CN103602339B - High polymer-based stopping agent for inhibiting spontaneous combustion of brown coal dump and preparation method of high polymer-based stopping agent - Google Patents
High polymer-based stopping agent for inhibiting spontaneous combustion of brown coal dump and preparation method of high polymer-based stopping agent Download PDFInfo
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Abstract
The invention relates to a high polymer-based stopping agent for inhibiting spontaneous combustion of brown coal dump and a preparation method of the high polymer-based stopping agent. At present, a high polymer-based stopping agent which can effectively inhibit a spontaneous combustion behavior of the brown coal in the storage process as well as a preparation method of the high polymer-based stopping agent do not exist. The high polymer-based stopping agent comprises 1-30 parts of high polymer material, 0.05-2 parts of dispersing agent, 0.5-40 parts of penetrating agent, 0.1-5 parts of film-forming agent and 33-98.35 parts of solvent. The preparation method comprises the following steps: dispersing the high polymer material into the solvent, continuously stirring, sequentially adding the dispersing agent, the penetrating agent and the film-forming agent into the solvent, continuously stirring to obtain a transparent solution, and preparing the high polymer-based stopping agent. The high polymer-based stopping agent can effectively inhibit the spontaneous combustion behavior of the brown coal in the storage process, the combustion characteristics of the brown coal are not influenced, any toxic or harmful gas is not generated, raised dust is effectively inhibited, and the spontaneous combustion of the brown coal dump is inhibited.
Description
Technical field
The present invention relates to a kind of polymer-based stopping agent and preparation method thereof, especially relate to a kind of polymer-based stopping agent suppressing brown coal self-ignition of coal pile and preparation method thereof, belong to technical field of material.
Background technology
The spontaneous combustion of coal can cause great security incident and financial loss to the storage of coal and transport, due to the oxidizing reaction of the oxygen generation heat release of coal easily and in air, if oxidation of coal liberated heat can not be delivered in its surrounding environment in time, so oxidizing reaction will be aggravated, and causes the temperature of coal to improve further.Under these conditions, the thermal runaway that will cause danger of the coal body of certain accumulation body and cause freely burning fire.Especially brown coal, its firing point is low, as easy as rolling off a log generation spontaneous combustion.Therefore, the spontaneous combustion of coal how is suppressed to cause the extensive concern of the using coal enterprise such as generating, steel-making and ferry, train Deng Yun coal enterprise.
At present, conventional fire retardant mainly contains halogen fire retardant (as: CaCl
2, MgCl
2deng), ammonium salt fire retardant (as: Ammonium bicarbonate food grade, ammonium chloride etc.), calcium hydroxide fire retardant, Silica hydrogel and high polymer flame retardant etc., in recent years, there is again new type gel fire retardant, novel foam fire retardant etc.
Halogen fire retardant has very strong water-absorbent, coal can be made to be in moist state for a long time, form water film on the surface of coal, stop and weaken oxidation of coal, simultaneously this part water also plays the effect of cooling, but, the use of halogen to boiler and equipment corrosion of piping very serious.Ammonium salt fire retardant decomposes, except the heat can drawing coal body also can produce NH simultaneously
3and CO
2deng gas, NH
3the free radical in oxidation of coal chain reaction can be caught, play the effect suppressing coal combustion, in addition, CO
2the oxygen concn on coal body surface can be diluted Deng rare gas element, but, decompose the NH produced
3deng gas harmful, pollution is caused to environment, if publication date is on 07 04th, 2012, publication number is in the Chinese patent of CN102532600A, disclose a kind of melamine salt fire retardant, this fire retardant is the phosphonic acids melamine salt containing tetrahydrofuran (THF) ring structure, and namely this fire retardant just belongs to ammonium salt fire retardant.The use of the alkaline-earth metal such as calcium hydroxide fire retardant, inappropriate use may cause the reduction etc. of coal ash fusion temperature, is unfavorable for the safe operation of coal firing boiler.
Comparatively speaking, emerging compound, high molecular polymer type, gelatinous fire retardant have the feature of environmental protection, efficient, stable performance in recent years, but expense is also relatively high.Also there is no a kind of spontaneous combustion behavior that can effectively suppress brown coal in storage process at present, and do not affect brown coal combustion characteristic, do not produce any toxic and harmful, effectively suppress polymer-based stopping agent of the suppression brown coal self-ignition of coal pile of the features such as airborne dust and preparation method thereof.
Summary of the invention
The object of the invention is to overcome above shortcomings in prior art, and a kind of spontaneous combustion behavior that can effectively suppress brown coal in storage process is provided, and do not affect brown coal combustion characteristic, do not produce any toxic and harmful, effectively suppress polymer-based stopping agent of the suppression brown coal self-ignition of coal pile of the features such as airborne dust and preparation method thereof.
The present invention's adopted technical scheme that solves the problem is: the feature of the polymer-based stopping agent of this suppression brown coal self-ignition of coal pile is: the solvent comprising macromolecular material that parts by weight are 1-30 part, the dispersion agent of 0.05-2 part, the permeate agent of 0.5-40 part, the membrane-forming agent of 0.1-5 part and 33-98.35 part.Make the polymer-based stopping agent in the present invention effectively can contain the spontaneous combustion behavior of brown coal in storage process thus.
As preferably, macromolecular material of the present invention is one in polyethylene, polyacrylic ester, ethylene vinyl acetate polymer, polyvinyl acetal and ethylene-octene copolymer or two or more mixture.
As preferably, dispersion agent of the present invention is one in Sodium dodecylbenzene sulfonate, α-sodium olefin sulfonate and polyoxyethylene or two or more mixture.
As preferably, permeate agent of the present invention is one in polyoxyethylene lauryl ether, polyoxyethylene nonyl phenol ether, fatty alcohol-polyoxyethylene ether and amber acid ester sodium sulfonate or two or more mixture.
As preferably, membrane-forming agent of the present invention is Lauryl Alcohol ester.
As preferably, solvent of the present invention is water.
A kind of preparation method suppressing the polymer-based stopping agent of brown coal self-ignition of coal pile, its feature is: be first distributed in solvent by macromolecular material, continuously stirring, then in solvent, dispersion agent, permeate agent and membrane-forming agent is added successively, continue to be stirred to acquisition clear solution, thus obtained polymer-based stopping agent.Make technique of the present invention simple thus, preparation easily.
As preferably, the polymerization degree of macromolecular material of the present invention is greater than 5000.
As preferably, in the whole preparation process of the present invention, the temperature of described solvent is 10-80 DEG C.
The present invention compared with prior art, has the following advantages and effect: (1), under the synergy of macromolecular material, dispersion agent, permeate agent and membrane-forming agent, the polymer-based stopping agent in the present invention effectively can contain the spontaneous combustion behavior of brown coal in storage process.(2) the polymer-based stopping agent in the present invention does not affect the combustion characteristic of brown coal, can decompose completely, be conducive to the safe operation of boiler at about 500 DEG C.(3) the polymer-based stopping agent in the present invention does not in use produce any toxic and harmful, is conducive to the environment protection around using coal enterprise.(4) the polymer-based stopping agent in the present invention in use effectively can suppress airborne dust, improves Working environment.(5) the polymer-based stopping agent in the present invention does not affect the combustion characteristic of brown coal.
Suppress the technique of the preparation method of the polymer-based stopping agent of brown coal self-ignition of coal pile simple in the present invention, processing ease, energy consumption is low, does not produce any toxic and harmful, be conducive to energy-conserving and environment-protective in production process.
Embodiment
Below by embodiment, the present invention is described in further detail, and following examples are explanation of the invention and the present invention is not limited to following examples.
Embodiment 1.
The permeate agent that the dispersion agent that to suppress the polymer-based stopping agent of brown coal self-ignition of coal pile to comprise parts by weight in the present embodiment be macromolecular material, the parts by weight of 30 parts is 0.05 part, parts by weight are 10 parts, parts by weight to be the membrane-forming agent of 4 parts and parts by weight the be solvent of 50 parts, wherein, macromolecular material is polyethylene, dispersion agent is Sodium dodecylbenzene sulfonate, permeate agent is polyoxyethylene lauryl ether, membrane-forming agent is Lauryl Alcohol ester, and solvent is water.The preparation method of the polymer-based stopping agent of brown coal self-ignition of coal pile is suppressed to be in the present embodiment: to be first distributed in solvent by macromolecular material, continuously stirring 0.5h, then in solvent, dispersion agent, permeate agent and membrane-forming agent is slowly added successively, continue to stir 0.5h and obtain clear solution, obtained polymer-based stopping agent.The polymerization degree of the macromolecular material that the present embodiment is used is greater than 5000, and in whole preparation process, the temperature of solvent is 10 DEG C, and this temperature can use water-bath to carry out computer heating control.
Suppress the polymer-based stopping agent of brown coal self-ignition of coal pile can comprise the macromolecular material that parts by weight are 1-30 part in the present invention, parts by weight are the dispersion agent of 0.05-2 part, parts by weight are the permeate agent of 0.5-40 part, the solvent of parts by weight to be the membrane-forming agent of 0.1-5 part and parts by weight be 33-98.35 part, wherein, macromolecular material can be polyethylene, polyacrylic ester, ethylene vinyl acetate polymer, one in polyvinyl acetal and ethylene-octene copolymer or two or more mixture, dispersion agent can be Sodium dodecylbenzene sulfonate, one in α-sodium olefin sulfonate and polyoxyethylene or two or more mixture, permeate agent can be polyoxyethylene lauryl ether, polyoxyethylene nonyl phenol ether, one in fatty alcohol-polyoxyethylene ether and amber acid ester sodium sulfonate or two or more mixture, membrane-forming agent can be Lauryl Alcohol ester, solvent can be water.
The preparation method of the polymer-based stopping agent of brown coal self-ignition of coal pile is suppressed to be in the present invention: to be first distributed in solvent by macromolecular material, continuously stirring 0.3-1h, be preferably 0.5h, then in solvent, dispersion agent, permeate agent and membrane-forming agent is slowly added successively, continue to be stirred to acquisition clear solution, usual churning time is 0.3-1h, is preferably 0.5h, obtained polymer-based stopping agent.The polymerization degree of the macromolecular material that the present embodiment is used is preferably greater than 5000, and in whole preparation process, the temperature of solvent is usually at 10-80 DEG C, and this temperature can use water-bath to carry out computer heating control.
Embodiment 2.
Suppress the polymer-based stopping agent of brown coal self-ignition of coal pile to comprise in the present embodiment solvent that parts by weight are the macromolecular material of 20 parts, the dispersion agent of 0.1 part, the permeate agent of 40 parts, the membrane-forming agent of 1 part and 90 parts, wherein, macromolecular material is polyacrylic ester, dispersion agent is α-sodium olefin sulfonate, permeate agent is amber acid ester sodium sulfonate, membrane-forming agent is Lauryl Alcohol ester, and solvent is water.
The preparation method of the polymer-based stopping agent of brown coal self-ignition of coal pile is suppressed to be in the present embodiment: to be first distributed in solvent by macromolecular material, continuously stirring 0.3, then in solvent, dispersion agent, permeate agent and membrane-forming agent is slowly added successively, continue to be stirred to acquisition clear solution, obtained polymer-based stopping agent.The polymerization degree of the macromolecular material that the present embodiment is used is preferably greater than 5000, and in whole preparation process, the temperature of solvent is 30 DEG C, and this temperature can use water-bath to carry out computer heating control.
Embodiment 3.
Suppress the polymer-based stopping agent of brown coal self-ignition of coal pile to comprise in the present embodiment solvent that parts by weight are the macromolecular material of 15 parts, the dispersion agent of 2 parts, the permeate agent of 5 parts, the membrane-forming agent of 0.1 part and 39 parts, wherein, macromolecular material is ethylene vinyl acetate polymer, dispersion agent is polyoxyethylene, permeate agent is fatty alcohol-polyoxyethylene ether, membrane-forming agent is Lauryl Alcohol ester, and solvent is water.
The preparation method of the polymer-based stopping agent of brown coal self-ignition of coal pile is suppressed to be in the present embodiment: to be first distributed in solvent by macromolecular material, continuously stirring 1h, then in solvent, dispersion agent, permeate agent and membrane-forming agent is slowly added successively, continue to be stirred to acquisition clear solution, usual churning time is 0.3, obtained polymer-based stopping agent.The polymerization degree of the macromolecular material that the present embodiment is used is preferably greater than 5000, and in whole preparation process, the temperature of solvent is 80 DEG C, and this temperature can use water-bath to carry out computer heating control.
Embodiment 4.
Suppress the polymer-based stopping agent of brown coal self-ignition of coal pile to comprise in the present embodiment solvent that parts by weight are the macromolecular material of 5 parts, the dispersion agent of 0.1 part, the permeate agent of 20 parts, the membrane-forming agent of 5 parts and 63 parts, wherein, macromolecular material is polyvinyl acetal, dispersion agent is Sodium dodecylbenzene sulfonate, permeate agent is polyoxyethylene nonyl phenol ether, membrane-forming agent is Lauryl Alcohol ester, and solvent is water.
The preparation method of the polymer-based stopping agent of brown coal self-ignition of coal pile is suppressed to be in the present embodiment: to be first distributed in solvent by macromolecular material, continuously stirring 0.8h, then in solvent, dispersion agent, permeate agent and membrane-forming agent is slowly added successively, continue to be stirred to acquisition clear solution, usual churning time is 1h, obtained polymer-based stopping agent.The polymerization degree of the macromolecular material that the present embodiment is used is preferably greater than 5000, and in whole preparation process, the temperature of solvent is 50 DEG C, and this temperature can use water-bath to carry out computer heating control.
Embodiment 5.
Suppress the polymer-based stopping agent of brown coal self-ignition of coal pile to comprise in the present embodiment solvent that parts by weight are the macromolecular material of 30 parts, the dispersion agent of 1 part, the permeate agent of 35 parts, the membrane-forming agent of 3 parts and 98.35 parts, wherein, macromolecular material is ethylene-octene copolymer, dispersion agent is α-sodium olefin sulfonate, permeate agent is polyoxyethylene lauryl ether, membrane-forming agent is Lauryl Alcohol ester, and solvent is water.
The preparation method of the polymer-based stopping agent of brown coal self-ignition of coal pile is suppressed to be in the present embodiment: to be first distributed in solvent by macromolecular material, continuously stirring 0.5h, then in solvent, dispersion agent, permeate agent and membrane-forming agent is slowly added successively, continue to be stirred to acquisition clear solution, usual churning time is 0.5h, obtained polymer-based stopping agent.The polymerization degree of the macromolecular material that the present embodiment is used is preferably greater than 5000, and in whole preparation process, the temperature of solvent is 56 DEG C, and this temperature can use water-bath to carry out computer heating control.
Embodiment 6.
Suppress the polymer-based stopping agent of brown coal self-ignition of coal pile to comprise in the present embodiment solvent that parts by weight are the macromolecular material of 20 parts, the dispersion agent of 1.5 parts, the permeate agent of 0.5 part, the membrane-forming agent of 2 parts and 42 parts, wherein, macromolecular material is the mixture of polyethylene and polyacrylic ester, dispersion agent is polyoxyethylene, permeate agent is amber acid ester sodium sulfonate, membrane-forming agent is Lauryl Alcohol ester, and solvent is water.
The preparation method of the polymer-based stopping agent of brown coal self-ignition of coal pile is suppressed to be in the present embodiment: to be first distributed in solvent by macromolecular material, continuously stirring 0.6h, then in solvent, dispersion agent, permeate agent and membrane-forming agent is slowly added successively, continue to be stirred to acquisition clear solution, usual churning time is 0.4h, obtained polymer-based stopping agent.The polymerization degree of the macromolecular material that the present embodiment is used is preferably greater than 5000, and in whole preparation process, the temperature of solvent is 80 DEG C, and this temperature can use water-bath to carry out computer heating control.
Embodiment 7.
Suppress the polymer-based stopping agent of brown coal self-ignition of coal pile to comprise in the present embodiment solvent that parts by weight are the macromolecular material of 18 parts, the dispersion agent of 0.05 part, the permeate agent of 30 parts, the membrane-forming agent of 1.5 parts and 76 parts, wherein, macromolecular material be ethylene vinyl acetate polymer and ethylene-octene copolymer with arbitrarily than mixture, dispersion agent is Sodium dodecylbenzene sulfonate, permeate agent is polyoxyethylene nonyl phenol ether, membrane-forming agent is Lauryl Alcohol ester, and solvent is water.
The preparation method of the polymer-based stopping agent of brown coal self-ignition of coal pile is suppressed to be in the present embodiment: to be first distributed in solvent by macromolecular material, continuously stirring 0.4h, then in solvent, dispersion agent, permeate agent and membrane-forming agent is slowly added successively, continue to be stirred to acquisition clear solution, 4 obtained polymer-based stopping agents.The polymerization degree of the macromolecular material that the present embodiment is used is preferably greater than 5000, and in whole preparation process, the temperature of solvent is 72 DEG C, and this temperature can use water-bath to carry out computer heating control.
Embodiment 8.
Suppress the polymer-based stopping agent of brown coal self-ignition of coal pile to comprise in the present embodiment solvent that parts by weight are the macromolecular material of 25 parts, the dispersion agent of 0.5 part, the permeate agent of 15 parts, the membrane-forming agent of 2.6 parts and 57 parts, wherein, macromolecular material is polyvinyl acetal, dispersion agent is α-sodium olefin sulfonate, permeate agent is fatty alcohol-polyoxyethylene ether, membrane-forming agent is Lauryl Alcohol ester, and solvent is water.
The preparation method of the polymer-based stopping agent of brown coal self-ignition of coal pile is suppressed to be in the present embodiment: to be first distributed in solvent by macromolecular material, continuously stirring 0.45h, then in solvent, dispersion agent, permeate agent and membrane-forming agent is slowly added successively, continue to be stirred to acquisition clear solution, obtained polymer-based stopping agent.The polymerization degree of the macromolecular material that the present embodiment is used is preferably greater than 5000, and in whole preparation process, the temperature of solvent is 46 DEG C, and this temperature can use water-bath to carry out computer heating control.
Embodiment 9.
Suppress the polymer-based stopping agent of brown coal self-ignition of coal pile to comprise in the present embodiment solvent that parts by weight are the macromolecular material of 15 parts, the dispersion agent of 1 part, the permeate agent of 25 parts, the membrane-forming agent of 3.8 parts and 49 parts, wherein, macromolecular material is ethylene vinyl acetate polymer, dispersion agent is polyoxyethylene, permeate agent is polyoxyethylene nonyl phenol ether, membrane-forming agent is Lauryl Alcohol ester, and solvent is water.
The preparation method of the polymer-based stopping agent of brown coal self-ignition of coal pile is suppressed to be in the present embodiment: to be first distributed in solvent by macromolecular material, continuously stirring 0.55h, then in solvent, dispersion agent, permeate agent and membrane-forming agent is slowly added successively, continue to be stirred to acquisition clear solution, usual churning time is 0.5h, obtained polymer-based stopping agent.The polymerization degree of the macromolecular material that the present embodiment is used is preferably greater than 5000, and in whole preparation process, the temperature of solvent is 59 DEG C, and this temperature can use water-bath to carry out computer heating control.
Embodiment 10.
The polymer-based stopping agent of brown coal self-ignition of coal pile is suppressed to comprise the macromolecular material that parts by weight are 1 part in the present embodiment, the dispersion agent of 0.75 part, the permeate agent of 28 parts, the solvent of the membrane-forming agent of 3.6 parts and 50 parts, wherein, macromolecular material is polyethylene, polyacrylic ester and ethylene vinyl acetate polymer with arbitrarily than mixture, dispersion agent is Sodium dodecylbenzene sulfonate, α-sodium olefin sulfonate and polyoxyethylene with arbitrarily than mixture, permeate agent is polyoxyethylene lauryl ether, polyoxyethylene nonyl phenol ether and amber acid ester sodium sulfonate with arbitrarily than mixture, membrane-forming agent is Lauryl Alcohol ester, solvent is water.
The preparation method of the polymer-based stopping agent of brown coal self-ignition of coal pile is suppressed to be in the present embodiment: to be first distributed in solvent by macromolecular material, continuously stirring 0.5h, then in solvent, dispersion agent, permeate agent and membrane-forming agent is slowly added successively, continue to be stirred to acquisition clear solution, usual churning time is 0.5h, obtained polymer-based stopping agent.In the whole preparation process of the present embodiment, the temperature of solvent is 45 DEG C, and this temperature can use water-bath to carry out computer heating control.
The preparation method of coal sample and resistanceization coal sample: first getting particle diameter is 20-40 object brown coal, is dry under the condition of 45-50 DEG C in temperature, when the weight of brown coal is substantially constant, can be used for test.Then, take the polymer-based stopping agent of 9g, be surely dissolved in the volumetric flask of 30mL, be made into diluent, measure 12mL diluent again, add in the dried brown coal sample of 30g, stir, be dry under the condition of 45-50 DEG C again in temperature, after coal sample constant weight, can be used for test.The resistance performance test methods of polymer-based stopping agent is: take 25g coal sample and put into sample hose, the resistance to air loss of check system, be then placed in temperature programming case, pass into dry air with the flow velocity of 100mL/min in sample hose; Temperature programming case is with the ramp to 100 DEG C of 2.5 DEG C/min, and sampling should be carried out, till total time reaches 150min for every 10min afterwards.The WT-80-CO that the CO content that coal sample produces is produced by Shanghai Yi Ren Electric Applicance Co., Ltd analyzes and records, get CO mean value to reflect the resistance voltinism energy of polymer-based stopping agent, adopt aforesaid method can test the resistance voltinism of polymer-based stopping agent obtained in embodiment 1-embodiment 10 respectively, the concentration that embodiment 1 records CO is 45ppm, the concentration that embodiment 2 records CO is 60ppm, the concentration that embodiment 3 records CO is 53ppm, the concentration that embodiment 4 records CO is 95ppm, the concentration that embodiment 5 records CO is 56ppm, the concentration that embodiment 6 records CO is 80ppm, the concentration that embodiment 7 records CO is 72ppm, the concentration that embodiment 8 records CO is 46ppm, the concentration that embodiment 9 records CO is 59ppm, the concentration that embodiment 10 records CO is 62ppm.
Comparative example 1.
Take the dried brown coal of 25 g, through the resistance performance methodology identical with embodiment test, the CO concentration recorded reaches 125 ppm.
Comparative example 2.
Resistance coal sample preparation method as described embodiments, measure 9 g business stopping agents (FR-757), dilution is made into the resistance solution of 30 mL, measure 12 mL resistanceization solution to be again added drop-wise in the brown coal of 30 g dryings, stir, and then dry under temperature is 45-50 DEG C of condition, treat resistanceization coal sample constant weight, get the coal sample of 25g drying, according to the resistance performance test methods described in embodiment, the concentration recording CO is 90ppm.
Comparative example 3.
Using inorganic halogen as stopping agent, selective chlorination calcium is as reference.First, 20% CaCl is prepared
2the aqueous solution, measures this solution of 12mL and adds in the brown coal of 30g drying, stir, and then dry under temperature is 45-50 DEG C of condition, treat resistanceization coal sample constant weight, get the coal sample of 25g drying, according to the resistance performance test methods described in embodiment, the concentration recording CO is 60ppm.
Comparative example 4.
Take Macrogol 200 as polymer base material, the polyvinyl alcohol (accounting for 15%) taking certain mass is dispersed in water, the water-bath being placed in 30 DEG C heats and stirs 0.5h, then fatty alcohol-polyoxyethylene ether (5%) and polyoxyethylene (2%) is under agitation slowly added successively, continue to stir 0.5h, obtain PVA-based stopping agent.Then take this stopping agent of 9g, be surely dissolved in the volumetric flask of 30mL, be made into diluent, then measure 12mL diluent, add the dried brown coal sample of 30g to, stir, drier under temperature is 45-50 DEG C of condition, for testing resistance voltinism energy after coal sample constant weight.According to the resistance performance test methods described in embodiment, the concentration recording CO is 120ppm.
Comparative example 5.
Selection polysorbate is tensio-active agent, according to the polymer-based stopping agent preparation method of embodiment, preparation is with the polymer-based stopping agent of 25% polyvinyl acetal, 15% fat polyoxyethylenated alcohol and 0.5% polysorbate, and through resistanceization performance test, the concentration recording CO is 93ppm.
Comparative example 6.
The temperature of the polymer-based stopping agent of preparation is increased to 95 DEG C, and prepare the polymer-based stopping agent of 30% ethylene-octene copolymer, 35% polyoxyethylene lauryl ether and 1% α-sodium olefin sulfonate, through resistanceization performance test, recording CO concentration value is 102ppm.
Although the present invention with embodiment openly as above; but it is also not used to limit protection scope of the present invention; any technician being familiar with this technology, not departing from the change and retouching done in the spirit and scope of the present invention, all should belong to protection scope of the present invention.
Claims (4)
1. suppress a polymer-based stopping agent for brown coal self-ignition of coal pile, it is characterized in that: the solvent comprising macromolecular material that parts by weight are 1-30 part, the dispersion agent of 0.05-2 part, the permeate agent of 0.5-40 part, the membrane-forming agent of 0.1-5 part and 33-98.35 part; Described macromolecular material is one in polyethylene, polyacrylic ester, ethylene vinyl acetate polymer, polyvinyl acetal and ethylene-octene copolymer or two or more mixture; Described dispersion agent is one in Sodium dodecylbenzene sulfonate and polyoxyethylene or two or more mixture; Described permeate agent is one in polyoxyethylene lauryl ether, polyoxyethylene nonyl phenol ether, fatty alcohol-polyoxyethylene ether and amber acid ester sodium sulfonate or two or more mixture; Described membrane-forming agent is Lauryl Alcohol ester.
2. the polymer-based stopping agent of suppression brown coal self-ignition of coal pile according to claim 1, is characterized in that: described solvent is water.
3. the preparation method of the polymer-based stopping agent of the suppression brown coal self-ignition of coal pile as described in a claim as arbitrary in claim 1-2, it is characterized in that: first macromolecular material is distributed in solvent, the polymerization degree of described macromolecular material is greater than 5000, continuously stirring, then in solvent, dispersion agent, permeate agent and membrane-forming agent is added successively, continue to be stirred to acquisition clear solution, thus obtained polymer-based stopping agent.
4. the preparation method of the polymer-based stopping agent of suppression brown coal self-ignition of coal pile according to claim 3, is characterized in that: in whole preparation process, and the temperature of described solvent is 10-80 DEG C.
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