CN106914120A - A kind of method for removing hydrogen sulfide gas - Google Patents
A kind of method for removing hydrogen sulfide gas Download PDFInfo
- Publication number
- CN106914120A CN106914120A CN201710232852.7A CN201710232852A CN106914120A CN 106914120 A CN106914120 A CN 106914120A CN 201710232852 A CN201710232852 A CN 201710232852A CN 106914120 A CN106914120 A CN 106914120A
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- Prior art keywords
- alkali metal
- hydrogen sulfide
- mixed solution
- removing hydrogen
- hypochlorite
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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
- B01D53/79—Injecting reactants
-
- 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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
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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
- B01D2251/604—Hydroxides
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- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of method for removing hydrogen sulfide, comprise the following steps:S10 prepares alkali metal base and alkali metal hypochlorite's mixed solution, by pipeline to hydrogen sulfide scrubber tower in, and sprayed by the flusher on pipeline；Be passed through gas in hydrogen sulfide scrubber tower by S20, and the gas reacts in hydrogen sulfide scrubber tower with mixed solution；S30 purified gases are discharged by air pump by hydrogen sulfide scrubber top of tower, after solution imports waste liquid tank, sulfate are separated with the alkali metal base and alkali metal hypochlorite by filter；Wherein, the alkali metal is sodium or potassium.The mixed solution is preferably obtained by the aqueous solution of the electrolyzing alkali metal villaumite in electrodialysis film generator.Alkali metal base and the mol ratio of the hypochlorite corresponding to the alkali metal are 1 in the mixed solution：1~5:1.Compared with prior art, the present invention has that desulfurized effect is good, desulfurizing agent is easily separated, the advantage such as convenient and practical, economic and environment-friendly.
Description
Technical field
The present invention relates to environmental technology field, and in particular to a kind of method of removing hydrogen sulfide gas.
Background technology
Production pyrolysis combustion gas, such as Flammable gas that natural gas and gas are produced from anaerobic digester system, generally comprises
Substantial amounts of hydrogen sulfide gas, such gas is typically to be not suitable for what is sold or distributed by pipeline.If additionally, without treatment
The gas containing hydrogen sulfide is directly used as fuel, then can cause to contain substantial amounts of sulfur dioxide etc. in the gas discharged after burning
Sulfur-containing oxide, greatly infringement is caused to environment.Therefore, to meet commercial gas supplier required product requirement and environmentally friendly need
Ask, it is necessary to first remove hydrogen sulfide.
At present, it is industrial for the method that removing hydrogen sulfide is generally used includes：1）Use the material such as dry zeolite or iron sponge
Removal is absorbed, this regeneration method after molecule is screened is not only cheap but also easy in theory, but reality but often people not to the utmost
Meaning；2）Removing is cleaned from combustion gas with liquid, the generally aqueous solution using amine, potassium carbonate or the like as fluent material, but this
The method of kind is primarily adapted for use in containing the gas stream in great amount of carbon dioxide and holding saturation aqueous vapor, can by the way that hydrogen sulfide is converted into
A large amount of materials for being dissolved in water, and then removing is peeled off from liquid solution, range of application is extremely limited；3）The most commonly used method
It is to use di-iron trioxide, such as wood shavings, clay inert solid branch will be added in graininess or powdered di-iron trioxide
Thing is held, the method has the advantages of desulfurization is accurate, and desulfurized effect is good, but there is di-iron trioxide removal difficulty and equipment complexity
The problems such as.
Chinese invention patent application CN104726140A discloses a kind of iron oxide sulfur method and equipment, the patent application
Employed in sulfur method include：Desulfurizing agent and strong acid weak base salting liquid are mixed to form complex iron oxide desulfurizing agent, with Jiao
Inversely contact carries out desulfurization to producer gas, and desulfurizing agent therein is the one kind or two in brown iron oxide and hydrated ferric oxide desulfurizing agent
Kind.The method has the features such as desulfurized effect is good, desulfurizer activity is high, and the method also to the complex iron oxide desulfurization after desulfurization
Agent is regenerated, to improve the value of desulfurizing agent.But regeneration after desulfurizing agent performance necessarily can continuous decrease, therefore
Though the patent has postponed the removal time of desulfurizing agent, desulfurizing agent is not solved still and is difficult to removed problem.
The content of the invention
For above technological deficiency, present invention aim at a kind of method for removing hydrogen sulfide is provided, be particularly suited for from
Hydrogen sulfide is removed in pyrolysis alkene gas, the method has that desulfurized effect is good, occupation area of equipment is small, desulfurizing agent is easily removed, operate letter
Just, the advantages of high financial profit.
The present invention is achieved through the following technical solutions：
A kind of method for removing hydrogen sulfide, comprises the following steps:
S10 prepares alkali metal base and alkali metal hypochlorite's mixed solution, by pipeline to hydrogen sulfide scrubber tower in,
And sprayed by the flusher on pipeline；
Be passed through gas in hydrogen sulfide scrubber tower by S20, and the gas reacts in hydrogen sulfide scrubber tower with mixed solution；
S30 purified gases are discharged by air pump by hydrogen sulfide scrubber top of tower, after solution imports waste liquid tank, by filtering
Device separates sulfate with the alkali metal base and alkali metal hypochlorite；
Wherein, the alkali metal is sodium or potassium.
Further, the preparation method of the mixed solution includes following three kinds：
1）The aqueous solution of electrolyzing alkali metal villaumite；
2）Directly chlorine is passed through in alkali metal base and is prepared；
3）Alkali metal base and alkali metal hypochlorite's solid are directly added into water and are dissolved.
Preferably, the mixed solution is obtained by the aqueous solution of electrolyzing alkali metal villaumite water.
Further, the aqueous solution system that the mixed solution passes through the electrolyzing alkali metal villaumite in electrodialysis film generator
.
Further, sulfate is separated out by crystallizing in the step S30, used as industrial chemicals.
Further, alkali metal base and the mol ratio of the hypochlorite corresponding to the alkali metal are 1 in the mixed solution：
1~5:1, preferably 1:1~2:1.
Further, the pH value of the mixed solution is more than 9.
Preferably, the alkali metal is potassium, and the mixed solution pH value is 9~12.
Preferably, the alkali metal is sodium, and the mixed solution pH value is more than 12.
Further, the flusher on the pipeline includes sprayer or nozzle.
Compared with prior art, the present invention has advantages below：
This programme good absorbing effect, equipment is simple to operation, and desulfurizing agent is can be prepared by by raw material of sodium chloride, with low cost, side
Case applicability is wide, is applicable to hydrogen sulfide containing various combustion gas and other gases；Time chlorine is prepared by electrolytic chlorination saline solution
Hydrochlorate and alkali mixed solution, it is with low cost；The sulfate that reaction is obtained can be used as industrial chemicals, particularly with KOH and KClO
During for absorbent, the K for obtaining2SO4Can be used as potash fertilizer, the significant increase economic worth of byproduct, while economic and environment-friendly；Gas
The desulfurizing agent washing removing of device ejection is sprayed, desulfurizing agent is simply easily separated, easily removes.
Brief description of the drawings
Fig. 1 is the electrolysis unit schematic diagram of the embodiment of the present invention 1 and 2；
Fig. 2 is the desulfurizer schematic diagram of the embodiment of the present invention 1 and 2.
Description of reference numerals：1st, raw material tank；2nd, electrodialysis film generator；3rd, mixing channel；4th, hydrogen sulfide scrubber tower；5th, spray
Mouth；6th, sprayer；7th, mouth is entered；8th, air pump；9th, outlet；10th, waste liquid tank.
Specific embodiment
The present invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
A kind of method for removing hydrogen sulfide, comprises the following steps:
S10 prepares alkali metal base and alkali metal hypochlorite's mixed solution, by pipeline to hydrogen sulfide scrubber tower in,
And sprayed by the flusher on pipeline；
Be passed through gas in hydrogen sulfide scrubber tower by S20, and the gas reacts in hydrogen sulfide scrubber tower with mixed solution；
S30 purified gases are discharged by air pump by hydrogen sulfide scrubber top of tower, after solution imports waste liquid tank, by filtering
Device separates sulfate with the alkali metal base and alkali metal hypochlorite, and the sulfate for obtaining can be used as industrial chemicals；
Wherein, the alkali metal is sodium or potassium.
The preparation method of the mixed solution includes following three kinds：
1）The aqueous solution of electrolyzing alkali metal villaumite；
2）Directly chlorine is passed through in alkali metal base and is prepared；
3）Alkali metal base and alkali metal hypochlorite's solid are directly added into water and are dissolved.
It is preferred that being obtained using the aqueous solution of electrolyzing alkali metal villaumite water.
The mixed solution is obtained by the aqueous solution of the electrolyzing alkali metal villaumite in electrodialysis film generator.
Alkali metal base and the mol ratio of the hypochlorite corresponding to the alkali metal are 1 in the mixed solution：1~5:1, it is excellent
Elect 1 as:1~2:1.The pH value of the mixed solution is more than 9, and when the alkali metal is potassium, the mixed solution pH value is preferably 9
~12；When the alkali metal is sodium, the mixed solution pH value is more than 12.
Flusher on the pipeline includes sprayer or nozzle.
Embodiment 1：
As shown in figure 1,1 is obtained after barrel-shaped dialysis membrane generator 2 is by the salt water electrolysis in raw material tank 1：1 NaOH with
It is 13 that pH value is adjusted after NaClO mixed solutions, and the mixed liquor is transferred in mixing channel 3 by pipeline.As shown in Fig. 2 passing through
Pump and pipeline by the column plates at different levels lower section of the NaOH/NaClO solution feeding hydrogen sulfide scrubber tower 4 in mixing channel 3, and from nozzle 5
Sprayed with sprayer 6.Combustion gas enters hydrogen sulfide scrubber tower 4, hydrogen sulfide and NaOH/ during diffusing up from mouth 7 is entered
NaClO is reacted, and reacted liquid is imported in waste liquid tank 10.Remaining clean gas are discharged by air pump 8 by outlet 9, and
Liquid in waste liquid tank 10 is separated sodium sulphate with NaOH/NaClO by filtering, the recyclable recycling of sodium sulphate, and
NaOH/NaClO then reusable edibles.
Embodiment 2：
As shown in figure 1, being obtained 1 after be electrolysed for the potassium chloride solution in raw material tank 1 by barrel-shaped dialysis membrane generator 2：1
It is 10 that pH value is adjusted after KOH and KClO mixed solutions, and the mixed liquor is transferred in mixing channel 3 by pipeline.As shown in Fig. 2
KOH/KClO solution in mixing channel 3 sent into the column plates at different levels lower section of hydrogen sulfide scrubber tower 4 by pump and pipeline, and from nozzle
5 and sprayer 6 in spray.Combustion gas enters hydrogen sulfide scrubber tower 4, hydrogen sulfide and KOH/ during diffusing up from mouth 7 is entered
KClO is reacted, and reacted liquid is imported in waste liquid tank 10.Remaining clean gas are discharged by air pump 8 by outlet 9, and are given up
Liquid in liquid bath 10 is separated potassium sulfate with KOH/KClO by filtering, the recyclable recycling of potassium sulfate, and KOH/
KClO then reusable edibles.
Compared with prior art, the present invention has that desulfurized effect is good, desulfurizing agent is easily separated, convenient and practical, economic and environment-friendly etc.
Advantage.
Above is having carried out exemplary description to the present invention, it is clear that realization of the invention is not limited by aforesaid way
System, if the various improvement that technical solution of the present invention is carried out are employed, or it is not improved by design of the invention and technical scheme
Other occasions are directly applied to, within the scope of the present invention.
Claims (10)
1. it is a kind of remove hydrogen sulfide method, it is characterised in that：Comprise the following steps:
S10 prepares alkali metal base and alkali metal hypochlorite's mixed solution, by pipeline to hydrogen sulfide scrubber tower in,
And sprayed by the flusher on pipeline；
Be passed through gas in hydrogen sulfide scrubber tower by S20, and the gas reacts in hydrogen sulfide scrubber tower with mixed solution；
S30 purified gases are discharged by air pump by hydrogen sulfide scrubber top of tower, after solution imports waste liquid tank, by filtering
Device separates sulfate with the alkali metal base and alkali metal hypochlorite；
Wherein, the alkali metal is sodium or potassium.
2. it is according to claim 1 removing hydrogen sulfide method, it is characterised in that：Take off the preparation method of the mixed solution
Including following three kinds：
1）The aqueous solution of electrolyzing alkali metal villaumite；
2）Directly chlorine is passed through in alkali metal base and is prepared；
3）Alkali metal base and alkali metal hypochlorite's solid are directly added into water and are dissolved.
3. it is according to claim 1 removing hydrogen sulfide method, it is characterised in that：The mixed solution is by electrolytic alkali gold
The aqueous solution for belonging to villaumite water is obtained.
4. it is according to claim 1 removing hydrogen sulfide method, it is characterised in that：The mixed solution is by electrodialysis
The aqueous solution of electrolyzing alkali metal villaumite is obtained in film generator.
5. it is according to claim 1 removing hydrogen sulfide method, it is characterised in that：In the mixed solution alkali metal base and
The mol ratio of the hypochlorite corresponding to the alkali metal is 1：1~5:1.
6. it is according to claim 1 removing hydrogen sulfide method, it is characterised in that：In the mixed solution alkali metal base and
The mol ratio of the hypochlorite corresponding to the alkali metal is 1:1~2:1.
7. according to any one of claim 1~6 removing hydrogen sulfide method, it is characterised in that：The mixed solution
PH value is more than 9.
8. according to any one of claim 1~6 removing hydrogen sulfide method, it is characterised in that：The alkali metal is potassium,
The mixed solution pH value is 9~12.
9. according to any one of claim 1~6 removing hydrogen sulfide method, it is characterised in that：The alkali metal is sodium,
The mixed solution pH value is more than 12.
10. according to any one of claim 1~6 removing hydrogen sulfide method, it is characterised in that：Spray on the pipeline
Spilling device includes sprayer or nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710232852.7A CN106914120A (en) | 2017-04-11 | 2017-04-11 | A kind of method for removing hydrogen sulfide gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710232852.7A CN106914120A (en) | 2017-04-11 | 2017-04-11 | A kind of method for removing hydrogen sulfide gas |
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| Publication Number | Publication Date |
|---|---|
| CN106914120A true CN106914120A (en) | 2017-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710232852.7A Pending CN106914120A (en) | 2017-04-11 | 2017-04-11 | A kind of method for removing hydrogen sulfide gas |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103846003A (en) * | 2012-11-30 | 2014-06-11 | 中国石油天然气股份有限公司 | Method for removing hydrogen sulfide gas |
| CN106398790A (en) * | 2016-06-23 | 2017-02-15 | 西南石油大学 | A hydrogen sulfide removing device and method for natural gas |
-
2017
- 2017-04-11 CN CN201710232852.7A patent/CN106914120A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103846003A (en) * | 2012-11-30 | 2014-06-11 | 中国石油天然气股份有限公司 | Method for removing hydrogen sulfide gas |
| CN106398790A (en) * | 2016-06-23 | 2017-02-15 | 西南石油大学 | A hydrogen sulfide removing device and method for natural gas |
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Application publication date: 20170704 |