27 results about "Coal oil" patented technology

This invention relates to the field of coal washing and beneficiation technology, and discloses a method for preparing a nano-flotation reagent for coarse coal slime. The method involves mixing sulfonated fatty acid methyl ester with kerosene and n-octanol to form an oil phase, then further mixing this with an aqueous phase containing a nonionic emulsifier, and adding functionalized nano-silica to obtain a mixed solution. This mixed solution is then sequentially treated by ultrasonic dispersion, high-speed stirring, and micro-electrolysis to generate nano / microbubbles in situ and maintain their uniform distribution, resulting in a nano-microemulsion. This invention can significantly improve the adhesion efficiency and loading capacity of coarse coal surfaces, effectively suppress tailings runoff, and improve the transportation and collection efficiency of coarse coal. It solves the problems of low clean coal yield and tailings runoff caused by the low adsorption efficiency and poor foam stability of traditional flotation reagents for coarse coal.

The invention relates to the field of coal chemical industry, and discloses a preparation method of coal-based rocket kerosene, which comprises the following steps: mixing a coal indirect liquefaction Fischer-Tropsch synthesis fraction and a coal direct liquefaction fraction, carrying out a deep hydrofining reaction, fractionating, and taking fractions with an initial boiling point of 185-205 DEG C and a final boiling point of 245-265 DEG C to obtain the coal-based rocket kerosene, wherein the mass ratio of the indirect coal liquefaction Fischer-Tropsch synthesis fraction to the direct coal liquefaction fraction is (20 to 40): (80 to 60); the initial boiling point of the indirect coal liquefaction Fischer-Tropsch synthesis fraction is 150-170 DEG C, the final boiling point of the indirect coal liquefaction Fischer-Tropsch synthesis fraction is 290-310 DEG C, the initial boiling point of the direct coal liquefaction fraction is 160-180 DEG C, and the final boiling point of the direct coal liquefaction fraction is 300-320 DEG C.

The invention provides a testing method for determining a shale oil rock core plaster ratio. The testing method comprises the following steps: acquiring a rock core for an experiment; calculating the diameter, length and gas permeability of the rock core; performing a nuclear magnetic resonance test to obtain a nuclear magnetic resonance T2 spectrum of the dry rock core, a substrate signal of the dry rock core and a nuclear magnetic resonance T2 spectrum of the saturated kerosene rock core; according to the nuclear magnetic resonance T2 spectrum of the dry rock core, the substrate signal of the dry rock core and the nuclear magnetic resonance T2 spectrum of the saturated kerosene rock core, the semaphore and the mortar ratio of fluid in the grey texture layer are calculated. Errors of experimental results caused by organic matter signals in the dry rock core are avoided, the characteristics of the dry rock core are fully utilized as the basis for dividing argillaceous pores and grey texture layers, and the experimental results are more accurate.

The invention relates to the technical field of coal chemical industry, and discloses aerospace kerosene component oil and a preparation method thereof. The method comprises the following steps: (1) heating coal-based Fischer-Tropsch wax to 60-140 DEG C, conveying the heated coal-based Fischer-Tropsch wax to a reactor loaded with an isomerization catalyst, pressurizing hydrogen to 2.5-10 MPa, injecting the pressurized hydrogen into the reactor, and carrying out hydrocracking; (2) carrying out gas-liquid separation on the hydrocracking product, conveying the separated liquid-phase component into a normal-pressure rectifying tower for normal-pressure rectification, and cutting out an aviation kerosene fraction or an aerospace kerosene fraction from the middle of the tower; (3) heavy components cut out from the bottom of the normal-pressure rectifying tower continue to enter a reduced-pressure rectifying tower to be subjected to reduced-pressure rectifying, and a lubricating oil base oil fraction is cut out from the middle of the tower. The aviation and aerospace kerosene component oil prepared by the method can well meet the requirements of cold regions and high-altitude flight on oil fluidity.

This invention discloses a low-temperature resistant composite flotation reagent for coal preparation and its preparation method, specifically relating to the field of flotation technology. The reagent is formed by emulsification of a composite collector, a composite frother, and an aqueous phase. The composite collector contains kerosene, n-dodecane, oleic acid, dimer acid, surfactant components, and low-temperature stabilizing components. The composite frother contains terpineol, pine oil, sec-octanol, and sodium α-olefin sulfonate, etc. Through compounding and synergistic effects, high-speed shear emulsification, and high-pressure homogenization, the obtained reagent exhibits good dispersibility and stability at -5 to 15°C, and can improve the flotation efficiency, clean coal yield, and combustible gas recovery rate of fine coal slime and high-ash, difficult-to-separate coal slime without heating the coal slurry.

The invention belongs to the technical field of oil and gas reservoir development physical simulation, and relates to an experimental device and method for simulating shale fan-shaped well pattern optimization in a high-temperature and high-pressure environment, and the experimental device comprises a high-temperature and high-pressure bin, a heterogeneous semi-cylinder model, a fan-shaped well pattern, a fluid injection assembly, a saturation and pressure monitoring assembly and a temperature control assembly. According to the device, coal oil is pumped into a high-temperature and high-pressure bin through a fluid injection assembly to achieve a high-pressure environment, a fan-shaped well pattern is arranged on a heterogeneous semi-cylinder model, cracks are formed in a horizontal well section, and fluid is injected through a central vertical well section; data are collected in real time through the saturation and pressure monitoring assembly, the high-temperature and high-pressure stratum environment is simulated in combination with the temperature control assembly, and therefore the fan-shaped well pattern spacing, the horizontal section length and the crack number are optimized. According to the invention, the fluid migration rule of the shale reservoir under the complex well pattern structure can be effectively simulated, and an optimization design basis is provided for shale gas development.

The invention discloses a cutin structure-based oil-rich coal oil content evaluation method, and relates to the technical field of mineral resource exploration, and the cutin structure-based oil-rich coal oil content evaluation method mainly comprises the following steps: preparing a sample to be detected into a coal polished section, and screening the coal polished section by using a microscope observation method to obtain an available sample; obtaining cutin structure parameters according to the available sample, wherein the cutin structure parameters comprise a structure integrity index, a fluorescence intensity mean value and a pore area percentage; and obtaining a sample oil content distribution interval according to the cutin structure parameters, and averaging the oil content of data points in the sample oil content distribution interval to obtain the oil content of the sample. By implementing the method for evaluating the oil content of the oil-rich coal based on the cutin structure, provided by the invention, the oil content of the oil-rich coal can be quickly evaluated with low cost, no damage and no pollution.

The present application relates to a kind of lignite oil coupling large coal-fired boiler power generation process system, belong to coal energy technical field.The present application is to solve the problem of low overall economic benefit in the process of lignite dry distillation for increasing the yield of coal gas and tar, the energy consumption of required pressurization and heating makes.The present application includes lignite oil sub-system and lignite boiler power generation subsystem;Lignite oil sub-system uses lignite as raw material to prepare kerosene and coal gas, lignite boiler power generation subsystem uses lignite, semi-coke generated by lignite oil sub-system and limestone as raw material for combustion power generation;Lignite oil sub-system and lignite boiler power generation subsystem produce coupling effect through double-helix pyrolysis furnace, screw feeder, back material valve, combustion chamber, cyclone separator and boiler back material pipe, lignite oil sub-system provides semi-coke for lignite boiler power generation subsystem, and lignite boiler power generation subsystem provides high-temperature circulating ash for lignite oil sub-system.The present application is mainly used for preparing kerosene, coal gas and power generation.

The invention provides a fluidized bed coal tar hydrotreating method, which comprises the following steps: mixing a coal tar raw material with hydrogen, sequentially passing through a first fluidized bed hydrogenation reaction zone and a second fluidized bed hydrogenation reaction zone, filling a hydrogenation catalyst A in the first fluidized bed hydrogenation reaction zone, filling a hydrogenation catalyst B in the second fluidized bed hydrogenation reaction zone, separating the reaction effluent to obtain naphtha, diesel oil and aviation kerosene; wherein the bulk carbon content of the hydrogenation catalyst A is 5-20wt% higher than that of the hydrogenation catalyst B; the average pore size of the hydrogenation catalyst A is 5-15nm higher than that of the hydrogenation catalyst B; the total acid content of the hydrogenation catalyst A is 0.10-0.30 mmol / g lower than the total acid content of the hydrogenation catalyst B. The method can reduce the crushing of the catalyst and ensure the stable long-period operation of the device, and is especially suitable for the hydrotreating process of coal tar with high oxygen content; according to the method, hydrogenation reaction of the coal tar under the condition of high conversion rate can be realized, and meanwhile, the product quality and yield are improved.

The invention belongs to the technical field of oil and gas field development, and discloses a nuclear magnetic resonance-based shale oil energy supplement new mode indoor experiment evaluation method, which comprises the following steps: S1, rock sample pretreatment; s2, vacuumizing and pressurizing the rock sample to saturate heavy water; s3, displacement of saturated heavy water by kerosene; s4, displacing kerosene with in-situ crude oil; s5, simulating depletion type development, and calculating the crude oil recovery rate of the depletion type development rock sample; s6, a chemical agent is injected for temporary plugging; and S7, simulating CO2 injection and nano-agent energy supplement development under different injection pressures and different throughput rounds, and calculating the crude oil recovery rate of the rock sample after energy supplement under different injection pressures and different throughput rounds. According to the indoor evaluation experiment method for the novel energy supplement development mode under chemical agent plugging, nano agent flooding and CO2 huff and puff, the problems of CO2 injection and liquid channeling and the problem that the oil yield is rapidly decreased cycle by cycle in the single CO2 injection huff and puff or gas-water alternate injection stage can be solved, mine field practice is guided, and efficient shale oil development is achieved.

The invention relates to the technical field of oil exploration, and discloses an inter-coal oil-bearing reservoir prediction method and device, a medium and computing equipment. The method comprises the steps that single well curve characteristic analysis is carried out, qualitative analysis is carried out on curves of sound waves, resistivity, porosity and natural potential, and the characteristics of the oil-bearing reservoir are determined; carrying out quantitative analysis on the density and the gamma curve, and carrying out curve fitting; the fitted curve is optimized, and the influence of the coal seam is eliminated; establishing a favorable reservoir indication curve and a sound wave time difference cross plot, carrying out quantitative analysis on the oil-bearing reservoir, and dividing the interval of the oil-bearing reservoir to distinguish the oil-bearing reservoir; well-seismic calibration is carried out, and a coal seam oil-bearing reservoir removal initial model is established based on the favorable reservoir indication curve; and based on the coal seam-removed oil-bearing reservoir initial model, carrying out oil-bearing reservoir prediction, and drawing an oil-bearing reservoir planar graph and an oil-bearing reservoir profile graph. According to the method, the influence of the coal seam is eliminated, the applicability to the oil-containing reservoir between the coal is improved, and the distribution condition of the oil-containing reservoir is conveniently and accurately predicted.

The present application relates to the technical fields of detecting coal tar, and disclose a device and method for rapidly detecting naphthalene content in coal tar, which comprises a distillation flask, a fractional column, a fractional head, a condenser, a receiver and a base, a support plate is vertically fixed on the top of the base, a fixed rod is fixed on one side of the support plate, the fractional column is fixedly installed on the end of the fixed rod, the distillation flask is arranged at the lower end of the fractional column, the fractional head is arranged at the upper end of the fractional column, the condenser is fixedly arranged on the downward inclined end of the fractional head, a support table is fixed on the other side of the support plate, a weighing device is fixed on the top of the support table, and the receiver is placed on the top of the weighing device. The device and method for rapidly detecting naphthalene content in coal tar adopts the heating mode of a bulb, and the bulb can rotate around the distillation flask, so that the coal tar in the distillation flask is slowly heated, thereby improving the separation quality of the three mixed naphthalene oil, and in addition, the separated three mixed naphthalene oil can be directly weighed, thereby improving the efficiency of content detection.

The invention relates to an automatic vacuumizing system and method for a test bench pump front pipeline, and is mainly used for solving the technical problems that in the prior art, consumed time is long, stability is poor, the automatic control capability is lacked, the vacuumizing speed and program cannot be automatically adjusted according to real-time feedback, and the fluctuation of the vacuum degree is large. The invention relates to an automatic vacuum-pumping system for a test bench pump front pipeline. The automatic vacuum-pumping system comprises a vacuum-pumping assembly, a vacuum overflowing assembly and an observation assembly. The coal oil pump front pipe is connected with an air inlet of a vacuum overflowing tank in the vacuum overflowing assembly through the observation assembly, and an air extraction opening of the vacuum overflowing tank is connected with the vacuumizing assembly. According to the invention, the capacity of the pump front pipeline vacuumizing system in the liquid oxygen kerosene engine test process is optimized, the high-quality vacuum environment of the pump front pipeline is ensured through automatic control, and reliable ignition conditions are provided for the liquid oxygen kerosene engine ground test.

The invention discloses a pulverized coal pyrolysis device and method. The device comprises a kerosene slurry feeding unit, a preheating unit, a pyrolysis-coke generation unit and an oil / gas collecting unit, a raw material outlet of the kerosene slurry feeding unit is connected with an inlet of the preheating unit, an outlet of the preheating unit is connected with the pyrolysis-coke generation unit, a volatile component outlet of the pyrolysis-coke generation unit is connected with the oil / gas collecting unit, and a pyrolysis tar outlet of the oil / gas collecting unit is connected with the kerosene slurry feeding unit; according to the pulverized coal pyrolysis method disclosed by the invention, pyrolysis'oil-dust 'separation is associated with materials in the process of the method, and coal-oil slurry feeding avoids the'oil-dust' separation problem from the source; meanwhile, escape of volatile components in the pyrolysis process is enhanced, and the yield and quality of pyrolysis tar are improved; the pyrolysis method is simple, the catalyst is wide in adaptation range, and large-scale production is easy.

The present invention relates to the field of direct coal liquefaction, and discloses a catalytic coal-oil slurry and its preparation method, method of direct coal liquefaction, and use. The method includes mixing an oil-soluble molybdenum source, a solvent, pulverized coal, and an optional sulfur source to obtain the catalytic coal-oil slurry. When the catalytic coal-oil slurry is used for direct coal liquefaction, it can achieve a higher oil yield and reduce the production cost.

The invention relates to the technical field of mineral processing, in particular to a method for flotation of clean coal from coal gangue. Mixing the pretreated coal gangue with water to obtain ore pulp; and a trapping agent and a foaming agent are sequentially added into the ore pulp for flotation separation, and clean coal and tailings are obtained. When the ore pulp concentration is 100g / L, the kerosene dosage is 900g / t coal gangue, and the sec-octanol dosage is 700g / t coal gangue, the clean coal yield reaches 10.23%. According to the method, by setting different agent proportions and process parameters, the recovery efficiency of clean coal in the coal gangue is improved, coal gangue emission is reduced, solid waste resource utilization is achieved, economic and social benefits are both achieved, and the method is suitable for industrial application in the field of coal washing and dressing.

The present application provides a coal-based jet fuel and a preparation method thereof. The coal-based jet fuel comprises a mixed fraction and an additive, the mixed fraction comprising a coal direct liquefaction kerosene fraction and a coal indirect liquefaction kerosene fraction, the coal direct liquefaction kerosene fraction having a distillation range of 120-300 DEG C, and the coal indirect liquefaction kerosene fraction having a distillation range of 160-280 DEG C. The present application utilizes the characteristics of the coal direct liquefaction kerosene fraction with a specific distillation range and the coal indirect liquefaction kerosene fraction with a specific distillation range, and uses the additive to synergize with them, to obtain a coal-based jet fuel. The coal direct liquefaction kerosene fraction and the coal indirect liquefaction kerosene fraction are widely available and easy to obtain. The coal-based jet fuel has low preparation cost and high performance, meets the index requirements of jet fuel, and moreover, requires less devices and equipment, has low investment cost, can greatly reduce production cost, and has high market competitiveness.

The utility model discloses a zero-carbon-emission low-rank-coal low-cost methanol production system. The zero-carbon-emission low-rank-coal low-cost methanol production system comprises a gasified coke generation unit for generating gasified coke, flue gas and raw gas, a raw gas treatment unit for converting the raw gas into coking coal oil, hydrogen and LNG (Liquefied Natural Gas), a water electrolysis device for generating hydrogen and oxygen, a gasification device for converting the gasified coke, steam and oxygen into water gas, and a low-carbon-emission low-rank-coal low-cost methanol production unit for converting the gasified coke, the flue gas and the raw gas into the water gas. The system comprises a water gas conversion device for converting water gas into effective gas, a first CO2 capture device for capturing CO2 in the effective gas, a first methanol synthesis device for converting CO and hydrogen into methanol, an environment-friendly treatment device for treating flue gas, a second CO2 capture device for capturing CO2 and a CO2 storage device for storing CO2, the second methanol synthesis device and the third methanol synthesis device are used for synthesizing CO2 and hydrogen into methanol. According to the zero-carbon-emission low-rank-coal low-cost methanol production system, low-rank coal can be used as a raw material, so that the cost is low, and zero emission is realized in the whole process.

The utility model relates to the technical field of coal oil, disclose a kind of preparation system of coal oil, for solving the problem that vacuum tower bottom oil high temperature, high viscosity, high solid content is difficult to purify. The system is by adding solvent, after being fully mixed by dilution mixer again, reduce tower bottom oil viscosity and dissolve part asphaltene etc., using the high-precision filter with metal sintering membrane filter element is carried out precision filtration, and equipped with backwash system and slag receiving tank realize continuous slagging and slag collection, can effectively remove solid impurities, obtain clean oil product, mainly used in the purification treatment of vacuum tower bottom oil in coal direct liquefaction process, provide high-end raw material for downstream.

The invention relates to the technical field of carbon accounting, in particular to a regional carbon emission real-time monitoring analysis processing method and system, and the method comprises the following steps: distributing a unique identifier for each region and economic industry classification combination according to a regional industry energy statistical report and a power consumption data record, and unifying the multiple data record timestamps to a preset time frequency. According to the method, the energy-electricity model is constructed, the stable internal correlation between power consumption and coal, oil and gas consumption in a specific industry in a specific area is quantified by solving the slope of the linear relation, fossil energy activity data which is difficult to obtain at high frequency in traditional carbon accounting is replaced by using power consumption data provided by a power grid system in real time, and the calculation efficiency is improved. Through the energy carbon model and the electric carbon model, direct emission generated by fossil fuel combustion of each department can be calculated in real time, indirect emission implied by net purchase of electric power can also be calculated, and the problems that an actual measurement method is high in cost and narrow in coverage are solved.

The application belongs to the technical field of spent fuel reprocessing, and particularly relates to a plutonium reduction back extraction method. The method comprises the following steps: controlling the initial concentration of plutonium in 2AF according to the flow ratio and the concentration multiple of plutonium; controlling the liquid flow rate to be 160-200 L / h when 2AF liquid passes through an oxidation column; controlling the liquid flow rate to be 160-200 L / h when 2AF liquid passes through a degassing column; and completely removing the bottom liquid in the 2AF feeding tank every two or three batches, and completely removing the waste coal oil in the oil removal tank by one-time passing through a pulse extraction column. The method can reduce the content of nitrous acid in the plutonium second-cycle organic phase, avoid the accumulation of nitrous acid in the 2AF liquid and the organic phase, reduce the thermal effect of plutonium accumulation, and is suitable for long-term continuous operation of the system. Through repeated experiments, the system can be stably operated, and the column temperature and the hydrodynamic parameters of the 2BX column are stable.

This application discloses a medium- and low-temperature coal tar processing and conversion process, comprising: feeding medium- and low-temperature coal tar feedstock into a delayed coking unit to obtain needle coke and delayed coking product oil; the delayed coking product oil entering a fractionation tower to separate phenolic oil; the phenolic oil undergoing dephenolization to obtain dephenolized oil; the dephenolized oil entering a hydrorefining section to obtain hydrorefined product oil; the hydrorefined product oil entering a fractionation tower to cut gasoline, diesel, and kerosene fractions; the kerosene fraction entering a hydroisomerization section to obtain hydroisomerized product oil; the hydroisomerized product oil entering a hydroreforming section to obtain hydroreformed product oil; and the hydroreformed product oil entering a fractionation tower to obtain aviation kerosene blank oil. Through the comprehensive utilization of coal tar through deep processing, aviation kerosene and high-value chemicals such as gasoline, diesel, phenolic chemicals, and needle coke are produced, improving the utilization rate of coal tar resources. Simultaneously, the deep processing of coal tar extends into the field of high-value materials, fully realizing the sustainable development of coal tar processing.

The utility model relates to the technical field of heating furnaces, in particular to a novel heating furnace which comprises a fuel oil supply part, a combustion part and a hot air gathering part, fuel oil in the fuel oil supply part is conveyed to the combustion part through a fuel oil conveying core to be combusted, and the hot air gathering part is arranged above the combustion part and used for gathering hot air generated after combustion of the combustion part. The hot air gathering part comprises a bottom plate, a gathering front shell and a gathering rear shell, the gathering front shell and the gathering rear shell are connected in a hinged mode to form an annular cavity, and a plurality of air holes which are evenly distributed along the end face and used in cooperation with the annular cavity are formed in the bottom plate. The kerosene warmer effectively solves the problem that an existing kerosene warmer is slow in temperature rise. According to the utility model, the airflow gathering shell which is arranged in the annular cavity and has the concave surface facing the fuel oil supply part can be used for further gathering airflow passing through the air holes, and the airflow gathering shell is positioned below the fuel oil conveying core, so that external air enters the annular cavity more quickly, and the purpose that heat generated by combustion is sprayed out more quickly is achieved.

The invention relates to the technical field of boiler coal combustors, and discloses an ammonia-doped combustor for combusting coal fuel and liquid ammonia fuel, which comprises a fuel oil assembly, a primary air assembly, a secondary air assembly and a tertiary air assembly, the fuel oil assembly comprises an inner cylinder nozzle; the primary air assembly comprises an outer cylindrical nozzle, and the inner cylindrical nozzle is arranged at the central axis of the outer cylindrical nozzle; the secondary air assembly comprises a secondary air sleeve, a liquid ammonia nozzle is introduced into an outlet of a secondary air channel, and liquid ammonia fuel enters the boiler through the liquid ammonia nozzle; the tertiary air assembly comprises a tertiary air sleeve, and a vortex device for providing vortex flow for tertiary air is arranged in a tertiary air channel. The problems that in the prior art, sufficient heat value of ammonia gas fuel cannot be guaranteed, and a coal fuel channel is single are solved, and efficient combined combustion of the coal fuel and the liquid ammonia fuel can be achieved by arranging the channel special for transporting kerosene, pulverized coal and liquid ammonia.

The invention relates to a method and system for producing food-grade white oil and industrial white oil by using coal tar hydrogenation tail oil, and the method comprises the following steps: S1, enabling the coal tar hydrogenation tail oil to enter a solvent refining unit for solvent refining treatment to obtain raffinate oil and extract oil; s2, H2 and the raffinate oil enter a hydro-upgrading unit to be in contact with a hydro-upgrading catalyst, hydro-upgrading reaction is carried out, a hydro-upgrading reaction product is obtained, and the hydro-upgrading catalyst comprises a hydrotreating catalyst, a hydrodewaxing catalyst and a hydrofining catalyst; s3, enabling the hydro-upgrading reaction product to enter a steam stripping unit, and performing high-pressure steam stripping to obtain a gas-phase component and a liquid-phase component; s4, enabling the liquid-phase component to enter a post-hydrogenation refining unit to be in contact with a post-hydrogenation refining catalyst, and carrying out post-hydrogenation refining reaction to obtain a post-hydrogenation refining product; s5, allowing the hydrogenated refined product to enter a separation unit for separation treatment to obtain aviation kerosene, food-grade white oil and industrial white oil.

The application belongs to the technical field of carbon molecular sieve and specifically provides a method for preparing CMS carbon molecular sieve from waste flower clay and application thereof. The method comprises the following steps: 1) crushing, grinding and drying phenolic resin flower clay to obtain a precursor; 2) uniformly mixing raw materials including the precursor, starch, coal tar, pitch and water, and extruding to obtain carbonized material; and 3) performing carbonization and deposition treatment on the carbonized material. The molecular sieve prepared by the method has the advantages of high strength, good selectivity and high separation efficiency.

The invention belongs to the technical field of carbon molecular sieves, and particularly provides a method for preparing a CMS carbon molecular sieve from flower mud recovery waste and application. Comprising 1) taking phenolic resin flower mud, crushing, grinding and drying the phenolic resin flower mud to prepare a precursor material, 2) uniformly mixing the precursor material, starch, coking coal oil, asphalt and water and carrying out extrusion molding to prepare a carbonized material, and 3) taking the carbonized material and carrying out carbonization and deposition treatment.The prepared molecular sieve has the advantages of high strength, good selectivity and high separation efficiency.