CN110144251A - A kind of rubbish landfill gas method of purification based on hydration principle - Google Patents
A kind of rubbish landfill gas method of purification based on hydration principle Download PDFInfo
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- CN110144251A CN110144251A CN201910567879.0A CN201910567879A CN110144251A CN 110144251 A CN110144251 A CN 110144251A CN 201910567879 A CN201910567879 A CN 201910567879A CN 110144251 A CN110144251 A CN 110144251A
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- landfill gas
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- hydration
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- gas method
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- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 32
- 238000006703 hydration reaction Methods 0.000 title claims abstract description 28
- 230000036571 hydration Effects 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000000746 purification Methods 0.000 title claims abstract description 19
- 239000012528 membrane Substances 0.000 claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 238000006243 chemical reaction Methods 0.000 claims abstract description 37
- 238000000926 separation method Methods 0.000 claims abstract description 32
- 239000012153 distilled water Substances 0.000 claims abstract description 31
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000005273 aeration Methods 0.000 claims abstract description 19
- 230000006835 compression Effects 0.000 claims abstract description 12
- 238000007906 compression Methods 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 239000000284 extract Substances 0.000 claims abstract description 6
- 239000006260 foam Substances 0.000 claims description 36
- 239000000835 fiber Substances 0.000 claims description 35
- 229910000831 Steel Inorganic materials 0.000 claims description 28
- 239000010959 steel Substances 0.000 claims description 28
- 239000007921 spray Substances 0.000 claims description 17
- 239000000654 additive Substances 0.000 claims description 13
- 230000000996 additive effect Effects 0.000 claims description 13
- 238000004821 distillation Methods 0.000 claims description 13
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 10
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 10
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 9
- 239000004800 polyvinyl chloride Substances 0.000 claims description 9
- 229920002379 silicone rubber Polymers 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 5
- -1 polypropylene Polymers 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 238000001179 sorption measurement Methods 0.000 claims description 5
- 238000010025 steaming Methods 0.000 claims 1
- 238000007710 freezing Methods 0.000 abstract description 5
- 230000008014 freezing Effects 0.000 abstract description 5
- 238000011068 loading method Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 65
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 36
- 239000000203 mixture Substances 0.000 description 33
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 description 20
- 239000011248 coating agent Substances 0.000 description 20
- 238000000576 coating method Methods 0.000 description 20
- 239000011812 mixed powder Substances 0.000 description 17
- 238000003756 stirring Methods 0.000 description 12
- 239000000843 powder Substances 0.000 description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 229920000877 Melamine resin Polymers 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 8
- 238000001035 drying Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 7
- 235000012489 doughnuts Nutrition 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229960004424 carbon dioxide Drugs 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 150000001335 aliphatic alkanes Chemical class 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000007581 slurry coating method Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 230000002459 sustained effect Effects 0.000 description 4
- 239000004408 titanium dioxide Substances 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 229910002090 carbon oxide Inorganic materials 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000005431 greenhouse gas Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000004177 carbon cycle Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/228—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/229—Integrated processes (Diffusion and at least one other process, e.g. adsorption, absorption)
-
- 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
-
- 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
- C10L3/106—Removal of contaminants of water
-
- 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
- C10L3/108—Production of gas hydrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/20—Organic adsorbents
- B01D2253/202—Polymeric adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/05—Biogas
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention belongs to garbage loading embeading technical fields, and in particular to a kind of rubbish landfill gas method of purification based on hydration principle includes the following steps: step 1, pretreated landfill gas is put into surge tank, and carries out low-temperature treatment, obtains compression landfill gas；Step 2, compression landfill gas is added in cooling compressor, temperature filtration moisture obtains anhydrous landfill gas then through trash separator and heat exchanger；Step 3, anhydrous landfill gas is passed through membrane separation device cryogenic separation, obtains pure landfill gas；Step 4, pure landfill gas is poured into continuous low temperature aeration reaction in multiple groups distilled water reaction kettle, extracts methane hydrate freezing, obtains product.The present invention is cleaned oil removing by the way of low-temperature treatment, is obtained pure landfill gas, then through hydration reaction, is obtained high-purity methane hydrate.
Description
Technical field
The invention belongs to garbage loading embeading technical fields, and in particular to a kind of rubbish landfill gas purification side based on hydration principle
Method.
Background technique
After refuse landfill gas is consumer waste filling and embedding, be decomposed by the microorganisms in landfill yard, generation with methane and two
Carbonoxide mixed gas as main component.Methane containing 30%-55% volume ratio in landfill gas, contains 30%-45%
The carbon dioxide of volume ratio, in addition, also containing a small amount of air, foul gas and other minimum gas.In landfill gas
Methane is a kind of inflammable and explosive gas.Since methane explosion time needs mix with air, the 5%-15% ability in air is accounted for
It can explode, therefore almost without the danger of explosion in closed landfill yard.But the sky for passing through soil when landfill gas
Gap is transferred to other than landfill yard, and when mixing with air, it is possible to be exploded.Landfill gas also contains micro ammonia, one
The substances such as carbonoxide, hydrogen sulfide, a variety of volatile organic matters, can generate malodor problem and air pollution.But according to joint international politics
Climate change Senior Administrative Officer (IPCC) relevant regulations between mansion, carbon dioxide is biomass decomposition in untreated landfill gas
As a result, belong to a part of nature carbon cycle, be not counted in greenhouse gases.Methane is put into atmospheric greenhouse gas in landfill gas
Inventory, greenhouse effects are 21 times of same volume carbon dioxide.How to its effectively collect storage and rationally using be badly in need of solve
Technical problem certainly.
Summary of the invention
For the problems of the prior art, the present invention provides a kind of rubbish landfill gas method of purification based on hydration principle,
Cleaned oil removing by the way of low-temperature treatment, obtains pure landfill gas, then through hydration reaction, obtains the hydration of high-purity methane
Object.
To realize the above technical purpose, the technical scheme is that
A kind of rubbish landfill gas method of purification based on hydration principle, includes the following steps:
Step 1, pretreated landfill gas is put into surge tank, and carries out low-temperature treatment, obtain compression landfill gas；
Step 2, compression landfill gas is added in cooling compressor, temperature filtration moisture, then through trash separator and heat exchanger,
Obtain anhydrous landfill gas；
Step 3, anhydrous landfill gas is passed through membrane separation device cryogenic separation, obtains pure landfill gas；
Step 4, pure landfill gas is poured into continuous low temperature aeration reaction in multiple groups distilled water reaction kettle, extracts methane hydration
Object freezing, obtains product.
The temperature of low-temperature treatment in the step 1 is 2-8 DEG C, pressure 20-40kPa.
The temperature of temperature filtration in the step 2 is 0-5 DEG C.
Steel foams plate is provided in trash separator in the step 2, the aperture of the steel foams plate is along airflow direction
It is gradually reduced, and aperture is reduced by 8mm to 2mm.
The material of the steel foams plate is as follows:
8-10 parts of polyvinyl chloride, 3-5 parts of Sodium Polyacrylate, 3-5 parts of Kynoar, 3-5 parts of inorganic additive.
The specific surface of the steel foams plate is covered with a layer polypropylene acid sodium film layer.
The preparation method of steel foams plate: polyvinyl chloride fine powder, inorganic additive and Kynoar fine powder is sufficiently mixed
Conjunction forms mixed powder, and is added in distilled water and forms slurry；Melamine and lauryl sodium sulfate heating stirring is added extremely
Viscous paste is formed, slurry coating is formed into first layer coating film in substrate surface；Continue that lauryl sodium sulfate heating will be entered
Stirring stirring is coated in first layer and coats film surface, forms the second coating film；Multilayer is obtained after coating repeatedly according to the method described above
Coating film；Multiple coating film is subjected to constant temperature extruding reaction 2-3h, constant temperature steeps 2-5h in water, and drying obtains porous absorption bottom
Then plate is dipped in aqueous sodium polyacrylate, secondary drying, obtains steel foams plate.
Inorganic additive uses titanium dioxide or silica.The additional amount of melamine is mixed powder quality 20-
25%, the additional amount of lauryl sodium sulfate is mixed powder quality 3-6%, the quality for the lauryl sodium sulfate added every time
It is the 0.5-1% of mixed powder quality, and the additional amount of the lauryl sodium sulfate is no more than the 15% of mixed powder quality.
The temperature that constant temperature squeezes is 90-100 DEG C, pressure 0.4-0.7MPa.
Steel foams plate increases gas and the contact on porous foam surface and adsorptivity, foam with biggish surface apertures
Absorption panel aperture successively circulates from large to small, can effectively improve contact of the drop with foam surface, and gradient type contacts energy
Effective solution blockage problem is reached, prevents drop growth excessive.A variety of materials cooperatively form foam surface performance to increase
Add its surface to the attraction power of oily phase, while there is good finish again, so that oil is made mutually to be easy to slide from adsorption plane, from
And increase property easy to clean.
In use, Sodium Polyacrylate can absorb remaining moisture to steel foams plate, form subtle expansion, simultaneously
It is internal after expansion to form stable porous channel, achieve the effect that increase contact area, improves the deoiling effect at initial stage, be thin
Hole oil removing reduces risk.
The temperature of cryogenic separation in the step 3 is -3~5 DEG C, is provided with multiple hollow fibres in the membrane separation device
Tie up film.
The hollow-fibre membrane uses silicon rubber hollow-fibre membrane.130-190 μm of outer diameter of silicon rubber hollow-fibre membrane, wall thickness
20-50μm；Membrane area 1-6m2。
The hollow-fibre membrane uses concentric silicon rubber hollow-fibre membrane, including outer hollow-fibre membrane and interior doughnut
Film is provided with hollow-fibre membranes in 20-50, the outer diameter 130-190 μ of the interior hollow-fibre membrane in the outer hollow-fibre membrane
M, 20-50 μm of wall thickness；Membrane area 1-6m2, the outer diameter of the outer hollow-fibre membrane is 2-3mm, and wall thickness is 50-80 μm.
Gas between outer hollow-fibre membrane and interior hollow-fibre membrane is poured again at membrane separation device venthole, is carried out
Secondary separation.
The temperature of low temperature aeration in the step 4 is 2-8 DEG C, and the gas flow rate for being aerated flow velocity is 10-20mL/min.
Distillation water spray system is provided in the distilled water reaction kettle.
Pure landfill gas, which is put into the first distilled water reaction kettle, carries out low temperature aeration reaction, and formation is the first mixture
(including first methane hydrate), while the distilled water of bottom aeration is delivered to oneself in the first distillation reactor by motor
Spray equipment forms the spray in the first distillation reactor, forms secondary response with the first mixture, forms the second mixture,
It include the second methane hydrate in second mixture；The methane concentration of second methane hydrate is greater than first first
The methane concentration of alkane hydrate；Second mixture is passed through into after-fractionating water reaction kettle, reacts, obtains with distilled water formation
Third mixture, including third methane hydrate, then carry out spray reaction for the distilled water of bottom, and sustained response obtains the 4th
Mixture finally obtains mixture so successively reacting, and mixing is then carried out hydrate, and the separation of exhaust gas, waste water obtains
Hydrate.
From the above, it can be seen that the present invention has following advantages:
The oil removing 1. present invention is cleaned by the way of low-temperature treatment, obtains pure landfill gas, then through hydration reaction, obtains
To high-purity methane hydrate.
2. the present invention utilizes gradient foam adsorption plate, absorption deoiling effect can not only be effectively improved, and can
Play the problem of preventing greasy dirt from blocking.
Specific embodiment
The present invention will be described in detail in conjunction with the embodiments, but does not do any restriction to claim of the invention.
Embodiment 1
A kind of rubbish landfill gas method of purification based on hydration principle, includes the following steps:
Step 1, pretreated landfill gas is put into surge tank, and carries out low-temperature treatment, obtain compression landfill gas；
Step 2, compression landfill gas is added in cooling compressor, temperature filtration moisture, then through trash separator and heat exchanger,
Obtain anhydrous landfill gas；
Step 3, anhydrous landfill gas is passed through membrane separation device cryogenic separation, obtains pure landfill gas；
Step 4, pure landfill gas is poured into continuous low temperature aeration reaction in multiple groups distilled water reaction kettle, extracts methane hydration
Object freezing, obtains product.
The temperature of low-temperature treatment in the step 1 is 2 DEG C, pressure 20kPa.
The temperature of temperature filtration in the step 2 is 0 DEG C.
Steel foams plate is provided in trash separator in the step 2, the aperture of the steel foams plate is along airflow direction
It is gradually reduced, and aperture is reduced by 8mm to 2mm.
The material of the steel foams plate is as follows:
8 parts of polyvinyl chloride, 3 parts of Sodium Polyacrylate, 3 parts of Kynoar, 3 parts of inorganic additive.
The specific surface of the steel foams plate is covered with a layer polypropylene acid sodium film layer.
The preparation method of steel foams plate: polyvinyl chloride fine powder, inorganic additive and Kynoar fine powder is sufficiently mixed
Conjunction forms mixed powder, and is added in distilled water and forms slurry；Melamine and lauryl sodium sulfate heating stirring is added extremely
Viscous paste is formed, slurry coating is formed into first layer coating film in substrate surface；Continue that lauryl sodium sulfate heating will be entered
Stirring stirring is coated in first layer and coats film surface, forms the second coating film；Multilayer is obtained after coating repeatedly according to the method described above
Coating film；Multiple coating film is subjected to constant temperature extruding reaction 2h, constant temperature steeps 2h in water, and drying obtains porous absorption bottom plate, so
After be dipped in aqueous sodium polyacrylate, secondary drying obtains steel foams plate.
Inorganic additive uses titanium dioxide or silica.The additional amount of melamine is mixed powder quality 20%,
The additional amount of lauryl sodium sulfate is mixed powder quality 3%, and the quality for the lauryl sodium sulfate added every time is mixing
The 0.5% of powder quality, and the additional amount of total lauryl sodium sulfate is the 14% of mixed powder quality.The temperature that constant temperature squeezes
Degree is 90 DEG C, pressure 0.4MPa.
The temperature of cryogenic separation in the step 3 is -3 DEG C, is provided with multiple doughnuts in the membrane separation device
Film.
The hollow-fibre membrane uses concentric silicon rubber hollow-fibre membrane, including outer hollow-fibre membrane and interior doughnut
Film is provided with 20 interior hollow-fibre membranes, 130 μm of the outer diameter of the interior hollow-fibre membrane, wall thickness in the outer hollow-fibre membrane
20μm；Membrane area 1m2, the outer diameter of the outer hollow-fibre membrane is 2mm, and wall thickness is 50 μm.
Gas between outer hollow-fibre membrane and interior hollow-fibre membrane is poured again at membrane separation device venthole, is carried out
Secondary separation.
The temperature of low temperature aeration in the step 4 is 2 DEG C, and the gas flow rate for being aerated flow velocity is 10mL/min.
Distillation water spray system is provided in the distilled water reaction kettle.
Pure landfill gas, which is put into the first distilled water reaction kettle, carries out low temperature aeration reaction, and formation is the first mixture
(including first methane hydrate), while the distilled water of bottom aeration is delivered to oneself in the first distillation reactor by motor
Spray equipment forms the spray in the first distillation reactor, forms secondary response with the first mixture, forms the second mixture,
It include the second methane hydrate in second mixture；The methane concentration of second methane hydrate is greater than first first
The methane concentration of alkane hydrate；Second mixture is passed through into after-fractionating water reaction kettle, reacts, obtains with distilled water formation
Third mixture, including third methane hydrate, then carry out spray reaction for the distilled water of bottom, and sustained response obtains the 4th
Mixture finally obtains mixture so successively reacting, and mixing is then carried out hydrate, and the separation of exhaust gas, waste water obtains
Hydrate.
Embodiment 2
A kind of rubbish landfill gas method of purification based on hydration principle, includes the following steps:
Step 1, pretreated landfill gas is put into surge tank, and carries out low-temperature treatment, obtain compression landfill gas；
Step 2, compression landfill gas is added in cooling compressor, temperature filtration moisture, then through trash separator and heat exchanger,
Obtain anhydrous landfill gas；
Step 3, anhydrous landfill gas is passed through membrane separation device cryogenic separation, obtains pure landfill gas；
Step 4, pure landfill gas is poured into continuous low temperature aeration reaction in multiple groups distilled water reaction kettle, extracts methane hydration
Object freezing, obtains product.
The temperature of low-temperature treatment in the step 1 is 8 DEG C, pressure 40kPa.
The temperature of temperature filtration in the step 2 is 5 DEG C.
Steel foams plate is provided in trash separator in the step 2, the aperture of the steel foams plate is along airflow direction
It is gradually reduced, and aperture is reduced by 8mm to 2mm.
The material of the steel foams plate is as follows:
10 parts of polyvinyl chloride, 5 parts of Sodium Polyacrylate, 5 parts of Kynoar, 5 parts of inorganic additive.
The specific surface of the steel foams plate is covered with a layer polypropylene acid sodium film layer.
The preparation method of steel foams plate: polyvinyl chloride fine powder, inorganic additive and Kynoar fine powder is sufficiently mixed
Conjunction forms mixed powder, and is added in distilled water and forms slurry；Melamine and lauryl sodium sulfate heating stirring is added extremely
Viscous paste is formed, slurry coating is formed into first layer coating film in substrate surface；Continue that lauryl sodium sulfate heating will be entered
Stirring stirring is coated in first layer and coats film surface, forms the second coating film；Multilayer is obtained after coating repeatedly according to the method described above
Coating film；Multiple coating film is subjected to constant temperature extruding reaction 3h, constant temperature steeps 5h in water, and drying obtains porous absorption bottom plate, so
After be dipped in aqueous sodium polyacrylate, secondary drying obtains steel foams plate.
Inorganic additive uses titanium dioxide or silica.The additional amount of melamine is mixed powder quality 25%,
The additional amount of lauryl sodium sulfate is mixed powder quality 6%, and the quality for the lauryl sodium sulfate added every time is mixing
The 1% of powder quality, and the additional amount of total lauryl sodium sulfate is the 13% of mixed powder quality.What constant temperature squeezed
Temperature is 100 DEG C, pressure 0.7MPa.
The temperature of cryogenic separation in the step 3 is 5 DEG C, is provided with multiple doughnuts in the membrane separation device
Film.
The hollow-fibre membrane uses concentric silicon rubber hollow-fibre membrane, including outer hollow-fibre membrane and interior doughnut
Film is provided with 50 interior hollow-fibre membranes, 1190 μm of the outer diameter of the interior hollow-fibre membrane, wall thickness in the outer hollow-fibre membrane
50μm；Membrane area 6m2, the outer diameter of the outer hollow-fibre membrane is 3mm, and wall thickness is 80 μm.
Gas between outer hollow-fibre membrane and interior hollow-fibre membrane is poured again at membrane separation device venthole, is carried out
Secondary separation.
The temperature of low temperature aeration in the step 4 is 8 DEG C, and the gas flow rate for being aerated flow velocity is 20mL/min.
Distillation water spray system is provided in the distilled water reaction kettle.
Pure landfill gas, which is put into the first distilled water reaction kettle, carries out low temperature aeration reaction, and formation is the first mixture
(including first methane hydrate), while the distilled water of bottom aeration is delivered to oneself in the first distillation reactor by motor
Spray equipment forms the spray in the first distillation reactor, forms secondary response with the first mixture, forms the second mixture,
It include the second methane hydrate in second mixture；The methane concentration of second methane hydrate is greater than first first
The methane concentration of alkane hydrate；Second mixture is passed through into after-fractionating water reaction kettle, reacts, obtains with distilled water formation
Third mixture, including third methane hydrate, then carry out spray reaction for the distilled water of bottom, and sustained response obtains the 4th
Mixture finally obtains mixture so successively reacting, and mixing is then carried out hydrate, and the separation of exhaust gas, waste water obtains
Hydrate.
Embodiment 3
A kind of rubbish landfill gas method of purification based on hydration principle, includes the following steps:
Step 1, pretreated landfill gas is put into surge tank, and carries out low-temperature treatment, obtain compression landfill gas；
Step 2, compression landfill gas is added in cooling compressor, temperature filtration moisture, then through trash separator and heat exchanger,
Obtain anhydrous landfill gas；
Step 3, anhydrous landfill gas is passed through membrane separation device cryogenic separation, obtains pure landfill gas；
Step 4, pure landfill gas is poured into continuous low temperature aeration reaction in multiple groups distilled water reaction kettle, extracts methane hydration
Object freezing, obtains product.
The temperature of low-temperature treatment in the step 1 is 6 DEG C, pressure 30kPa.
The temperature of temperature filtration in the step 2 is 3 DEG C.
Steel foams plate is provided in trash separator in the step 2, the aperture of the steel foams plate is along airflow direction
It is gradually reduced, and aperture is reduced by 8mm to 2mm.
The material of the steel foams plate is as follows:
9 parts of polyvinyl chloride, 4 parts of Sodium Polyacrylate, 4 parts of Kynoar, 4 parts of inorganic additive.
The specific surface of the steel foams plate is covered with a layer polypropylene acid sodium film layer.
The preparation method of steel foams plate: polyvinyl chloride fine powder, inorganic additive and Kynoar fine powder is sufficiently mixed
Conjunction forms mixed powder, and is added in distilled water and forms slurry；Melamine and lauryl sodium sulfate heating stirring is added extremely
Viscous paste is formed, slurry coating is formed into first layer coating film in substrate surface；Continue that lauryl sodium sulfate heating will be entered
Stirring stirring is coated in first layer and coats film surface, forms the second coating film；Multilayer is obtained after coating repeatedly according to the method described above
Coating film；Multiple coating film is subjected to constant temperature extruding reaction 3h, constant temperature steeps 4h in water, and drying obtains porous absorption bottom plate, so
After be dipped in aqueous sodium polyacrylate, secondary drying obtains steel foams plate.
Inorganic additive uses titanium dioxide or silica.The additional amount of melamine is mixed powder quality 23%,
The additional amount of lauryl sodium sulfate is mixed powder quality 4%, and the quality for the lauryl sodium sulfate added every time is mixing
The 1% of powder quality, and the additional amount of the lauryl sodium sulfate is no more than the 10% of mixed powder quality.What constant temperature squeezed
Temperature is 95 DEG C, pressure 0.6MPa.
The temperature of cryogenic separation in the step 3 is 3 DEG C, is provided with multiple doughnuts in the membrane separation device
Film.
The hollow-fibre membrane uses silicon rubber hollow-fibre membrane.130-190 μm of outer diameter of silicon rubber hollow-fibre membrane, wall thickness
20-50μm；Membrane area 1-6m2。
The temperature of low temperature aeration in the step 4 is 6 DEG C, and the gas flow rate for being aerated flow velocity is 10-20mL/min.
Distillation water spray system is provided in the distilled water reaction kettle.
Pure landfill gas, which is put into the first distilled water reaction kettle, carries out low temperature aeration reaction, and formation is the first mixture
(including first methane hydrate), while the distilled water of bottom aeration is delivered to oneself in the first distillation reactor by motor
Spray equipment forms the spray in the first distillation reactor, forms secondary response with the first mixture, forms the second mixture,
It include the second methane hydrate in second mixture；The methane concentration of second methane hydrate is greater than first first
The methane concentration of alkane hydrate；Second mixture is passed through into after-fractionating water reaction kettle, reacts, obtains with distilled water formation
Third mixture, including third methane hydrate, then carry out spray reaction for the distilled water of bottom, and sustained response obtains the 4th
Mixture finally obtains mixture so successively reacting, and mixing is then carried out hydrate, and the separation of exhaust gas, waste water obtains
Hydrate.
Product testing
In conclusion the invention has the following advantages that
The oil removing 1. present invention is cleaned by the way of low-temperature treatment, obtains pure landfill gas, then through hydration reaction, obtains
To high-purity methane hydrate.
2. the present invention utilizes gradient foam adsorption plate, absorption deoiling effect can not only be effectively improved, and can
Play the problem of preventing greasy dirt from blocking.
It is understood that being merely to illustrate the present invention above with respect to specific descriptions of the invention and being not limited to this
Technical solution described in inventive embodiments.Those skilled in the art should understand that still can be carried out to the present invention
Modification or equivalent replacement, to reach identical technical effect；As long as meet use needs, all protection scope of the present invention it
It is interior.
Claims (10)
1. a kind of rubbish landfill gas method of purification based on hydration principle, characterized by the following steps:
Step 1, pretreated landfill gas is put into surge tank, and carries out low-temperature treatment, obtain compression landfill gas；
Step 2, compression landfill gas is added in cooling compressor, temperature filtration moisture obtains then through trash separator and heat exchanger
Anhydrous landfill gas；
Step 3, anhydrous landfill gas is passed through membrane separation device cryogenic separation, obtains pure landfill gas；
Step 4, pure landfill gas is poured into continuous low temperature aeration reaction in multiple groups distilled water reaction kettle, it is cold extracts methane hydrate
Freeze, obtains product.
2. the rubbish landfill gas method of purification according to claim 1 based on hydration principle, it is characterised in that: the step
The temperature of low-temperature treatment in 1 is 2-8 DEG C, pressure 20-40kPa.
3. the rubbish landfill gas method of purification according to claim 1 based on hydration principle, it is characterised in that: the step
The temperature of temperature filtration in 2 is 0-5 DEG C.
4. the rubbish landfill gas method of purification according to claim 1 based on hydration principle, it is characterised in that: the step
Steel foams plate is provided in trash separator in 2, the aperture of the steel foams plate is gradually reduced along airflow direction, and aperture by
8mm is reduced to 2mm.
5. the rubbish landfill gas method of purification according to claim 4 based on hydration principle, it is characterised in that: the foam
The material of adsorption plate is as follows:
8-10 parts of polyvinyl chloride, 3-5 parts of Sodium Polyacrylate, 3-5 parts of Kynoar, 3-5 parts of inorganic additive.
6. the rubbish landfill gas method of purification according to claim 4 based on hydration principle, it is characterised in that: the foam
The specific surface of adsorption plate is covered with a layer polypropylene acid sodium film layer.
7. the rubbish landfill gas method of purification according to claim 1 based on hydration principle, it is characterised in that: the step
The temperature of cryogenic separation in 3 is -3~5 DEG C, is provided with multiple hollow-fibre membranes in the membrane separation device.
8. the rubbish landfill gas method of purification according to claim 7 based on hydration principle, it is characterised in that: described hollow
Tunica fibrosa uses concentric silicon rubber hollow-fibre membrane.
9. the rubbish landfill gas method of purification according to claim 1 based on hydration principle, it is characterised in that: the step
The temperature of low temperature aeration in 4 is 2-8 DEG C, and the gas flow rate for being aerated flow velocity is 10-20mL/min.
10. the rubbish landfill gas method of purification according to claim 9 based on hydration principle, it is characterised in that: the steaming
Distillation water spray system is provided in distilled water reaction kettle.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009009575A1 (en) * | 2007-07-10 | 2009-01-15 | Manufactured Methane Corporation | Landfill gas purification method and system |
| CN101554560A (en) * | 2008-04-09 | 2009-10-14 | 中国石油大学(北京) | Method for treating coal bed gas at low pressure |
| CN106701231A (en) * | 2016-12-28 | 2017-05-24 | 宁波兴光新能源投资有限公司 | Landfill gas purification method |
| CN107285789A (en) * | 2017-08-08 | 2017-10-24 | 芜湖通全科技有限公司 | A kind of preparation method of vitreous silica gradient pore foamed ceramics |
-
2019
- 2019-06-27 CN CN201910567879.0A patent/CN110144251B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009009575A1 (en) * | 2007-07-10 | 2009-01-15 | Manufactured Methane Corporation | Landfill gas purification method and system |
| CN101554560A (en) * | 2008-04-09 | 2009-10-14 | 中国石油大学(北京) | Method for treating coal bed gas at low pressure |
| CN106701231A (en) * | 2016-12-28 | 2017-05-24 | 宁波兴光新能源投资有限公司 | Landfill gas purification method |
| CN107285789A (en) * | 2017-08-08 | 2017-10-24 | 芜湖通全科技有限公司 | A kind of preparation method of vitreous silica gradient pore foamed ceramics |
Non-Patent Citations (1)
| Title |
|---|
| 李本高等主编: "《现代工业水处理技术与应用》", 30 June 2004, 中国石化出版社 * |
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