CN101949633A - Vehicle-mounted methane freezing, liquefying and separating device - Google Patents
Vehicle-mounted methane freezing, liquefying and separating device Download PDFInfo
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- CN101949633A CN101949633A CN2010102819387A CN201010281938A CN101949633A CN 101949633 A CN101949633 A CN 101949633A CN 2010102819387 A CN2010102819387 A CN 2010102819387A CN 201010281938 A CN201010281938 A CN 201010281938A CN 101949633 A CN101949633 A CN 101949633A
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- storehouse
- gas
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- liquid separation
- freezing
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- 238000007710 freezing Methods 0.000 title claims abstract description 130
- 230000008014 freezing Effects 0.000 title claims abstract description 130
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 103
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 268
- 239000007788 liquid Substances 0.000 claims abstract description 175
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 131
- 238000003860 storage Methods 0.000 claims abstract description 55
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 52
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 26
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 230000006835 compression Effects 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims abstract description 9
- 238000000926 separation method Methods 0.000 claims description 136
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 16
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 16
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 7
- 230000008676 import Effects 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 3
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 16
- 230000008901 benefit Effects 0.000 abstract description 12
- 239000002994 raw material Substances 0.000 abstract description 12
- 238000011161 development Methods 0.000 abstract description 7
- 239000010902 straw Substances 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 239000006227 byproduct Substances 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000008961 swelling Effects 0.000 abstract 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 13
- 239000012530 fluid Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 239000010815 organic waste Substances 0.000 description 10
- 238000001802 infusion Methods 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000010248 power generation Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000018109 developmental process Effects 0.000 description 6
- 230000005611 electricity Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 239000003345 natural gas Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000003225 biodiesel Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
- F25J1/0022—Hydrocarbons, e.g. natural gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
- F25J1/0027—Oxides of carbon, e.g. CO2
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
- F25J1/007—Primary atmospheric gases, mixtures thereof
- F25J1/0072—Nitrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
- F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
- F25J1/0275—Construction and layout of liquefaction equipments, e.g. valves, machines adapted for special use of the liquefaction unit, e.g. portable or transportable devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
- F25J1/0279—Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc.
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
- F25J5/002—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants for continuously recuperating cold, i.e. in a so-called recuperative heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2210/00—Processes characterised by the type or other details of the feed stream
- F25J2210/66—Landfill or fermentation off-gas, e.g. "Bio-gas"
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2220/00—Processes or apparatus involving steps for the removal of impurities
- F25J2220/60—Separating impurities from natural gas, e.g. mercury, cyclic hydrocarbons
- F25J2220/66—Separating acid gases, e.g. CO2, SO2, H2S or RSH
-
- 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
Abstract
The invention relates to a vehicle-mounted methane freezing, liquefying and separating device which comprises a nitrogen compressor, a condenser, a compressed nitrogen storage pot and a nitrogen swelling, freezing and separating cabin. The device is characterized in that the nitrogen compressor, the condenser, the compressed nitrogen storage pot and the nitrogen swelling, freezing and separating cabin are uniformly arranged on a truck, wherein the nitrogen swelling, freezing and separating cabin is respectively provided with a methane inlet and a water outlet and respectively communicated with a normal pressure nitrogen storage bag, the compressed nitrogen storage pot, a liquefied and vulcanized hydrogen storage pot, a liquid methane storage pot and a liquid carbon dioxide storage pot; the normal pressure nitrogen storage bag is communicated with the compressed nitrogen storage pot through a nitrogen compression device via a cooler; and the nitrogen compressor is connected with a methane generator through a gear box. The device has the advantages of flexibility, light weight, convenience, movability and convenient running, reduces the transportation cost and the power cost of straw raw materials and methane dreg waste and can be used for recovering carbon dioxide and realizing low-carbon agricultural development. Moreover, the device increases the side product income of methane processing and also has the advantages of income increase, energy saving and environmental protection.
Description
Technical field
The present invention relates to a kind of vehicle-mounted type biogas cryogenic liquefaction separator, specifically is to move to the biogas place of production with car, on the spot that biogas is freezing, purify, separate the device of output liquid carbon dioxide and liquefied methane (LNG).
Background technology
Current, biomass energy overdevelopment tidal height rises, and has formed several big important development directions such as biodiesel, Aalcohols fuel, biogas.Biodiesel and alcohols mainly are to utilize vegetable seeds grease or stem stalk sugar to extract, and finally all will meet with raw material planting and lack this impassable predicament of soil.If the situation on ground certainly will appear striving with existing industry in extensive the development.And crop straw burning generating, stalk cracking and cellulosic ethanol equal energy source method for transformation require agriculture and forestry organic waste material to focus on a large scale.In actual production, exist stalk resource to disperse, collect difficult problems such as difficulty is big, conevying efficiency is low, too concentrate season, infusion of financial resources is big, operating cost height.Therefore, make full use of the huge agricultural straw refuse of stock number, be converted into biogas, develop automobile-used biogas, can be directly used in motor vehicle fuel, technology maturation, easy and simple to handle, cost is lower, and combustion heat value is higher, and effect is better, more is hopeful extensive development.After marsh gas purifying was purified, main component is a methane, and was identical with natural gas.Principle and natural gas that biogas is driven are in full accord.And present stalk marsh gas transformation technology is quite ripe.Some countries popularize as Sweden in Northern Europe to adopt biogas to drive a car in the world.The China's natural gas automobile is promoted, is popularized in many areas, for good basis has been established in the biogas driving.
But the agricultural straw refuse transforms automobile-used biogas, equally also will transform a serial difficult problem in the face of the scale that stalk resource disperses to be brought.Focus on agriculture and forestry organic waste material on a large scale, develop large-scale intensification plant produced, have many limitation.Therefore, the invention of " the large-scale industrialization integrated treatment of a kind of plant stem-leaf and utilize method and device (CN101724695A) ", changed the mode of extensive intensification, with the principle of disperseing to handle on the spot, the agriculture and forestry organic waste material original place is transformed biogas, adopt pipe network system, collect, carry the biogas that needs to processing factory, the natural pond slag is then gone back the field on the spot as fertilizer, change inefficient transportation raw material and waste material form in enormous quantities, adopt the pipeline of convenient efficient easily row to carry semi-finished product gas, thereby realize the method for the automobile-used biogas of low-cost high-efficiency large-scale production.In practice, though it is lower than setting up locomotive transport team cost to set up the pipe network system input cost, pipe network is safeguarded and is still a difficult problem.If further change thinking, develop the biogas liquefied separator of a kind of vehicle-mounted type, can move with car, at source freezing on the spot, liquefaction, separation, purification, can, a then above-mentioned serial difficult problem can be readily solved.
Summary of the invention
The objective of the invention is to: utilize the agricultural straw refuse to be converted into automobile-used biogas in order to overcome scale on a large scale; the resource that is faced is disperseed, the collection difficulty is big, conevying efficiency is low, too concentrate season, infusion of financial resources is big, the high serial difficult problem of operating cost; a kind of vehicle-mounted type biogas cryogenic liquefaction separator is provided; it is with the biogas that the agriculture and forestry organic waste material original place transforms, and processing is the method and the device thereof of automobile-used biogas on the spot.It has and can shift with car, and is light flexibly, not limited by the place, can turn round everywhere, and low-cost high-efficiency ground is freezing with biogas on the spot, purify, separate the advantage of the automobile-used biogas of output.Simultaneously, can also reclaim in the biogas purification process, the liquid carbon dioxide byproduct of generation, increase industry income on vast field, is converted into automobile-used biogas with the agriculture and forestry organic waste material that disperses, and creates favourable technical support and appointed condition efficiently.
Technical scheme of the present invention is: a kind of vehicle-mounted type biogas cryogenic liquefaction separator, comprise: nitrogen compressor, condensate liquid device, compressed nitrogen air accumulator, the freezing separation bin of nitrogen expansion, described device all is arranged on the truck, the freezing separation bin of described nitrogen expansion is provided with biogas import, water out respectively, and the freezing separation bin of nitrogen expansion is communicated with normal pressure nitrogen storage bag, compressed nitrogen air accumulator, co 2 liquefaction storage tank, liquid methane storage tank, liquid hydrogen sulfide storage tank respectively; Described normal pressure nitrogen storage bag is communicated with the compressed nitrogen air accumulator by the nitrogen pressure compression apparatus through cooler, and described nitrogen compressor connects biogas generator by gearbox.
The freezing separation bin of described nitrogen expansion is made of the freezing gas-liquid separation of normal temperature storehouse, withstand voltage freezing gas-liquid separation storehouse, cryogenic freezing gas-liquid separation storehouse, superfreeze gas-liquid separation storehouse, the freezing gas-liquid separation of described normal temperature storehouse is provided with biogas import, water out respectively, and two-way is divided in the freezing gas-liquid separation of normal temperature storehouse: the one tunnel: be communicated with normal pressure nitrogen storage bag by blower fan; Two the tunnel: be communicated with withstand voltage freezing gas-liquid separation storehouse, withstand voltage freezing gas-liquid separation storehouse divides three the tunnel: the one tunnel: be communicated with normal pressure nitrogen storage bag by blower fan; Two the tunnel: be communicated with the liquid hydrogen sulfide storage tank; Three the tunnel: be communicated with cryogenic freezing gas-liquid separation storehouse; Cryogenic freezing gas-liquid separation storehouse divides three the tunnel: the one tunnel: be communicated with normal pressure nitrogen storage bag by blower fan; Two the tunnel: be communicated with the liquefied carbon dioxide storage tank; Three the tunnel: be communicated with superfreeze gas-liquid separation storehouse, superfreeze gas-liquid separation storehouse divides three the tunnel: the one tunnel: be communicated with normal pressure nitrogen storage bag by blower fan; Two the tunnel: be communicated with the liquid methane storage tank, the fuel purifying tracheae in described superfreeze gas-liquid separation storehouse is communicated with the connecting leg between superfreeze gas-liquid separation storehouse and the cryogenic freezing gas-liquid separation storehouse; Described normal pressure nitrogen storage bag is communicated with the compressed nitrogen air accumulator by compression set, and the compressed nitrogen air accumulator is communicated with the freezing gas-liquid separation of normal temperature storehouse, withstand voltage freezing gas-liquid separation storehouse, cryogenic freezing gas-liquid separation storehouse, superfreeze gas-liquid separation storehouse respectively.
The freezing gas-liquid separation of described normal temperature storehouse, withstand voltage freezing gas-liquid separation storehouse, cryogenic freezing gas-liquid separation storehouse, the identical freezing separation bin of horizontal nitrogen expansion that is referred to as of superfreeze gas-liquid separation storehouse internal structure, the freezing separation bin of described horizontal nitrogen expansion is by the housing of long tubular, housing is provided with thermal insulation layer, the middle and upper part is provided with the U type heat exchanger tube of vertical arrangement in housing, and fix by at least one U type pipe fixed head up and down, evenly be arranged alternately compressed nitrogen by hole and U type heat exchanger tube on the described U type pipe fixed head, this district is the nitrogen expansion storehouse; Described connect in bottom, nitrogen expansion storehouse vertically arrange store up the storehouse dividing plate, with storing up storehouse the lower partition barrel the gap is set, this district stores up the storehouse for liquid; The biogas pipeline of connection respectively in described nitrogen expansion storehouse, compressed nitrogen air inlet, liquid outlet normal pressure nitrogen gas outlet, its normal pressure nitrogen gas outlet is arranged on housing top; Liquid outlet is arranged on housing bottom.
Between the described pipeline valve is set.
The freezing gas-liquid separation of described normal temperature storehouse, withstand voltage freezing gas-liquid separation storehouse, cryogenic freezing gas-liquid separation storehouse, superfreeze gas-liquid separation storehouse are provided with pressure gauge and thermometer respectively.
The present invention uses the nitrogen expansion Refrigeration Technique; Adopt " freezing of going forward one by one ", biogas is freezing, liquefaction, purify, separate; With vertical freezing equipment, change into horizontal, and self-contained or be divided on the truck; Unit adopts marsh gas power generation to drive.The biogas liquefied separator of described vehicle-mounted type, concrete feature is as follows:
1., adopt the nitrogen expansion Refrigeration Technique, in the nitrogen expansion storehouse, biogas is carried out freezing, liquefaction, purification, separating treatment.
2., adopt a pipe series connection expansion storehouse.Raw material biogas is in several expansion storehouses, and a pipe connects, and segmentation is gone forward one by one freezingly in each storehouse, and impurity such as steam, hydrogen sulfide, carbon dioxide in the refrigerating process that goes forward one by one, are progressively liquefied, separate.
3., with expansion storehouse, heat exchanger and gas-liquid separator integrated design, reduce U-shaped pipe height, increase pressure U shape tube quantity, it is horizontal that vertical gas-liquid separation device is become, and is beneficial to vehicle-mounted.
4., said apparatus is self-contained or be divided on the truck, carry out device and move, on the spot operation with car.
The freezing gas-liquid separation device of vehicle-mounted type biogas that the present invention proposes, its advantage is as follows:
1, nitrogen expansion cool chamber, heat exchanger and gas-liquid separator integrated setting, compression device takes up an area of the space dramatically, for device is realized vehicle-mounted creating conditions.
2, heat exchanger U type pipe, force down the height, accelerate, guaranteed the time of staying of biogas at the nitrogen expansion cool chamber, forced down device height again, make equipment from vertical become horizontal.Vehicle-mounted for the equipment realization, set up basic prerequisite.
3, adopting marsh gas power generation is power drive, even implement device in the remote area away from the power network line corridor, as long as the road is clear, does not need exterior power, also can move whenever and wherever possible.
4, simple in structure, cheap, simple to operation, save energy consumption, efficient is higher.
5, equipment moves with car, operation on the spot, and biogas is processed can be on wide field, the operation of any place makes automobile-used biogas industry exploitation, avoids serial difficult problems such as the collection of agricultural straw refuse, transportation, processing, be not subjected to the restriction of transportation radius, greatly expand the scope of utilizing of stalk.
6, vehicle-mounted type equipment, the huge freight volume of having avoided raw material input and waste residue to export only needs the transportation finished product, and conevying efficiency is high; Thereby avoided the stalk conevying efficiency low, collected the serial difficult problem of the big grade of difficulty, greatly reduced cost of transportation, improved industrial benefit.
7, biogas electric power, cost cuts down the consumption of energy; Avoid transporting for long-distance raw material and waste residue can be saved fleet and drop into, and cost reduces the freight.The advantage that these reduce cost makes biogas poor benefit industry become the viable industries that can get a profit.
In sum it have flexible, light, removable, just operation is a bit.The cost of transportation and the power cost of stalk and transportation natural pond slag refuse have been reduced.And, reclaim carbon dioxide, realize the low-carbon (LC) agricultural development, also increased biogas processed side product income, increase income in a word, energy-conservation environmental protection again.
Description of drawings
The total figure of the freezing separator structure of Fig. 1 vehicle-mounted type biogas;
The process chart of the biogas liquefied separator of Fig. 2 vehicle-mounted type;
The freezing separation bin structural map of the horizontal nitrogen expansion of Fig. 3;
The vertical A-A generalized section of the freezing separation bin of the horizontal nitrogen expansion of Fig. 4;
Fig. 5 is Fig. 4 A-A generalized section;
Fig. 6 is Fig. 4 B-B generalized section;
Fig. 7 is Fig. 4 C to schematic diagram:
Fig. 8 is the freezing gas-liquid separation of a horizontal nitrogen expansion storehouse cross section D-D cross sectional representation;
Vehicle-mounted self-contained figure of the freezing separation bin of Fig. 9 nitrogen expansion and biogas mask work flow chart.
The specific embodiment
Embodiment
A kind of vehicle-mounted type biogas cryogenic liquefaction separator, as shown in Figure 1, comprise: nitrogen compressor 5, biogas generator 2 normal pressure nitrogen storage bags 13, condensate liquid device 6, compressed nitrogen air accumulator 7, the freezing separation bin 8 of nitrogen expansion, the freezing separation bin 8 of nitrogen expansion is that biogas generator 2 drives nitrogen compressor 5 by gearbox 4, and nitrogen compressor 5 is communicated with compressed nitrogen air accumulator 7 through cooler 6; Described normal pressure nitrogen storage bag 13 is communicated with compressed nitrogen air accumulator 7 by nitrogen compressor 5 through cooler 6.Above-mentioned device all is arranged on the automobile, and described automobile adopts truck 1.Be convenient to mobile operational process like this.
The freezing separation bin 8 of described nitrogen expansion is made of the freezing gas-liquid separation of normal temperature storehouse 8.1, withstand voltage freezing gas-liquid separation storehouse 8.2, cryogenic freezing gas-liquid separation storehouse 8.3, superfreeze gas-liquid separation storehouse 8.4, the freezing gas-liquid separation of described normal temperature storehouse 8.1 is provided with biogas import 8-9, water out respectively, 8.1 fens two-way in the freezing gas-liquid separation of normal temperature storehouse: a tunnel: be communicated with normal pressure nitrogen storage bag 13 by blower fan; Two the tunnel: be communicated with withstand voltage freezing gas-liquid separation storehouse 8.2, withstand voltage freezing gas-liquid separation storehouse 8.2 minutes three tunnel: a tunnel: be communicated with normal pressure nitrogen storage bag 13 by blower fan; Two the tunnel: be communicated with liquid hydrogen sulfide storage tank 12.1; Three the tunnel: be communicated with cryogenic freezing gas-liquid separation storehouse 8.3; Cryogenic freezing gas-liquid separation storehouse 8.3 minutes three tunnel: one tunnel: be communicated with normal pressure nitrogen storage bag 13 by blower fan; Two the tunnel: be communicated with liquefied carbon dioxide storage tank 12.3; Three the tunnel: be communicated with superfreeze gas-liquid separation storehouse 8.4, superfreeze gas-liquid separation storehouse 8.4 minutes three tunnel: a tunnel: be communicated with normal pressure nitrogen storage bag 13 by blower fan; Two the tunnel: be communicated with liquid methane storage tank 12.2, the fuel purifying tracheae in described superfreeze gas-liquid separation storehouse 8.4 is communicated with the connecting leg between superfreeze gas-liquid separation storehouse 8.4 and the cryogenic freezing gas-liquid separation storehouse 8.3, the tail gas recycle circulating frozen is discharged outside the storehouse when the tail gas carbon monoxide after the purification, when oxygen concentration exceeds standard; Described normal pressure nitrogen storage bag 13 is communicated with compressed nitrogen air accumulator 7 by compression set, and compressed nitrogen air accumulator 7 is communicated with the freezing gas-liquid separation of normal temperature storehouse 8.1, withstand voltage freezing gas-liquid separation storehouse 8.2, cryogenic freezing gas-liquid separation storehouse 8.3, superfreeze gas-liquid separation storehouse 8.4 respectively.
The freezing gas-liquid separation of described normal temperature storehouse 8.1, withstand voltage freezing gas-liquid separation storehouse 8.2, cryogenic freezing gas-liquid separation storehouse 8.3, superfreeze gas-liquid separation storehouse 8.4 internal structures are identical, be referred to as the freezing separation bin of horizontal nitrogen expansion, extremely shown in Figure 8 as Fig. 3: by the housing of the long tubular of bulb, housing is provided with thermal insulation layer 8-4, the middle and upper part is provided with the U type heat exchanger tube 8-2 of vertical arrangement in housing, and fix down to two U type pipe fixed head 8-3 by last, described going up on the U type pipe fixed head 8-3a evenly is arranged alternately compressed nitrogen by hole and U type heat exchanger tube 8-2, heat exchanger effectiveness can improve like this for nitrogen expansion storehouse 8-1 in this district; Described nitrogen expansion storehouse 8-1 be connected with the bottom vertically arrange store up storehouse dividing plate 8-7, descended U type pipe fixed head 8-3b to separate; Store up dividing plate 8-7 bottom, storehouse barrel gap 8.8 is set, this district stores up storehouse 8-6 for liquid, is convenient to liquid flow like this; The biogas pipeline of the connection respectively 8-9 of described nitrogen expansion storehouse 8-1, compressed nitrogen air inlet 8-10, liquid outlet 8-13, normal pressure nitrogen gas outlet 8-11, its normal pressure nitrogen gas outlet 8-11 is arranged on housing top; Liquid outlet 8-13 is arranged on housing bottom.
The freezing separation bin of described horizontal nitrogen expansion is with cryogenic liquefaction and the gas-liquid separation design that is integrated, as shown in Figure 3.Its workflow is summarized as follows: compressed nitrogen advances the freezing separation bin 8 of horizontal nitrogen expansion from air inlet 8-10, in the expansion process, flows out from normal pressure nitrogen outlet 8-12 in the 8-1 of expansion storehouse, takes away the heat in the U type pipe in the expansion storehouse, gas in the cooling U-shaped pipe.After biogas flows into from biogas import 8-9, flow directly into bottom plate 8-3 underlay screen storehouse 8-7 by pipeline, in the dividing plate storehouse, be subjected to the liquid level restriction, as Fig. 4, shown in Figure 8, can only flow out by another circular hole of dividing plate storehouse bottom plate, enter another U type heat exchanger tube 8-2, flow to next dividing plate storehouse.So continuity by U type heat exchanger tube and dividing plate storehouse, is flowed out from biogas gas outlet 8-12 one by one at last.Biogas gas outlet 8-12 enters the freezing separation bin of next horizontal nitrogen expansion by compressor 10.
Described biogas passes through route such as Fig. 3 to (dotted line wherein and arrow are represented the flow through path and the direction of biogas) shown in Figure 8 between dividing plate storehouse and U type pipe.Condensed gas is in U type heat exchanger tube in the flow process; be filled in the expanding gas cooling of expansion storehouse 8-1; portion gas is condensed into liquid; with gas or flow into the dividing plate storehouse downwards; liquid is left on dividing plate storehouse 8-7, and gas continues to flow to next U type heat exchanger tube, so continuity; liquid is constantly separated, and stops amassing in the containing liquid chamber below bottom plate.Containing liquid chamber dividing plate lower end is a UNICOM, when fluid accumulation arrives q.s, can open valve and discharge.
Valve 15.1-15.4,16.1-16.4 are set between the described pipeline.
The freezing gas-liquid separation of described normal temperature storehouse 8.1, withstand voltage freezing gas-liquid separation storehouse 8.2, cryogenic freezing gas-liquid separation storehouse 8.3, superfreeze gas-liquid separation storehouse 8.4 are provided with pressure gauge and thermometer respectively.
Day to handle 5000Nm
3The biogas liquefied separator of the vehicle-mounted type of biogas is an example, produces automobile-used biogas 3000Nm daily
3, close 2151 kilograms, 184 liters of LNG (24 hours 3 classes fall duty) approximately per hour, 3954 kilograms of withdrawal liquid carbon dioxide.Described biogas liquefied separator is divided into three big main parts such as nitrogen compression cooling system, the freezing gas-liquid separation of nitrogen expansion storehouse, tank car, is loaded in respectively on three trucies, as shown in Figure 1.
Nitrogen compression cooling system is assembled on first truck 1.1, comprises 3,4 gearboxes 4 of cover 2,4 motors of marsh gas power generation unit; 4 cover 4L-20 piston compressors 5; 4 coolers 6, compressed nitrogen air accumulator 7, normal pressure nitrogen storage bag 13, pressure-resistant pipeline etc.
The freezing separation bin 8 of nitrogen expansion, be self-contained within on second truck 1.2, horizontal type level is placed, be divided into four bin levels, be respectively applied for the freezing gas-liquid separation of the separatory normal temperature of condensed water storehouse 8.1, the separatory withstand voltage freezing gas-liquid separation of liquid hydrogen sulfide storehouse 8.2, the separatory cryogenic freezing gas-liquid separation of liquid carbon dioxide storehouse 8.3 and the separatory superfreeze gas-liquid separation of liquid methane storehouse 8.4.Unstripped gas air inlet, the gas outlet in the freezing gas-liquid separation of each nitrogen expansion storehouse are by a pipe series connection, as shown in Figure 9.Wherein, between the freezing gas-liquid separation of normal temperature storehouse 8.1 and the withstand voltage freezing gas-liquid separation storehouse 8.2, pipeline links to each other by a compressor 10.And the compressed nitrogen air inlet is in parallel with compressed nitrogen air accumulator gas outlet by valve 11.1, valve 11.2, valve 11.3, valve 11.4 by four pipelines respectively, as shown in Figure 2.Normal pressure nitrogen gas outlet, then respectively by four pipelines, in parallel with normal pressure nitrogen storage airbag 13 by blower fan 9.1 blower fans 9.2, blower fan 9.3, blower fan 9.4.
Its workflow, as Fig. 2, it is shown in Figure 9 that (wherein dotted line and arrow are represented the flow through route and the direction of expansion nitrogen, realize representing the flow through route and the direction of biogas and product thereof), be summarized as follows: carry biogas continuously with the pipeline that thermal conductivity is good, the control flow, what enter successively that temperature reduces one by one is used for the freezing gas-liquid separation of the separatory normal temperature of condensed water storehouse 8.1, the separatory withstand voltage freezing gas-liquid separation of liquid hydrogen sulfide storehouse 8.2, the separatory cryogenic freezing gas-liquid separation of liquid carbon dioxide storehouse 8.3 and the separatory superfreeze gas-liquid separation of liquid methane storehouse 8.4.Pipeline is the revolution of U type pipe in the storehouse, to prolong duct length, increases the biogas time of staying and heat exchange area in the storehouse.When biogas entered the freezing gas-liquid separation of normal temperature storehouse 8.1, temperature was about 0 ℃, and steam condenses into aqueous water, removed from storehouse side row of conduits; The biogas of having removed steam enters compressor 10, makes air pressure rise to 1.5MPa to 3MPa, enters withstand voltage freezing gas-liquid separator 8.2 then, and temperature is discharged the hydrogen sulfide condensation liquefaction for keeping-0 ℃ from the side pipeline valve, reclaim; Remove the biogas of hydrogen sulfide, move on, enter cryogenic freezing gas-liquid separation storehouse 8.3, the 1.5MPa to 3MPa that keep-ups pressure, temperature is-10 ℃ to-30 ℃, and co 2 liquefaction is discharged from the side pipeline, reclaims; Purified marsh gas, main component is a methane, reaches national natural gas standard, continue to flow into superfreeze gas-liquid separation storehouse 8.4, temperature is reduced to-82.6 ℃ to-162 ℃, and compressed machine 17 pressure are adjusted into 0MPa to 4.60MPa methane liquefaction, adiabatic methane (LNG) storage tank of packing into is produced LNG.
Described the 3rd is tank car 1.3, for biogas liquefied products of separated stores and transporter.Liquid hydrogen sulfide fluid reservoir 12.1 wherein, liquid methane (LNG) storage tank 12.2, liquid carbon dioxide fluid reservoir 12.3 are anti-high pressure thermally insulated tank, and liquid hydrogen sulfide fluid reservoir 12.1, liquid methane (LNG) storage tank 12.2, liquid carbon dioxide fluid reservoir 12.3 are connected with low temperature infusion pump 11.1, low temperature infusion pump 11.3, the low temperature infusion pump 11.2 of second truck 1.2 by insulated piping respectively.
The course of work is as follows:
1, checks the compressed nitrogen air accumulator, should store up full compressed nitrogen;
2, three load bearing equipment vehicles in the biogas place of production, are selected smooth vacant lot, come to a complete stop on the spot, adjust horizontal attitude, are communicated with each pipeline, guarantee the pipeline firm and reliable connection, open normal pressure nitrogen storage airbag.
3,, be communicated with the raw material biogas air inlet in marsh gas power generation unit and the freezing gas-liquid separation of second chassis normal temperature storehouse 8.1 with raw material biogas storage jar;
4, regulate the freezing gas-liquid separation of each nitrogen expansion storehouse, control compressed nitrogen flow, the operating temperature of regulating the freezing gas-liquid separation of above-mentioned each nitrogen expansion storehouse;
5, the ignition trigger generating set 2,3,4 L-20 piston compressors 5 of starter motor, blower fan 9;
6, open the total valve 14 and the normal pressure nitrogen aspiration pump of compressed nitrogen air accumulator;
7, open the raw material biogas pipeline, adjust flow 15, start compressor 10;
8, biogas enters successively that temperature reduces one by one is used for the freezing gas-liquid separation of the separatory normal temperature of condensed water storehouse 8.1, the separatory withstand voltage freezing gas-liquid separation of liquid hydrogen sulfide storehouse 8.2, the separatory cryogenic freezing gas-liquid separation of liquid carbon dioxide storehouse 8.3 and the separatory superfreeze gas-liquid separation of liquid methane storehouse 8.4, as shown in Figure 9.Pipeline is the revolution of U type pipe in the storehouse, to increase duct length, prolongs biogas time of staying in the storehouse, enlarges heat exchange area.When biogas entered the freezing gas-liquid separation of normal temperature storehouse 8.1, temperature was about 0 ℃, and steam condenses into aqueous water, removed from storehouse side row of conduits; The biogas of having removed steam enters compressor 10, makes air pressure rise to 1.5Mpa to 3MPa, enters withstand voltage freezing gas-liquid separator 8.2 then, temperature is for keeping-0 ℃, with the hydrogen sulfide condensation liquefaction from the side liquid outlet, through low temperature infusion pump 11.1, send into fluid reservoir 12.1 by pipeline, reclaim; Remove the biogas of hydrogen sulfide, move on, enter cryogenic freezing gas-liquid separator 8.3, keep 1.5Mpa to 3MPa pressure, temperature is-10 ℃ to-30 ℃, with co 2 liquefaction from the side liquid outlet, through low temperature infusion pump 11.2,, reclaim by pipeline input fluid reservoir 12.3; Purified marsh gas, main component is a methane, reach national natural gas standard, continue to flow into superfreeze gas-liquid separator 8.4, temperature is reduced to-82.6 ℃ to-162 ℃ of methane liquefaction, and the compressed machine 17 of pressure is adjusted into 0MPa to 4.60MPa, through low temperature infusion pump 11.3, through pipeline input liquefied methane (LNG) storage tank 12.2, produce LNG.
9, the condensed water in the freezing gas-liquid separation of normal temperature storehouse 8.1 is directly discharged, and can be used for precooling raw material biogas; When withstand voltage freezing gas-liquid separation storehouse 8.2, the separatory cryogenic freezing gas-liquid separation of liquid carbon dioxide storehouse 8.3 and the separatory superfreeze liquid of liquid methane surpass predetermined fluid level, automatically discharge, and send into tank car by the low temperature infusion pump, enter corresponding liquid hydrogen sulfide fluid reservoir 12.1, liquid methane (LNG) storage tank 12.2, liquid carbon dioxide fluid reservoir 12.3.
10, the nitrogen after normal pressure nitrogen aspiration pump will expand is sent into normal pressure nitrogen storage airbag 13 and is stored, and is the refrigerant gas use of nitrogen compressor.
11, freezing when biogas, separate, produce finish after, continue to start nitrogen compressor, the nitrogen of gas-storing bag all is pressed into the compressed nitrogen air accumulator, use in order to producing next time.
The present invention adopts " the freezing gas-liquid separation device of horizontal nitrogen expansion ", has realized the vehicle-mounted pattern of biogas liquefied separator; Utilize " freezing of going forward one by one " to realize biogas liquefied product diversification, increase the product income, improved the biogas economic benefit of processing; Adopt the marsh gas power generation driving force, realized any ground on the wide field,, all can implement biogas processing even away from the high-tension line corridor.The freezing separator of vehicle-mounted type biogas that above principle is built has the following advantages:
(1), vehicle-mountedization of the freezing separator of biogas, realized that biogas processing is at the field mobile operational process, avoided being dispersed in the agriculture and forestry organic waste material on the wide farmland, serial difficult problems such as collection, transhipment, processing reduce significantly and set up transport column investment and agriculture and forestry organic waste material cost of transportation.
(2) biogas is processed the mode of production of at source handling on the spot, changed the poor efficiency mode of transportation discarded object raw material in enormous quantities and waste residue, be transformed into the high effective model of transportation finished product, by the stalk marsh gas conversion ratio is that 420L/kgTS calculates, its finished product cost of transportation only for 30.114% of transportation stalk dry, can reduce cost of transportation 70%.
(3), adopt marsh gas power generation to drive, not only avoid the biogas processing to be subjected to the restriction in electric wire corridor, can also reduce power cost significantly, by every 1.6kvI/Nm
3The marsh gas power generation rate, every Nm
30.5 yuan of biogas purchasing price, the electrical network price is calculated by 0.6 yuan/degree, and the electricity charge of 1.6kvI are 0.96 yuan.Be equivalent to every degree electricity charge and only be 0.3125 yuan, can save 0.2875 yuan.By the every processing of the freezing of going forward one by one 1Nm
3Biogas, produce 60% methane gas and 40% carbon dioxide and calculate: electricity consumption .5 * 60%+0.22 * 40%=0.388kvI, the processing electricity charge only are 0.151 yuan/Nm
3, can save 0.112 yuan/Nm of the electricity charge
3, power cost saves 47.91%.Day is handled 5000 tons device, and the Spring Festival holidays are economized 270,000 yuan of the electricity charge.Consume 1Nm
3Biogas, can process 4.12Nm
3Biogas, produce LNG 2.47Nm
3, reclaim carbon dioxide 1.65Nm
3
(4), adopt " freezing of going forward one by one " to separate biogas, except production accounts for 60% methane (LNG), also reclaim and account for 40% carbon dioxide.Its product income: methane gas is 0.6Nm
3, by 2.5 yuan/Nm
3Wholesale price is calculated, and is 1.5 yuan; Carbon dioxide is 0.4Nm
3,, be 0.3954 yuan by 500 yuan of/ton wholesale prices.Reclaim carbon dioxide revenue growth 26.36%, increase considerably biogas processing economic benefit.
In a word, the freezing separator of vehicle-mounted type biogas of the present invention is main advanced as follows:
1, flexible, light, removable, do not need exterior power to move.Thereby implement on the spot in the grown place for biogas processing, established equipment condition.Based on this, on the field of the length and breadth of land, as long as The coast is clear, even if raw material power network line corridor, the resource of agriculture and forestry organic waste material all can be utilized, and has enlarged agriculture and forestry organic waste material development and use spatial dimension to greatest extent.
2, vehicle-mountedization of the freezing separator of biogas changed agriculture and forestry organic waste material and produced biogas intensification mode, avoids transporting on a large scale the investment of the required establishment of stalk fleet, reduced the cost of transportation and the power cost of transportation stalk in enormous quantities and transportation natural pond slag refuse.
3, the freezing separator of vehicle-mounted type biogas changes the thinking that existing technology only reclaims methane, reclaims carbon dioxide simultaneously, not only realizes the low-carbon (LC) agricultural development, has also increased the byproduct income of biogas processing, and biogas secondary industry economic benefit is increased considerably.
4, above advance is pressed 2.5 yuan/Nm of methane
3, 500 yuan of/ton calculation of price of carbon dioxide, increase on the one hand biogas processing sell income 26.36%, operation power cost 47.91% of minimizing industry on the other hand and cost of transportation 70% make biogas processing profit from 0.03 yuan/Nm
3Be increased to 0.544 yuan/Nm
3, reversed this industry infeasible situation of economic benefit in the past.
5, reclaim carbon dioxide, be applied to modern installations agricultural gaseous fertilizer, not only can increase crop yield 70% to 90%, also dissolved the contradiction that agriculture low-carbon (LC) mode production requirement minimizing CO2 emission and population growth need the agricultural product volume increase.The total figure of the biogas liquefied separator structure of described vehicle-mounted type as shown in Figure 1 can be according to needs of production, the scale of specific design device.Large-scale person needs the packing design; Small-sized person can self-containedly design.
Claims (5)
1. vehicle-mounted type biogas cryogenic liquefaction separator, comprise: nitrogen compressor (5), condensate liquid device (6), compressed nitrogen air accumulator (7), the freezing separation bin of nitrogen expansion (8), it is characterized in that: described device all is arranged on the truck, the freezing separation bin of described nitrogen expansion (8) is provided with biogas import (8-9), water out respectively, and the freezing separation bin of nitrogen expansion (8) is communicated with normal pressure nitrogen storage bag (13), compressed nitrogen air accumulator (7), co 2 liquefaction storage tank (12.3), liquid methane storage tank (12.2), liquid hydrogen sulfide storage tank (12.1) respectively; Described normal pressure nitrogen storage bag (13) is communicated with compressed nitrogen air accumulator (7) by nitrogen pressure compression apparatus (5) through cooler (6), and described nitrogen compressor (5) connects biogas generator (2) by gearbox (4).
2. vehicle-mounted type biogas cryogenic liquefaction separator as claimed in claim 1, it is characterized in that: the freezing separation bin of described nitrogen expansion (8) is made of the freezing gas-liquid separation of normal temperature storehouse (8.1), withstand voltage freezing gas-liquid separation storehouse (8.2), cryogenic freezing gas-liquid separation storehouse (8.3), superfreeze gas-liquid separation storehouse (8.4), the freezing gas-liquid separation of described normal temperature storehouse (8.1) is provided with biogas import (8-9), water out respectively, and two-way is divided in the freezing gas-liquid separation of normal temperature storehouse (8.1): the one tunnel: be communicated with normal pressure nitrogen storage bag (13) by blower fan; Two the tunnel: be communicated with withstand voltage freezing gas-liquid separation storehouse (8.2), withstand voltage freezing gas-liquid separation storehouse (8.2) Fen Sanlu: a tunnel: be communicated with normal pressure nitrogen storage bag (13) by blower fan; Two the tunnel: be communicated with liquid hydrogen sulfide storage tank (12.1); Three the tunnel: be communicated with cryogenic freezing gas-liquid separation storehouse (8.3); Cryogenic freezing gas-liquid separation storehouse (8.3) Fen Sanlu: one tunnel: be communicated with normal pressure nitrogen storage bag (13) by blower fan; Two the tunnel: be communicated with liquefied carbon dioxide storage tank (12.3); Three the tunnel: be communicated with superfreeze gas-liquid separation storehouse (8.4), superfreeze gas-liquid separation storehouse (8.4) Fen Sanlu: a tunnel: be communicated with normal pressure nitrogen storage bag (13) by blower fan; Two the tunnel: be communicated with liquid methane storage tank (12.2), the fuel purifying tracheae in described superfreeze gas-liquid separation storehouse (8.4) is communicated with the connecting leg between superfreeze gas-liquid separation storehouse (8.4) and the cryogenic freezing gas-liquid separation storehouse (8.3); Described normal pressure nitrogen storage bag (13) is communicated with compressed nitrogen air accumulator (7) by compression set, and compressed nitrogen air accumulator (7) is communicated with the freezing gas-liquid separation of normal temperature storehouse (8.1), withstand voltage freezing gas-liquid separation storehouse (8.2), cryogenic freezing gas-liquid separation storehouse (8.3), superfreeze gas-liquid separation storehouse (8.4) respectively.
3. vehicle-mounted type biogas cryogenic liquefaction separator as claimed in claim 1, it is characterized in that: the freezing gas-liquid separation of described normal temperature storehouse (8.1), withstand voltage freezing gas-liquid separation storehouse (8.2), cryogenic freezing gas-liquid separation storehouse (8.3), the identical freezing separation bin of horizontal nitrogen expansion (8) that is referred to as of superfreeze gas-liquid separation storehouse (8.4) internal structure, the freezing separation bin of described horizontal nitrogen expansion (8) is by the housing of long tubular, housing is provided with thermal insulation layer (8-4), the middle and upper part is provided with the U type heat exchanger tube (8-2) of vertical arrangement in housing, and by at least one U type pipe fixed head (8-3) is fixing up and down, evenly be arranged alternately compressed nitrogen on the described U type pipe fixed head (8-3) by hole and U type heat exchanger tube (8-2), this district is nitrogen expansion storehouse (8-1); Described connect in bottom, nitrogen expansion storehouse (8-1) vertically arrange store up storehouse dividing plate (8-7), with storing up storehouse dividing plate (8-7) bottom barrel the gap is set, this district stores up storehouse (8-6) for liquid; The biogas pipeline of connection respectively (8-9) in described nitrogen expansion storehouse (8-1), compressed nitrogen air inlet (8-10), liquid outlet normal pressure nitrogen gas outlet (8-11), its normal pressure nitrogen gas outlet (8-11) is arranged on housing top; Liquid outlet is arranged on housing bottom.
4. vehicle-mounted type biogas cryogenic liquefaction separator as claimed in claim 1 is characterized in that: between the described pipeline valve is set.
5. vehicle-mounted type biogas cryogenic liquefaction separator as claimed in claim 2 is characterized in that: the freezing gas-liquid separation of described normal temperature storehouse (8.1), withstand voltage freezing gas-liquid separation storehouse (8.2), cryogenic freezing gas-liquid separation storehouse (8.3), superfreeze gas-liquid separation storehouse (8.4) are provided with pressure gauge and thermometer respectively.
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| CN2010102819387A CN101949633B (en) | 2010-09-15 | 2010-09-15 | Vehicle-mounted methane freezing, liquefying and separating device |
| PCT/CN2011/079606 WO2012034513A1 (en) | 2010-09-15 | 2011-09-14 | Vehicle-borne type apparatus for freezing, liquefying, and separating methane |
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| CN2010102819387A CN101949633B (en) | 2010-09-15 | 2010-09-15 | Vehicle-mounted methane freezing, liquefying and separating device |
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