CN203443264U - Device for extracting methane liquid from purified garbage landfill gas - Google Patents
Device for extracting methane liquid from purified garbage landfill gas Download PDFInfo
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- CN203443264U CN203443264U CN201320436475.6U CN201320436475U CN203443264U CN 203443264 U CN203443264 U CN 203443264U CN 201320436475 U CN201320436475 U CN 201320436475U CN 203443264 U CN203443264 U CN 203443264U
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 239000007788 liquid Substances 0.000 title claims abstract description 80
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 194
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 97
- 239000007789 gas Substances 0.000 claims abstract description 83
- 238000001179 sorption measurement Methods 0.000 claims abstract description 52
- 239000002808 molecular sieve Substances 0.000 claims abstract description 16
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000009833 condensation Methods 0.000 claims description 33
- 230000005494 condensation Effects 0.000 claims description 33
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 16
- 230000000087 stabilizing effect Effects 0.000 claims description 14
- 238000005057 refrigeration Methods 0.000 claims description 12
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 8
- 239000001569 carbon dioxide Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 8
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 230000001351 cycling effect Effects 0.000 abstract 2
- 238000007670 refining Methods 0.000 abstract 2
- 238000004134 energy conservation Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000007781 pre-processing Methods 0.000 abstract 1
- 238000000746 purification Methods 0.000 description 8
- 150000002829 nitrogen Chemical class 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000005431 greenhouse gas Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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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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- Processing Of Solid Wastes (AREA)
Abstract
The utility model discloses a device for extracting methane liquid from purified garbage landfill gas. The device comprises a preprocessing unit, a molecular sieve adsorption unit, a main heat exchanger, a low-temperature refining tower, a nitrogen refrigerating cycling unit and a controller. The device has the advantages that the energy is adequately utilized, the garbage landfill gas can be prevented from being directly exhausted to the atmosphere not to cause the environmental pollution and greenhouse effect, the cold source and the heat source needed in the process for extracting the liquid methane in a low-temperature refining way from the purified garbage landfill gas are supplied by the nitrogen refrigerating cycling unit, simplicity, economical efficiency and practicability in innovation can be realized, the cold and heat exchange can be realized through the energy of each working section, the energy utilization rate is high, the purity of the recycled liquid methane is high, and an effect of energy conservation, emission reduction and environmental treatment can be realized.
Description
Technical Field
The utility model relates to a gaseous low temperature rectification separation technical field, especially a device of purification methane liquid in the landfill gas after follow purification.
Background
With the rapid increase of population and the continuous development of natural resources, the global warming caused by gas generated by industrial garbage and domestic garbage is serious, and the problem of threatening human health causes the emphasis of scientists in various countries in the world. In order to stabilize the content of greenhouse gases in the atmosphere at a proper level and prevent severe climate change from causing harm to human beings, kyoto in japan passed the kyoto protocol, stipulates that developed and developing countries bear obligations to reduce carbon emissions, and China begins to bear the task of reducing greenhouse gas emission.
At present, hundreds of landfill sites in more than twenty countries are provided with landfill gas recycling devices, and the utilization mode comprises the steps of 1) directly burning to generate steam for domestic or industrial heat supply; 2) generating electricity by an internal combustion engine as a motive fuel for a vehicle; 3) for use in the carbon dioxide industry; 4) a feedstock for the production of methanol; 5) after deep purification treatment, the product can be used as pipeline gas, etc. Among them, power generation, civil fuel and automobile fuel are the three most common ways of utilization.
China is a national action scheme for collecting and utilizing Chinese urban garbage landfill gas, the recycling of the garbage landfill gas is highly emphasized and supported by leaders at all levels after starting in Anshan, Hangzhou, Nanjing and the like, the recycling of the garbage landfill gas is widely developed all over the country, the pretreatment technology of the garbage landfill gas is successfully mastered, most of the technologies mainly adopt direct combustion, and in the near future, the embodiments of recycling carbon dioxide and methane by utilizing TSA and PSA processes exist, but the problems of low product purity and high cost exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a device of purification methane liquid in the landfill gas after purifying that product purity is high is provided.
In order to solve the technical problem, the utility model provides a device for purifying methane liquid from purified landfill gas, which comprises a pretreatment unit, a molecular sieve adsorption unit, a main heat exchanger, a low-temperature rectifying tower, a nitrogen refrigeration cycle unit and a controller; wherein,
the pretreatment unit comprises a landfill gas pressure stabilizing tank and a landfill gas compressor which are sequentially connected;
the molecular sieve adsorption unit is composed of a plurality of parallel adsorption towers for adsorbing carbon dioxide and water in the landfill gas, and the tower bottom of the adsorption tower is communicated with a landfill gas compressor in the pretreatment unit;
the low-temperature rectifying tower consists of an upper condensing evaporator, a packed rectifying tower body and a lower condensing evaporator;
the nitrogen refrigeration cycle unit is communicated with the main heat exchanger;
one end of the main heat exchanger is communicated with the top of the molecular sieve adsorption unit adsorption tower, and the other end of the main heat exchanger is communicated with the upper condensation evaporator and the packed rectifying tower body in the low-temperature rectifying tower.
Further, a first heat exchanger is arranged in the upper condensation evaporator, a second heat exchanger and a partition plate for separating liquid nitrogen from liquid methane are arranged in the lower condensation evaporator; the nitrogen refrigeration cycle unit consists of a nitrogen pressure stabilizing tank, a nitrogen compressor, a cooler, a nitrogen heat exchanger and a gas-liquid separator which form a loop, wherein a nitrogen output pipe and a nitrogen input pipe are arranged in the nitrogen heat exchanger, an expander is arranged between the nitrogen input pipe and the nitrogen output pipe, and a brake for controlling the rotating speed of the expander is connected to the expander; an input pipeline, a single gas output pipeline and a mixed gas output pipeline are arranged in the main heat exchanger, the input end of the single gas output pipeline is communicated with a nitrogen output pipe, the output end of the single gas output pipeline is communicated with a nitrogen pressure stabilizing tank, the input end of a gas-liquid mixture pipeline is communicated with the top of the adsorption tower, the output end of the gas-liquid mixture pipeline is communicated with the packed rectifying tower body, the input end of the mixed gas output pipeline is communicated with the top end of the first heat exchanger, and the output end of the mixed gas output; the gas-liquid separator is respectively communicated with the bottom end of the lower condensation evaporator and the side part of the upper condensation evaporator, and the side part of the lower condensation evaporator is communicated with the nitrogen input pipe.
Furthermore, the molecular sieve adsorption unit consists of an adsorption tower and a first program control valve assembly connected between the adsorption tower and a pipeline, and the opening and closing of the valve are realized by a controller. The adsorption towers are connected in parallel, a plurality of first program control valves are installed according to the time sequence requirement, the opening and closing of the valves are realized by a controller, the adsorption towers are staggered in time, and the continuous separation and purification can be realized by alternate adsorption.
Furthermore, a liquid methane tank is communicated with a liquid methane containing position in the lower condensation evaporator. The methane liquid after purification is sent to a liquid methane tank.
Furthermore, a filter for filtering dust in the gas-liquid mixture is arranged between the input end of the input pipeline and the adsorption tower.
Furthermore, an electric heater is arranged between the output end of the mixed gas output pipeline and the adsorption tower. The mixed gas is heated by an electric heater and then enters an adsorption tower in a saturated state, and the adsorption tower is activated and regenerated.
Furthermore, a mixed gas output pipeline between the main heat exchanger and the electric heater, a nitrogen input pipe between the gas-liquid separator and the nitrogen heat exchanger, a pipeline communicated with the bottom end of the lower condensation evaporator through the gas-liquid separator, a pipeline communicated with the upper condensation evaporator through the gas-liquid separator, a pipeline communicated with the side part of the lower condensation evaporator through the nitrogen input pipe, a pipeline communicated with the single gas output pipeline through the nitrogen output pipe and a pipeline communicated with the packed rectifying tower body through the input pipeline are respectively provided with a second program control valve assembly, and the opening and closing of the valve are realized through a controller.
After the structure more than adopting, the utility model discloses a device of purification methane liquid in landfill gas after purifying compares with prior art, has following advantage: the energy is fully utilized, the environmental pollution and the greenhouse effect caused by directly discharging the landfill gas into the atmosphere can be prevented, the cold source and the heat source required in the process of extracting the liquid methane by low-temperature rectification of the purified landfill gas are provided by the nitrogen refrigeration cycle unit, the method is simple, economic and practical innovation, the energy of each working section can realize cold and heat energy exchange, the energy utilization rate is high, the purity of the recovered liquid methane is high, and the effects of saving energy, reducing emission and managing the environment are achieved.
Drawings
Fig. 1 is a schematic view of the connection structure of the present invention.
Wherein: the device comprises a landfill gas pressure stabilizing tank 1, a landfill gas compressor 2, an adsorption tower 3, an upper condensation evaporator 4, a packed rectifying tower body 5, a lower condensation evaporator 6, a main heat exchanger 7, a first heat exchanger 8, a second heat exchanger 9, a partition plate 10, a nitrogen pressure stabilizing tank 11, a nitrogen compressor 12, a cooler 13, a nitrogen heat exchanger 14, a gas-liquid separator 15, a nitrogen output pipe 16, a nitrogen input pipe 17, an expander 18, an input pipeline 19, a single gas output pipeline 20, a mixed gas output pipeline 21, a liquid methane tank 22, a filter 23 and an electric heater 24.
Detailed Description
The invention is further described by the following embodiments in conjunction with the accompanying drawings.
As shown in fig. 1, the apparatus for purifying methane liquid from purified landfill gas provided in this embodiment includes a pretreatment unit, a molecular sieve adsorption unit, a main heat exchanger, a low-temperature rectification column, a nitrogen refrigeration cycle unit, and a controller; the pretreatment unit comprises a landfill gas pressure stabilizing tank 1 and a landfill gas compressor 2 which are sequentially connected; the molecular sieve adsorption unit is composed of two parallel adsorption towers 3 for adsorbing carbon dioxide and water in the landfill gas, and the tower bottom of the adsorption tower 3 is communicated with a landfill gas compressor 2 in the pretreatment unit; the low-temperature rectifying tower consists of an upper condensing evaporator 4, a packed rectifying tower body 5 and a lower condensing evaporator 6.
A first heat exchanger 8 is arranged in the upper condensation evaporator 4, a second heat exchanger 9 and a partition plate 10 for separating liquid nitrogen from liquid methane are arranged in the lower condensation evaporator 6, liquid methane is arranged above the partition plate 10, and liquid nitrogen is arranged below the partition plate 10; the nitrogen refrigeration cycle unit consists of a nitrogen pressure stabilizing tank 11, a nitrogen compressor 12, a cooler 13, a nitrogen heat exchanger 14 and a gas-liquid separator 15 which form a loop, wherein a nitrogen output pipe 16 and a nitrogen input pipe 17 are arranged in the nitrogen heat exchanger 14, an expander 18 is arranged between the nitrogen input pipe 17 and the nitrogen output pipe 16, and the expander 18 is connected with a brake for controlling the rotating speed of the expander; an input pipeline 19, a single gas output pipeline 20 and a mixed gas output pipeline 21 are arranged in the main heat exchanger 7, the input end of the single gas output pipeline 20 is communicated with the nitrogen output pipe 16, the output end of the single gas output pipeline is communicated with the nitrogen pressure stabilizing tank 11, the input end of the input pipeline 19 is communicated with the top of the adsorption tower 3, the output end of the input pipeline is communicated with the packed rectifying tower body 5, the input end of the mixed gas output pipeline 21 is communicated with the top end of the first heat exchanger 8, and the output end of the mixed gas output pipeline is communicated with the adsorption; the gas-liquid separator 15 is respectively communicated with the bottom end of the lower condensing evaporator 6 and the side part of the upper condensing evaporator 4, and the side part of the lower condensing evaporator 6 is communicated with the nitrogen input pipe 17.
The molecular sieve adsorption unit consists of an adsorption tower 3 and a first program control valve assembly connected between the adsorption tower and a pipeline, and the opening and closing of the valve are realized by a controller. The adsorption towers 3 are connected in parallel, a plurality of first program control valves are installed according to the time sequence requirement, the opening and closing of the valves are realized by a controller, the adsorption towers 3 are staggered in time, and the continuous separation and purification can be realized by alternate adsorption.
The liquid methane tank 22 is communicated with the liquid methane containing part in the lower condensation evaporator 6. The purified liquid methane enters the liquid methane tank 22.
A filter 23 for filtering dust in the gas-liquid mixture is arranged between the input end of the input pipeline 19 and the adsorption tower 3.
An electric heater 24 is arranged between the output end of the mixed gas output pipeline 21 and the adsorption tower 3.
A mixed gas output pipeline 21 between the main heat exchanger 7 and the electric heater 24, a nitrogen input pipe 17 between the gas-liquid separator 15 and the nitrogen heat exchanger 14, a pipeline for communicating the gas-liquid separator 15 with the bottom end of the lower condensation evaporator 6, a pipeline for communicating the gas-liquid separator 15 with the upper condensation evaporator 4, a pipeline for communicating the nitrogen input pipe 17 with the side part of the lower condensation evaporator 6, a pipeline for communicating the nitrogen output pipe 16 with the single gas output pipeline 20, and a pipeline for communicating the input pipeline 19 with the packed rectifying tower body 5 are respectively provided with a second valve component program control, and the opening and closing of the valves are realized by a controller.
The purified garbage landfill gas is stored in a garbage landfill gas pressure stabilizing tank 1, is compressed to required pressure by a garbage landfill gas compressor 2, then enters a molecular sieve adsorption unit to remove trace carbon dioxide and water in the gas, ensures that the purified gas participates in low-temperature rectification, and switches to another adsorption tower 3 to continue working through a controller when the carbon dioxide and water absorbed by one adsorption tower 3 of the molecular sieve adsorption unit is about to be in a saturated state. After carbon dioxide and water are removed in a normal-temperature molecular sieve adsorption unit, pure gas with dust particles removed in a filter 23 enters a main heat exchanger 7 and is cooled into a gas-liquid mixture (wherein part of methane gas in the pure gas is liquefied), enters a packed rectifying tower body 5 through an input pipeline 19, then energy exchange is carried out by utilizing cold source liquid nitrogen in an upper condensation evaporator 4 and heat source saturated nitrogen in a lower condensation evaporator 6, in the process, part of saturated nitrogen is condensed into liquid nitrogen, the liquid nitrogen flows into a gas-liquid separator 15 from the lower part of a partition plate 10 of the lower condensation evaporator 6, part of liquid nitrogen is gasified into nitrogen, the evaporation temperature of the liquid nitrogen is controlled below the corresponding methane liquefaction temperature under the process condition, the methane gas in the gas-liquid mixture is completely condensed into methane liquid, and finally high-purity liquid methane is obtained above the partition plate 10 of the lower condensation evaporator 6, is piped to a liquid methane tank 22. Other nitrogen, hydrogen and oxygen which are not condensed and liquefied in the gas-liquid mixture and part of nitrogen gasified by liquid nitrogen are discharged into a mixed gas output pipeline 21 from the first heat exchanger 8, wherein one part of the nitrogen is discharged, and the rest part of the nitrogen flows into an electric heater 24 to be heated and then carries out activation and regeneration on the adsorption tower in a saturated state, thereby realizing continuous work of the molecular sieve adsorption unit by circulation.
The cold source and the heat source required in the process of extracting liquid methane by low-temperature rectification are both provided by a nitrogen refrigeration cycle unit, nitrogen enters a nitrogen compressor 12 from a nitrogen pressure stabilizing tank 11, is compressed to a specified pressure and then sequentially enters a cooler 13 and a nitrogen heat exchanger 14, most of the nitrogen is pumped out and sent to an expander 18 for expansion refrigeration after being cooled to a specified temperature in the nitrogen heat exchanger 14, the nitrogen after the expansion refrigeration is divided into two paths according to the proportion, wherein one path returns to the nitrogen heat exchanger 14, and the other path enters a main heat exchanger 7 for cooling purified pure gas; the rest part of the nitrogen which does not enter the expander 18 is cooled to a saturated state in the nitrogen heat exchanger 14, the saturated nitrogen is divided into two paths according to the proportion, one path is used as a heat source, part of the heat source is condensed into liquid to enter the gas-liquid separator 15, the other path of the saturated nitrogen directly enters the gas-liquid separator 15 to be converged with the liquid nitrogen, the gas phase nitrogen which is not liquefied in the gas-liquid separator 15 is mixed with the expanded nitrogen and is distributed according to the proportion, the gas phase nitrogen and the expanded nitrogen respectively enter the nitrogen heat exchanger 14 and the main heat exchanger 7 to be recycled, and then return to the nitrogen pressure stabilizing tank 11, and the liquid nitrogen of the gas-liquid separator 15 returns to the upper condensation evaporator 4 to be used as a. Although the nitrogen in the system is recycled, the nitrogen can be leaked and lost in long-term operation and can be supplemented according to the actual working condition. The proportional distribution of the gases in the apparatus is controlled by a controller.
Claims (7)
1. A device for purifying methane liquid from purified landfill gas is characterized in that: the device comprises a pretreatment unit, a molecular sieve adsorption unit, a main heat exchanger, a low-temperature rectifying tower, a nitrogen refrigeration cycle unit and a controller; wherein,
the pretreatment unit comprises a landfill gas pressure stabilizing tank and a landfill gas compressor which are sequentially connected;
the molecular sieve adsorption unit is composed of a plurality of parallel adsorption towers for adsorbing carbon dioxide and water in the landfill gas, and the tower bottom of the adsorption tower is communicated with a landfill gas compressor in the pretreatment unit;
the low-temperature rectifying tower consists of an upper condensing evaporator, a packed rectifying tower body and a lower condensing evaporator;
the nitrogen refrigeration cycle unit is communicated with the main heat exchanger;
one end of the main heat exchanger is communicated with the top of the molecular sieve adsorption unit adsorption tower, and the other end of the main heat exchanger is communicated with the upper condensation evaporator and the packed rectifying tower body in the low-temperature rectifying tower.
2. The apparatus for purifying methane liquid from a purified landfill gas of claim 1, wherein: a first heat exchanger is arranged in the upper condensation evaporator, a second heat exchanger and a partition plate for separating liquid nitrogen from liquid methane are arranged in the lower condensation evaporator; the nitrogen refrigeration cycle unit consists of a nitrogen pressure stabilizing tank, a nitrogen compressor, a cooler, a nitrogen heat exchanger and a gas-liquid separator which form a loop, wherein a nitrogen output pipe and a nitrogen input pipe are arranged in the nitrogen heat exchanger, an expander is arranged between the nitrogen input pipe and the nitrogen output pipe, and a brake for controlling the rotating speed of the expander is connected to the expander; an input pipeline, a single gas output pipeline and a mixed gas output pipeline are arranged in the main heat exchanger, the input end of the single gas output pipeline is communicated with the nitrogen output pipe, the output end of the single gas output pipeline is communicated with the nitrogen pressure stabilizing tank, the input end of the input pipeline is communicated with the top of the adsorption tower, the output end of the input pipeline is communicated with the packed rectifying tower body, the input end of the mixed gas output pipeline is communicated with the top end of the first heat exchanger, and the output end of the mixed gas output pipeline is communicated with; the gas-liquid separator is respectively communicated with the bottom end of the lower condensation evaporator and the side part of the upper condensation evaporator, and the side part of the lower condensation evaporator is communicated with the nitrogen input pipe.
3. The apparatus for purifying methane liquid from a purified landfill gas of claim 1, wherein: the molecular sieve adsorption unit consists of an adsorption tower and a first program control valve assembly connected between the adsorption tower and a pipeline, and the opening and closing of a valve are realized by a controller.
4. The apparatus for purifying methane liquid from a purified landfill gas of claim 2, wherein: and a liquid methane tank is communicated with a position for containing liquid methane in the lower condensation evaporator.
5. The apparatus for purifying methane liquid from a purified landfill gas of claim 2, wherein: and a filter for filtering dust in the gas-liquid mixture is arranged between the input end of the input pipeline and the adsorption tower.
6. The apparatus for purifying methane liquid from a purified landfill gas of claim 2, wherein: an electric heater is arranged between the output end of the mixed gas output pipeline and the adsorption tower.
7. The apparatus for purifying methane liquid from a purified landfill gas of claim 6, wherein: and a mixed gas output pipeline between the main heat exchanger and the electric heater, a nitrogen input pipe between the gas-liquid separator and the nitrogen heat exchanger, a pipeline communicated with the bottom end of the lower condensation evaporator through the gas-liquid separator, a pipeline communicated with the upper condensation evaporator through the gas-liquid separator, a pipeline communicated with the side part of the lower condensation evaporator through the nitrogen input pipe, a pipeline communicated with the single gas output pipeline through the nitrogen output pipe, and a pipeline communicated with the packed rectifying tower body through the input pipeline are respectively provided with a second program control valve component, and the opening and closing of the valve are realized through a controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320436475.6U CN203443264U (en) | 2013-07-18 | 2013-07-18 | Device for extracting methane liquid from purified garbage landfill gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320436475.6U CN203443264U (en) | 2013-07-18 | 2013-07-18 | Device for extracting methane liquid from purified garbage landfill gas |
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| Publication Number | Publication Date |
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| CN203443264U true CN203443264U (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320436475.6U Expired - Lifetime CN203443264U (en) | 2013-07-18 | 2013-07-18 | Device for extracting methane liquid from purified garbage landfill gas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353207A (en) * | 2013-07-18 | 2013-10-16 | 杭州凯德空分设备有限公司 | Device for purifying methane liquid from purified landfill gas |
| CN108046972A (en) * | 2017-12-18 | 2018-05-18 | 合肥海川石化设备有限公司 | A kind of novel high purity methane purifying plant |
| CN113262584A (en) * | 2021-06-25 | 2021-08-17 | 张文举 | Safety recovery equipment for gas leakage |
-
2013
- 2013-07-18 CN CN201320436475.6U patent/CN203443264U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353207A (en) * | 2013-07-18 | 2013-10-16 | 杭州凯德空分设备有限公司 | Device for purifying methane liquid from purified landfill gas |
| CN103353207B (en) * | 2013-07-18 | 2015-02-25 | 杭州凯德空分设备有限公司 | Device for purifying methane liquid from purified landfill gas |
| CN108046972A (en) * | 2017-12-18 | 2018-05-18 | 合肥海川石化设备有限公司 | A kind of novel high purity methane purifying plant |
| CN113262584A (en) * | 2021-06-25 | 2021-08-17 | 张文举 | Safety recovery equipment for gas leakage |
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