CN206736194U - A kind of methane purification system - Google Patents
A kind of methane purification system Download PDFInfo
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- CN206736194U CN206736194U CN201720192946.1U CN201720192946U CN206736194U CN 206736194 U CN206736194 U CN 206736194U CN 201720192946 U CN201720192946 U CN 201720192946U CN 206736194 U CN206736194 U CN 206736194U
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Abstract
A kind of methane purification system is the utility model is related to, it includes：The roots blower being sequentially connected, grade one filter, surge tank, force (forcing) pump, water scrubber, moisture trap, desulfurizer, spark arrester, decarbonization device, dehydrohalogenation device, denitrogenation oxygen device, stage compressor, freezing type drier, secondary filter, split-compressor, carbon dioxide heat-pump, tertiary filter, primary heater, level Four filter, one-level film group, secondary heater, Pyatyi filter, secondary membrane group, natural gas storage tank, CNG compressors, caisson；The outlet of the entrance and anaerobic reaction-pot of the roots blower connects；The caisson is connected with filling machine and/or aerating post.System of the present utility model realizes carries out purification processing with relatively low investment and operating cost, better simply control to biogas, the output gas after processing is met the requirement of vehicle fuel standard.
Description
Technical field
The utility model belongs to field of renewable energy resource utilization, particularly a kind of natural pond by methane purification to natural gas used for automobile
Gas purification system.
Background technology
At present, at home and abroad have than broader application using Anaerobic Digestion technical finesse organic garbage of city,
Particularly in Europe, larger development is obtained with the method processing organic waste of anaerobic digestion, in Japan and South Korea, anaerobic digestion
Processing kitchen garbage has also obtained faster development.Organic garbage of city produces biogas by anaerobic digestion, obtains reproducible
The energy, realize the recycling of debirs.
The main component of biogas is methane (50%~70%) and carbon dioxide (25~45%), and remaining is a small amount of nitrogen
Gas, hydrogen sulfide, ammonia, VOCs and vapor, the vehicular compressed natural of national standard can be met after purified purification
Gas (GB18047-2000), alternative conventional gas is as vehicle-mounted natural gas motorcar, however, the domestic biogas heat in China at present
Value and purity are low, and Purification is not yet carried out on a large scale, and biogas only uses as rural area kitchen range fuel, and purposes is few, use value
Low, even if there is methane purification, also simply simple purifying plant, the biogas after purification are difficult to meet national standard.
The content of the invention
Technology of the present utility model solves problem：Overcome the deficiencies in the prior art, propose a kind of methane purification to automobile-used
The methane purification system of natural gas.
Technical solution of the present utility model is：A kind of methane purification system, including：The roots blower being sequentially connected,
Grade one filter, surge tank, force (forcing) pump, water scrubber, moisture trap, desulfurizer, spark arrester, decarbonization device, dehydrohalogenation
Device, denitrogenation oxygen device, stage compressor, freezing type drier, secondary filter, split-compressor, carbon dioxide heat-pump, three
Level filter, primary heater, level Four filter, one-level film group, secondary heater, Pyatyi filter, secondary membrane group, natural gas
Storage tank, CNG compressors, caisson；The outlet of the entrance and anaerobic reaction-pot of the roots blower connects；The caisson
It is connected with filling machine and/or aerating post.
Further, the carbon dioxide heat-pump includes the carbon-dioxide gas compressor that circulation is sequentially connected, condenser, expansion
Valve and regenerator.
Further, described system includes heat exchanger, and carbon dioxide working medium and the one-level of the carbon dioxide heat-pump add
The cooling backwater of hot device and secondary heater is exchanged heat by the heat exchanger.
Further, the grade one filter is particulate filter, and the secondary filter is coalescing filter, described
Tertiary filter is water absorbing filter, and the level Four filter and Pyatyi filter are oil water separation filtering.
Further, the stage compressor and split-compressor are Marsh gas compression machine.
Further, the one-level film group and secondary membrane group are CH4/CO2Seperation film.
Further, it is provided with odorization machine on the pipeline between the CNG compressors and caisson.
Further, the system includes the first CO2Air accumulator and the 2nd CO2Air accumulator, the CH of the one-level film group4Ooze
Appear mouth and CO2Infiltration exports the entrance and the first CO with secondary heater respectively2Air accumulator entrance connects, the secondary membrane group
CH4Infiltration outlet and CO2Infiltration exports the entrance and the 2nd CO with natural gas storage tank respectively2Air accumulator entrance connects.
The utility model compared with prior art the advantages of be：
Pass through the desulfurizer that sets in systems, moisture trap, Marsh gas compression machine, cooling driers, one-level film group, two level
The devices such as film group, Marsh gas compression machine coordinate to be handled biogas successively, ensure that the height in the gas of final output after handling
Position calorific capacity, total sulfur, H2S、CO2、O2, the index such as water dew point reach the standard of vehicle fuel.Realize with relatively low investment and fortune
Row cost, better simply control carry out purification processing to biogas, the output gas after processing is met vehicle fuel mark
Alignment request.
Brief description of the drawings
Fig. 1 is the schematic diagram of methane purification system of the present utility model.
Fig. 2 is the schematic diagram of the carbon dioxide heat-pump of methane purification system of the present utility model.
Embodiment
As shown in Figure 1-2, a kind of methane purification system, including：The roots blower being sequentially connected, particulate filter, buffering
Tank, force (forcing) pump, water scrubber, moisture trap, desulfurizer, spark arrester, decarbonization device, dehydrohalogenation device, denitrogenation oxygen device,
Stage compressor, freezing type drier, coalescing filter, split-compressor, carbon dioxide heat-pump, water absorbing filter, one-level
Heater, level Four filter, one-level film group, secondary heater, Pyatyi filter, secondary membrane group, natural gas storage tank, CNG compressions
Machine, caisson；The outlet of the entrance and anaerobic reaction-pot of the roots blower connects；The caisson and filling machine and/
Or aerating post connection.
Wherein, roots blower：For extracting the biogas of anaerobic reaction-pot out；Particulate filter：For removing in biogas
Grain thing；Surge tank：For entering row buffering to biogas；Force (forcing) pump：For the biogas pressurization for exporting surge tank, subsequent purification is completed
Technique；Water scrubber：For impurity such as the carbon dioxide in initial absorption biogas, hydrogen sulfide；Moisture trap：For being taken off to biogas
Water；Desulfurizer：For further removing the sulfide in biogas；Spark arrester：For preventing and treating the reverse biography of flame in the duct
Broadcast；Decarbonization device：For further removing the carbide in biogas；Dehydrohalogenation device：For removing the hydrogen halides in biogas；
Denitrogenation oxygen device：For removing the nitrogen oxides in biogas；Stage compressor：For improving gas pressure, subsequent purification is completed
Technique；Freezing type drier：For further to gas dewatering；Secondary filter：For carrying out de-oiling, dehydration to gas；Two
Level compressor：For improving gas pressure, follow-up purifying technique is completed；Carbon dioxide heat-pump：Go out for cooling down split-compressor
The gas of mouth, realize further dehydration；Tertiary filter：Further absorb the moisture in gas；Primary heater：Improve gas
Temperature and pressure, in case follow-up de-oiling process；Level Four filter：De-oiling further is carried out to gas；One-level film group：Further
Remove the carbon dioxide in gas；Secondary heater：For improving gas temperature and pressure, in case follow-up further de-oiling work
Sequence；Pyatyi filter：Realize the de-oiling to gas；Secondary membrane group：Realize the removal of carbon dioxide in gas；Natural gas storage tank：
Natural gas after storage purification；CNG compressors：Natural gas is pressurizeed, is easy to store；Caisson；For natural gas
Storage.
Preferably, the carbon dioxide heat-pump includes the carbon-dioxide gas compressor that circulation is sequentially connected, condenser, expansion valve
And regenerator.
Preferably, the methane purification system includes heat exchanger, the carbon dioxide working medium and one of the carbon dioxide heat-pump
The cooling backwater of level heater and secondary heater is exchanged heat by the heat exchanger, by setting heat exchanger, realizes carbon dioxide
The carbon dioxide working medium of heat pump and the heat exchange of primary heater and the cooling backwater of secondary heater, take full advantage of two-stage compression
The problem of machine exit gas, save the energy.
Preferably, the level Four filter and Pyatyi filter are oil water separation filtering.
Preferably, the stage compressor and split-compressor are Marsh gas compression machine.
Preferably, the one-level film group and secondary membrane group are CH4/CO2Seperation film.
Preferably, it is provided with odorization machine on the pipeline between the CNG compressors and caisson.
Preferably, the methane purification system includes the first CO2Air accumulator and the 2nd CO2Air accumulator, the one-level film group
CH4Infiltration outlet and CO2Infiltration exports the entrance and the first CO with secondary heater respectively2Air accumulator entrance connects, the two level
The CH of film group4Infiltration outlet and CO2Infiltration exports the entrance and the 2nd CO with natural gas storage tank respectively2Air accumulator entrance connects, and leads to
Cross and the first CO is set2Air accumulator and the 2nd CO2, realize CO2Collection, both avoid CO2Air increase greenhouse effects are discharged into,
Gas sampling recycling is realized again.
Preferably, filling machine and/or aerating post are connected after the caisson, so as to realizing to natural gas commerial vehicle
Aerating and/or be CNG tank car gas injections.
When handling purifying biogas using methane purification system of the present utility model, biogas is by roots blower from anaerobic reaction-pot
After middle extraction, surge tank buffering is entered after particulate filter filters particulate matter, biogas passes through force (forcing) pump from surge tank outlet
Pass through water scrubber, moisture trap, desulfurizer, spark arrester, decarbonization device, dehydrohalogenation device, denitrogenation oxygen after pressurization successively
Device realizes the removal of the impurity such as carbide, sulfide, hydrogen halides；The gas for removing related impurities passes sequentially through one stage of compression
Machine, freezing type drier, secondary filter, split-compressor, carbon dioxide heat-pump, tertiary filter, primary heater, level Four
Filter, one-level film group, secondary heater, Pyatyi filter, secondary membrane group enter naturally after realizing dehydration and carbon dioxide removal
Gas storage tank, the natural gas of natural gas storage tank outlet is by CNG compressors high pressure compressed and by entering after odorization machine injection foul smell
Caisson is for the aerating of natural gas commerial vehicle and/or is CNG tank car gas injections.
In the process, the carbon dioxide that one-level film group and secondary membrane group separate out, which enters in carbon dioxide air accumulator, to be stored.
The workflow of the carbon dioxide heat-pump of methane purification system of the present utility model is as follows：Through carbon-dioxide gas compressor
HTHP carbon dioxide after compression forms cryogenic high pressure carbon dioxide after entering condenser heat exchange；The cryogenic high pressure dioxy
Change carbon and form low-temp low-pressure carbon dioxide by the expansion valve, the low-temp low-pressure carbon dioxide exchanges heat into regenerator, shape
Into high-temperature low-pressure carbon dioxide, the high-temperature low-pressure carbon dioxide enters carbon-dioxide gas compressor, forms HTHP titanium dioxide
Carbon, the gas of split-compressor outlet realize cooling by the regenerator of carbon dioxide heat-pump with low-temperature carbon dioxide heat exchange, with
Just the precipitation of aqueous water, the condenser connect with the heat exchanger, realize low temperature high temperature carbon dioxide and primary heater and
The cooling backwater heat exchange of secondary heater.
The content not being described in detail in the utility model specification belongs to the known technology of professional and technical personnel in the field.
Claims (8)
- A kind of 1. methane purification system, it is characterised in that including：The roots blower being sequentially connected, grade one filter, surge tank, Force (forcing) pump, water scrubber, moisture trap, desulfurizer, spark arrester, decarbonization device, dehydrohalogenation device, denitrogenation oxygen device, one Level compressor, freezing type drier, secondary filter, split-compressor, carbon dioxide heat-pump, tertiary filter, one-level heating Device, level Four filter, one-level film group, secondary heater, Pyatyi filter, secondary membrane group, natural gas storage tank, CNG compressors, storage Device of air；The outlet of the entrance and anaerobic reaction-pot of the roots blower connects；The caisson and filling machine and/or aerating Post connects.
- 2. system according to claim 1, it is characterised in that：The carbon dioxide heat-pump includes two that circulation is sequentially connected Carbonoxide compressor, condenser, expansion valve and regenerator.
- 3. system according to claim 1, it is characterised in that：Including heat exchanger, the titanium dioxide of the carbon dioxide heat-pump Carbon working medium is exchanged heat with the cooling backwater of primary heater and secondary heater by the heat exchanger.
- 4. system according to claim 1, it is characterised in that：The grade one filter is particulate filter, the two level Filter is coalescing filter, and the tertiary filter is water absorbing filter, and the level Four filter and Pyatyi filter are equal For oil water separation filtering.
- 5. system according to claim 1, it is characterised in that：The stage compressor and split-compressor are biogas pressure Contracting machine.
- 6. system according to claim 1, it is characterised in that：The one-level film group and secondary membrane group are CH4/CO2Separation Film.
- 7. system according to claim 1, it is characterised in that：On pipeline between the CNG compressors and caisson It is provided with odorization machine.
- 8. system according to claim 6, it is characterised in that：Including the first CO2Air accumulator and the 2nd CO2Air accumulator, it is described The CH of one-level film group4Infiltration outlet and CO2Infiltration exports the entrance and the first CO with secondary heater respectively2Air accumulator entrance connects It is logical, the CH of the secondary membrane group4Infiltration outlet and CO2Infiltration exports the entrance and the 2nd CO with natural gas storage tank respectively2Air accumulator Entrance connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720192946.1U CN206736194U (en) | 2017-03-01 | 2017-03-01 | A kind of methane purification system |
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| CN201720192946.1U CN206736194U (en) | 2017-03-01 | 2017-03-01 | A kind of methane purification system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108676700A (en) * | 2018-07-12 | 2018-10-19 | 甘肃驰奈生物能源系统有限公司 | A kind of form anaerobic fermentation methane dewatering |
| 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 |
| CN109401804A (en) * | 2018-12-08 | 2019-03-01 | 内蒙古弘达生物环保科技有限责任公司 | A kind of methane purification system with peak regulating function |
| CN111961509A (en) * | 2020-08-18 | 2020-11-20 | 北京中持绿色能源环境技术有限公司 | Biogas membrane purification system and method |
-
2017
- 2017-03-01 CN CN201720192946.1U patent/CN206736194U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108676700A (en) * | 2018-07-12 | 2018-10-19 | 甘肃驰奈生物能源系统有限公司 | A kind of form anaerobic fermentation methane dewatering |
| 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 |
| CN109401804A (en) * | 2018-12-08 | 2019-03-01 | 内蒙古弘达生物环保科技有限责任公司 | A kind of methane purification system with peak regulating function |
| CN111961509A (en) * | 2020-08-18 | 2020-11-20 | 北京中持绿色能源环境技术有限公司 | Biogas membrane purification system and method |
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