CN106861385A - A kind of wet desulfurizing process of sulphur-containing exhaust gas - Google Patents
A kind of wet desulfurizing process of sulphur-containing exhaust gas Download PDFInfo
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- CN106861385A CN106861385A CN201710164576.5A CN201710164576A CN106861385A CN 106861385 A CN106861385 A CN 106861385A CN 201710164576 A CN201710164576 A CN 201710164576A CN 106861385 A CN106861385 A CN 106861385A
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- sulphur
- deodorant
- exhaust gas
- containing exhaust
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8603—Removing sulfur compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8603—Removing sulfur compounds
- B01D53/8612—Hydrogen sulfide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/606—Carbonates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/306—Organic sulfur compounds, e.g. mercaptans
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- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention proposes a kind of wet desulfurizing process of sulphur-containing exhaust gas, comprises the following steps：（1）Oxidation reaction：Sulphur-containing exhaust gas are made to be fully contacted with deodorization agent solution using spray mode in absorption tower；（2）Deodorant is recycled：The deodorization agent solution of failure is delivered in jet pump, jet pump is with deodorization agent solution as medium, suction air, active ingredient in deodorant is fully contacted to mix and carries out oxygen carrying regenerative response with oxygen in the presence of activator, be delivered to after regeneration absorption tower interior circulation using until its can not regenerate it is entirely ineffective；（3）Foam removal and discharge：By step（1）Gas after middle oxidation is discharged after defoaming separator isolates drop therein and foam.Present invention aim at provide it is a kind of the sulphur-containing exhaust gas such as hydrogen sulfide, mercaptan, thioether sulfides, organic sulfur compound in sulphur-containing exhaust gas are carried out with desulfurization process, while extending the deodorant service life new wet desulfurizing process that recycles it.
Description
Technical field
The invention belongs to environmental technology field, more particularly to a kind of wet desulfurizing process of sulphur-containing exhaust gas.
Background technology
Atmosphere pollution is one of presently the most prominent environmental problem of China.Wherein, industrial waste gas is atmosphere pollution
One of main source.And with new national standard GB31573-2015《The appearance of inorganic chemistry emission of industrial pollutants standard》Go out
Platform, the desulfurized effect of past desulphurization plant does not reach new discharge standard much.And, the power generation of China is sent out with firepower
Based on electricity, thermal power plant is generated electricity using coal as main fuel, and directly burning discharges substantial amounts of sulfide to coal, causes big compression ring
Border is polluted, harm human health, corrosion construction material, restriction economic development.And being incremented by with installed capacity, the row of sulfide
High-volume also it is being continuously increased.Strengthen the important guarantee that environmental protection work is China's the Implement of sustainable development strategy.Increase vulcanization
The control dynamics of thing just seem very urgent and necessary.Simultaneously in order to cater to new standard requirement, it is necessary to R＆D costs it is low, effect
Rate sulfur method and device high.
In past technique, nucleus equipment desulfuration absorbing tower uses spraying type absorption structure substantially, generally sloughs
It is the gases such as sulfur dioxide, sulfur trioxide in sulphur-containing exhaust gas, few hydrogen sulfide for the irritant smell of sulphur-containing exhaust gas,
The desulphurization plant of mercaptan, thioether sulfides.
Hydrogen sulfide in sulfide is a kind of inorganic compound, is under normal circumstances a kind of colourless, inflammable sour gas,
Band stench, smell such as addled egg when concentration is low；On the contrary without smell when concentration is high, the hydrogen sulfide of high concentration can benumb smell god
Through.The aqueous solution of hydrogen sulfide, hydrosulphuric acid, is a kind of weak acid, and when it is heated, hydrogen sulfide is escaped from water again.Hydrogen sulfide is one
Acute severe toxicity is planted, sucking a small amount of high-concentration hydrogen sulfide can be in fatal in the short time.The hydrogen sulfide of low concentration to eye, respiratory system and
Nervous centralis all has an impact.Thioether is water insoluble, irritant smell, poisonous, can cause nausea during low concentration, anorexia,
High concentration steam Central nervous system has paralysis to act on；Low-grade thioalcohol typically has niff, poisonous and disgusting
Smell, can cause headache, nausea during inhalation of low concentration steam；There is anesthetic effect in higher concentration, and high concentration can cause breathing fiber crops
Numbness is lethal.Its steam can form explosive mixture with air.Meet naked light, hyperpyrexia easily combustion explosion.It can thus be appreciated that sulfur-bearing is useless
Hydrogen sulfide, mercaptan, thioether sulfides have extremely serious harm to environment and human body in gas, for vulcanizing in sulphur-containing exhaust gas
Hydrogen, mercaptan, thioether desulfurization process it is also particularly important.
Under increasingly stricter discharge standard, the desulfurizer in past plant area cannot meet new regulation requirement
Discharge standard.Under this major premise, new sulfur removal technology must be developed reasonably, for cost, the project of upgrading and rebuilding
A kind of method undoubtedly therein, i.e., on the basis of original desulfurizer, adding new process equipment makes waste gas row up to standard
Put.
In sum, as country administers the increasingly strict of requirement to atmosphere pollution, technically sustained improvement enters one
Step excavates the potentiality of existing desulfurizer, and the effect of lifting desulfurizer, has become a kind of trend and requirement conscientiously.
The content of the invention
Based on above mentioned problem, a kind of hydrogen sulfide, mercaptan, thioether etc. in sulphur-containing exhaust gas are vulcanized present invention aim at providing
The sulphur-containing exhaust gas such as thing, organic sulfur compound carry out desulfurization process, while extend that deodorant service life makes that it recycles is new
Wet desulfurizing process.
For problem above, there is provided following technical scheme：A kind of wet desulfurizing process of sulphur-containing exhaust gas, it is characterised in that
Comprise the following steps：
（1）The oxidation reaction of sulphur-containing exhaust gas：Sulphur-containing exhaust gas are introduced in absorption tower, sulfur-bearing is made using spray mode in absorption tower
Waste gas is fully contacted with deodorization agent solution makes hydrogen sulfide and/or organic sulfur compound in sulphur-containing exhaust gas make in catalyst with deodorant
Sodium salt and/or sodium sulfonate are generated with lower generation oxidation reaction, the deodorization agent solution is containing activator and with Na2CO3It is main body
Alkaline solution, its oxidation equation formula is：
（2）The recycling utilization of deodorant：To there is the deodorization agent solution that fails after oxidation reaction from absorption with sulphur-containing exhaust gas
It is delivered in deodorant storage tank after tower discharge, is then delivered in jet pump in the presence of centrifugal pump, jet pump is with deodorant
Solution is medium, produces suction suction air, make oxygen in active ingredient in deodorant and air deodorant itself into
It is fully contacted in the presence of point activator and mixes and carry out oxygen carrying regenerative response, the deodorization agent solution after regeneration is again introduced into deodorization
It is transported in agent storage tank and in the presence of centrifugal pump in absorption tower with spray mode and sulphur-containing exhaust gas secondary response again, it is described de-
Smelly dose of repetitive cycling is carried out by sulphur-containing exhaust gas utilization-regeneration-recycling process, until its can not regenerate it is entirely ineffective after from deodorization
Discharge in agent storage tank；
（3）Foam removal and discharge：By above-mentioned steps（1）After gas after middle oxidation is discharged from absorption tower, then by defoaming separator
Chimney discharge is delivered to by blower fan after isolating drop therein and foam.
The present invention is further arranged to, and the deodorization agent solution is the alkaline solution based on Na2CO3, its Na2CO3
Mass percent concentration be 10-15%, phase transfer catalyst mass percent concentration is that 1-5 ‰, desulfurizing agent mass percent are dense
Spend for 1-10% and activator mass percent concentration are 5-10 ‰.
The present invention is further arranged to, the step（3）The middle drop for isolating defoaming separator and foam are delivered to
Reused as deodorant in deodorant storage tank.
The present invention is further arranged to, and the deodorant storage tank to be provided with connected with absorption tower carries out pressure release with to its inside
Pressure relief pipe.
The present invention is further arranged to, the step（2）In by detecting the deodorization after being recycled in deodorant storage tank
The content of the active ingredient in agent solution judges whether deodorant is entirely ineffective.
The present invention is further arranged to, the step（2）The middle deodorant entirely ineffective by detection is directly by deodorant
Outlet discharge on storage tank.
Compared with prior art, the beneficial effects of the present invention are：
（1）The invention provides the wet desulfurizing process of hydrogen sulfide, organic sulfur compound in a kind of removal sulphur-containing exhaust gas, the technical side
The sulphur that sulphur-containing exhaust gas and deodorization agent solution be fully contacted in making sulphur-containing exhaust gas is made using spray mode first in absorption tower in case
Change hydrogen and/or organic sulfur compound and oxidation reaction generation sodium salt and/or sodium sulfonate, oxidation occur under catalyst action with deodorant
Product is nontoxic, odorless salt, hydrogen sulfide, organic sulfur compound effectively in removal sulphur-containing exhaust gas；
（2）The removal raw material deodorant that is used in the technical program is renewable to be recycled, and the deodorization agent solution of failure is in centrifugation
It is delivered in jet pump in the presence of pump, jet pump produces suction suction air, in making deodorant with deodorization agent solution as medium
Active ingredient be fully contacted in the presence of deodorant self component activator with the oxygen in air and mix and carry out oxygen carrying
Regenerative response, the deodorization agent solution after regeneration is transported in absorption tower with spray mode and sulphur-containing exhaust gas secondary response again again,
Entered and repeated recycling process, until it can not regenerate entirely ineffective, the use cost of user can not only be reduced, and
The oxidation of deodorant and regenerative response are combined, the service life of deodorant is effectively extended；
（3）The wet desulfurizing process technological process that the present invention is provided is simple, and easy to operate, desulfurized effect is good, and exploitativeness is strong, together
When energy saving, use cost is low.
Brief description of the drawings
Fig. 1 is the structural representation of wet desulfurizing process in the embodiment of the present invention.
Illustrate in figure：1- absorption towers；11- air intakes；12- gas outlets；13- spray heads；14- leakage fluid drams；2- deodorants are stored up
Tank；21- liquid outlets；22- deodorant entrances；23- outlets；24- pressure relief pipes；25- lists and indexes mouth；3- jet pumps；4- centrifugal pumps；
5- defoaming separators；51- exhaust outlets；52- floss holes；6- blower fans；7- chimneys；8- pipelines.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the invention is described in further detail.Hereinafter implement
Example is not limited to the scope of the present invention for illustrating the present invention.
As shown in figure 1, a kind of wet desulfurizing process of sulphur-containing exhaust gas, comprises the following steps：
（1）The oxidation reaction of sulphur-containing exhaust gas：Sulphur-containing exhaust gas are introduced in absorption tower 1, makes to contain using spray mode in absorption tower 1
Sulphur waste gas is fully contacted with deodorization agent solution makes hydrogen sulfide and/or organic sulfur compound in sulphur-containing exhaust gas with deodorant in catalyst
Effect is lower to there is oxidation reaction generation sodium salt and/or sodium sulfonate, and the deodorization agent solution is containing activator and with Na2CO3Based on
The alkaline solution of body, its oxidation equation formula is：
As shown in figure 1, the technique be mainly used in removing containing hydrogen sulfide, mercaptan, thioether sulfides sulphur-containing exhaust gas, operation letter
Single, desulfurized effect is good.The bottom on absorption tower 1 is provided with and is passed through the air intake 11 of sulphur-containing exhaust gas and top is provided with waste gas after discharge purification
Gas outlet 12, spray head 13 is provided with absorption tower 1, after sulphur-containing exhaust gas are entered by the air intake 11 on absorption tower 1, deodorant is stored up
The deodorant of storage is transported to hydrogen sulfide, sulphur at spray head 13 in ejection and sulphur-containing exhaust gas by centrifugal pump 4 in advance in tank 2
Alcohol, thioether sulfides are fully contacted and oxidation reaction occur, and sulfide is converted into the nontoxic sulfosalt of soluble in water and odorless.
Absorption tower 1 can use eddy flow tower or packed tower.
（2）The recycling utilization of deodorant：By with sulphur-containing exhaust gas occur the deodorization agent solution that fails after oxidation reaction from
Absorption tower 1 is delivered in deodorant storage tank 2 after discharging, and is then delivered in jet pump 3 in the presence of centrifugal pump 4, jet pump 3
With deodorization agent solution as medium, suction suction air is produced, make the oxygen in the active ingredient and air in deodorant in deodorization
It is fully contacted in the presence of agent self component activator and mixes and carry out oxygen carrying regenerative response, the deodorization agent solution after regeneration is again
It is transported in into deodorant storage tank 2 and in the presence of centrifugal pump 4 in absorption tower 1 with spray mode and sulphur-containing exhaust gas again
Reaction, the deodorant repetitive cycling is carried out by sulphur-containing exhaust gas utilization-regeneration-recycling process, until it can not regenerate completely
The discharge from deodorant storage tank 2 after failure.
As shown in figure 1, the bottom on absorption tower 1 is provided with leakage fluid dram 14, the leakage fluid dram 14 is by pipeline 8 and deodorant storage tank
2 are connected, and the bottom of the deodorant storage tank 2 is provided with liquid outlet 21, and branch forms two-way after the connection water pump 4 of deodorant storage tank 2,
It is used to coordinate the sweetening process in absorption tower 1 all the way, another road is used for the recycling utilization of above-mentioned deodorant.
Heretofore described deodorant is with Na2CO3It is the alkaline solution of main body, its Na2CO3Mass percent concentration
It is 10-15%, primarily serves the effect of buffering, while the phase transfer catalyst comprising 1-5 ‰, 1-10% desulfurizing agents A and deodorant
The activator of B, 5-10 ‰, wherein phase transfer catalyst can make hydrogen sulfide, organic sulfur compound（Mercaptan, thioether）Etc. being soluble in deodorant
In, increasing the speed of reaction, deodorant A is directed to hydrogen sulfide, can directly by H2S is oxidized to Na2SO4, Na2SO4The aqueous solution is nontoxic, nothing
Smelly, deodorant B is mainly for organic sulfur compound（Mercaptan, thioether）, organic sulfur main oxidation can be made into sodium sulfonate, it is dissolved in water and nothing
Smelly, the content of deodorant A and deodorant B can be adjusted according to foul gas composition, generally 1-10%, and activator can
Different amounts are added for different deodorants, accelerates reaction, odor pollutant is transformed into the nontoxic material of odorless.Additionally, also
Anti-icing fluid, defoamer etc. can be added according to requirements, or to the gas of different components, adjust the formula of deodorant, so that
More efficiently, energy-conservation, economic improvement gases containing stench sulphureous gases.
As shown in figure 1, being additionally provided with deodorant entrance 22 and outlet 23, the outlet 23 on the deodorant storage tank 2
Centrifugal pump is connected with by pipeline 8, deodorant entrance 22 is used for new without the deodorization for using to being put into deodorant storage tank 2
Agent, outlet 23 is used to discharge by after circulating repetition utilization and by the entirely ineffective deodorant of detection.It is de- by detection
The content of the active ingredient in deodorization agent solution after being recycled in smelly dose of storage tank 2 judges whether deodorant is entirely ineffective, passes through
Cross and detect that outlet 23 of the entirely ineffective deodorant directly from deodorant storage tank 2 is discharged.
（3）Foam removal and discharge：By above-mentioned steps（1）After gas after middle oxidation is discharged from absorption tower 1, then by foam removal point
From device 5 isolate drop therein and foam after by blower fan 6 be delivered to chimney 7 discharge.Meanwhile, defoaming separator 5 is separated
The drop and foam for going out are delivered in deodorant storage tank 2 and are reused as deodorant.
The deodorant storage tank 2 is provided with and connected with absorption tower 1 to carry out the pressure relief pipe 24 of pressure release to its inside, described
Pipeline 8 between pressure relief pipe 24 and connection absorption tower 1 and defoaming separator 5 is connected, and pressure relief pipe 24 is used to discharge deodorization
Pressure on agent storage tank 2 and branch road, prevents hypertonia in deodorant storage tank 2, influences the implementation of whole sweetening process.The deodorization
The bottom of agent storage tank 2 is additionally provided with mouth 25 of listing and indexing, and mouth 25 of listing and indexing is used for de- by what is deposited in it in time when deodorant storage tank 2 is checked
Smelly dose emits, to carry out normal maintenance activity.
The technical program can not only reduce the use cost of user, and the oxidation of deodorant and regenerative response is organic
It is combined together, effectively extends the service life of deodorant；The wet desulfurizing process technological process that the present invention is provided is simple, behaviour
Make easy, desulfurized effect is good, exploitativeness is strong, while energy saving, use cost is low.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, on the premise of the technology of the present invention principle is not departed from, some improvement and modification can also be made, above-mentioned hypothesis these
Improve and modification also should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of wet desulfurizing process of sulphur-containing exhaust gas, it is characterised in that comprise the following steps：
(1) oxidation reaction of sulphur-containing exhaust gas：Sulphur-containing exhaust gas are introduced in absorption tower, sulfur-bearing is made using spray mode in absorption tower
Waste gas is fully contacted with deodorization agent solution makes hydrogen sulfide and/or organic sulfur compound in sulphur-containing exhaust gas make in catalyst with deodorant
With it is lower generation oxidation reaction generate sodium salt and/or sodium sulfonate, the deodorization agent solution be containing phase transfer catalyst, activator and
With Na2CO3It is the alkaline solution of main body, its oxidation equation formula is：
(2) recycling utilization of deodorant：To there is the deodorization agent solution that fails after oxidation reaction from absorption with sulphur-containing exhaust gas
It is delivered in deodorant storage tank after tower discharge, is then delivered in jet pump in the presence of centrifugal pump, jet pump is with deodorant
Solution is medium, produces suction suction air, make oxygen in active ingredient in deodorant and air deodorant itself into
It is fully contacted in the presence of point activator and mixes and carry out oxygen carrying regenerative response, the deodorization agent solution after regeneration is again introduced into deodorization
It is transported in agent storage tank and in the presence of centrifugal pump in absorption tower with spray mode and sulphur-containing exhaust gas secondary response again, it is described de-
Smelly dose of repetitive cycling is carried out by sulphur-containing exhaust gas utilization-regeneration-recycling process, until its can not regenerate it is entirely ineffective after from deodorization
Discharge in agent storage tank；
(3) foam removal and discharge：By above-mentioned steps（1）After gas after middle oxidation is discharged from absorption tower, then by defoaming separator
Chimney discharge is delivered to by blower fan after isolating drop therein and foam.
2. the wet desulfurizing process of a kind of sulphur-containing exhaust gas according to claim 1, it is characterised in that：The deodorization agent solution
It is with Na2CO3It is the alkaline solution of main body, its Na2CO3Mass percent concentration be 10-15%, phase transfer catalyst quality hundred
Divide specific concentration for 1-5 ‰, desulfurizing agent mass percent concentration are 1-10% and activator mass percent concentration is 5-10 ‰.
3. the wet desulfurizing process of a kind of sulphur-containing exhaust gas according to claim 1 and 2, it is characterised in that：The step（3）
The middle drop for isolating defoaming separator and foam are delivered in deodorant storage tank and are reused as deodorant.
4. the wet desulfurizing process of a kind of sulphur-containing exhaust gas according to claim 1, it is characterised in that：The deodorant storage tank
It is provided with and connected with absorption tower to carry out its inside the pressure relief pipe of pressure release.
5. the wet desulfurizing process of a kind of sulphur-containing exhaust gas according to claim 1, it is characterised in that：The step（2）In
Judge whether deodorant is complete by the content for detecting the active ingredient in the deodorization agent solution after being recycled in deodorant storage tank
Full failure.
6. the wet desulfurizing process of a kind of sulphur-containing exhaust gas according to claim 5, it is characterised in that：The step（2）In
By detecting that entirely ineffective deodorant is directly discharged by the outlet on deodorant storage tank.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4830838A (en) * | 1988-11-01 | 1989-05-16 | The Dow Chemical Company | Removal of hydrogen sulfide from fluid streams with minimum production of solids |
| CN1040513A (en) * | 1988-08-30 | 1990-03-21 | 武汉化工原料厂 | The sulfur method of material synthesis gas during oxalic acid is produced |
| US5207927A (en) * | 1992-03-18 | 1993-05-04 | Uop | Treatment of an aqueous stream containing water-soluble inorganic sulfide compounds |
| CN1086308C (en) * | 1996-04-03 | 2002-06-19 | 罗狄亚化学公司 | Direct oxidation method for converting sulphur compounds into sulphur with a copper catalyst |
| CN102188888A (en) * | 2011-04-12 | 2011-09-21 | 王晓晔 | A wet method treatment process of purified flue gas with a water collection function in the process and a processing apparatus thereof |
| CN103443355A (en) * | 2011-02-03 | 2013-12-11 | 斯塔诺阿埃索澳吉有限公司 | Method of making purified methanol from a liquefied fraction obtained from a sulfate pulp process |
-
2017
- 2017-03-20 CN CN201710164576.5A patent/CN106861385A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040513A (en) * | 1988-08-30 | 1990-03-21 | 武汉化工原料厂 | The sulfur method of material synthesis gas during oxalic acid is produced |
| US4830838A (en) * | 1988-11-01 | 1989-05-16 | The Dow Chemical Company | Removal of hydrogen sulfide from fluid streams with minimum production of solids |
| US5207927A (en) * | 1992-03-18 | 1993-05-04 | Uop | Treatment of an aqueous stream containing water-soluble inorganic sulfide compounds |
| EP0623554A1 (en) * | 1992-03-18 | 1994-11-09 | Uop | Treatment of an aqueous stream containing water-soluble inorganic sulfide compounds to selectively produce the corresponding sulfate |
| CN1086308C (en) * | 1996-04-03 | 2002-06-19 | 罗狄亚化学公司 | Direct oxidation method for converting sulphur compounds into sulphur with a copper catalyst |
| CN103443355A (en) * | 2011-02-03 | 2013-12-11 | 斯塔诺阿埃索澳吉有限公司 | Method of making purified methanol from a liquefied fraction obtained from a sulfate pulp process |
| CN102188888A (en) * | 2011-04-12 | 2011-09-21 | 王晓晔 | A wet method treatment process of purified flue gas with a water collection function in the process and a processing apparatus thereof |
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Application publication date: 20170620 |