CN104498119A - Biogas purifying method - Google Patents
Biogas purifying method Download PDFInfo
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- CN104498119A CN104498119A CN201410739480.3A CN201410739480A CN104498119A CN 104498119 A CN104498119 A CN 104498119A CN 201410739480 A CN201410739480 A CN 201410739480A CN 104498119 A CN104498119 A CN 104498119A
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- biogas
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- desulfurization
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Abstract
The invention discloses a biogas purifying method, and relates to the technical field of energy processing. The biogas purifying method comprises the following steps of: filtering; drying; desulfurizing; compressing; cooling for the first time; purifying; cooling for the last time; collecting, and the like. The biogas purifying method disclosed by the invention can be used for solving the problems of high biogas purification cost and poor recycling.
Description
Technical field
The present invention relates to energy processing technique field, especially a kind of method of purification of biomass marsh gas.
Background technology
Biogas is the flammable mixed gas of one produced by microorganism, main component is the methane of 50 ~ 75%, the carbonic acid gas of 25 ~ 45%, also has a small amount of hydrogen sulfide, carbon monoxide, nitrogen, oxygen etc., the purification of biogas is mainly removed the hydrogen sulfide in biogas, carbonic acid gas, carbon monoxide, water vapor, to eliminate in biogas these obnoxious flavoures and water to pipeline, gas-holder and the factor affecting biogas purposes; At present, due to domestic high to methane purification cost, recyclability is poor, cause biogas mostly can only be used in rural households and use as general fuel, purposes is single, use value is low.
Summary of the invention
The object of this invention is to provide a kind of methane purification method, it can solve the problem of existing methane purification cost, recyclability difference.
In order to solve the problem, the technical solution used in the present invention is:
This methane purification method, comprises the following steps:
A, filtration: the entrance input of biogas from strainer filtered, the filtering net in strainer is 300 ~ 500 orders, then discharges from the outlet of strainer;
B, drying: enter drying tower from the biogas of filter outlet discharge from the entrance of drying tower and carry out drying, dried biogas is discharged from the outlet of drying tower;
C, desulfurization: dried biogas enters thionizer desulfurization from the entrance of thionizer, described desulfurization adopts the method desulfurization of removing sulfide at normal temperatures and pressures, and sweetening agent is based on ferric oxide; Biogas after desulfurization exports from the outlet of thionizer;
D, compression: the biogas after desulfurization enters compressor from the input aperture of compressor and compresses, make biogas pressure reach 10 MPa ~ 15MPa and discharge from compressor outlet;
E, first cooling: the biogas exported from compressor cools first from the first cooling tower, is cooled to normal temperature, and exports from the outlet of the first cooling tower;
F, purification: after cooled biogas is first discharged from the outlet of the first cooling tower, enter purification tower, the temperature of purification tower controls at-40 DEG C ~-50 DEG C, carbonic acid gas in biogas is discharged from the lower exit port of purification tower, discharges through the outlet of biogas then above purification tower of purifying;
G, last cool: the biogas exporting discharge above purification tower enters last cooling tower from the entrance of last cooling tower and carries out cooling twice, makes the temperature of biogas reach 15 DEG C ~ 25 DEG C, and the outlet above last cooling tower is discharged;
H, collection: enter gas-holder from the biogas of last cooling tower output from the entrance of gas-holder and store, so far, the gas in gas-holder is methane gas.
Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect:
1, adopt method of the present invention can remove the obnoxious flavour such as hydrogen sulfide, carbonic acid gas, carbon monoxide, water vapor in biogas comparatively easily, make the fire damp content after purification be greater than 99%;
2, simple, the mature production technology of production line manufacture of the present invention.
Accompanying drawing explanation
Fig. 1 is production line schematic diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described: as shown in Figure 1,
A kind of methane purification method, comprises the following steps:
A, filtration: the entrance input of biogas 1 from strainer 2 filtered, the filtering net in strainer 2 is 300 ~ 500 orders, then discharges from the outlet of strainer 2;
B, drying: enter drying tower 3 from the biogas of strainer 2 outlet discharge from the entrance of drying tower 3 and carry out drying, dried biogas is discharged from the outlet of drying tower 3;
C, desulfurization: dried biogas enters thionizer 4 desulfurization from the entrance of thionizer 4, described desulfurization adopts the method desulfurization of removing sulfide at normal temperatures and pressures, and sweetening agent is based on ferric oxide; Biogas after desulfurization exports from the outlet of thionizer 4;
D, compression: the biogas after desulfurization enters compressor 5 from the input aperture of compressor 5 and compresses, make biogas pressure reach 10 MPa ~ 15MPa and export from compressor 5 to discharge;
E, first cooling: the biogas exported from compressor 5 cools first from the first cooling tower 6, is cooled to normal temperature, and exports from the outlet of the first cooling tower 6;
F, purification: after cooled biogas is first discharged from the outlet of the first cooling tower 6, enter purification tower 7, the temperature of purification tower 7 controls at-40 DEG C ~-50 DEG C, carbonic acid gas in biogas is discharged from the lower exit port of purification tower 7, discharges through the outlet of biogas then above purification tower 7 of purifying;
G, last cool: the biogas exporting discharge above purification tower 7 enters last cooling tower 8 from the entrance of last cooling tower 8 and carries out cooling twice, makes the temperature of biogas reach 15 DEG C ~ 25 DEG C, and the outlet above last cooling tower 8 is discharged;
H, collection: enter gas-holder 9 from the biogas of last cooling tower 8 output from the entrance of gas-holder 9 and store, so far, the gas in gas-holder 9 is methane gas.
Claims (1)
1. a methane purification method, is characterized in that: comprise the following steps:
A, filtration: the entrance input of biogas (1) from strainer (2) filtered, the filtering net in strainer (2) is 300 ~ 500 orders, then discharges from the outlet of strainer (2);
B, drying: enter drying tower (3) from the biogas of strainer (2) outlet discharge from the entrance of drying tower (3) and carry out drying, dried biogas is discharged from the outlet of drying tower (3);
C, desulfurization: dried biogas enters thionizer (4) desulfurization from the entrance of thionizer (4), described desulfurization adopts the method desulfurization of removing sulfide at normal temperatures and pressures, and sweetening agent is based on ferric oxide; Biogas after desulfurization exports from the outlet of thionizer (4);
D, compression: the biogas after desulfurization enters compressor (5) from the input aperture of compressor (5) and compresses, make biogas pressure reach 10 MPa ~ 15MPa and discharge from compressor (5) outlet;
E, first cooling: the biogas exported from compressor (5) cools first from the first cooling tower (6), is cooled to normal temperature, and exports from the outlet of the first cooling tower (6);
F, purification: after cooled biogas is first discharged from the outlet of the first cooling tower (6), enter purification tower (7), the temperature of purification tower (7) controls at-40 DEG C ~-50 DEG C, carbonic acid gas in biogas is discharged from the lower exit port of purification tower (7), then discharges from the outlet of purification tower (7) top through the biogas of purifying;
G, last cool: enter last cooling tower (8) from the biogas of purification tower (7) top outlet discharge from the entrance of last cooling tower (8) and carry out cooling twice, make the temperature of biogas reach 15 DEG C ~ 25 DEG C, and discharge from the outlet of last cooling tower (8) top;
H, collection: the biogas exported from last cooling tower (8) enters gas-holder (9) from the entrance of gas-holder (9) and stores, and so far, the gas in gas-holder (9) is methane gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410739480.3A CN104498119A (en) | 2014-12-08 | 2014-12-08 | Biogas purifying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410739480.3A CN104498119A (en) | 2014-12-08 | 2014-12-08 | Biogas purifying method |
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| Publication Number | Publication Date |
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| CN104498119A true CN104498119A (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410739480.3A Pending CN104498119A (en) | 2014-12-08 | 2014-12-08 | Biogas purifying method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107235819A (en) * | 2017-07-10 | 2017-10-10 | 陕西理工大学 | A kind of method of purification of methane |
Citations (4)
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|---|---|---|---|---|
| CN101492222A (en) * | 2008-12-30 | 2009-07-29 | 广西贵糖（集团）股份有限公司 | Method for comprehensive treatment of wastewater and sludge gas utilization of cane sugar factory |
| CN101885993A (en) * | 2010-07-12 | 2010-11-17 | 赛鼎工程有限公司 | Purification process for removing sulphur and carbon dioxide in gas by using two-step method |
| CN102190541A (en) * | 2010-03-12 | 2011-09-21 | 北京环卫集团环境研究发展有限公司 | Method for recovering methane for industrial production of clean fuel through deep purification of landfill gas |
| CN102242059A (en) * | 2011-04-25 | 2011-11-16 | 青岛天人环境股份有限公司 | Device and method for preparing automobile fuel gas by utilizing organic wastes |
-
2014
- 2014-12-08 CN CN201410739480.3A patent/CN104498119A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101492222A (en) * | 2008-12-30 | 2009-07-29 | 广西贵糖（集团）股份有限公司 | Method for comprehensive treatment of wastewater and sludge gas utilization of cane sugar factory |
| CN102190541A (en) * | 2010-03-12 | 2011-09-21 | 北京环卫集团环境研究发展有限公司 | Method for recovering methane for industrial production of clean fuel through deep purification of landfill gas |
| CN101885993A (en) * | 2010-07-12 | 2010-11-17 | 赛鼎工程有限公司 | Purification process for removing sulphur and carbon dioxide in gas by using two-step method |
| CN102242059A (en) * | 2011-04-25 | 2011-11-16 | 青岛天人环境股份有限公司 | Device and method for preparing automobile fuel gas by utilizing organic wastes |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107235819A (en) * | 2017-07-10 | 2017-10-10 | 陕西理工大学 | A kind of method of purification of methane |
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Application publication date: 20150408 |