CN107400542A - A kind of nano-graphite fluid for being used to strengthen coal bed gas purification - Google Patents
A kind of nano-graphite fluid for being used to strengthen coal bed gas purification Download PDFInfo
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- CN107400542A CN107400542A CN201710853788.4A CN201710853788A CN107400542A CN 107400542 A CN107400542 A CN 107400542A CN 201710853788 A CN201710853788 A CN 201710853788A CN 107400542 A CN107400542 A CN 107400542A
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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
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- 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
- B01D53/14—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 absorption
- B01D53/1418—Recovery of products
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- 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
- B01D53/14—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 absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
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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
- C10L3/105—Removal of contaminants of nitrogen
-
- 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
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/24—Hydrocarbons
- B01D2256/245—Methane
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/10—Single element gases other than halogens
- B01D2257/102—Nitrogen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/10—Single element gases other than halogens
- B01D2257/104—Oxygen
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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
- 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
- C10L2290/541—Absorption of impurities during preparation or upgrading of a fuel
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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
- 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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- 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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/20—Capture or disposal of greenhouse gases of methane
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- Engineering & Computer Science (AREA)
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- Organic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a kind of nano-graphite fluid for being used to strengthen coal bed gas purification.The raw material of the nano-graphite fluid is nano-graphite particle, base fluid, dispersant and thermodynamics additive, the preparation method of nano-graphite fluid is by nano-graphite particle, base fluid, dispersant, thermodynamics additive is prepared into nano-graphite fluid and produces adsorbent by the way that mechanical agitation and ultrasonic wave separating apparatus are scattered, the preparation method of the nano-graphite particle is that graphite is carried out into ball milling in liquid CO 2, it is levigate to particle diameter be 0.1 0.2mm, then the graphite after will be levigate pressurizes at normal temperatures with liquid CO 2, 30 45min are placed at this pressure, then heat to 150 200 DEG C, pressure is discharged to normal pressure in 3min, obtain nano-graphite particle, the particle diameter of nano-graphite particle is 20 80nm.The CH of the present invention4Recovery method is simple, and cost is low, and methane recovery greatly increases in low concentration coal-bed gas.
Description
Technical field
The present invention relates to a kind of nano-graphite fluid for being used to strengthen coal bed gas purification, belong to energy technology field.
Background technology
Progress of coal mining pumps out gas of the methane concentration less than 30% and is referred to as low concentration coal-bed gas.Low concentration coal at present
Layer gas fraction is used to generate electricity, most of directly to empty.The low concentration coal-bed gas generation technology initiated in the world with China
The successive appearance to make a breakthrough with central property tax support policy, emptied to ensure coal mine production safety by extraction in vain
Low concentration coal-bed gas can become waste becoming treasure from this.As the Shanxi Province of coal in China the largest province, if can be current colliery
The low concentration coal-bed gas of a large amount of extractions emptyings is generated electricity and generated heat utilization, can not only reduce dirt of the discharge of methane to environment
Dye, can also bring preferable economic benefit to colliery.Along with the exploration and exploitation of coal resources, coal bed gas provides as association
Source is largely found.Start to start to walk in indivedual collieries although Shanxi Province's low concentration coal-bed gas utilizes, most coals
Ore deposit enterprise does not utilize also to low concentration coal-bed gas completely at present because the degree of knowledge and value is inadequate.National mine coal
Layer gas extraction reaches hundred billion cubic meters, but utilization rate, less than 50%, the low concentration coal-bed gas of about 50 billion cubic meters and nearly 10,000,000,000 is stood
The mine ventilation coal bed gas of square rice does not utilize substantially, direct extraction emptying, as a result not only increases greenhouse gas emission, also makes
Into the waste of coal bed gas resource.
At present, the approach that low concentration coal-bed gas and ventilation coal bed gas effectively utilize mainly has three kinds：Low concentration coal-bed gas
Separating-purifying, low concentration coal-bed gas generate electricity, ventilation coal bed gas oxidation utilization technology.The core technology grasped using China,
Realize that making full use of for mineral diagram is not only technically feasible, and there is stronger economic benefit and social benefit.
First, realize that emission reduction has large space by gas utilization.Because CBM Drainage is high-volume larger, pass through coal bed gas profit
It is larger with achievable emission reduction total amount, the low concentration coal-bed gas and ventilation coal of a Ge100Wan Dun coal mining enterprises (average case calculating)
Utilized if layer gas is all realized, equivalent to 200,000 cars of carbon emission reduction.The existing emptying coal bed gas resource in Shanxi Province is completely sharp
With rear, the CER of realization is by more than the total carbon emission of whole automobiles inside the province.Second, carry out skill for following Coal Industry Development
Art deposit.As low concentration coal-bed gas utilizes and divulged information the continuous maturation of coal bed gas oxidation technology, in following process of coal mining
Coal bed gas would not allow for as the sewage in current industrial production it is in line, it is necessary to handle.If develop coal bed gas profit in advance
With industry, it is possible to reduce influence when future, state compulsion performed coal bed gas discharge standard to industry development.3rd, promote colliery
Safety in production.When pump drainage coal bed gas and wind row's coal bed gas do not utilize, only for safety in production.Because itself does not have economic benefit
Promote, to be cost-effective during Part Coal Mine actual motion, have idea of leaving things to chance, hidden danger is brought for safety in production, by coal bed gas profit
With rear, itself has an economic benefit, and colliery enthusiasm increases, while promotes safety in production.
Efficiently significant to China's Energy restructuring and environmental protection using low concentration coal-bed gas resource, conventional is low
Concentration coal bed gas method of purification has low-temperature liquefaction method, pressure swing adsorption method, membrane separation process etc..Compared with the separation method of routine,
Gas hydrate method separating low concentration coal bed gas has the advantages that gas storage rate is high, raw material are simple, reusable edible, has good
Application prospect.
The content of the invention
The present invention is a kind of nano-graphite fluid for being used to strengthen coal bed gas purification, and patent of the present invention has coupled suction-operated
With gas aquation, a kind of preparation method of novel porous nano-fluid is invented, and nano-fluid is used for low concentration coal
Layer air lift is pure, strengthens purification technique so as to extend a kind of new low concentration coal-bed gas.It is low using the method separation of the present invention
Concentration coal bed gas, not only have the advantages that gas storage rate is high, raw material are simple, reusable edible, higher CH can also be obtained4Return
Yield and separative efficiency.
For achieving the above object, a kind of nano-graphite fluid for being used to strengthen coal bed gas purification of the invention, it is described
The raw material of nano-graphite fluid is nano-graphite particle, base fluid, dispersant and thermodynamics additive, the system of nano-graphite fluid
Preparation Method is to disperse nano-graphite particle, base fluid, dispersant, thermodynamics additive by mechanical agitation and ultrasonic wave separating apparatus
It is prepared into nano-graphite fluid and produces adsorbent, churned mechanically mixing speed is 200r/min, the power of ultrasonic wave separating apparatus
For 0.08kw, nano-graphite particle, base fluid, dispersant, the mass ratio of thermodynamics additive are 0.26：246：0.13：9.9；Institute
It is lauryl sodium sulfate to state dispersant, and the thermodynamics additive is tetrahydrofuran, pentamethylene, hexamethylene and tetrabutyl phosphonium bromide
At least one of ammonium, the preparation method of the nano-graphite particle are that graphite is carried out into ball milling in liquid CO 2, are ground
Be carefully 0.1-0.2mm to particle diameter, then will be levigate after graphite pressurizeed at normal temperatures with liquid CO 2, being forced into pressure is
20-30 atmospheric pressure, places 30-45min at this pressure, then heats to 150-200 DEG C, in 3min by pressure discharge to
Normal pressure, nano-graphite particle is obtained, the particle diameter of nano-graphite particle is 20-80nm.
The base fluid is deionized water.
The mass ratio of graphite and liquid CO 2 after levigate is 1-5：20.
Technique when nano-graphite fluid is used to strengthen coal bed gas purification is that coal bed gas is retracted to equipped with nano-graphite stream
In the container of body, using cryogenic high pressure by CH therein4Hydrate is formed with nano-graphite fluid, temperature now is 4 DEG C, pressure
Power is 3.6MPa, and then loss comes out other gases, will be with CH4The nano-graphite fluid for forming hydrate passes through high temperature and subtracted again
Pressure and from nano-graphite fluid loss come out, collect the CH of loss4, nano-graphite fluid Returning container after separation of methane after
It is continuous to use.
The shortcomings of low gas storage rate, low separation efficiency, high separation costs, gas be present in traditional low concentration coal-bed gas separation method
Gas hydrate method separating low concentration coal bed gas has the advantages that gas storage rate is high, raw material are simple, reusable edible, present invention coupling
Low concentration coal-bed gas absorption method and hydrate, have invented a kind of new porous graphite nano-fluid so that solution-air contacts
Face greatly increases, and enhances to CH in coal bed gas4Suction-operated, enhance the Mass and heat transfer in coal bed gas purification process, promote
Enter the generation of gas hydrate, so as to drastically increase the gas storage rate of methane in hydrate phase, improve CH4The rate of recovery and
Separative efficiency.The present invention is combined with adsorption separation technology, makes full use of suction-operated and the nanometer stream of nano-graphite particle
The disturbance of hydrate formation in body so that CH in liquid phase4Content further improves, and improves CH4Organic efficiency.
Due to absorption of the nano-graphite to methane gas, solubilization of the nano-graphite fluid to methane gas so that water
Compound growing amount increases, and the content of methane greatly improves in hydrate, and then causes CH4Organic efficiency greatly increases；By receiving
Meter Shi Mo constructs nanoporous medium system, equivalent to gas-liquid interface is added, improves the formation efficiency of hydrate, most
Methane recovery in low concentration coal-bed gas is promoted to greatly increase eventually.
The beneficial effects of the invention are as follows：Recovery method is simple, and cost is low, and methane recovery is significantly in low concentration coal-bed gas
Increase.
Embodiment
With reference to embodiment, the present invention is further detailed explanation.
A kind of nano-graphite fluid for being used to strengthen coal bed gas purification, the raw material of the nano-graphite fluid is nano-graphite
Particle, base fluid, dispersant and thermodynamics additive, the preparation method of nano-graphite fluid be by nano-graphite particle, base fluid,
Dispersant, thermodynamics additive are prepared into nano-graphite fluid and produce absorption by the way that mechanical agitation and ultrasonic wave separating apparatus are scattered
Agent, churned mechanically mixing speed are 200r/min, and the power of ultrasonic wave separating apparatus is 0.08kw, nano-graphite particle, base fluid,
Dispersant, the mass ratio of thermodynamics additive are 0.26：246：0.13：9.9；The dispersant is lauryl sodium sulfate, institute
It is tetrahydrofuran to state thermodynamics additive, and the preparation method of the nano-graphite particle is to enter graphite in liquid CO 2
Row ball milling, it is levigate to particle diameter be 0.1-0.2mm, then will be levigate after graphite pressurizeed at normal temperatures with liquid CO 2, add
It is 20-30 atmospheric pressure to be depressed into pressure, places 30-45min at this pressure, then heats to 150-200 DEG C, will in 3min
Pressure is discharged to normal pressure, obtains nano-graphite particle, the particle diameter of nano-graphite particle is 20-80nm.
The base fluid is deionized water.
The mass ratio of graphite and liquid CO 2 after levigate is 1-5：20.
Technique when nano-graphite fluid is used to strengthen coal bed gas purification is that coal bed gas is retracted to equipped with nano-graphite stream
In the container of body, using cryogenic high pressure by CH therein4Gas hydrate is formed with nano-graphite fluid, temperature now is 4
DEG C, pressure 3.6MPa, and N2、O2Deng other gases, then loss comes out, will be with CH4Form the nano-graphite fluid of hydrate again
By heating up and depressurizing the CH so that being enriched with4Loss comes out from nano-graphite fluid, collects the CH of loss4, separation of methane
Nano-graphite fluid afterwards is returned and is continuing with.
Embodiment 1
A kind of nano-graphite fluid for being used to strengthen coal bed gas purification, the raw material of the nano-graphite fluid is nano-graphite
Particle, base fluid, dispersant and thermodynamics additive, the preparation method of nano-graphite fluid be by nano-graphite particle, base fluid,
Dispersant, thermodynamics additive are prepared into nano-graphite fluid and produce absorption by the way that mechanical agitation and ultrasonic wave separating apparatus are scattered
Agent, churned mechanically mixing speed are 200r/min, and the power of ultrasonic wave separating apparatus is 0.08kw, nano-graphite particle, base fluid,
Dispersant, the mass ratio of thermodynamics additive are 0.26：246：0.13：9.9；The dispersant is lauryl sodium sulfate, institute
It is tetrahydrofuran to state thermodynamics additive, and the preparation method of the nano-graphite particle is to enter graphite in liquid CO 2
Row ball milling, it is levigate to particle diameter be 0.15mm, then will be levigate after graphite pressurizeed at normal temperatures with liquid CO 2, be forced into
Pressure is 25 atmospheric pressure, places 42min at this pressure, then heats to 185 DEG C, discharges pressure to normal in 3min
Pressure, obtains nano-graphite particle, the particle diameter of nano-graphite particle is 50nm.
The base fluid is deionized water.
The mass ratio of graphite and liquid CO 2 after levigate is 2.5：20.
Technique when nano-graphite fluid is used to strengthen coal bed gas purification is that coal bed gas is retracted to equipped with nano-graphite stream
In the container of body, using cryogenic high pressure by CH therein4Gas hydrate is formed with nano-graphite fluid, temperature now is 4
DEG C, pressure 3.6MPa, and N2、O2Deng other gases, then loss comes out, will be with CH4Form the nano-graphite fluid of hydrate again
By heating up and depressurizing the CH for causing to be enriched with4Loss comes out from nano-graphite fluid, collects the CH of loss4, after separation of methane
Nano-graphite fluid is returned and is continuing with.
Embodiment 2
A kind of nano-graphite fluid for being used to strengthen coal bed gas purification, the raw material of the nano-graphite fluid is nano-graphite
Particle, base fluid, dispersant and thermodynamics additive, the preparation method of nano-graphite fluid be by nano-graphite particle, base fluid,
Dispersant, thermodynamics additive are prepared into nano-graphite fluid and produce absorption by the way that mechanical agitation and ultrasonic wave separating apparatus are scattered
Agent, churned mechanically mixing speed are 200r/min, and the power of ultrasonic wave separating apparatus is 0.08kw, nano-graphite particle, base fluid,
Dispersant, the mass ratio of thermodynamics additive are 0.26：246：0.13：9.9；The dispersant is lauryl sodium sulfate, institute
It is tetrahydrofuran to state thermodynamics additive, and the preparation method of the nano-graphite particle is to enter graphite in liquid CO 2
Row ball milling, it is levigate to particle diameter be 0.15mm, then will be levigate after graphite pressurizeed at normal temperatures with liquid CO 2, be forced into
Pressure is 24 atmospheric pressure, places 39min at this pressure, then heats to 185 DEG C, discharges pressure to normal in 3min
Pressure, obtains nano-graphite particle, the particle diameter of nano-graphite particle is 50nm.
The base fluid is deionized water.
The mass ratio of graphite and liquid CO 2 after levigate is 2.1：20.
Technique when nano-graphite fluid is used to strengthen coal bed gas purification is that coal bed gas is retracted to equipped with nano-graphite stream
In the container of body, using cryogenic high pressure by CH therein4Hydrate is formed with nano-graphite fluid, temperature now is 4 DEG C, pressure
Power is 3.6MPa, and then loss comes out other gases, will be with CH4The nano-graphite fluid for forming hydrate passes through high temperature and subtracted again
Pressure causes the CH of enrichment4Loss comes out from nano-graphite fluid, collects the CH of loss4, the nano-graphite fluid after separation of methane
Return is continuing with.
Embodiment 3
A kind of nano-graphite fluid for being used to strengthen coal bed gas purification, the raw material of the nano-graphite fluid is nano-graphite
Particle, base fluid, dispersant and thermodynamics additive, the preparation method of nano-graphite fluid be by nano-graphite particle, base fluid,
Dispersant, thermodynamics additive are prepared into nano-graphite fluid and produce absorption by the way that mechanical agitation and ultrasonic wave separating apparatus are scattered
Agent, churned mechanically mixing speed are 200r/min, and the power of ultrasonic wave separating apparatus is 0.08kw, nano-graphite particle, base fluid,
Dispersant, the mass ratio of thermodynamics additive are 0.26：246：0.13：9.9；The dispersant is lauryl sodium sulfate, institute
It is tetrahydrofuran to state thermodynamics additive, and the preparation method of the nano-graphite particle is to enter graphite in liquid CO 2
Row ball milling, it is levigate to particle diameter be 0.15mm, then will be levigate after graphite pressurizeed at normal temperatures with liquid CO 2, be forced into
Pressure is 25 atmospheric pressure, places 39min at this pressure, then heats to 180 DEG C, discharges pressure to normal in 3min
Pressure, obtains nano-graphite particle, the particle diameter of nano-graphite particle is 50nm.
The base fluid is deionized water.
The mass ratio of graphite and liquid CO 2 after levigate is 3.5：20.
Technique when nano-graphite fluid is used to strengthen coal bed gas purification is that coal bed gas is retracted to equipped with nano-graphite stream
In the container of body, using cryogenic high pressure by CH therein4Hydrate is formed with nano-graphite fluid, temperature now is 4 DEG C, pressure
Power is 3.6MPa, and then loss comes out other gases, will be with CH4The nano-graphite fluid for forming hydrate passes through high temperature and subtracted again
Pressure causes the CH of enrichment4Loss comes out from nano-graphite fluid, collects the CH of loss4, the nano-graphite fluid after separation of methane
Return is continuing with.
The optimal result finally given is as follows：
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent substitution, and without departing from the objective and scope of technical solution of the present invention, it all should cover at this
Among the right of invention.
Claims (4)
- A kind of 1. nano-graphite fluid for being used to strengthen coal bed gas purification, it is characterised in that the raw material of the nano-graphite fluid For nano-graphite particle, base fluid, dispersant and thermodynamics additive, the preparation method of nano-graphite fluid is by nano-graphite Particle, base fluid, dispersant, thermodynamics additive are prepared into nano-graphite fluid by the way that mechanical agitation and ultrasonic wave separating apparatus are scattered Produce adsorbent, churned mechanically mixing speed is 200r/min, and the power of ultrasonic wave separating apparatus is 0.08kw, nano-graphite Grain, base fluid, dispersant, the mass ratio of thermodynamics additive are 0.26：246：0.13：9.9；The dispersant is dodecyl sulphur Sour sodium, the thermodynamics additive are at least one of tetrahydrofuran, pentamethylene, hexamethylene and TBAB, described The preparation method of nano-graphite particle is that graphite carried out into ball milling in liquid CO 2, it is levigate to particle diameter be 0.1-0.2mm, Then the graphite after will be levigate pressurizes at normal temperatures with liquid CO 2, and it is 20-30 atmospheric pressure to be forced into pressure, is pressed herein 30-45min is placed under power, then heats to 150-200 DEG C, pressure is discharged to normal pressure in 3min, obtains nano-graphite Grain, the particle diameter of nano-graphite particle is 20-80nm.
- A kind of 2. nano-graphite fluid for being used to strengthen coal bed gas purification as claimed in claim 1, it is characterised in that the base Liquid is deionized water.
- 3. a kind of nano-graphite fluid for being used to strengthen coal bed gas purification as claimed in claim 1, it is characterised in that after levigate Graphite and the mass ratio of liquid CO 2 be 1-5：20.
- A kind of 4. nano-graphite fluid for being used to strengthen coal bed gas purification as claimed in claim 1, it is characterised in that nanometer stone Technique when black fluid is used to strengthen coal bed gas purification uses for coal bed gas is retracted in the container equipped with nano-graphite fluid Cryogenic high pressure is by CH therein4Hydrate is formed with nano-graphite fluid, temperature now is 4 DEG C, pressure 3.6MPa, and its Then loss comes out his gas, will be with CH4The nano-graphite fluid for forming hydrate causes the CH of enrichment by high temperature and decompression again4 Loss comes out from nano-graphite fluid, collects the CH of loss4, the nano-graphite fluid after separation of methane, which returns, to be continuing with.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108410528A (en) * | 2018-05-30 | 2018-08-17 | 河南理工大学 | It is a kind of to be used to improve natural biomass solution of gas hydration rate and preparation method thereof |
| CN108728194A (en) * | 2018-06-04 | 2018-11-02 | 河南理工大学 | A kind of teas leaching liquor and preparation method and purposes for strengthening coal bed gas purification |
| CN108865309A (en) * | 2018-05-30 | 2018-11-23 | 河南理工大学 | A kind of heterogeneous fiber-like suspension for promoting coal bed gas to separate |
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| CN108865309A (en) * | 2018-05-30 | 2018-11-23 | 河南理工大学 | A kind of heterogeneous fiber-like suspension for promoting coal bed gas to separate |
| CN108410528B (en) * | 2018-05-30 | 2020-11-24 | 河南理工大学 | Natural biomass solution for improving gas hydration rate and preparation method thereof |
| CN108728194A (en) * | 2018-06-04 | 2018-11-02 | 河南理工大学 | A kind of teas leaching liquor and preparation method and purposes for strengthening coal bed gas purification |
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| CN107400542B (en) | 2020-05-29 |
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