CN104087349A - Washing purification method and device of coal gas AS technique exhaust - Google Patents
Washing purification method and device of coal gas AS technique exhaust Download PDFInfo
- Publication number
- CN104087349A CN104087349A CN201410362397.9A CN201410362397A CN104087349A CN 104087349 A CN104087349 A CN 104087349A CN 201410362397 A CN201410362397 A CN 201410362397A CN 104087349 A CN104087349 A CN 104087349A
- Authority
- CN
- China
- Prior art keywords
- tail gas
- washing
- washing water
- gas
- exhaust
- 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.)
- Pending
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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
-
- 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)
Abstract
The invention discloses a washing purification method and device of coal gas AS technique exhaust. The washing purification method comprises the steps of exhaust diversion control, cooling and washing, and exhaust recovery. The washing purification device comprises an exhaust diverter valve and an exhaust washing tower, wherein the exhaust diverter valve is provided with an exhaust input port and at least two exhaust output ports; the lower part of the exhaust washing tower is provided with a washing water output port and an exhaust input port, and the upper part is provided with a washing water input port; an exhaust output port is arranged between the washing water input port and the exhaust input port; each exhaust input port is respectively communicated with the corresponding exhaust washing tower exhaust output port through a pipeline; and the exhaust output port is communicated with a raw gas system through a pipeline. The exhaust after the coal gas AS technique is diverted to sufficiently contact the ammonia-enriched washing water in the washing tower, thereby effectively removing SO2, H2S, CO2, simple substance sulfur, tar and the like; and the device has the characteristics of high purification efficiency and the like, and can effectively prevent pipe clogging and ensure the smoothness of the purification technique.
Description
Technical field
The invention belongs to gas purification technical field, relate to a kind of purification efficiency high, can effectively prevent line clogging, ensure purification process washing and purifying method and the device thereof of coal gas AS process tail gas smoothly.
Background technology
The coal gas producing in coking production process need to be sent into gas cleaning system and carry out after the purifying treatment of the operations such as tar recovery, coal gas desulfurization, ammonia recovery, sulfur recovery, the de-naphthalene of coal gas and crude benzol, and now coke-oven gas is purification coal gas.After raw gas purifies, the effect of its maximum of competence exertion, otherwise its purposes is very narrow, generally only can make fuel burning boiler and use.Because AS technique has desulfuration and decyanation efficiency and be generally the H of coal gas after tower
2s and HCN are respectively 500mg/m
3, can meet industrial demanded fuel; Taking the ammonia in coal gas as alkali source, do not need exogenously added alkali, do not produce waste liquid, can not produce secondary pollution.Therefore, in the middle of gas purification " sulphur, ammonia " remove the AS circulation cleaning technique of general employing taking ammonia as absorption agent.AS technique pass through final cooling tower coal gas out, and sending into after thionizer is alkali source with depickling ammoniacal liquor after treatment, and coal gas is washed, and removes H in washing ammonia
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 ammonia still and rear ammonia and the acid gas (H of producing of extracting tower distillation
2s gas), acid gas adopts claus process device to produce sulphur, and ammonia adopts ammonia decomposition technique device combustion decomposition, contains SO owing to producing in the tail gas producing after sulphur and ammonia decompose
2, H
2the complicated ingredients such as S, elemental sulfur, ammonium salt, wherein SO
2concentration reaches more than 1%, far exceedes the highest permission SO of Acidic Gas Treating country
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, sends in the raw gas system before condensing unit gas blower and recycles, and distilled ammonia wastewater send biochemical system further to process.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 the front raw coke oven gas pipe of cold bulging gas fan, except corrosion gas main road and washing unit equipment, sulphur powder, ammonium salt mixes and is deposited in a large number in gas main with the condensed tar in coal gas, offgas duct is stopped up when serious, pipe inner suction approaches zero (when suction is normal at least-more than 1.5KPa), 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 control difficulty, thereby have influence on distilled ammonia wastewater quality, gas quality dispatches from the factory.AS tail gas recycle is sent into raw gas system utilization, has significantly accelerated pipeline inner product knot foreign material mixtures such as () sulphur powder, tar, inorganic salt, corrosive pipeline things and has stopped up.Offgas duct and gas main junction, measure by perforate, and the gas main of diameter phi 1400mm stops up 2/3, only has the passage of 400mm left and right, and suction is almost 0, due to the continuous working condition restriction of coal gas, makes the gas main cleaning of cannot stopping work.This is the existing common issue of coking industry gas purification AS technique, is never well solved.
Summary of the invention
The first object of the present invention be to provide a kind of purification efficiency high, can effectively prevent line clogging, ensure the purification process washing and purifying method of coal gas AS process tail gas smoothly; The second object is to provide the device of realizing this washing and purifying method.
The first object of the present invention is achieved in that and comprises tail gas flow-dividing control, cooling washing, tail gas recycle step, and concrete steps are:
A, tail gas flow-dividing control: will be divided at least two shunting tail gas from the tail gas of coal gas AS technique;
B, cooling washing: each that step a is shunted out shunting tail gas is sent in corresponding tail gas washing tower, and wash tail gas from bottom to top from top to bottom with the washing water of enriched ammonia, tail gas is fully contacted with washing water;
C, tail gas recycle: send raw gas system to recycle through pipeline in the tail gas after step b washing.
The second object of the present invention is to realize 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, between described washing water input aperture and tail gas input aperture, be provided with tail gas delivery port, described each tail gas input aperture 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 present invention shunts the tail gas after coal gas AS, 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, thereby effectively remove the SO in tail gas
2, H
2s, CO
2, the objectionable impurities such as elemental sulfur, tar.The present invention is by controlling ammonia content in washing water, makes the washing water of enriched ammonia maintain washing tower compared with the NH of balance
3/ H
2s is than lower operation, neither can be because of too low containing ammonia, and absorption driving force declines, again can be too high and strengthen the load of washing tower containing ammonia, thus ensure higher desulfuration efficiency, and do not have during the course by product to process, and simplify technique, reduce cost; PH value by controlling enriched ammonia washing water is in desirable alkaline state, can improve the ability that removes sulphur in tail gas, can not increase the weight of because alkalescence is too strong again the Corrosion blockage to equipment, pipeline, and can reduce the heavy burdens for the biochemical treatment waste water after follow-up discharge; Fully contact with washing water with low flow velocity in cooling tower by controlling tail gas, be conducive to improve the washing removal efficiency of objectionable impurities in tail gas; By packing layer is set in washing tower, can increase contact area and the duration of contact of tail gas and washing water, be particularly conducive to the wash-out of elemental sulfur in tail gas, tar.Therefore, the present invention have coal gas AS process tail gas purification efficiency high, can effectively prevent line clogging, ensure purification process feature smoothly.
Brief description of the drawings
Fig. 1 is the typical process schematic diagram of washing and purifying method of the present invention;
Fig. 2 is the principle schematic of washing purifying device of the present invention;
In figure: S100-tail gas flow-dividing control, the cooling washing of S200-, S300-tail gas recycle, S400-washing water are adjusted;
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, the outlet of 32-washing water, 33-depickling lean solution entrance, 34-alkali dispensing port, 4-washing water pump, 5-washing water discharge tube, 6-tail gas mixes 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
Below in conjunction with accompanying drawing, the present invention is further illustrated, but must not be limited the present invention by any way, and any change or the improvement done based on training centre of the present invention, all belong to protection scope of the present invention.
As shown in Figure 1, washing tail gas purifying method of the present invention comprises tail gas flow-dividing control, cooling washing, tail gas recycle step, and concrete steps are:
A, tail gas flow-dividing control: will be divided at least two shunting tail gas from the tail gas of coal gas AS technique;
B, cooling washing: each that step a is shunted out shunting tail gas is sent in corresponding tail gas washing tower, and wash tail gas from bottom to top from top to bottom with the washing water of enriched ammonia, tail gas is fully contacted with washing water;
C, tail gas recycle: send raw gas system to recycle through pipeline in the tail gas after step b washing.
Shunting tail gas in described step b is sent in corresponding tail gas washing tower with the flow velocity of 9 ~ 12m/s.
In described step b the washing water pH value of enriched ammonia be 9.5 ~ 10, NH
3content is 25 ~ 28g/L.
Described washing tail gas purifying method also comprises washing water set-up procedure: after the washing water washing tail gas in described step b, enter in liquid storage tank, adjust pH value and NH
3after content, return in step b and recycle.
H in the washing water of enriched ammonia in described step b
2when S content > 3.0g/L discharge exceed standard washing water fluid infusion be adjusted to qualified.
Described fluid infusion is for supplementing depickling lean solution.
Described pH value is adjusted and/or H
2the adjustment of S content is to adjust by adding alkali.
Described tail gas comprises the tail gas of acid gas retrieving arrangement and/or the tail gas of ammonia recycling device.
As shown in Figure 2, washing tail gas refining plant of the present invention 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 bottoms are provided with washing water delivery port 21 and tail gas input aperture 22 and top and are provided with washing water input aperture 23, between described washing water input aperture 23 and tail gas input aperture 22, be provided with tail gas delivery port 24, described each tail gas input aperture 22 is communicated with corresponding tail gas washing tower 2 tail gas delivery ports 12 respectively by pipeline, described tail gas delivery port 24 is communicated with raw gas system through pipeline.
In described tail gas washing tower 2, be provided with and washing water input aperture 23 is communicated with and Open Side Down washing water shower nozzle 25.
Between the inherent tail gas of described tail gas washing tower 2 input aperture 22 and tail gas delivery port 24, be provided with packing layer 26.
The tail gas input aperture 11 of described tail gas diverting valve 1 is mixed station 6 by tail gas and is communicated with the exhaust pipe of acid gas retrieving arrangement and the exhaust pipe of ammonia recycling device respectively.
The fractional flow control of described tail gas diverting valve 1 is 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 through pipeline and washing water pump 4, and described depickling lean solution entrance 33 is communicated with AS technique extracting tower by pipeline and valve.
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 32 and be communicated with washing water input aperture 23, washing water discharge tube 5 respectively through pipeline and washing water pump 4 and valve.
Described washing water are that pH value is 9.5 ~ 10, NH
3content is the enriched ammonia washing water of 25 ~ 28g/L.
Embodiment:
As shown in Figure 1:
S100: will be 6 × 10 from design maximum processing capability
4nm
3in the coal gas AS technique of/h, the tail gas of acid gas retrieving arrangement and the tail gas of ammonia recycling device are divided into two shunting tail gas after mixing;
S200: by variable valve, each shunting tail gas is sent in corresponding tail gas washing tower with the flow velocity of 9 ~ 12m/s, and with pH value be 9.5 ~ 10, NH
3content is that the washing water of 25 ~ 28g/L wash tail gas from bottom to top from top to bottom, and tail gas is fully contacted with washing water, and washing water flow out from washing tower bottom, and after washing, tail gas flows out from washing tower top;
S300: send raw gas system to recycle through pipeline in the tail gas flowing out from washing tower top after washing;
S400: the washing water that flow out from washing tower bottom are collected into washing water liquid storage tank to periodic monitor washing water pH value, NH
3content and H
2s content, when liquid storage tank liquid level is too low, pH value exceedes 9.5 ~ 10, NH
3content exceedes 25 ~ 28g/L and/or H
2when S content > 3.0g/L, take to supplement depickling lean solution in AS technique, add alkali and/or the discharge washing water that exceed standard, adjust washing water 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 to washing tower and recycles.
Coal gas AS process tail gas is through above washing, purifying, and its chief component index is as table 1.
chief component index contrast before and after table 1 coal gas AS process tail gas purifies
As can be seen from Table 1: H after tail gas clean-up
2s, SO
2, the leading indicator such as S significantly reduces.In addition, because washing tail gas hydromining replaces remained ammonia by depickling lean solution, ammonia content 9.82 g/L that volatilize in depickling lean solution are higher than the volatilization ammonia 2.17g/L of remained ammonia, therefore, and the NH after purifying in tail gas
3component concentration slightly increases by 0.11%.
After AS tail gas clean-up, 3 ~ 4 AS process system shut-down block clearings maintenance can be reduced every year, 219391.2Nm can be recycled every year more
3tail gas, eliminates shutting down tail gas uncontrollable discharge problem, has improved the utilization ratio that reclaims tail gas.AS process tail gas wash cooling efficiency improves, and solve exhaust pipe and stop up, to reduce three offgas duct of annual cleaning, each 100,000 yuan of calculating of cleaning up cost, 300,000 yuan of annual individual event recondition expenses of saving.
In addition, offgas duct life cycle in crude gas AS technique is 2 years, each replacement charge is with 28.2 ten thousand yuan of calculating (carbon steel bilayer), after adopting washing and purifying method of the present invention, estimate that life cycle is 6 years, 21.7 ten thousand yuan of investment costs (composition board individual layer), amount to 10.5 ten thousand yuan of annual saving update costs.
Claims (10)
1. a washing and purifying method for coal gas AS process tail gas, is characterized in that comprising tail gas flow-dividing control, cooling washing, tail gas recycle step, and concrete steps are:
A, tail gas flow-dividing control: will be divided at least two shunting tail gas from the tail gas of coal gas AS technique;
B, cooling washing: each that step a is shunted out shunting tail gas is sent in corresponding tail gas washing tower, and wash tail gas from bottom to top from top to bottom with the washing water of enriched ammonia, tail gas is fully contacted with washing water;
C, tail gas recycle: send raw gas system to recycle through pipeline in the tail gas after step b washing.
2. the washing and purifying method of tail gas according to claim 1, is characterized in that the shunting tail gas in described step b is sent in corresponding tail gas washing tower with the flow velocity of 9 ~ 12m/s.
3. according to the washing and purifying method of tail gas described in claim 1 or 2, the washing water pH value that it is characterized in that enriched ammonia in described step b is 9.5 ~ 10, NH
3content is 25 ~ 28g/L.
4. the washing and purifying method of tail gas according to claim 3, characterized by further comprising washing water set-up procedure: after the washing water washing tail gas in described step b, enter in liquid storage tank, adjust pH value and NH
3after content, return in step b and recycle.
5. according to the washing and purifying method of tail gas described in claim 1 or 2, it is characterized in that described tail gas comprises the tail gas of acid gas retrieving arrangement and/or the tail gas of ammonia recycling device.
6. realize the device of coal gas AS process tail gas washing and purifying method described in claim 1 ~ 5 any one for one kind, 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), between described washing water input aperture (23) and tail gas input aperture (22), be provided with tail gas delivery port (24), described each tail gas input aperture (22) 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.
7. washing purifying device according to claim 6, is characterized in that the washing water shower nozzle (25) being provided with in described tail gas washing tower (2) with washing water input aperture (23) are communicated with and Open Side Down.
8. washing purifying device according to claim 6, is characterized in that being provided with packing layer (26) between the inherent tail gas of described tail gas washing tower (2) input aperture (22) and tail gas delivery port (24).
9. washing purifying device according to claim 6, the fractional flow control that it is characterized in that described tail gas diverting valve (1) is 500 ~ 550Nm
3/ h.
10. washing purifying device according to claim 6, 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 outlets (32) are communicated with washing water input aperture (23) through pipeline and washing water pump (4), and described depickling lean solution entrance (33) is communicated with AS technique extracting tower by pipeline and valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410362397.9A CN104087349A (en) | 2014-07-29 | 2014-07-29 | Washing purification method and device of coal gas AS technique exhaust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410362397.9A CN104087349A (en) | 2014-07-29 | 2014-07-29 | Washing purification method and device of coal gas AS technique exhaust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104087349A true CN104087349A (en) | 2014-10-08 |
Family
ID=51635114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410362397.9A Pending CN104087349A (en) | 2014-07-29 | 2014-07-29 | Washing purification method and device of coal gas AS technique exhaust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104087349A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580475A (en) * | 2012-02-17 | 2012-07-18 | 宣化钢铁集团有限责任公司 | Method for recycling sulfuric acid tail gas in gas purification AS desulfurization process |
| CN203620481U (en) * | 2013-11-06 | 2014-06-04 | 云南煤业能源股份有限公司 | Tail gas washing device |
| CN204058401U (en) * | 2014-07-29 | 2014-12-31 | 云南煤业能源股份有限公司 | A kind of coal gas AS process tail gas washing purifying device |
-
2014
- 2014-07-29 CN CN201410362397.9A patent/CN104087349A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580475A (en) * | 2012-02-17 | 2012-07-18 | 宣化钢铁集团有限责任公司 | Method for recycling sulfuric acid tail gas in gas purification AS desulfurization process |
| CN203620481U (en) * | 2013-11-06 | 2014-06-04 | 云南煤业能源股份有限公司 | Tail gas washing device |
| CN204058401U (en) * | 2014-07-29 | 2014-12-31 | 云南煤业能源股份有限公司 | A kind of coal gas AS process tail gas washing purifying device |
Non-Patent Citations (2)
| Title |
|---|
| 罗小林等: "AS尾气系统设备腐蚀的原因及措施", 《燃料与化工》 * |
| 胡洪波等: "《生物工程单元操作实验》", 31 March 2004, 上海交通大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101717096B (en) | Technology for preparing desulfurizing agent ammonia water in sintering flue gas desulfurization by coking residual ammonia water | |
| CN104355343A (en) | Purification technology for ammonia recycled from wastewater from coal gasification | |
| CN103480260B (en) | Wet flue gas desulphurization technology by utilization of ethylene waste lye | |
| CN215086121U (en) | Coke oven gas ammonia process desulfurization regeneration tail gas processing system | |
| CN101653696B (en) | Sintering flue gas desulfurization wastewater treatment system and method for sintering finished ores | |
| CN204058401U (en) | A kind of coal gas AS process tail gas washing purifying device | |
| CN105692734A (en) | System and method for treating desulfurization wastewater concentrated solution | |
| CN101928608A (en) | Blast-furnace gas hydrogen chloride purifying and absorbing compound device and method | |
| CN104087349A (en) | Washing purification method and device of coal gas AS technique exhaust | |
| CN208732662U (en) | A kind of industrial wastewater recycling with high salt and reclamation set | |
| CN204841399U (en) | Desulfurization dust collector based on rotatory spray drying | |
| CN103691276A (en) | Method and device for improving utilization rate of alkali liquor at alkaline cleaning section of vacuum potassium carbonate desulfurization technique | |
| CN201930671U (en) | Horizontally arranged pretreatment device for flue gas desulfurization of sintering machine | |
| CN106315518B (en) | A kind of alkylation Waste acid treating device and method | |
| CN104971601B (en) | Acid gas vertical reactor and processing method | |
| CN207871894U (en) | Coking desulfurization/sulphur ammonium exhaust treatment system | |
| CN203417675U (en) | Inorganic liquid waste concentrating and solidifying device | |
| CN214862419U (en) | Blowing gas ammonia desulfurization system | |
| CN205099544U (en) | Food industry sewage treatment system | |
| CN105727715B (en) | A kind of Acidic Gas Treating technique and system | |
| CN214598217U (en) | Device for purifying flue gas after burning organic waste gas | |
| CN102515324A (en) | Method and device for treating acid mine wastewater | |
| CN104971600B (en) | A kind of sour gas tubular reactor and handling process method | |
| CN208327942U (en) | Coal gas selectivity desalting system | |
| CN104971599B (en) | A kind of sour gas reactor and handling process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141008 |