CN209508091U - A kind of gas circulation coking crude phenol cleaning production apparatus - Google Patents
A kind of gas circulation coking crude phenol cleaning production apparatus Download PDFInfo
- Publication number
- CN209508091U CN209508091U CN201920120629.8U CN201920120629U CN209508091U CN 209508091 U CN209508091 U CN 209508091U CN 201920120629 U CN201920120629 U CN 201920120629U CN 209508091 U CN209508091 U CN 209508091U
- Authority
- CN
- China
- Prior art keywords
- tower
- pipeline
- acidification
- connect
- sodium carbonate
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Treating Waste Gases (AREA)
Abstract
A kind of gas circulation coking crude phenol cleaning production apparatus, it is therefore an objective to which energy conservation and environmental protection simultaneously reduces equipment corrosion；The utility model includes decomposition tower, acidification tower, a crude phenols medial launder, acidification tower raw material pump, sodium carbonate liquor medial launder, sodium carbonate liquor pump, carbon dioxide balance tank, acidification bubbler and circulating fan；Decomposition tower top, bottom gas pipeline are connect with acidification top of tower, bottom gas pipeline respectively, the crude phenols pipeline of bottom one time is connect with a crude phenols medial launder top feed pipe, and bottom sodium carbonate liquor pipeline is connect with sodium carbonate liquor medial launder top feed pipe；Acidification tower bottom crude phenols pipeline, carbonic acid sodium channel are connect with finished product crude phenols pipeline, sodium carbonate liquor medial launder top feed pipe respectively；Acidification tower raw material pump intake pipeline is connect with a crude phenols medial launder lower part outlet pipeline, and outlet conduit is connect with acidification tower top feed pipe；The distribution of sodium carbonate liquor medial launder top feed pipe is connect with decomposition tower, acidification tower lower part sodium carbonate liquor pipeline.
Description
Technical field
The utility model relates to a kind of gases to recycle coking crude phenol cleaning production apparatus.
Background technique
Industrially from high temperature coal-tar, middle coalite tar extract phenolic substances method be, first to coal tar into
Row distillation, to obtain the relatively high carbolic oil fraction of phenol content.Its fraction is washed phenolic material with NaOH aqueous solution again
Matter is separated, and principle is that NaOH reacts generation sodium phenolate solution with phenolic substances (process is also washing process).Then lead to
It crosses and crude phenols is made with acidic materials decomposition sodium phenolate (process is also decomposable process).China's sodium phenolate decomposes production crude phenols at present
Mainly using flue gas, (active principle is CO2) decompose and two methods of sulfuric acid decomposition, the scientific and technological Limited Liability of Shandong Dezhou gold energy
House journal CN102206140A, which is announced, uses sulfur dioxide (SO2) gas decomposed, also there is document report using pure CO2Point
There are certain drawbacks in solution, the above several method.It is the CO utilized in flue gas that flue gas, which is decomposed,2Generation is reacted with sodium phenolate
Crude phenols and sodium carbonate (Na2CO3), due to containing a small amount of SO in flue gas2Gas (50mg/Nm3--200mg/Nm3) and a certain amount of
Water, have sulfurous acid generation in decomposable process, not only equipment caused to corrode, Na after disassembly2CO3In aqueous solution also
Na can be contained2SO3Equal impurity, are unfavorable for Na2CO3Recycling.In addition flue gas CO2Content it is very low, according to flue gas come
Its CO of source difference2Content generally 10%--20% and reaction efficiency it is very low, decompose gas there are about 80%--90% and be discharged by system
In the middle of atmosphere, environment is caused to seriously affect.With sulfur dioxide (SO2) gas decompose when, since the presence of water has Asia
Sulfuric acid generates, severe corrosion equipment, while unreacted sulfur dioxide (SO2) be discharged into atmosphere and have an impact to environment.Have a
Other enterprise uses pure CO2It decomposes, due to CO2Concentration is high, there is sodium bicarbonate (NaHCO3) Crystallization Plugging equipment the problem of.Sulfuric acid point
Solution has a large amount of sodium sulphate (Na2SO4) waste liquid generation, this sodium sulphate (Na2SO4) waste liquid contains many harmful substances, it is useless at present
Water treatment technology cannot be handled very well.Sulfuric acid process has continuous decomposition and interval to decompose two kinds of techniques when decomposing sodium phenolate, no matter adopt
Require to mix sulfuric acid with sodium phenolate and control 90 DEG C of decomposition temperature with that technique, sodium phenolate containing phenol 20%--40% it
Between, when sulfuric acid decomposition is added, the sulfuric acid for not being in time for reaction can exist in the form of dilute sulfuric acid in equipment part, under these conditions
Equipment is corroded very serious.The sewage disposal technology that sulfuric acid process decomposes current China of sodium sulfate waste liquid that sodium phenolate generates is difficult
Processing when Biochemical method sewage, if sodium sulphate content is exceeded to will cause activated sludge mortality, leads to system when serious
It is not normally functioning.When batch technology sulfuric acid decomposition sodium phenolate, since decomposable process is exothermic reaction, in sulfuric acid decomposition operation
A large amount of " acid mist " can be also generated, operating environment is seriously affected.Although it is upper to disclose record persulfuric acid decomposition with the presence of technical literature
State solution to the problem, " acid mist " generated when such as being washed and decomposed with sodium phenolate；To Na2SO4Waste liquid carries out crystallization treatment etc.；
It fails to fundamentally solve the problems, such as that environment is polluted in equipment corrosion and " three wastes ".
Utility model content
The utility model aim is to overcome the shortcomings of above-mentioned prior art, provides a kind of easy to operate, energy conservation and environmental protection, reduction
Gas recycles coking crude phenol during equipment burn into extends the high temperature coal-tar of the cycle of operation, middle coalite tar processing and refining
Cleaning production apparatus.
The utility model include decomposition tower, acidification tower, a crude phenols medial launder, acidification tower raw material pump, in sodium carbonate liquor
Between slot, sodium carbonate liquor pump, carbon dioxide balance tank, acidification bubbler and circulating fan.Decomposition tower is filler for flower ring tower, installation
On ground, top gas pipeline is connect with acidification top of tower gas pipeline, and bottom gas pipeline is acidified tower bottom gas pipeline
Connection, the crude phenols pipeline of bottom one time connect with a crude phenols medial launder top feed pipe, the sodium carbonate liquor pipeline of bottom and
The connection of sodium carbonate liquor medial launder top feed pipe；Acidification tower is filler for flower ring tower, is mounted on ground, top gas pipeline
Connect with decomposition tower top gas pipeline, bottom gas pipeline is connect with decomposition tower bottom gas pipeline, bottom crude phenols pipeline with
The connection of finished product crude phenols pipeline, bottom carbonic acid sodium channel are connect with sodium carbonate liquor medial launder top feed pipe；In crude phenols
Between slot be mounted on ground, upper part feed pipe is connect with the crude phenols pipeline of decomposition tower lower part one time, lower part outlet pipeline and acidification
The connection of tower raw material pump intake pipeline；Acidification tower raw material pump is mounted on ground, and inlet duct goes out with a crude phenols medial launder lower part
Mouth pipeline connection, outlet conduit are connect with acidification tower top feed pipe；Sodium carbonate liquor medial launder is mounted on ground, upper part
Feed pipe distribution is connect with decomposition tower, acidification tower lower part sodium carbonate liquor pipeline, and lower part outlet pipeline and sodium carbonate liquor pump
Inlet duct connection；Sodium carbonate liquor pump is mounted on ground, inlet duct and sodium carbonate liquor medial launder lower part outlet pipeline
Connection, outlet conduit are sent pipeline outside with sodium carbonate liquor and are connect；Carbon dioxide balance tank is mounted in about 12 meters of high platforms, gas
Body import converges pipeline and connect with decomposition tower and acidification overhead gas, and gas vent is connect with circulating fan gas access；Acidification
Bubbler is mounted on acidification tower bottom and connect with 95% fresh carbon dioxide service；Circulating fan is mounted on ground, gas
Entrance is connect with carbon dioxide balance tank, and gas vent converges pipeline and connect with decomposition tower and acidification tower bottom gas access；For
The pressure of the balanced gas circulatory system is provided with individual calling on carbon dioxide balance tank top and cuts down and single-suction valve.
The individual calling cuts down the model and type with single-suction valve: individual calling cuts down model are as follows: HXF7 band adapter tube (back-fire relief) type, single suction are cut down
Model are as follows: HXF-DX type.The individual calling, which is cut down, to be mounted on carbon dioxide balance canister body central upper portion line；Single-suction valve is mounted on two
On carbonoxide compensator cylinder central upper portion line.Acidification bubbler is mounted on the centre bit of acidification tower bottom liquid level or less 100mm
It sets.It is acidified at tower lower layer filler lower part 200mm and setting model RH-500 type carbon dioxide is dense on circulating fan outlet conduit
Spend detector.
When system bears positive pressure, single breathing valve opens exhaled gas and releases positive pressure；When system bears negative pressure, single-suction valve is beaten
Open sucking AB Air Bleed negative pressure.It thereby guarantees that system pressure in a certain range, guarantee to be safely operated and reduces gas emissions.
The diameter and inspiratory capacity of single inlet valve are determined according to the fresh carbon dioxide concentration of sodium phenolate treating capacity and supplement, design suction pressure
Power is -500Pa, sucks air when system pressure is low with balance system pressure and is not less than -500Pa；The diameter that individual calling is cut down
It is also to be determined according to the fresh carbon dioxide concentration of sodium phenolate treating capacity and supplement with expiration amount, single breathing valve design exhalation pressure is
+ 500Pa, gas is discharged when system pressure is high, and to the burning of tar distillation system heating furnace, (coking crude phenol production is from coal
Extracted in tar, extraction process has a tar distillation heating furnace), and balance system pressure is not higher than+500Pa.
The decomposition tower uses packed tower, packed height: 2 × 4 meters of stainless steel (304) Pall ring fillers, tower body material: no
It becomes rusty steel (304), tower height: 22.36 meters；The acidification tower uses packed tower, packed height: 2 × 4 meters of stainless steel (304) Pall rings
Filler, tower body material: stainless steel (304), tower height: 22.36 meters；
Decomposition tower, acidification tower to control inlet tower gas body carbon dioxide in use process should not be excessive；Decomposition tower, acidification tower
Use process to control bottoms level should not wide fluctuations, liquid level is excessively high possible to occur " flooding " accident, the too low meeting of liquid level
Influence the separating effect of crude phenols and sodium carbonate liquor；Carbon dioxide balance pot bottom will have leakage fluid dram, exclude condensate liquid in time；It follows
Ring blower will have leakage fluid dram, exclude condensate liquid in time；Gas concentration lwevel inspection should be arranged in acidification tower bottom, circulating fan outlet
It surveys, to accurately control each position gas carbon dioxide concentration.
The utility model is greater than 95% CO using concentration2Adjust recyclegas CO2Concentration, recyclegas and sodium phenolate are dividing
Inversely contact is once decomposed in solution tower；Some undecomposed sodium phenolate, is made a gift to someone in decomposition product
Further decomposition solution is inversely contacted in acidification tower with recyclegas and obtains crude phenols finished product and Na2CO3Solution, Na2CO3Solution recycling
It utilizes.The unreacting gas that decomposition tower, acidification tower top escape enters carbon dioxide balance tank, then is transported to decomposition by circulating fan
Tower and acidification tower bottom are recycled.It is greater than 95% in the acidification bubbler supplement concentration that circulating fan exported and be acidified tower bottom
CO2Guarantee recyclegas gas concentration lwevel balance.
The utility model compared with prior art, establishes the decomposition gas circulatory system, and 95% CO is greater than with concentration2As
Gas-circulating system supplements CO2Extra a small amount of gas is discharged into tar distillation system heating furnace and burned, solves existing phenol by gas source
Equipment existing for sodium salt operation splitting corrodes (sulfuric acid decomposition and SO2Decompose), the cycle of operation short (pure CO2Decompose), tail gas pollution ring
The problems such as border (flue gas decomposition), long-term operation and clean manufacturing are realized, section high, easy to operate with automatization level
Can be environmentally friendly, with low investment, good in economic efficiency the advantages that.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
In figure: K01 is decomposition tower, and K02 is acidification tower, and P01 is acidification tower raw material pump, and P02 is sodium carbonate liquor pump, B01
For circulating fan, T01 is a crude phenols medial launder, and T02 is sodium carbonate liquor medial launder, and T03 is carbon dioxide balance tank, M01
To be acidified bubbler.
1 is sodium phenolate entrance, and 2 be to be acidified the fresh carbon dioxide of bubbler to fill into mouth, 3 exported for circulating fan it is fresh
Carbon dioxide fills into mouth, and 4 send mouth outside for sodium carbonate liquor, and 5 export for product crude phenols.
Specific embodiment
Decomposition tower (K01), acidification tower (K02) are all made of filler for flower ring tower；Decomposition tower (K01) is mounted on ground, top
Gas pipeline is connect with acidification top of tower gas pipeline, and bottom gas pipeline is connect with acidification tower bottom gas pipeline, bottom one
Secondary crude phenols pipeline is connect with crude phenols medial launder (T01) top feed pipe, the sodium carbonate liquor pipeline and sodium carbonate of bottom
The connection of solution medial launder (T02) top feed pipe；Acidification tower (K02) is mounted on ground, and bottom crude phenols pipeline and finished product are thick
The connection of phenol pipeline, bottom carbonic acid sodium channel are connect with the top sodium carbonate liquor medial launder (T02) feed pipe；Among crude phenols
Slot (T01) is mounted on ground, and upper part feed pipe is connect with the crude phenols pipeline of decomposition tower lower part one time, lower part outlet pipeline and acid
Change the connection of tower (K02) raw material pump intake pipeline；Acidification tower (K02) raw material pump is mounted on ground, inlet duct and a crude phenols
The connection of medial launder (T01) lower part outlet pipeline, outlet conduit are connect with the acidification top tower (K02) feed pipe；Sodium carbonate liquor
Medial launder (T02) is mounted on ground, and the distribution of upper part feed pipe and decomposition tower (K01), the acidification lower part tower (K02) sodium carbonate are molten
The connection of liquid pipe road, lower part outlet pipeline are connect with sodium carbonate liquor pump (P02) inlet duct；Sodium carbonate liquor pumps (P02) installation
On ground, inlet duct is connect with sodium carbonate liquor medial launder (T02) lower part outlet pipeline, outlet conduit and sodium carbonate liquor
Send pipeline connection outside；Carbon dioxide balance tank (T03) is mounted in a high platform, gas feed and decomposition tower (K01) and
Acidification tower (K02) top gas body converges pipeline connection, and gas vent is connect with the gas access circulating fan (B01)；It is acidified bubbler
(M01) it is mounted on the acidification tower bottom (K02) and is connect with 95% fresh carbon dioxide service；Circulating fan (B01) is mounted on
Ground, gas access are connect with carbon dioxide balance tank (T03), gas vent and decomposition tower (K01) and acidification bottom tower (K02)
Converge pipeline connection in gas access.
On the carbon dioxide balance tank top (T03), setting single suction is cut down, and single-suction valve specification is: DN80, HXF-DX type work as system
Air is sucked when pressure is low, and -500Pa is not less than with balance system pressure；It is arranged on the carbon dioxide balance tank top (T03)
Individual calling is cut down, and single-suction valve specification is: gas is discharged to tar in DN80, HXF7 band adapter tube (back-fire relief) type when system pressure is high
Distallation systm heating furnace is burned, and is not higher than 500Pa with balance system pressure.
External sodium phenolate is transported to the decomposition tower top (K01) and inversely contacts with the recyclegas from tower bottom, exhausted big portion
Divide sodium phenolate by the carbon dioxide (CO in recyclegas2) bottom decomposition tower (K01) is flowed into after decomposition.When tower bottom stops one section
Between complete crude phenols and sodium carbonate (Na2 CO3) solution separation, sodium carbonate (Na2 CO3) solution flows automatically to its storage tank (T02), slightly
Phenol flows automatically to a crude phenols medial launder (T01).
By in the crude phenols that once decompose also containing some unreacted sodium phenolate, will with acidification tower raw material pump (P01)
It is sent to the acidification tower top (K02) and recyclegas (the effective component CO from tower bottom2) inversely contact, sodium phenolate quilt therein
Carbon dioxide (CO in recyclegas2) acidification bubbler that acidification lower part tower (K02) is flowed into after decomposition, with dense in bubbler
Degree is greater than 95% carbon dioxide (CO2) gas, carry out bubbling acidification, it is acidified after material stopped in acidification tower (K02) tower bottom
A period of time completes crude phenols and sodium carbonate (Na2 CO3) solution separation, sodium carbonate (Na2 CO3) solution flows automatically to its storage tank
(T02), crude phenols reach quality requirement factory.
Unreacted gas escapes into carbon dioxide balance tank (T03) by decomposition tower (K01), acidification tower (KO2) top,
It is used again by the bottom cycle that circulating fan (B01) is respectively delivered to decomposition tower (K01) and is acidified tower (K02).In circulating fan
(B01) acidification bubbler (M01) the supplement concentration for exporting and being acidified the bottom tower (KO2) is greater than 95% carbon dioxide (CO2) gas
Body keeps system carbon dioxide (CO2) balance.
Claims (4)
1. a kind of gas recycles coking crude phenol cleaning production apparatus, it is characterized in that among including decomposition tower, acidification tower, a crude phenols
Slot, acidification tower raw material pump, sodium carbonate liquor medial launder, sodium carbonate liquor pump, carbon dioxide balance tank, acidification bubbler and circulation
Blower；Decomposition tower, acidification tower are all made of filler for flower ring tower；Decomposition tower is mounted on ground, top gas pipeline and acidification tower top
Portion's gas pipeline connection, bottom gas pipeline with acidification tower bottom gas pipeline connect, the crude phenols pipeline of bottom one time with once slightly
The connection of phenol medial launder top feed pipe, the sodium carbonate liquor pipeline and sodium carbonate liquor medial launder top feed pipe of bottom connect
It connects；Acidification tower is mounted on ground, and bottom crude phenols pipeline is connect with finished product crude phenols pipeline, and bottom carbonic acid sodium channel and sodium carbonate are molten
The connection of liquid medial launder top feed pipe；Crude phenols medial launder is mounted on ground, upper part feed pipe and decomposition tower lower part
Crude phenols pipeline connection, lower part outlet pipeline are connect with acidification tower raw material pump intake pipeline；Acidification tower raw material pump is mounted on ground
Face, inlet duct are connect with a crude phenols medial launder lower part outlet pipeline, and outlet conduit and acidification tower top feed pipe connect
It connects；Sodium carbonate liquor medial launder is mounted on ground, the distribution of upper part feed pipe and decomposition tower, acidification tower lower part sodium carbonate liquor
Pipeline connection, lower part outlet pipeline are connect with sodium carbonate liquor pump intake pipeline；Sodium carbonate liquor pump is mounted on ground, entrance
Pipeline is connect with sodium carbonate liquor medial launder lower part outlet pipeline, and outlet conduit is sent pipeline outside with sodium carbonate liquor and connect；Dioxy
Change Carbon balance tank to be mounted in a high platform, gas feed converges pipeline and connect with decomposition tower and acidification overhead gas, gas
Body outlet is connect with circulating fan gas access；Acidification bubbler is mounted on acidification tower bottom and supplies with 95% fresh carbon dioxide
It is connected to pipeline；Circulating fan is mounted on ground, and gas access is connect with carbon dioxide balance tank, gas vent and decomposition tower and
Converge pipeline connection in acidification tower bottom gas access.
2. gas as described in claim 1 recycles coking crude phenol cleaning production apparatus, it is characterized in that in carbon dioxide balance tank
Top is cut down provided with individual calling and single-suction valve；The diameter and inspiratory capacity of single inlet valve according to sodium phenolate treating capacity and supplement fresh two
It aoxidizes concentration of carbon to determine, design suction pressure power is -500Pa, sucks air when system pressure is low with balance system pressure
Not less than -500Pa.
3. gas as claimed in claim 1 or 2 recycles coking crude phenol cleaning production apparatus, it is characterized in that diameter that individual calling is cut down and
Expiration amount is also to determine according to the fresh carbon dioxide concentration of sodium phenolate treating capacity and supplement, and single breathing valve design exhalation pressure is+
500Pa。
4. gas as claimed in claim 1 or 2 recycles coking crude phenol cleaning production apparatus, it is characterized in that the decomposition tower, acid
Change one section of tower that tower is two layers of stainless steel Pall ring filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920120629.8U CN209508091U (en) | 2019-01-24 | 2019-01-24 | A kind of gas circulation coking crude phenol cleaning production apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920120629.8U CN209508091U (en) | 2019-01-24 | 2019-01-24 | A kind of gas circulation coking crude phenol cleaning production apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209508091U true CN209508091U (en) | 2019-10-18 |
Family
ID=68202391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920120629.8U Active CN209508091U (en) | 2019-01-24 | 2019-01-24 | A kind of gas circulation coking crude phenol cleaning production apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209508091U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109651092A (en) * | 2019-01-24 | 2019-04-19 | 山西永东化工股份有限公司 | A kind of gas circulation coking crude phenol clean preparation method and its device |
-
2019
- 2019-01-24 CN CN201920120629.8U patent/CN209508091U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109651092A (en) * | 2019-01-24 | 2019-04-19 | 山西永东化工股份有限公司 | A kind of gas circulation coking crude phenol clean preparation method and its device |
| CN109651092B (en) * | 2019-01-24 | 2024-01-05 | 山西永东化工股份有限公司 | Clean production method and device for gas circulation coking crude phenol |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109651092A (en) | A kind of gas circulation coking crude phenol clean preparation method and its device | |
| CN209508091U (en) | A kind of gas circulation coking crude phenol cleaning production apparatus | |
| CN102206140A (en) | Method and production system for separating and recovering phenol oil and simultaneously producing sodium sulfite through sodium phenolate acidolysis | |
| CN203699916U (en) | Phosphorus-containing tail gas washing and recycling device for yellow phosphorus production | |
| CN101642660B (en) | Method for treating exhaust gas in process of producing crude phenol from coal tar | |
| CN207056310U (en) | The exhaust gas processing device of sour gas Sulphuric acid | |
| CN102381943B (en) | System and technology for producing coked crude phenol | |
| CN106039970A (en) | Method for removing sulfur dioxide from sulfuric acid industrial tail gas and recovering sulfuric acid, and apparatus thereof | |
| CN202265523U (en) | Production system for coking crude phenol | |
| CN112521253B (en) | Carbon dioxide decomposition system and process of sodium phenolate | |
| CN205925408U (en) | Nitrogen oxide's device during processing condensation is sour | |
| CN110590509A (en) | Production method for carbon dioxide cyclic decomposition coking crude phenol coproduction desulfurizer | |
| CN211677144U (en) | Dimethyl phosphite production tail gas processing apparatus | |
| CN103523836B (en) | A kind of sulfur-containing wasting alkali liquid processing method | |
| CN104689702B (en) | High-temperature high-concentration sulfur dioxide tail gas desulfurization system and method | |
| CN211487150U (en) | Acid waste gas absorption device | |
| CN109422321B (en) | Treatment system and method for cyclohexanone production wastewater | |
| CN114082298A (en) | Energy-saving and difficult-to-block hydrogen sulfide deep removal tower and use method thereof | |
| CN203469786U (en) | Respiratory gas processing device applicable to titanium tetrachloride production process | |
| CN220900008U (en) | Device for producing bromine by alkaline absorption | |
| CN109748377A (en) | Pure oxygen recycles ozone treatment sewage method processed | |
| CN207755797U (en) | Acyl chlorides rectification under vacuum waste water reclaiming device | |
| CN215250511U (en) | Phenolate decomposing tower | |
| CN110844887B (en) | Method and device for treating hydrogen sulfide | |
| CN110845063A (en) | Acetylene sodium hypochlorite cleaning waste liquid circulation zero-emission system for PVC production process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |