CN107083264A - A kind of purifying technique for industrial methane - Google Patents

A kind of purifying technique for industrial methane Download PDF

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Publication number
CN107083264A
CN107083264A CN201710536006.4A CN201710536006A CN107083264A CN 107083264 A CN107083264 A CN 107083264A CN 201710536006 A CN201710536006 A CN 201710536006A CN 107083264 A CN107083264 A CN 107083264A
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biogas
methane
ion
industrial
ion exchange
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徐仙峰
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Hefei Jun Choose Electrical Equipment Co
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Hefei Jun Choose Electrical Equipment Co
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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
    • 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
    • C10L10/00—Use of additives to fuels or fires for particular purposes
    • C10L10/04—Use of additives to fuels or fires for particular purposes for minimising corrosion or incrustation
    • 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
    • C10L3/08—Production of synthetic natural gas
    • 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
    • C10L3/102—Removal of contaminants of acid contaminants
    • C10L3/103—Sulfur containing 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
    • C10L3/102—Removal of contaminants of acid contaminants
    • C10L3/104—Carbon dioxide
    • 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
    • C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
    • C10L2230/22—Function and purpose of a components of a fuel or the composition as a whole for improving fuel economy or fuel efficiency
    • 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
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/14—Injection, e.g. in a reactor or a fuel stream during fuel production
    • C10L2290/141—Injection, e.g. in a reactor or a fuel stream during fuel production of additive or catalyst
    • 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
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/30—Pressing, compressing or compacting
    • 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
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
    • C10L2290/542—Adsorption of impurities during preparation or upgrading of a fuel

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention provides a kind of purifying technique for industrial methane, biogas is subjected to pressurized treatment；The ion exchange column that biogas after supercharging is passed through into absorbing carbon dioxide and hydrogen sulfide carries out the methane content of bilogas after ion exchange, and absorbing carbon dioxide and hydrogen sulfide, exchange adsorption higher than 94%；Processing is compressed to purifying marsh gas, the pressure of purifying marsh gas is between 20MPa 23MPa；To the biogas diffusing catalyst agent after compression, industrial methane is made；Industrial methane obtained above is filled into for the pressurized tank of storage industry biogas.By common biogas is compressed, ion exchange absorption, after synergy, disposably, carbon dioxide and hydrogen sulfide efficiently separated, it is may be used as industrial methane.

Description

A kind of purifying technique for industrial methane
Technical field
The invention belongs to biogas production technical field, in particular it relates to a kind of purifying technique for industrial methane.
Background technology
Biogas is a kind of green energy resource with great potential.It is mainly some organic matters, such as stalk, leaf, Human and animal excreta the like waste completely cuts off air, produced by microbial action or fermentation under certain temperature, humidity and acidity condition Raw imflammable gas.Common biogas CH4Content is 50-70%, other impurity COs2For 20-30%, H2S is 0.2-3%, burning-point For 500 DEG C, caloric value is 20-25MJ/m3.Because common biogas contains H2S, therefore slightly have foul smell taste during burning, work as CH4It is low When 45%, biogas could be lighted with naked light.Due to common biogas CH4Content is low, and impurity is more, and common biogas can only be civilian Or for generating electricity, it is impossible to used as industrial methane.And during common biogas combustion, hydrogen sulfide therein can be converted into corrosivity very Strong sulfurous acid mist, not only pollutes environment, and hydrogen sulfide is dissolved in generation hydrosulphuric acid after water and pipeline, basin and gas equipment are made Into heavy corrosion.Carbon dioxide is main greenhouse gases, maximum to the contribution in greenhouse, and ratio shared in biogas compared with Greatly, it is necessary to remove the carbon dioxide in biogas, to improve the efficiency of combustion of biogas.
By marsh gas purifying, purification, the higher sulfur-free natural gas of grade can be prepared into, be directly incorporated into city gas transmission pipeline net work or Person turns into after pressurization, liquefaction compresses and liquefies natural gas, with more preferable economic benefit；The whole of biogas engineering can not only be lifted Body technique level, and higher economy return can be brought by selling natural gas after purification；It is to administer organic waste ring Border pollution, organic waste is converted into pure high heating value natural gas, obtain green regenerative energy sources etc. can be using material very Effective technology and more economic, practical means；For industry, energy-conserving and environment-protective reduce production cost.
The content of the invention
For defect of the prior art, it is an object of the invention to provide a kind of purifying technique for industrial methane, mesh Be to solve common biogas CH4Content is low, more than impurity can not as industrial methane technical problem.
The present invention is used for the purifying technique of industrial methane, by common biogas is compressed, ion exchange absorption, after synergy, one Secondary property, efficiently separates carbon dioxide and hydrogen sulfide, it is may be used as industrial methane.
A kind of purifying technique for industrial methane provided according to the present invention, comprises the following steps：
（1）Biogas is subjected to pressurized treatment, the biogas pressure after supercharging is controlled between 0.6MPa-1.3MPa；
（2）The ion exchange column that biogas after supercharging is passed through into absorbing carbon dioxide and hydrogen sulfide carries out ion exchange, and adsorbs Methane content of bilogas after carbon dioxide and hydrogen sulfide, exchange adsorption is higher than 94%；
（3）Biogas after absorption is cooled down and dewater treatment is carried out, biogas is purified；
（4）Processing is compressed to purifying marsh gas, the pressure of purifying marsh gas is between 20MPa-23MPa；
（5）19-21 parts of dodecyl sodium sulfate, 23-25 parts of trien, Imidazole cation are weighed by mass fraction 5-7 parts of compound, 49-51 parts of propyl alcohol, are made catalyst after stirring and evenly mixing；
（6）To the biogas diffusing catalyst agent after compression, industrial methane is made；
（7）Industrial methane obtained above is filled into for the pressurized tank of storage industry biogas.
Preferably, the step（2）When methane content of bilogas is less than 94%, pass through valve auto-alternate to another group of ion Exchange column.
Preferably, the step（2）Filling ion-exchange fibre or ion exchange resin in ion exchange column.
Preferably, the ion exchange resin is phenylethylene resin series.
Preferably, the ion-exchange fibre selects the-NR of base containing quaternary amine3OH functional groups, primary amine groups-NH2, acid amides CONH2 Or tertiary amine groups-NR2Functional group.
Preferably, ion-exchange fibre skeleton based on acrylic fiber, passes sequentially through amination, quaterisation, Quaternary ammonium group highly basic group is introduced in fibre structure.
Preferably, the ion-exchange fibre preparation method is：By acrylic fiber according to 1: 3-7 solid-liquid weight than submerging In Liquid polyamines based compound, react 2-10h in 80-110 DEG C and obtain polyamines fiber；Then by polyamines fiber deionized water Clean and in being dried at 50-60 DEG C, itself and glycidyl trimethylammonium chloride are carried out in 20-70 DEG C in a solvent quaternized anti- 2-10h is answered, strongly basic anion ion exchange fibre is prepared；Reaction takes out fiber after terminating, and is washed with deionized water only, in 50- Dried at a temperature of 60 DEG C to constant weight.
Preferably, the polyamines fiber, glycidyl trimethylammonium chloride, solvent volume ratio=1: 1.3-4: 40-60.
Compared with prior art, the present invention has following beneficial effect：
（1）The purifying technique for industrial methane of the present invention, by common biogas is compressed, ion exchange is adsorbed, after synergy, one Secondary property, efficiently separates carbon dioxide and hydrogen sulfide, it is may be used as industrial methane；
（2）The present invention can be separated the methane in biogas simultaneously with hydrogen sulfide, carbon dioxide by ion exchange column.Reduction The processing cost of biogas separating-purifying, in effectively reduction environmental pollution, improves economic benefit, before good popularization Scape；Meanwhile, to the biogas diffusing catalyst agent after compression, the catalyst can play emulsification in mixed process, purify, activates, urge The effect such as change and rapid osmotic, effectively improves the clearance of hydrogen sulfide, carbon dioxide, improves the purity of biogas；
（3）Catalyst of the present invention in use, while can prevent the corrosion of container and pipeline and remove dirt, realizes container With the automatically cleaning of pipeline, line clogging is prevented；
（4）Catalyst of the present invention uniformly can quickly spread in use, be fully mixed with purifying marsh gas, have to purifying marsh gas There are catalysis, reformation, so as to change the combustibility of biogas, the carbochain of biogas can be fried in the process It is broken, biogas is fully burnt, to reach the utilization rate and thermal effect that improve biogas, be industrial biogas.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention Rather than limitation the scope of the present invention.
It is an object of the invention to provide a kind of purifying technique for industrial methane, it is therefore an objective to solves common biogas CH4Contain Measure low, impurity more than can not as industrial methane technical problem.
The present invention is used for the purifying technique of industrial methane, by common biogas is compressed, ion exchange absorption, after synergy, one Secondary property, efficiently separates carbon dioxide and hydrogen sulfide, it is may be used as industrial methane.
A kind of purifying technique for industrial methane provided according to the present invention, comprises the following steps：
（1）Biogas is subjected to pressurized treatment, the biogas pressure after supercharging is controlled between 0.6MPa-1.3MPa；
（2）The ion exchange column that biogas after supercharging is passed through into absorbing carbon dioxide and hydrogen sulfide carries out ion exchange, and adsorbs Methane content of bilogas after carbon dioxide and hydrogen sulfide, exchange adsorption is higher than 94%；
（3）Biogas after absorption is cooled down and dewater treatment is carried out, biogas is purified；
（4）Processing is compressed to purifying marsh gas, the pressure of purifying marsh gas is between 20MPa-23MPa；
（5）19-21 parts of dodecyl sodium sulfate, 23-25 parts of trien, Imidazole cation are weighed by mass fraction 5-7 parts of compound, 49-51 parts of propyl alcohol, are made catalyst after stirring and evenly mixing；
（6）To the biogas diffusing catalyst agent after compression, industrial methane is made；
（7）Industrial methane obtained above is filled into for the pressurized tank of storage industry biogas.
Preferably, the step（2）When methane content of bilogas is less than 94%, pass through valve auto-alternate to another group of ion Exchange column.
Preferably, the step（2）Filling ion-exchange fibre or ion exchange resin in ion exchange column.
Preferably, the ion exchange resin is phenylethylene resin series.
Preferably, the ion-exchange fibre selects the-NR of base containing quaternary amine3OH functional groups, primary amine groups-NH2, acid amides CONH2 Or tertiary amine groups-NR2Functional group.
Preferably, ion-exchange fibre skeleton based on acrylic fiber, passes sequentially through amination, quaterisation, Quaternary ammonium group highly basic group is introduced in fibre structure.
Preferably, the ion-exchange fibre preparation method is：By acrylic fiber according to 1: 3-7 solid-liquid weight than submerging In Liquid polyamines based compound, react 2-10h in 80-110 DEG C and obtain polyamines fiber；Then by polyamines fiber deionized water Clean and in being dried at 50-60 DEG C, itself and glycidyl trimethylammonium chloride are carried out in 20-70 DEG C in a solvent quaternized anti- 2-10h is answered, strongly basic anion ion exchange fibre is prepared；Reaction takes out fiber after terminating, and is washed with deionized water only, in 50- Dried at a temperature of 60 DEG C to constant weight.
Preferably, the polyamines fiber, glycidyl trimethylammonium chloride, solvent volume ratio=1: 1.3-4: 40-60.
Compared with prior art, the present invention has following beneficial effect：
（1）The purifying technique for industrial methane of the present invention, by common biogas is compressed, ion exchange is adsorbed, after synergy, one Secondary property, efficiently separates carbon dioxide and hydrogen sulfide, it is may be used as industrial methane；
（2）The present invention can be separated the methane in biogas simultaneously with hydrogen sulfide, carbon dioxide by ion exchange column.Reduction The processing cost of biogas separating-purifying, in effectively reduction environmental pollution, improves economic benefit, before good popularization Scape；Meanwhile, to the biogas diffusing catalyst agent after compression, the catalyst can play emulsification in mixed process, purify, activates, urge The effect such as change and rapid osmotic, effectively improves the clearance of hydrogen sulfide, carbon dioxide, improves the purity of biogas；
（3）Catalyst of the present invention in use, while can prevent the corrosion of container and pipeline and remove dirt, realizes container With the automatically cleaning of pipeline, line clogging is prevented；
（4）Catalyst of the present invention uniformly can quickly spread in use, be fully mixed with purifying marsh gas, have to purifying marsh gas There are catalysis, reformation, so as to change the combustibility of biogas, the carbochain of biogas can be fried in the process It is broken, biogas is fully burnt, to reach the utilization rate and thermal effect that improve biogas, be industrial biogas.
Embodiment 1
A kind of purifying technique for industrial methane that the present embodiment is provided, comprises the following steps：
（1）Biogas is subjected to pressurized treatment, the biogas pressure after supercharging is controlled in 1.3MPa；
（2）The ion exchange column that biogas after supercharging is passed through into absorbing carbon dioxide and hydrogen sulfide carries out ion exchange, and adsorbs Methane content of bilogas after carbon dioxide and hydrogen sulfide, exchange adsorption is higher than 94%；
（3）Biogas after absorption is cooled down and dewater treatment is carried out, biogas is purified；
（4）Processing is compressed to purifying marsh gas, the pressure for making purifying marsh gas is 20MPa；
（5）21 parts of dodecyl sodium sulfate, 23 parts of trien, Imidazole cation compound 7 are weighed by mass fraction Part, 49 parts of propyl alcohol, are made catalyst after stirring and evenly mixing；
（6）To the biogas diffusing catalyst agent after compression, industrial methane is made；
（7）Industrial methane obtained above is filled into for the pressurized tank of storage industry biogas.
The step（2）When methane content of bilogas is less than 94%, pass through valve auto-alternate to another group of ion exchange column.
The step（2）Filling ion-exchange fibre or ion exchange resin in ion exchange column.
The ion exchange resin is phenylethylene resin series.
The ion-exchange fibre selects the-NR of base containing quaternary amine3OH functional groups, primary amine groups-NH2, acid amides CONH2Or tertiary amine Base-NR2Functional group.
Ion-exchange fibre skeleton based on acrylic fiber, passes sequentially through amination, quaterisation, in fiber knot Quaternary ammonium group highly basic group is introduced in structure.
The ion-exchange fibre preparation method is：Acrylic fiber according to 1: 7 solid-liquid weight ratio is immersed in liquid many In amine compound, react 10h in 80 DEG C and obtain polyamines fiber；Then polyamines fiber is washed with deionized water only and at 50 DEG C Drying, carries out quaterisation 2h in 70 DEG C in a solvent with glycidyl trimethylammonium chloride by it, prepares strong basicity cloudy Ion-exchange fibre；Reaction takes out fiber after terminating, and is washed with deionized water only, is dried at a temperature of 60 DEG C to constant weight.
The polyamines fiber, glycidyl trimethylammonium chloride, solvent volume ratio=1: 1.3: 60.
Embodiment 2
（1）Biogas is subjected to pressurized treatment, the biogas pressure after supercharging is controlled in 0.6MPa；
（2）The ion exchange column that biogas after supercharging is passed through into absorbing carbon dioxide and hydrogen sulfide carries out ion exchange, and adsorbs Methane content of bilogas after carbon dioxide and hydrogen sulfide, exchange adsorption is higher than 94%；
（3）Biogas after absorption is cooled down and dewater treatment is carried out, biogas is purified；
（4）Processing is compressed to purifying marsh gas, the pressure of purifying marsh gas is between 23MPa；
（5）19 parts of dodecyl sodium sulfate, 25 parts of trien, Imidazole cation compound 5 are weighed by mass fraction Part, 51 parts of propyl alcohol, are made catalyst after stirring and evenly mixing；
（6）To the biogas diffusing catalyst agent after compression, industrial methane is made；
（7）Industrial methane obtained above is filled into for the pressurized tank of storage industry biogas.
The step（2）When methane content of bilogas is less than 94%, pass through valve auto-alternate to another group of ion exchange column.
The step（2）Filling ion-exchange fibre or ion exchange resin in ion exchange column.
The ion exchange resin is phenylethylene resin series.
The ion-exchange fibre selects the-NR of base containing quaternary amine3OH functional groups, primary amine groups-NH2, acid amides CONH2Or tertiary amine Base-NR2Functional group.
Ion-exchange fibre skeleton based on acrylic fiber, passes sequentially through amination, quaterisation, in fiber knot Quaternary ammonium group highly basic group is introduced in structure.
The ion-exchange fibre preparation method is：Acrylic fiber according to 1: 3 solid-liquid weight ratio is immersed in liquid many In amine compound, react 2h in 110 DEG C and obtain polyamines fiber；Then polyamines fiber is washed with deionized water only and at 60 DEG C Drying, carries out quaterisation 10h in 20 DEG C in a solvent with glycidyl trimethylammonium chloride by it, prepares strong basicity cloudy Ion-exchange fibre；Reaction takes out fiber after terminating, and is washed with deionized water only, is dried at a temperature of 50 DEG C to constant weight.
The polyamines fiber, glycidyl trimethylammonium chloride, solvent volume ratio=1: 4: 40.
Embodiment 3
（1）Biogas is subjected to pressurized treatment, the biogas pressure after supercharging is controlled in 1.1MPa；
（2）The ion exchange column that biogas after supercharging is passed through into absorbing carbon dioxide and hydrogen sulfide carries out ion exchange, and adsorbs Methane content of bilogas after carbon dioxide and hydrogen sulfide, exchange adsorption is higher than 94%；
（3）Biogas after absorption is cooled down and dewater treatment is carried out, biogas is purified；
（4）Processing is compressed to purifying marsh gas, the pressure of purifying marsh gas is in 22MPa；
（5）19 parts of dodecyl sodium sulfate, 23 parts of trien, Imidazole cation compound 6 are weighed by mass fraction Part, 51 parts of propyl alcohol, are made catalyst after stirring and evenly mixing；
（6）To the biogas diffusing catalyst agent after compression, industrial methane is made；
（7）Industrial methane obtained above is filled into for the pressurized tank of storage industry biogas.
The step（2）When methane content of bilogas is less than 94%, pass through valve auto-alternate to another group of ion exchange column.
The step（2）Filling ion-exchange fibre or ion exchange resin in ion exchange column.
The ion exchange resin is phenylethylene resin series.
The ion-exchange fibre selects the-NR of base containing quaternary amine3OH functional groups, primary amine groups-NH2, acid amides CONH2Or tertiary amine Base-NR2Functional group.
Ion-exchange fibre skeleton based on acrylic fiber, passes sequentially through amination, quaterisation, in fiber knot Quaternary ammonium group highly basic group is introduced in structure.
The ion-exchange fibre preparation method is：Acrylic fiber according to 1: 5 solid-liquid weight ratio is immersed in liquid many In amine compound, react 7h in 90 DEG C and obtain polyamines fiber；Then polyamines fiber is washed with deionized water only and at 55 DEG C Drying, carries out quaterisation 5h in 40 DEG C in a solvent with glycidyl trimethylammonium chloride by it, prepares strong basicity cloudy Ion-exchange fibre；Reaction takes out fiber after terminating, and is washed with deionized water only, is dried at a temperature of 58 DEG C to constant weight.
The polyamines fiber, glycidyl trimethylammonium chloride, solvent volume ratio=1: 2.5: 55.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow Ring the substantive content of the present invention.

Claims (8)

1. a kind of purifying technique for industrial methane, it is characterised in that comprise the following steps：
（1）Biogas is subjected to pressurized treatment, the biogas pressure after supercharging is controlled between 0.6MPa-1.3MPa；
（2）The ion exchange column that biogas after supercharging is passed through into absorbing carbon dioxide and hydrogen sulfide carries out ion exchange, and adsorbs Methane content of bilogas after carbon dioxide and hydrogen sulfide, exchange adsorption is higher than 94%；
（3）Biogas after absorption is cooled down and dewater treatment is carried out, biogas is purified；
（4）Processing is compressed to purifying marsh gas, the pressure of purifying marsh gas is between 20MPa-23MPa；
（5）19-21 parts of dodecyl sodium sulfate, 23-25 parts of trien, Imidazole cation are weighed by mass fraction 5-7 parts of compound, 49-51 parts of propyl alcohol, are made catalyst after stirring and evenly mixing；
（6）To the biogas diffusing catalyst agent after compression, industrial methane is made；
（7）Industrial methane obtained above is filled into for the pressurized tank of storage industry biogas.
2. the purifying technique according to claim 1 for industrial methane, it is characterised in that：The step（2）Work as biogas When middle methane content is less than 94%, pass through valve auto-alternate to another group of ion exchange column.
3. the purifying technique according to claim 2 for industrial methane, it is characterised in that：The step（2）Ion is handed over Change filling ion-exchange fibre or ion exchange resin in post.
4. the purifying technique according to claim 2 for industrial methane, it is characterised in that：The ion exchange resin is Phenylethylene resin series.
5. the purifying technique according to claim 2 for industrial methane, it is characterised in that：The ion-exchange fibre choosing With-the NR of base containing quaternary amine3OH functional groups, primary amine groups-NH2, acid amides CONH2Or tertiary amine groups-NR2Functional group.
6. the purifying technique according to claim 2 for industrial methane, it is characterised in that：The ion-exchange fibre with Skeleton based on acrylic fiber, passes sequentially through amination, quaterisation, and quaternary ammonium group highly basic group is introduced in fibre structure.
7. the purifying technique according to claim 6 for industrial methane, it is characterised in that：The ion-exchange fibre system Preparation Method is：Acrylic fiber is immersed in Liquid polyamines based compound according to 1: 3-7 solid-liquid weight ratio, it is anti-in 80-110 DEG C 2-10h is answered to obtain polyamines fiber；Then polyamines fiber is washed with deionized water only and in being dried at 50-60 DEG C, by itself and shrink Glycerine trimethyl ammonium chloride carries out quaterisation 2-10h in 20-70 DEG C in a solvent, prepares strong alkalinity anion and exchanges fine Dimension；Reaction takes out fiber after terminating, and is washed with deionized water only, is dried at a temperature of 50-60 DEG C to constant weight.
8. the purifying technique according to claim 7 for industrial methane, it is characterised in that：The polyamines fiber, shrink Glycerine trimethyl ammonium chloride, solvent volume ratio=1: 1.3-4: 40-60.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101879466A (en) * 2010-07-02 2010-11-10 河南省科学院化学研究所有限公司 Strong caustic anion exchanging fiber material and synthetic method thereof
CN102876414A (en) * 2012-10-16 2013-01-16 陈衍芽 Preparation process for synergistic industrial biogas
CN106118777A (en) * 2016-08-24 2016-11-16 深圳前海中盛环保科技有限公司 A kind of marsh gas purifying purifies the method for methane

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101879466A (en) * 2010-07-02 2010-11-10 河南省科学院化学研究所有限公司 Strong caustic anion exchanging fiber material and synthetic method thereof
CN102876414A (en) * 2012-10-16 2013-01-16 陈衍芽 Preparation process for synergistic industrial biogas
CN106118777A (en) * 2016-08-24 2016-11-16 深圳前海中盛环保科技有限公司 A kind of marsh gas purifying purifies the method for methane

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