102 results about "Refined coal" patented technology

The invention relates to a method to separate temperate coal race component based on the extract and the stripping, which belongs to the separating method of the coal race component. Join the component solvent into the coal sample, agitate it and obtain the extract liquid-solid mixture; Carries on the liquid-solid separation to the extract liquid-solid mixture, obtains the extracted liquid and the gathering excess separately; To gathers the excess water used wash, then the vacuum drying, obtains gathers -odd coal; Joins the stripping medicinal preparation in the extracted liquid, the agitation, obtains the stripping liquid-solid mixture and carries on the liquid-solid separation to it, obtains the solid matter and the wet goods; To solid matter water used wash, dry, obtains the refined coal; The wet goods are two laminations: To a lamination takes off resolve A with the atmospheric pressure distillation, carries on the stripping again to the surplus solution, will produce sticks the thick shape solid, carries on the drying process to it, obtains the caking component; Another lamination is mainly resolved B and the stripping medicinal preparation omnium-gatherum. We bench work skill process is simple, the extract and the stripping process is temperate, the resolved recycle, the reaction process is advantageous for the control, can cause the coal petroleum to separate Cheng Cuiyu the coal, the refined coal, the caking group to classify many kinds of unique race components equally in advance likely.

The invention relates to modified refined coal compound plastic. It includes plastic 100 portions, polyvinyl chloride and the matched plasticizer 1-95 portions, stabilizer 2-7 portions; plastic 100 portions and polyethylene, polypropylene, ethane acetic acid ethylene copolymer, polystyrene or ABS, and bulk additive 5-90 portions. The physical and chemical indexes are: carbon content >=90%, 18um screenings <=1%, dispersant and coupling agent 0.5-6 portions. The parent material carbon content of the invention could be over 70%. When being used in polyethylene and polyvinyl chloride cable material, it could make cable material ageing resistance, reinforcing action and equally black.

The invention relates to a biomass fuel and a processing method thereof. The biomass fuel comprises biomass, livestock feces, coalification agent, refined coal powder, bonding agent and combustion improver. The biomass raw material and the livestock feces are mixed after crashed, the coalification agent and coalification bacteria anaerobic Cytophaga are added to form coalification raw material fed in a coalification bin for coalification and then dried after coalification; the refined coal powder, the bonding agent and the combustion improver are added proportioning, and then extruded and formed after mixed; and then cooling and drying treatment are carried out to obtained finished products. The invention uses coalification technology to carbonize the biomass, thereby improving the heat value of combustion which can reach 4500-5500Kcal. The invention uses a great deal of livestock feces as raw material, thereby solving the problem puzzling the development of rural livestock industry for a long time that livestock feces pollute the rural environment.

The invention relates to biological complex shaped fuel and the preparation method. The comprised components of fuel and their proportion are as follows: straw 80- 95 uints, refined coal 5- 20 units and sulfur- fixing agent 0.5- 1uints. The production method comprises following steps: (1) disintegrating straw with water content being 13- 17% into particles with size being smaller than 5mm; (2) disintegrating refined coal with water content being 13- 17% to particles with size smaller than 1mm; (3) mixing said straw, refined coal and sulfur- fixing agent according to said proportion; (4) feeding said mixture into shaping machine, extruding at 110- 150 Deg. C and 105- 120 Mpa, getting granular or block- shaped fuel with density being 1.2- 1.4 g/ cm3 and water content being 10- 12%; (5) cooling temperature of got shaped fuel to room temperature, and packing. The fuel is characterized by convenient transportation, easy storage and no sulfur product generation, and it is a sustainable new energy.

The invention discloses a method for extracting ultra-low-ash-content pure coal from coal slime. The method comprises the following steps: ball-milling slurrying, specifically, milling coal slime until particles with less than 200 meshes occupy more than 90%, and controlling the mass percent concentration of the coal slime slurry to be 10-35%; grading, specifically, conveying the particles with less than 200 meshes to a flotation step; flotation, specifically, adding a collecting agent, a foaming agent and an inhibitor in the obtained coal slime slurry, uniformly mixing, and carrying out one-time rough flotation, two sections of three-to-six-time fine flotation and one section of three-to-six-time scavenging to obtain refined coal slurry I, refined coal slurry II and tailing coal slurry respectively; and dehydration, specifically, adding a flocculant in the refined coal slurry I, the refined coal slurry II and the tailing coal slurry which are obtained through the flotation, carrying out flocculation settling, then dehydrating by virtue of an ultrahigh-pressure pressure filter, and controlling a pressure filter pressure to be 4.5-5.5Mpa, thus obtaining ultra-low-ash-content pure coal products, common refined coal products and tailing coal products. The method disclosed by the invention is simple in process flow, and capable of efficiently extracting the ultra-low-ash-content pure coal products from the coal slime; and moreover, the water contents of the obtained coal products are low and can achieve less than 15%, thus the coal products have remarkable economic benefits and environmental protection value.

The invention discloses a method for preparing high-quality mesophase pitch by ternary co-carbonization, and belongs to the technical field of deep processing of coal tar pitch. The method is characterized in that the high-quality mesophase pitch is prepared from a small amount of graphene and a hydrogen supply reagent as additives and refined coal pitch as a raw material. The method comprises thesteps as follows: firstly, refined coal tar pitch powder and a small amount of graphene are put into a mixer to be evenly mixed, and then the mixed powder and the hydrogen supply reagent are put intoa high temperature and high pressure reactor to be subjected to direct thermal polymerization, and the high-quality mesophase pitch product is obtained. Formation of mesophase pitch in the reactor isobviously accelerated by addition of a small amount of graphene and the hydrogen supply reagent, so that the reaction temperature required for formation of the mesophase pitch from the refined coal pitch is reduced, and time is shortened. The mesophase content of the obtained product is as high as 80% or higher, the optical structure of the product is wide-area streamlined, and the product has low softening point and good spinnability, and can be used for preparing high-end carbon materials such as high-performance carbon fiber and high-heat conducting foam carbon.

The invention discloses a production method for producing high intensity post forming biomass charcoal, and belongs to the resource and environment technical field. The invention adopts the material which takes lignin or biomass material as the raw material, the substance containing a great amount of lignin components produced during the product processing process acts as adhesive agent, the powder made by the biomass charcoal with fineness of 40 mesh and mesh residue no more than 20 percent, and the high quality refined coal powder with fineness no less than 60 mesh is used according to the proportion of biomass charcoal powder:refined coal powder:adhesive agent of 55 to 95:0 to 40:5 to 45 (percent, all are converted into dehydrated products), the adhesive agent, the biomass charcoal powder and the refined coal powder are processed to be the post forming biomass charcoal semi-finished products having certain shape and size under the condition that the moisture content percentage is suitable for the molding equipment to be molded, and finally are processed to be the post forming biomass charcoal finished products processed through the heating no less than 350 DEG C and the carbonizing treatment.

The invention discloses a method for preparing a high-quality needle coke raw material by removing QI (Quinoline Insolubles) in coal tar, and the method comprises the following steps: firstly, separately adding an aromatic hydrocarbon solvent and an aliphatic hydrocarbon solvent into a raw material coal tar or adding a mixture of the aromatic hydrocarbon solvent and the aliphatic hydrocarbon solvent into the raw material coal tar, and carrying out mixing and gravity settling on the obtained mixture, so that an obtained solution is divided into an upper liquid and residues; then, distilling the upper liquid so as to obtain low-QI-content refined coal tar. The QI in coal tar can be removed, and then low-QI-content refined coal tar for preparing needle cokes is obtained; the method is mild in conditions, strong in maneuverability and low in cost.

The invention discloses a synthetic diesel, which is composed of ingredients having the following weight proportions: 20-40 parts of finished diesel, 10-25 parts of 200# solvent diesel, 15-30 parts of refined fatty acid, 15-18 parts of low-temperature refined coal tars, 0.02-0.04 part of 3# aviation kerosene, 0.01-0.03 part of composite modified and catalytic incendiary agent and 0.02-0.05 part of isooctyl nitrate. The invention also discloses a synthesis process for the synthetic diesel. The synthetic diesel comprises oxygen-containing ingredients and in the meantime, uses the catalytic incendiary agent so that the synthetic diesel achieves greater variation in the combustion mode in vehicles than fossil diesel and so that the combustion rate of the synthetic diesel, the output powder and the tail gas emission of the vehicles can all run up to the ideal value, thus realizing dual purposes of energy-saving and emission-reduction.

The invention discloses a method for using refined-coal magnetic separator tailings for flotation water-spraying foam removal. The method provides an improvement method aiming at characteristic of first-section overflowing refined coal products of a three-product heavy-medium cyclone, which comprises the following steps of: separating, removing the medium, recycling the medium, and using the refined-coal magnetic separator tailings for the flotation water-spraying foam removal. Therefore, the method is suitable for the characteristic of the refined-coal magnetic separator tailings of the first-section overflowing refined coal products of the three-product heavy-medium cyclone, and is particularly suitable for the technical reform of the refined-coal magnetic separator tailings in a coal preparation plant in which the content of fine granular materials (-0.5mm) is high.

The invention provides a method for preparing high-quality middle phase asphalt by a co-carbonization method, and belongs to the technical field of coal tar asphalt deep processing. According to the method, a small amount of middle phase asphalt is used as additives; refined coal asphalt is used as raw materials for preparing high-quality middle phase asphalt. Firstly, the refined coal asphalt anda small number of middle phase asphalt additives are jointly put into a crushing machine to be crushed; uniform mixing is performed; next, the mixture is put into a high-temperature high-pressure reaction kettle for direct hot polymerization so as to obtain the high-purity middle phase asphalt product. The small amount of middle phase asphalt is added, so that the formation of middle phase asphalt products in the kettle is obviously accelerated, so that the temperature required by the forming of the middle phase asphalt by the refined coal asphalt is reduced; the time is shortened. The middlephase content of the obtained product is as high as 98 percent or above; the optical structure is in a wide area flow line shape; the softening point is low; the spinning performance is good. The middle phase asphalt can be used for preparing the high-end carbon materials such as high-performance carbon fiber. The method has the advantages that the process is simple; the energy consumption is low; the product is pure.

The invention relates to a chemical modification method of coal pitch with an unsaturated thermoplastic elastomer SBS (styrene-butadiene-styrene block polymer), which comprises the following steps: mixing coal pitch and an organic solvent, stirring at room temperature for 3 hours, standing, filtering, concentrating the mother liquor by evaporation, and drying to obtain the refined coal pitch; heating the refined coal pitch to 80 DEG C in a nitrogen atmosphere, and starting stirring; continuing heating to 90-110 DEG C, and adding a 100-mesh styrene unsaturated thermoplastic elastomer, namely SBS of styrene monomer and butadiene monomer; and heating to 130-170 DEG C at the rate of 2 DEG C/minute until granules in the unsaturated thermoplastic elastomer basically disappear in the coal pitch substrate, adding a catalyst, such as boron trifluoride (BF3) or the like, and reacting to obtain the SBS-chemically-modified coal pitch. The modified coal pitch overcomes the brittleness in coal pitch, enhances the softening point of the coal pitch, and basically satisfies the performance requirements for coal pitch for high-grade highways or anticorrosive paint; and thus, the waste coal pitch is changed into valuable substances.

The invention relates to a coal pitch refining method used for synthesizing mesophase pitch. The coal pitch refining method used for synthesizing mesophase pitch comprises following steps: coal pitchis smashed and sieved, a mixed solvent A is added into coal pitch, an obtained mixture is stirred, is allowed to stand, and is subjected to layering so as to obtain an upper layer which is a mixed solution A of the mixed solvent A and coal pitch, and a lower layer which is an impurity mixture containing coal powder coke particles; the upper layer mixed solution A is subjected to filtering and distillation for recovery of the mixed solvent A so as to obtain crude coal pitch; a mixed solvent B is added into the crude coal pitch, and stirring, standing, and layering are carried out so as to obtain an upper layer which is a mixed solution B of the mixed solvent B and refined coal pitch, and a lower layer which is a heavy asphalt impurity mixture; the upper layer mixed solution B is subjected to filtering and distillation for recovery of the mixed solvent B so as to obtain refined coal pitch can be used for synthesizing mesophase pitch. The coal pitch refining method is capable of realizingseparation of coal pitch effective components with impurities such as coal powder coke particles under normal pressure conditions, the obtained refined coal pitch can be taken as a high grade carbonmaterial raw material, and the requirements of subsequent high added value product production are satisfied.

The invention discloses a method for preparing mesophase pitch on the basis of mesotherm coal pitch used as a raw material. The method comprises the following steps: firstly, performing preheating polycondensation reaction, precise heat filtering and cutting light component treatment on the mesotherm coal pitch, thereby acquiring refined coal pitch with ultralow quinoline insoluble content, and then performing heating polycondensation reaction for 1-10h on the refined coal pitch under the reaction temperature of 400-460 DEG C, pressure of 3-5MPa and stirring speed of 50-500r/min, thereby acquiring the mesophase pitch. According to the invention, an integrated device is adopted for simultaneously completing the operations, such as, heating polycondensation and heat filtering and is assisted by simple light component cutting and drying technologies to prepare high-quality mesophase pitch; the production technology is simplified; the production cost is lowered; the yield of the acquired mesophase pitch is within 10-30%; the pitch is low in ash content and has an excellent optical tissue structure.

The invention relates to the field of coal upgrading and discloses a coal dressing method. The method comprises the following steps: sending high-sodium coal to a microwave upgrading and sodium removing unit (4) for removing sodium; outputting sodium-removed coal by using the microwave upgrading and sodium removing unit (4); sending the microwave upgrading and sodium removing unit (4) to a coal washing unit (5) for dressing by washing; sending refined coal output by the coal washing unit (5) to a refined coal bunker (7); supplying hot air to the refined coal bunker (7) by air and dehumidified steam which comes from the microwave upgrading and sodium removing unit (4) after the air and the dehumidified steam pass through a condensing heat exchanger (6); drying the refined coal by using the hot air. By adopting the coal dressing method provided by the invention, sodium in the coal can be removed, water in the coal can also be removed, harms caused by combustion of sodium element in the coal can be reduced, and the calorific value of the coal is increased as well.

The invention provides a combined technological method for producing needle coke from coal tar. The combined technological method comprises following steps: coal tar after a coal tar raw material is pretreated enters a boiling-bed reactor, after a reaction, a liquid product obtained through separation is subjected to fractional distillation, a light component and a heavy component are obtained, and the light component is mixed with the coal tar raw material; the heavy component enters a coking device and is subjected to a coking reaction, and after separation, gas, coked gasoline, coked diesel, coked gas oil and needle coke are obtained. The refined coal tar raw material obtained with the method has the advantages of low quinoline insoluble content, low S and N impurity content and the like, and the produced needle coke has the advantages of low coefficient of thermal expansion, low sulfur content, low ash content and the like.

The invention discloses a liquid-solid fluidizing bed coarse slime sorting system of three products and a process of the system. An object screened out by a desliming screen enters a classified cyclone device, a bottom stream of the classified cyclone device enters a liquid-solid fluidizing bed coarse slime sorting machine of the three products for sorting, refined coal slime, tail coal slime andintermediate coal slime are generated after sorting, dewatering of the intermediate coal slime is completed through an intermediate coal slime sieve, an object screened out by the intermediate coal slime sieve enters a medium combining barrel, and a material in the medium combining barrel is pumped into a heavy medium cyclone device for sorting. By means of the process, the coarse coal slime whichis difficult to sort can be sorted, and meanwhile, the feeding grain size range can be expanded. The problem that the quality of the refined coal slime and tail coal slime in existing coarse coal slime sorting processes cannot be ensured at the same time is solved, and by pumping the intermediate coal slime into the heavy medium cyclone device with high sorting precision for resorting, the recovery rate of refined coal is increased.

The invention discloses an integrated process technology for whitening, shaping and modifying natural powdery quartz, and belongs to the technical field of nonmetallic mineral further processing. The technology includes the steps that after raw powdery quartz ore is preliminarily selected, coarsely crushed, pulverized, graded, doped, calcined, scattered and modified, super-white and superfine active torispherical silica micro powder products are obtained. Dopant is composed of charcoal (or refined coal) and sodium chloride (or sodium carbonate), the dosage of charcoal (or refined coal) is 1-3% of the weight of power materials, the dosage of sodium chloride (or sodium carbonate) is 0.5-2% of the weight of the power materials, the calcination temperature is 900-1300 DEG C, and the heat-insulation time is 1-6 hours. By the adoption of the integrated process technology for whitening, shaping and modifying the natural powdery quartz, the white degrees of the products reach 92-98%, the content of SiO2 is 99.0-99.9%, the content of Fe2O3 is smaller than 0.1%, the fitness reaches 325-3000 mesh, and the shapes of granules is torispherical. The super-white and superfine active torispherical silica micro powder products can be massively used in the industrial fields of electronic and electrical materials, interior and exterior wall paint, fire resistant materials, polishing materials, plastic, rubber, adhesives and the like.

The invention relates to a method for recovering refined coal from coal slime, in particular to a grading method for recovering the refined coal from the coal slime. The method has the technical key points that by using a spiral classifier and the principle that 'sedimentation velocity in the liquid is different due to different particle sizes and specific gravities' of solid particles, the method realizes the separation between relatively high ash component and relatively low ash component by gravity classification; and 25-35% of plus sieve low ash refined coal with larger particle size can be recovered from the relatively high ash component, and 30-40% of minus sieve high ash coal slime with smaller particle size can be removed from the relatively low ash component. Through twice classification, the aim of 'removing the relatively high ash component in the coal slime' can be achieved. The embodiment of the invention can be used for recovering the refined coal from the coal slime, thus achieving the aim of reducing the ash content of the refined coal and meeting the demand of the user.

The invention relates to a method for selecting coal by using a water medium swirler. Raw coal is classified by a grading sieve, materials above 3 mm are crushed to be less than 3 mm through a crusher, the raw coal is subjected to water injection mixing under the grading sieve of 3 mm or less, and enters a high-frequency linear vibrating screen for desliming and grading, and after grading, materials which are larger than 0.063 mm enter a water medium gangue discharge cyclone to remove gangue, the underflow materials enter the gangue dewatering screen, the oversize products are gangue, are conveyed into a gangue field, and then enter an inner circulating water system to be recycled again, the overflow materials enter a final coal coarse slime grading sorting unit, the separated overflow materials enter a clean coal dewatering screen, the oversize products are refined coal and enter a clean coal field, the sieved water enters the inner circulating water system to be recycled again, the separated overflow materials enter the tail coal coarse coal slime unit to be sorted again, and the overflow materials of the waste rock swirler in the water medium is dehydrated through a middling coal dewatering screen; and the materials on the sieve are middling coal and are sent into a middling coal field, and the sieved water enters an inner circulation water system to be recycled.

An initial coal feedstock comprised of primary or second coal is cleaned so as to reduce its ash content by at least about 20% in order to yield a refined coal product that produces fewer NOx emissions. The reduced NOx emissions result primarily from the ability to use less primary combustion air in order to maintain the pulverized refined coal in a suspended condition within the feeder pipes of a coal burner compared to the minimum quantity of air required to maintain pulverized coal from the initial coal feedstock in a suspended condition within the feeder pipes. Reducing the primary combustion air reduces the amount of oxygen in the primary combustion zone that would otherwise be available for converting fuel nitrogen into NOx. Instead, more of the fuel nitrogen is converted into N₂. Reducing the primary combustion air also reduces the temperature of the core flame, reducing thermal NOx formation. Increasing the amount of secondary and/or tertiary combustion air to compensate for the reduced primary combustion air results in an overall decrease in NOx formation, as thermal NOx formation is reduced as combustion is completed in the cooler secondary and/or tertiary combustion zones.

The invention belongs to the technical field of coal separation, and particularly relates to a waterless separator of high-sulfur coal and low sulfur coal gangue blocks and sulfur blocks. The waterless separator comprises a raw coal screening graded feed system, an elastic double-flange coal conveyor, a high-sulfur coal gangue block and sulfur block separating system, a low-sulfur conveying electronic weighing scale, a high-sulfur coal gangue block and sulfur block conveying system, an electric variable frequency speed regulating system, a programmable control type electric appliance interlocking device, a photoelectric conversion and electronic pulse filter, a detecting head shielded chamber, a 238 Pu low-energy photon source and a probe. The photoelectric conversion and electronic pulsefilter, the probe and the 238 Pu low-energy photon source form an online recognition separation detecting system of 238 Pu type coal sulfur and ash to waterlessly separate the high-sulfur coal blocks, the gangue blocks and the sulfur blocks in raw coal blocks and obtain low-sulfur low-ash refined coal, and no slime water is generated to pollute the environment, thereby greatly reducing the coal separation energy consumption and the coal separation cost.

The invention discloses a process for purifying feedstocks of carbon black which mainly comprises, charging forward dissolvent comprising benzene, toluene and alpha-methylnaphthalene or beta-methylnaphthalene into crude coal tar, wherein the weight ratio of the crude coal tar and the forward dissolvent is 1:0.1-3, after 0.5-1 hour, charging backward dissolvent comprising aminoethyl alcohol, propanone, alcohol isopropylicum and phenylethene into the miscible liquid of the crude coal tar and the forward dissolvent, wherein the weight ratio of the crude coal tar and the backward dissolvent is 1:0.05-0.5, at the temperature of 10-60 deg. C, pressure 0.1-0.1Mpa, sustaining 0.5-2 hours, carrying out solid-liquid separation to obtain the refined coal tar.

The invention discloses a preparation method of a rubber and plastic filling agent. The preparation method comprises the steps of 1) refining coal dust; 2) configuring a modifier; and 3) preparing the rubber and plastic filling agent: mixing the refined coal dust and the modifier, stirring and drying to obtain the rubber and plastic filling agent. According to the filling agent prepared by the processes of mixing, drying and the like, the preparation process is simple, the operation is easy, the filling agent can replace carbon black in common industries, and is superior to common carbon black in the aspects of electrical property, impact property, processing property and the like.

The invention discloses an asphalt resin binder which is prepared by condensation of refined coal tar and phenolic aldehyde under the catalysis action of an inorganic acid. Compared with an existing asphalt resin binder, the asphalt resin binder has the advantages the used raw materials are low in price and easy to available, the softening point of the asphalt resin binder is low, and the content of a quinoline insoluble is low; compared with phenolic resin, the asphalt resin binder is higher in carbon residue; and the specific surface area of the carbon residue is smaller, and thus the asphalt resin binder is an excellent carbon material binder.

The invention discloses a preparation method for a nanometer titanium dioxide/coal ash composite material. The method comprises the following steps: purifying by performing thermal treatment and acid treatment on raw material coal ash, thereby acquiring refined coal ash; under a water bath condition, weighting a certain amount of refined coal ash and distilled water and putting into a four-opening flask and stirring, adding less concentrated hydrochloric acid and then dropping a certain amount of TiCl4 solution; standing by for a while, and then dropping an aqueous solution containing ammonium sulfate and concentrated hydrochloric acid into the TiCl4 solution, mixing and stirring for a period of time, increasing the temperature of the mixture and then keeping the temperature; dropping an ammonium carbonate solution in a certain concentration, adjusting pH value, reacting for a period of time and then filtering, washing and drying, and then placing a sample into a muffle furnace for roasting, thereby acquiring the coal ash loaded TiO2 composite material. According to the invention, the waste coal ash of the power plant is used as a raw material and TiO2 is loaded onto the surface of the waste coal ash, so that a photo-catalysis compound material is prepared. The material is capable of effectively degrading the waste gas and waste water and can achieve the effect of treating the waste with the waste.