175 results about "Hydrogen synthesis" patented technology

The invention relates to a method for regulating and controlling grain sizes of copper and zinc components in a copper-based catalyst through cobalt modification and application of the method, and belongs to the technical field of methanol synthesis through CO2 hydrogenation. Based on the characteristic that oxalic acid forms a complex with metal ions in an ethanol system, the cobalt-modified copper-based catalyst is prepared by adopting an oxalic acid precipitation method. By changing preparation conditions such as cobalt addition amount, precipitation temperature, reaction time and the like, effective control on the specific surface area of the catalyst, grain sizes of copper and zinc components and a copper-zinc synergistic effect is realized, the performance of the catalyst in a reaction for synthesizing methanol through CO2 hydrogenation is remarkably optimized, the CO2 conversion rate and methanol selectivity are improved, and the production cost is reduced. The regulation and control of product selectivity and methanol space-time yield are realized. The catalyst is simple in preparation process, does not introduce impurities, and has a wide application prospect in the field of industrial CO2 resource utilization.

The invention discloses a green method for synthesizing hexamethylenediamine, which comprises the following steps: by taking adiponitrile and ethanol as solvents as raw materials and taking a porous cobalt-based catalyst and a solid base catalyst which are mixed according to a certain ratio as catalysts, reacting to obtain hexamethylenediamine at the reaction temperature of 70-90 DEG C under the reaction pressure of 2-5MPa H2 and the stirring rotating speed of 500-1000rpm. In the hydrogenation process, the two catalysts are mixed and added according to a certain proportion, and efficient conversion of adiponitrile and high selectivity of hexamethylenediamine can be realized under mild conditions. The catalyst used in the method is simple in preparation process, low in cost and easy to recover, the hexamethylenediamine synthesis process is green, and good economic benefits and application prospects are embodied. The method provided by the invention solves the problem that in the traditional process of synthesizing hexamethylenediamine through adiponitrile hydrogenation, inorganic alkali, such as sodium hydroxide, ammonia water and other strong corrosive additives, needs to be added, so that the conversion efficiency and selectivity are improved, the requirement on equipment is reduced, and meanwhile, the energy consumption of later separation is reduced.

The invention discloses a flexible ammonia synthesis system capacity configuration optimization method based on wind-solar combined power generation. Comprising the following steps: constructing a wind-solar hydrogen production coupling ammonia synthesis system; determining flexible boundary parameters of modules for producing hydrogen by electrolyzing water, synthesizing ammonia and the like; building an energy mass flow model of the flexible system under variable working conditions by utilizing dynamic analogue simulation of coupling of water electrolysis hydrogen production and ammonia synthesis; and by taking the minimum leveling production cost as a target parameter, constructing a wind-solar hydrogen production coupling ammonia synthesis system capacity configuration optimization model, and solving a target function to obtain wind-solar installed capacity, energy storage, the scale of hydrogen storage equipment, rated power of an electrolytic bath and ammonia synthesis equipment, and the optimal leveling production cost of ammonia. The universal capacity configuration optimization method of the green ammonia synthesis system for the flexible process is realized, the leveling production cost of the green ammonia is reduced, and the method is suitable for guiding the construction, popularization and application of an actual industrial green ammonia synthesis system.

The invention discloses a method for synthesizing sustainable aviation kerosene through CO2 hydrogenation in biogas. The method comprises the following steps: taking Fe / Mn-CaO as a CO2 adsorption separating agent, taking NiMoGa ternary liquid metal as a catalyst for methane decarbonization hydrogen production, and taking a metal oxide-molecular sieve as a catalyst for synthesizing aryl aviation kerosene through CO2 hydrogenation. According to the metal oxide-molecular sieve catalyst for synthesizing the aromatic sustainable aviation kerosene through CO2 hydrogenation, a metal oxide (ABO3) with a perovskite structure is synthesized through a sol-gel method, and the metal oxide (ABO3) is physically mixed with a molecular sieve; a in ABO3 is lanthanum, and a B element comprises iron, chromium, cobalt or nickel; the molecular sieve contains ZSM-5 (Zeolite Socony Mobil-5), ZSM-11 (Zeolite Socony According to the oxide catalyst disclosed by the invention, a polydentate chelate is formed by metal nitrate and citric acid, and a special perovskite structure can be formed through simple drying and roasting, so that the oxide catalyst has excellent carburization resistance, and a formed oxygen-containing intermediate is diffused into a zeolite molecular sieve to form aromatic aviation kerosene; the preparation of aryl aviation kerosene from bio-based CO2 hydrogenation is realized.

The invention discloses a preparation method and application of a high-performance hexamethylenediamine synthesis catalyst, and belongs to the technical field of new materials. A nickel-based hexabasic alloy is prepared from 10%-30% of Ni, 20%-30% of Fe, 0.5%-3% of Mo, 0.5%-3% of Cr, 0.5%-3% of Mn and 50%-60% of Al through a vacuum melting method, the nickel-based hexabasic alloy is physically crushed into alloy powder, then the porous nickel-based catalyst is prepared through a dealloying method, iron plays a role in reducing the cost, the selectivity is improved through the microelement molybdenum, the mechanical strength is improved through the chromium, and the catalytic activity is improved through the manganese. The catalyst has the characteristics of simple preparation process, low preparation cost and the like, has more excellent reaction activity, target selectivity and stability in the reaction of synthesizing hexamethylenediamine through hydrogenation of adiponitrile compared with an industrial catalyst, and shows good economic benefits and application prospects.

This invention belongs to the field of peak-shaving technology for thermal power units, specifically a deep peak-shaving method for thermal power units that combines electrolytic hydrogen production with ammonia synthesis and energy storage. It integrates an electrolytic hydrogen production with ammonia synthesis and energy storage system, an energy comprehensive utilization system, and a collaborative control system to form a closed-loop peak-shaving system: during off-peak periods, excess electricity from the thermal power unit is collected; during peak periods, the stored ammonia is used to supplement the unit's energy through coal-ammonia co-firing, while oxygen is utilized for oxygen-enriched combustion to enhance peak-shaving and stable combustion capabilities. The synthesized ammonia can also replace purchased ammonia for flue gas denitrification. Through the collaborative control system, the operation of each link is coordinated, achieving efficient energy conversion and precise control. This invention significantly improves the deep peak-shaving and peak-response capabilities of thermal power units, substantially reduces carbon and pollutant emissions, optimizes energy utilization efficiency, extends equipment lifespan, and provides strong support for the green transformation of coal-fired power and the stable operation of new power systems.

The invention discloses a method for preparing three-dimensional graphene foam from organic silicon waste liquid, the three-dimensional graphene foam and application, and the preparation method comprises the following steps: (1) preheating and evaporating the organic silicon waste liquid to obtain organic silicon waste liquid steam, and mixing the organic silicon waste liquid steam with water vapor to obtain organic silicon waste liquid steam; then hydrolyzing in an inert atmosphere with a carrier gas flow rate of 100-1000 sccm, cooling, filtering to obtain synthesis gas, and passing the synthesis gas through an alkaline substance to obtain purified synthesis gas; (2) introducing the purified synthesis gas into a reaction furnace, carrying out a chemical vapor deposition reaction by taking foamed nickel as a substrate to obtain a three-dimensional graphene foam initial product and hydrogen-rich synthesis gas, and then preparing the hydrogen-rich synthesis gas on the surface of the three-dimensional graphene foam initial product according to the dosage per unit area of 0.2-1.0 mL / cm < 2 >, an anisole solution proppant of polymethyl methacrylate with the mass content of 5%-10% is coated, and then the three-dimensional graphene foam is obtained through acid etching. The three-dimensional graphene foam prepared by the method has excellent conductivity, is suitable for the field of functional materials such as electromagnetic shielding materials, and has a good industrial application prospect.

The application relates to a preparation and application of a molybdenum and indium co-modified cobalt-based catalyst for carbon dioxide hydrogenation synthesis of low-carbon alcohol, belonging to the field of catalysis. Co is used as an active component, In and Mo components are introduced, an alkali metal K additive is introduced, an In and Mo co-modified Co-based oxide precursor is created by adopting a sol-gel method, the precursor is reduced by hydrogen, and is further activated by CO2+H2, so that the In and Mo co-modified Co2C catalyst is obtained; the catalyst is used in a reaction of carbon dioxide hydrogenation for preparing low-carbon alcohol, under the condition that the reaction temperature is 340 DEG C and the reaction pressure is 3 MPa, the carbon dioxide conversion rate is more than 35%, and the low-carbon alcohol selectivity is close to 20%.

The present disclosure relates to a kind of renewable energy electrolytic water hydrogen synthesis ammonia system synergic control method and device, the method includes: according to the predicted power generation of target renewable energy electrolytic water hydrogen synthesis ammonia system corresponding, determine its corresponding full-day multi-period simulated hydrogen production power, and full-day multi-period simulated ammonia production power;Real-time monitoring is carried out to target renewable energy electrolytic water hydrogen synthesis ammonia system, determines its corresponding real-time power generation and real-time hydrogen inventory;According to real-time power generation, real-time correction adjustment is carried out to full-day multi-period simulated hydrogen production power, determines full-day multi-period real-time hydrogen production power;According to real-time hydrogen inventory, real-time correction adjustment is carried out to full-day multi-period simulated ammonia production power, determines full-day multi-period real-time ammonia production power.The embodiment of the present disclosure can realize the multi-time scale synergic control optimization of renewable energy electrolytic water hydrogen synthesis ammonia system, reduce the abandonment rate of renewable energy, improve energy utilization and system benefit and stability.

The utility model discloses a hydrogen sulfide synthesis skid-mounted system which comprises a liquid sulfur transfer module, a hydrogen sulfide synthesis module, a product gas pretreatment module, a product gas purification module, a tail gas treatment module and a public engineering module, the liquid sulfur transfer module, the hydrogen sulfide synthesis module, the product gas pretreatment module, the product gas purification module and the tail gas treatment module are sequentially communicated, and the product gas pretreatment module and the product gas purification module are both communicated with the liquid sulfur transfer module. According to the hydrogen sulfide synthesis skid-mounted system disclosed by the utility model, each functional component is modularized, the size of each module is configured in a coordinated manner and meets the transportation condition, corresponding process pipelines, instrument components, cables and the like can be prefabricated and mounted when leaving a factory, and debugging work can be carried out only by simple assembly and construction on a construction site; the workload of a construction site is greatly reduced, waste of installation materials is effectively reduced, and the device has the advantages of being small in occupied area, low in construction cost and the like.

The invention discloses a copper-based catalyst for synthesizing methanol through hydrogenation of carbon dioxide and a preparation method thereof, and relates to the technical field of catalysts, the method comprises the following steps: providing a carrier mixed solution which comprises soluble ferric salt and aluminum salt; providing a precipitant solution, wherein the precipitant solution comprises sodium carbonate and sodium hydroxide; providing an active metal mixed solution, wherein the active metal mixed solution comprises soluble copper salt, soluble zinc salt and soluble metal additive salt; mixing the carrier mixed solution with the precipitant solution to obtain precipitate slurry; aging the precipitation slurry, and sequentially washing, drying and roasting to obtain a carrier; and mixing the carrier with the active metal mixed solution, and drying and roasting the mixture. The catalyst can improve the activation capacity of CO2 and inhibit sintering inactivation of Cu.

The invention discloses a preparation method and application of a hollow spherical high-entropy catalyst with a controllable particle size, a spinel high-entropy oxide is used as a design basis to prepare a base metal high-entropy catalyst with an (ABCDE) 3O4 configuration (five metal components A, B, C, D and E comprise Fe, Co, Ni, Cr and Mn, or four of the five metal components A, B, C, D and E is a combination of any four of Fe, Co, Ni, Cr or Mn, and one of the five metal components A, B, C, D and E is any one of Mg or Zn), can be applied to a catalytic reforming technology to prepare hydrogen-rich synthesis gas, and has excellent catalytic performance on pyrolysis / gasification volatile components of complex components and excellent selectivity on hydrogen. In addition, the catalyst has the characteristics of high temperature resistance, multiple functions, high activity, high selectivity, carbon deposition resistance, long service life and the like, the hydrogen yield can be greatly improved, and stable catalysis can be carried out for an extremely long time.

Processes for preparing synthetic hydrocarbons are disclosed herein. An aspect of the process comprises: electrolyzing a feed stream comprising steam and CO2 with a H2O / CO2 (S / C) molar ratio greater than about 2.0 in a high-temperature co-electrolyzer apparatus operating at a co-electrolyzer temperature to produce an enhanced hydrogen rich syngas having a first concentration of H2, removing at least a portion of H2 from the enhanced hydrogen rich syngas to provide a hydrogen rich syngas having a second concentration of H2 that is lower than the first concentration of H2, and producing at least an FT product stream that comprises synthetic hydrocarbons by reacting the hydrogen rich syngas in a Fischer-Tropsch (FT) reactor. Processes for reducing methane and soot content during production of an enhanced hydrogen rich syngas are also disclosed.

This invention discloses a combined graphite hydrogen chloride synthesis furnace jacket, relating to the field of synthesis furnace technology. The invention includes a graphite hydrogen chloride synthesis furnace body, on which a jacket body is mounted. An adjustment assembly is provided on the surface of the jacket body, including an adjustment box fixedly connected to the outer wall of the jacket body. An inner tube is disposed inside the jacket body. A drive motor is fixedly connected to the top of the inner cavity of the adjustment box, and a rotating rod is fixedly connected to the output end of the drive motor. The invention uses the drive motor to rotate the rotating rod, which in turn rotates a first bevel gear, which in turn rotates a second bevel gear, which in turn rotates a screw. The screw moves a sliding sleeve, which in turn moves the inner tube, adjusting the distance between the inner tube and the outer wall of the graphite hydrogen chloride synthesis furnace body to maintain temperature uniformity.

The invention provides a method for separating and purifying 1,2-cyclohexanediamine from a product synthesized from hexamethylenediamine by hydrogenating adiponitrile. The method comprises the steps of firstly rectifying the product synthesized from hexamethylenediamine by hydrogenating adiponitrile in a lightness removal tower, collecting the obtained bottom liquid, sending it to a refining tower for further rectification, and extracting 1,2-cyclohexanediamine from the top of the refining tower. The method successfully separates and purifies 1,2-cyclohexanediamine from a product synthesized from adiponitrile with complex components and similar physical properties by limiting the theoretical plate number, tower top operating pressure, and tower bottom operating temperature of the lightness removal tower and the theoretical plate number, tower top operating pressure, and tower top operating temperature of the refining tower, thereby effectively improving the product quality and production efficiency of 1,2-cyclohexanediamine.

The application provides a method for carbon dioxide capture and hydrogenation synthesis of methanol based on a eutectic solvent, and belongs to the technical field of carbon capture and utilization. The method comprises the following steps: weighing acetyl guanidine and ethylene glycol according to a proportion, mixing the acetyl guanidine and the ethylene glycol, stirring to prepare a eutectic solvent at a given temperature, capturing carbon dioxide in flue gas by using the eutectic solvent to form a rich liquid, transferring the rich liquid into a high-pressure reaction kettle, adding a catalyst, filling in hydrogen, increasing the temperature to perform a carbon dioxide hydrogenation reaction, filtering to obtain a catalyst and a mixture of the eutectic solvent and methanol after the reaction, and performing flash evaporation on the mixture to obtain product methanol and regenerated eutectic solvent. After capturing carbon dioxide in the flue gas, the method directly performs in-situ carbon dioxide hydrogenation in the absorbent to prepare methanol, avoids problems such as high energy consumption of carbon dioxide desorption, high reaction temperature and low single-pass conversion rate in a traditional gas-solid phase reaction process, and has a simple process and easy regeneration of the eutectic solvent.

The invention belongs to the technical field of automatic ignition of hydrogen chloride synthetic furnaces, and particularly relates to an automatic ignition preparation system and method for a hydrogen chloride synthetic furnace, and the system comprises a hydrogen pipeline control and detection valve group, a chlorine pipeline control and detection valve group, an automatic ignition gun control and detection device, a nitrogen replacement valve group and a synthetic furnace main body process detection device, the DCS control system is connected with the main control system; according to the automatic ignition preparation system for the hydrogen chloride synthetic furnace, a hydrogen pipeline control and detection valve group, a chlorine pipeline control and detection valve group, an automatic ignition gun control and detection device, a nitrogen replacement valve group and a synthetic furnace main body process detection device are integrated, a DCS (Distributed Control System) is matched, and a dual mode of program automatic judgment and manual confirmation is adopted; the safety and the ignition success rate of the automatic ignition process are improved, the process and automation of preparation items before ignition are realized, the explosion accident of the synthetic furnace caused by misoperation of personnel or improper confirmation is effectively avoided, and the production safety is guaranteed.

The invention discloses a method for efficiently and continuously hydrogenating and synthesizing hydrogenated bisphenol A through an ultrasonic-assisted microreactor, and belongs to the technical field of chemical reaction engineering. Aiming at the problems of easy excessive hydrogenation of products and many byproducts caused by slow multiphase mass transfer speed and long reaction time in the hydrogenated bisphenol A synthesis process, the invention adopts an ultrasonic-assisted microreactor technology to further enhance the gas-liquid-solid three-phase mass transfer efficiency, reduce the reaction time and temperature, and improve the yield of hydrogenated bisphenol A. Therefore, high-efficiency hydrogenation is realized under mild conditions, and the product yield and safety are improved. Compared with a common hydrogenation reactor, the method is based on an ultrasonic-assisted microreactor strengthening strategy, the reaction time is shortened to be within 2 minutes, complete conversion of raw materials is achieved, and the product purity is higher than 99%. The method provided by the invention realizes continuous and automatic operation of bisphenol A hydrogenation reaction, has remarkable economical efficiency, green environmental protection property and safety, and is suitable for large-scale industrial production.

The invention provides an electricity-hydrogen-ammonia integrated system scheduling method and system considering thermal inertia of a synthetic ammonia reactor, and relates to the technical field of renewable energy hydrogen production and synthetic ammonia, and the method comprises the following steps: modeling a thermal balance relation of the synthetic ammonia reactor, and constructing a dynamic thermal process model of the synthetic ammonia reactor; wherein the dynamic thermal process model depicts the dynamic association between the temperature response and each factor of feeding airflow and reaction heat release; converting the dynamic thermal process model into a constraint condition of a scheduling level, integrating the constraint condition into a scheduling framework of the electro-hydrogen-ammonia integrated system, and constructing a complete scheduling model by taking the total operation cost of the system as a target function and combining the operation constraint of each unit; and solving by taking the new energy output data as the input of the scheduling model, outputting an optimized production scheduling scheme of the electricity-hydrogen-ammonia integrated system, and performing scheduling operation according to the output optimized production scheduling scheme. According to the scheme, the problem that in an existing scheme, thermal inertia is ignored, so that system reliability and safety performance are low can be solved.

The invention belongs to the technical field of fine chemical engineering, and particularly discloses a method for synthesizing mixed phenylenediamine through hydrogenation of mixed dinitrobenzene. The method comprises the following steps: adding mixed dinitrobenzene, a polar solvent and a catalyst into a jet type supergravity multi-phase reaction device, enabling the mixed dinitrobenzene and the polar solvent to circularly flow in the jet type supergravity multi-phase reaction device in a hydrogen atmosphere, and reacting to obtain mixed phenylenediamine; the jet type supergravity multiphase reaction device comprises an annular reaction kettle, a jet ejector, a supergravity rotary drum, a heat exchanger, a circulating pump, a gas circulating pipeline and an ejector air suction port. The synthetic method of mixed phenylenediamine disclosed by the invention has the characteristics of high mass and heat transfer efficiency, substantial improvement of hydrogenation efficiency, intrinsic safety, greenness and high efficiency, and has a wide industrial application prospect.

The invention provides a method for synthesizing a quinoline compound by catalytic dehydrogenation of a tetrahydroquinoline compound, which comprises the following steps: adding a bivalent palladium catalyst, a Bronsted acid, an additive and an oxidant into an organic solvent, and then adding the tetrahydroquinoline compound for reaction to obtain the quinoline compound, the additive is sodium tetrakis (3, 5-bis (trifluoromethyl) phenyl) borate; the oxidizing agent is tert-butyl hydroperoxide or hydrogen peroxide. According to the method, the quinoline compound can be efficiently synthesized through catalytic dehydrogenation of the tetrahydroquinoline compound, the reaction conditions are mild, operation is easy, the catalyst cost is low, and the method has high substrate functional group tolerance and a wide substrate application range.

This application provides a method for CO2 hydrogenation to olefins, comprising the following steps: adding a CO2 hydrogenation to olefins catalyst to a CO2 hydrogenation to olefins reactor; introducing a reaction gas into the CO2 hydrogenation to olefins reactor to carry out the CO2 hydrogenation to olefins reaction; the reaction gas contains CO2, H2, and C2H4. The catalyst comprises zinc, iron, and sodium elements, wherein, based on the mass of the catalyst, the mass percentage of zinc is 25%–60%, the mass percentage of iron is 35%–70%, and the mass percentage of sodium is 0.01%–5%. The main crystalline phases of the catalyst are α-iron and zinc oxide, and the catalyst also includes sodium ions. The molar ratio of CO2, H2, and C2H4 in the reaction gas is 1:(2–3):x, where x satisfies: 0.09 ≤ x ≤ 1.

The present application belongs to the technical field of solid waste resource utilization, and relates to a method for realizing full-component resource utilization of mineral oil-containing waste and semi-coke through synergistic gasification, comprising the following steps: S1, pyrolyzing the mineral oil-containing waste to obtain high-temperature pyrolysis gas containing tar vapor and volatile components and pyrolysis residues; S2, mixing the high-temperature pyrolysis gas with semi-coke to obtain gas-solid mixture; S3, feeding the gas-solid mixture, the pyrolysis residues and an additive (metallurgical slag and vermiculite compounded at a mass ratio of 3-5:1) into a gasifier for gasification to obtain hydrogen-rich synthesis gas and gasification residues. Through the coupling of pyrolysis-gasification process, the multifunctional integration of "adsorption-carbon source-catalysis" of semi-coke and the synergistic effect of the compounded additive, full-component resource utilization is realized. The H2 concentration in the obtained synthesis gas reaches 60%-65%, the H2 yield is as high as 1000 ml / g-mineral oil-containing waste dry basis, the carbon conversion rate is greater than or equal to 95%, and the gasification residues can be directly used for roadbed materials, realizing waste treatment with waste and high-value recycling.

The invention provides a Pt-Co / ZnO catalyst, a preparation method and application thereof, and a method for synthesizing alcohol from carbon dioxide, the catalyst contains a carrier, an active component and an auxiliary agent, the carrier is a ZnO nanorod, the active component comprises Co, the auxiliary agent comprises Pt, the ZnO nanorod in the catalyst is in a hexagonal crystal form, and the auxiliary agent comprises Pt. Co epitaxially grows on the {100} crystal face of the ZnO nanorod to form a coating layer. The Pt-Co / ZnO catalyst with a clear structure is synthesized by utilizing lattice matching, and has good hydrogenation activity, for example, in a reaction for synthesizing alcohol through carbon dioxide hydrogenation, when the air speed is 6L. Gcat <-1 >. H <-1 >, the pressure is 2MPa, the activation temperature is 250 DEG C and the reaction temperature is 300 DEG C, the CO2 conversion rate can reach 20.1%, and the STY value of the alcohol is 5.6 mmol.gcat <-1 >. H <-1 >.

This invention discloses a catalyst and method for the continuous synthesis of formamide from ammonium carbonate or ammonium bicarbonate, belonging to the field of chemical technology. The catalyst is a boron-nitrogen co-doped activated carbon supported palladium catalyst prepared by using a palladium precursor, boric acid, and nitrogen-doped activated carbon. The method uses ammonium carbonate solution or ammonium bicarbonate solution as raw material, and in a continuous flow reactor, the above-mentioned catalyst catalyzes the hydrogenation of ammonium carbonate or ammonium bicarbonate to synthesize formate. The formate is then dehydrated to obtain formamide. The catalyst of this invention has advantages such as high activity and high stability, and can efficiently and stably produce ammonium formate in a continuous flow reactor, which can then be further dehydrated to obtain formamide, thus providing a green, low-carbon, and safe method for the synthesis of formamide.

The invention discloses a layered operation control method and system for a biogas production, storage and utilization integrated system. The method comprises the following steps: acquiring a system operation state and external environment information; constructing a monthly-level planning layer, optimizing a cross-seasonal gas storage target based on long-term prediction, and considering anaerobic fermentation slow process dynamics; a hour-level scheduling layer is constructed, a hydrogen production and power generation plan is made by adopting model prediction control based on short-term prediction, and biosynthetic hydrogen injection rate change rate punishment is introduced; a minute-level real-time control layer is constructed, a rolling tracking plan is predicted based on an ultra-short term, and a quick response loop is designed to meet sudden green power consumption, peak regulation and frequency modulation requirements; and feeding back the real-time operation data to an upper layer to carry out model parameter self-adaptive updating. According to the method, multi-scale prediction information is fused, fast and slow processes are coordinated, efficient green power consumption and flexible power grid support are realized, and the method can be widely applied to optimized operation control of a biological natural gas preparation and storage system.

The invention relates to the technical field of energy conversion and environment, in particular to a coal hydrogen-rich synthesis gas and raw coal upgrading system and method based on iron ore particles. The system comprises: a chemical looping gasification unit, which is used for producing hydrogen-rich gas through a reaction of an iron ore oxygen carrier in an oxidation state with clean coal in a reactor; wherein the iron ore oxygen carrier in the oxidation state plays roles in catalytic oxidation and synthesis gas quality adjustment, and after the iron ore oxygen carrier is changed into the reduction state, the iron ore oxygen carrier is regenerated into the oxidation state through oxidation reaction with air in the reactor; the inactivated oxygen carrier treatment unit is used for crushing and screening the inactivated oxygen carrier in the reactor to obtain a dense medium; and the separation fluidized bed unit is used for separating the coal particles through a two-phase flow formed by fluidizing gas and a dense medium so as to separate clean coal and tailings. According to the method, full-process and efficient utilization of the cheap iron ore particles is achieved, and quality improvement and ash reduction of the coal are achieved while the gasification efficiency is improved.

The application discloses a carbon dioxide hydrogenation synthesis methanol system and method, relates to the technical field of methanol synthesis, and comprises a PEM electrolysis hydrogen production unit, a hydrogen pressure reducing valve, a direct air carbon capture unit, a carbon dioxide pressure reducing valve, a first buffer tank, a pressure increasing unit, a second buffer tank and a reaction unit. The hydrogen output end of the PEM electrolysis hydrogen production unit is connected with the input end of the hydrogen pressure reducing valve, the output end of the hydrogen pressure reducing valve is connected with the inlet of the first buffer tank, the carbon dioxide output end of the direct air carbon capture unit is connected with the input end of the carbon dioxide pressure reducing valve, the output end of the carbon dioxide pressure reducing valve is connected with the inlet of the first buffer tank, the outlet of the first buffer tank is connected with the input end of the pressure increasing unit, the output end of the pressure increasing unit is connected with the inlet of the second buffer tank, and the outlet of the second buffer tank is connected with the reaction unit. The application can realize the cooperation of stable pressure of a gas source, uniform mixing, efficient pressure increasing and stable reaction, reduces equipment investment and energy consumption, and is suitable for a green electricity driven operation scene.

The invention relates to a preparation process of a bifunctional Ru / C catalyst applied to coupling thermocatalytic methanol dehydrogenation and electrocatalytic hydroxidation reaction, belonging to the technical field of methanol hydrogen production. TDI industrial waste residue is used as a raw material, and through the links of pyrolysis activation, supercritical methanol modification, bimetal freezing loading, activation, interface bonding construction, hydrophobic layer coating and the like, the Ru / C catalyst is prepared. The catalyst solves the problems that an existing Ru / C catalyst is sensitive to CO poisoning, easy to sinter at a high temperature, high in component and the like, the Ru utilization rate is high, the activity attenuation is reduced after long-time operation, the components are effectively reduced, and the catalyst is suitable for the process requirements of methanol hydrogen production-synthesis gas co-production.

The application provides a method for synthesizing ethanol and liquid hydrocarbon by CO2 hydrogenation and an iron-based catalyst thereof, and the method comprises the following steps: taking carbon dioxide and hydrogen as raw materials, and under the conditions of 250-330 DEG C, 3-5 MPa and the presence of a catalyst, ethanol and liquid hydrocarbon are generated by reaction; the catalyst is a supported iron-based catalyst, the active phase composition of the catalyst comprises Fe, Fe3O4, Fe7C3 and Fe5C2, the liquid hydrocarbon is a hydrocarbon with carbon number greater than or equal to 5, and the volume ratio of the carbon dioxide to the hydrogen is 1:2-1:5. Based on the single system iron-based catalyst, the carbon dioxide can be converted into high value-added ethanol and liquid hydrocarbon products by one-step hydrogenation, the CO2 conversion rate is greater than 40%, the total selectivity of ethanol+liquid hydrocarbon is greater than 50%, and the selectivity of CO by-product is less than 10%.