15 results about "Tar" patented technology

This invention discloses an integrated device for coal tar separation and recovery and electrostatic precipitator in coal gangue decarbonization tail gas, belonging to the field of flue gas treatment technology. It includes a dust collector, a coal tar separation and collection hopper, a radial flow rotary disc tar collector, and an electrostatic precipitator unit. The radial flow rotary disc tar collector is installed in the coal tar separation and collection hopper and includes an inner air-flowing central pipe, an outer pipe, multiple hollow collection discs, and a rotation drive assembly. A jacket is formed between the inner air-flowing central pipe and the outer pipe for introducing a heat exchange medium. The inner cavity of the hollow collection discs communicates with the jacket. A radial exhaust channel for tail gas is provided on the inner air-flowing central pipe. During operation, the heat exchange medium is switched to keep the disc surface at a low temperature during the condensation and collection stage, where tar in the tail gas condenses and adheres to the disc surface. During the desorption and regeneration stage, the heat exchange medium is switched to a high temperature and rotates at high speed, using centrifugal force to throw the tar out and collect it. This achieves anhydrous separation and resource recovery of tar, avoiding tar contamination of the electrostatic precipitator unit.

This invention discloses a process for controlling the water content of tar before the dehydration distillation step in a tar distillation unit, comprising the following steps: S1, raw tar is pumped from a large tar tank to a working tar tank via a tar delivery pipeline. The water content of the raw tar is detected by a moisture meter on the tar delivery pipeline, and based on this, it is determined whether the raw tar should be returned to the tar centrifugal dehydration and slag removal system; S2, the raw tar in the working tar tank is pumped to the tar distillation unit for processing via the working tank outlet delivery pipeline. The water content of the raw tar is detected by a moisture meter on the working tank outlet delivery pipeline, and it is determined whether the raw tar in the working tar tank should be drained. This invention can further reduce the water content of tar before the dehydration distillation step in the tar distillation unit, thereby reducing the production load of the tar dehydration distillation step.

The application discloses a method for preparing coal-tar pitch-based porous carbon by using double-salt compounds (K2CO3 and Na2CO3) and potassium hydroxide and application thereof. The pore diameter of the material activated by KOH is adjusted by adding K2CO3 and Na2CO3, and the sputtering and eruption of the sample in the activation process is avoided, and the equipment is not corroded. The application comprises the following steps: after coal tar that is crushed is uniformly mixed with an activating agent, simple one-step activation is carried out at high temperature, wherein the specific surface area of the porous carbon material can reach about 2000 m 2 / g, and the pore volume is between 0.98 and 1.29 cm 3 / g. When the porous carbon material is used as an electrode material of a super capacitor, the material shows high specific capacitance and good rate performance. The application provides a preparation method of high-specific-surface-area porous carbon, and the reaction process is mild.

The utility model relates to a laboratory coal tar pitch melting device belongs to coal tar pitch melting equipment technical field, including experiment table, support frame, melting bucket, apron, exhaust pipe, discharge gate, heating mechanism and stirring mechanism, experiment table upper surface is equipped with melting bucket and support frame, and melting bucket is located below support frame, and melting bucket is equipped with the apron of adaptation, and apron is liftable and is connected in support frame lower extreme through hydraulic cylinder, and apron lower surface still is equipped with stirring mechanism and carries out the stirring to coal tar pitch in melting bucket, and the upper surface of apron is equipped with exhaust pipe, and melting bucket is built -in heating mechanism and carries out heating melting to coal tar pitch in melting bucket, and melting bucket lower extreme's one side fixedly connected with discharge gate carries out the discharge of material, the device simple structure, convenient to use, can effectively improve the evenness of heating when melting, accelerates melting.

The present application belongs to the technical field of coking by-product resource treatment, and particularly relates to a tar-containing sulfur purification method and system based on superheated steam step-by-step heating. Hot steam is used to purify coking black sulfur, and the coking sulfur raw material treatment process is sequentially divided into a low-temperature melting stage, a heat tracing and preheating stage, a medium-temperature detoxification stage, a high-temperature distillation stage, and a condensation forming stage. A steam loop is used for high-temperature distillation gasification of sulfur, medium-temperature detoxification, heat tracing and low-temperature melting of the sulfur in sequence by using 560 DEG C-590 DEG C high-temperature superheated steam. After low-temperature melting, the steam is converted into condensed water, and then is returned to the condensation forming stage to cool the high-temperature sulfur steam, so that the steam heat is gradientally recycled in each stage.

This invention relates to a concentric single-hole drilling system and method for in-situ pyrolysis oil extraction from oil-rich coal. The system comprises three well sections from top to bottom, with the third section being a bare well located in the coal seam heating zone. A heater is placed on the surface to heat and pyrolyze the coal seam, generating oil and gas. A pressurization device and a heat transfer medium input device installed on the surface introduce the heat transfer medium into the well via an external pipe. A pressure reducing device, heat exchanger, oil-gas separation device, tar storage device, and coal gas storage device are also installed on the surface, enabling the recovery and utilization of heat energy and the separation and storage of oil and gas. This invention reduces the damage to the formation caused by excessive drilling, leading to aquifer water loss and adverse effects on in-situ pyrolysis; it also reduces construction difficulty and improves the oil and gas recovery rate and the utilization rate of residual heat energy.

This application relates to the field of vacuum paddle dryer technology and discloses a vacuum paddle dryer for treating tar residue and its processing technology. The dryer includes a shell, a feed inlet on one side of the top of the shell, a main shaft rotatably mounted on the inner side of the shell, and a feed pipe fixedly connected to one side of the bottom of the shell. Liquid is filled into the feed pipe through a conduit. This invention uses industrial circulating water to separate the shell cavity and the placement cavity, thus maintaining a sealed state during the drying process of tar residue containing harmful gases. When the material is fed, an adjusting mechanism drives a rotating plate to open the feed channel between the baffle plate and the shell. After ensuring sufficient drying time, the material falls into the water for cooling, thus preventing the high-temperature material from directly contacting the air and generating harmful gases and dust, polluting the working environment. Simultaneously, the cooling process improves material processing efficiency and drying quality.

This invention discloses a co-firing biomass gas burner and method, belonging to the technical field of combustion equipment. The burner includes a central duct, an inner secondary duct, and an outer secondary duct, coaxially arranged from the inside out. A pulverized coal concentrator is installed inside the central duct, and its outlet end has a slitted blunt body structure with a central through-hole and an axial slit, used to form a graded pulverized coal gas flow. The biomass gas pipeline is equipped with a mechanical tar reduction structure based on temperature detection and flow rate regulation. Through the cooperation of the pulverized coal concentrator, the slitted blunt body, the secondary air swirl blades, and the guide plate, a series of primary and secondary recirculation zones are formed within the burner, achieving zoned mixing and graded combustion of pulverized coal and biomass gas. This invention solves the technical problems of incomplete co-firing, tar blockage, and low-NOx combustion in existing technologies, improving combustion efficiency, stable combustion performance, and reducing pollutant emissions.

The application discloses a tar distillation process for improving oil quality, and relates to the technical field of deep processing of coal tar. The process is a coal tar atmospheric and vacuum distillation process for full distillation of unwashed three-mixed oil on the top of a tar distillation column. The core of the process is that, without changing the main structure of the original distillation equipment, four core process parameters, including backflow, vacuum degree at the top of the column, temperature at the bottom of the column and temperature at the top of the column, are simultaneously and cooperatively controlled in the vacuum distillation process of the tar distillation column, and the distillation quality control thresholds of unwashed three-mixed oil and carbon black oil are matched and set. The application solves the problems of wide process parameter control, low and unstable product quality of the existing tar distillation process, and can make the downstream washed oil product reach the first-grade product requirement in the GB / T24217-2025 standard, while not affecting the raw material adaptability of carbon black oil to the downstream modified pitch device. The application has the advantages of low modification cost, easy industrialization, stable product quality and remarkable economic benefits.

This application relates to the field of crude syngas treatment technology in coal gasification, and discloses a fixed-bed coal gasification crude syngas tar separation system and method. The separation system includes an oil washing tower and a lock hopper. A circulating oil path connects the rich oil outlet and the lean oil inlet of the oil washing tower. The circulating wash oil from the lean oil inlet washes and heats the crude syngas, so that tar, dust, and phenolic amine impurities are transferred to the oil phase. A circulating water path connects the circulating water outlet and the circulating water inlet of the lock hopper. Dust can settle and separate from the oil in the oil washing tower and be transferred to the aqueous phase. This system can dissolve tar in the circulating wash oil to avoid tar and dust entanglement, prevent the formation of an emulsion suspension system in the oil section, achieve separation of dust from crude syngas and circulating wash oil in the oil washing tower, and avoid the production of large amounts of black water. The system has a low water production rate, which can greatly reduce the tar and dust content in the liquid phase entering the downstream flash evaporation system, thereby avoiding sedimentation and scaling in the high flash tank.

The present application relates to a device and method for determining tar condensation temperature in biomass synthesis gas, belonging to the technical field of biomass gasification methanol production. The device comprises a tar supply unit, an inert gas supply unit, a high-temperature heating and mixing unit, a visual condensation determination unit and a tail gas treatment unit which are in communication with each other. The tar supply unit is used to heat the tar sample to a molten state; the inert gas supply unit provides inert gas for simulating synthesis gas. The high-temperature heating and mixing unit heats and mixes the tar and inert gas to form a mixed gas. The visual condensation determination unit is used to control the cooling of the mixed gas and observe the tar condensation process to determine the condensation temperature of the tar. The tail gas treatment unit is used to purify and absorb the condensed mixed gas and discharge it. The device realizes the real simulation of the tar condensation behavior in the biomass crude synthesis gas, and the tar condensation process can be observed quickly and intuitively to accurately obtain the condensation temperature of the tar.

This invention belongs to the field of coal chemical technology and discloses a method for preparing spinnable mesophase pitch using a dual thermal polycondensation-solvent extraction process based on pyrolytic pitch evaluation. Coal tar pitch and other raw materials are subjected to solvent extraction to remove primary insolubles and ash, yielding a soluble solution. This solution is then subjected to atmospheric distillation to remove the solvent, resulting in refined coal tar pitch. The refined coal tar pitch is then subjected to heat treatment in a high-temperature, high-pressure reactor to obtain pyrolytic pitch. After property analysis of the pyrolytic pitch, a second thermal polycondensation is adaptively set and adjusted. The pyrolytic pitch is then separated by solvent extraction to obtain insolubles. These insolubles are then vacuum dried and subjected to a second heat treatment to obtain spinnable mesophase pitch. The dual thermal polycondensation-solvent extraction process based on pyrolytic pitch evaluation employed in this invention can significantly improve the anisotropy content of the mesophase pitch and result in a wide-area streamlined optical texture.

The utility model discloses a kind of RTO tar blockage prevention devices, including lower layer box, it is characterized in that, the middle lower part in middle layer box is fixedly provided with heat accumulator support frame, heat accumulator is set on the heat accumulator support frame, adsorption layer support net is fixedly arranged in the inside section of the middle layer box, adsorption layer is laid on the saddle ring support net, the utility model relates to heat accumulating type oxidation furnace tar blockage prevention equipment technical field, specifically, it relates to a kind of RTO tar blockage prevention devices, adsorption layer (formed by saddle ring laying) being arranged in middle layer box can intercept tar particle before waste gas enters heat accumulator, avoid tar condensation deposition on the surface of heat accumulator from source, effectively solve the problem of heat accumulator blockage, maintain the heat exchange efficiency and processing effect of RTO, prolong the service life of heat accumulator.