CN103657395A - System and method for reducing hydrogen sulfide in gas - Google Patents
System and method for reducing hydrogen sulfide in gas Download PDFInfo
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- CN103657395A CN103657395A CN201210495244.2A CN201210495244A CN103657395A CN 103657395 A CN103657395 A CN 103657395A CN 201210495244 A CN201210495244 A CN 201210495244A CN 103657395 A CN103657395 A CN 103657395A
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Images
Classifications
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to a system and a method for reducing hydrogen sulfide in gas, wherein the system comprises: a biological filtration unit that receives a gas comprising hydrogen sulfide, and converts the hydrogen sulfide in the gas to produce a product; a circulating water storage unit that receives the product from the biological filtration unit and forms a liquid containing the product; and a circulating water regeneration unit which receives the liquid from the circulating water storage unit, performs a water purification reaction, and removes the product; wherein the product is an acidic water-soluble product, and the water generated from the circulating water regeneration unit enters the circulating water storage unit.
Description
Technical field
The invention relates to a kind of System and method for that reduces hydrogen sulfide in gas, especially a kind of System and method for that reduces hydrogen sulfide and remove water-soluble sulfate radical and oxysulfide.
Background technology
Biogas, natural gas belong to a kind of cheap and renewable sources of energy favourable to environment, can be used as the generation of heat energy, electric power, chemicals or the application of vehicle energy.Yet, energy industry (produce biogas and natural gas), paper-making industry, environmental protection industry, with the technique such as petrochemical refining in, capital produces hydrogen sulfide, when hydrogen sulfide cumulative concentration is above up to 1,000ppm, can cause to facility (as generator etc.) corrosion of seriousness, also can cause fatefulue injury to human body, therefore, in related process, need to reduce as much as possible the content of hydrogen sulfide, just can reach the safety utilization of economy again.
Being usually used at present removing hydrogen sulfide method is: WATER-WASHING METHOD, absorption method and bioanalysis.The water consumption of WATER-WASHING METHOD is large, and if the water spraying cannot on average touch biogas, can cause the removal efficiency of hydrogen sulfide poor.Absorption method is to utilize the materials such as activated carbon or iron oxide with adsorption of hydrogen sulfide, yet its treatment effeciency can be because selecting different material to change, cause the frequency of changing activated carbon or iron oxide to be difficult to certain grasp, and more need carry out reclaiming or process adsorbent via professional treatment factory, generally speaking operating cost be higher.Bioanalysis is lower-cost sulfur method wherein, convert hydrogen sulfide to sulphur precipitation or oxysulfide, yet, a large amount of sludge settling things containing solid-state element sulphur easily cause the problems such as pipeline obstruction and short stream, and then make the treatment effeciency variation of hydrogen sulfide, cause system unstable, need to carry out backwash to remove sediment.
Therefore, if can find a kind of system that can reduce hydrogen sulfide, also can effectively remove the sulphur precipitations such as water-soluble sulfate radical, oxysulfide, even if be used in the hydrogen sulfide of processing high concentration, still can maintain good hydrogen sulfide treatment efficiency, reduce high-concentration hydrogen sulfide environment or generator caused to corrosivity injury, be conducive to energy industry (producing biogas and natural gas), paper-making industry, environmental protection industry, with the development of the industry such as petrochemical refining.
Summary of the invention
Main purpose of the present invention is to be to provide a kind of System and method for that reduces hydrogen sulfide in gas, reducing hydrogen sulfide, can not produce sulphur and precipitate and remove water-soluble sulfate radical and oxysulfide.
For reaching above-mentioned purpose, the invention provides a kind of system that reduces hydrogen sulfide in gas, comprising: a biological filter element, it receives a gas, this gas comprises hydrogen sulfide, and the hydrogen sulfide in this this gas of biofiltration cell translation is to produce a water-soluble products; One recirculated water storage element, it receives this product from this biofiltration unit, and forms a liquid that comprises this product; And a circulating water regeneration unit, it receives this liquid from this recirculated water storage element, and this circulating water regeneration unit carries out desalt reaction, and removes this product; Wherein, this product is the water-soluble products of an acidity, and the water that this circulating water regeneration unit produces certainly enters this recirculated water storage element.
Whereby, the present invention separately provides a kind of method that reduces hydrogen sulfide in gas, comprising: a gas (A) is provided, and this gas comprises hydrogen sulfide; (B) use a biological filter element to filter this gas, to reduce the hydrogen sulfide in this gas, and produce a product; (C) make this product enter a recirculated water storage element, to form a liquid that comprises this product; And (D) make this liquid enter a circulating water regeneration unit, carry out desalt reaction and remove this product; Wherein, this product is the water-soluble products of an acidity.Therefore, can be by carrying out the method by the system of hydrogen sulfide in above-mentioned reduction gas.
Wherein, this biofiltration unit can be used the technology of any existing minimizing hydrogen sulfide, is preferably and comprises: a thalline immobilization sub-cell, it comprises a carrier and set sulfur oxidizing bacterium thereon.This carrier (Support) can be at least one choosing freely: the group that activated carbon, peat soil, compost, bark, vermiculite, oyster shell, zeolite, medical stone, iron hydroxide, activated bauxite, nacrite, letterwood, Poly Foam and artificial synthetic chemical substance form.Wherein artificial synthetic chemical substance can be high molecular polymer, such as polyethylene foam, Poly Foam etc.; This monomeric species can be selected for immobilized step, and is placed in the interior purposes as purifying of appropriate containers.
There is no particular restriction for the kind of this sulfur oxidizing bacterium, only need to possess the ability that transforms hydrogen sulfide, for example: Acidothiobacillus ferrooxidans, Acidothiobacillus thiooxidans, Thiobacillus denitrifcans, Thermus sp. and Thiobacillus sp..In addition, this sulfur oxidizing bacterium also can form coated this carrier of a biomembrane, or forms biomembrane along surface configuration, the internal void of this carrier.Whereby, this biofiltration unit can change hydrogen sulfide into the materials such as water-soluble sulfate radical or oxysulfide, reduces element sulphur and generates, and is difficult for producing precipitation.
In addition, this biofiltration unit can filter sub-cell by one or more and be formed, and a plurality of these filtration sub-cells can serial or parallel connection mode connect; But the present invention is not confined to this, this filters quantity and the connected mode of sub-cell, all the required device usefulness of visual reality and the sub-cell characteristic used and adjusted.
In addition, this recirculated water storage element can be used any existing method to monitor, for example use a soda acid detecting instrument monitoring, in this recirculated water storage element, during the acid-base value of liquid (pH value) too low (being preferably lower than 4.0), allow this liquid enter this circulating water regeneration device, to carry out desalt reaction; Yet the setting of this thresholding can be adjusted according to the required application of reality.Therefore, this supervising device can guarantee that the liquid in this recirculated water storage element is recycling water resource.
In addition, a filling material of this circulating water regeneration unit is unrestricted, can be at least one choosing freely: the group that activated carbon, ion exchange resin or lime form, to adsorb this water-soluble products, then scavenger precipitation thing is to reuse.And this circulating water regeneration unit can be an electrochemical appliance or carries out acid-base neutralization reaction by prior aries such as ion exchange resin, the water producing enters this recirculated water storage unit stores again, usings reusing as water.Whereby, water-soluble sulfate radical and the oxysulfide of accumulation, via absorption or the removal of circulating water regeneration unit, significantly to reduce the waste of water resource.
In reduction gas of the present invention, in the system of hydrogen sulfide, can also comprise: a dust-filtering unit, it is connected with this biofiltration unit, to filter this gas of waiting to enter this biofiltration unit.
In reduction gas of the present invention, in the system of hydrogen sulfide, can also comprise: a bio-aerosols filter element, it is connected with this biofiltration unit, to filter this gas from this biofiltration unit.
One of this above-mentioned dust-filtering unit and this bio-aerosols filter element filled material and be can be at least one choosing freely: the group that peat soil, bark, vermiculite, oyster shell, zeolite, medical stone, activated carbon, iron hydroxide, activated bauxite, nacrite and letterwood form; But the present invention is this limit no longer also.Whereby, this above-mentioned dust-filtering unit and this bio-aerosols filter element can effectively be removed most of dust and the bio-aerosols in this gas (as biogas, natural gas), significantly to reduce reactor pressurized, undermine obstruction.
In reduction gas of the present invention, in the system of hydrogen sulfide, can also comprise: a liquid filter element, it is arranged between this recirculated water storage element and this circulating water regeneration unit, to filter the water from this circulating water regeneration unit.
In reduction gas of the present invention, in the System and method for of hydrogen sulfide, this gas can be hydrogen sulfide containing biogas or natural gas, but the present invention is not limited to this.In other words, in reduction gas of the present invention, the System and method for of hydrogen sulfide can be used for any gas that includes hydrogen sulfide of purifying.
Accordingly, the System and method for by hydrogen sulfide in reduction gas of the present invention, can effectively promote hydrogen sulfide removal efficiency, the equipment of attenuating purifying biogas and operation, maintenance cost.The hydrogen sulfide gas that contains high concentration in processing (> 1000ppm), can avoid facility or generator corrosion, and prevents that hydrogen sulfide from causing mortality injury to human body.And, in reduction gas of the present invention, the System and method for of hydrogen sulfide is by converting hydrogen sulfide to water-soluble products, be difficult for producing sulphur precipitation, remover stops up and crushing, and utilizes the relevant materials such as adsorbable sulfuric acid or oxysulfide, makes water circulation reproducible utilization, and then stability and the efficiency of lifting hydrogen sulfide removal, the treatment efficiency that significantly promotes prior art reaches more than 3 times, and oxysulfide is removed and recycle-water, really reduces water resource and expends.
Accompanying drawing explanation
Figure 1A to 1C reduces the system schematic of hydrogen sulfide in gas in embodiments of the invention 1.
Fig. 2 is the variation diagram that in embodiments of the invention 2, concentration of hydrogen sulfide and hydrogen sulfide remove efficiency, and its orbicular spot represents hydrogen sulfide influent stream concentration, and square point represents that hydrogen sulfide goes out to flow concentration, and triangulation point represents that hydrogen sulfide removes efficiency.
Fig. 3 is the graph of a relation of hydrogen sulfide input quantity and hydrogen sulfide elimination ability in embodiments of the invention 2.
[main element symbol description]
1- bacteria bed 11,12,13-filters sub-cell
2-recirculated water accumulator tank 3-circulating water regeneration device
4-dust filtering device 5-bio-aerosols filter
6-sedimeter 7-extraction fan
The 9-recycled water pumping of 8-liquid backflow water pump Pu
The specific embodiment
By particular specific embodiment, embodiments of the present invention are described below, those skilled in the art can understand other advantages of the present invention and effect easily by content disclosed in the present specification.The present invention also can be implemented or be applied by other different specific embodiments, and the every details in this description also can be based on different viewpoints and application, carries out various modifications and change not deviating under spirit of the present invention.
In embodiments of the invention, these accompanying drawings are the schematic diagram of simplification.Just these diagrams only show the elements relevant with the present invention, the form that its shown element is non-while be actual enforcement, and component number, shape equal proportion during its actual enforcement is one optionally to design, and its component placement kenel may be more complicated.
Please refer to Figure 1A, it is the system schematic of hydrogen sulfide in reduction gas of the present invention.This system comprises: bacteria bed 1, recirculated water accumulator tank 2, circulating water regeneration device 3, dust filtering device 4, bio-aerosols filter 5, sedimeter 6, its periphery mainly comprises: extraction fan 7, liquid backflow water pump Pu 8 and recycled water pumping 9.
Whereby, by this system, the biogas that wish is processed enters this system by dust filtering device 4, via extraction fan 7, biogas is introduced to bacteria bed 1; At this, bacteria bed 1 generates water-soluble sulfate radical or other water-soluble oxysulfides by sulfur oxidizing bacterium (Pseudomonas Putida is called for short T1, Thiobacillus sp. and is called for short T2 and Thermus sp. abbreviation A1) by hydrogen sulfide catalysis.Then, the biogas after removal hydrogen sulfide pushes to the top of bacteria bed 1, by pipeline, is connected to bio-aerosols filter 5, and the biogas of processing can be applicable to combustion power generation use.In addition, the water-soluble sulfate radical of above-mentioned generation and other water-soluble oxysulfides will be dissolved in recirculated water accumulator tank 2, through sedimeter 6, enter circulating water regeneration device 3; At this, water-soluble sulfate radical is adsorbed and carry out desalt,, by the antacid water-soluble products of alkali lye, to reach the object of reusing water resource, and the salt compounds producing can discharge.In recirculated water accumulator tank 2, use a soda acid detecting instrument to monitor this recirculated water, when the acid-base value (pH value) of recirculated water is lower than 4.0 time, allow this recirculated water enter again this circulating water regeneration device.Wherein, this circulating water regeneration device is filled material and be can be the materials such as adsorbable oxysulfide such as ion exchange resin, activated carbon or lime.
Select the hydrogen sulfide transfer capability of sulfur oxidizing bacterium test not of the same race system of the present invention, show that its element sulphur approximately only accounts for 6%～13%, the conversion usefulness that tool is good, the solid-state element sulphur that wherein A1 bacterial strain produces only accounts for 6%, all the other in 94% major part be water-soluble sulfate radical, accordingly, system of the present invention has and is difficult for blocking and the advantage such as regeneration efficiency height because of sulphur precipitation, and this result is as shown in table 1 below.
Table 1
In addition, in reduction gas of the present invention, the system of hydrogen sulfide also can have other forms of implementation, for example: as shown in Figure 1B and 1C, filtration time 11,12,13 of the units that bacteria bed 1 can be changed to via serial or parallel connection form; Yet the present invention is not confined to this.
System with the embodiment of 600 liters 1, through 200 days Long-term analysis hydrogen sulfide in methane clearances, its result as shown in Figure 2, Fig. 2 is the variation diagram that concentration of hydrogen sulfide and hydrogen sulfide remove efficiency, its orbicular spot represents hydrogen sulfide influent stream concentration, square point represents that hydrogen sulfide goes out to flow concentration, and triangulation point represents that hydrogen sulfide removes efficiency; RT represents the holdup time of biogas in system.Result shows: the average influent stream concentration of hydrogen sulfide is 5.8g/m
3(4150ppm), its average removal rate can be up to 95% in the time of 3～6 minutes the holdup time of biogas in system.
In addition, Fig. 3 is the graph of a relation of hydrogen sulfide input quantity and hydrogen sulfide elimination ability.As shown in Figure 3: when hydrogen sulfide influent stream concentration is lower than 80g/m
3during/h, can reach 90～100% clearances, the bioreactor of every cubic metre per hour can be removed the hydrogen sulfide up to approximately 80 grams, shows splendid clearance.
In simple terms, the System and method for of hydrogen sulfide in reduction gas of the present invention, can accumulate as easy as rolling off a log carrying out along with technique in the related industry techniques such as petrochemical refining, energy industry (producing biogas and natural gas) and paper-making industry of the hydrogen sulfide gas that produces high concentration, reach the stable effect that reduces hydrogen sulfide.Even if sulfuric acid increased and accumulates with the reaction time, impel environment pH value to decline, still can keep good hydrogen sulfide removal efficiency, therefore can avoid hydrogen sulfide to cause corrosiveness and human body is caused to fatefulue injury facility.
Above-described embodiment is only given an example for convenience of description, and the interest field that the present invention advocates should be as the criterion with described in claim certainly, but not only limits to above-described embodiment.
Claims (19)
1. a system that reduces hydrogen sulfide in gas, is characterized in that, comprising:
One biological filter element, it receives a gas, and this gas comprises hydrogen sulfide, and the hydrogen sulfide in this this gas of biofiltration cell translation is to produce a product;
One recirculated water storage element, it receives this product from this biofiltration unit, and forms a liquid that comprises this product; And
One circulating water regeneration unit, it receives this liquid from this recirculated water storage element, and this circulating water regeneration unit carries out desalt reaction, and removes this product;
Wherein, this product is the water-soluble products of an acidity, and the water that this circulating water regeneration unit produces certainly enters this recirculated water storage element; This biofiltration unit comprises: a thalline immobilization sub-cell, it comprises a carrier and set sulfur oxidizing bacterium thereon.
2. system according to claim 1, it is characterized in that, this carrier is at least one choosing freedom: the group that peat soil, compost, bark, vermiculite, oyster shell, zeolite, medical stone, activated carbon, iron hydroxide, activated bauxite, nacrite, letterwood, Poly Foam and artificial synthetic chemical substance form.
3. system according to claim 1, is characterized in that, this acid water-soluble products is sulfate radical or oxysulfide.
4. system according to claim 1, is characterized in that, this gas is a biogas.
5. system according to claim 1, is characterized in that, also comprises:
One dust-filtering unit, it is connected with this biofiltration unit, to filter this gas of waiting to enter this biofiltration unit.
6. system according to claim 1, is characterized in that, also comprises:
One bio-aerosols filter element, it is connected with this biofiltration unit, to filter this gas from this biofiltration unit.
7. system according to claim 1, is characterized in that, also comprises:
One liquid filter element, it is arranged between this recirculated water storage element and this circulating water regeneration unit, to filter the water from this circulating water regeneration unit.
8. system according to claim 1, is characterized in that, this biofiltration unit is formed by one or more filters sub-cell, and this filtration sub-cell connects in serial or parallel connection mode.
9. system according to claim 1, is characterized in that, material is filled at least one choosing freedom in one of this circulating water regeneration unit: the group that ion exchange resin, activated carbon or lime form.
10. system according to claim 1, is characterized in that, this circulating water regeneration unit is an electrochemical appliance.
11. systems according to claim 5, it is characterized in that, material is filled at least one choosing freedom in one of this dust-filtering unit: the group that peat soil, bark, vermiculite, oyster shell, zeolite, medical stone, activated carbon, iron hydroxide, activated bauxite, nacrite and letterwood form.
12. systems according to claim 6, it is characterized in that, one of this bio-aerosols filter element is filled material at least one choosing freedom: the group that peat soil, bark, vermiculite, oyster shell, zeolite, medical stone, activated carbon, iron hydroxide, activated bauxite, nacrite and letterwood form.
13. systems according to claim 1, is characterized in that, this recirculated water storage element is monitored with a soda acid detecting instrument.
14. 1 kinds of methods that reduce hydrogen sulfide in gas, is characterized in that, comprising:
A, provides a gas, and this gas comprises hydrogen sulfide;
B, is used a biological filter element to filter this gas, to reduce the hydrogen sulfide in this gas, and produces a product;
C, makes this product enter a recirculated water storage element, to form a liquid that comprises this product; And
D, makes this liquid enter a circulating water regeneration unit, carries out desalt reaction and removes this product;
Wherein, this product is the water-soluble products of an acidity; And in step B, this biofiltration unit by using one thalline immobilization sub-cell contacts with this gas, to reduce the hydrogen sulfide in this gas.
15. methods according to claim 14, is characterized in that, this thalline immobilization sub-cell comprises: a carrier and set sulfur oxidizing bacterium thereon.
16. methods according to claim 14, is characterized in that, after steps A, also comprise: a step a, is used a dust-filtering unit to filter this gas.
17. methods according to claim 14, is characterized in that, after step B, also comprise: a step b, is used a bio-aerosols filter element to filter this gas.
18. methods according to claim 14, is characterized in that, before step D, also comprise: a step c, is used a liquid filter element to filter this liquid.
19. methods according to claim 14, is characterized in that, this recirculated water storage element is monitored with a soda acid detecting instrument, and when the acidity-basicity ph value of this liquid is less than 6.0, this liquid enters this circulating water regeneration device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101134237 | 2012-09-19 | ||
| TW101134237A TWI478762B (en) | 2012-09-19 | 2012-09-19 | System and method for reducing h2s contained in gas |
Publications (1)
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| CN103657395A true CN103657395A (en) | 2014-03-26 |
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| CN201210495244.2A Pending CN103657395A (en) | 2012-09-19 | 2012-11-29 | System and method for reducing hydrogen sulfide in gas |
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| TW (1) | TWI478762B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103877851A (en) * | 2014-04-14 | 2014-06-25 | 青岛银河环保股份有限公司 | Sewage treatment plant deodorizing device with pH buffer function |
| CN110026080A (en) * | 2019-04-28 | 2019-07-19 | 广州广一大气治理工程有限公司 | A kind of combined system and technique of harmless treatment organic exhaust gas |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI701076B (en) * | 2018-02-27 | 2020-08-11 | 逢甲大學 | Biogas desulfurization system |
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| CN1039190A (en) * | 1987-10-19 | 1990-01-31 | 瓦格纳-比洛股份公司 | The microbial conversion process of sulphur containing harmful components in the waste gas |
| US5976868A (en) * | 1995-03-24 | 1999-11-02 | Paques Bio Systems B.V. | Process for the treatment of gases |
| CN1745883A (en) * | 2004-09-11 | 2006-03-15 | 中国石油化工股份有限公司 | Purification for stink and organic waste gas |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5879555A (en) * | 1997-02-21 | 1999-03-09 | Mockba Corporation | Electrochemical treatment of materials |
| TWI225425B (en) * | 2003-04-29 | 2004-12-21 | Univ Nat Chiao Tung | System and process for treating waste gas employing bio-treatment technology |
| TWM380831U (en) * | 2009-12-02 | 2010-05-21 | Shinesun Bio Energy Co Ltd | Methane processing equipment |
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2012
- 2012-09-19 TW TW101134237A patent/TWI478762B/en not_active IP Right Cessation
- 2012-11-29 CN CN201210495244.2A patent/CN103657395A/en active Pending
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| CN1039190A (en) * | 1987-10-19 | 1990-01-31 | 瓦格纳-比洛股份公司 | The microbial conversion process of sulphur containing harmful components in the waste gas |
| US5976868A (en) * | 1995-03-24 | 1999-11-02 | Paques Bio Systems B.V. | Process for the treatment of gases |
| CN1745883A (en) * | 2004-09-11 | 2006-03-15 | 中国石油化工股份有限公司 | Purification for stink and organic waste gas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103877851A (en) * | 2014-04-14 | 2014-06-25 | 青岛银河环保股份有限公司 | Sewage treatment plant deodorizing device with pH buffer function |
| CN110026080A (en) * | 2019-04-28 | 2019-07-19 | 广州广一大气治理工程有限公司 | A kind of combined system and technique of harmless treatment organic exhaust gas |
| CN110026080B (en) * | 2019-04-28 | 2023-12-19 | 广州广一大气治理工程有限公司 | Combined system and process for innocent treatment of organic waste gas |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201412381A (en) | 2014-04-01 |
| TWI478762B (en) | 2015-04-01 |
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