315 results about "Coal gasification" patented technology

The invention discloses a method for preparing a porous carbon material by recycling coal gasification slag and semi-coke wastewater, which comprises the following steps: by taking coal gasification fine slag as a carrier and semi-coke wastewater as a phenol source, carrying out flotation-acid leaching modification on the fine slag to purify a carbon-rich component and optimize the surface adsorption activity of the carbon-rich component; then fully adsorbing phenolic substances in the wastewater by utilizing the modified slag body; introducing a composite aldehyde cross-linking agent, and initiating an in-situ phenolic aldehyde polymerization reaction to generate a composite precursor; the precursor is subjected to high-temperature carbonization and alkali activation pore forming, and finally the porous carbon material with the characteristics of high specific surface area, rich graded pores and low ash content is prepared. According to the process, full-amount collaborative recycling of the two wastes is achieved, and the process is green and free of secondary pollution. The obtained material is high in carbon content and rich in defect structure and surface functional groups, shows excellent adsorption capacity and catalytic carrier performance, can be widely applied to the fields of deep purification of water pollutants, adsorption of volatile organic compounds, energy catalysis and the like, and has remarkable environmental protection benefits and resource economic values.

The utility model relates to a raw gas source upgrading system for an internal heating type vertical furnace. The raw gas source upgrading system comprises a dry distillation furnace, a carbon dioxide removal device and a pure oxygen preparation device, the device further comprises a first multi-stage mixer, a second multi-stage mixer, a gas sampling analysis tube and a gas component detector. Pure oxygen is adopted as a combustion improver, so that the content of nitrogen in the raw gas is greatly reduced, and the application scene of coal gasification production and deep processing of the internal heating type vertical furnace is expanded; the components of combustion-supporting gas, combustible gas and inert gas in mixed gas in a lattice wall of the dry distillation furnace are controlled by adopting double-circulation control of carbon dioxide and recirculated gas, the combustion intensity and the uniformity degree are strictly controlled under the condition that dry distillation heat supply is met, and scabbing and burning loss of a dry distillation furnace body are avoided.

The application discloses an energy-saving, efficient and adjustable alcohol pre-gas ammonia production process method, and particularly comprises the following steps: S1, a raw material gas is separated from a pressurized coal gasification methanol device as alcohol pre-gas and is sent to a shift device of synthetic ammonia through a sealed pipeline; S2, when entering the shift device, the alcohol pre-gas is mixed with a crude synthetic gas to form a mixed gas, then high-pressure steam is introduced to adjust the water-gas and increase the mixed temperature, carbon monoxide is reacted with water vapor in the shift device, and hydrogen gas is prepared as a shift gas; S3, the shift gas is subjected to low-temperature methanol washing and liquid nitrogen washing, then nitrogen gas produced by air separation is added, a synthetic gas is prepared, and the synthetic gas is sent to an ammonia synthesis device. The energy-saving, efficient and adjustable alcohol pre-gas ammonia production process method is adopted, raw material gas is comprehensively utilized in an energy-saving mode, the methanol and synthetic ammonia production yield is flexibly adjusted, and enterprise benefits are improved.

The invention discloses a quality-divided separation and high-valued utilization method of coal gasification slag, a generated product and application, and belongs to the technical field of high-valued recycling of coal gasification slag. According to the method, the coal gasification slag is classified by adopting an alkali fusion-acid leaching two-step method, components in the coal gasification slag are classified into pure carbon components and a metal-containing acid leaching salt solution, a high-valued utilization method is provided for the classified components, and the carbon components are activated into an active carbon electrode material with a high specific surface area and applied to the field of energy storage. The metal-containing acid leaching salt solution is prepared into the metal cross-linked hydrogel, and the metal cross-linked hydrogel is applied to the field of coal flame retardance. The method can effectively solve the technical problem that the overall utilization is restricted by carbon ash caused by multi-metal component mixing and high carbon content of the coal gasification slag in the prior art.

The invention discloses a coal gasification control optimization method based on a dual-channel fusion attention mechanism. The method comprises the following steps: firstly, acquiring industrial data in a coal gasification operation process and constructing a multi-dimensional time sequence data set containing a process operation variable and a target variable; constructing a dual-channel fusion attention mechanism network model, and training the dual-channel fusion attention mechanism network model to obtain a coal gasification target variable prediction network; and then optimizing the process operation variable by using a particle swarm optimization algorithm in combination with the coal gasification target variable prediction network to obtain an optimal value of the process operation variable, and acting the optimal value on coal gasification equipment so as to realize multi-target optimization control of coal gasification. According to the method, the modeling precision of complex dynamic behaviors in the coal gasification process can be effectively improved, error accumulation of traditional mechanism modeling is reduced, calculation efficiency and industrial applicability are both considered, and reliable model support is provided for operation optimization and multi-objective decision making in the coal gasification process.

The invention provides a method for preparing a poly-aluminum and functional silicon material by activating coal gasification slag and waste hydrochloric acid through microwave synergistic mechanical force, and belongs to the technical field of industrial solid waste recycling. The method comprises the following steps that the coal gasification slag is sequentially subjected to microwave radiation treatment and ball milling, activated slag and waste hydrochloric acid are subjected to an acid leaching reaction, and aluminum-iron-containing leachate and silicon-rich slag are obtained; extracting the aluminum-iron-containing leaching solution to obtain an iron-rich organic phase and a purified aluminum chloride solution; performing thermal polymerization reaction on the purified aluminum chloride solution to obtain polyaluminum chloride; the method comprises the following steps: carrying out alkaline leaching reaction on silicon-rich slag and waste alkali liquor, adding a structure-directing agent into a sodium silicate solution, and sequentially carrying out aging, solution pH value adjustment and crystallization precipitation to obtain mesoporous silica. According to the method, the aluminum-silicon leaching rate is remarkably increased through microwave-mechanical force synergistic activation, synergistic and efficient treatment of the three kinds of waste including the coal gasification slag, the waste hydrochloric acid and the waste alkali liquid is achieved, the technological process is closed, the product additional value is high, and the environmental and economic benefits are remarkable.

The invention relates to the technical field of solid waste treatment, in particular to a zeolite-based porous adsorption material and a preparation method thereof. The zeolite-based porous adsorption material is prepared from light particles and alkali liquor through a zeolitization reaction, and the light particles are prepared from the following raw materials in parts by mass: 30-60 parts of regenerated micro powder, 5-15 parts of red mud, 5-15 parts of glass powder, 10-40 parts of solid waste powder and 5-15 parts of a foaming agent; the regenerated micro powder is cement-based construction waste regenerated micro powder, and the solid waste powder comprises one or more of fly ash, coal gangue and fine coal gasification slag; the foaming agent comprises charcoal and / or rice hull ash. The multi-solid-waste zeolite-based porous adsorption light particles with excellent performance and good economic and environment-friendly benefits are prepared by taking the construction waste regenerated micro powder as a main raw material and synergistically using various solid wastes and the foaming agent.

The invention discloses a coal gasification fine slag and coal slime collaborative flotation treatment method based on assistance of oily sludge, and relates to the technical field of industrial solid waste resource utilization. The method comprises the following steps: 1) pretreating the oily sludge; (2) mixing the fine coal gasification slag and the oily sludge, pulping and grinding; 3) preparing ore pulp; and 4) flotation separation. According to the method, oil-containing sludge is used for replacing part of a traditional flotation reagent, efficient enrichment of carbonaceous and oil in the coal gasification fine slag and coal slime and separation of inorganic gangue are achieved through the steps of pretreatment, mixing, flotation and the like, and a clean coal product with the ash content smaller than or equal to 10% and the heat value larger than or equal to 7000 kilocalories and tailings with the oil content smaller than or equal to 1% (the lowest value can be 0.5% or below) and the ash content larger than or equal to 80% are obtained. According to the method, the dosage of traditional flotation reagents can be greatly reduced, the treatment cost is reduced, synergistic recycling and harmlessness of the three kinds of solid waste are achieved at the same time, and economic and environmental benefits are achieved.

The invention belongs to the technical field of solid waste utilization and glass ceramics, and relates to a method for preparing glass ceramics from coal gasification slag and application of the method. The method comprises the following steps: S1, mixing coal gasification coarse slag and coal gasification fine slag, then adding an activating agent, and carrying out roasting and vibratory screening in sequence, so as to obtain a precursor; and S2, crushing the precursor in the step S1, melting, cutting, crystallizing and cooling to obtain the microcrystalline glass. According to the invention, the coal gasification coarse slag and the coal gasification fine slag are used as raw materials, and residual carbon contained in the fine slag is used for providing heat by mainly adopting activation, melting and crystallization treatment methods, and meanwhile, a stable silicon dioxide phase on the surface of the coal gasification slag is converted into active silicate, so that the mechanical property and the chemical stability of the microcrystalline glass are improved.

The application discloses a preparation method of high-content coal gasification slag-based cement, and belongs to the technical field of solid waste resource utilization. High-carbon coal gasification slag, steel slag, carbide slag and clay are used as raw materials, low-carbon coal gasification slag, circulating fluidized bed fly ash and desulfurization gypsum are used as active admixtures, the rate value is designed and the configuration proportion of various raw materials and active admixtures is calculated according to the chemical composition of the finally prepared high-content coal gasification slag-based cement; then the various raw materials and active admixtures are pretreated, the pretreated raw materials are mixed, ball milled and sieved to prepare cement raw materials and further prepare cement clinker; finally, the cement clinker and the active admixtures are mixed, ball milled and sieved to prepare the high-content coal gasification slag-based cement. The high-content coal gasification slag-based cement is prepared by fully utilizing industrial solid wastes, can replace natural raw materials for producing cement, meets the national "double carbon" planning, and is a low-carbon, environment-friendly and green cement preparation method.

The invention discloses a circulating blast furnace top gas high-temperature reforming system and method, and relates to the technical field of circulating blast furnaces. The circulating blast furnace top gas high-temperature reforming system comprises a circulating blast furnace, a gasification furnace device, a reformed gas treatment module and a waste heat recovery module, the gasification furnace device is connected with the circulating blast furnace, and the reformed gas treatment module is connected with the gasification furnace device and the circulating blast furnace. The reformer device is configured to receive the reformed gas discharged by the gasifier device, treat the reformed gas and then input the treated reformed gas into the circulating blast furnace; and the waste heat recovery module is configured to receive coal ash discharged by the gasification furnace device and preheat lump coal entering the gasification furnace device by utilizing waste heat of the coal ash. Based on the technical scheme disclosed by the invention, the heat utilization rate in the coal gasification process is remarkably improved, the energy consumption in the coal gas reforming process is reduced, and resource utilization and low-carbon clean development of metallurgical coal gas can be realized.

The application relates to an IGCC system coupled with biomass and near-zero emission high-purity CO2 capture and a working method thereof, and belongs to the field of coal gasification combined cycle power generation coupled with biomass, in particular to an IGCC system coupled with biomass and near-zero emission high-purity CO2 capture and a working method thereof. The application is used for solving the problems that the existing IGCC system has low CO2 capture rate, high energy consumption, low power generation efficiency, and a large amount of nitrogen generated in the oxygen taking process and difficult to effectively utilize. The application comprises an air separation device, a gasification furnace, a sensible heat recovery device, a purification device, a gas power generation unit, a waste heat recovery unit, a steam power generation unit, a biomass fermentation device, a methane reforming unit, an adsorption separation unit and an ammonia synthesis tower. The application is based on the overall coal gasification combined cycle power generation system of post-combustion CO2 capture and oxygen-enriched combustion technology, introduces a biomass ammonia synthesis process, generates H2 and CO through biomass fermentation and reforming, utilizes N2, and improves the system efficiency.

The present invention easily yields, in a short time, a gas consisting mainly of high-concentration methane, by gasifying a yielded biocoal carbonization product. In this subcritical-water treatment device, a first-stage treatment at 150-220°C for a predetermined and prescribed treatment time is set in a first-stage temperature range not higher than 220°C, and a second-stage treatment at 110-130°C for a predetermined and prescribed treatment time is set in a second-stage temperature range not higher than 130°C. In the first-stage treatment, low-grade coal as a raw material to be treated is deprived of moisture to form voids in a volume amount of 20% or larger per unit volume of the low-grade coal, and molten / liquefied components are formed from some of the low-grade coal. In the second-stage treatment, the molten / liquefied components are solidified in the voids and caused to adhere to components in the other portions that have not been melted or liquefied, thereby filling the voids and yielding a biocoal carbonization product having a void content of 9% or less with respect to the entire volume. This device for utilizing reformed low-grade coal is equipped with a gasification means for methanating the biocoal carbonization product, the gasification means gasifying, in a non-oxidization state, the reformed low-grade coal yielded from a bio-based carbonization product to yield methane.

This invention relates to the field of industrial wastewater technology, and discloses a resource recovery and zero-discharge treatment process and system for coal gasification wastewater. The resource recovery and zero-discharge treatment process for coal gasification wastewater provided by this invention achieves zero discharge and resource recovery after treatment, with the produced water fully meeting reuse requirements. No wastewater enters conventional downstream advanced treatment and zero-discharge systems. Simultaneously, the salt content in the wastewater is utilized to produce high-value products for sale. The system is not affected by the temperature and quality of the coal gasification wastewater, thus completely solving the shortcomings of conventional biological methods for treating coal gasification wastewater.

The utility model discloses an oxidation leaching separation treatment system for heavy metals in coal gasification slag, which belongs to the technical field of mine solid waste treatment and comprises a multi-element free radical pre-oxidation device, a primary slag-slurry separation and recovery device, a three-stage leaching device and a secondary slag-slurry separation and recovery device. The multi-element free radical pre-oxidation device is used for adding an oxidant solution into the coal gasification slag in three stages and simultaneously carrying out ozone oxidation and mixing stirring to obtain coal gasification slag slurry; the primary slag-slurry separation and recovery device is used for carrying out slag-slurry separation on coal gasification slag slurry, recovering an excessive oxidant solution and screening out coal gasification slag; the three-stage leaching device is used for adding a mixed organic acid solution into the screened coal gasification slag in three stages for mixing and stirring, and transferring heavy metals in the coal gasification slag from a solid phase to a liquid phase step by step to obtain tail slurry. The device is simple to operate, low in cost and good in separation effect, and achieves the purpose of effectively controlling the heavy metal leakage risk of the coal gasification slag.

The utility model belongs to the technical field of blending combustion carbon reduction of a thermal power plant, and particularly provides a coal-fired thermal power plant boiler under-pressure gas blending combustion system, which is characterized by comprising a power station boiler (1), a steam turbine generator (3), a gas supply device (4), a gas supply device (5), a gas supply device (6), a gas supply device (7) and a gas supply device (8), and the power station boiler (1) is used for burning coal to produce steam and supplying the steam to the steam turbine generator (3). The pressurized combustible gas comes from hydrogen prepared by coal gasification or mixed gas of certain components; and the pressure reducing equipment is arranged at the upstream of the power station boiler (1) and is used for feeding the pressurized combustible gas into the power station boiler (1) after reducing the pressure of the pressurized combustible gas. In the system, the power station boiler (1) uses coal as main fuel to produce steam, combustible gas can also be combusted to support combustion or replace part of coal, the pressure reduction equipment reduces the pressure of the pressurized combustible gas and then feeds the pressurized combustible gas into the power station boiler (1) to be combusted, and the pressure requirement of blending combustion is met.

The invention discloses carboxyalkylated lignin as well as a preparation method and application thereof in coal gasification wastewater coal slurry, and belongs to the technical field of coal water slurry. The carboxyalkylated lignin with a three-dimensional structure is obtained by introducing a carboxyalkyl branched chain into a lignin structure through a graft copolymerization method. The preparation method comprises the following steps: dissolving lignin in deionized water or isopropanol, adjusting the pH value to 11-12, adding a reaction reagent with a carboxyl functional group and an alkyl chain, and reacting in a water bath at 60-80 DEG C for 2-4 hours; then adjusting the pH value to 6-7; and washing, centrifuging and purifying to obtain the carboxyalkylated lignin. Carboxyalkylated lignin is used as a dispersing agent to be applied to a system for preparing coal water slurry from coal gasification wastewater, coal particles can be fully dispersed and stabilized in a complex coal gasification wastewater system by using fewer adsorption sites, and the carboxyalkylated lignin can be used as the dispersing agent to remarkably improve the slurrying performance and long-term stability of coal gasification wastewater coal slurry.

The application discloses an aerobic-anaerobic bacteria combined coal pretreatment biological gas production device, which comprises a gas blowing system, a bacterial population pre-culturing system, an aerobic-anaerobic biological combined pretreatment and gas production system and a gas-liquid two-phase collection and monitoring system. The application also discloses a gas production method of the gas production device. The application takes coal as a substrate, and under suitable conditions, carries out culture and optimization of a methanogenic bacterial population, and simulates indoor biological gas production effects under different coal rank, bacterial type, combined pretreatment mode, treatment time and metabolic environment conditions. The application adopts an integrated combined processor to combine aerobic bacteria and anaerobic bacteria for pretreating coal, so that coal-based biological gas production can be safely and efficiently carried out, and the application has important environmental benefits and broad application prospect.

The invention discloses a coal gasification slag-based aerogel porous material and application thereof, and belongs to the field of compounds of non-metallic elements. The preparation method comprises the following steps: by taking regional bulk coal-based solid waste-coal gasification slag and a self-gelling natural polymer material as raw materials, pretreating the coal gasification slag to remove heavy metal ions, then preparing dispersion liquid from the coal gasification slag and a self-gelling natural polymer material solution, and carrying out first freeze drying to obtain a solidified material; then, soaking by using a cross-linking agent to form cross-linked aerogel, fully soaking the cross-linked aerogel by using a tert-butyl alcohol solution, and performing freeze drying for the second time to obtain the coal gasification slag-based aerogel porous material. The prepared composite aerogel has super-hydrophilicity, excellent water absorption and water retention properties and excellent photo-thermal conversion performance. Due to the characteristics, the composite aerogel can be used as a soil water-retaining agent or a soil conditioner; or is used as an interface evaporation material for treating high-salinity wastewater.

The application discloses a kind of heating and processing device for fine slag fluid of pulverized coal gasification, belong to the field of fine slag fluid resource utilization of pulverized coal gasification, including main combustion chamber, secondary combustion chamber and shaft flue;Between main combustion chamber and secondary combustion chamber, and between secondary combustion chamber and shaft flue are provided with cyclone separator, the back material part of the cyclone separator is communicated with main combustion chamber, and energy recovery part is further provided in the shaft flue, and the energy recovery part is communicated with main combustion chamber, and the fuel of the main combustion chamber is the fine slag generated after pulverized coal gasification;The fine slag after pulverized coal gasification is burned by the main combustion chamber, and the energy in tail gas is recovered and filled into main combustion chamber for secondary use by energy recovery part;Secondary combustion chamber is simultaneously used to burn material again, to realize the resource utilization of fine slag after pulverized coal gasification, solid particles and gas are separated by cyclone separator, and solid particles are burned again in main combustion chamber, so that fine slag after pulverized coal gasification is burned more fully.

The invention provides a coal-to-methanol production system. The coal-to-methanol production system comprises a coal gasification unit, a water gas conversion unit, a synthesis gas purification unit, a methanol synthesis unit, a methanol rectification unit and a methanol storage unit which are sequentially connected in series, the coal gasification unit is also connected with the slag water treatment unit; the water-gas conversion unit is also connected with the power generation unit; and the synthesis gas purification unit is also connected with the sulfur recovery unit. According to the coal-to-methanol production system, the effective coal-to-methanol production system is provided through cooperative use of the equipment, meanwhile, heat and available resources in waste can be recycled when the waste in production is treated, waste heat in production can be utilized for power generation, power consumption of a factory can be reduced, and the production cost is reduced.

The present application belongs to the technical field of wastewater treatment, and discloses a coal gasification slag-based composite particle electrode, a preparation method thereof, and a solar-driven photoelectric synergistic three-dimensional electrode reactor device. The coal gasification slag-based composite particle electrode is obtained by loading nickel oxide and copper oxide active components on coal gasification fine slag as a carrier after activation treatment. The three-dimensional electrode reactor containing the composite particle electrode comprises a reactor shell, an anode plate, a cathode plate, a particle electrode layer, an aeration system, a solar light condensing device, a solar energy supply system, and a power supply, and preferably further comprises a circulating system. The specific surface area and active sites of the carrier are increased through activation treatment, and the synergistic catalysis of nickel oxide and copper oxide is utilized to achieve simultaneous and efficient removal of ammonia nitrogen and humic acid in landfill leachate. The present application utilizes coal gasification solid waste resources in the field of water treatment, and has simple preparation method, stable particle electrode performance, and high treatment efficiency.

The invention discloses a preparation method of a polypropylene composite filler based on electrocatalytic oxidation coal gasification fine slag as a raw material, the preparation method comprises the steps of raw material treatment, system modification, material electrolytic oxidation and material post-treatment, the polypropylene composite filler comprises polypropylene resin and the polypropylene composite filler, based on the total weight of the composite material, the usage amount of the composite filler is 5-20wt%, and the usage amount of the composite filler is 5-20wt%. The raw materials comprise an environment-friendly functional auxiliary agent accounting for 0.5-5% of the total weight of the composite material, and the functional auxiliary agent is selected from one of a weather-proof agent, a halogen-free flame retardant and a bio-based antibacterial agent. The method has the advantages that the low-temperature plasma pretreatment and the composite modifier assisted electrocatalytic oxidation process are combined, a large number of active sites can be quickly and efficiently introduced on the surface of the coal gasification fine slag through the low-temperature plasma treatment, and the surface energy and the reaction activity of the coal gasification fine slag are remarkably enhanced.

The invention discloses an iron-carbon catalytic material based on coal gasification slag as well as a preparation method and application of the iron-carbon catalytic material, and belongs to the technical field of industrial solid waste recycling. The preparation method comprises the following steps: adding dried coal gasification slag into an oxalic acid solution for extraction to obtain a suspension A; adding a reducing agent into the suspension A, carrying out precipitation reaction, and then carrying out solid-liquid separation to obtain a solid B; and sintering the solid B to obtain the composite material. The invention further discloses the iron-carbon catalytic material based on the coal gasification slag prepared by the method and application of the iron-carbon catalytic material. According to the method, the industrial solid waste coal gasification slag is used as a carrier, endogenous iron in the coal gasification slag is converted by adopting an acid leaching-reduction precipitation-roasting method, the iron-supported catalytic material with a stable structure and excellent performance is obtained, the process is green, the cost is low, the organic wastewater treatment capacity is excellent, and the practical value is relatively good.

The utility model relates to the technical field of coal chemical industry, in particular to a coal gasification black water circulation and black water waste heat recycling system. The coal gasification black water circulation and black water waste heat recycling system comprises a synthesis gas washing tower, a high-pressure flash tank, a low-pressure flash tank, a black water heat exchanger, a vacuum flash tank, a settling tank, a grey water tank, a low-pressure flash steam stripping tower and a high-pressure flash steam stripping tower. The coal gasification black water treated by the coal gasification black water circulation and black water waste heat recycling system disclosed by the utility model can be recycled as circulating water of a synthesis gas washing tower, so that the cyclic utilization of water resources is realized, the use of fresh water and the discharge of waste water are reduced, and the production cost and the environmental pressure are reduced. Meanwhile, the problem that a black water pipeline is scaled and blocked due to high temperature is solved, waste heat of the black water can be fully replaced for effective utilization, carbon is reduced, energy is saved, the purpose of cooling the black water is achieved, the cooling cost of a vacuum flash evaporation system is saved, and continuous and reliable economic benefits are created for enterprises.

The invention relates to the technical field of cement, and discloses high-strength low-energy-consumption cement and a preparation method thereof.The high-strength low-energy-consumption cement is prepared from, by weight, 65-80 parts of cement clinker, 180-230 parts of quartz sand, 4-10 parts of waterborne epoxy resin, 0.5-1.2 parts of lignin water reducing agent and the like; the cement clinker comprises the following components in parts by weight: 80-90 parts of limestone, 1.6-6.6 parts of coal gasification ash, 2-5.8 parts of sandstone tailings and the like. The lignin water reducer contains a large amount of sulfonate groups, so that the fluidity of the concrete is remarkably improved under the condition that the water consumption is not increased, and the mechanical strength of the cement mortar is improved. The lignin water reducer contains a large amount of chemical imino groups and can be subjected to a curing reaction with the epoxy resin, the cohesion of the cement mortar is improved through the cementing effect of the epoxy resin, and the mechanical properties such as compression resistance and breaking strength are improved.

The application provides a method and system for preparing low-carbon cement by using coal gasification ash in a graded manner, and the method comprises the following steps: dividing the coal gasification ash into carbon-rich ash, medium-carbon ash and carbon-poor ash according to the carbon content; feeding the carbon-rich ash and raw coal into a coal powder preparation workshop to prepare a first mixture as a clinker calcination fuel; feeding the medium-carbon ash into a raw material preparation workshop after metering to be ground and dried together with other raw material components; preparing clinker by decomposing and calcining the second mixture after mixing uniformly and cooling; feeding the mixture of the clinker and other cement components and the carbon-poor ash into a cement preparation workshop to prepare finished cement. The carbon content of the coal gasification ash is divided in a graded manner to obtain coal gasification ash materials with different characteristics, and the cement production process characteristics are combined to be used in three process sections of raw material grinding, clinker calcination and cement grinding, so that the coal gasification ash is used in a large amount and in a large scale in the building material resources, and the carbon emission in the cement clinker production process is reduced.

The invention discloses a method for preparing functional filler from fine coal gasification slag and an application method, and belongs to the field of comprehensive utilization of solid waste, the method comprises the following steps: S1, heating the collected fine coal gasification slag, weighing and calculating the moisture and ash content of the initially collected fine coal gasification slag; s2, determining the metal element composition and the metal content of the treated coal gasification fine slag by adopting an atomic absorption spectrometer to obtain the dosage of strong acid; s3, strong acid is added, the treated fine coal gasification slag is placed in a water bath kettle with the constant temperature being 80 DEG C to react for 3 h, and a solid-liquid mixture is obtained; s4, carrying out suction filtration and washing operation on the solid-liquid mixture; s5, putting the filter cake into a drying oven at 105 DEG C, and drying for 24 hours; and S6, calcining the dried filter cake in a muffle furnace at 815 DEG C for 1 hour to obtain the mesoporous silica functional filler. Most harmful substances contained in the prepared composite material are removed, the national standard can be met, and the prepared composite material has high tensile strength and compressive strength.

The present application provides a coal gasification black water treatment device system and method, which adopts two-stage vortex separation devices for heat recovery and solid-liquid separation, wherein the secondary vortex separation device improves the solid-liquid separation effect by adding a specific composite medicament, and the treated grey water meets the requirements of the subsequent biochemical treatment; the coal gasification black water treatment device system cancels the high-pressure flash evaporation device, low-pressure flash evaporation device, deoxygenation device and sedimentation device required to be arranged in the traditional coal gasification black water treatment device system, and solves the problems of complex existing process flow, large equipment occupation area and low heat utilization rate.

The present application belongs to the technical field of natural gas preparation, and relates to a system and method for preparing natural gas by super-high-temperature steam accelerated coal metamorphic evolution hydrocarbon generation. The system comprises: a feeding device for pneumatically feeding coal powder; an accelerated coal metamorphic evolution hydrocarbon generation reactor, which is provided with a material steam inlet, a coal powder inlet and a product outlet, the material steam inlet is connected with a material steam supply device for inputting material steam, and the coal powder inlet is connected with the feeding device; and a heating component for heating the accelerated coal metamorphic evolution hydrocarbon generation reactor. The natural gas preparation system and method of the present application is a derivative technology based on the study of coalbed methane genesis mechanism, has the characteristics of not adding oxygen to participate in coal gasification and not adding hydrogen to participate in carbon reaction, overturns the traditional coal-to-natural gas technology concept, has high energy efficiency, low energy consumption, high methane output rate and remarkable energy-saving effect, and is an advanced energy conversion technology for realizing efficient and clean cascade utilization of coal.