CN1035568C - Device and process for burning oxidized asphalt tail gas without separating distillate oil - Google Patents
Device and process for burning oxidized asphalt tail gas without separating distillate oil Download PDFInfo
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- CN1035568C CN1035568C CN93100180A CN93100180A CN1035568C CN 1035568 C CN1035568 C CN 1035568C CN 93100180 A CN93100180 A CN 93100180A CN 93100180 A CN93100180 A CN 93100180A CN 1035568 C CN1035568 C CN 1035568C
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- Prior art keywords
- tail gas
- incinerator
- burning
- distillate oil
- pipe
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- Expired - Fee Related
Links
- 239000010426 asphalt Substances 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 54
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 15
- 230000003647 oxidation Effects 0.000 claims abstract description 14
- 238000002485 combustion reaction Methods 0.000 claims abstract description 11
- 230000001590 oxidative effect Effects 0.000 claims abstract description 11
- 241000282326 Felis catus Species 0.000 claims description 15
- 238000005516 engineering process Methods 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 5
- 239000000567 combustion gas Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 3
- 239000002737 fuel gas Substances 0.000 abstract description 3
- 238000004821 distillation Methods 0.000 abstract 2
- 239000010865 sewage Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000005496 tempering Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Incineration Of Waste (AREA)
Abstract
The invention relates to a device and a process for oxidizing asphalt tail gas by burning non-separable distillate oil, wherein the burning device comprises an oxidation tower, a tail gas pipeline incinerator and the like, a tail gas pipe leading out tail gas from the oxidation tower is directly communicated with the incinerator, and the incinerator is provided with a steam input pipe and a fuel gas input pipe. The process for burning and oxidizing asphalt tail gas without separating distillate oil comprises the following steps: determining the combustion speed of tail gas; secondly, selecting an oxidation tower top distillation line, namely determining the reasonable pipe diameter of the tail gas pipe; introducing steam into the tail gas pipe to increase the flow rate of the tail gas; fourthly, preserving the heat of the top distillation line of the oxidation tower; fifthly, directly burning the tail gas. The invention has simple process, safe production, reduced construction fund and production cost and environment conservation.
Description
The present invention relates to a kind of distillate oil that do not separate and burn oxygen, be used for handling the tail gas that the oxidized asphalt process produces, eliminate environmental pollution by changing pitch tail gas unit and technology.ICL is: F23G7/06.
Have at present both at home and abroad variously about the device of handling pitch tail gas and process, for example: Chinese invention patent ublic specification of application CN1052729A. (90109574.5) discloses a kind of " hazardous waste incinerator in the belt material ".This incinerator comprises an interior Burning Room, it can be made by resistant material a kind of atresia, impermeabilisation, the lining that also can have this material, a backing plate and a recycling fan that is used for the supporting strap incinerated matter is arranged in it, also comprise a thermal insulation and seal mutually and isolated exterior combustion chamber with interior Burning Room.The heat that the combustion outer chamber generates internally Burning Room heats, separates with the combustion product of exterior combustion chamber by the product that the harmful waste of interior Burning Room burns, and not mixing mutually.And for example: Chinese invention patent ublic specification of application CN1011033A (88106321.5) discloses a kind of " novel tail-gas combustion stove ".This stove adopts vortex pair outer mixed mode nozzle, and nozzle makes with acidproof refractory concrete, pressurized firing, and its bilayer protective case formation air preheat chuck, the body of heater rear portion is set up sewage and is burnt and separate the chamber.This tail-gas combustion stove fire box temperature Gao Bingke burns to separate and contains organic matter sewage, and use in the fields such as oil, chemical industry, metallurgy that are adapted at.In above prior art, though adopted comparatively advanced technology, but do not carry out high temperature incineration owing to adopt the tail gas of directly oxidizing tower being discharged to introduce in the incinerator, therefore, tail gas from the discharge of chlorination cat head, carry out preliminary treatment, isolate sump oil, sewage, environment is polluted.
Existing processes is, tail gas is carried out preliminary treatment, and purpose is 1. to reclaim 1～1.5% sump oil with oil and washing; 2. making tail gas go out behind the tower temperature reduces to 50 ℃ and guarantees that cat head distillates the line noncoking, reaches long period production; 3. tail gas can be installed spark arrester on the dry gas pipeline after the condensation cooling divides oil content water, prevents back draft, ensures safety in production.
Purpose of the present invention is just in order to solve weak point of the prior art, and proposed a kind of burning oxidized asphalt tail gas without separation of distillate oil device and technology.It is the tail gas that oxidizing tower is discharged is not needed any preliminary treatment and directly to introduce the incinerator fontanel and carry out high temperature incineration, thoroughly eliminates the pollution to environment.
The object of the present invention is achieved like this.
The burning oxidized asphalt tail gas without separation of distillate oil device of forming by oxidizing tower, incinerator etc., the offgas duct of drawing tail gas by oxidizing tower directly with the incinerator connection, steam input pipe and fuel gas input pipe are arranged on incinerator.
Burning oxidized asphalt tail gas without separation of distillate oil technology is:
1. determine exhaust combustion speed; 2. the selective oxidation cat head distillates line, promptly determines rational offgas duct caliber; 3. on offgas duct, feed steam, increase the flow velocity of tail gas; 4. the oxidation cat head distillates the insulation of line; 5. direct incineration tail gas.
The present invention compared with prior art has following advantage: burning oxidized asphalt tail gas without separation of distillate oil device and technology are with the process of oxidation cat head tail gas without condensation cooling, separation sump oil, sewage, directly introduce in the high-temperature incinerator and carry out high temperature incineration, in the device sump oil, sewage can not appear, thoroughly eliminated of the pollution of pitch tail gas, and technology is simple, production safety, reduction construction fund to environment.
The present invention has 2 width of cloth accompanying drawings, and wherein Fig. 1 is a most preferred embodiment of the present invention, also can make the accompanying drawing of specification digest.
Fig. 1, be device schematic diagram of the present invention;
Fig. 2, be process chart of the present invention.
Below in conjunction with accompanying drawing most preferred embodiment of the present invention is further described:
Most preferred embodiment of the present invention as shown in Figure 1, with raw material (decompression the dregs of fat or propane semiasphalt) with 12.5 tons/time flow through being heated to 180 ℃～200 ℃, send into oxidizing tower 1, compress wind is with 2400～2600 mark rice
3In/time, goes into to send pipe at the bottom of the oxidizing tower forth and contacts with material is reverse, produces qualified pitch at the bottom of the tower and delivers to moulding, and cooling is transported outward.Oxidation reaction is exothermic reaction, is the control tower top temperature, with 400～500 liters/time flow inject water to cat head.
The tail gas that generates in oxidizing process is directly introduced incinerator 3 by cat head offgas duct 2, carries out high temperature incineration.Tail gas stopped 4 seconds in incinerator 3,950 ℃～1000 ℃ of incineration temperatures.Effect after the burning reaches national the recognized standard.When directly feeding tail gas in the incinerator 3, by steam input pipe 5 near after feeding steam in the exhaust pipe 2 of incinerator 3 sides to incinerator 3, its purpose mainly is the flow velocity of tail gas in the increase offgas duct 2, plays safe effect.What fuel used is gas, feed in the stove by combustion gas input pipe 4, and be the fuel of incinerator.
Technology of the present invention is:
1, determines exhaust combustion speed.In order to eliminate stench in the tail gas, dense smoke, strong carcinogenic substance 3.4-benzo than murders by poisoning such as (BaP) floating dusts, relatively practical ways are directly to burn under conditions such as high temperature, excess of oxygen and long residence time.After this condition was burned, the tail gas clarification of being discharged, odorless, strong carcinogenic content were reduced to 2ng/m
3Below.But the flow process of tail gas burning up to now often all is very complicated, seldom adopts the flow process of directly burning, and main cause is the production accident that prevents that tempering from causing.Therefore the tempered condition that tail gas is directly burned be burning velocity determine it is crucial.
With a treating capacity be 12.5 tons/time tower oxidation device for asphalt operating data be example:
The blow rate required of oxidation is 2520M
3/ time, (water of 3% volume in the air), cat head injection flow rate be 400～500 kilograms/time, the temperature of cat head is 150 ℃, oil content is that raw material 1.5% (We) is pressed the heavy diesel fuel fraction and considered in the tail gas.Getting molecular weight is M=363, and tails assay result (butt) is as follows:
| Form | N 2 | ?O 2 | ?CO 2 | ?CO | ?C 1 | ?C 2 | ?C 3 | ?C 4 |
| Volume % | 86.5 | ?6.8 | ?2.4 | ?0.8 | ?0.2 | ?3.1 | ?0.1 | ?0.1 |
Calculate the tail gas of wet basis by above-mentioned condition and form and tolerance, and calculate maximum flame speed, just can calculate maximum flame propagation velocity is 0.7 meter per second.As long as make tail gas materail tube linear flow speed greater than 0.7 meter per second in theory, can prevent tempering.
2, select cat head to distillate line.Because existing device for asphalt often has the not good enough situation of oxidation cat head gas-liquid separation effect.Therefore prevent the pipeline coking, all leave bigger allowance on caliber, so that pipeline is thicker, the flow velocity of air-flow is also lower.With 12.5 tons/time device be example, caliber is got 500 millimeters, though then flow velocity only reaches 10 meter per seconds, but for tempering, 10 times safety coefficient is arranged, and prove through production practices, as long as the oxidation cat head has enough separated spaces, then do not exist pitch to carry secretly and the blocking pipeline problem fully, so more rational caliber is 350 millimeters, and is just higher to the safety coefficient of tempering.
3, adding steam mainly is to increase material pipe flow will speed, prevents tempering, plays safe effect.
4, the oxidation cat head distillates the insulation of line.In order to make tail gas under 150 ℃ temperature, enter incinerator, should not reduce temperature, prevent a large amount of greasy dirts, sewage condensation cooling.Therefore carry out insulation on the line and help burning fuel saving distillating.
5, tail gas is directly introduced in the incinerator by offgas duct burnt.Device in Gas feeds in the incinerator, as combustion adjuvant by the fuel gas input pipe.
Use burning oxidized asphalt tail gas without separation of distillate oil device and technology, its flow process is simplified greatly, and is easy to operate, saves construction fund, reduces production costs, and obtains favorable economic benefit, thoroughly eliminates environmental pollution.
Claims (2)
- One kind by oxidizing tower, tail gas pipeline incinerator, etc. the burning oxidized asphalt tail gas without separation of distillate oil device formed, it is characterized in that: direct and incinerator (3) connection of offgas duct (2) of drawing tail gas by oxidizing tower (1), steam-jet siphon (5) is arranged on exhaust pipe (2), combustion gas input pipe (4) is arranged on the incinerator (3).
- 2. a burning oxidized asphalt tail gas without separation of distillate oil technology is characterized in that: 1. determine exhaust combustion speed; 2. the selective oxidation cat head distillates line, promptly determines rational offgas duct caliber; 3. on offgas duct, feed steam, increase the flow velocity of tail gas; 4. the oxidation cat head distillates the insulation of line; 5. direct incineration tail gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93100180A CN1035568C (en) | 1993-01-09 | 1993-01-09 | Device and process for burning oxidized asphalt tail gas without separating distillate oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93100180A CN1035568C (en) | 1993-01-09 | 1993-01-09 | Device and process for burning oxidized asphalt tail gas without separating distillate oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1076770A CN1076770A (en) | 1993-09-29 |
| CN1035568C true CN1035568C (en) | 1997-08-06 |
Family
ID=4982852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93100180A Expired - Fee Related CN1035568C (en) | 1993-01-09 | 1993-01-09 | Device and process for burning oxidized asphalt tail gas without separating distillate oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1035568C (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4038032A (en) * | 1975-12-15 | 1977-07-26 | Uop Inc. | Method and means for controlling the incineration of waste |
| US4044099A (en) * | 1973-09-17 | 1977-08-23 | Griffin Research & Development, Inc. | Polluted air effluent incinerating method |
-
1993
- 1993-01-09 CN CN93100180A patent/CN1035568C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4044099A (en) * | 1973-09-17 | 1977-08-23 | Griffin Research & Development, Inc. | Polluted air effluent incinerating method |
| US4038032A (en) * | 1975-12-15 | 1977-07-26 | Uop Inc. | Method and means for controlling the incineration of waste |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1076770A (en) | 1993-09-29 |
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