Integration of resid hydrocracking and hydrocleaning
FIELD: oil and gas industry.
SUBSTANCE: one of the process variants includes the following steps: contacting the hydrocarbon residue and hydrogen fraction with the first hydroconversion catalyst in the first fluidized bed hydroconversion reactor system; extracting the first outlet stream from the first fluidized bed hydroconversion reactor system; contacting of the first outlet stream and hydrogen with the second hydroconversion catalyst in the second hydroconversion reactor system; extraction of the second outlet stream from the second hydroconversion reactor system; contacting of the second outlet stream and hydrogen with the third hydroconversion catalyst in the second fluidized bed hydroconversion system; extracting the third outlet stream from the second fluidized bed hydroconversion reactor system; fractionating of the third outlet stream from the second fluidized bed hydroconversion reactor system to recover one or more hydrocarbon fractions, including the vacuum fraction of the hydrocarbon residue.
EFFECT: invention makes it possible to achieve high hydrocarbon processing using a simplified technology.
20 cl, dwg 4
SUBSTANCE: method includes: feeding a stream of hydrocarbon feed stock into a hydrogenation/dehydrogenation reactor system to generate a first stream; feeding the first stream into a fractionation apparatus to generate an upper stream containing C7 and lighter paraffins and a lower stream containing heavier paraffins; and feeding said upper stream into a high-temperature reforming reactor system to generate a reforming product stream, where the high-temperature reforming reactor system operates at temperature in the range of 540°C to 580°C.
EFFECT: use of the method reduces power requirements when producing aromatic compounds.
10 cl, 1 dwg
SUBSTANCE: separation of products of a hydrocracking reaction is realised in three stages, at the first stage a low-pressure gas, liquefied hydrocarbon gases, a light gasoline fraction and a weighted product of hydrocracking are obtained, with the light gasoline fraction being obtained in the first atmospheric column as a side run, at the second stage obtained are: heavy gasoline, kerosene, Diesel fuel of at least two types, including winter, summer and arctic ones and a non-converted residue, in which the content of light fractions, boiling away to 360°C, do not exceed 3 wt %, at the third stage obtained are: light stable gasoline, a purified stabilisation gas, applied as a raw material for the Clause process for obtaining element sulphur. The invention also deals with a hydrocracking installation with obtaining motor fuels.
EFFECT: extension of the product assortment.
22 cl, 1 dwg, 1 tbl, 1 ex
SUBSTANCE: method involves a step (a) for providing an oxygenate-containing stream; (b) mixing said stream with a recirculating stream to form a stream which is fed to obtain gasoline; (c) bringing the stream which is fed into the reactor for producing gasoline into contact with one or more gasoline synthesis catalysts in order to obtain an effluent containing hydrocarbons with higher molecular weight, which boil in the gasoline range; (d) removing the effluent from step (c); and (e) separating a portion of the effluent to form a recirculating stream, wherein, optionally, water content is reduced or said stream is enriched with hydrogen, compressed and returned to step (b), where the oxygenate-containing stream further contains carbon oxide, and the recirculating stream at step (e) is subjected to a water-gas conversion reaction.
EFFECT: use of the present invention enables to reduce energy loss and reduce the size of equipment associated with recirculation operations of the gasoline synthesis reactor.
6 cl, 4 dwg, 4 ex, 3 tbl
FIELD: oil and gas industry.
SUBSTANCE: invention refers to the method involving synthesis gas obtaining stage at which raw materials of gaseous carbons contained in natural gas are subject to reforming in presence of catalyst with steam and/or carbon dioxide so that synthesis gas is obtained; stage for obtaining liquid hydrocarbons according to Fischer-Tropsch, at which synthesis gas is subject to effect in conditions of Fischer-Tropsch reaction in presence of catalyst so that Fischer-Tropsch reaction product is obtained; then, Fischer-Tropsch reaction product is divided into liquid hydrocarbons according to Fischer-Tropsch and gaseous products, and upgrading stage at which the hydrocarbon product according to Fischer-Tropsch is subject to hydraulic cleaning in presence of catalyst so that hydraulically cleaned product is obtained; then, hydraulically cleaned product is refined so that light hydrocarbons and kerosene and gas oil end products are obtained where at least some part of light hydrocarbons separated by means of refining at the above upgrading stage is recycled to the above stage for obtaining synthesis gas as part of raw materials of gaseous carbons.
EFFECT: light hydrocarbons representing a byproduct having low added value can be reused, and the basic unit of raw materials can be improved.
6 cl, 4 ex, 1 dwg
FIELD: gas and oil production.
SUBSTANCE: method of stabilisation of hydrocarbon material desulphurisation hydrogenate involves sequential rectification of low-boiling fractions at high pressure in the main stabilising rectifying column, and the residue obtained is processed in vacuum distillation column, obtained distillate of stable hydrogenate from vacuum column is suctioned by fluid and gas jet aggregate with source hydrogenate used as work medium, then a mix of distillate and source hydrogenate obtained from jet aggregate is heated and fed to the main stabilising column.
EFFECT: increased efficiency of hydrogenate stabilisation process due to reduced diameter of main stabilising rectification column and elimination of heat consumption for heating of hydrogen-containing gas required for ejector operation.
1 cl, 1 tbl, 2 ex
FIELD: petrochemical processes.
SUBSTANCE: C6-C8-hydrocarbon fraction is obtained through rectification combined with two-step hydrogenation and then subjected to hydrodealkylation. Products are separated into gaseous and liquid fractions. Process of invention is characterized by that at least part of hydrogenated C6-C8-hydrocarbon fraction is subjected to additional rectification, wherein product containing 30 to 95% benzene based on content thereof in C6-C8-hydrocarbon fraction is withdrawn from the top of additional rectification column or as side product, while bottom product of the column containing the rest of benzene and higher-boiling aromatic or nonaromatic C7-C8-hydrocarbons is directed to hydrodealkylation. Distillate product containing 30 to 95% benzene is further subjected to extractive rectification with selective solvent to recover from fraction of nonaromatic hydrocarbons as distillate of extractive rectification column, whereas loaded selective solvent from this column undergoes desorption to recover benzene.
EFFECT: enhanced benzene production efficiency from various-origin benzene-containing hydrocarbon blends.
6 cl, 4 dwg, 2 tbl, 8 ex
FIELD: power industry.
SUBSTANCE: paraffin hydrocracking method is described, in which the reactor with fixed layer is provided with catalytic reaction zone in which the first catalytic layer contains the first amorphous solid acid, the second catalytic layer contains zeolite and the third catalytic layer contains the second amorphous solid acid, which are located in such an order; paraffin has to flow in direction from the first catalytic layer to the third catalytic layer in zone of catalytic reaction in presence of hydrogen.
EFFECT: high output of average distillate and basic component of lubrication oil and obtaining gasoil fraction having excellent low-temperature fluidity.
6 cl, 1 tbl, 5 ex, 1 dwg
FIELD: power industry.
SUBSTANCE: versions of wax hydrocracking method are described. As per invention, the first layer of catalyst of hydrocracking is upstream located in reactor with fixed layer, and the second catalyst layer of hydrocracking is downstream located in reactor with fixed layer respectively so that the condition corresponding to the following equation (1) can be met; hydrogen and wax are passed through the first hydrocracking catalyst layer, and hydrogen is again added to decomposition product after the first hydrocracking catalyst layer before the input of the second hydrocracking catalyst layer, and mixture containing decomposition product and repeatedly added hydrogen is passed through the second hydrocracking catalyst layer; d1/(d1+d2)≥1/3 (1), in which d1 is distance from input to output of the first hydrocracking catalyst layer and d2 is distance from input to output of the second hydrocracking catalyst layer; at that, wax can represent the wax obtained by Fischer-Tropsch synthesis, and the first and the second catalyst layers can contain ultrastabilised Y zeolite.
EFFECT: increasing the output of fuel substrate by improving the process.
8 cl, 6 ex, 1 tbl, 2 dwg
FIELD: oil-and-gas production.
SUBSTANCE: it is described method of catalytic hydrogen cracking, provided for manufacturing of ultra low-sulphur diesel-fuel oil and which provides implementation of hydrogen cracking of hydrocarbon basic at increased values of temperature and pressure. Formed as a result flow flowing out from the zone of hydrogen cracking is stripped by hydrogen in corresponding area of implementation of stripping in which it is held, in essence, the same pressure which exists in the area of hydrogen cracking with formation at that the first gas hydrocarbon stream and the first liquid hydrocarbon flow. The first gas hydrocarbon stream containing carbohydrates, boiling point of which is in the same range that for diesel fuel, it is introduced into desulfurisation area and then partly condensed with receiving at that enriched by hydrogen gas flow and the second liquid hydrocarbon flow, containing carbohydrates, boiling point of which is in the same range as for diesel fuel. The first liquid flow is separated with receiving herewith of the third liquid hydrocarbon flow containing hydrocarbons, boiling point of which is in the same range as for diesel fuel, herewith this third flow is also introduced into desulfurisation zone. In conclusion it is provided capture of oil product flow, received in the form of ultra low-sulphur diesel fuel.
EFFECT: increasing of yield of ultra low-sulphur diesel fuel.
11 cl, 1 ex, 3 tbl, 1 dwg
SUBSTANCE: invention relates to a method of obtaining low-viscous white oils, in which vacuum gasoil is subjected to hydrocracking with the volume ratio of hydrogen to a raw material of 800-1000 nm3/m3, volume rate of the raw material supply of 0.4-0.6 h-1, temperature of 340-360°C and partial pressure of hydrogen of 20-30 MPa on Ni/Mo catalyst, applied on a silica-alumina carrier, with the content of active components counted per the catalyst burnt at a temperature of 600°C, wt %: MoO3 - 35.0, NiO - 15.0, SiO2 - 7.0 or on Ni/W catalyst, applied on the silica-alumina carrier, with the content of active components counter per the catalyst burnt at a temperature of 600°C, wt %: WO3 - 25.0, NiO - 10.0, SiO2 - 5.0. The target fraction with the boiling out temperature from 280 to 340°C, the content of aromatic hydrocarbons above the required norm and the temperature of solidification not higher than minus 10°C is separated from the obtained stream, boiling out in the range of temperatures from 280 to 400°C. Hydration of the target fraction is carried out by its contact with hydrogen with the volume ratio of hydrogen to the raw material of 800-950 nm3/m3 on the catalyst at a temperature of 240-320°C, partial pressure of hydrogen of 6.0-8.0 MPa, volume rate of the raw material supply 0.25-0.5 h-1.
EFFECT: reduction of the technological process of obtaining white oils for the medical purpose.
4 cl, 1 tbl, 5 ex
FIELD: oil-and-gas industry.
SUBSTANCE: invention relates to the method of hydroprocessing of hydrocarbonic raw materials comprising: hydrocracking of the first flow of hydrocarbons in presence of the first hydrogen flow and hydrocracking catalyst for obtaining of the outgoing hydrocracking flow; hydrotreating of the second flow of hydrocarbons in presence of the second flow of hydrogen and the hydrotreating catalyst for obtaining of the outgoing hydrotreating flow; separation of the outgoing hydrotreating flow at the temperature 121-316°C (250-600°F) into the vaporous outgoing hydrotreating hydrogen containing flow, and the liquid outgoing hydrotreating flow; mixing, at least, a part of the named outgoing vaporous hydrotreating flow, at least, with a part of the named outgoing hydrocracking flow for obtaining of a mix; and fractionation, at least, of a part of the named mix. The invention also relates to the device for hydrocarbon hydroprocessing.
EFFECT: offered invention allows to obtain motor (diesel) fuel with low sulphur content.
6 cl, 2 dwg, 1 ex
SUBSTANCE: invention relates to a fluidised-bed reactor and a method of catalytic hydrogenation in the reactor. The fluidised-bed reactor comprises a reactor shell, vertical to the ground, a phase separator located within the top part of the shell, an internal circulation zone, located under the phase separator. The internal circulation zone comprises a cylinder, a tapered diffusion section and a guide support. Both the cylinder and the tapered diffusion section at the bottom of the cylinder are located inside the reactor shell, the guide support is fitted on the shell inner wall at the bottom of the tapered diffusion section. The guide support is an annular protrusion of the reactor inner wall.
EFFECT: invention provides effective hydrogenation resulting in a high quality product, and stable operation of the reactor.
26 cl, 2 dwg, 4 tbl, 5 ex
FIELD: oil and gas industry.
SUBSTANCE: invention is related to hydrocarbon oil hydrotreating method using at least the first and second reactors. The method includes (i) contacting of hydrocarbon oil in the first reactor at high temperature and pressure with hydrotreating catalyst in presence of hydrogen-containing gas wherein hydrogen is consumed; (ii) division of the outgoing flow obtained at the stage (i) into partially hydrotreated hydrocarbon oil and contaminated hydrogen-containing gas by means of a steam stripper, wherein the waste hydrogen-containing gas is used as stripping gas; (iii) contacting of partially hydrotreated hydrocarbon oil obtained at the stage (ii) in the second reactor at high temperature and pressure with hydrotreating catalyst in presence of pure hydrogen-containing gas with consumption of this hydrogen, at that at least 80% of hydrogen consumed at the stages (i) and (iii) are replenished by additional pure hydrogen-containing gas supplied to the second reactor; (iv) separation of the product produced at the stage (iii) in the second reactor into hydrotreated hydrocarbon oil and waste hydrogen-containing gas, at that hydrotreated hydrocarbon oil may be extracted as a product, and (v) transporting of at least a part of hydrogen-containing gas obtained at the stage (iv), which has temperature of at least 200°C to perform the stage (ii) while using this gas as stripping gas.
EFFECT: effective usage of waste hydrogen-containing gas promotes minimisation of the required capacity of the compressor, facilitation of steam stripping, improvement of heat usage.
17 cl, 2 dwg
FIELD: process engineering.
SUBSTANCE: proposed process comprises compression of boost hydrogen in first compressor to get first flow of compressed boost hydrogen. First flow of compressed boost hydrogen is compressed in second compressor to get second flow of compressed boost hydrogen. Said second flow of compressed boost hydrogen is separated as second flow of compressed boost hydrogen for hydraulic treatment. First flow of hydrocarbons is processed over first flow for hydraulic processing including second flow of compressed boost hydrogen and first hydraulic processing catalyst to get first effluent flow of hydroprocessing products. Second flow of hydrocarbons is processed over second flow for hydraulic processing including first flow of compressed boost hydrogen and first hydraulic processing catalyst to get second effluent flow of hydroprocessing products. Said second effluent flow of hydroprocessing products is separated to get vaporous second effluent flow of hydroprocessing products. Said vaporous second flow is added to said boost hydrogen flow upstream of said first compressor.
EFFECT: perfected feed of hydrogen to separate process units.
9 cl, 2 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to method of diesel fuel production. Particularly, it pertains to compression of makeup hydrogen flow in compressor to bleed hydrogen flow from said compressed makeup hydrogen flow. Hydrocarbons flow is subjected to hydro cracking in the presence of hydrogen flow and catalyst to get outlet hydro cracking products flow to be separated in liquid flow and vapour flow to be compressed to get hydrogen compressed flow. Liquid outlet flow is fractionated to obtain diesel fuel flow. Hydrogen flow is bled for hydraulic cleaning from said compressed hydrogen flow for hydraulic cleaning of diesel fuel flow in the presence of hydrogen flow and catalyst to get outlet hydro cracking products flow. Invention covers also the diesel fuel production plant.
EFFECT: perfected process.
10 cl, 2 dwg
FIELD: oil and gas industry.
SUBSTANCE: invention is related to hydrocracking processes, under conditions of which large proportion of heavy hydrocarbon stock e.g. Vacuum Gas Oil (VGO) turns to hydrocarbons with lower molecular mass and lower boiling temperature. The invention relates to the method of production of base oil, involving: a) hydrocracking of heavy hydrocarbon stock with hydrocracking catalyst containing the preset amount less than 15 wt % of beta-zeolite with flow coming out of a hydrocracking plant containing at least 40 wt % of hydrocarbons boiling at temperature of 382°C (720°F), and b) separation from flow coming out of a hydrocracking plant of unconverted oil with pour point not above 18°C (65°F) in form of high-boiling fraction containing base oil.
EFFECT: improvement of base oil quality.
11 cl, 1 dwg, 4 tbl, 2 ex
FIELD: oil and gas industry.
SUBSTANCE: invention is related to a combined method of conversion of oil-derived hydrocarbon fractions into high-quality hydrocarbon mixtures as fuel, which includes catalytic cracking of hydrocarbon fraction in catalyst fluidised bed with catalyst containing ERS-10 zeolite, where the specified catalyst contains at least two components, where the specified components represent: (a) a component containing one or more catalytic cracking catalysts in fluidised, and (b) a component containing ERS-10 zeolite for obtaining Light Cycle Gas Oil (LCGO), hydrotreatment of light cycle gas oil, interaction of hydrotreated light cycle gas oil obtained at the previous stage of hydrotreatment in presence of hydrogen with catalytic system. The invention also touches the method of catalytic cracking and a stage of catalytic cracking in fluidised bed.
EFFECT: production of high-quality hydrocarbons, conversion increase.
21 cl, 3 tbl, 1 ex