35 results about "Carbolineum" patented technology

A production method of high-structure carbon black based on petroleum-based composite raw oil comprises the following steps: S1, performing fraction cutting on the petroleum-based composite raw oil to obtain crude carbon black raw oil; s2, carrying out solvent extraction on the crude carbon black raw oil to obtain aromatic-rich carbon black raw oil; and S3, vaporizing and cracking the aromatic-rich carbon black raw oil to generate the high-structure carbon black. The method for producing the high-structure carbon black based on the petroleum-based composite raw material oil is different from the domestic existing production process of coal tar and anthracene oil, and the structure degree of the carbon black product can be improved by pretreating the petroleum residual oil and the tail oil, so that the production of the high-structure carbon black product is realized, the domestic raw material source of the high-structure carbon black is broadened, and the production cost of the high-structure carbon black is reduced. And the competitiveness of the product is improved.

The invention relates to the technical field of molten salt chlorination furnaces, in particular to a furnace lining structure and method capable of achieving furnace temperature control and waste heat utilization of a molten salt chlorination furnace, and the furnace lining structure sequentially comprises a metal furnace shell, a heat insulation basalt plate layer, an anthracene oil graphite sealing layer, a first refractory clay brick layer, a phosphate pouring material layer and a second refractory clay brick layer from outside to inside. And a corrosion-resistant metal conduit is pre-buried in the phosphate castable layer. According to the furnace lining structure and method capable of achieving furnace temperature control and waste heat utilization of the fused salt chlorination furnace, the corrosion-resistant metal guide pipe is pre-buried in the phosphate pouring material layer, coarse TiCl4 clear liquid is utilized to circularly absorb heat in the guide pipe, and linkage control of the temperature sensor and the flow adjusting valve is combined, so that the temperature in the fused salt chlorination furnace can be accurately adjusted in real time. And compared with a traditional cooling mode of back spraying of high-solid-content materials, the problem that the gas amount in the furnace is suddenly increased due to spraying evaporation is solved, and the stability of the negative pressure in the furnace is effectively guaranteed.

The invention belongs to the technical field of fuel oil, and particularly relates to hydrogen energy engine fuel oil taking coal-to-oil as a base material and a preparation method of the hydrogen energy engine fuel oil. Comprising the following components: 35-45 parts of coal-based Fischer-Tropsch synthesis crude liquid wax, 5-15 parts of white oil, 2-8 parts of heavy wax, 15-25 parts of hydrogenated anthracene oil, 2-8 parts of fatty acid methyl ester, 15-25 parts of hydrogenated coal diesel oil and 1-5 parts of an additive. The preparation method comprises the following steps: S1, weighing the raw materials according to the proportion of the fuel oil of the hydrogen energy engine; and S2, adding the raw materials into a stirring container, and uniformly stirring to obtain the hydrogen energy engine fuel oil. The fuel oil does not belong to dangerous chemicals, the ignition performance of the fuel oil is superior to that of current national 6 diesel oil, the terminal sale price of the fuel oil is lower than that of the diesel oil, and market requirements are met.

The utility model belongs to the technical field of deep processing of coal tar, and particularly relates to a decrystallized anthracene oil production system which comprises a main decrystallized anthracene oil tank, and a main feeding pipe, a main discharging pipe and a main discharging pump which are arranged on the main decrystallized anthracene oil tank, the auxiliary feeding pipe, the auxiliary discharging pipe and the auxiliary discharging pump are arranged on the auxiliary anthracene removal tank; and the mixing tank is connected with outlets of the main feeding pipe and the auxiliary discharging pipe. Cooling, crystallizing and centrifugally separating anthracene oil extracted from the bottom of the tar rectifying tower to obtain decrystallized anthracene oil and crude anthracene; and removing anthracene, phenanthrene, carbazole and the like in the crude anthracene through subsequent refining to obtain heteroanthracene-removed oil. Generally, the viscosity of impurity-removed anthracene oil is large, the viscosity of de-crystallized anthracene oil is small, the impurity-removed anthracene oil and the de-crystallized anthracene oil are conveyed into a mixing tank through a main discharging pipe and an auxiliary discharging pipe respectively and mixed in the mixing tank, and the feeding amount of the impurity-removed anthracene oil and the feeding amount of the de-crystallized anthracene oil are adjusted by adjusting the flow of a main discharging pump and the flow of an auxiliary discharging pump, so that the viscosity of mixed liquid (mixed anthracene oil) in the mixing tank is adjusted; therefore, the viscosity requirements for different purposes can be met.

The invention discloses a tar distillation process for customized production. A device for the tar distillation process comprises a raw material tar tank, a dehydrating tower, a heating furnace, a main tower, an extraction valve, an extraction pipeline, a purging valve, a purging pipeline, a dephenolization oil tank, a naphthalene oil tank, an oil washing tank, an anthracene oil tank, a carbon black oil tank, an oil distribution tank and a configuration pipeline. The tar distillation process comprises the following steps: carrying out production adjustment by controlling start-stop combination of side-line naphthalene oil, washing oil and anthracene oil extraction, and customizing oil products by configuring pipelines. In the normal production period of the side line of the tar distillation process, flexible adjustment of extraction and extraction stopping aiming at a single component can be realized, and meanwhile, final products of other extracted components are not influenced; according to the requirements of markets or customers, oil is debugged and distributed in proportion, customized production of various oil products is flexibly achieved, and benefit maximization is achieved on the premise that the quality is met.

The integrated tar distillation method is characterized in that a tar distillation tower, an industrial naphthalene distillation tower and an asphalt reaction kettle are integrally arranged, and the integrated tar distillation method is characterized by comprising the following steps: a, raw material tar pressurized and sent by a raw material tank group through a tar pump is subjected to heat exchange through three-mixed oil, anthracene oil and medium-temperature modified asphalt and then enters a tar dehydration tower; b, the dehydrated anhydrous tar is pumped out from the bottom of the tower by an anhydrous tar pump, and a part of the dehydrated anhydrous tar is subjected to heat exchange through the anhydrous tar and high-temperature modified pitch heat exchanger and then enters a tar dehydrating tower, c, three-mixed oil is distilled out from the top of the tar distillation tower, d, anthracene oil is extracted from the top and the middle of the anthracene tower, and e, in a pitch reaction kettle, the anthracene oil is extracted from the top of the anthracene tower and the middle of the anthracene tower. The medium-temperature modified asphalt is produced from the medium-temperature asphalt through long-time standing polymerization reaction. The integrated tar distillation method has the advantages that energy consumption and carbon emission are reduced, energy consumption is reduced, heat loss is reduced, the occupied area is saved by about 30%, and energy consumption is saved by 46.7% compared with the standard energy consumption.

The present application relates to the separation process optimization field of light phase pitch, and discloses a process method for improving the yield of light phase pitch, comprising: fully mixing coal-based soft pitch raw materials and mixed solvents in a pipeline according to a preset ratio to form a uniform mixed solution; performing temperature raising treatment on the mixed solution, so that the mixed solution reaches a preset temperature interval; making the heated mixed solution enter a settling tank, and standing in the settling tank according to an optimal load to reach a preset optimal standing time; continuously taking out light phase pitch from a liquid outlet of a light phase solution tank at the upper part of the settling tank, continuously taking out heavy phase pitch from the bottom of the settling tank through a heavy phase pump during the taking-out process, continuously supplementing anthracene oil into the settling tank from the lower part of the heavy phase pitch solution settling tank during the taking-out process of the light phase pitch and the heavy phase pitch, and conveying the heavy phase pitch after being mixed with the anthracene oil to a rear-end process for solvent recovery and reprocessing.

The invention relates to a novel high-temperature coal tar fraction separation process and system, and belongs to the technical field of coal tar processing, raw material tar is dehydrated to obtain anhydrous tar, the anhydrous tar is heated to 380 DEG C for reduced pressure distillation, three mixed oil, anthracene oil and maltha are extracted at the same time, the maltha and an organic solvent are mixed and heated to 310-330 DEG C, and the mixture is cooled to the room temperature to obtain the high-temperature coal tar fraction. And then carrying out supercritical extraction to obtain hard asphalt and an extraction mixture, and separating the extraction mixture to obtain an organic solvent and high-performance carbon material raw material asphalt. The high-temperature coal tar fraction separation process disclosed by the invention is simple to operate and stable in operation, and can be used for producing a high-performance carbon material asphalt raw material which contains ultralow QI (Quality Index) and ash content and is uniform and concentrated in molecular weight.

The present application relates to the field of catalytic technology, and specifically discloses a catalyst carrier for heavy oil hydrogenation and upgrading, and its preparation method and application. The preparation method of the catalyst carrier comprises the following steps: a. mixing diatomaceous earth with an anthracene oil fraction of coal tar in a weight ratio of (2-4): (6-8) at a temperature of not less than 80°C for 1-2 hours to obtain a mixture; b. ultrasonically separating the mixture at a power of 300-500W for 20-40 minutes, then filtering, washing, and drying to obtain a catalyst carrier. The present application uses diatomaceous earth and anthracene oil fraction of coal tar as raw materials to prepare a catalyst carrier. The catalyst carrier can fully disperse the catalyst in the heavy oil, expand the area of ​​the reactive region, and also has excellent temperature resistance, significantly improving the quality and efficiency of oil upgrading.

The present invention relates to a production method of 1,2-benzanthracene, which uses the dianthracene oil fraction in coal tar as raw material. First, a 1,2-benzanthracene narrow fraction of 45% - 55% is obtained by vacuum distillation. Then, medium wash oil is used as a solvent to crystallize the narrow fraction to obtain crude 1,2-benzanthracene with a content of 80% - 85%. The crude 1,2-benzanthracene is sublimated to obtain sublimated 1,2-benzanthracene with a content of 93% - 95%. Finally, methanol washing is carried out to obtain refined 1,2-benzanthracene with a content greater than 98%. The production method of the present invention is a physical extraction method. Different from the synthesis method, there is no chemical reaction, which not only recovers the valuable 1,2-benzanthracene resource in coal tar, but also can avoid the complex operation and environmental pollution of the synthesis method.

The invention relates to the technical field of carbon material preparation, and discloses a preparation method of a high-purity high-temperature-resistant graphite material for a photovoltaic thermal field, the high-purity high-temperature-resistant graphite material is prepared from pitch coke, artificial graphite fine powder and a high-wettability modified binder, and the binder comprises coal pitch, heavy anthracene oil and a surfactant. The preparation method comprises the following steps: micronizing aggregate, mixing and kneading the micronized aggregate and a modified binder at a high temperature, and carrying out secondary grinding to obtain pressed powder with preset grain size distribution; cold isostatic pressing forming is adopted, and the pressure relief time is strictly controlled; the green body is subjected to low-speed heating roasting, dipping densification and high-temperature graphitization treatment, and halogen gas is introduced into a graphitization high-temperature section for chemical purification. According to the invention, a composite aggregate system and a secondary granulation process are matched with a stress release regulation means for a large-size product, so that the technical problems that the large-size graphite product is easy to crack and low in density are solved, and the volume density, mechanical strength, purity and thermal shock resistance of the material are improved.

The invention relates to the technical field of catalysis, and particularly discloses a catalyst carrier for hydrogenation upgrading of heavy oil as well as a preparation method and application of the catalyst carrier. The preparation method of the catalyst carrier comprises the following steps: a, mixing and stirring diatomite and anthracene oil fraction of coal tar in a weight ratio of (2-4): (6-8) at the temperature of not lower than 80 DEG C for 1-2 hours to obtain a mixture; and b, performing ultrasonic separation on the mixture for 20-40 minutes under the power of 300-500W, and then filtering, cleaning and drying to obtain the catalyst carrier. According to the present invention, the diatomite and the anthracene oil fraction of the coal tar are adopted as the raw materials to prepare the catalyst carrier, the catalyst carrier can completely disperse the catalyst in the heavy oil, the area of the reaction active region is expanded, the excellent temperature resistance is provided, and the oil product upgrading quality and the oil product upgrading efficiency are significantly improved.

The application discloses a preparation method of modified coal pitch and a preparation method of carbon material. The preparation method of modified coal pitch comprises the following steps: mixing a plasticizing agent, a synergist and an additive, then adding coal pitch, stirring, heating to 140-160 DEG C, and constant temperature reaction, so that the modified coal pitch is obtained; the plasticizing agent comprises dibutyl phthalate and / or dioctyl phthalate; the synergist comprises one or more of light oil, naphthalene oil, wash oil, phenol oil and anthracene oil; and the additive comprises carboxymethyl cellulose and / or sodium polyacrylate. The application can significantly improve the wettability of the binder coal pitch to the aggregate without reducing the coking value of the coal pitch, makes the modified coal pitch more evenly distributed among the aggregate, and makes the obtained carbon graphite material have lower porosity, higher bulk density and more excellent electrical and mechanical properties, and the carbon graphite material has excellent thermal stability and structural integrity under high-temperature working conditions.

The application discloses a method for preparing aviation kerosene by step-by-step hydrogenation of medium and low temperature coal tar, which adopts a combined process of pre-fractionation, suspension bed and fixed bed. After the whole fraction of medium and low temperature coal tar is preliminarily separated by a feed gas-liquid separation tank, the light component at the top is introduced into a subsequent separation system, the anthracene oil fraction at the side line is introduced into a two-stage hydrogenation cracking reactor as a hydrogen-donor solvent, and the heavy component at the bottom is introduced into a raw material tank as the raw material of the first-stage hydrogenation cracking reactor. The suspension bed hydrogenation cracking is provided with two-stage reactors, the product of the first-stage hydrogenation cracking reactor is introduced into the two-stage hydrogenation cracking reactor for deep hydrogenation cracking after preliminary gas-liquid separation, the anthracene oil separated from the hydrogen-donor solvent raw material and the externally supplemented hydrogen-donor solvent are added to the inlet of the two-stage hydrogenation cracking reactor to promote the hydrogenation cracking of heavy components, and a pressurizing pump and a heating furnace are additionally arranged at the inlet of the reactor. The method can reduce the gas yield in the reaction process, improve the liquid product yield, reduce the coking risk of the device and prolong the operation cycle of the device.

The application discloses a kind of zero addition main focus coal primary metallurgical coke and its preparation method, it is related to coal processing technical field.Primary metallurgical coke includes hydrogen donor and compound coal, compound coal is composed of 20wt%-50wt% lean coal and the rest coking coal, hydrogen donor includes the following weight parts components: 40 parts-60 parts tetrahydro naphthalene;20 parts-30 parts hydrogenated anthracene oil;2 parts-10 parts B 10 C3.By adding hydrogen donor, a large amount of free hydrogen can be provided in the plastic stage of high-volatility coking coal. The free radical fragments formed in the plastic stage of coking coal can still be stabilized in a large amount at the temperature of a large amount of pyrolysis and decomposition of lean coal, so that the plastic stage can be maintained for a long time, and finally the hot and cold strength of coke is significantly improved, so that it reaches the national first-class metallurgical coke standard. Moreover, the resource advantage of high-volatility coking coal can be fully utilized to promote the sustainable development of high-efficiency and low-cost coking industry.

The invention relates to the field of light-phase pitch separation process optimization, and discloses a process method for improving the yield of light-phase pitch, which comprises the following steps: fully mixing a coal-series maltha raw material and a mixed solvent in a pipeline according to a preset proportion to form a uniform mixed solution; heating the mixed solution to enable the mixed solution to reach a preset temperature interval; enabling the heated mixed solution to enter a settling tank, and standing in the settling tank according to an optimal load for a preset optimal standing time; light-phase asphalt is continuously extracted from a liquid outlet of a light-phase solution tank at the upper part of the settling tank, heavy-phase asphalt is continuously extracted from the bottom of the settling tank through a heavy-phase pump in the extraction process, and anthracene oil is continuously supplemented into the settling tank from the lower part of the settling tank of a heavy-phase asphalt solution in the process of extracting the light-phase asphalt and the heavy-phase asphalt; and the heavy-phase pitch and anthracene oil are blended and then conveyed to a back-end process, and solvent recycling and retreatment are carried out. Therefore, the light-phase asphalt with high yield and low impurity content is stably separated from the coal-series maltha raw material.

The invention relates to the technical field of low-phenanthrene oil extraction, in particular to a process for extracting low-phenanthrene oil from coal tar anthracene oil fractions, which comprises the following steps: S1, raw material pretreatment: selecting coal tar anthracene oil fractions as raw materials, and pretreating the coal tar anthracene oil fractions for later use; s2, preparing a solvent, wherein the raw materials of the solvent are selected from heavy alkylbenzene, cyclohexanone, isopropanol, 2-methyltetrahydrofuran and aluminum chloride. According to the invention, the aluminum hydroxide powder can generate a mesoporous material with a porous structure, the sesbania powder is used as a binder in the mesoporous material, so that the aluminum hydroxide powder is in a granular state, and the granular material is soaked in a dilute nitric acid solution, so that an activation effect can be achieved, and the adsorption performance of the treating agent on a nitrogen-containing heterocyclic compound is enhanced; adsorption and impurity removal can be further carried out through bauxite powder treatment before crystallization treatment, so that impurity removal treatment on the anthracene oil fractions of the coal tar is relatively thorough in the pretreatment process, and the extraction efficiency of the anthracene oil is effectively improved.

The invention discloses a preparation method of modified coal pitch and a preparation method of a carbon material, and the preparation method of the modified coal pitch comprises the following steps: mixing a plasticizer, a synergist and an additive, then adding coal pitch, stirring, heating to 140-160 DEG C, and carrying out thermostatic reaction to obtain the modified coal pitch, the plasticizer is prepared from dibutyl phthalate and / or dioctyl phthalate; the synergist comprises one or more of light oil, naphthalene oil, absorber oil, carbolic oil and anthracene oil; the additive comprises carboxymethyl cellulose and / or sodium polyacrylate. According to the invention, on the premise that the coking value of the coal pitch is not reduced, the wettability of the binder coal pitch to the aggregate can be obviously improved, so that the modified coal pitch is more uniformly distributed among the aggregate, and the obtained carbon-graphite material has lower porosity, higher volume density and more excellent electrical and mechanical properties; and the material shows excellent thermal stability and structural integrity under a high-temperature working condition.

The invention discloses an environment-friendly binding agent for blast furnace stemming, a preparation method and environment-friendly anhydrous stemming, and belongs to the technical field of metallurgy. The environment-friendly binding agent is prepared from the following components in parts by weight: 40-50 parts of decrystallized anthracene oil, 10-20 parts of low-temperature modified asphalt, 10-20 parts of pine tar, 20-30 parts of thermoplastic resin and 0-1 part of tetraethyl orthosilicate. The prepared binding agent has the advantages of high residual carbon content, low viscosity, good dispersibility, extremely low moisture content and extremely low benzopyrene content, and the prepared environment-friendly stemming has good working performance and plasticity, is easy to open and has excellent mechanical properties at high temperature, and the erosion resistance is obviously improved. The content of benzopyrene in the stemming is lower than 50 ppm, the field operation environment is remarkably improved, no obvious irritating smoke is generated, and the stemming shows a good application prospect.

The invention relates to the technical field of coal water slurry dispersing agents, in particular to a mixed coal water slurry dispersing agent and a preparation method thereof. The preparation method comprises the following steps: step 1, raw material preparation, a first reaction container, a second reaction container, a mixing container, a first component, a second component and a third component, and the first component comprises anthracene oil, naphthalene, concentrated sulfuric acid, formaldehyde, lime and water. The chemical structure and the chemical components of the dispersing agent are highly stable by controlling the proportion of all the components and the adding speed, the stirring speed and the temperature change in the preparation process, compared with traditional lignin and humic acid dispersing agents, the impurity content is greatly reduced, the adverse effect on the performance of the coal water slurry is reduced, and the dispersing agent has a relatively high dispersing effect and is suitable for industrial production. The coal water slurry is suitable for various different coal qualities, the stability and the fluidity of the coal water slurry are effectively improved, and the coal water slurry can be kept in a stable state for a long time no matter in the storage or transportation process.

The invention provides a desulfurization modification method of high-sulfur petroleum coke and a method for preparing a prebaked anode from the high-sulfur petroleum coke, and belongs to the technical field of prebaked anode production. The desulfurization modification method comprises the following steps: crushing high-sulfur petroleum coke, grading and screening, and then carrying out alkali treatment and acid treatment; then carrying out oxidative desulfurization treatment by using choline chloride-urea, a TiO2 / WO3 heterojunction catalyst, ozone and hydrogen peroxide; and finally carrying out carbonization treatment to obtain the desulfurized modified petroleum coke suitable for preparing the prebaked anode. The method for preparing the prebaked anode comprises the following steps: taking coal pitch and medium-temperature pitch as binders, doping anthracene oil, and carrying out air oxidation to obtain pretreated pitch; the pre-baked anode is obtained by kneading the pre-treated asphalt with the desulfurized modified petroleum coke and roasting at a controlled temperature. According to the method, the sulfur content of the high-sulfur petroleum coke can be reduced to 1.5% or below, and a product of which the ash content, the mechanical strength, the conductivity and other key indexes meet the prebaked anode performance standard is prepared.

The invention discloses a porous carbon and silicon carbon material preparation method based on carbon source pyrolysis, and relates to the technical field of carbon-based functional material preparation. Comprising the following steps: S1, a carbon source pyrolysis and carbonization process: selecting ethylene tar, coal tar, anthracene oil and an oil sludge bag as carbonaceous raw materials, selecting terephthalyl alcohol, benzaldehyde and related derivatives thereof as cross-linking agents, conveying the carbonaceous raw materials subjected to pretreatment such as mixing or a composite precursor generated by reaction of the carbonaceous raw materials to a special reaction furnace containing a pyrolysis section and a quenching section, wherein the pyrolysis section is directly communicated with the quenching section through a flow guide pipeline. Organic chemical raw materials such as ethylene tar, coal tar, anthracene oil and oil sludge bags and chemical carbon-containing by-products are selected as carbonaceous raw materials, terephthalyl alcohol, benzaldehyde and related derivatives thereof are selected as cross-linking agents, and industrial solid wastes such as carbon black fine powder waste can be utilized, so that dependence on a single high-purity carbon source is avoided, and the raw material cost is reduced; high-valued circulation of industrial solid waste is achieved, and resource waste is reduced.

This invention relates to the field of coal tar pitch coking technology, and discloses a method for preparing isotropic coke based on a combination of pretreatment and delayed coking technology. The method includes: mixing coal tar pitch with anthracene oil and then subjecting it to air oxidation pretreatment to obtain oxidized pitch; mixing the oxidized pitch with binder pitch, softening it with anthracene oil, and then adding organic additives and recycled oil to obtain delayed coking feedstock; subsequently subjecting the delayed coking feedstock to a delayed coking reaction to obtain green coke, and then calcining it at high temperature to obtain isotropic coke. This invention regulates the reactivity of coal tar pitch through air oxidation pretreatment and improves the compositional uniformity and flowability of the delayed coking feedstock by combining recycled oil and organic additives, thereby effectively inhibiting the formation of anisotropic structures. The isotropic coke prepared by this method has a high proportion of mosaic structures, high true density, low volatile matter, and high compressive strength, making it suitable for the preparation of isotropic graphite and other carbon materials.

The invention belongs to the technical field of coal chemical industry, and particularly relates to a nickel-based catalyst and a preparation method and application thereof. The preparation method of the nickel-based catalyst comprises the following steps: (1) mixing a solution containing a nickel source, an organic acid and an organic solvent to form a reaction solution, and carrying out a reaction; and (2) carrying out oil-water two-phase separation on the reaction product obtained in the step (1) to obtain the nickel-based catalyst and a water phase. The nickel-based catalyst has the beneficial effects that the nickel-based catalyst has relatively high hydrogenation activity and can be completely dissolved in an organic solvent (such as a circulating solvent, anthracene oil and the like) used for direct coal liquefaction to form a homogeneous or colloidal dispersion system, molecular-level dispersion of the catalyst in a reaction system is realized, and the catalytic activity of the catalyst is improved. And each active site can be in full contact with reactants, so that the catalytic efficiency is greatly improved, and the waste of active components is avoided.

The invention discloses a flash evaporation device for extracting crude anthracene from anthracene oil, comprising a flash evaporation device body, a cylinder fixedly mounted on one side surface of the flash evaporation device body, a bracket fixedly mounted on the piston rod end of the cylinder, a motor fixedly mounted on one side surface of the bracket, a rotating shaft fixedly mounted on the output end of the motor, a limiting block fixedly mounted on one end of the rotating shaft, a sliding groove provided on the outer surface of the limiting block, a limiting ball fixedly mounted on one end of a spring, a fixing plate fixedly mounted on the inner side surface of the flash evaporation device body, a cylinder rotatably mounted on one side surface of the fixing plate, a fixing rod fixedly mounted on one side surface of the cylinder, a first limiting disk fixedly mounted on one end of the fixing rod, and a first limiting plate fixedly mounted on one side surface of the first limiting disk. The invention has the beneficial effects of reasonable structure, convenient control and adjustment, and convenient cleaning of the inner wall of the flash evaporation device body.

The invention discloses a silicon carbide cold ramming paste used during overall building of a submerged arc furnace. The silicon carbide cold ramming paste comprises the following components in parts by weight: 60-65 parts of aggregate, 20-25 parts of powder and 15-20 parts of a binder, the aggregate comprises the following components in parts by weight: 28-31 parts of calcined anthracite, 5-10 parts of calcined petroleum coke and 25-30 parts of silicon carbide; the powder material comprises the following components in parts by weight: 12-16 parts of graphite powder and 5-8 parts of carbon powder; the binder comprises the following components in parts by weight: 2-3 parts of modified pitch, 6-8 parts of coal tar, 3-4 parts of anthracene oil and 1-2 parts of resin. After the silicon carbide cold ramming paste is used for integrally building the furnace, the service life of the furnace bottom is greatly prolonged, the oxidation resistance, wear resistance and scouring resistance of the furnace bottom are greatly improved, and the resistivity of the submerged arc furnace bottom is reduced, so that the energy consumption is reduced, and the thermal insulation performance of a furnace body is enhanced. In addition, the preparation method of the silicon carbide cold ramming paste, provided by the invention, has the above effects.

The utility model relates to the technical field of anthracene oil cooling, in particular to an anthracene oil cooling device which comprises a first cooling device and a second cooling device located below the first cooling device, a cooling pipe is installed in the first cooling device, and the two ends of the cooling pipe extend to the outside of the first cooling device respectively. A copper pipe located on the outer side of the cooling pipe is installed in the first cooling device, a water collecting pipe is installed at the top end in the first cooling device, the lower end face of the water collecting pipe is communicated with a spraying head located above the cooling pipe, heat of anthracene oil in the cooling pipe can be absorbed through the copper pipe, and the heat of the anthracene oil is transmitted to the copper pipe; cold water in the water collecting pipe is sprayed to the outer wall of the copper pipe through the spraying head, heat exchange between the cold water and the copper pipe is achieved, then the cooling efficiency of anthracene oil in the cooling pipe can be improved, then the anthracene oil is blown to the oil collecting barrel through the multiple air outlets, anthracene oil is cooled again while being collected, and therefore the cooling effect is further improved.

The present invention discloses a composite graphite coating, a graphite composite material, and a preparation method and application thereof. The preparation method of the composite graphite coating comprises the following steps: (1) subjecting a mixture of single-particle artificial graphite A and coating agent A to heat treatment to obtain single-particle artificial graphite B; the coating agent A is asphalt and / or anthracene oil; the asphalt includes coal tar pitch and / or petroleum asphalt; (2) subjecting a mixture of single-particle artificial graphite B and coating agent B to carbonization to obtain a composite graphite coating; the coating agent B is one or more of asphalt, anthracene oil and resin; the asphalt includes coal tar pitch and / or petroleum asphalt; the carbonization temperature is 1200-1700°C. The graphite composite material containing the composite graphite coating of the present invention has the characteristics of a dense surface coating structure, and exhibits better first discharge efficiency, capacity retention rate and rate performance when used as a negative electrode material in lithium-ion batteries.

The invention discloses a carbon black oil storage tank cleaning and resource utilization method based on high-pressure jet flow and same oil circulation. According to the method, all pipelines are laid and connected, and a closed circulation loop is formed between the pipelines and a carbon black oil storage tank; anthracene oil is conveyed to a rotary spray gun in a carbon black oil storage tank, oil sludge is loosened through rotary spraying, an oil sludge mixture is subjected to secondary separation through a circulating combination pump and then conveyed to a screen storage tank and a recovery tank, and all residual oil in the carbon black oil storage tank is transferred to the recovery tank after multiple times of circulation; blending the oil sludge mixture and anthracene oil in a blending kettle according to a certain mass ratio to obtain carbon black raw oil; carbon black raw oil is preheated, atomized and sprayed into a reaction furnace to generate carbon black flue gas, and the carbon black flue gas is treated to obtain a carbon black product. Manual cleaning is not needed, steam or chemical cleaning is prevented from affecting the oil quality, and oil sludge deposits in the storage tank can be efficiently cleaned out; the carbon black product with qualified quality is produced by blending oil sludge sediments with the same oil.