51results about How to "Increase saturation rate" patented technology

The invention discloses a hydro-cracking method for blending ethylene bottom oil, which is different from the method for processing the conventional ethylene bottom oil and comprises the following steps: blending an ethylene bottom oil light end into a conventional hydro-cracking raw material for hydro-cracking, in the presence of hydrogen, sequentially contacting the ethylene bottom oil light end with a hydro-guard catalyst, a hydro-refining catalyst, a hydro-residue carbon removing catalyst and a hydro-cracking catalyst; separating an effluent of hydro-cracking reaction to obtain light fuel oil. The method of the invention adopts a method of grading the hydrogenation catalyst, can process the ethylene bottom oil light end and produce diesel oil having a high cetane number and a low condensation point and a naphtha having high arene, and is not obviously changed in a BMCI value of tail oil and a smoke point of a jet fuel when compared with the conditions before blending the ethylene bottom oil.

A process for preparing low-sulfur low-arylhydrocarbon clean diesel oil includes such steps as hydrorefining/hydrocracking raw hydrocarbon to obtain intermediate fraction oil, catalytic stripping to separate light fraction from heavy fraction, hydrorefining the light fraction to remove residual S and impurities, and catalytic stripping of heavy fraction for removing sulfure and arylhydrocarbon to obtain final product. Its advantage is cyclic use of two reactino segments for low cost.

The invention discloses a hydrogenation refined technology of feituo synthesized oil, which comprises the following steps: preheating the feituo synthesized oil and hydrogen in the blender; loading the mixture in the pre-hydrogenation reactor to proceed olefin saturation; proceeding hydrogenation and deoxidation in the hydrogenation refined reactor with hydrogenation refined catalyst; putting the hydrogenated refined product in the cool high pressure separator to separate gas phase (hydrogen-rich gas) and liquid phase; adding the liquid product in the low pressure oil water separator to separate water and tail gas to produce the product; circulating the hydrogen-rich gas in the reactor through purifying; cutting the product into petrol fraction and diesel fraction. The invention possesses higher olefin saturated rate and hydrogenation dioxide rate, which lengthens the lifetime of catalyst.

The invention discloses a treatment method of ethylene tar. The method consists of: fractionating ethylene tar into light fraction and heavy fraction, mixing the heavy fraction with a conventional coking raw material, conducting delayed coking to obtain coker gasoline, coker diesel oil and coker gas oil, mixing the coker diesel oil with the ethylene tar light fraction, performing rectification/crystallization purification to obtain naphthalene, mixing the naphthalene removed oil, naphthalene after-cut oil, with the coker gasoline and the coker gas oil, taking the obtained mixture as a hydrotreating raw material, leaving the material to undergo a hydrofining reaction, separating gasoline fraction I, subjecting the obtained fraction heavier than gasoline to hydrocracking so as to obtain gasoline fraction II and a diesel oil product, and mixing the gasoline fraction II with the gasoline fraction I so as to obtain a final gasoline product. Directed at the characteristics of high content of aromatic hydrocarbon, colloid, carbon residue and asphaltene in ethylene tar, the method provided in the invention fractionates the ethylene tar into light fraction and heavy fraction, and adopts different processing processes, thus increasing the added value of ethylene tar. While generating the chemical raw material naphthalene, the method also improves the product quality of light fuel oil, and also enables the equipment to run smoothly for a long period.

A diesel raw material treatment method includes: cutting raw diesel into light diesel fraction and heavy diesel fraction; allowing the light diesel fraction to react in a first traction area to obtaina component rich in cycloalkane; allowing the heavy diesel fraction to react in a second reaction area; enabling obtained hydrogenation diesel fraction to enter a catalytic cracking unit for catalytic cracking reaction at the presence of a catalytic cracking catalyst; separating reaction oil gas to obtain a gasoline product rich in aromatic hydrocarbon class compounds. By the method, the raw diesel with high aromatic hydrocarbon content can be treated to produce BTX, high-octane gasoline and jet fuel components, so that the objective of converting low-quality diesel into high-added-value products is achieved.

The invention relates to a method for producing a hydrocarbon raw material rich in monocyclic aromatic hydrocarbons. According to the method, hydrogen and raw oil of diesel oil are mixed and then successively enter a first reaction zone and a second reaction zone for a contact reaction with a hydrorefining catalyst; an effluent of the second reaction zone is separated so as to obtain a liquid material flow and a gas material flow; a part of the liquid material flow is used as a circulation product and returns to the inlet of the second reaction zone; and the rest part of the liquid material flow is used as a hydrocarbon raw material and enters a catalytic cracking unit and/or hydrocracking unit. The method provided by the invention provides a high-quality raw material for producing high-octane-number gasoline or BTX component through catalytic cracking or hydrocracking, reduces hydrogen consumption in hydrogenation and is beneficial for improving the economical efficiency of hydrogenation.

The invention relates to a method for selective hydrogenation of diesel oil. The method comprises that diesel oil raw material oil and hydrogen are mixed, the mixture contacts a hydrorefining catalystin a first reaction zone, and hydrodesulfurization, hydrodenitrogenation and selective hydrodearomatization are performed under hydrogenation process conditions; the reaction effluent of the first reaction zone is separated by a separator to obtain a reaction effluent I and reaction effluent II, the reaction effluent II enters a second reaction zone and contacts a hydrorefining catalyst, and hydrodesulfurization, hydrodenitrogenation and selective hydrodearomatization are further performed under hydrogenation process conditions to obtain a reaction effluent III; after the reaction effluent Iand the reaction effluent III are mixed, and separation is performed to obtain hydrogenation oil; and based on the diesel oil raw material oil, the saturation rate of the polycyclic aromatic hydrocarbon in the hydrogenation oil is more than 95%, and the selectivity of the monocyclic aromatic hydrocarbon is more than 85%. According to the present invention, with the method, the high-quality raw material is provided for the catalytic cracking or hydrocracking production of high-octane number gasoline or BTX components while the hydrogen consumption of the hydrogenation process is reduced, and the process economy is easily improved.

The invention provides a method for modification by coupling hydrodesulfurization of FCC (Fluid Catalytic Cracking) gasoline and aromatization of liquefied petroleum gas. All-fraction FCC gasoline is sequentially subjected to selective hydrogenation and preliminary desulfurization treatment to obtain HCN (Hydrogen Cyanide) heavy-component gasoline by fractionation, and the obtained HCN heavy-component gasoline is then subjected to hydrodesulfurization treatment; and the HCN heavy-component gasoline obtained from the hydrodesulfurization treatment and liquefied petroleum gas are co-fed into a fixed bed multi-stage aromatization reactor to recover/improve the octane number of a gasoline product through the processes of polymerization, pyrolysis, aromatization, hydrogen transfer and the like of olefin. The method is applied to the production process of ultra-low sulfur clean gasoline meeting national IV gasoline standard, and especially the ultra-low sulfur clean gasoline meeting national V gasoline standard. As a gradual desulfurization process is adopted, the operation conditions of all the units are mild, the desulfurization process is coupled with a liquefied petroleum gas aromatization process, and therefore the method has the characteristics that the gasoline desulfurization efficiency is high, the octane number loss of a product does not lose and is even increased, the gasoline yield is increased and the reaction process is flexible.

The invention discloses a method for producing light fuel oil from ethylene tar. The method is as below: fractionating ethylene tar into a light fraction and a heavy fraction; mixing the heavy fraction with a conventional coking raw material, and subjecting the mixture to delayed coking to obtain coker gasoline, coker diesel and coker gas oil; mixing the coker gasoline and the coker diesel with the light fraction of the ethylene tar, and subjecting the mixture to a hydrofining reaction; distilling the product to obtain a gasoline fraction I and a fraction heavier than the gasoline; subjecting the fraction heavier than the gasoline to a hydrogenation treatment to obtain light fuel oil, and distilling to obtain a gasoline fraction II and a diesel product; and mixing the gasoline fraction I and the gasoline fraction II to obtain a final gasoline product. The method provided by the invention utilizes the characteristics of high contents of ethylene tar aromatic hydrocarbons, colloid, carbon residue and glial and asphaltene of ethylene tar to fractionate the ethylene tar into the light fraction and the heavy fraction; different processing methods are employed to improve the added value of ethylene tar, increase yield of gasoline and diesel, improve product quality of light fuel oil and realize long-period stable operation of devices.

The invention discloses a method using gas oil and residual oil to process light fuel. The gas oil, catalytic cracking heavy oil and hydrogen are mixed to enter a first hydrogenation reaction area to react, the produced oil after the reaction and residual oil raw materials are mixed to react in a second hydrogenation reaction area, the obtained product after the reaction is separated to obtain a liquid phase product and a gas phase product, wherein the gas phase product is purified and pressurized to be fed back to the first hydrogenation reaction area for cycle use, the hydrogenation residual oil in the liquid phase product enters a catalytic cracking device to react, and the catalytic cracking heavy oil in a reaction product is circulated to the first hydrogenation reaction area. The method organically combines the heavy oil hydrotreatment and the catalytic cracking device, can translate inferior gas oil and residual oil into light fuel to the maximum extent, so the liquid yield is improved.

The present invention relates to an aromatic hydrocarbon-rich wax oil hydrotreating method, which comprises that: an aromatic hydrocarbon-rich wax oil raw material oil and a gas phase material discharged from a second thermal high pressure separator are mixed, and then enter a first reactor; the first reactor reaction product enters a first thermal high pressure separator; the liquid phase material of the first thermal high pressure separator and circulation hydrogen are mixed, and enter a second reactor, and the gas phase material is cooled and then enters a cold high pressure separator; the gas phase material of the cold high pressure separator is subjected to desulfurization through a hydrogen sulfide removing tower, and the obtained gas is subjected to pressure increase through a compressor, and then is mixed with the circulation hydrogen; the second reactor reaction product enters the second thermal high pressure separator; the liquid phase material of the second thermal high pressure separator and the liquid phase product of the cold high pressure separator are subjected to mixing pressure reduction, and then enter a thermal low pressure separator; and the separated thermal low pressure separator gas phase material and the thermal low pressure separator liquid phase material are respectively processed into various products. The process reaction results show that an aromatic hydrocarbon saturation rate is substantially increased, and a cracking performance of the aromatic hydrocarbon-rich wax oil can be substantially improved.

The invention discloses a catalytic diesel oil hydro-conversion method. The catalytic diesel oil hydro-conversion method comprises the following steps: (1) mixing high aromatic hydrocarbon catalytic diesel oil with circulating hydrogen and feeding the mixture into a hydrofining reaction zone I for reaction; (2) mixing generated oil obtained in the step (1) with circulating hydrogen, and feeding the mixture into a hydrofining reaction zone II for further reaction, wherein the reaction temperature is 30-120 DEG C higher than that of the hydrofining reaction zone I, and the liquid hourly space velocity is 0.2-1.5 h<-1> lower than that of the hydrofining reaction zone I; (3) mixing the generated oil obtained in the step (2) with circulating hydrogen, feeding the mixture into a hydrocracking reaction zone for hydrocarbon hydro-conversion reaction; and (4) enabling the generated oil obtained in the step (3) to pass through a separation and fractionation system to obtain gas, light naphtha, heavy naphtha and diesel oil fractions, returning part of diesel oil to the hydrofining reaction zone II, and discharging the other part of the diesel oil from the device. By the catalytic diesel oil hydro-conversion method, the yield of aromatic hydrocarbons can be increased effectively.

The invention relates to an environment-friendly water-thermal-storage power supply energy storage system. The system comprises a hollow structure box for storing water, a heating assembly for heatingthe stored water, a heat preservation assembly for preventing the temperature of the stored water from decreasing quickly and a power generation assembly for instantaneous power generation. A sealingshell and a blocking plate wrapping the exterior of the sealing shell are arranged in the box, and a gap between the sealing shell and the blocking plate forms a water-thermal-storage cavity for storing hot water. Through cooperation of an electric heating wire, an airbag and an air pump, when the environment-friendly water-thermal-storage power supply energy storage system is used, the electricheating wire can heat a heat preservation cavity, through heat insulation of the heat preservation cavity, the heat of the heated stored water is prevented from losing quickly, the air pump is used for injecting air into the airbag, the expanded airbag can compress the gas in the heat preservation cavity, so as to increase the saturation factor of the heat in the heat preservation cavity, and theheat preservation and heat insulation efficiency of water thermal storage can be improved.

The invention relates to a cyclic heat supply and energy storage system for water thermal storage. The system comprises a hollow-structured tank used for storing water and further comprises a reactionassembly used for heating and cooling the stored water, a thermal insulation assembly used for preventing temperature of the stored water from losing too rapidly and a power generation assembly applied to instantaneous power generation; and a sealing shell and a partition surrounding the exterior of the sealing shell are arranged in the tank. According to the cyclic heat supply and energy storagesystem for water thermal storage, by cooperative use of a semiconductor chilling plate, a heat dissipating plate, a protective shell, a cold conducting block and a wrapping layer, while heating one kind of stored water, the system can cool another kind of stored water, so that hot water can be supplied to the needed environment, and cold water can also be supplied; and compared with a traditionalheat supply system for water thermal storage, the technical scheme effectively solves the problem that low-temperature liquid water can be supplied to the required environment without external equipment while the hot water is supplied.

The invention relates to the field of catalysts, and particularly discloses a gasoline selective hydrodesulfurization catalyst, a preparation method and application thereof, and a gasoline selective hydrodesulfurization method. The catalyst comprises a carrier as well as an active component A, an active component B and a phosphorus element which are loaded on the carrier, the active component A is selected from at least one of VIII group metal elements, and the active component B is selected from at least one of VIB group metal elements; and the molybdenum equilibrium adsorption capacity of the carrier is 6-12% in terms of MoO3, the specific surface area is 100-400 m < 2 >/g, and the pore volume is 0.5-1.5 cm < 3 >/g. When the hydrodesulfurization catalyst provided by the invention is used for a gasoline selective hydrodesulfurization reaction, the sulfur content in gasoline can be remarkably reduced, and the hydrodesulfurization catalyst has a relatively high hydrodesulfurization rate and a relatively low olefin hydrogenation saturation rate.