CN204058401U - A kind of coal gas AS process tail gas washing purifying device - Google Patents
A kind of coal gas AS process tail gas washing purifying device Download PDFInfo
- Publication number
- CN204058401U CN204058401U CN201420418442.3U CN201420418442U CN204058401U CN 204058401 U CN204058401 U CN 204058401U CN 201420418442 U CN201420418442 U CN 201420418442U CN 204058401 U CN204058401 U CN 204058401U
- Authority
- CN
- China
- Prior art keywords
- tail gas
- washing water
- washing
- input aperture
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Treating Waste Gases (AREA)
- Industrial Gases (AREA)
Abstract
The utility model discloses a kind of coal gas AS process tail gas washing purifying device, comprise tail gas diverting valve, tail gas washing tower, described tail gas diverting valve is provided with tail gas input aperture and at least two tail gas delivery ports, described tail gas washing tower bottom is provided with washing water delivery port and tail gas input aperture and top and is provided with washing water input aperture, tail gas delivery port is provided with between described washing water input aperture and tail gas input aperture, each tail gas input aperture described is communicated with corresponding tail gas washing tower tail gas delivery port respectively by pipeline, described tail gas delivery port is communicated with raw gas system through pipeline.The utility model, by the tail gas shunting after coal gas AS technique, makes shunting tail gas fully contact with the washing water of enriched ammonia in washing tower, the SO effectively in removing tail gas
2, H
2s, CO
2, elemental sulfur, the objectionable impurities such as tar, have purification efficiency high, effectively can prevent line clogging, ensure purification process feature smoothly.
Description
Technical field
The utility model belongs to gas purification technical field, relate to a kind of purification efficiency high, effectively can prevent line clogging, ensure purification process coal gas AS process tail gas washing purifying device smoothly.
Background technology
After the coal gas produced in coking production process needs to send into that gas cleaning system carries out tar recovery, coal gas desulfurization, recovery ammonia, sulfur recovery, coal gas takes off the purifying treatment of the operation such as naphthalene and crude benzol, now coke-oven gas is purification coal gas.After raw gas purification, its maximum effect of competence exertion, otherwise its purposes is very narrow, generally only can make fuel burning boiler and use.Because AS technique has the H that desulfuration and decyanation efficiency is generally coal gas after tower
2s and HCN is respectively 500mg/m
3, industrial fuel requirement can be met; With the ammonia in coal gas for alkali source, do not need exogenously added alkali, do not produce waste liquid, can not secondary pollution be produced.Therefore, in the middle of gas purification " sulphur, ammonia " remove that generally to adopt with ammonia be the AS circulation cleaning technique of absorption agent.Namely AS technique pass through final cooling tower coal gas out, and sending into after thionizer with the ammoniacal liquor after depickling process is alkali source, washs, while washing ammonia, remove H to coal gas
2s, HCN, then enter Ammonic washing tower, to remove " sulphur, the ammonia " impurity in coal gas, then send benzene tower to laundry except benzene, and washings is by producing ammonia and acid gas (H after ammonia still and extracting tower distillation
2s gas), acid gas adopts claus process device to produce sulphur, and ammonia adopts ammonolysis craft process unit combustion decomposition, due in the tail gas that produces after producing sulphur and ammonolysis craft containing SO
2, H
2the complicated ingredients such as S, elemental sulfur, ammonium salt, wherein SO
2concentration reaches more than 1%, far exceedes Acidic Gas Treating country the highest permission SO
2emission concentration≤960mg/m
3the standard of (or 0.0336%), cannot reach environment protection emission requirement.Therefore, the tail gas of gas purification AS technique can only be collected by pipe special, and send in the raw gas system before condensing unit gas blower and recycle, distilled ammonia wastewater send biochemical system to process further.Due to the technological deficiency that existing purification system technique exists, the SO in tail gas
2, H
2the impurity such as S, ammonia salt have severe corrosive, cause exhaust pipe system and gas washing system device seriously corroded.Simultaneously, send into the recovery tail gas in raw coke oven gas pipe before cold bulging gas fan, except corrosion gas main road and washing unit equipment, sulphur powder, ammonium salt mixes with the condensed tar in coal gas and is deposited in gas main in a large number, when offgas duct blocking is serious, pipe inner suction is close to zero (at least at more than-1.5KPa when suction is normal), tail gas stream prompt drop is low, cause ammonia still, extracting tower gaseous phase outlet resistance raises, gas line and washing tower resistance constantly increase, make gas purification host system (cold drum unit, washing unit) operation condition variation, technological balance controls difficulty, thus have influence on distilled ammonia wastewater quality, dispatch from the factory gas quality.AS tail gas recycle is sent into raw gas system and is utilized, and significantly accelerates pipeline inner product knot foreign material mixtures such as () sulphur powder, tar, inorganic salt, corrosive pipeline things blocking.Offgas duct and gas main junction, measured by perforate, the gas main of diameter phi 1400mm blocking 2/3, and only have the passage of about 400mm, suction is almost 0, due to the restriction of coal gas continuous seepage condition, gas main cannot be stopped work cleaning.This is the common issue existing for coking industry gas purification AS technique, is never well solved.
Utility model content
The purpose of this utility model be to provide a kind of purification efficiency high, effectively can prevent line clogging, ensure purification process coal gas AS process tail gas washing purifying device smoothly.
The purpose of this utility model realizes like this, comprise tail gas diverting valve, tail gas washing tower, described tail gas diverting valve is provided with tail gas input aperture and at least two tail gas delivery ports, described tail gas washing tower bottom is provided with washing water delivery port and tail gas input aperture and top and is provided with washing water input aperture, tail gas delivery port is provided with between described washing water input aperture and tail gas input aperture, each tail gas input aperture described is communicated with corresponding tail gas washing tower tail gas delivery port respectively by pipeline, and described tail gas delivery port is communicated with raw gas system through pipeline.
The tail gas of acid gas retrieving arrangement and/or the tail gas of ammonia recycling device after coal gas AS technique are shunted by the utility model, and the tail gas after shunting is sent in corresponding tail gas washing tower, tail gas is fully contacted with the washing water of enriched ammonia, thus effectively removes the SO in tail gas
2, H
2s, CO
2, elemental sulfur, the objectionable impurities such as tar.Therefore, the utility model have coal gas AS process tail gas purification efficiency high, effectively can prevent line clogging, ensure purification process feature smoothly.
Accompanying drawing explanation
Fig. 1 is principle schematic of the present utility model;
In figure: 1-tail gas diverting valve, 11-tail gas input aperture, 12-tail gas delivery port, 2-tail gas washing tower, 21-washing water delivery port, 22-tail gas input aperture, 23-washing water input aperture, 24-tail gas delivery port, 25-shower nozzle, 26-packing layer, 3-washing water liquid storage tank, 31-washing water refluxing opening, 32-washing water export, 33-depickling lean solution entrance, 34-alkali dispensing port, 4-washing water pump, 5-washing water discharge tube, 6-tail gas hybrid station, the exhaust pipe of 61-acid gas retrieving arrangement, the exhaust pipe of 62-ammonia recycling device, 7-raw coke oven gas pipeline.
Embodiment
Be further described the utility model below in conjunction with accompanying drawing, but must not be limited the utility model by any way, any change done based on the utility model training centre or improvement, all belong to protection domain of the present utility model.
As shown in Figure 1, the utility model comprises tail gas diverting valve 1, tail gas washing tower 2, described tail gas diverting valve 1 is provided with tail gas input aperture 11 and at least two tail gas delivery ports 12, described tail gas washing tower 2 bottom is provided with washing water delivery port 21 and tail gas input aperture 22 and top and is provided with washing water input aperture 23, tail gas delivery port 24 is provided with between described washing water input aperture 23 and tail gas input aperture 22, each tail gas input aperture 22 described is communicated with corresponding tail gas washing tower 2 tail gas delivery port 12 respectively by pipeline, described tail gas delivery port 24 is communicated with raw gas system through pipeline.
Be provided with in described tail gas washing tower 2 and be communicated with and the washing water shower nozzle 25 that Open Side Down with washing water input aperture 23.
Packing layer 26 is provided with between the inherent tail gas input aperture 22 of described tail gas washing tower 2 and tail gas delivery port 24.
The tail gas input aperture 11 of described tail gas diverting valve 1 is communicated with the exhaust pipe of ammonia recycling device with the exhaust pipe of acid gas retrieving arrangement respectively by tail gas hybrid station 6.
The fractional flow of described tail gas diverting valve 1 controls to be 500 ~ 550Nm
3/ h.
Described washing tail gas refining plant also comprises washing water liquid storage tank 3, washing water pump 4, described washing water liquid storage tank 3 is provided with washing water refluxing opening 31, washing water outlet 32 and depickling lean solution entrance 33, described washing water refluxing opening 31 is communicated with washing water delivery port 21 by pipeline, described washing water outlet 32 is communicated with washing water input aperture 23 with washing water pump 4 through pipeline, and described depickling lean solution entrance 33 is communicated with AS technique extracting tower with valve by pipeline.
Described washing water liquid storage tank 3 is provided with alkali dispensing port 34.
Described washing water liquid storage tank 3 is provided with washing water discharge outlet 35.
Describedly state washing water outlet and 32 to be communicated with washing water input aperture 23, washing water discharge tube 5 respectively with washing water pump 4 and valve through pipeline.
To be pH value be described washing water 9.5 ~ 10, NH
3content is the enriched ammonia washing water of 25 ~ 28g/L.
utility model works principle and working process:
The tail gas of acid gas retrieving arrangement and/or the tail gas of ammonia recycling device after coal gas AS technique are shunted by the utility model, and the tail gas after shunting is sent in corresponding tail gas washing tower, tail gas is fully contacted with the washing water of enriched ammonia, thus effectively removes the SO in tail gas
2, H
2s, CO
2, elemental sulfur, the objectionable impurities such as tar.The utility model controls ammonia content in washing water by washing water liquid storage tank, makes the NH that the washing water of enriched ammonia maintenance washing tower is comparatively balancing
3/ H
2s, both can not because of too low containing ammonia than lower operation, and absorption driving force declines, again can not be too high and strengthen the load of washing tower containing ammonia, thus ensure higher desulfuration efficiency, and do not have by product to process during the course, simplifies technique, reduce cost; Desirable alkaline state is in by the pH value controlling enriched ammonia washing water in washing water liquid storage tank, the ability removing sulphur in tail gas can be improved, the Corrosion blockage that can not increase the weight of equipment, pipeline because alkalescence is too strong again, and can reduce the heavy burdens for the biochemical treatment waste water after follow-up discharge; Fully contacting with washing water with low flow velocity in cooling tower by controlling tail gas, being conducive to the washing removal efficiency improving objectionable impurities in tail gas; By arranging packing layer in washing tower, contact area and the duration of contact of tail gas and washing water can be increased, be particularly conducive to the wash-out of elemental sulfur in tail gas, tar.Therefore, the utility model have coal gas AS process tail gas purification efficiency high, effectively can prevent line clogging, ensure purification process feature smoothly.
As shown in Figure 1, after coal gas AS technique, the tail gas 61 of acid gas retrieving arrangement and the tail gas 62 of ammonia recycling device collect mixing in tail gas hybrid station 6, then split at least two shunting tail gas by tail gas diverting valve 1; By variable valve, each shunting tail gas is sent in corresponding tail gas washing tower 2 with the flow velocity of 9 ~ 12m/s through tail gas input aperture 22, through washing water input aperture 23 with pH value be 9.5 ~ 10, NH
3content is the tail gas that the washing water washing water shower nozzle 25 of 25 ~ 28g/L washs from bottom to top from top to bottom, tail gas is fully contacted with washing water, washing water flow out from the washing water delivery port 21 of washing tower bottom, and after washing, tail gas flows out from the tail gas delivery port 24 on washing tower top; The tail gas flowed out from washing tower 2 top after washing is recycled by raw gas system through raw coke oven gas pipeline 7; The washing water flowed out from washing tower 2 bottom collect into washing water liquid storage tank 3, periodic monitor washing water pH value, NH
3content and H
2s content, when liquid storage tank liquid level is too low, pH value more than 9.5 ~ 10, NH
3content is more than 25 ~ 28g/L and/or H
2during S content > 3.0g/L, supplemented the depickling lean solution in AS technique by depickling lean solution entrance 33, added alkali and/or to be exceeded standard washing water by washing water pump 4 and valve and washing water discharge tube 5 discharge by alkali dispensing port 34, adjustment washing water are to acceptability limit: pH value is 9.5 ~ 10, NH
3content is 25 ~ 28g/L, H
2s content is 0 ~ 3.0g/L, then extracts washing water by washing water outlet 32 through washing water pump 4 and recycles to washing tower 2.
Claims (7)
1. a coal gas AS process tail gas washing purifying device, it is characterized in that comprising tail gas diverting valve (1), tail gas washing tower (2), described tail gas diverting valve (1) is provided with tail gas input aperture (11) and at least two tail gas delivery ports (12), described tail gas washing tower (2) bottom is provided with washing water delivery port (21) and tail gas input aperture (22) and top and is provided with washing water input aperture (23), tail gas delivery port (24) is provided with between described washing water input aperture (23) and tail gas input aperture (22), each tail gas input aperture (22) described is communicated with corresponding tail gas washing tower (2) tail gas delivery port (12) respectively by pipeline, described tail gas delivery port (24) is communicated with raw gas system through pipeline.
2. washing purifying device according to claim 1, is characterized in that being provided with in described tail gas washing tower (2) and is communicated with and the washing water shower nozzle (25) that Open Side Down with washing water input aperture (23).
3. washing purifying device according to claim 1, is characterized in that being provided with packing layer (26) between the inherent tail gas input aperture (22) of described tail gas washing tower (2) and tail gas delivery port (24).
4. washing purifying device according to claim 1, is characterized in that the fractional flow of described tail gas diverting valve (1) controls to be 500 ~ 550Nm
3/ h.
5. washing purifying device according to claim 1, characterized by further comprising washing water liquid storage tank (3), washing water pump (4), described washing water liquid storage tank (3) is provided with washing water refluxing opening (31), washing water outlet (32) and depickling lean solution entrance (33), described washing water refluxing opening (31) is communicated with washing water delivery port (21) by pipeline, described washing water outlet (32) are communicated with washing water input aperture (23) with washing water pump (4) through pipeline, and described depickling lean solution entrance (33) is communicated with AS technique extracting tower with valve by pipeline.
6. washing purifying device according to claim 1, is characterized in that the tail gas input aperture 11 of described tail gas diverting valve 1 is communicated with the exhaust pipe of ammonia recycling device with the exhaust pipe of acid gas retrieving arrangement respectively by tail gas hybrid station 6.
7. washing purifying device according to claim 1, is characterized in that described washing water to be pH value is 9.5 ~ 10, NH
3content is the enriched ammonia washing water of 25 ~ 28g/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420418442.3U CN204058401U (en) | 2014-07-29 | 2014-07-29 | A kind of coal gas AS process tail gas washing purifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420418442.3U CN204058401U (en) | 2014-07-29 | 2014-07-29 | A kind of coal gas AS process tail gas washing purifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204058401U true CN204058401U (en) | 2014-12-31 |
Family
ID=52199952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420418442.3U Active CN204058401U (en) | 2014-07-29 | 2014-07-29 | A kind of coal gas AS process tail gas washing purifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204058401U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104087349A (en) * | 2014-07-29 | 2014-10-08 | 云南煤业能源股份有限公司 | Washing purification method and device of coal gas AS technique exhaust |
| CN107746974A (en) * | 2017-11-20 | 2018-03-02 | 临沂鑫海新型材料有限公司 | Electric furnace coal-gas recovering utilizes device in RKEF method smelting ferronickels |
-
2014
- 2014-07-29 CN CN201420418442.3U patent/CN204058401U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104087349A (en) * | 2014-07-29 | 2014-10-08 | 云南煤业能源股份有限公司 | Washing purification method and device of coal gas AS technique exhaust |
| CN107746974A (en) * | 2017-11-20 | 2018-03-02 | 临沂鑫海新型材料有限公司 | Electric furnace coal-gas recovering utilizes device in RKEF method smelting ferronickels |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104355343B (en) | A kind of purification process for reclaiming ammonia in coal gasification waste water | |
| CN204058401U (en) | A kind of coal gas AS process tail gas washing purifying device | |
| CN210171207U (en) | Desulfurization acid making system | |
| CN203436980U (en) | Device for treating waste gas in diammonium phosphate production | |
| CN103691276B (en) | A kind of method and device improving vacuum potassium carbonate desulfurization technique alkali wash section alkali lye utilization rate | |
| CN101564624A (en) | Swirl reinforcing method and device for removing hydrogen sulfide by gas | |
| CN204841399U (en) | Desulfurization dust collector based on rotatory spray drying | |
| CN104289092A (en) | Reclaimed rubber desulfurized tail gas purification device | |
| CN203061053U (en) | Continuous circulating spraying device for removing hydrogen sulfide from crude oil storage tank | |
| CN202089795U (en) | Novel flashing and dehumidifying combination device | |
| CN209397047U (en) | A kind of coal chemical industrial waste water removes the device of removing exhaust gas sundries | |
| CN105349194A (en) | Offshore platform hypergravity desulphurization apparatus and method thereof | |
| CN205084866U (en) | Red mud cross -flow dealkalize device | |
| CN204412053U (en) | A kind of gas collection system of Yellow phosphorus recovering device | |
| CN204569620U (en) | A kind of coking chemical waste water oil removing slag removing system | |
| CN207786265U (en) | A kind of circular treatment oily sludge glows exhaust gas processing device | |
| CN102515324A (en) | Method and device for treating acid mine wastewater | |
| CN203379801U (en) | Desulfurization device | |
| CN202279807U (en) | Recycling device of ammonia cooked and distilled wastewater in desulphurization process | |
| CN207980811U (en) | Mist eliminator flushing water recovery device in a kind of desulfuration absorbing tower | |
| CN202590565U (en) | Purifying equipment for acid making with flue gas | |
| CN104087349A (en) | Washing purification method and device of coal gas AS technique exhaust | |
| CN202131125U (en) | Wastewater treating device for recycling deamination and ammonia nitrogen | |
| CN109231617A (en) | A kind of coal chemical industrial waste water removes the device of removing exhaust gas sundries | |
| CN206783396U (en) | One kind drop flow type anaerobe reactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |