356 results about "Light hydrocarbons" patented technology

The invention discloses a production method and a production device of an energy-saving sustainable aviation fuel, and the production method comprises the following steps: S1, adsorbing carbon dioxide in air by using an adsorbent, desorbing through high-temperature carrier gas, and cooling and compressing the desorbed carbon dioxide; s2, carbon dioxide and deionized water are preheated and then electrolyzed, and synthesis gas and oxygen are generated; s3, after the synthesis gas is compressed, performing Fischer-Tropsch reaction to generate a mixture of Fischer-Tropsch oil wax, light hydrocarbon and water, cooling and separating, and returning the Fischer-Tropsch reaction heat to preheat the synthesis gas; s4, pressurizing the Fischer-Tropsch oil wax, mixing the Fischer-Tropsch oil wax with hydrogen, carrying out hydrofining reaction to generate a gas-liquid isomerous oil-gas mixture, cooling and separating, and recycling heat energy of a product to And S5, after gas-liquid separation, preheating a liquid phase, carrying out rectification operation, separating and cooling to obtain a sustainable aviation fuel product. By recovering the heat in each link, the heat is efficiently utilized, and the energy-saving performance of production is improved.

The invention provides a method for preparing alkane olefin by catalyzing microalgae pyrolysis through an alkali modified molecular sieve, and belongs to the field of biomass energy utilization. According to the method, the ZSM-5 molecular sieve raw powder is modified by adopting the alkaline solution, so that the pore structure of the ZSM-5 molecular sieve can be improved, the distribution of acidic sites can be optimized, the regulation and control of a microalgae pyrolytic reaction path can be realized under relatively mild conditions, the deoxidation reaction can be promoted, the content of oxygen-containing products can be reduced, and the generation of alkane olefin substances can be promoted; the aromatization reaction strength is reduced, and the selectivity of light hydrocarbons is improved, so that the content of alkanes and olefins in the pyrolysis bio-oil reaches 70% or above, and the quality of the pyrolysis bio-oil is remarkably improved. Results of the embodiment show that the pyrolysis bio-oil provided by the invention is subjected to gas chromatography-mass spectrometry detection, and the alkane-olefin peak area content is greater than 70%.

The invention provides an efficient technological method and system for preparing aromatic hydrocarbon through CO2 hydrogenation. The process method comprises the following steps: 1) mixing feed gas containing CO2 and H2 with recycle gas to obtain a mixture flow, and carrying out first-stage reaction on the mixture flow after heat exchange heating to obtain a first-stage reaction product; 2) performing heat exchange and separation on the primary reaction product to obtain a water phase, a gas phase and an oil phase, discharging the water phase out of the system, compressing most of the gas phase to obtain continuous circulating gas, and circulating the circulating gas back to the step 1) to continue the reaction; a small part of gas phase is discharged as purge gas; 3) distilling out light hydrocarbon from the top of the tower by rectifying the oil phase to obtain aromatic hydrocarbon-rich oil from a tower kettle; 4) heating the light hydrocarbon and then carrying out secondary reaction to obtain a secondary reaction product; and 5) carrying out heat exchange and separation on the secondary reaction product to obtain a gas-phase product and a liquid-phase product, discharging the gas-phase product as purge gas, and circulating the liquid-phase product back to the light component removal tower for rectification and separation to obtain aromatic hydrocarbon-rich oil. The first-stage reaction realizes high per-pass conversion of CO2, and the two-stage reaction is coupled to realize high selectivity of aromatic hydrocarbon.

A testing device for measuring oil, gas and water contents in rock has a heating desorption unit that has a sample chamber for placing a rock sample to be detected, a crushing mechanism arranged within the sample chamber, and a heating mechanism. The heating desorption unit crushes and heats the rock sample in a sealed manner to achieve gas analysis and desorption analysis of oil and water contained therein, thus obtaining components to be detected. The device further has a cold trap collection unit in communication with the sample chamber, a light hydrocarbon capture unit in communication with the cold trap collection unit, a gas measuring unit in communication with the light hydrocarbon capture unit for measuring and calculating a gas volume; and a central control unit for controlling the testing device.

The invention relates to the technical field of continuous light dydrocarbon, in particular to a dynamic configuration device and method for a continuous light dydrocarbon standard sample. Comprising a device main body, a driving unit, a sample feeding assembly and a sample discharging assembly, the device main body comprises a constant temperature layer and a sample preparation bin which are arranged from outside to inside, the sample preparation bin comprises a first bin body and a second bin body, and the opposite ends of the first bin body and the second bin body are respectively connected with a driving unit; according to the device, automatic operation of the whole process can be achieved, and manual intervention intensity and operation errors are greatly reduced; the standard sample concentration output by the device is accurate, stable and good in repeatability, system errors caused by standard sample concentration deviation of the light hydrocarbon instrument can be effectively inhibited, errors of hydrocarbon component content detection are controlled within a low range, the reliability of oil-gas-water layer recognition and evaluation results is remarkably improved, solid data support is provided for oil exploration and development, and the method is suitable for popularization and application. And the exploration decision risk is reduced.

The present invention relates to a process for purifying a plastic feedstock comprising polypropylene, involving:a) dissolving the plastic feedstock in a dissolution solvent comprising a hydrocarbon-based compound having a boiling point of between −15° C. and 100° C., at a dissolution temperature of between 150° C. and 250° C., a dissolution pressure of between 1.0 and 18.0 MPa absolute, to obtain a crude polymer solution;b) purifying the crude polymer solution, comprising:b1) separation of the insoluble matter;b2) washing, with a dense solution;b3) extraction, with an extraction solvent; and / orb4) adsorption of the impurities; and thenc) solvent-polymer separation, using a supercritical separation section, at a temperature of between 160 and 300° C. and a pressure of between 2.7 and 10.0 MPa absolute, followed by at least one solvent recovery section, to obtain purified polypropylene.

The utility model discloses a safe pressurization system for air-light hydrocarbon mixed fuel gas. The device at least comprises a fuel gas buffer tank and a gas storage tank, the buffer tank is used for buffering the air-light hydrocarbon mixed gas; a primary compressor; the pressurizing device is used for pressurizing the fuel gas output by the fuel gas buffer tank to 0.15 MPa; the first-stage cooler is used for cooling the fuel gas output by the first-stage compressor for the first time; the secondary cooler is used for cooling the fuel gas again; and the second-stage compressor is used for pressurizing the fuel gas cooled by the first-stage cooler to 0.3 MPa. By means of two-stage pressurization and two-stage cooling, pressurization safety control of large-flow 6000 Nm < 3 > / h pentane air-mixed fuel gas is well achieved.

The present application relates to the technical fields of chemical synthesis, and discloses a kind of aviation kerosene production process and equipment, production process includes: carbon source gas, hydrogen, circulating gas is sent into main reactor reaction and obtains including hydrocarbon, methanol, CO, water and unreacted gas mixed component a;Mixed component a is sent into cascade reactor and is prepared to obtain including aviation kerosene component, light hydrocarbon component and water mixed component b, wherein light hydrocarbon component includes one or more of C2-C7 light hydrocarbon;Mixed component b is fractionally condensed to collect liquid phase and gas phase, and liquid phase is carried out three-phase separation to obtain aviation kerosene component, light hydrocarbon component and water respectively, aviation kerosene component is hydrotreated, fractionation to obtain aviation kerosene.The present application realizes the step-by-step control of reaction path in carbon source hydrogenation process through the synergistic effect of main reactor and cascade reactor, improves the selectivity of aviation kerosene target product, so that the obtained product meets the 3# aviation kerosene standard requirements in key indicators such as distillation range distribution, aromatic content and low temperature performance.

The application discloses a method for judging the extension of the oil reservoir swept range of a microbial polymer system, and the steps are as follows: (1) taking the oil well samples in the oil reservoir before and after the microbial polymer flooding to perform the whole hydrocarbon gas chromatographic analysis of crude oil, and determining the small molecular weight light hydrocarbon marker component reflecting the change rule of the crude oil composition; (2) comparing the chromatographic peak area of the small molecular weight light hydrocarbon marker component with the chromatographic peak area of the high molecular weight carbon number, and obtaining the parameter for characterizing the effective action of the microbial polymer; (3) comparing and analyzing the crude oil samples in the oil well before and after the parameter for characterizing the effective action of the microbial polymer, and determining the swept degree of the oil reservoir by the microbial polymer. The application discloses the application of the above method in the microbial oil production for judging the swept volume of the microbial polymer in the oil reservoir.

The application discloses a hydroprocessing method and a hydroprocessing system. The hydroprocessing method comprises a first-stage hydroprocessing step, a middle-stage separation step and a second-stage hydroprocessing step under the condition of 4-15 MPa. The middle-stage separation step separates the effluent obtained in the first-stage hydroprocessing step into heavy components and light components. The second-stage hydroprocessing step processes the heavy components. The reaction raw material of the hydroprocessing method of the application comprises any one, two, three or four of crude benzene full fraction, heavy benzene, coal-based light hydrocarbon and coal tar. The hydroprocessing system is used for implementing the hydroprocessing method of the application. The application realizes two-stage hydroprocessing through the middle-stage separation processing, and effectively separates the heavy components and the light components, so that each reaction stage processes the corresponding best adaptation effect according to the different properties of the raw materials, and the best selection of each component in the raw material into the target product is ensured.

The utility model relates to the technical field of oil and gas field development engineering, in particular to a research experiment device for dissolved CO2 interphase mass transfer in a crude oil system. The experimental device comprises four high-pressure displacement pumps, three intermediate containers, a high-pressure five-way valve, a high-pressure four-way valve, a high-pressure energy accumulator, a high-pressure constant-volume sampling ring, a high-pressure buffer, a high-pressure sampler, a chromatographic analyzer, a programmable constant-temperature box, a high-temperature and high-pressure phase state instrument, a polarization camera and the like. Rapid energy compensation of a two-component fluid can be realized, pressure change disturbance caused by sampling is inhibited, and the interphase mass transfer process and degree of crude oil in which CO2 is dissolved when the crude oil is in contact with light hydrocarbon gas are intuitively tested.

The present disclosure provides methods and systems for producing a C4+ compound, including the steps of: (i) reacting a feed stream comprising C1+O1-3 hydrocarbons in the presence of an acid condensation (AC) catalyst at a condensation temperature and condensation pressure to produce an AC product stream including the C4+ compound; (ii) fractionating AC product stream into an AC liquid product stream including organic products and a vapor stream; (iii) fractionating the AC liquid product stream by a fractionation column into a liquid C4+ compound product stream and a gaseous overhead stream; (iv) cooling the gaseous overhead stream to produce a liquid reflux stream and a gaseous vent stream; (v) recycling a first portion of the liquid reflux stream to the fractionation column for the fractionation in step (iii); and (vi) recycling a second portion of the liquid reflux stream to the feed stream for the reaction in step (i).

The invention belongs to the technical field of natural gas treatment, and discloses a process and a system for recovering ethane and other light hydrocarbon components from oilfield associated gas. A washing tower is arranged before dehydration, heavy hydrocarbon components in the oilfield associated gas are removed, the influence of the heavy hydrocarbon components on a molecular sieve dehydration device is reduced, the service life of a molecular sieve is prolonged, and a liquid phase separated by a low-temperature separator is cooled by a cold box to be cooled and throttled to enter the top of a demethanizing tower; and the low-temperature freezing blockage influence of the carbon dioxide component on the demethanizer can be well reduced.

The invention relates to a generation method, device, equipment and medium of a natural gas cause identification chart, in particular to the technical field of natural gas exploration, and the generation method comprises the following steps: performing a hydrocarbon generation simulation test on a hydrocarbon source rock sample to obtain gaseous analysis gas; performing natural gas composition analysis, natural gas C6-C8 light hydrocarbon composition analysis and natural gas C1-C5 carbon isotope and hydrogen isotope analysis on gaseous analysis gas, and drawing a gas component-gas component relational graph, a light hydrocarbon component-light hydrocarbon component relational graph and a hydrocarbon gas carbon isotope-carbon isotope relational graph of different closed systems; and screening parameters with differences to establish a natural gas cause identification chart of the high-over mature multi-closed system. According to the generation method provided by the invention, a hydrocarbon generation simulation experiment and oil-gas product chemical analysis are carried out, a multi-closed system natural gas cause identification chart is established, and theoretical support is provided for cover layer closure evaluation in regional oil-gas exploration, regional oil-gas resource evaluation and oil-gas-containing distant view and exploration field evaluation.

The application relates to the adsorption and desorption technical field and discloses an adsorption and desorption device and a treatment method for treating light hydrocarbon VOCs waste gas, which comprises an inlet flame arrester, one end of the inlet flame arrester is fixed with a light hydrocarbon VOCs waste gas inlet, the other end of the inlet flame arrester is fixed with a plurality of air draft fans through Y-shaped pipelines, the air draft fans are fixed with adsorption and desorption devices through pipelines, a plurality of functional layers are arranged in the adsorption and desorption devices, the functional layers comprise adsorption and desorption layers, heat preservation and cold preservation layers and condensation and heat exchange layers, oil-water separators are fixed in the condensation and heat exchange layers of the adsorption and desorption devices through pipelines. Through the unique adsorption and desorption device structure design, the pipeline arrangement is greatly simplified, the device land occupation area is effectively reduced, the investment cost is reduced, the temperature control is guaranteed, the safety hidden danger caused by high temperature is avoided, and the problems of space and high investment cost are solved.

The invention discloses an oil field associated gas decarburization system and decarburization method, and belongs to the technical field of carbon dioxide trapping, the oil field associated gas decarburization system comprises an absorption section and an expansion section, the absorption section comprises a first compressor and an absorption tower, and the first compressor pressurizes process gas; the first compressor and the absorption tower are sequentially arranged in the flowing direction of process gas; the expansion section comprises an expansion machine, the expansion machine can recycle pressure energy generated by the expansion machine and supply energy to the first compressor, and the absorption tower and the expansion machine are sequentially arranged in the flowing direction of the process gas; the first compressor and the expansion machine are an integrated device; the expansion working section is used for reducing pressure of light hydrocarbon and doing work through expansion, and pressure energy can be recycled to supply energy to the first compressor; according to the embodiment, the expansion machine is used for recycling pressure energy of high-pressure light hydrocarbon and converting the pressure energy into mechanical energy, energy is directly supplied to the first compressor in the integrated equipment, and the problem of pressure energy waste caused by pressure relief of the light hydrocarbon in a traditional oil field associated gas decarburization system is solved.

This invention belongs to the field of energy catalysis technology and discloses a photothermal coupled ethane oxygen-free dehydrogenation catalyst, its preparation method, and its application. The invention constructs a dual-active-site catalytic system by impregnating and calcining followed by hydrolysis under alkaline conditions, synergistically loading a first and a second co-catalyst metal onto a titanium dioxide substrate in single-atom form. This photothermal coupled ethane oxygen-free dehydrogenation catalyst significantly improves the separation efficiency of photogenerated charges and enhances light absorption capacity. It achieves extremely high ethylene yield and selectivity at lower temperatures and exhibits excellent long-term reaction stability, possessing significant industrial application value for the utilization of light hydrocarbon resources.

The present disclosure relates to a method for separating naphtha, comprising: feeding naphtha and a first desorbent into a first adsorption separation tower for first adsorption separation to obtain a first extract and a first raffinate; feeding the first raffinate into a first rectifying tower for first rectification treatment to obtain a first stream mainly containing cycloalkanes and alkanes; feeding the first stream and a second desorbent into a second adsorption separation tower for second adsorption separation to obtain a second extract and a second raffinate; feeding the second raffinate into a second rectifying tower for second rectification treatment to obtain a second stream mainly containing alkanes; feeding the first extract and the second extract into a third rectifying tower for third rectification treatment to obtain a third stream mainly containing aromatic hydrocarbons and cycloalkanes; wherein the first desorbent is selected from heavy aromatic hydrocarbon components, and the second desorbent is selected from light hydrocarbon components. The method of the present disclosure has low cost, simple process, high separation purity and high yield.

The application discloses a synthesis method of a phosphorus-containing ZSM-5 molecular sieve, which comprises the following steps: mixing a silicon source, an aluminum source, a template agent, alkali, water and a small amount of a phosphorus source in steps, moving into a stirring kettle for dynamic crystallization to obtain a crystallization intermediate product, further mixing slurry containing the crystallization intermediate product with a phosphorus-containing solution, adjusting the pH of the solution and performing hydrothermal treatment, then evaporating the solution to obtain a dry gel, crystallizing the dry gel under ammonia steam auxiliary conditions, and finally performing washing, filtering, drying and calcining in sequence to obtain the phosphorus-containing ZSM-5 molecular sieve. The method can efficiently introduce the phosphorus element into the ZSM-5 molecular sieve, inhibit the removal of framework aluminum, improve the acid properties, thereby improving the hydrothermal stability and catalytic reaction performance of the molecular sieve, and has important application value in the field of light hydrocarbon catalytic cracking for preparing low-carbon olefins and the like.

The invention discloses a leak-free reciprocating pump device for conveying a light hydrocarbon medium, which comprises a pump body, a box body and a plunger, and a plunger operation cavity, a liquid inlet valve and a liquid discharge valve are arranged in the pump body. And a stepped depressurization recovery module and an active hydraulic blocking and sealing module are sequentially arranged in the box body. The stepped depressurization recovery module achieves step-by-step depressurization of leaked media through two stages of sealing assemblies and a leakage collection cavity between the two stages of sealing assemblies, and the media are guided back through a backflow one-way valve. The active hydraulic blocking and sealing module injects lubricating oil higher than medium pressure into the lubricating oil cavity to form hydraulic sealing, and the active hydraulic blocking and sealing module and the rear end sealing assembly jointly block medium migration. And the lubricating oil cavity is connected with an external oil station to form a circulating cooling loop. The two modules cooperate to form a two-way blocking closed-loop sealing system, and the problems of leakage and gasification in light hydrocarbon medium high-pressure conveying are effectively solved.

A non-oxidative conversion process includes processing a light hydrocarbon feed stream comprising C1 to C3 alkanes in a reactor under catalytic cracking conditions including a temperature of about 850° C. and up to 1020° C. and a residence time of from about 1 second to about 15 seconds in the presence of a catalytic cracking catalyst, thereby producing a product effluent stream comprising a C2 to C10 hydrocarbon product and hydrogen. The product effluent stream contains less than or equal to about 6.5 wt. % of acetylene.

The present application provides a method for maximum production of propylene by catalytic cracking of hydrocarbons and a reaction system thereof, which comprises contacting light petroleum hydrocarbons such as diesel oil with a mesoporous molecular sieve catalyst in an isokinetic fluidized bed reactor, and maintaining self-heating balance by recycling regeneration flue gas to maximum production of propylene and the like. The method of the present application can process not only light hydrocarbons such as diesel oil, but also heavy oils such as naphtha, wax oil and residual oil, has high propylene yield, and can achieve self-heating balance, thereby not only solving the problem of excess production capacity of refinery diesel oil, but also making up for the deficiency of chemical materials.

The application discloses a method for extracting helium from low-helium-containing natural gas and co-producing ethane, relates to the technical field of helium extraction from natural gas, and specifically relates to a method for extracting helium from low-helium-containing natural gas and co-producing ethane, which comprises the following steps: raw gas decarburization: CO2 in pressurized raw gas is absorbed by activated MDEA solution, and the CO2 content is removed to below 50 ppm; raw gas dehydration and mercury removal: dehydration and mercury removal are performed by using a three-tower isobaric molecular sieve dehydration and mercury removal process, and a purified gas with a water content of less than or equal to 1 ppm and a mercury content of less than 0.01 mu g / m3 is obtained; natural gas helium extraction. The application adopts three external mixed refrigerant refrigeration cycle systems such as a mixed refrigerant precooling process without expansion refrigeration, the system has rich regulation means, can provide matched cold energy for a crude helium extraction process, is flexible in operation, and is good in adaptability to raw materials; the natural gas helium extraction is simultaneously used for co-producing ethane and other light hydrocarbon products, and the energy consumption of a demethanizer gradient multi-stream side line extraction process device is greatly reduced.

The invention discloses an experimental device and method for research on dissolved CO2 interphase mass transfer in a crude oil system, and relates to the technical field of oil-gas field development engineering. The experimental device comprises a fluid injection system, a phase reaction and observation system, a pressure balance and control system and an on-line sampling and component analysis system, and can realize rapid energy compensation of two-component fluid, so that pressure change disturbance caused by sampling is inhibited; the interphase mass transfer process and degree of the dissolved CO2 in contact with the light hydrocarbon gas are visually tested through an experimental method.

The application relates to the field of mixed gas purification and discloses application of gaseous alkane in reducing the risk of combustion and explosion in the deoxidation process of oxygen-containing gas, which comprises: mixing the oxygen-containing gas with hydrogen in the presence of stabilizing gas to perform an oxidation reaction; wherein the stabilizing gas is gaseous alkane, and the oxygen-containing gas contains oxygen and optional other flammable gas. The method for deoxidizing the oxygen-containing light hydrocarbon by hydrogen provided by the application reduces the risk of combustion and explosion of the mixed gas by taking gaseous alkane as the stabilizing gas, adopts the hydrogen-catalyzed reaction to promote the reaction of oxygen in the mixed gas with hydrogen to generate water, achieves the purpose of deoxidation of the oxygen-containing gas, the reaction product is clean, the hydrogen-catalyzed reaction can effectively inhibit the occurrence of carbon deposition on the surface of the catalyst and the generation of carbon oxides, and the hydrogen-catalyzed reaction has strong bearing capacity for the fluctuation of the oxygen content of the raw material gas.

The invention discloses an adsorbent for removing methanol from liquid hydrocarbon as well as a preparation method and application of the adsorbent, belongs to the technical field of liquid hydrocarbon dealcoholization, and can effectively remove methanol from liquid hydrocarbon through combination of active adsorption species and a porous carrier in a specific proportion. The mass loading amount of the active adsorption species is in the range of 5-50%, enough adsorption capacity is ensured, meanwhile, the stability and mechanical strength of the adsorbent are kept, the adsorbent can effectively adsorb methanol in liquid hydrocarbon, the technical problem that the methanol content in the liquid hydrocarbon is high, and consequently products such as ethane, liquefied petroleum gas and stable light hydrocarbon contain methanol is solved, and the method is suitable for industrial production. The adsorbent with excellent methanol removal performance can be efficiently prepared through simple preparation steps including dissolving, mixing, drying by distillation under reduced pressure and drying. The method is low in cost and easy for industrial production, and the liquid hydrocarbon raw material containing trace methanol is treated by the solid adsorbent bed layer, so that methanol can be efficiently removed, and a liquid hydrocarbon product meeting requirements is obtained.

The utility model discloses a system for increasing yield of light hydrocarbon by recovering hydrogen through a membrane method. The system comprises a heater, a membrane separator, a water cooler, a gas-gas heat exchanger, a condenser and a gas-liquid separator which are connected in sequence, a raw material gas pipeline is arranged at one end of the heater; a hydrogen product pipeline is arranged on the membrane separator; a light hydrocarbon product pipeline is arranged at one end of the gas-liquid separator. According to the application, the high-temperature-resistant membrane separator is used for recovering hydrogen on the permeation side, and meanwhile, a hydrocarbon dew point as high as possible is obtained on the non-permeation side, and when the hydrocarbon dew point is higher, the condensation recovery rate of downstream light hydrocarbon is higher; meanwhile, the high-efficiency recycling rate of hydrogen and light hydrocarbon is realized. In addition, the gas-gas heat exchanger arranged in the system can recycle cold energy, the load of the condenser and the use amount of the refrigerant are reduced, and therefore energy consumption is further reduced.

The application provides a device for coupling steam cracking of hydrocarbon oil to produce low-carbon olefins, which is characterized in that two radiation sections are arranged, and two-stage steam cracking is performed on heavy hydrocarbon oil and one-stage steam cracking is performed on light hydrocarbon oil, so that the coupling steam cracking of light and heavy hydrocarbon oils can be realized, the cracking capacity for heavy hydrocarbon oil can be effectively improved, the consumption of dilution steam for cracking light hydrocarbon oil is reduced, the total low-carbon olefin yield of the raw materials is improved, and the device is flexible and convenient to operate, has low investment cost and occupies less land.

The application provides a light hydrocarbon catalytic cracking device and process, the light hydrocarbon catalytic cracking device includes liquid feed riser, light hydrocarbon diameter expansion reactor, reactant riser and light hydrocarbon settler;One end of the liquid feed riser penetrates into the shell at the bottom of the light hydrocarbon diameter expansion reactor to enter the light hydrocarbon diameter expansion reactor, the annular space formed by the liquid feed riser and the shell of the light hydrocarbon diameter expansion reactor has a gas light hydrocarbon feed distributor, a gas distribution plate and a catalyst dense bed section arranged from bottom to top in sequence in the lower part, and the upper part of the light hydrocarbon diameter expansion reactor is provided with a flow regulating member;The top of the light hydrocarbon diameter expansion reactor is communicated with the bottom of the reactant riser, the top of the reactant riser penetrates into the shell at the bottom of the light hydrocarbon settler to enter it and is communicated with the separation equipment in the light hydrocarbon settler, and the gas outlet of the separation equipment is connected with the oil gas outlet pipeline;The liquid feed riser includes a catalyst pre-lifting section, a liquid light hydrocarbon feed and reaction section and an outlet adjusting section communicated in sequence from bottom to top.

This invention discloses a system and method for thickening and viscosity-reducing heavy oil extraction. The system includes: a light / mixed hydrocarbon premixing unit, which receives light hydrocarbons and mixed hydrocarbons in a certain proportion from an oilfield extraction station and premixes them for later use; a thinning agent dosing unit, which receives exported rare crude oil and adds asphaltene stabilizer for later use; and a thinning medium mixing unit, which receives the premixed light hydrocarbons and mixed hydrocarbons and the doped rare crude oil, mixes them, and heats them to form a thinning medium. This thinning medium is transported to the wellhead via an oilfield extraction transfer station for thickening and viscosity-reducing extraction of heavy oil. This invention uses light hydrocarbons and mixed hydrocarbons produced by an oilfield extraction station, mixed with rare crude oil containing asphaltene stabilizer in a certain proportion to form a thinning medium, which not only effectively reduces the viscosity of heavy oil but also requires a lower amount of rare crude oil.