank (21) of the absorption sledge (2); a tail gas outlet d of the second liquid separation tank (22) is connected with the next process through a discharge pipeline, a second outlet i of the absorption tank (21) is connected with a third inlet j of a flash tank (31) in the solution flash sledge (3), a low-pressure gas outlet M of the flash tank (31) is connected with a low-pressure gas pipeline, a third outlet k of the flash tank (31) is connected with an inlet of a regeneration tank in the regeneration sledge, a waste air outlet of the liquid separation tank after regeneration is communicated with a waste air discharge pipeline, an outlet of the regeneration tank is connected with a seventh inlet r of a settling tank (71) in the sulfur settling sledge (7), a desulfurizing agent lean solution outlet e of the settling tank (71) is connected with a circulation inlet f of a circulation pump (101) in a circulation pump sledge (10), a circulation outlet g of the circulation pump (101) is connected with a desulfurizing solution inlet h of the absorption tank (21), a seventh outlet s of the settling tank (71) is connected with an eighth inlet t of a sulfur slurry filtering machine (81) in a sulfur slurry filtering sledge (8) through a pump, an eighth outlet v of the collecting tank (82) is connected with a ninth inlet J of the settling tank (71) through a pump, a ninth outlet u of the filter (81) is connected with a tenth inlet w of a sulfur melting kettle (91) in the sulfur melting skid (9) through a pump, a tenth outlet y of the sulfur melting kettle (91) is connected with a subsequent process, and an eleventh outlet x of the cooling collecting tank (92) is connected with an eleventh inlet Q of the filter (81) through a pump.

6. The skid-mounted device for desulfurization of hydrocarbon gas-containing high-pressure acid gas complex iron according to claim 4, characterized in that: a sewage outlet z of a first liquid separation tank (11) in the acid gas liquid separation sledge (1) is connected with an external sewage pool, and a first outlet b of a second liquid separation tank (21) is connected with a second inlet c of an absorption tank (21) of the absorption sledge (2); the tail gas outlet D of the second liquid separation tank (22) is connected with the next process through a discharge pipeline, the second outlet i of the absorption tank (21) is connected with the third inlet j of a flash tank (31) in a solution flash sledge (3), the low-pressure gas outlet M of the flash tank (31) is connected with a low-pressure gas pipeline, the third outlet k of the flash tank (31) is connected with the fourth inlet l of a first regeneration tank (41) in a first regeneration sledge (4), the first regenerated waste air outlet D of a third liquid separation tank (42) is communicated with a waste air discharge pipeline, the fourth outlet M of the first regeneration tank (41) is connected with the fifth inlet n of a second regeneration tank (51) in a second regeneration sledge (5), the second regenerated waste air outlet F of a fourth liquid separation tank (52) is communicated with a waste air discharge pipeline, the fifth outlet o of the second regeneration tank (51) is connected with the sixth inlet p of a third regeneration tank (61) in a third regeneration sledge (6), a third outlet H of the regenerated waste air of the fifth liquid separation tank (62) is communicated with a waste air discharge pipeline, a sixth outlet q of the third regeneration tank (61) is connected with a seventh inlet r of a settling tank (71) in a sulfur settling sledge (7), a desulfurizer lean solution outlet e of the settling tank (71) is connected with a circulating inlet f of a circulating pump (101) in a circulating pump sledge (10), a circulating outlet g of the circulating pump (101) is connected with a doctor solution inlet H of an absorption tank (21), a seventh outlet s of the settling tank (71) is connected with an eighth inlet t of a filter (81) in a sulfur slurry filtering sledge (8) through a pump, an eighth outlet v of a collecting tank (82) is connected with a ninth inlet J of the settling tank (71) through a pump, a ninth outlet u of the filter (81) is connected with a tenth inlet w of a sulfur melting kettle (91) in the sulfur melting sledge (9) through a pump, and a tenth outlet y of the sulfur melting kettle (91) is connected with a subsequent process, the eleventh outlet x of the cooling collection tank (92) is connected to the eleventh inlet Q of the filter (81) by a pump.

7. A desulfurization method of a skid-mounted device for desulfurization of high-pressure acid gas complex iron containing hydrocarbon gas is characterized by comprising the following steps: the desulfurization method comprises the following steps:

high-pressure acid gas containing hydrocarbon gas enters a first liquid separation tank (11) in the acid gas liquid separation sledge (1) from a first inlet a of the acid gas liquid separation sledge (1), separated free liquid flows out from a sewage outlet z of the first liquid separation tank (11), a gas phase after liquid separation flows out from a first outlet b of the first liquid separation tank (21), enters an absorption tank (21) in the absorption sledge (3) from a second inlet c of the absorption sledge (2) and is absorbed by bubbling of a gas phase distributor, gas-phase hydrogen sulfide enters a liquid phase and is oxidized into sulfur by a ferric iron organic complex, a desulfurization catalyst is converted into a ferrous iron organic complex, purified gas is defoamed by a second liquid separation tank (22) and then flows out from a tail gas outlet d and enters a post-procedure through a discharge pipeline, desulfurization catalyst rich liquid flows out from a second outlet i of the absorption tank (21) under the action of system pressure, and enters a flash evaporation sledge (31) in the solution flash evaporation sledge (3) from a third inlet j of the solution flash evaporation sledge (, the dissolved hydrocarbon gas is resolved through a pressure regulating valve, the resolved hydrocarbon gas enters a low-pressure fuel gas pipeline through a low-pressure air outlet M of a flash tank (31), the desulfurization catalyst rich solution flows out of a third outlet k of the flash tank (31) and enters a first regeneration groove (41) in a first regeneration sledge (4) from a fourth inlet l of the first regeneration sledge (4), the regeneration air of a fan sledge (11) enters the first regeneration groove (41) from a first air inlet B of the first regeneration sledge (4) for bubbling regeneration, the complex iron in the desulfurization catalyst rich solution is oxidized into complex iron, the regenerated waste air is subjected to liquid separation through a third liquid separation tank (42), flows out of a first waste air outlet D of a third liquid separation tank (42) in the first regeneration sledge (4) after regeneration and enters a waste air discharge pipeline, and the desulfurization catalyst solution flows out of a fourth outlet M of the first regeneration groove (41) under the pushing action of bubbling, The regeneration air of the fan sledge (11) enters a second regeneration groove (51) of the second regeneration sledge (5) from a fifth inlet n of the second regeneration sledge (5), enters the second regeneration groove (51) from a second air inlet E of the second regeneration sledge (5) for bubbling regeneration, the complex ferrite in the desulfurization catalyst rich solution is oxidized into complex iron, the regenerated waste air is subjected to liquid separation by a fourth liquid separation tank (52), flows out from a second outlet F of the regenerated waste air of the fourth liquid separation tank (52) in the second regeneration sledge (5) into a waste air discharge pipeline, carries with the desulfurization catalyst solution under the pushing action of bubbling, the sulfur flows out from a fifth outlet o of the second regeneration groove (52), enters a third regeneration groove (61) of the third regeneration sledge (6) from a sixth inlet p of the third regeneration sledge (6), and bubbles the regeneration air of the fan sledge (11) enters a third regeneration groove (61) from a third air inlet G of the third regeneration sledge (6), the method comprises the steps of oxidizing complex ferrous iron in a desulfurization catalyst rich solution into complex iron, separating regenerated waste air through a fifth liquid separation tank (62), then flowing out of a third outlet H of the regenerated waste air of a fifth liquid separation tank (62) in a third regeneration sledge (6) to enter a waste air discharge pipeline, allowing a desulfurizer solution carrying sulfur to flow out of a sixth outlet q of a third regeneration groove (61) under the pushing action of bubbling, allowing the sulfur to enter a settling groove (71) of the sulfur settling sledge (7) from a seventh inlet r of the sulfur settling sledge (7), settling the sulfur to the bottom of a cone of the settling groove (71), pumping desulfurization catalyst lean solution out of a circulating pump (101) in a circulating pump sledge (10) from a desulfurization catalyst lean solution outlet e, pumping into a desulfurization solution inlet H of an absorption tank (21), and allowing the desulfurization catalyst solution to enter the absorption tank for spray absorption, so as to complete the circulation of the desulfurization catalyst solution; the sulfur slurry is pumped by a pump in the sulfur slurry settling sledge (7), flows out from a seventh outlet s of the settling tank (71), enters a filter (81) from an eighth inlet t of the sulfur slurry filtering sledge (8) for liquid-solid separation, filtrate flows out from an eighth outlet v of the collecting tank (82) after being collected by the collecting tank (82), enters a settling tank (71) from a ninth inlet J of the sulfur settling sledge (7), sulfur paste flows out from a ninth outlet u of the filter (81), enters a sulfur melting kettle (91) from a tenth inlet w of the sulfur melting sledge (9), liquid sulfur flows out from a tenth outlet y of the sulfur melting kettle (91) and enters a post-process sulfur molding, supernatant liquid generated in the molten sulfur flows out of an eleventh outlet x of the cooling collecting tank (92) after being cooled and collected by the cooling collecting tank (92) and enters the filter (81) for washing from an eleventh inlet Q of the sulfur slurry filtering sledge (8).

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