456 results about "Conversion reaction" patented technology

A direct air capture (DAC) of CO2 system includes a reaction reactor having a solid, amine-functionalized sorbent configured to sequester CO2 from air; an in-situ dual-function device configured as a CO2 conversion reactor and an exchange fluid regeneration device; and the exchange fluid, recirculating between the reaction reactor and the dual-function device, configured to capture the sequestered CO2 from the solid sorbent in the reaction reactor and release the captured CO2 in the conversion reactor, the exchange fluid including one or more amino acids.

The invention belongs to the technical field of leguminous plants, and particularly discloses a soybean stem protoplast preparation and transformation method, which specifically comprises the steps of soybean aseptic seedling culture, soybean stem protoplast preparation and protoplast transformation. According to the method, the protoplast is prepared from the stem part of the first internode of the soybean, the formula of an enzyme solution is optimized, the protoplast cleaned and collected by W5buffer is utilized for conversion, and PEG instantaneous conversion reaction conditions are utilized, so that the yield and the conversion rate of the soybean protoplast are improved, and the method is more beneficial to identifying the soybean gene function.

The invention discloses lithium sulfide, a two-step double decomposition preparation method and application of the lithium sulfide in an all-solid-state battery, and belongs to the technical field of solid-state batteries. According to the preparation method, a two-step decomposition synthesis technology is adopted, lithium carbonate and ammonium thiocyanate are used as raw materials, the raw materials are uniformly mixed and then placed in a high-temperature reactor, a step heating sintering procedure is completed in an inert gas atmosphere, and the purpose of fully decomposing and converting the raw materials is achieved by accurately controlling the temperature and the time; after a product is obtained through reaction, the high-purity lithium sulfide material is obtained after the product is cooled to the room temperature. The method for preparing the lithium sulfide is low in raw material cost, simple in reactant formula and free of side reaction in the reaction process, and the finally generated product is few in impurity, high in purity and good in crystallinity.

The invention discloses a process for preparing synthesis gas by non-catalytic and catalytic coupling of hydrocarbon-containing raw material gas. The process comprises the following steps: (S1) dividing preheated raw material gas into first raw material gas and second raw material gas; (S2) introducing the first raw material gas, water vapor and preheated oxygen into a non-catalytic reactor, and carrying out a non-catalytic conversion reaction to generate first synthesis gas; (S3) introducing the second raw material gas and supplemented water vapor into a pre-catalytic reactor, and carrying out pre-catalytic conversion reaction to generate second synthesis gas; (S4) introducing the first synthesis gas and the second synthesis gas into a catalytic reactor, and carrying out catalytic conversion reaction to prepare third synthesis gas; and (S5) carrying out heat recovery on the prepared third synthesis gas to obtain the synthesis gas. According to the invention, the non-catalytic conversion reaction and the catalytic conversion reaction are coupled, so that the material consumption is greatly reduced, and meanwhile, heat is provided for the catalytic conversion reaction through the non-catalytic conversion reaction, so that the heat is recovered to a great extent.

The invention discloses a mutant and a genetically engineered bacterium for catalytic synthesis of D-chiral inositol by using the mutant, and relates to the technical field of biology, inositol dehydrogenase is subjected to site-directed saturation mutagenesis at N154 and C269 sites and then is subjected to combined mutagenesis at M123, V157, A171 and Y277 to obtain the inositol dehydrogenase mutant, so that a conversion reaction is carried out in a forward direction, and the conversion rate of D-chiral inositol is greatly improved.

The invention discloses a mixed waste plastic recovery and conversion reaction system which comprises a waste plastic raw material bin, a spiral feeder, a reaction furnace, a combustion chamber, a condensing device and an oil storage tank. The reaction furnace is sequentially provided with a feeding end, a reaction area and a discharging end, the reaction area comprises a plurality of reaction sections which are connected in series, the reaction sections are sequentially and continuously arranged along the length of a furnace body, and each reaction section is provided with a temperature control device which is independently opened and closed; the discharging end is communicated with a condensing device, and the condensing device is provided with a condensed kerosene outlet and a non-condensed pyrolysis gas outlet; the non-condensing pyrolysis gas outlet is divided into two paths, one path is communicated with the reaction furnace, and the other path is communicated with the combustion chamber. According to the invention, multiple reaction sections are combined and connected in series, multiple reaction mode combinations are provided, and high-value aviation kerosene can be produced. According to the invention, dechlorination can be effectively carried out before pyrolysis, and equipment corrosion, catalyst poisoning, secondary pollution and the like are prevented; according to the invention, the non-condensed gas is recovered for hydrogenation upgrading of products and self-heating of the system, so that energy is saved.

The invention relates to the technical field of catalysis, and particularly discloses a method for preparing pure biodiesel from kitchen waste oil through enzyme catalytic desulfurization. The method comprises the following steps: adding a Sm2O3 / ZrO2 solid acid catalyst into the kitchen waste oil for pretreatment to obtain pretreated waste oil, and then adding lipase into the pretreated waste oil for catalyzing transesterification to obtain the biodiesel. According to the method for preparing the pure biodiesel from the kitchen waste oil through enzyme catalytic desulfurization, in-situ esterification and synchronous desulfurization of free fatty acid can be completed in a single-step reaction, the stability of a conversion reaction is effectively improved, the production process is simplified, and the conversion efficiency of preparing the biodiesel from the kitchen waste oil is improved.

A catalyst suitable for use in carbon oxide conversion reactions is described, said catalyst in the form of a shaped unit formed from an oxidic catalyst powder, said catalyst comprising 30-70% by weight of copper oxide, combined with zinc oxide, alumina and silica, having a Si:Al atomic ratio in the range 0.005 to 0.15:1, and having a BET surface area ≥105 m2 / g and a copper surface area >37 m2 / g catalyst. The catalyst is prepared by a co-precipitation method using an alumina sol.

The invention belongs to the field of batteries, and particularly discloses a battery positive electrode and a zinc-iodine battery containing the battery positive electrode. The battery positive electrode comprises a positive electrode material layer, and the positive electrode material layer contains a positive electrode material; the positive electrode material contains an active substance and a polar organic catalyst; the polar organic catalyst contains at least one group selected from hydroxyl, carboxyl, aldehyde group, ketone group, ester group, ether group, amino, amide group, nitryl, nitrile group, sulfonic acid group and quaternary ammonium salt. The polar organic catalyst is introduced into the battery positive electrode, the contained polar group can efficiently catalyze the iodine positive electrode four-electron conversion reaction, the reaction kinetics of the battery system is obviously accelerated, the iodine positive electrode capacity multiplication is realized, the complete conversion of I0 / I + can be realized, and the high-voltage platform capacity ratio reaches 50%; and the iodine positive electrode capacity, the rate capability and the self-discharge capacity retention rate of the zinc-iodine battery containing the battery positive electrode are remarkably improved.

The invention relates to a method for recycling lead by treating lead plaster of a waste lead-acid storage battery, and belongs to the technical field of lead secondary resource recycling. The method comprises the following steps: (1) slurrying lead paste with water to obtain slurry; adding sodium carbonate and sodium sulfite into the slurry, heating and then carrying out reduction-conversion reaction under a certain temperature condition to obtain a reaction mixture containing a lead-containing solid and a liquid phase; (2) carrying out solid-liquid separation on the reaction mixture obtained in the step (1) under the condition that the temperature is not lower than 40 DEG C to obtain a lead-containing solid; (3) drying the lead-containing solid obtained in the step (2) to obtain a dried lead-containing material; and (4) the dried lead-containing material obtained in the step (3) is subjected to high-temperature reduction smelting, and metal lead is obtained. According to the method, a wet process and a pyrogenic process are adopted, the used raw materials such as sodium carbonate, sodium sulfite and pea coal are cheap and easy to obtain, the whole technological process is short, operation is easy, the lead recovery rate is high, and industrial large-scale application and popularization are facilitated.

The invention provides a pseudoxanthomonas wenibertii strain TY3-10 and application thereof in preparation of rare ginsenoside, and belongs to the technical field of biological medicine. The preservation number of the pseudoxanthomonas wenibertii strain TY3-10 disclosed by the invention is CGMCC (China General Microbiological Culture Collection Center) No.35238. The pseudoxanthomonas wenibertii The strain TY3-10 has the characteristic of producing beta-glucosidase and beta-xylosidase, and can be used for converting various ginsenosides and notoginsenoside into rare ginsenosides F2, Rd2, Fd, C-Mc1 and Rh1. The invention further provides a method for preparing the rare ginsenoside, and ginsenoside is subjected to a conversion reaction under the action of the pseudoxanthomonas wenibertii strain TY3-10 to obtain the rare ginsenoside. The invention provides a new process for preparing the rare ginsenoside, and has a wide application prospect.

To provide a technique for improving the utilization rate of carbon dioxide in a fuel gas production system.SOLUTION: The fuel gas production system includes a storage device including a recovery device configured to recover carbon dioxide, a recovery unit configured to recover carbon dioxide separately from the recovery device, and a storage unit configured to store the carbon dioxide recovered by the recovery unit, a fuelization device configured to supply hydrogen and at least one of the carbon dioxide recovered by the recovery device and the carbon dioxide stored by the storage device to a reactor to generate fuel gas, and a control unit configured to control the storage device to supply the carbon dioxide recovered by the recovery unit to the storage unit when a differential pressure becomes smaller than a differential pressure threshold.SELECTED DRAWING: Figure 4

The invention relates to a method for separating heavy metal cations and radionuclides from aqueous solutions. The method according to the invention can be used to separate dissolved and / or suspended naturally occurring ions or radioactive ions produced by radioactive decay, nuclear transformation reactions such as nuclear fission, or, for example, by activation with neutron radiation, from aqueous solutions.

The invention discloses a rapid conversion method for continuous production of diazonium salt, which comprises the following steps: dissolving an amide raw material in a polar solvent, adding acid to obtain an amide salt solution, and dissolving sodium nitrite in water to obtain a sodium nitrite aqueous solution; constructing a reaction system in the reaction kettle; synchronously dropwise adding the amide salt solution and the sodium nitrite aqueous solution into a reaction system according to a set proportion; enabling the amide salt solution and the sodium nitrite aqueous solution to be subjected to a conversion reaction in the reaction kettle through automatic control while dropwise adding in a certain proportion synchronously, so as to generate diazonium salt; after diazonium salt is generated in the reaction kettle, carrying out instant conversion reaction on the diazonium salt and a reaction system to obtain a rapid conversion reaction mixture; and treating the rapid conversion reaction mixture, and separating to obtain a target product. According to the invention, the safety problem of diazonium salt production, storage, transportation and use is solved, the yield of diazotization and next reaction is greatly improved, the automation degree is high, and the purpose of eliminating the danger of diazonium salt can be achieved.

The invention relates to a method and device for preparing low-carbon olefins, and the method comprises the following steps: S1, contacting raw oil with a catalytic conversion catalyst in a catalytic conversion reactor for catalytic conversion reaction to obtain a catalytic conversion reaction product; s2, separating the catalytic conversion reaction product to obtain ethylene and propylene as well as a first circulating olefin flow containing butene and / or a second circulating olefin flow containing C5 + olefin; s3, enabling the olefin material to enter an etherification unit, and contacting the olefin material with an alcohol raw material under an etherification condition to obtain a circulating ether material and etherified olefin; and S4, enabling at least one part of etherified olefin to enter an isomerization unit, and carrying out isomerization reaction in the presence of an isomerization catalyst to obtain isomerized olefin. According to the method disclosed by the invention, the conversion of ethers into low-carbon olefins can be realized, the yield and selectivity of ethylene and propylene are improved, the yield of methane is reduced, the content of methanol in the product is reduced to the greatest extent, and the conversion of low-cost methanol into low-carbon olefins is realized.

The invention belongs to the technical field of electrocatalytic carbon dioxide reduction catalysts, and discloses a silver-based catalyst suitable for fluctuating carbon dioxide electrolysis and a preparation method of the silver-based catalyst. The preparation method comprises the following steps: uniformly and continuously dropwise adding a potassium hydroxide solution into a silver nitrate solution to prepare a silver oxide catalyst, and further applying a constant reduction current to the silver oxide catalyst in the presence of carbon dioxide gas for in-situ reduction to prepare the quintuple twin crystal silver-based catalyst. The preparation method disclosed by the invention combines precipitation titration and in-situ electroreduction methods, and has the characteristics of simplicity in operation, greenness, high efficiency and suitability for mass production; meanwhile, the catalyst can maintain high selectivity to carbon monoxide products in an extremely wide potential window range of 3V when being used in an electro-catalysis carbon dioxide conversion reaction, and is very suitable for being directly matched and coupled with fluctuating renewable energy sources.

The invention discloses a catalytic cracking light naphtha processing method. The method comprises the following steps: (I) mixing catalytic cracking light naphtha with hydrogen, and then feeding the mixture into a hydrofining reaction zone for hydrofining reaction to obtain a refined naphtha material flow; (II) the refined naphtha material flow obtained in the step (I) enters a hydro-conversion reaction zone to be subjected to a hydro-conversion reaction, converted catalytic cracking light naphtha is obtained, and the temperature of the hydro-conversion reaction is 100-300 DEG C higher than that of the hydrofining reaction. According to the present invention, the olefin in the catalytic cracking light naphtha product is completely saturated, the normal hydrocarbon content is increased, and the triene yield can be substantially improved when the catalytic cracking light naphtha product is adopted as the ethylene raw material through steam cracking.

The application provides a doped rare earth oxide / carbon nanotube functional diaphragm for a battery and a preparation method thereof. 2‑x The functional diaphragm comprises a diaphragm base and a functional layer laid on one side surface of the diaphragm base, wherein the functional layer is composed of a lanthanum-doped cerium oxide / carbon nanotube (La-CeO 2‑x / CNT) composite material. In the functional diaphragm, the hydroxylated carbon nanotubes are interwoven to form a conductive network, which can not only physically block the migration of polysulfides but also construct a continuous electron transmission channel; the La doping causes the lattice distortion of CeO2 and promotes the generation of oxygen vacancies, thereby enhancing the chemical adsorption capacity of polysulfides and accelerating the conversion reaction kinetics, and further inhibiting the shuttle effect of lithium-sulfur batteries. The lithium-sulfur battery assembled based on the La-CeO 2‑x / CNT functional diaphragm exhibits high specific capacity, excellent rate performance and long cycle stability.

The utility model provides a mechanical decoking device in a carbon conversion reactor, which relates to the technical field of mechanical decoking equipment and comprises a decoking turntable, and a push cleaning mechanism is arranged inside and outside the decoking turntable; the pushing cleaning mechanism comprises pushing electric telescopic rods which are circumferentially arranged at equal intervals, mounting grooves which are circumferentially arranged at equal intervals are formed in the outer surface of the coke cleaning turntable, and the side surfaces, close to each other, of the plurality of pushing electric telescopic rods are fixedly connected with the inner side walls of the plurality of mounting grooves respectively. According to the mechanical decoking device in the carbon conversion reactor, the decoking turntable moves in the carbon conversion reactor, so that the pressure applied to the decoking turntable by a telescopic guide rod and a compression spring is conveniently detected by a pressure sensor, and the cleaning extrusion force of a cleaning brush on the inner wall of the carbon conversion reactor is adjusted; therefore, the cleaning brush of the mechanical decoking device can be in close contact with the inner wall of the carbon conversion reactor for cleaning, and the cleaning effect of the mechanical decoking device is improved.

The application discloses a processing method of aromatic raffinate oil. The method comprises the following steps: (1) contacting and reacting aromatic raffinate oil, hydrogen and a hydroconversion catalyst in a hydroconversion reaction zone, wherein the hydroconversion catalyst is a molecular sieve catalyst, and the molecular sieve is selected from any one of mordenite or ZSM-5 molecular sieve; (2) separating the hydroconversion reaction effluent obtained in the step (1) to obtain a hydrogen-rich gas and a liquid phase stream; and (3) separating the liquid phase stream obtained in the step (2) to obtain a liquid phase product and a gas phase product. The method can effectively convert isomeric alkanes in the aromatic raffinate oil into n-alkanes, and improve the ethylene raw material quality.

The invention provides a preparation method of manganese-doped iron phosphate, and relates to the technical field of lithium ion battery positive electrode materials, the preparation method comprises the following steps: S1, preparing a phosphoric acid solution, a ferrite solution, a phosphorus-oxygen mixed solution containing a phosphorus source and an oxidizing agent, a divalent manganese salt solution and an oxidizing agent solution; s2, adding a base solution, and pumping the ferrite solution and the phosphorus-oxygen mixed solution while stirring to obtain slurry A; s3, filtering and washing the slurry A to obtain a filter cake; s4, mixing and pulping the filter cake and water, sequentially adding a divalent manganese salt solution, an oxidant solution and phosphoric acid, heating to 80-100 DEG C, and carrying out conversion reaction for 1-3 hours to obtain slurry B; s5, filtering, washing and drying the slurry B to obtain manganese-doped iron phosphate dihydrate, and calcining the iron phosphate dihydrate to obtain manganese-doped anhydrous iron phosphate; the manganese salt solution is added in the precursor preparation stage, so that the manganese element is doped into iron phosphate crystal lattices in the form of ions, and the bulk phase doping effect can be better improved.

The present invention describes a method for preparing an amorphous silica-alumina-based material having incorporated therein, by means of precipitation, at least one acid solution and / or suspension of an aluminium source together with colloidal alumino-silicate particles having the structure of zeolite and conferring on the final material improved acidity relative to silica-alumina of the prior art, thereby providing a catalyst or a catalyst support that can be used in hydroconversion reactions.

The application discloses a method for producing ethylene raw material. The method comprises the following steps: mixing hydrocracking light naphtha and hydrogen into a first hydroconversion reaction zone to react, and then the reaction effluent enters a separation system to obtain hydrogen-rich gas and a first hydroconversion product; the first hydroconversion product is separated to obtain ethane, propane, isobutane, isopentane and n-pentane; the isobutane is mixed with hydrogen into a second hydroconversion reaction zone, and the reaction effluent is separated to obtain n-butane; the second hydroconversion reaction zone is filled with a hydroconversion catalyst containing ZSM-35 molecular sieve; and the isopentane is recycled to the inlet of the first hydroconversion reaction zone. The first hydroconversion reaction zone is filled with a hydroconversion catalyst containing mordenite, and at least two catalyst beds are filled; and the active metal content of the hydroconversion catalyst decreases in turn along the flow direction. The method can effectively improve the proportion of normal alkanes in the product and improve the quality of the ethylene raw material.

The invention relates to a method and a system for converting CO2 in regenerated flue gas. Water is fed into a water electrolysis device to be electrolyzed, and external oxygen and external hydrogen are obtained; feeding the external oxygen as combustion-supporting gas into a gas heat exchanger to exchange heat with high-temperature and low-pressure flue gas to obtain high-temperature combustion-supporting gas and low-temperature and low-pressure flue gas, feeding the high-temperature combustion-supporting gas into a catalytic cracking regenerator to perform regeneration and coke burning, and dividing the low-temperature and low-pressure flue gas into circulating flue gas and flue gas to be converted, and feeding the flue gas to be converted into a CO2 electrochemical conversion unit for electrochemical conversion reaction to obtain synthesis gas and regenerated oxygen. According to the invention, the regeneration efficiency of the catalyst is fully improved, the emission of CO2 in treated tail gas is reduced, the reasonable configuration of the treatment device and the efficient utilization of the electrolyzed water byproduct oxygen are realized, and the purpose of environmental protection is achieved while the economic benefit is improved.

The present application relates to a kind of methods for catalytically converting methane to olefins, aromatics and hydrogen in joule heat coupled metal catalytic reactor.The methane feed gas heated by hot joule heat is passed into metal catalytic reactor for catalytic conversion reaction to prepare olefins, aromatics and hydrogen using joule heat as heat source.The conversion rate of methane is 35-85%;The selectivity of olefins is 65-90%;The selectivity of aromatics is 13-40%;Zero carbon deposition.The present application has the characteristics of electric heating conversion efficiency > 90%, long catalyst life, high methane conversion rate and product selectivity, zero carbon deposition, catalyst does not need to be enlarged, small industrialization difficulty, good process repeatability, safe and reliable operation, etc., and has broad industrial application prospect.

The application discloses a glucuronolactone and a preparation method thereof, and belongs to the technical field of fine chemical product preparation. The method takes potassium phytate extracted from corn soaking liquid or rice bran acid soaking liquid as raw material, obtains inositol and potassium dihydrogen phosphate after hydrolysis, separates the hydrolysis liquid through chromatography, obtains potassium dihydrogen phosphate by concentrating and crystallizing the salt phase, and the material phase is inositol solution. Enzymatic conversion reaction is carried out by using fermentation to obtain enzyme liquid, glucuronic acid liquid is obtained, glucuronolactone is obtained by concentrating and esterifying, and then the glucuronolactone is obtained by concentrating, refining and crystallizing. In the method, the yield of potassium phytate to inositol is greater than 95%, the molar conversion rate of inositol enzymatic conversion to glucuronic acid is greater than 95%, and the total yield is greater than 89%, which is much higher than the traditional yield, and the content of the obtained glucuronolactone is greater than 99.2%. The glucuronolactone is prepared by enzymatic conversion of the intermediate inositol, the by-product is high-value potassium dihydrogen phosphate, the whole has good economic benefits, and industrial production can be realized.

The application provides a solid base catalyst and a preparation method and application thereof, and belongs to the field of heavy oil non-hydrogen reduction viscosity cracking catalysts. The solid base catalyst is composed of modified mesoporous materials, active metals, auxiliary metals and clay, and is applied in heavy oil catalytic conversion reaction. In the preparation method, a metal doping-dissolution process is innovatively adopted on the mesoporous material gel to construct a large number of defect sites, and under the action of an activation auxiliary and mechanical external force, the active gel is secondary sol-gelized, and has the dual functions of stabilizing the mesoporous material and the binder. Therefore, the traditional binder is not needed, the proportion of the mesoporous material can be greatly adjusted, and the pore structure of the mesoporous material is maximally reserved. The specific surface area of the solid base catalyst prepared by the method of the application is still not less than 270 m 2 / g after hydrothermal treatment at 800 DEG C for 17 hours. When the vacuum residue is treated, the heavy oil conversion rate is increased by more than 5 percentage points, the dry gas yield is reduced by more than 1 percentage point, and the coke yield is reduced by more than 5 percentage points.

The application discloses a CO2 capture method and system based on fuel staged conversion coupled with chemical looping combustion, and the method comprises the following steps: flue gas is introduced into a carbonation tower filled with metal oxygen carriers MeO and adsorbents A, the adsorbents A adsorb CO2 in the flue gas, and then the solid in the tower is transported to a calciner; the adsorbents A after adsorption are decomposed into the adsorbents A and CO2 in the calciner, the MeO in the calciner reacts with the substances transported in a fuel pre-conversion reactor to generate a reduced metal oxygen carrier; the regenerated adsorbents A and the reduced metal oxygen carrier in the calciner are transported to an air reactor to generate MeO and regenerated adsorbents A which are returned to the carbonation tower; fuel and reactants are introduced into the fuel pre-conversion reactor, part of the fuel is converted, and the products are sent into the calciner. Through fuel partial conversion and chemical looping combustion, the application realizes grade matching of the fuel conversion and the adsorbent regeneration process, avoids air separation energy consumption of separated pure oxygen, and effectively reduces CO2 capture energy consumption after medium-high temperature adsorption combustion.

The invention provides a preparation method of lithium hexafluorophosphate with low fluorine emission, and relates to the technical field of preparation of lithium hexafluorophosphate, the preparation method comprises the following steps: by taking anhydrous lithium fluoride as a lithium source in a closed reaction kettle, adding a carbonic ester and nitrile mixed organic solvent system, and adding ammonium pentafluorophosphate or an organic complex thereof as a phosphorus-containing precursor, in-situ generation and directional reaction of the fluorine-phosphorus-containing active substance are realized by controlling the slow release rate of the precursor. The solid weakly-alkaline fluorine trapping agent is arranged in the system and can dynamically adsorb or complex generated hydrofluoric acid and other fluorine-containing byproducts, so that fluorine dissipation is reduced. The reaction process is divided into three continuous windows of low-activity pre-reaction, directional main reaction and activity stabilization by regulating and controlling the reaction temperature, the stirring rate and the solvent polarity in stages, so that controllable reaction and uniform conversion of fluorine-containing phosphorus substances are ensured. And after the reaction is finished, gradually carrying out cooling crystallization, solid-liquid separation and drying to obtain a high-purity lithium hexafluorophosphate product. Therefore, generation and emission of hydrofluoric acid are remarkably reduced.

This invention belongs to the field of catalytic reaction technology, specifically disclosing a Fischer-Tropsch synthesis catalyst regeneration and carbon dioxide co-production reactor and its co-production process. The reactor includes a Fischer-Tropsch synthesis fixed-bed reactor, a carbon monoxide conversion reaction unit, and a tail gas discharge unit. The Fischer-Tropsch synthesis fixed-bed reactor is filled with a Fischer-Tropsch synthesis catalyst for the Fischer-Tropsch synthesis reaction and catalyst carbon deposition and char regeneration. The carbon monoxide conversion reaction unit is located downstream of the Fischer-Tropsch synthesis fixed-bed reactor and converts the carbon monoxide generated during char regeneration into carbon dioxide. The tail gas discharge unit outputs carbon dioxide-rich gas and removes residual oxygen from the tail gas. By performing in-situ conversion of carbon monoxide during regeneration, this invention can significantly increase the volume fraction of carbon dioxide in the regenerated tail gas and provide a stable feedstock for the downstream carbon dioxide hydrogenation to methanol reaction, thereby achieving synergy between catalyst regeneration and efficient utilization of carbon resources.