35 results about "Refined coal" patented technology

The invention discloses coal tar mixed phenol novolac epoxy resin as well as a preparation method and application thereof. The preparation method of the coal tar mixed phenol novolac epoxy resin comprises the following steps: S1, in an inert atmosphere, mixing and stirring refined coal tar mixed phenol, a solvent and an acid catalyst, then adding an aldehyde solution, and reacting to obtain phenolic resin; s2, in an inert atmosphere, mixing and stirring phenolic resin, a phase transfer catalyst and epoxy chloropropane, preheating to 70-100 DEG C, reacting for 1-4 hours, cooling to 65-70 DEG C, dropwise adding a basic catalyst, heating to 80-85 DEG C, continuously reacting for 2-3 hours, and naturally cooling; and carrying out post-treatment. According to the preparation method and application of the coal tar mixed phenol novolac epoxy resin, operation is easy and convenient, control is easy, and batch production can be achieved conveniently; in addition, the refined coal tar mixed phenol is low in price, the production cost of the anticorrosive paint is greatly reduced, the performance of the paint is improved, and the economic benefits of enterprises are improved.

The invention discloses a coal tar pretreatment method. According to the method, a magnetic filtering system is included, the magnetic filtering system comprises a magnetic filter, the magnetic filter comprises a magnetic filtering cylinder, multiple layers of magnetic gathering media are arranged in the magnetic filtering cylinder, a magnetic field generating device is arranged outside the magnetic filtering cylinder, and the magnetic field generating device enables a high-gradient magnetic field to be formed in the magnetic filtering cylinder. The method comprises the following steps: heating a coal tar raw material, mixing the heated coal tar raw material with water, a demetallization agent, a flocculant and a magnetic seed, carrying out magnetic filtration, and sequentially carrying out salt leaching, oil-water separation and deep dehydration to obtain refined coal tar. The pretreatment method can effectively remove solid slag, water, salt and metal in the coal tar, and is simple in process flow and low in cost.

The invention discloses coal pitch-based super capacitor carbon and a preparation method and application thereof, and the preparation method of the super capacitor carbon comprises the steps: dissolving coal liquefaction refined pitch in an organic solvent, and adding ZnCl2, KCl and potassium citrate to obtain a pitch solution containing an ionic hot molten salt activator; the preparation method comprises the following steps: soaking a biomass template in a dopamine aqueous solution, and then mixing with an asphalt solution to obtain a biomass template-asphalt compound; and oxidizing, carbonizing, activating, washing and drying the compound to obtain the capacitor carbon. And mixing and heating the capacitor carbon, a nitrogen source and a phosphorus source, and carrying out graphitization doping. The pitch-based super capacitor carbon with high specific surface area, excellent electrochemical performance and environmental protection advantages is prepared through a biomass template method, and the preparation process has great potential in the field of energy storage.

The invention provides a lump coal separation and dehydration process for power coal, and belongs to the technical field of coal washing. The method comprises the following steps: performing ionization activation on a flocculating agent solution 1 by using a plasma reactor to form a flocculating agent solution 2, spraying the ionized and activated flocculating agent solution 2 to lump coal by using a Venturi tube, and then emitting plasmas to the lump coal sprayed with the flocculating agent solution 2 by using a plasma spray gun, the flocculant solution 2 is sprayed on the surface of the coal briquette, so that the surface of the coal briquette sprayed with the flocculant solution 2 is modified to form a solidified hydrophobic membrane layer, then the lump coal on which the solidified hydrophobic membrane layer is formed is sorted, and the gangue is separated from the fast coal to obtain a final product. The hydrophobicity and crushing resistance of the lump coal are effectively improved, and the dewatering effect of the lump clean coal is finally improved.

The invention discloses a clean coal flotation reagent regulation and control method and a reagent regulation and control system thereof.The method comprises the steps that in the clean coal flotation process, an image sample file is recorded by a visual module; the central processing module processes the sample file to obtain a flotation state judgment reference set; performing size calculation on a plurality of foam objects in the flotation state judgment reference set, and drawing a foam size distribution proportion diagram of the generated sample unit; then comprehensively judging the flotation effect in a sampling time period according to the uniformity change trend of a foam layer, the thickness change trend of the foam layer, the relative proportion condition of foam objects in an ideal foam size range in each sample unit and the foam stability in a plurality of continuous sample units, and calculating to obtain an agent adjustment addition amount; and the medicine adding adjusting module adjusts and controls the medicine adding amount in real time according to the obtained medicine adjusting adding amount. The agent adding amount can be regulated and controlled according to the real-time dynamic change of the foam layer, so that the flotation effect and stability are improved.

The utility model aims to provide a water jet self-cleaning separation device, and belongs to the technical field of material separation. The device comprises a material guide groove, a spraying mechanism, a separating mechanism and a liquid phase collecting mechanism, materials enter the separating mechanism through the material guide groove, and the spraying mechanism, the separating mechanism and the liquid phase collecting mechanism are sequentially arranged from top to bottom; the separating mechanism comprises a screen for screening materials and a guide rail, and the spraying mechanism linearly moves back and forth along the guide rail in a reciprocating mode. The spraying mechanism comprises a spraying pipeline, and a plurality of nozzles which are evenly distributed and used for cleaning materials on the screen and pushing the materials forwards are arranged on the spraying pipeline. According to the clean coal extraction device, clean coal extraction is conveniently achieved, and high economic value is generated; meanwhile, the water jet self-cleaning separation device can also be used for purification treatment before each branch drainage channel of the underground coal mine converges into the water sump, solid phase deposition in the water sump can be effectively reduced, the use efficiency of the water sump is improved, and the burden of underground operation is greatly relieved.

The invention discloses an efficient circulating turbulent flow microbubble flotation machine. Comprising an outer-layer barrel, an inner-layer barrel arranged in the outer-layer barrel, a rotating shaft arranged in the inner-layer barrel, a multi-layer coupling radial shearing impeller and a high-flux axial bidirectional conveying impeller which are sequentially arranged on the rotating shaft from top to bottom, and a lower flow guide separation barrel located under the high-flux axial bidirectional conveying impeller. According to the high-flux axial bidirectional conveying impeller, the recovery rate of clean coal can be effectively increased, and the overall separation effect of equipment is improved. Loss of flotation clean coal can be greatly reduced, and economic benefits of equipment production are improved; the concentrate distribution ring at the upper part of the outer-layer barrel body is annularly distributed, and clean coal foam is uniformly distributed and slowly flows and the volume of the foam is reduced when being conveyed to the foam groove at the outer end, so that the conveying process of clean coal is more stable, and the effect of reducing the loss of the clean coal is achieved.

The invention provides a coal mine gas fine extraction system and a using method, and relates to the technical field of gas extraction treatment. The problems that the extraction rate of low-concentration gas is low, the impurity content is high, and the mixing precision is poor are solved. The system comprises a tree-shaped extraction pipe network, a spiral separation pipe, a washing device, a condenser, an adsorption tower, a membrane separation device and a dynamic and static coupling mixing system which are communicated in sequence. Directional drilling-hydraulic fracturing permeability increasing is adopted, and the low-concentration gas recovery rate is larger than or equal to 70%; multistage centrifugation, water washing, adsorption and membrane separation are combined, the removal rate of dust, H2S and CO2 is larger than or equal to 90%, and methane is purified to be larger than or equal to 95%; the static and dynamic mixing cavity is controlled by fuzzy PID closed loop, and the mixing proportion error is less than or equal to + / -1.5%. The system is modularized, explosion-proof, low in consumption and intelligent, and safe and efficient extraction and high-quality utilization of coal mine gas are achieved.

The present invention is applicable to the field of micro-coal atomization combustion technology, and provides a micro-coal atomization combustion mechanism. The micro-coal atomization combustion mechanism includes: an operation box, on which a control box is installed, and a blanking and grinding assembly is arranged inside the control box; an ignition and combustion assembly, installed inside the operation box; and a driving and operating assembly, installed inside the operation box and connected to the ignition and combustion assembly. When the micro-coal atomization combustion mechanism is in use, coal blocks are discharged into the blanking and grinding assembly, and the coal blocks are refined and ground by the blanking and grinding assembly. The refined coal blocks after grinding will be discharged into the ignition and combustion assembly, and the ignition and combustion assembly can ignite and burn the passing refined coal blocks. At the same time, the operation of the blanking and grinding assembly will drive the driving and operating assembly to move, thereby controlling the continuous flipping of the refined coal blocks in the ignition and combustion assembly to make the refined coal blocks burn more abundantly and improve the combustion effect.

The utility model discloses a pulverized coal refining device which comprises a machine body and a rotary screen drum installed in the machine body in a rotary mode, grinding balls are filled in the rotary screen drum, a discharging device is installed at the bottom of the machine body, a feeding device is installed on the left side of the machine body, the feeding device is inserted into the rotary screen drum in a penetrating mode, and the grinding balls are arranged on the rotary screen drum. A bottom plate is welded to the bottom of the machine body, and a driving device for driving the rotary screen drum to rotate is mounted at the top of the bottom plate; a cleaning device for cleaning the rotary screen drum is mounted at the top of the machine body; according to the device, by means of rotation of the rotary screen drum, the rotary screen drum is in active contact with the cleaning device, cleaning of the rotary screen drum is achieved, dredging of screen holes is guaranteed, refined pulverized coal particles can be smoothly leaked out of the screen holes, and the material stacking condition is avoided.

The present application provides a kind of coal-based mesophase pitch and its preparation method, belong to pitch preparation technical field.The preparation method includes the following steps: coal-based raw pitch is pretreated, and refined coal pitch is obtained;Distillation is carried out on refined coal pitch, and distillation coal pitch is obtained;Heat polycondensation reaction is carried out on distillation coal pitch, and coal-based mesophase pitch is obtained.The present application uses single coal-based raw pitch as raw material, with the help of the combination of pure physical purification of refining-distillation, cooperatively removes impurities and controls material composition, reduces the quinoline insoluble content of coal pitch to below 0.1wt%.On this basis, through non-catalytic heat polycondensation reaction, the mesophase conversion rate is significantly improved, and the performance consistency of the obtained product as carbon material precursor is improved.The process is simple, controllable, energy-saving and cost-effective, which provides a reliable technical path for the high-value utilization of coal tar pitch and the large-scale stable production of high-end carbon materials.

The invention discloses a coke and a preparation method and a preparation device thereof, and belongs to the technical field of coal blending and coking. The coke is formed by mixing and coking components including the following mass percentage contents: 1 / 3 coking coal 32-40%, fat coal 22-28%, coking coal 32-38%, and blue coke 2-5%. Compared with the prior art, blue coke is added to the coke blending coal as a thinning agent to replace coking clean coal. And by adjusting the coal blending structure, optimizing the coal preparation and coking process system under the blue coke coking state, the adaptability of blue coke is improved, the coke quality, coking rate, and by-product yield after adding blue coke are guaranteed, while saving high-quality coking coal resources, reducing production costs, and expanding the application range of blue coke.

The present invention provides a method for quickly extracting coal tar processed products, and relates to the technical field of refined coal tar production methods. When the process is started, after a hydrorefining unit performs a hydrogenation reaction, unqualified hydrogenated products are recycled and added to the hydrorefining unit. Since, after passing through the hydrorefining unit, although the output is still unqualified products, the unqualified products contain saturated aromatic hydrocarbons, which can reduce unstable reaction factors in the hydrorefining unit, so that the hydrogenation reaction proceeds stably, so that the temperature of the hydrorefining unit stably rises to a first predetermined temperature, and qualified refined coal tar can be quickly extracted.

The invention discloses a refined coal blending system, which belongs to the technical field of coal blending and comprises a support, two storage bins fixedly mounted at the upper end of the support, sealing covers fixed at the upper ends of the storage bins, coal outlet pipes fixedly connected to the lower ends of the storage bins, a conveying belt arranged on the lower side of the support, and a cleaning assembly arranged on the lower side of one end in the support. A storage bin is arranged in the coal outlet pipe, a stirring assembly is arranged in the storage bin, a crushing assembly is arranged at the upper end of a sealing cover, and an adjusting assembly is arranged in the coal outlet pipe. The adjusting plate rotates to form discharging ports of different sizes with the coal outlet pipe, coal in the storage bin falls onto the conveying belt through the discharging ports, the coal outlet amount of the coal outlet pipe can be adjusted according to the coal blending requirement by arranging the adjusting assembly, and the coal blending accuracy is improved.

The present invention discloses a microwave-assisted method for preparing asphalt-based nitrogen-doped functionalized mesoporous carbon. The method comprises the following steps: (1) crushing deashed refined coal liquefaction asphalt to obtain asphalt powder; (2) mixing the asphalt powder with a template and a nitrogen source, and then performing microwave-assisted pre-oxidation; (3) carbonizing the pre-oxidation product; (4) adding an acidic solution to the carbonized product and stirring and mixing to form a slurry; and then performing microwave-assisted pickling on the slurry; (5) washing the pickled product to a neutral pH, and then drying it; and (6) activating the dried product to obtain asphalt-based nitrogen-doped functionalized mesoporous carbon. The method of the present invention uses microwave-assisted technology to reduce the carbonization temperature, increase the specific surface area of ​​the product, and simplify the pickling process. It can effectively solve the problems of easy collapse and damage of the pore structure of mesoporous carbon materials and incomplete template removal in the prior art.

A method for producing coke and one or more volatile products includes the following steps: (i) providing a purified coal product (PCP), wherein the PCP is in particulate form and wherein at least about 90% v of the particles have a diameter not greater than about 100 microns; wherein the PCP has an ash content of less than about 10% m and a water content of less than about 5% m; (ii) combining the PCP with a liquid residual oil to produce a combined solid-liquid blend, wherein the solid-liquid blend comprises at least about 0.1% m and at most about 30% m of the PCP; (iii) subjecting the solid-liquid blend to a temperature in excess of 375 °C for a period of time sufficient to cause at least 1% of the PCP particles to crack to produce one or more volatile products, and (iv) producing coke from the product of step (iii).

This disclosure relates to a method for refining Fischer-Tropsch synthetic oil. A mixed feedstock, consisting of coal-based Fischer-Tropsch mixed olefins, coal-based Fischer-Tropsch mixed heavy hydrocarbons, and coal-based Fischer-Tropsch wax from the Fischer-Tropsch synthesis reaction, is fed into a reaction unit for hydrogenation to obtain reaction products. These products are then fed into a hot high-pressure separator, a cold high-pressure separator, a hot low-pressure separator, and a cold low-pressure separator for gas-liquid two-phase separation. The resulting third and fourth liquid phases are fed into a fractionation unit for fractionation to obtain coal-based synthetic liquid wax, heavy hydrocarbons, and light hydrocarbons. The heavy hydrocarbons are then sent to a vacuum unit for separation to obtain heavy liquid paraffin, coal-based Fischer-Tropsch soft wax, and refined coal-based Fischer-Tropsch wax. The light hydrocarbons are then sent to a stabilization unit for pressure stabilization. This method removes oxygen-containing compounds and saturates olefins, thereby improving product stability and achieving separation and purification of the Fischer-Tropsch synthetic oil, resulting in a high-quality product.

The utility model discloses a device for continuously separating, drying and gasifying fine slag, and belongs to the technical field of chemical fine slag separation treatment. The device comprises a premixing extraction tank, a stirring mixer, an ash-water separator, a filtering machine and a drying machine, the premixing extraction tank is provided with an inner cylinder and an outer cylinder, the upper part of the inner cylinder is of an open structure, and the bottom of the outer cylinder is provided with an enriched carbonaceous component outlet; the enriched carbonaceous component outlet is connected to a feed port of the stirring mixer, a mixed material outlet in the bottom of the stirring mixer is connected to the ash-water separator, a carbonaceous and extractant mixed component outlet formed in the top of the ash-water separator is connected to an inlet of the filter through a pipeline, and an ash-water separator ash-water outlet is formed in the bottom of the ash-water separator; a wet carbonaceous material outlet of the filter is connected with a material inlet of the dryer; the dryer is provided with a clean coal outlet; according to the utility model, two-stage mixing of the extraction agent and the suspended gasified fine slag material is adopted, so that the problem that the filter cake fine slag of the entrained-flow bed cannot be effectively utilized is solved.

The present invention relates to a method for applying waste kitchen oil to the flotation of high-ash difficult-to-clean coal, which belongs to the technical field of fine-particle coal flotation and solves the problems of low collector selectivity, low collection performance, large reagent dosage, low clean coal yield and low grade in the prior art. A method for applying waste kitchen oil to the flotation of high-ash difficult-to-clean coal comprises the following steps: (1) preparing flotation reagent: preparing a composite collector solution with waste kitchen oil as raw material; (2) primary flotation: mixing the ore pulp with the composite collector solution and adjusting the slurry to weak alkalinity, and then performing primary flotation to obtain clean coal and tail coal of primary flotation; (3) secondary flotation: adjusting the first-stage flotation clean coal slurry to weak acidity, performing secondary flotation, and obtaining clean coal products and medium coal; (4) grinding and dissociating the medium coal in the second-stage flotation, and returning the coal slurry to the first-stage flotation machine. While ensuring the clean coal yield, the clean coal ash content is reduced and the collector dosage is reduced.

The invention relates to a preparation method of a special fuel for a coal-based heat engine. The method mainly comprises the following steps: 1) distilling a coal tar fraction under the pressure of 20KPa, and collecting a fraction with a boiling point of 240-340 DEG C under normal pressure to obtain the coal tar fraction; 2) carrying out selective hydrogenation ring opening on the coal tar fraction to obtain refined coal tar; 3) distilling the refined coal tar under the pressure of 20KPa, and collecting fractions with the boiling point of 240-340 DEG C under normal pressure to obtain refined coal tar fractions; 4) directly using the refined coal tar fraction as a special fuel for a thermomotor; or compounding the refined coal tar fraction with a special fuel for a petroleum-based hot-air engine to obtain the special fuel for the hot-air engine. The obtained fuel special for the hot-air engine is free of sulfur and nitrogen, high in cetane number, high in flash point and good in thermal oxidation stability, and is a high-performance fuel special for the hot-air engine.

The present application relates to high-chlorine coal washing technology field, a kind of high-chlorine coal washing and heavy medium cyclone is provided, with feed inlet, underflow port and overflow port, feed inlet is used to pass into high-chlorine coal and heavy medium, and heavy medium includes calcium hydroxide, cyclone includes: the hollow inside of refined coal baffle shell, it is arranged in cyclone interior, located at underflow port, the upper end surface of refined coal baffle shell has recess one;Cover lifting is arranged in recess one, cover has a plurality of through holes one on it, through hole one is configured to block heavy object and pass refined coal particles, cover sidewall also has a plurality of through holes two, through hole two is configured to allow heavy object to enter but not to pass through. Through the above technical scheme, the problem that the processing efficiency is not high and part of refined coal particles is mixed with heavy object and taken out underflow port, causing waste, is solved in the prior art that high-chlorine coal is gradually selected and dechlorinated.

The invention provides a coking method matched with ultra-clean coal and coke produced by the method. The coking method using the ultra-clean coal comprises the following steps: S1, preparation of blended coal: based on the total weight of the blended coal as 100%, preparing the blended coal for coking by adopting the following coal blending ratios in percentage by mass: 15%-35% of gas coal, 8%-20% of 1 / 3 coking coal, 2%-20% of fat coal, 5%-15% of coking coal, 15%-20% of lean coal, 15%-20% of meager lean coal and 5%-15% of ultra-clean coal; and S2, tamping and coking: blending and uniformly mixing the mixed coal, crushing and tamping the mixed coal, coking by using a tamping coke oven, and carrying out dry quenching to obtain dry quenched coke. According to the invention, the super-clean coal is added into the mixed coal, so that the use amount of the high-quality fertilizer coking coal can be effectively reduced, high-valued application of low-rank coal resources is realized, domestic high-quality coking coal resources are saved, and the coke quality is improved.

The utility model relates to the technical field of clean coal sampling, in particular to an automatic sampling device for flotation fine particle clean coal muddy water, which comprises an east group of flotation collection pipelines, a middle group of flotation collection pipelines and a west group of flotation collection pipelines, a storage tank is arranged on a support frame, and three groups of flotation feed liquid collection branches are arranged on the storage tank. The three groups of flotation feed liquid collecting branches are correspondingly communicated with the east group of flotation collecting pipelines, the middle group of flotation collecting pipelines and the west group of flotation collecting pipelines respectively; the discharge three-way pipe is respectively communicated with the storage tank, the flotation refined coal mine feed liquid discharge pipe and the flotation refined coal mine feed liquid sampling pipe, and the flotation refined coal mine feed liquid sampling pipe is provided with a sampling port; the feed liquid collecting mechanism comprises a rotary disc, a rotary disc driving assembly and a material taking barrel, the rotary disc driving assembly is installed on the supporting frame, the rotary disc driving mechanism is connected with the rotary disc, and the material taking barrel is arranged on the rotary disc. According to the utility model, the accuracy of material liquid sampling is improved, the labor intensity of workers is reduced, and safety accidents in the sampling process are reduced.

This invention belongs to the technical field of coal blending equipment, specifically relating to a refined coal blending device for gasification, comprising: a raw coal precision feeding system, including multiple corresponding raw coal silos and a quantitative feeding component for quantitatively blending and outputting various raw coals; a coal conveying system, including a conveyor belt and a leveling unit, wherein the conveyor belt is horizontally positioned between the quantitative feeding component and the mixing system, and the leveling unit is positioned on the upper side of the conveyor belt for leveling the raw coal on the conveyor belt; an online detection system for acquiring coal quality data of the industrial composition, elemental composition, and ash chemical composition of each type of raw coal in the mixed raw coal on the conveyor belt; and a central control system for comparing the coal quality data acquired by the online detection system with a preset coal quality data range to control the coal output flow of each raw coal silo in the raw coal precision feeding system, thereby improving the coal blending accuracy and obtaining coal quality that meets the requirements for gasification.

The invention discloses a method for resource utilization of raw coal flotation-electrolysis, which relates to the technical field of coal sorting. The method comprises the following steps: crushing raw coal and grinding it, flotation separation, and obtaining clean coal and tail coal slurry; mixing tail coal slurry with sodium hydroxide solution as anolyte, electrolyzing sodium hydroxide solution as catholyte, and reducing the cathode to obtain hydrogen; filtering and separating the anolyte, washing and drying, and obtaining inorganic salt products; mixing the filtrate and the washed solution, concentrating, acidifying to pH=3, filtering, washing and vacuum drying, and obtaining water-insoluble acid; then acidifying the filtrate to pH=1.5, extracting, concentrating and vacuum drying, and obtaining solid water-soluble acid. The method combines flotation with electrolysis, which not only improves the utilization efficiency of coal resources, simplifies the process flow, and reduces costs, but also improves the overall economic benefits through by-product high-value products, and realizes a more environmentally friendly coal sorting and utilization method.

This invention relates to the field of data management and distributed caching technology in the coal industry, particularly a distributed cache storage management system for coal transportation and washing data. The system executes the following steps: S1, binding production data to a unique batch identifier of incoming raw coal and a coal flow characteristic tag; S2, constructing a spatiotemporally coupled cache index to complete cache data addressing mapping; S3, aggregating and storing data to corresponding cache nodes to complete differentiated cache partition deployment; S4, outputting a priority scheduling strategy; S5, outputting a cross-network synchronization control strategy; S6, dynamically adjusting the lifecycle of corresponding batch cache data and outputting lifecycle configuration rules; S7, iteratively updating to adapt to on-site production needs. When quality problems such as excessive ash content in refined coal occur, the entire process data can be traced back through batch identifiers to quickly locate abnormal links. Simultaneously, it provides a precise data foundation for subsequent cache aggregation and hierarchical scheduling, significantly improving the refined management level of coal washing production.

The present invention discloses an online soft measurement method for clean coal ash in a shallow trough sorting process of lump coal, relates to the technical field of coal sorting and processing, and solves the problems of complexity, poor adaptability and high cost of the existing clean coal ash prediction method in the shallow trough sorting process of lump coal. The method comprises: real-time data collection, including clean coal output, tail coal output, qualified medium density and dual-energy X-ray image of clean coal; inputting the R value of each pixel point in the dual-energy X-ray image of clean coal collected in real time into a trained clean coal ash prediction main model, and obtaining the clean coal ash prediction value after processing; processing the real-time collected clean coal output and tail coal output to obtain the clean coal yield; and inputting the clean coal yield and the qualified medium density after normalization into the trained clean coal ash compensation model, and obtaining the clean coal ash error prediction value after processing; using the clean coal ash error prediction value to compensate the clean coal ash prediction value to obtain the final clean coal ash prediction result.

This invention discloses a coal tar pitch-based supercapacitor carbon, its preparation method, and its application. The preparation method of the supercapacitor carbon includes: dissolving refined coal liquefaction pitch in an organic solvent, and adding ZnCl2, KCl, and potassium citrate to obtain a pitch solution containing an ionic molten salt activator; immersing a biomass template in a dopamine aqueous solution, and then mixing it with the pitch solution to obtain a biomass template-pitch composite; subjecting the composite to oxidation, carbonization, activation, washing, and drying to obtain the supercapacitor carbon; and then mixing the supercapacitor carbon with a nitrogen source and a phosphorus source and heating to perform graphitization doping, thus obtaining the final product. This invention prepares pitch pitch-based supercapacitor carbon with high specific surface area, excellent electrochemical performance, and environmental advantages through a biomass template method, demonstrating the great potential of this preparation process in the field of energy storage.

The application discloses a kind of ash content of refined coal alternate detection pretreatment device and pretreatment method, it is related to ash content detection pretreatment technical field of refined coal.The ash content of refined coal alternate detection pretreatment device includes two-division classifier of division;Further include vertical feeding mechanism;The vertical feeding mechanism includes vertical screw conveyor and transition material guiding mechanism, vertical screw conveyor is used to the reserved coal material that two-division classifier bottom side discharges is transported to two-division classifier top.The application is formed by oblique material guiding box and electric control gate cooperation temporary storage reserved coal sample container, it is convenient to stir shaft to the reserved coal sample that two-division classifier bottom discharges needs to be mixed as a whole automatically, and cooperate vertical screw conveyor to transport again and automatically put into two-division classifier to the coal sample that remains to be reserved and carry out division, so repeatedly, can realize the automatic mixing division processing of each reserved sample, without manual repeated operation, improve processing efficiency and convenience.

The invention discloses a coal gasification slag classification flotation method and complete equipment based on a gas-liquid-solid three-phase system, which mainly comprises a flotation component, a classification component, a discharge component and a bubble generating component, wherein the flotation component comprises a slurry feeding pipe, a reagent feeding pipe and a flotation tank; the classification component is mainly a screening plate; the discharge component comprises a discharge plate, a clean coal discharge tank, a tailings discharge pipe and an electric valve; and the bubble generating component comprises a bubble generator and a gas inlet. In the actual operation process, the pretreated gasification slag slurry enters the flotation tank through the feed port, and the gasification slag of different particle sizes is formed in the four flotation tanks through the grading action of the primary, secondary and tertiary screening plates. The refined carbon particles in the gasification slag are combined with the microbubbles generated by the bubble generator under the action of the flotation agent to form mineralized bubbles, and are discharged from the primary, secondary, tertiary and quaternary clean coal discharge tanks respectively to form four kinds of concentrate products with different ash contents, while the tailings at the bottom are discharged through the primary and secondary tailings discharge pipes. The device has a simple structure, is easy to disassemble, convenient to maintain and easy to operate, and can be used for integrated continuous operation of graded flotation of gasification slag.