215 results about "Hydrogen synthesis" patented technology

The invention discloses a catalyst for synthesizing low-carbon olefin through CO2 hydrogenation reaction as well as preparation and application of the catalyst. The catalyst comprises an active component A and a core-shell structure B (at) C, wherein the active component A is a metal oxide with catalytic activity for synthesizing low-carbon olefin through a CO2 hydrogenation reaction; in the core-shell structure B (at) C, B is an SAPO molecular sieve, and C is selected from one or more of B2O3, SiO2, Al2O3, TiO2, ZrO2, kaolin and montmorillonite. The catalyst is used for synthesizing low-carbon olefin through CO2 hydrogenation, and can obviously improve the CO2 conversion efficiency and reduce the CO selectivity.

The invention relates to the technical field of smelting, in particular to a preparation method of direct reduction iron. The preparation method of the direct reduced iron comprises the following steps: by taking high-temperature and high-pressure hydrogen-rich synthesis gas generated by gasifying a biomass raw material as reducing gas, reducing pellets containing medium-low-grade iron ores to obtain the direct reduced iron, the high-temperature and high-pressure hydrogen-rich synthesis gas comprises H2 and CO; when the molar fraction of H2 is 50% < = XH2lt; when the content is 65% and the molar fraction of CO is 30%-45%, the reduction reaction temperature is 900-950 DEG C; when the molar fraction of H2 is 65% < = XH2lt; when the molar fraction of CO is 90% and the molar fraction of CO is 5%-30%, the reduction reaction temperature is 850-900 DEG C; when the molar fraction XH2 of H2 is greater than or equal to 90%, the reduction reaction temperature is 800-850 DEG C; the method can realize direct reduction of hydrogen groups of medium-low-grade iron ores, and is low in energy consumption and less in carbon emission.

The invention discloses an energy storage configuration method and device for a renewable energy power generation and hydrogen production synthesis ammonia system, and the method comprises the steps: carrying out the modeling of each workshop section of the renewable energy power generation and hydrogen production synthesis ammonia system, and obtaining a workshop section model of each workshop section; determining a target function of the renewable energy power generation hydrogen production ammonia synthesis system; determining renewable energy power demand flexibility and energy supply flexibility of the renewable energy power generation hydrogen production synthesis ammonia system; determining the initial state of the renewable energy power generation hydrogen production synthesis ammonia system by utilizing the renewable energy power demand flexibility and the energy supply flexibility; and analyzing the flexibility of the renewable energy power generation and hydrogen production synthesis ammonia system in each interval based on the initial state, and configuring an energy storage device of the renewable energy power generation and hydrogen production synthesis ammonia system based on the analysis result of the flexibility. According to the method and the device, the evaluation precision of flexibility evaluation of the P2A system is improved, and the accuracy and the reliability of energy storage configuration are further improved.

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 synthesis method of a bifunctional MeOx / AZE catalyst and application of the bifunctional MeOx / AZE catalyst in catalyzing CO2 hydrogenation to synthesize high-density aviation fuel, MeOx in the catalyst is a composite metal oxide of metal Zr and auxiliary metal M, the content of Zr in the metal is 75.0-95.0 mol%, and the content of the auxiliary metal M is 5.0-25.0 mol%; the auxiliary metal M is one or more of Zn, Ga, Ce, La and In; aZE is an acidic molecular sieve. The synthesized catalyst shows excellent CO2 hydrogenation coupling performance, the polycyclic aromatic hydrocarbon is introduced in the CO2 hydrogenation reaction for functional coupling reaction, the conversion of CO2 is promoted, the coupling reaction with the polycyclic aromatic hydrocarbon is carried out, the alkyl-substituted polycyclic hydrocarbon compound is synthesized, the difficulty that high-density aviation fuel components cannot be synthesized through single CO2 hydrogenation is overcome, and the synthesis efficiency is improved. And the selectivity of the high-density aviation fuel component alkyl polycyclic hydrocarbon product with excellent performance is enhanced.

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.

A process for producing hydrogen comprising the steps of reforming a hydrocarbon feedstock to form a synthesis gas; subjecting the synthesis gas to one or more stages of water gas shift to convert carbon monoxide to carbon dioxide and form a hydrogen-enriched synthesis gas; and treating the hydrogen-enriched synthesis gas to form a purified hydrogen product and tail gas stream containing methane, wherein at least a portion of the tail gas stream is treated by subjecting it to partial oxidation or autothermal reforming to form a partially-oxidised or reformed tail gas, followed by of water gas shift of the partially-oxidised or reformed tail gas to form a hydrogen-enriched tail gas, and a step of carbon dioxide removal from the hydrogen-enriched tail gas to form a hydrogen stream and a carbon dioxide stream, wherein the carbon dioxide stream is recovered and a portion of the hydrogen stream is a fuel.

The present invention relates to a production process for synthesizing hexamethylenediamine by catalytic hydrogenation of adiponitrile. The process comprises the following steps: 1) preparing a catalyst precursor; 2) calcining the catalyst precursor to obtain a catalyst; 3) catalytic hydrogenation of adiponitrile under the condition of the catalyst to synthesize crude hexamethylenediamine; 4) separating hexamethylenediamine from the discharge of a fluidized bed reactor containing crude hexamethylenediamine. The present invention uses Ni(NO3)2 and / or Mg(NO3)2 as main raw materials, doped with transition metal oxides, and then performs ultrasonic adsorption using Al2O3 as a catalyst carrier to load Ni(NO3)2 and / or Mg(NO3)2 and transition metal oxides on Al2O3, and obtains a catalyst through high-temperature calcination. The doping of transition metal oxides can improve the basicity of the catalyst, eliminating the need to add a strong basic co-catalyst in the catalytic reaction stage, reducing by-product formation. Moreover, it increases the specific surface area of the catalyst, thereby reducing the adsorption of the reaction product hexamethylenediamine on the catalyst, extending the service life of the catalyst, and saving the energy consumption for catalyst regeneration.

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 invention discloses a method for directionally regulating and controlling distribution of a 5-hydroxymethylfurfural hydrogenation product by using an activated carbon supported bimetallic catalyst, and belongs to the technical field of biomass catalytic conversion. According to the method, the activated carbon loaded bimetallic catalyst, the 5-hydroxymethylfurfural and the reaction solvent are mixed and then subjected to hydrogenation reaction, and directional regulation and control of distribution of the 5-hydroxymethylfurfural hydrogenation product are realized by controlling the reaction solvent to be a polar aprotic solvent or a polar protic solvent. The prepared activated carbon supported bimetallic catalyst can selectively catalyze 5-hydroxymethylfurfural in a polar aprotic solvent / protic solvent to synthesize a furan chemical with a high added value through hydrogenation, the 5-hydroxymethylfurfural can be efficiently catalyzed in a polar aprotic solvent system to synthesize 2, 5-furandimethanol, the selectivity can reach 97.1%, and the selectivity can reach 97.1%. And in a polar protic solvent system, hydrogenation synthesis of 2, 5-dimethylfuran from 5-hydroxymethylfurfural can be realized, and the selectivity is as high as 99.5%.

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 present invention discloses an application of a copper catalyst in the electrocatalytic selective hydrogenation of the cyano group of nitrile organic compounds to prepare primary amines. In this application, the highly selective hydrogenation of the terminal cyano group of nitrile organic compounds to synthesize primary amine organic compounds is realized under an electrochemical system. This method has the characteristics of low cost of the required catalyst, stable performance, mild conditions for hydrogenating to prepare primary amines, simple operation, environmental protection, etc., and has good application prospects.

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.

The embodiment of the invention discloses a chlorine-alkali industry multi-mode hydrogen production and hydrogen chloride synthesis system and method.The chlorine-alkali industry multi-mode hydrogen production and hydrogen chloride synthesis system comprises a grid power supply module, a distributed photovoltaic module, a PEM hydrogen production module and a hydrogen chloride synthesis module; the PEM hydrogen production module comprises a PEM electrolytic bath, a cooling device and a heating device; the grid power supply module and the distributed photovoltaic module are connected with the power supply end of the PEM electrolytic cell; the rear end of the PEM electrolytic bath is connected with the first input end of the cooling device; the first output end of the cooling device is connected with the first input end of the heating device, and the first output end of the heating device is connected with the front end of the PEM electrolytic bath; the second input end of the heating device is connected with the distributed photovoltaic module, and the second output end of the heating device outputs hot water; the technical effects of adjusting the working temperature of the PEM electrolytic bath and repeatedly utilizing the high-temperature circulating pure water are achieved, and the energy utilization efficiency is improved.

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 discloses a nickel-cobalt bimetallic nanoparticle material for synthesizing tetrahydrofurfuryl alcohol through full hydrogenation as well as a preparation method and application of the nickel-cobalt bimetallic nanoparticle material. The method comprises the following steps: dissolving nickel acetate tetrahydrate and cobalt acetate tetrahydrate in absolute ethyl alcohol, carrying out ultrasonic treatment, adding an ethanol solution in which polyvinylpyrrolidone is dissolved, carrying out ultrasonic treatment, putting into a preheated oil bath pan, standing, refluxing, centrifuging, and taking precipitate, so as to obtain NiCo-precursor; the preparation method comprises the following steps: adding NiCo-precursor and dopamine hydrochloride into an ethanol solution of tris (hydroxymethyl) aminomethane, putting into an oil bath pan, uniformly stirring, centrifuging, washing and drying to obtain NiCo (at) PDA; and calcining in an inert atmosphere to obtain the catalyst. The nickel-cobalt bimetallic nanoparticle material is simple in preparation process, mild in reaction condition, high in catalyst activity, easy to separate and good in cycling stability, and is expected to show good application potential in industrial application.