CN103437802A - Solution composition method for removing gas with liquid nitrogen and using method - Google Patents
Solution composition method for removing gas with liquid nitrogen and using method Download PDFInfo
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Abstract
The invention relates to a solution composition method for removing gas with liquid nitrogen and a using method. A solution comprises, by weight, 34%-38% of acetic acid, 31%-36% of white spirit, 23%-29% of animal and vegetable oil, 5%-9% of yeast extract powder and 4%-7% cobalt carbonate, and the sum of the percentage by weight of all components is 100%. The concept of passive prevention and treatment in the prior art is thoroughly changed. The solution composition method and the using method belong to the scope of active prevention and treatment, the gas is fundamentally treated, namely the gas is treated when coal is not mined, drilling from the ground is carried out when mine construction is carried out, gas removing liquid enables coal seams to be capable of effectively resolving the gas of a coal mine under initial conditions, the concentration of the gas of the coal mine is reduced, the gas is treated to be within a safe scope, and the personal safety of mining workers is guaranteed.
Description
Technical field
The present invention relates to coal mine gas technology for eliminating field, especially a kind of solution compound formulation and using method of eliminating gas with liquid nitrogen.
Background technology
Coal is the important basic energy resource of China, account for 70% left and right of national primary energy consumption, there is important strategic position in national economy, since reform and opening-up, coal industry has obtained tremendous development, the output sustainable growth, production technology level progressively improves, safety production condition makes moderate progress, but still exist extensive pattern of economic growth, security incident is multiple, serious waste of resources, the problems such as environmental improvement hysteresis, particularly the multiple problem of security incident makes common people pay close attention to, in State owned coal mine, nearly half is high fiery colliery and Gas Outburst mine, highly gassy mine accounts for more than 56% of domestic mine, Huainan particularly, Huaibei Mining Affairs Bureau, table mountain, Henan mines office, Tongchuan, Shaanxi Province mineral bureau and Sichuan, Yunnan, the mines such as Guizhou, be subject to the harm of gas quite serious, and along with the continuous expansion of pit mining scope and the increase of mining depth, the harm of gas will be more and more serious.
All kinds of gas burst accidents of annual generation more than 100 time, because the genesis mechanism to major casualty is not yet grasped, particularly in the prediction of coal and Gas Outburst, the aspects such as monitoring, also have many problems to further investigate and to explore, can't fundamentally stop the generation of Coal Mine Disasters, gas explosion, Gas Outburst is the biggest threat of Safety of Coal Mine Production, it is the most scabrous global problem of headache in colliery, various places, once gas accident occurs, the serious accident that the dead group of group hinders often, China is coal production big country, statistics shows, the murderous number of annual this accident of invar of China accounts for more than 15% of colliery death toll at present, economic loss is big, political fallout be badly that other accident is incomparable, each colliery is placed on gas control the first place of trouble free service invariably, do not stint at manpower, material resources, input on financial resources, but regulation effect is still undesirable.
Gas is that archaeophyte is at the initial stage of piling up coal-forming, cellulose and the organic effect through anaerobic bacteria decomposition form, at high temperature, in the environment of high pressure, in coal-forming, due to the physics and chemistry effect, continue to generate gas, gas is colourless, tasteless, the gas of odorless, main component is alkane, wherein methane accounts for the overwhelming majority, a small amount of ethane is separately arranged, propane and butane, generally also contain in addition hydrogen sulfide, carbon dioxide, nitrogen and aqueous vapor, and the inert gas of trace, as helium and argon etc., gas is insoluble in water, not combustion-supportingly can not maintain breathing, while reaching finite concentration, can make the people suffocate because of anoxic, and burning or blast (explosion limit is 5-16%) can occur, the free gaseous state gas of part dissolves in coal body, the free gaseous state gas of part adheres to the coal body surface, become non-free solid-state gas, it is free state gas gas that gas in coal seam only has 10-15%, 85-90% is non-free state adsorption gas.
In existing technology, colliery is aspect improvement gas, except normal reinforcement gas monitor monitoring, the one, the air quantity of increase job site, utilize fresh air to water down gas, but air quantity neither unconfinedly increase, when air quantity acquires a certain degree, wind speed is crossed conference the dust of job site, coal dust is blown afloat, and causes working environment and health of human body to suffer damage, and easily causes potential safety hazard.Therefore, it is conditional adopting the increase air quantity to water down gas, the 2nd, gas is carried out to extraction, the method drawn out methane at present is a lot, the local gas extraction, the stope upper corner, grouting lane and the extraction of high-order lane, adopt, dig that work plane is taken out in advance in advance and full Mine Integrated gas drainage under suction etc.The method that prior art is administered gas is passive control, as gas in coal seam is carried out to extraction, the gas of releasing will pass through pipeline, drainage pump etc., and the gas that does not simultaneously reach the generating requirement can only be discharged in surface air, not only environment is impacted, also have potential safety hazard simultaneously.
The gas that the patent document that application number is 200410048015.1 has been announced a kind of outstanding improvement method of coal mine gas from explosion and adapted thereof the solvent that disappears, its gas solvent that disappears is the aqueous solution that acetic acid and yeast form, the Main Ingredients and Appearance of coal mine gas is methane (CH4), though it is the simplest a kind of organic compound, but because of its molecular structure stabilized torpescence, be difficult for and other material generation physical and chemical effects under normal circumstances, only under HTHP could with Cucumber composition generation chemical action, the down-hole mining work plane is difficult to form hot conditions, can only be under the condition of high pressure by the catalysis hydrotropy effect of catalyzer and cosolvent, just likely impel methane and other material composition generation physical and chemical reaction, reach the purpose of the molten methane that disappears, therefore, only the effect with acetic acid and yeast is to be difficult to well complete the molten effect that disappears to gas.
In view of the foregoing, now invent out a kind of solution compound formulation and using method of eliminating gas with liquid nitrogen, can effectively decompose coal mine gas, reduce coal mine gas concentration, gas control, in safe range, is guaranteed to mining work personnel's personal safety.
Summary of the invention
The objective of the invention is in order to overcome deficiency of the prior art, a kind of solution compound formulation and using method of eliminating gas with liquid nitrogen is provided, can effectively decomposes coal mine gas, reduce coal mine gas concentration, gas control, in safe range, is guaranteed to mining work personnel's personal safety.
The present invention to achieve these goals, adopt following technical scheme: a kind of solution compound formulation and using method of eliminating gas with liquid nitrogen, the assembly percentage by weight is, acetic acid 34-38%, white wine 31-36%, vegetable and animals oils 23-29%, yeast soaks powder 5-9%, cobalt carbonate 4-7%, above each component sum by weight ratio is 100%.
The assembly percentage by weight is, acetic acid 35-38%, and white wine 33-36%, vegetable and animals oils 27-29%, yeast soaks powder 5-7%, cobalt carbonate 4-6%, above each component sum by weight ratio is 100%.
The assembly percentage by weight is, acetic acid 35-37%, and white wine 32-35%, vegetable and animals oils 25-27%, yeast soaks powder 5-7%, cobalt carbonate 5-7%, above each component sum by weight ratio is 100%.
The assembly percentage by weight is, acetic acid 36-38%, and white wine 34-36%, vegetable and animals oils 27-29%, yeast soaks powder 6-7%, cobalt carbonate 6-7%, above each component sum by weight ratio is 100%.
The assembly percentage by weight is, the preferred 34-36% of acetic acid, and the preferred 32-34% of white wine, the preferred 25-27% of vegetable and animals oils, yeast soaks the preferred 7-8% of powder, the preferred 5-7% of cobalt carbonate, above each component sum by weight ratio is 100%, standby, at coal body 3-4m
2work plane make a call to two fill orifices, two fill orifices the distance be 2m, the fill orifice aperture is 50-70mm, hole depth 20-40m is fixed in hole packer in fill orifice respectively, presses 1m
3coal adds 0.5-1.2kg gas to eliminate liquid, the gas that calculates the required use of the degree of depth of fill orifice is eliminated liquid and water injection rate, get standby elimination liquid, the 23-32kg that is preferably commonly used, the 10-15 that water is elimination liquid doubly, water injection rate is greater than 3 tons, under high pressure after emulsification, under liquid filling pressure 8-16MPa condition, the gas after emulsification is eliminated to liquid with topping-up pump and inject coal body through hole packer, eliminate liquid until gas and stop injection from rib oozes out, after 1 hour, the nitrogen pressurization is reached to 100bp and form high-pressure liquid nitrogen, the temperature of liquid nitrogen is-186 degree, inject liquid nitrogen 5-8L, liquid nitrogen is replaced as biogas by gas, biogas is outwards gushed out from fill orifice, collect biogas, reaction 6-7 hour, can carry out mining work.
The invention has the beneficial effects as follows: suitable coals stratiform condition, gas spray volume superelevation, water filling is invalid, finds the boring coal powder injection when drilling, stick of tool, the crown drill bar, the prosperous white cigarette of drilling rod, before blowing out, after blowing out, find that gas is suddenly big or suddenly small, banger sound or too little in the driving face amount in rib, can be administered in the present invention.
White wine and vegetable and animals oils contain abundant alcohols, and initial substance and the intermediate product of multiple participation reaction can be provided, and are conducive to the rapid-digestion of methane, transform; Acetic acid can decompose acetic acid, and acetic acid can react with the alcohol in gas and generate ester; Acetic acid is organic acid, the fast breeding that can be conducive to methane-oxidizing bacteria in coal seam, and methane-oxidizing bacteria can directly generate methane oxidation CO2, produce multiple liquid state or material soluble in water after decomposing, as ester class etc., a large amount of methane are converted, and receive, decompose, thereby reduced greatly the content of coal-bed gas; Yeast soaks initial substance and the intermediate product that powder also can provide multiple participation reaction, promotes the carrying out of biochemical reaction, accelerates the speed that chemical reaction carries out simultaneously.
Gas is under the catalytic action of cobalt carbonate, oxygen in gas and coal seam, nitrogen, the gas generation chemical combinations such as carbon dioxide, generate nontoxic liquefied compound, digest and assimilate a large amount of gas in coal seam, the part gas in coal seam is converted, coal seam gas-bearing capacity is reduced in a large number, thereby reduced gas bearing capacity in coal seam; The gas of discharging after reaction mainly contains: oxygen, and nitrogen, carbon dioxide, methane concentration is reduced to 1.5%.
The gas solution that disappears injects coal seam two important function is arranged: the one, infiltrate coal body, and reduce the coal dust producing amount in mining process, to improving working environment, the protection workman is healthy, improve workman's operating efficiency, prevent that coal-dust explosion from playing an important role; The 2nd, water filling can partly reduce the face gas outburst amount, to preventing gas density, transfinites certain effect is arranged.
Nitrogen in colliery, prevent and reduce natural disasters aspect the application more extensive, be mainly used in conflagration area notes nitrogen reduction oxygen content and reach the fire extinguishing purpose, if administer on gas and nitrogen is used in, can effectively reduce gas bearing capacity more than 90%, use the gas pressurized pump, the nitrogen pressurization is reached to the 100bp left and right, make it form high-pressure liquid nitrogen, can form-186 degree low temperature, be injected into bursting by freezing coal body after coal body, or high pressure breaks through coal body, make the saturated rear temporary close valve of pressure, allow high-pressure liquid nitrogen in coal body with the gas form release of volatilizing slowly, and gas is replaced as to biogas, this displacement can will become the biogas of free state in the gas impact activity of adsorbed state in coal body, biogas discharges outside coal body along with the release of nitrogen, this release is conducive to improve the efficiency of distinguished and admirable gas-removing, or be conducive to improve gas drainage under suction efficiency, the 2nd, nitrogen in coal body in dispose procedure with the release of biogas, the nitrogen that relative amount is higher can suppress or reduce the blast boundary line of gas, the 3rd, high-pressure liquid nitrogen can be exerted pressure to coal body in coal body, make it to form malleation, around reducing in coal petrography biogas to the preparing exploit layer coal body, pour in, the 4th, the high-pressure liquid nitrogen temperature is very low, can reach 186 degree, coal body that can be higher to temperature plays cooling effect, nitrogen can reduce the gas bearing capacity 70-95% of coal body.
Above effect makes the large minimizing of coal seam Free Gas state gas bearing capacity, and the power source of Gas Outburst has fundamentally been removed in the large reduction of pressure, and the Gas Outburst problem has obtained solving preferably.
The present invention has thoroughly changed the idea of " passive control " in the prior art, the invention belongs to " Initiative defence " category, fundamentally namely when coal is not yet exploited, gas is administered, just can be from ground drilling in mine construction, gas is eliminated liquid makes coal seam under reset condition, just by gas control in safe range.
The selected raw material of the present invention are the chemical raw material that can buy on market, and raw material is easy to get, cheap; Gas is eliminated liquid reacts produced lipid organic matter with gas, and to be that liquid lipid compounds also belongs to nontoxic, harmless, and human body and environment are all had no effect, and belongs to the green non-pollution product.
The specific embodiment
Below in conjunction with the specific embodiment and embodiment, the present invention is described in further detail:
Embodiment 1
The assembly percentage by weight is, acetic acid 34-38%, and white wine 31-36%, vegetable and animals oils 23-29%, yeast soaks powder 5-9%, cobalt carbonate 4-7%, above each component sum by weight ratio is 100%.
Embodiment 2
The assembly percentage by weight is, acetic acid 35-38%, and white wine 33-36%, vegetable and animals oils 27-29%, yeast soaks powder 5-7%, cobalt carbonate 4-6%, above each component sum by weight ratio is 100%.
Embodiment 3
The assembly percentage by weight is, acetic acid 35-37%, and white wine 32-35%, vegetable and animals oils 25-27%, yeast soaks powder 5-7%, cobalt carbonate 5-7%, above each component sum by weight ratio is 100%.
Embodiment 4
The assembly percentage by weight is, acetic acid 36-38%, and white wine 34-36%, vegetable and animals oils 27-29%, yeast soaks powder 6-7%, cobalt carbonate 6-7%, above each component sum by weight ratio is 100%.
Embodiment 5
The assembly percentage by weight is, the preferred 34-36% of acetic acid, and the preferred 32-34% of white wine, the preferred 25-27% of vegetable and animals oils, yeast soaks the preferred 7-8% of powder, the preferred 5-7% of cobalt carbonate, above each component sum by weight ratio is 100%, standby, at coal body 3-4m
2work plane make a call to two fill orifices, two fill orifices the distance be 2m, the fill orifice aperture is 50-70mm, hole depth 20-40m is fixed in hole packer in fill orifice respectively, presses 1m
3coal adds 0.5-1.2kg gas to eliminate liquid, the gas that calculates the required use of the degree of depth of fill orifice is eliminated liquid and water injection rate, get standby elimination liquid, the 23-32kg that is preferably commonly used, the 10-15 that water is elimination liquid doubly, water injection rate is greater than 3 tons, under high pressure after emulsification, under liquid filling pressure 8-16MPa condition, the gas after emulsification is eliminated to liquid with topping-up pump and inject coal body through hole packer, eliminate liquid until gas and stop injection from rib oozes out, after 1 hour, the nitrogen pressurization is reached to 100bp and form high-pressure liquid nitrogen, the temperature of liquid nitrogen is-186 degree, inject liquid nitrogen 5-8L, liquid nitrogen is replaced as biogas by gas, biogas is outwards gushed out from fill orifice, collect biogas, reaction 6-7 hour, can carry out mining work.
Claims (5)
1. a solution compound formulation of eliminating gas with liquid nitrogen is characterized in that: the assembly percentage by weight is, acetic acid 34-38%, and white wine 31-36%, vegetable and animals oils 23-29%, yeast soaks powder 5-9%, cobalt carbonate 4-7%, above each component sum by weight ratio is 100%.
2. a kind of solution compound formulation of eliminating gas with liquid nitrogen according to claim 1 is characterized in that: the assembly percentage by weight is, acetic acid 35-38%, white wine 33-36%, vegetable and animals oils 27-29%, yeast soaks powder 5-7%, cobalt carbonate 4-6%, above each component sum by weight ratio is 100%.
3. a kind of solution compound formulation of eliminating gas with liquid nitrogen according to claim 1 is characterized in that: the assembly percentage by weight is, acetic acid 35-37%, white wine 32-35%, vegetable and animals oils 25-27%, yeast soaks powder 5-7%, cobalt carbonate 5-7%, above each component sum by weight ratio is 100%.
4. a kind of solution compound formulation of eliminating gas with liquid nitrogen according to claim 1 is characterized in that: the assembly percentage by weight is, acetic acid 36-38%, white wine 34-36%, vegetable and animals oils 27-29%, yeast soaks powder 6-7%, cobalt carbonate 6-7%, above each component sum by weight ratio is 100%.
5. a solution using method of eliminating gas with liquid nitrogen, it is characterized in that: the assembly percentage by weight is, the preferred 34-36% of acetic acid, the preferred 32-34% of white wine, the preferred 25-27% of vegetable and animals oils, yeast soaks the preferred 7-8% of powder, the preferred 5-7% of cobalt carbonate, above each component sum by weight ratio is 100%, standby, at coal body 3-4m
2work plane make a call to two fill orifices, two fill orifices the distance be 2m, the fill orifice aperture is 50-70mm, hole depth 20-40m is fixed in hole packer in fill orifice respectively, presses 1m
3coal adds 0.5-1.2kg gas to eliminate liquid, the gas that calculates the required use of the degree of depth of fill orifice is eliminated liquid and water injection rate, get standby elimination liquid, the 23-32kg that is preferably commonly used, the 10-15 that water is elimination liquid doubly, water injection rate is greater than 3 tons, under high pressure after emulsification, under liquid filling pressure 8-16MPa condition, the gas after emulsification is eliminated to liquid with topping-up pump and inject coal body through hole packer, eliminate liquid until gas and stop injection from rib oozes out, after 1 hour, the nitrogen pressurization is reached to 100bp and form high-pressure liquid nitrogen, the temperature of liquid nitrogen is-186 degree, inject liquid nitrogen 5-8L, liquid nitrogen is replaced as biogas by gas, biogas is outwards gushed out from fill orifice, collect biogas, reaction 6-7 hour, can carry out mining work.
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| CN107970745A (en) * | 2017-11-28 | 2018-05-01 | 北京科技大学 | A kind of methane lytic agent for preventing Gas Outburst |
| CN109356642A (en) * | 2018-12-12 | 2019-02-19 | 华夏泓博生物科技有限公司 | A kind of preparation method and applications of gas remover |
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Application publication date: 20131211 |