CN103013600A - Biogas desulfurization method in series of wet method with dry method - Google Patents
Biogas desulfurization method in series of wet method with dry method Download PDFInfo
- Publication number
- CN103013600A CN103013600A CN2012104672846A CN201210467284A CN103013600A CN 103013600 A CN103013600 A CN 103013600A CN 2012104672846 A CN2012104672846 A CN 2012104672846A CN 201210467284 A CN201210467284 A CN 201210467284A CN 103013600 A CN103013600 A CN 103013600A
- Authority
- CN
- China
- Prior art keywords
- biogas
- solution
- tower
- desulfurization
- dry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Gas Separation By Absorption (AREA)
- Industrial Gases (AREA)
Abstract
The invention discloses a biogas desulfurization method in series of a wet method with a dry method, which comprises the following steps: crude gas is boosted by a fan and enters a wet desulphurization tower after the temperature is lowered by a cooling tower; in the countercurrent contact process of crude gas and a desulfurization solution in the tower and a catalyst, most of impurities such as hydrogen sulfide are removed, and then the biogas is subjected to the dry desulfurization again after the moisture is separated through a dehydrating tower to further remove hydrogen sulfide so as to be lowered below 15 mg/Nm<3> to enter a biogas cabinet for use, and a rich fluid containing H2S is recycled in a regeneration tank. The method disclosed by the invention has the advantages of large treatment amount, stable treatment effect, high sulfur recovery rate, easily regenerated desulfurizer and long service life, and ensures that the hydrogen sulfide content of biogas meets the use requirements. The service life of the equipment pipeline in the biogas industrial application can be prolonged, the environmental problem of secondary pollution in use of biogas is eliminated, and a guarantee for further purifying and utilizing biogas is provided.
Description
Technical field
The invention belongs to the gas sweetening chemical technology field, be specifically related to the biogas desulfurization technological process for purifying that a kind of wet method is connected with dry method.
Background technology
Organic sewage produces a large amount of biogas through anaerobic treatment, and its main component is CH
4And CO
2, also have micro-H
2S gas, H
2S is the objectionable impurities of severe toxicity, and H
2S is dissolved in the steam and produces hydrosulphuric acid and will cause heavy corrosion to gas pipe line, gas-holder and gas equipment, has shortened the work-ing life of e-quipment and pipe.In addition, the H in the biogas
2Generate SO after the S burning
2, it can be combined with water and change into acid very strong sulfurous acid aerosol, contaminate environment, affect HUMAN HEALTH, therefore, China's combustion gas standard code: when utilizing biogas energy, hydrogen sulfide content in the biogas must not surpass 20mg/Nm3, and the several applications field need be lower than 15 mg/Nm3, but the H in the biogas
2The S mass concentration is generally at 0.8 ~ 3.2g/Nm3, and far above the combustion gas standard code, so the desulfurization of biogas is important step indispensable in the Gas application.
Comparatively traditional in the biogas desulfurization method have dry desulfurization and wet desulphurization two classes, dry desulfurization is simple to operate in industrial applications, facility investment is little, its outstanding advantages is that degree of purification is high, and can remove multiple organic sulfide, be suitable for the application of small scale, sulphur content biogas desulfurization when low, otherwise that sweetening agent is changed is frequent, sulphur can not the efficient recovery problem be difficult to solve, such as iron oxide process, activated carbon method, sieve method etc.Wet desulphurization is to contact with unstripped gas with specific solvent, remove hydrogen sulfide wherein, this method is generally large for the treatment of scale, the thick desulfurization that sulphur content is high, but it also exists Sulfur capacity low, purify the shortcoming of low precision, generally do not remove organosulfur, applicable have pressurization WATER-WASHING METHOD, alkali absorb method, ferrous solution absorption process, tannin extract (tannin) method etc.In addition, novel biogas desulfurization technique also has the methods such as membrane sepn desulfurization and biological desulphurization, but the operation and maintenance cost is high, difficulty is large, not yet in industrial general widespread use.And in the large-sized biogas industrial applications, also do not have a kind of large ability, precision height, cost to hang down and can reclaim to greatest extent the application art of sulphur resource.
Summary of the invention
The present invention be directed to the deficiency in the existing biogas desulfurization industrialization application technology, the biogas desulfurization method of a kind of wet method and dry method series connection is provided, it is large to have treatment capacity, treatment effect is stable, sulfur recovery rate is high, sweetening agent is easily regenerated, and the advantage of long service life guarantees that the biogas hydrogen sulfide content reaches service requirements.
The biogas desulfurization method of this wet method and dry method series connection is characterized in that preparing in the steps below:
1). anaerobic biological is processed the biogas that produces and is boosted to 8～10.0Mpa by blower fan, enters and cools to 25～30 ℃ in the water wash column;
2). the biogas after the cooling enters the wet desulfuration tower of interior installing filler, and thick biogas and desulfuration solution, catalyzer counter current contact remove most of hydrogen sulfide impurities in the process of contact in tower; Desulfuration solution adopts NaCO
3Solution, concentration remains NaCO
3Solution 2～3g/l, catalyzer 4ppm;
3). then separate moisture in the biogas through dehydration tower, enter dry desulfurizing tower again, dry desulfurization adopts amorphous FeOOH desulfurizer, further removes hydrogen sulfide, makes it to drop to enter in the biogas cabinet below 15 mg/Nm3;
4). absorbed H
2The rich solution of S enters regeneration tank, by the HS that makes under the oxygen effect in the solution that is filled with of air
-Ionic oxide formation is elemental sulfur, separates from regeneration tank with the form of sulphur foam, and doctor solution obtains the reprocessing cycle use simultaneously, and the sulphur foam reclaims through becoming sulphur cream after the steam heating.
The option and installment of the inventive method and sweetening agent has solved single treatment process and can't satisfy simultaneously the contradiction that treatment scale is large and precision, stability are difficult to guarantee for larger biogas desulfurization system in industrial applications.Wet desulphurization removes in the biogas 80%～95% H
2S, dry desulfurization adopt amorphous FeOOH desulfurizer, and this sweetening agent efficient is high, Sulfur capacity is large, regularly change after the use, airing, can guarantee the stability of biogas desulfurization effect.Dry desulfurization can further make H
2The S stable content is down to below the 15mg/Nm3, and always removing efficient can reach more than 99%.Can guarantee the hydrogen sulfide in methane stable content in 15 mg/Nm3, satisfy the specification of quality of biogas in other Application Areas.The inventive method is applicable to the desulfurization of large-sized biogas engineering and uses, it is large to have treatment capacity, treatment effect is stable, sulfur recovery rate is high, sweetening agent such as easily regenerates, recycles at the characteristics, can prolong in the biogas industrial applications equipment pipe work-ing life, stop the environmental problem of secondary pollution in the biogas utilization, and give security for the further purification utilization of biogas.
Description of drawings
Fig. 1 is the process flow sheet of biogas desulfurization method of the present invention.
Be labeled as among the figure: 1. surge tank, 2. biogas booster fan, 3. water wash column, 4. wet desulfuration tower, 5. dehydration tower, 6. dry desulfurizing tower, 7. biogas cabinet, 8. regeneration tank, 9. sulfur melting kettle, 10. recycle pump.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
Example: the biogas desulfurization method that a kind of wet method is as shown in Figure 1 connected with dry method, concrete steps are as follows:
Thick biogas (H
2S content about 800～2200mg/Nm3) enters surge tank 1(pressure 3 ~ 5kpa), boosted to by biogas booster fan 2 that 10.0Mpa is laggard to enter water wash column 3, the biogas temperature is down to 25～30 ℃, then enter wet desulfuration tower 4, thick biogas and desulfuration solution, catalyzer counter current contact in tower, remove the impurity such as most of hydrogen sulfide, desulfuration solution adopts NaCO
3Solution, concentration remains NaCO
3Solution 2～3g/l, catalyzer 4ppm; Then after biogas enters dehydration tower 5 and separates moisture, enter dry desulfurizing tower 6, dry desulfurization adopts amorphous FeOOH desulfurizer, further removes hydrogen sulfide, makes it to drop to below 15 mg/Nm3, enters at last biogas cabinet 7 and is used again.Absorb H
2The rich solution of S enters regeneration tank 8, and regeneration becomes lean solution under the oxygen effect, delivers to wet desulfuration tower 4 by recycle pump 10 and recycles, and rich solution makes the HS in the solution under the oxygen effect
-Ionic oxide formation is elemental sulfur, separates from regeneration tank 8 with the form of sulphur foam, enters sulfur melting kettle 9, becomes sulphur cream by steam treatment and reclaims the sulphur resource.
The option and installment of whole process unit and sweetening agent has solved in industrial applications, single treatment process is for larger biogas desulfurization system, can't satisfy simultaneously the contradiction that treatment scale is large and precision, stability are difficult to guarantee, has simultaneously the sulfur recovery rate height, sweetening agent is easily regenerated, the advantages such as long service life, and can guarantee the hydrogen sulfide in methane stable content in 15 mg/Nm3, satisfy the specification of quality of biogas in other Application Areas.
Claims (1)
1. the biogas desulfurization method of a wet method and dry method series connection is characterized in that preparing in the steps below:
1) anaerobic biological is processed the biogas that produces and is boosted to 8～10.0Mpa by blower fan, enters and lowers the temperature 25～30 ℃ in the water wash column;
2) biogas after the cooling enters the wet desulfuration tower of interior installing filler, and thick biogas and desulfuration solution, catalyzer counter current contact remove most of hydrogen sulfide impurities in the process of contact in tower; Desulfuration solution adopts NaCO
3Solution, concentration remains NaCO
3Solution 2～3g/l, catalyzer 4ppm;
3) then separate moisture in the biogas through dehydration tower, enter dry desulfurizing tower again, dry desulfurization adopts amorphous FeOOH desulfurizer, further removes hydrogen sulfide, makes it to drop to enter in the biogas cabinet below 15 mg/Nm3;
4) absorbed H
2The rich solution of S enters regeneration tank, by the HS that makes under the oxygen effect in the solution that is filled with of air
-Ionic oxide formation is elemental sulfur, separates from regeneration tank with the form of sulphur foam, and doctor solution obtains the reprocessing cycle use simultaneously, and the sulphur foam reclaims through becoming sulphur cream after the steam heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104672846A CN103013600A (en) | 2012-11-19 | 2012-11-19 | Biogas desulfurization method in series of wet method with dry method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104672846A CN103013600A (en) | 2012-11-19 | 2012-11-19 | Biogas desulfurization method in series of wet method with dry method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103013600A true CN103013600A (en) | 2013-04-03 |
Family
ID=47962721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104672846A Pending CN103013600A (en) | 2012-11-19 | 2012-11-19 | Biogas desulfurization method in series of wet method with dry method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103013600A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215095A (en) * | 2013-04-28 | 2013-07-24 | 王建瓯 | Biogas mixed gas and production process thereof |
| CN103980971A (en) * | 2014-05-29 | 2014-08-13 | 湖南和道资源科技有限公司 | Methane treatment method and methane treatment system |
| CN107227185A (en) * | 2017-07-11 | 2017-10-03 | 江苏苏港和顺生物科技有限公司 | A kind of filtration integrated equipment of biogas production wet desulphurization elemental sulfur |
| CN108753389A (en) * | 2018-07-23 | 2018-11-06 | 安徽金种子酒业股份有限公司 | A kind of biogas purification method |
| CN108795714A (en) * | 2017-05-02 | 2018-11-13 | 扬州永清新能源发展有限公司 | A kind of biogas Preparation equipment and its method |
| CN110760356A (en) * | 2019-11-04 | 2020-02-07 | 广东石油化工学院 | A multiple-effect purification device for animal manure marsh gas |
| CN112080401A (en) * | 2020-09-22 | 2020-12-15 | 四川光和兴科技有限公司 | Safe production system of high concentration marsh gas |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003201488A (en) * | 2001-10-19 | 2003-07-18 | Mitsubishi Chemicals Corp | Wet desulfurization method |
| CN101691512A (en) * | 2009-10-14 | 2010-04-07 | 长春惠工净化工业有限公司 | Fine desulfurization process by dry process for natural gas |
| CN102134519A (en) * | 2010-01-22 | 2011-07-27 | 上海寰球石油化学工程有限公司 | Combined process for natural gas desulfurization with high resource utilization ratio and good environmental protection effect |
| CN102154046A (en) * | 2011-03-07 | 2011-08-17 | 罗东晓 | Method for processing and utilizing methane in refuse landfill |
| CN201942655U (en) * | 2011-01-30 | 2011-08-24 | 山东十方环保能源股份有限公司 | High-efficiency mixing multistep desulfurizer for biomass methane |
| CN102504902A (en) * | 2011-11-11 | 2012-06-20 | 南通正拓气体有限公司 | Method and device for separation production of biomass natural gas from marsh gas with high hydrogen sulfide content |
| CN202277779U (en) * | 2011-10-31 | 2012-06-20 | 江苏一同环保工程技术有限公司 | Dry-process and wet-process combined desulfurization device |
-
2012
- 2012-11-19 CN CN2012104672846A patent/CN103013600A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003201488A (en) * | 2001-10-19 | 2003-07-18 | Mitsubishi Chemicals Corp | Wet desulfurization method |
| CN101691512A (en) * | 2009-10-14 | 2010-04-07 | 长春惠工净化工业有限公司 | Fine desulfurization process by dry process for natural gas |
| CN102134519A (en) * | 2010-01-22 | 2011-07-27 | 上海寰球石油化学工程有限公司 | Combined process for natural gas desulfurization with high resource utilization ratio and good environmental protection effect |
| CN201942655U (en) * | 2011-01-30 | 2011-08-24 | 山东十方环保能源股份有限公司 | High-efficiency mixing multistep desulfurizer for biomass methane |
| CN102154046A (en) * | 2011-03-07 | 2011-08-17 | 罗东晓 | Method for processing and utilizing methane in refuse landfill |
| CN202277779U (en) * | 2011-10-31 | 2012-06-20 | 江苏一同环保工程技术有限公司 | Dry-process and wet-process combined desulfurization device |
| CN102504902A (en) * | 2011-11-11 | 2012-06-20 | 南通正拓气体有限公司 | Method and device for separation production of biomass natural gas from marsh gas with high hydrogen sulfide content |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215095A (en) * | 2013-04-28 | 2013-07-24 | 王建瓯 | Biogas mixed gas and production process thereof |
| CN103980971A (en) * | 2014-05-29 | 2014-08-13 | 湖南和道资源科技有限公司 | Methane treatment method and methane treatment system |
| CN108795714A (en) * | 2017-05-02 | 2018-11-13 | 扬州永清新能源发展有限公司 | A kind of biogas Preparation equipment and its method |
| CN107227185A (en) * | 2017-07-11 | 2017-10-03 | 江苏苏港和顺生物科技有限公司 | A kind of filtration integrated equipment of biogas production wet desulphurization elemental sulfur |
| CN107227185B (en) * | 2017-07-11 | 2023-06-23 | 江苏盐城港盐农循环农业有限公司 | Wet desulfurization elemental sulfur filtering integrated equipment for biogas production |
| CN108753389A (en) * | 2018-07-23 | 2018-11-06 | 安徽金种子酒业股份有限公司 | A kind of biogas purification method |
| CN110760356A (en) * | 2019-11-04 | 2020-02-07 | 广东石油化工学院 | A multiple-effect purification device for animal manure marsh gas |
| CN112080401A (en) * | 2020-09-22 | 2020-12-15 | 四川光和兴科技有限公司 | Safe production system of high concentration marsh gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103013600A (en) | Biogas desulfurization method in series of wet method with dry method | |
| Yentekakis et al. | Biogas management: advanced utilization for production of renewable energy and added-value chemicals | |
| CN103111177B (en) | Method and device for removing hydrogen sulfide in gas phase through oxidation | |
| CN107758617B (en) | Method for producing hydrogen by using biogas biomass | |
| CN102847431B (en) | Method for treating claus technical tail gas | |
| CN103205296A (en) | Wet method and dry method series-connected biogas desulfurization purifying process | |
| CN109499334B (en) | Efficient trapping and separating H2S and CO2And resource utilization method | |
| CN104138713A (en) | Method, device and reactor for recovery of sulfur from acidic gas | |
| CN103170223A (en) | Rotational flow strengthening method and device for purifying sulfur production tail gases by Claus method | |
| CN109569193A (en) | It is a kind of to absorb the sulfur method synchronous with regeneration | |
| CN104624033A (en) | Combination method for deep desulfurization of liquefied gas | |
| CN105032157A (en) | Amine liquid desulphurization technology and device for removing hydrogen sulfide and carbonyl sulfide in acid gas | |
| CN105126380A (en) | Coking exhaust gas treatment method | |
| CN102512933B (en) | Method for treating and utilizing oxidation sweetening tail gas | |
| CN113019107A (en) | Method for oxidizing hydrogen sulfide and removing carbon dioxide by iron-based ionic liquid wet method | |
| CN105126530A (en) | Coking exhaust gas purification method | |
| CN202036906U (en) | NHD (polyethylene glycol dimethyl ether) desulfuration and decarburization condensate recycling system | |
| CN104998517A (en) | Method for increasing concentrations of acid gas hydrogen sulfide and carbonyl sulfide in low-temperature methanol washing process | |
| CN102453566A (en) | Purified gas dehydration technology applied in natural gas with high sulfur content | |
| CN209809912U (en) | Device for removing non-thiol sulfur and thiol in liquefied gas by wet method | |
| CN103724145A (en) | Solvent and method for purification and recovery of methane from landfill gas | |
| CN209128035U (en) | Claus tail-gas clean-up system | |
| CN216639407U (en) | System for preparing hydrogen from coke oven gas by utilizing desorption gas to regenerate decarbonization liquid | |
| CN207347530U (en) | A kind of biogas desulfurization decarburization device for adding odor | |
| CN205055476U (en) | Totally -enclosed coking tail gas processing apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130403 |