CN103834449A - Methane liquefying method - Google Patents
Methane liquefying method Download PDFInfo
- Publication number
- CN103834449A CN103834449A CN201410100580.1A CN201410100580A CN103834449A CN 103834449 A CN103834449 A CN 103834449A CN 201410100580 A CN201410100580 A CN 201410100580A CN 103834449 A CN103834449 A CN 103834449A
- Authority
- CN
- China
- Prior art keywords
- methane
- biogas
- liquid
- enters
- liquefied
- 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.)
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a methane liquefying method, wherein a methane enters a primary filter from a methane digester through a pipe so that a liquid and impurities in the methane are filtered out, next, the methane enters a secondary filter to be removed from sulfur, water and carbon dioxide, after the methane is filtered completely, a cosolvent is added to the methane and then methane enters an air compressor so as to be compressed and pressurized, and cryogenically liquefied, and as a result, the methane is changed into a liquid, and finally, the liquid is divided and put in methane cylinders through a high-pressure pipe. The method can be used for solving the storage problem of excessive methane in a peak season of the biogas; the volume of the liquefied methane is reduced 625 times, the liquefied methane can be canned and stored in normal-pressure liquid cylinders or storage cylinders having vacuum heat insulation and cold insulation functions, the containers holding the liquid methane have excellent heat insulation capability, and even in transit, the liquid methane volatilizes slightly, and moreover, the energy source is utilized sufficiently.
Description
Technical field
The present invention relates to a kind of gas liquefaction method, relate in particular to a kind of biogas liquefied method.
Background technology
China is large agricultural country, and people in the countryside account for 70% of national population, and in the energy of its consumption, the overwhelming majority belongs to energy for life, although energy-output ratio is for each person every year fewer, the quantity of energy consuming is equivalent to 369.5kg standard coal.
For a long time, rural area is taking fuel wood and charcoal as main energy sources, and many areas occur that firewood spending rate exceedes tree growth speed, and forest vegetation is subject to extensive damage, has accelerated Land capability decline, even causes desertification.Moreover burning fuel wood charcoal energy utilization rate is extremely low, combustion product gases can cause severe contamination to atmosphere, destroys life in the countryside environment.
Biogas is a kind of clean green energy resource easily, and its main component is methane, uses the methane gas of 1 unit, can reduce discharging the carbonic acid gas of 21 units.Biogas, when clean energy is provided, can be alleviated China's energy and environment pressure, realizes energy-saving and emission-reduction, builds a conservation-minded society.
In the time producing the busy season of biogas, too much biogas cannot store and all be discharged in air, waste energy, and be a waste greatly for the energy or scarce society now.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of biogas liquefied method, has solved the storage problem of too much biogas in the time of the biogas busy season.
For achieving the above object, the invention provides following technical scheme: a kind of biogas liquefied method, comprises the following steps:
(1) biogas enters grade one filter from methane-generating pit by pipeline, filters out liquid and impurity wherein, then enters secondary filter, desulfurization, dehydration, decarbonation.
(2) above-mentioned filtration is completed to biogas and add solubility promoter, enter air compressor, compression supercharging, cryogenic liquefying, makes biogas become liquid, divides and installs to tank for sewage gas along pressure piping.
Preferably, solubility promoter is the mixed solution of a certain amount of combination partner of the following liquid phase low molecular hydrocarbon of carbon five.
Preferably, solubility promoter is the mixed solution that mainly contains a certain amount of ethane, special propane, special butane combination partner.
Adopt the beneficial effect of above technical scheme to be: a kind of biogas liquefied method, the method solved in the time of the biogas busy season, the too much storage problem of biogas, 625 times of methane volume-diminished after liquefaction, can cannedly deposit in the normal-pressure liquid gas cylinder or storage tank with vacuum insulation cold insulation, the container of these carrying liquid methane has very good heat insulation capacity, and both having made is also just to have in transit micro-volatilization, and the energy is made full use of.
Embodiment
Embodiment 1:
A kind of biogas liquefied method, comprises the following steps:
(1) biogas enters grade one filter from methane-generating pit by pipeline, filters out liquid and impurity wherein, then enters secondary filter, desulfurization, dehydration, decarbonation.
(2) above-mentioned filtration is completed to biogas and add solubility promoter, enter air compressor, compression supercharging, cryogenic liquefying, makes biogas become liquid, divides and installs to tank for sewage gas along pressure piping.
Solubility promoter is the mixed solution of a certain amount of combination partner of the following liquid phase low molecular hydrocarbon of carbon five.
Solubility promoter is the mixed solution that mainly contains a certain amount of ethane, special propane, special butane combination partner.
Adopt the beneficial effect of above technical scheme to be: a kind of biogas liquefied method, the method solved in the time of the biogas busy season, the too much storage problem of biogas, 625 times of methane volume-diminished after liquefaction, can cannedly deposit in the normal-pressure liquid gas cylinder or storage tank with vacuum insulation cold insulation, the container of these carrying liquid methane has very good heat insulation capacity, and both having made is also just to have in transit micro-volatilization, and the energy is made full use of.
Above-described is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, and these all belong to protection scope of the present invention.
Claims (3)
1. a biogas liquefied method, is characterized in that: comprise the following steps:
(1) biogas enters grade one filter from methane-generating pit by pipeline, filters out liquid and impurity wherein, then enters secondary filter, desulfurization, dehydration, decarbonation.
(2) above-mentioned filtration is completed to biogas and add solubility promoter, enter air compressor, compression supercharging, cryogenic liquefying, makes biogas become liquid, divides and installs to tank for sewage gas along pressure piping.
2. the biogas liquefied method of one according to claim 1, is characterized in that: described solubility promoter is the mixed solution of a certain amount of combination partner of the following liquid phase low molecular hydrocarbon of carbon five.
3. the biogas liquefied method of one according to claim 1, is characterized in that: described solubility promoter is the mixed solution that mainly contains a certain amount of ethane, special propane, special butane combination partner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410100580.1A CN103834449A (en) | 2014-03-18 | 2014-03-18 | Methane liquefying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410100580.1A CN103834449A (en) | 2014-03-18 | 2014-03-18 | Methane liquefying method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103834449A true CN103834449A (en) | 2014-06-04 |
Family
ID=50798350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410100580.1A Pending CN103834449A (en) | 2014-03-18 | 2014-03-18 | Methane liquefying method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103834449A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101014801A (en) * | 2004-08-26 | 2007-08-08 | 西翁马里泰姆公司 | Storage of natural gas in liquid solvents and methods to absorb and segregate natural gas into and out of liquid solvents |
| CN201104074Y (en) * | 2007-11-06 | 2008-08-20 | 刘兴国 | Skid mounted biogas purifying and liquefying device |
| CN102154046A (en) * | 2011-03-07 | 2011-08-17 | 罗东晓 | Method for processing and utilizing methane in refuse landfill |
| JP2011236378A (en) * | 2010-05-13 | 2011-11-24 | Air Water Inc | Liquefied natural gas for automobiles and production method therefor |
| CN103232871A (en) * | 2013-05-08 | 2013-08-07 | 山西汾西机电有限公司 | Methane purification system and methane purification technology thereof |
| CN103396853A (en) * | 2013-08-21 | 2013-11-20 | 尹良友 | Technology for preparing natural gas by purifying biogas |
-
2014
- 2014-03-18 CN CN201410100580.1A patent/CN103834449A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101014801A (en) * | 2004-08-26 | 2007-08-08 | 西翁马里泰姆公司 | Storage of natural gas in liquid solvents and methods to absorb and segregate natural gas into and out of liquid solvents |
| CN201104074Y (en) * | 2007-11-06 | 2008-08-20 | 刘兴国 | Skid mounted biogas purifying and liquefying device |
| JP2011236378A (en) * | 2010-05-13 | 2011-11-24 | Air Water Inc | Liquefied natural gas for automobiles and production method therefor |
| CN102154046A (en) * | 2011-03-07 | 2011-08-17 | 罗东晓 | Method for processing and utilizing methane in refuse landfill |
| CN103232871A (en) * | 2013-05-08 | 2013-08-07 | 山西汾西机电有限公司 | Methane purification system and methane purification technology thereof |
| CN103396853A (en) * | 2013-08-21 | 2013-11-20 | 尹良友 | Technology for preparing natural gas by purifying biogas |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140604 |