CN120437817B - A spray-type ammonia high-efficiency absorption tower - Google Patents
A spray-type ammonia high-efficiency absorption towerInfo
- Publication number
- CN120437817B CN120437817B CN202510940160.2A CN202510940160A CN120437817B CN 120437817 B CN120437817 B CN 120437817B CN 202510940160 A CN202510940160 A CN 202510940160A CN 120437817 B CN120437817 B CN 120437817B
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- absorption
- chamber
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- spray
- ammonia
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/58—Ammonia
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/73—After-treatment of removed components
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/24—Sulfates of ammonium
- C01C1/242—Preparation from ammonia and sulfuric acid or sulfur trioxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
本发明公开了一种喷淋式氨水高效吸收塔，属于吸收塔技术领域，包括基座和高压水泵，基座内设有储液腔，基座上方设有塔体框架，塔体框架内安装有吸收总成，吸收总成包括树形拓扑管道、氨气吸收组件和旋喷分离组件，高压水泵安装在基座的外侧壁。本发明通过设置旋喷分离组件，利用强旋流产生的中心负压，通过边缘抽吸环主动吸附逃逸废气回旋流室，防止氨气逃逸，同时利用离心力将吸收液中的硫酸铵颗粒甩离并抛向吸收室内壁，通过设置氨气吸收组件，在沸石吸附层、检测电极和电动阀的协同作用下，当局部沸石吸附层饱和时，可仅关闭该区域的支路并更换沸石或填料，通过设置树形拓扑管道，可以均匀分配含氨气体，并为不停机维护创造条件。
The present invention discloses a spray-type ammonia water high-efficiency absorption tower, which belongs to the technical field of absorption towers. The tower includes a base and a high-pressure water pump. The base is provided with a liquid storage chamber, and a tower frame is provided above the base. An absorption assembly is installed in the tower frame. The absorption assembly includes a tree-shaped topology pipeline, an ammonia absorption component and a rotary spray separation component. The high-pressure water pump is installed on the outer wall of the base. The present invention sets a rotary spray separation component, utilizes the central negative pressure generated by the strong vortex, and actively absorbs the escaped exhaust gas into the vortex flow chamber through the edge suction ring to prevent ammonia from escaping. At the same time, the centrifugal force is used to throw the ammonium sulfate particles in the absorption liquid away and toward the inner wall of the absorption chamber. By setting the ammonia absorption component, under the coordinated action of the zeolite adsorption layer, the detection electrode and the electric valve, when the local zeolite adsorption layer is saturated, only the branch in the area can be closed and the zeolite or filler can be replaced. By setting the tree-shaped topology pipeline, the ammonia-containing gas can be evenly distributed and conditions are created for non-stop maintenance.
Description
Technical Field
The invention relates to the technical field of absorption towers, in particular to a spray type ammonia water efficient absorption tower.
Background
Ammonia gas is a common atmospheric pollutant which widely exists in waste gas in the industries of chemical industry, pharmacy, cultivation, chemical fertilizer production and the like, and ammonia sulfate generated by neutralization reaction of absorption liquid such as dilute sulfuric acid and the like with ammonia gas is a mainstream technology for treating ammonia-containing waste gas;
In the running process of the existing spray absorption tower, when high-speed waste gas impacts a spray layer, in a nozzle layout gap or a spray coverage weak area, gas dynamic pressure can exceed the surface tension and gravity action of a water curtain, so that the water curtain is squeezed or torn upwards to form a local low-resistance channel, the subsequent waste gas can escape preferentially along the channel, and part of gas directly penetrates the spray layer without gas-liquid contact reaction, so that the gas containing pollutants is discharged;
When dilute sulfuric acid absorbs ammonia gas for neutralization, supersaturation crystallization of ammonium sulfate is easy to generate. The existing spray absorption tower adopts an absorption liquid circulation process, so that crystals enter a packing layer along with circulation liquid to deposit and grow, and finally, packing is blocked, once the packing is blocked, the mass transfer efficiency can be drastically reduced, shutdown cleaning is required, and the production continuity is seriously affected;
Meanwhile, when the existing spray absorption tower works, waste gas to be treated is input into the tower body from the side wall of the tower body, so that the waste gas containing ammonia is easily distributed unevenly on the section of the tower, a local high concentration area or bias flow phenomenon is formed, and the adsorption efficiency is influenced;
therefore, a spray-type ammonia water high-efficiency absorption tower is provided to solve the problems.
Disclosure of Invention
The invention aims to solve the problems that waste gas of an absorption tower is possibly discharged directly without treatment, a filler is easy to block and the gas is uneven in an absorption section in the prior art, and provides a spray type ammonia water efficient absorption tower.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The utility model provides a high-efficient absorption tower of spray-type aqueous ammonia, includes base, high-pressure water pump and high-pressure transfer line, be equipped with the stock solution chamber in the base, the base top is equipped with the tower body frame, the tower body frame includes open bottom support, middle part support and top fixed disk, install the absorption assembly in the tower body frame, the absorption assembly includes the tree topology pipeline that is used for distributing the ammonia gas, is used for the ammonia absorption subassembly of core gas-liquid mass transfer reaction and is used for separating the separation subassembly of spouting soon of ammonium sulfate granule, the high-pressure water pump is installed at the lateral wall of base for carry the absorption liquid pressurization in the stock solution chamber to spout the separation subassembly soon;
The ammonia absorption assembly is positioned at the end part in the middle support and comprises a barrel, the outer side wall of the barrel is provided with radiating fins radiating by natural wind, the proper reaction temperature in the absorption process can be maintained, and an absorption chamber for capturing ammonium sulfate and carrying out gas-liquid mass transfer reaction is arranged in the barrel;
the cyclone separation assembly is located above the ammonia absorption assembly and comprises a spray pipe, and cyclone separation nozzles are mounted on the inner side walls of the bottom of the spray pipe and can generate high-speed rotating atomized liquid drops.
Preferably, the tree topology pipeline comprises a main shunt tube, a shunt branch tube, a confluence branch tube and a confluence exhaust tube, wherein the input end of the main shunt tube penetrates through and is fixedly connected to the bottom of the liquid storage cavity, the air inlet tube penetrating through the side wall of the base is fixedly connected to the outer side wall of the pipe section of the main shunt tube, the main shunt tube and the shunt branch tube are fixedly connected and jointly fixedly installed in the bottom support, and the output end of the shunt branch tube and the input end of the confluence branch tube are fixedly provided with electric valves.
Preferably, the converging branch pipe is fixedly connected with the converging exhaust pipe, the bottom of the converging branch pipe is fixedly connected with the top fixing plate, and a demister is fixedly installed in the converging exhaust pipe to intercept mist.
Preferably, the cyclone separation nozzle comprises a cyclone chamber and an edge suction ring, the outer side wall of the cyclone chamber is fixedly connected with a water inlet pipe communicated with the high-pressure infusion tube, the setting direction of the water inlet pipe is tangential to the circumference of the cyclone chamber so as to endow fluid angular momentum, a constraint nozzle is arranged at the bottom of the cyclone chamber, and the size of the constraint nozzle is far smaller than the diameter of the chamber so as to maintain high pressure and strong cyclone in the chamber.
Preferably, the bottom of the edge suction ring is fixedly connected with the top of the swirl chamber, the input end of the edge suction ring is close to the inner side wall of the spray pipe, and negative pressure generated by strong swirl is utilized to adsorb waste gas breaking through the water curtain.
Preferably, an installation sleeve is arranged in the absorption chamber, a gap is formed between the outer side wall of the installation sleeve and the inner side wall of the absorption chamber, a zeolite adsorption layer for adsorbing ammonium sulfate is filled in the gap, and a detection electrode is arranged at the bottom of the zeolite adsorption layer.
Preferably, the bottom of installation cover and the inner wall fixed connection of barrel just are equipped with the through-hole that supplies the shower water backward flow, the inside of installation cover is equipped with the constant head tank, the installation cover has regular packing through the constant head tank pin joint to provide efficient gas-liquid mass transfer surface.
Preferably, the structured packing comprises a corrugated plate packing module and a honeycomb packing module, wherein the outer side walls of the corrugated plate packing module and the honeycomb packing module are respectively provided with a fixing pin, the fixing pins are connected with the inner wall of the installation sleeve in a pin manner, the corrugated plate packing module is installed in a cylinder body at the bottom of the middle support, and the honeycomb packing module is installed in the cylinder body at the top of the middle support.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the invention, through the arrangement of the rotary spraying separation assembly, the central negative pressure area generated by strong rotational flow can be utilized, the escaped waste gas breaking through the edge of the water curtain is actively adsorbed through the edge suction ring, the escaped waste gas is pumped into the rotational flow chamber and is captured and mixed by the absorbing liquid rotating at a high speed, so that the escape of ammonia gas is prevented, and meanwhile, the centrifugal force generated by rotational flow can effectively throw ammonium sulfate solid particles in the absorbing liquid away and throw the ammonium sulfate solid particles towards the inner wall of the absorbing chamber, so that the primary separation of gas, liquid and solid is realized, and the structured packing below is protected.
2. According to the invention, by arranging the ammonia absorption assembly and combining the cooperative action of the zeolite absorption layer and the detection electrode and the partition-controlled electric valve, modularization and partition of the ammonia absorption assembly are realized, so that when partial saturation is detected, only the branch of the corresponding region can be closed and the cylinder body of the region can be disassembled for zeolite replacement or filler replacement, and the operation of the whole absorption tower is not required to be stopped, thereby remarkably improving the maintainability and continuous operation capability of the system.
3. According to the invention, the tree-shaped topological pipeline is arranged, and the waste gas is uniformly distributed to the plurality of branch pipes after entering the main branch pipe, so that the uniform distribution of the gas on the absorption section is ensured, the bias flow is avoided, the precondition of maintenance without shutdown is realized through the branch pipes of the plurality of branches, and the heat dissipation efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a spray-type ammonia water efficient absorption tower according to the present invention;
FIG. 2 is a sectional view of the inner structure of the base in the spray-type ammonia water high-efficiency absorption tower;
FIG. 3 is an assembly diagram of the whole structure of a spray-type ammonia water efficient absorption tower provided by the invention;
FIG. 4 is a schematic diagram of the overall structure of an adsorption assembly in a spray-type ammonia water efficient absorption tower according to the present invention;
FIG. 5 is a sectional view showing the internal structure of an ammonia absorption assembly and a spray pipe in a spray type ammonia water high-efficiency absorption tower according to the present invention;
FIG. 6 is a sectional view of a swirl separation nozzle in a spray-type ammonia water efficient absorption tower according to the present invention;
FIG. 7 is an assembly diagram of a cylinder and a honeycomb packing module in a spray-type ammonia water efficient absorption tower according to the present invention;
FIG. 8 is a sectional view showing the internal structure of an ammonia absorption assembly in a spray-type ammonia water high-efficiency absorption tower according to the present invention;
FIG. 9 is a flow chart of the purification treatment of the spray type ammonia water high-efficiency absorption tower.
In the figure, 1, a base; 2, a high-pressure water pump, 201, a high-pressure infusion tube, 3, a bottom bracket, 4, a middle bracket, 5, a top fixing disk, 6, a cylinder, 7, an absorption chamber, 8, a spray tube, 9, a cyclone separation nozzle, 10, a main shunt tube, 11, a shunt branch tube, 12, a confluence branch tube, 13, a confluence exhaust tube, 14, an electric valve, 15, a cyclone chamber, 16, a water inlet tube, 17, an edge suction ring, 18, a constraint nozzle, 19, a mounting sleeve, 20, a zeolite adsorption layer, 21, a corrugated plate filler module, 22 and a honeycomb filler module.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and include, for example, "connected to," whether fixedly connected to, detachably connected to, or integrally connected to, mechanically connected to, electrically connected to, directly connected to, indirectly connected to, and in communication with each other via an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
1-9, A spray type ammonia water high-efficiency absorption tower comprises a base 1, a high-pressure water pump 2 and a high-pressure infusion tube 201, wherein a liquid storage cavity is arranged in the base 1 and used for storing absorption liquid (sulfuric acid solution), a tower body frame is arranged above the base 1 and comprises an open bottom bracket 3, a middle bracket 4 and a top fixing disc 5, heat dissipation and maintenance are facilitated, an absorption assembly is arranged in the tower body frame and comprises a tree topology pipeline for distributing ammonia-containing gas, an ammonia absorption assembly for core gas-liquid mass transfer reaction and a rotary spraying separation assembly for separating ammonium sulfate particles, and the high-pressure water pump 2 is arranged on the outer side wall of the base 1 and used for conveying the absorption liquid in the liquid storage cavity to the rotary spraying separation assembly in a pressurized mode;
The ammonia absorption assembly is positioned at the end part in the middle support 4 and comprises a cylinder body 6, the outer side wall of the cylinder body 6 is provided with radiating fins radiating by natural wind, natural wind introduced in the open space in the middle of the tower body can be used for carrying out convection radiation, heat generated by the neutralization reaction of ammonia and dilute sulfuric acid is effectively led out, the temperature in the cylinder body 6 is maintained in a proper range, and an absorption chamber 7 for capturing ammonium sulfate and carrying out gas-liquid mass transfer reaction is arranged in the cylinder body 6;
the cyclone separation assembly is located above the ammonia absorption assembly and comprises a spray pipe 8, a cyclone separation nozzle 9 is arranged on the inner side wall of the bottom of the spray pipe 8, high-speed rotating atomized liquid drops can be generated, and meanwhile, the high-speed rotating liquid drops have centrifugal force and can throw away ammonium sulfate solid particles in liquid.
Further, tree topology pipeline contains main shunt tubes 10, branch lines 11, branch lines 12 and converging blast pipe 13, the input of main shunt tubes 10 runs through and fixed connection in the stock solution chamber bottom, the rigid coupling has the intake pipe that runs through base 1 lateral wall on the pipeline section lateral wall that main shunt tubes 10 is located the stock solution intracavity, main shunt tubes 10 and branch lines 11 fixed connection and common fixed mounting are in bottom support 3, be used for the even transportation of ammonia waste gas, and branch lines 11's output and branch lines 12's input fixed mounting have motorised valve 14, branch lines 12 and converging blast pipe 13 fixed connection, branch lines 12's bottom and top fixed disk 5 fixed connection converge, branch lines 13 internal fixed mounting have the defroster in order to intercept the mist, after waste gas got into main shunt tubes 10, by evenly distributed to many branch lines 11, guarantee the evenly distributed of gas on the absorption cross-section, avoid taking place the drift phenomenon.
Further, the cyclone separation nozzle 9 comprises a cyclone chamber 15 and an edge suction ring 17, the outer side wall of the cyclone chamber 15 is fixedly connected with a water inlet pipe 16 communicated with a high-pressure infusion tube 201, the arrangement direction of the water inlet pipe 16 is tangential to the circumference of the cyclone chamber 15 to endow fluid angular momentum, a constraint nozzle 18 is arranged at the bottom of the cyclone chamber 15, the size of the constraint nozzle 18 is far smaller than the diameter of a chamber to maintain high pressure and strong cyclone in the chamber, the bottom of the edge suction ring 17 is fixedly connected with the top of the cyclone chamber 15, the input end of the edge suction ring 17 is close to the inner side wall of the spray tube 8, the negative pressure generated by the strong cyclone is utilized to adsorb waste gas breaking through a water curtain, and the centrifugal force generated by the cyclone is utilized to throw away ammonium sulfate particles;
The adoption of the device has the further advantages that the central negative pressure area generated by strong rotational flow is utilized, the escaped waste gas breaking through the edge of the water curtain is actively absorbed through the edge suction ring 17, the escaped waste gas is sucked into the rotational flow chamber 15 and is captured and mixed by the absorbing liquid rotating at a high speed, the escape of ammonia gas is prevented, meanwhile, the centrifugal force generated by rotational flow can effectively throw away and throw ammonium sulfate solid particles in the absorbing liquid to the inner wall of the absorbing chamber 7, the gas-liquid-solid preliminary separation is realized, and the structured packing below is protected.
Further, an installation sleeve 19 is arranged in the absorption chamber 7, a gap is formed between the outer side wall of the installation sleeve 19 and the inner side wall of the absorption chamber 7, a zeolite adsorption layer 20 for adsorbing ammonium sulfate is filled in the gap, a detection electrode is arranged at the bottom of the zeolite adsorption layer 20, and the concentration of ammonium sulfate and the adsorption state of zeolite are indirectly reflected by detecting the concentration of ammonium ions in effluent liquid of the zeolite adsorption layer 20;
Further, the bottom of the installation sleeve 19 is fixedly connected with the inner wall of the cylinder 6 and is provided with a through hole for the backflow of spray water, a positioning groove is formed in the installation sleeve 19, the installation sleeve 19 is pin-connected with a structured packing through the positioning groove so as to provide an efficient gas-liquid mass transfer surface, the structured packing comprises a corrugated plate packing module 21 and a honeycomb packing module 22, the outer side walls of the corrugated plate packing module 21 and the honeycomb packing module 22 are respectively provided with a fixed pin, the corrugated plate packing module 21 is pin-connected with the inner wall of the installation sleeve 19 through the fixed pins, the corrugated plate packing module 21 is installed in the cylinder 6 at the bottom of the middle support 4, and the honeycomb packing module 22 is installed in the cylinder 6 at the top of the middle support 4;
The adoption of the method has the further advantages that the regular packing module is in pin joint with the mounting sleeve 19 through the fixing pin, the modularization and the zoning of the ammonia absorption assembly are realized jointly through the synergistic effect of the zeolite absorption layer 20 and the detection electrode and the motor-driven valve 14 controlled by the zoning, so that when partial saturation is detected, only the branch of the corresponding area can be closed and the cylinder 6 in the area can be disassembled for zeolite replacement or packing replacement, the operation of the whole absorption tower is not required to be stopped, and the maintainability and the continuous operation capability of the system are obviously improved.
When the invention is used, ammonia-containing waste gas is led into the main shunt tube 10 through the air inlet tube, is evenly distributed through the shunt tube 11 and then rises into the absorption chamber 7 in the cylinder 6, meanwhile, the dilute sulfuric acid absorption liquid is conveyed to each cyclone separation nozzle 9 by the high-pressure water pump 2, and when in operation, the heat dissipation fins on the outer wall of the cylinder 6 utilize natural wind to perform convection heat dissipation, so that the reaction temperature is maintained;
the high-pressure water flow is introduced in the tangential direction of the circular wall surface of the spin chamber 15 through the water inlet pipe 16, and after the high-pressure water flows into the spin chamber 15 at a high speed through the water inlet pipe 16, the high-pressure water flow can rotate along the inner wall of the spin chamber 15 around the central axis of the spin chamber 15, forms high-speed rotational flow around the central axis in the spin chamber 15 under the action of centrifugal force and is sprayed out by being clung to the edge of the constraint nozzle 18, and finally forms a conical hollow spray (water curtain) to cover the section of the absorption chamber 7;
Because the high-speed rotational flow rotates on the outer wall of the rotational flow chamber 15 through centrifugal force, the density of the fluid in the central axis area is obviously reduced (rarefaction), and according to the fluid mechanics principle, the centrifugal force generates outward radial force, and the radial force is necessarily balanced by a pressure gradient from inside to outside, so that in the central area with low density, the static pressure is inevitably and synchronously lowered greatly, thereby forming a negative pressure core area;
At this time, the ammonium sulfate particles suspended in the dilute sulfuric acid absorption liquid are thrown to the inner side wall of the absorption chamber 7 under the action of centrifugal force, then fall into the zeolite adsorption layer 20 along the inner side wall of the absorption chamber 7 and are adsorbed on the surface of zeolite, so that the service life of the structured packing is prolonged, when the absorption liquid filtered by the zeolite adsorption layer 20 flows through the detection electrode, the adsorption state of the zeolite adsorption layer 20 is detected by the detection electrode, when the electric signal of the detection electrode is weak, the concentration of ammonium ions in the absorption liquid is low, thus the zeolite adsorption layer 20 is inferred to be still effectively adsorbed, and when the electric signal of the detection electrode is strong, the concentration of ammonium ions in the absorption liquid is inferred to be high, thus the adsorption capacity of the zeolite adsorption layer 20 is inferred to be close to saturation or saturated;
Meanwhile, the negative pressure generated by the fluid in the cyclone chamber 15 pumps the escaping waste gas breaking through the edge of the water curtain back to the cyclone chamber 15 through the edge pumping ring 17, and the escaping waste gas is immediately surrounded, torn and entrained by the strong shearing force action generated by the absorption liquid rotating at high speed in the cyclone chamber 15 after being pumped back, so that the waste gas is vigorously mixed in the cyclone chamber 15, and the effect of preventing the waste gas from escaping from the weak part of the water curtain is realized;
When ammonia-containing waste gas rises, ammonia-containing waste gas firstly enters the barrel 6 at the bottom of the middle support 4 and contacts the corrugated plate packing module 21, the corrugated plate packing module 21 has a high specific surface area and a complex flow channel, the structure of the corrugated plate packing module can provide a sufficient gas-liquid contact area, can promote rapid mass transfer, has a high reaction rate, is used for carrying out primary treatment on high-concentration waste gas, the ammonia-containing waste gas which is subjected to primary treatment enters the barrel 6 at the top of the middle support 4 and contacts the honeycomb packing module 22, gas-liquid fluid from the lower layer is redistributed, wall flows possibly formed by the corrugated plate packing module 21 are dispersed, and meanwhile, the regular straight way has lower gas-phase resistance, so that the ammonia-containing waste gas can smoothly flow out through the honeycomb packing with low resistance when approaching an outlet, the total pressure drop of the whole packing bed is obviously reduced, the working pressure of a demister is reduced, the whole gas-liquid contact is more sufficient, and finally, residual liquid drops and mist are intercepted by the demister in the confluence exhaust pipe 13, and the purified gas is discharged up to the standard;
When the detection electrode detects that the concentration of ammonium ions is too high, the zeolite absorption layer at the position is saturated, at the moment, the electric valve 14 at the corresponding area is closed, the cylinder 6 is removed, then the zeolite absorption layer 20 is cleaned and replaced, if the corrugated plate packing module 21 or the honeycomb packing module 22 is required to be replaced, the corresponding module can be replaced by applying a pulling force to detach the fixing pin, and maintenance without shutdown is realized.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (7)
1. The utility model provides a high-efficient absorption tower of spray-type aqueous ammonia, includes base (1), high-pressure water pump (2) and high-pressure transfer line (201), its characterized in that, be equipped with the stock solution chamber in base (1), be equipped with tower body frame above base (1), tower body frame includes open bottom support (3), middle part support (4) and top fixed disk (5), install the absorption assembly in the tower body frame, the absorption assembly includes tree topology pipeline that is used for distributing the ammonia gas, ammonia absorption component that is used for core gas-liquid mass transfer reaction and is used for separating the separation subassembly that spouts soon of ammonium sulfate granule, high-pressure water pump (2) are installed at the lateral wall of base (1) for carry the absorption liquid pressurization in the stock solution chamber to spout the separation subassembly soon;
The tree topology pipeline comprises a main shunt pipe (10), a shunt branch pipe (11), a confluence branch pipe (12) and a confluence exhaust pipe (13), wherein the input end of the main shunt pipe (10) penetrates through and is fixedly connected to the bottom of a liquid storage cavity, an air inlet pipe penetrating through the side wall of a base (1) is fixedly connected to the outer side wall of a pipe section of the main shunt pipe (10) positioned in the liquid storage cavity, the main shunt pipe (10) and the shunt branch pipe (11) are fixedly connected and are fixedly installed in a bottom bracket (3) together, and an electric valve (14) is fixedly installed at the output end of the shunt branch pipe (11) and the input end of the confluence branch pipe (12);
the ammonia absorption assembly is positioned at the end part in the middle support (4) and comprises a cylinder body (6), the outer side wall of the cylinder body (6) is provided with radiating fins radiating by natural wind, the proper reaction temperature in the absorption process can be maintained, and an absorption chamber (7) for capturing ammonium sulfate and carrying out gas-liquid mass transfer reaction is arranged in the cylinder body (6);
The cyclone separation assembly is located above the ammonia absorption assembly and comprises a spray pipe (8), and cyclone separation nozzles (9) are installed on the inner side walls of the bottoms of the spray pipe (8) and can generate high-speed rotating atomized liquid drops.
2. The spray type ammonia water efficient absorption tower according to claim 1, wherein the converging branch pipe (12) is fixedly connected with the converging exhaust pipe (13), the bottom of the converging branch pipe (12) is fixedly connected with the top fixing plate (5), and a demister is fixedly installed in the converging exhaust pipe (13) to intercept mist.
3. The spray type ammonia water efficient absorption tower according to claim 1, wherein the cyclone separation nozzle (9) comprises a cyclone chamber (15) and an edge suction ring (17), a water inlet pipe (16) communicated with a high-pressure infusion pipe (201) is fixedly connected to the outer side wall of the cyclone chamber (15), the arrangement direction of the water inlet pipe (16) is tangential to the circumference of the cyclone chamber (15) so as to endow fluid angular momentum, a constraint nozzle (18) is arranged at the bottom of the cyclone chamber (15), and the size of the constraint nozzle (18) is far smaller than the diameter of a chamber so as to maintain high pressure and strong cyclone in the chamber.
4. The spray type ammonia water efficient absorption tower according to claim 3, wherein the bottom of the edge suction ring (17) is fixedly connected with the top of the swirl chamber (15), the input end of the edge suction ring (17) is close to the inner side wall of the spray pipe (8), and negative pressure generated by strong swirl is utilized to absorb waste gas breaking through a water curtain.
5. The spray type ammonia water efficient absorption tower according to claim 1, wherein an installation sleeve (19) is arranged in the absorption chamber (7), a gap is formed between the outer side wall of the installation sleeve (19) and the inner side wall of the absorption chamber (7), a zeolite adsorption layer (20) for adsorbing ammonium sulfate is filled in the gap, and a detection electrode is arranged at the bottom of the zeolite adsorption layer (20).
6. The spray type ammonia water efficient absorption tower according to claim 5, wherein the bottom of the installation sleeve (19) is fixedly connected with the inner wall of the cylinder (6) and is provided with a through hole for the backflow of spray water, a positioning groove is formed in the installation sleeve (19), and the installation sleeve (19) is pin-connected with a structured packing through the positioning groove so as to provide an efficient gas-liquid mass transfer surface.
7. The spray-type ammonia water efficient absorption tower according to claim 6, wherein the structured packing comprises corrugated plate packing modules (21) and honeycomb packing modules (22), the outer side walls of the corrugated plate packing modules (21) and the honeycomb packing modules (22) are respectively provided with a fixing pin, the corrugated plate packing modules (21) are installed in a cylinder (6) at the bottom of the middle support (4) through the fixing pins and the inner wall of the installation sleeve (19), and the honeycomb packing modules (22) are installed in the cylinder (6) at the top of the middle support (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068753A (en) * | 1992-02-14 | 1993-02-10 | 殷斌友 | Process and equipment for treating nitric acid tail gas by ammoniated ammonium nitrate absorption method |
| CN107469561A (en) * | 2017-09-19 | 2017-12-15 | 中国科学院过程工程研究所 | A kind of gas cleaning absorption tower and its processing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11185817B2 (en) * | 2019-05-08 | 2021-11-30 | Jiangsu Cohen Environmental Protection Co. Ltd. | Ammonia-based multi-zone double-loop process for ultralow emission of multi-pollutant |
| CN220003483U (en) * | 2023-05-12 | 2023-11-14 | 安徽海华科技集团有限公司 | Ammonia recovery tower for high-concentration ammonia nitrogen wastewater treatment |
| CN120022737B (en) * | 2025-04-24 | 2025-07-08 | 四川凌耘建科技有限公司 | Efficient energy-saving carbon dioxide absorption tower |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068753A (en) * | 1992-02-14 | 1993-02-10 | 殷斌友 | Process and equipment for treating nitric acid tail gas by ammoniated ammonium nitrate absorption method |
| CN107469561A (en) * | 2017-09-19 | 2017-12-15 | 中国科学院过程工程研究所 | A kind of gas cleaning absorption tower and its processing method |
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