14 results about "Carbolineum" patented technology

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 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 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 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 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 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 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 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.

The application belongs to the field of photocatalysis, and particularly relates to a preparation method of ethylene tar-based composite photocatalytic spherical activated carbon loaded with TiO2. The spherical activated carbon is prepared by using high-temperature ethylene tar pitch and / or high-temperature coal tar as raw materials, adding one or more of cracked naphthalene distillate, anthracene oil, phenanthrene oil and indene oil as a blending solvent, and then performing the steps of mixing, crushing, Soxhlet extraction, mixing with polyvinyl alcohol solution, ultrasonic treatment, heating and stirring, shaping, drying, non-melting treatment, carbonization and KOH activation. The obtained spherical activated carbon is then impregnated with TiO2 to obtain the finished product. The blending solvent effectively reduces the viscosity of the system, optimizes the spheroidization and non-melting process, promotes the crosslinking reaction, and avoids sintering and excessive oxidation of the spherical body. The product has the characteristics of good sphericity, uniform particle size, high strength, large specific surface area, developed pore structure and excellent adsorption performance, and is suitable for high-end adsorption and catalysis fields.