3389results about "Energy input" patented technology

A process system and process method for treating hydrogen sulfide-containing acid gas. The process system comprises a sulfur recovery unit, a tail gas treatment unit having an acid gas concentration function, and a flue gas alkaline scrubbing unit. The method comprises: subjecting sulfur-containing tail gas to concentration treatment by means of an absorption column (1) of the tail gas treatment unit, and then introducing same into the sulfur recovery unit to undergo a Claus reaction for separation, so as to obtain sulfur and sulfur recovery tail gas; introducing the sulfur recovery tail gas into the tail gas treatment unit, successively carrying out combustion and hydrotreating, and introducing the obtained gas into the absorption column (1) of the tail gas treatment unit; and in the tail gas treatment unit, introducing gas absorbed by the absorption column (1) into the flue gas alkaline scrubbing unit, and successively carrying out incineration and alkaline scrubbing, so as to discharge desulfurized gas. The content of SO2 in the tail gas treated by the process system is ≤50 mg / Nm3, and the requirements for full-period standard reaching of sulfur dioxide emission of tail gas during startup, shutdown and normal operations can be satisfied.

The invention relates to an optimization method of an alkaline water electrolysis hydrogen production system based on multi-parameter cooperative control. The method comprises the following steps: acquiring real-time power and historical output data of renewable energy sources, environmental parameters and operation data of an electrolytic cell, and preprocessing the real-time power and historical output data, environmental parameters and operation data of the electrolytic cell; constructing a fusion renewable energy fluctuation prediction model, and inputting historical output data, environmental parameters and electrolytic cell operation data into the model to predict renewable energy fluctuation characteristics; establishing a wind-light output prediction model, and determining an optimal current density interval based on the real-time power of the renewable energy and the wind-light output prediction model; correcting the real-time electrolyte concentration by adopting a conductivity-pH dual channel, constructing a concentration-current two-dimensional compensation model, and inputting the corrected real-time electrolyte concentration into the model to obtain a target electrolyte concentration; and dynamically adjusting related parameters of the hydrogen production system, calculating a self-adaptive threshold value of the system, determining a grading response threshold value based on the self-adaptive threshold value, and controlling the hydrogen production system to operate. And high-efficiency hydrogen production and stable operation of the system are realized.

The invention relates to the technical field of hydrogen energy, and discloses an auxiliary-machine-free solid oxide electrolytic hydrogen production system and an auxiliary coal electricity deep adjustment method, the hydrogen production system comprises an SOE heat box system for electrolytic hydrogen production, a hydrogen circulation subsystem and a hydrogen storage subsystem; the ejector is driven by external heat source steam, part of hydrogen at an outlet of the SOE heat box system is ejected to a low-pressure suction inlet of the ejector through the hydrogen circulation subsystem, and formed reducing mixed gas of steam and hydrogen enters a cathode inlet of the SOE heat box system. The system is driven by an external heat source and operates in an internal stack heating mode, so that the power consumption of the electrolytic hydrogen production system is reduced; by adopting the modes of external material supply, cathode ejector material self-circulation and multi-stream heat exchange, a complex cold and hot auxiliary machine of a traditional solid oxide electrolytic hydrogen production system is omitted, the structure is simple, and the system compactness is greatly improved; electric power-steam-air-condensed water flow coupling is established with a coal-fired power plant, and efficient, flexible and deep peak shaving is adjusted in combination with steam extraction multi-stage adjustment.

According to the invention, biomass rice hull ash and a sodium hydroxide solution are reacted to obtain water glass and carbon mud. And reacting the water glass with CO2 generated by calcining the limestone to produce a white carbon black product and a mixed waste liquid of sodium carbonate and sodium bicarbonate. Meanwhile, quick lime obtained by calcining limestone is digested and then reacts with sodium carbonate and sodium bicarbonate mixed waste liquid to generate a light calcium carbonate product and dilute sodium hydroxide waste liquid. And finally, the dilute sodium hydroxide waste liquid is concentrated and reused for water glass production, so that the waste liquid is recycled, and a complete process closed loop is formed. According to the process method disclosed by the invention, two leading-edge innovative processes, namely production of white carbon black by renewable resource biomass rice hull ash and production of white carbon black by a carbonization method, are organically combined and are coupled with production of light calcium carbonate by a limestone calcination process, so that the problem that a large amount of sodium sulfate-containing wastewater is discharged in a traditional process is solved; meanwhile, the carbon footprint of white carbon black and calcium carbonate products is greatly reduced.

The present invention relates to a system, apparatus, and method for the dual-purpose functionality of capturing carbon dioxide (CO2) from atmospheric and flue gas sources and concurrently generating electrical energy. More specifically, this patent application focuses exclusively on the non-ionized hydrogen gas turbine variant of the apparatuses and methods for capturing carbon dioxide and electrical energy generating system invention. The invention embodies an integrated system designed for the efficient capture of CO2 and simultaneous production of clean electricity. To simultaneously generate electric power at maximum efficiency and capture carbon dioxide, the present invention comprises different integrated processes, integrated systems, and techniques. The present system comprises; a non-ionized hydrogen gas turbine system unit, a carbon dioxide capturing system unit, a hybrid solar Hydrogen-Oxygen gas generator system system unit and waste heat recovery system unit. Moreover, the system comprises waste-heat-based carbon dioxide absorption and waste-heat-based regeneration sub-units to power carbon dioxide capturing parts by waste heat. All the systems of units are developed, integrated, hybrid, and co-functionally working to simultaneously enhance both CO2 capture efficiency and electricity generation. Through these integrated processes, systems, and techniques, the invention aims to generate and maximize clean electrical power output while effectively capture CO2 and reducing CO2 emission impacts on the environment with a dual solution approach. The invention further includes various alternative embodiments, and invention versions for versatile application in CO2 capture and energy production fields.

The invention discloses an optimal control system of a multi-class coupling hydrogen production system based on wind-solar complementation, and relates to the technical field of industrial hydrogen production, an energy source module of the system monitors external environment data in real time, generates a first data set, provides key wind energy and solar energy information for the system, facilitates energy supply prediction, and improves the energy utilization rate. The wind-solar cooperative control module carries out complementary adjustment according to the first data set, the power output efficiency is maximized, the energy utilization rate is further improved, and therefore the overall performance of the hydrogen production system is improved; the electrolytic hydrogen production data acquisition module monitors electrolytic state data in real time, establishes an energy data set, provides key parameters in the electrolytic hydrogen production process for the system, and is beneficial to comprehensively understanding the state of an electrolyzer. The supply fluctuation analysis module obtains a supply evaluation index Gyzs through feature extraction and machine learning calculation, deep analysis of the supply condition is achieved, and a basis for intelligent decision making is provided for the system.

The present invention relates to a device for the mechano-chemical activation of a moist starting material, the device comprising a drying device 10 and a mill 20, the drying device 10 and the mill 20 being connected for transferring the material dried in the drying device 10, the mill 20 and the drying device 10 being connected for transferring the waste heat of the mill 20 to the drying device 10.

The invention discloses a production method for preparing a potassium humate fertilizer through continuous high-pressure hydrothermal reaction of potassium feldspar, and relates to a wet grinding pulping process, a hydrothermal reaction process, a flash evaporation filter pressing process, a humic acid modified potassium fertilizer preparation process and a causticization and humic acid modified silicon-calcium fertilizer preparation process. The preparation method comprises the following steps: firstly, carrying out high-pressure tubular hydrothermal reaction and tower-type delayed reaction on potassium feldspar alkaline ore pulp prepared by fine grinding to prepare potassium aluminosilicate and calcium silicate, mixing alkaline potassium aluminosilicate filter residues obtained by filtering with humic acid, modifying, granulating and drying to obtain a humic acid coated long-acting slow-release potassium fertilizer product. The alkaline calcium silicate filtrate and lime are subjected to a causticization reaction to obtain a KOH solution, the KOH solution is returned to a wet pulping process to be recycled, and the alkaline calcium silicate and the humic acid are mixed, modified, granulated and dried to produce the humic acid coated long-acting slow-release silicon-calcium fertilizer product.

The invention provides a P-type AgBi Se2 thermoelectric material and a preparation method thereof, and relates to the technical field of thermoelectric materials. According to the P-type AgBi Se2 thermoelectric material and the preparation method thereof, the chemical composition of a compound of the P-type AgBi Se2-based thermoelectric material is AgBi (1-x) MnxSe2, 0lt, xlt; and 0.7, the compound is a P-type thermoelectric material. The AgBi Se2-based thermoelectric material with P-type conductivity in a room temperature region is prepared by doping Mn element at the position of B element in a displacement manner and combining melting with a spark plasma sintering technology, and Mn atoms replace B lattice feeding points in a solid solution doping manner to cause mass and stress field changes, so that the lattice heat conductivity is further reduced, and the room temperature Seebeck coefficient of AgB Se2 can be changed from negative to positive. The increase of the doping amount of the manganese element can cause the improvement of the carrier concentration, and the power factor is remarkably improved, so that the ZT value of the P-type thermoelectric material in the room temperature region is remarkably improved, and the room temperature thermoelectric performance of the material is further improved. The invention is used for the P-type AgBi Se2 semiconductor material and the preparation method thereof.

The invention relates to a non-equimolar-ratio high-entropy thermoelectric ceramic and a preparation method thereof. The chemical formula of the non-equimolar-ratio high-entropy thermoelectric ceramic is (Ca1 / 3Sr1 / 3Ba1 / 3) 1-xLaxTiO3 (x = 0.1-0.4). Through presintering, spark plasma sintering and reduction annealing processes, a single-phase perovskite structure composed of phases of the A-site high-entropy perovskite thermoelectric ceramic is obtained, equiaxed crystal grains are arranged in the ceramic, and the morphology of the equiaxed crystal grains is matched with that of cubic perovskite structure crystal grains. Elements Ca, Sr, Ba, La, Ti and O in the ceramic are uniformly distributed in the ceramic, and no agglomeration phenomenon exists. The A-bit non-equimolar-ratio high-entropy perovskite thermoelectric ceramic (Ca1 / 3Sr1 / 3Ba1 / 3) 1-xLaxTiO3 obtained by the invention has low thermal conductivity, high conductivity and Seebeck coefficient, further shows a high thermoelectric ZT figure of merit, is simple to operate and short in time period, and provides an effective path for preparing high-temperature thermoelectric materials.

The invention relates to an automatic temperature control type concentration device for an industrial biological enzyme preparation, in particular to the technical field of enzyme preparation purification devices. The technical problem that a heating plate cannot conduct targeted heating on the position where enzyme-containing liquid is located is solved. Comprising a support, a heating shell is slidably connected to the interior of the support, a liquid storage tank is fixedly connected to the interior of the heating shell, a hot air pump is installed on the support, the hot air pump is fixedly connected with a first air conveying pipe, the first air conveying pipe is fixedly connected and communicated with the heating shell, and a sealing ring is slidably connected to the interior of the heating shell in a sealed mode. The sealing ring is connected with the outer side of the liquid storage tank in a sealed and sliding mode. The position of the sealing ring is changed along with the change of the liquid level of the stock solution in the liquid storage tank, so that the volume of hot air stored between the heating shell and the liquid storage tank is changed, the heating position of the liquid storage tank is further changed, the volume of the stock solution in the liquid storage tank is heated, and waste of the hot air is avoided.

The invention relates to a method for synthesizing a high-value product by using refinery furnace gas, which comprises the following steps: purifying refinery crude furnace gas, feeding the purified refinery crude furnace gas into a chemical looping three-stage normal-pressure reactor, respectively obtaining near-pure carbon dioxide, nitrogen and hydrogen products in each stage of flow, and adjusting a gas framework by using the near-pure hydrogen product obtained by reforming coke oven gas as a supplementary hydrogen source, after reaching the standard of the mixed raw material, pressurizing and feeding into a synthesizer, and carrying out gas-liquid separation to obtain a methanol or ammonia product. The method solves the problem that carbon dioxide and nitrogen cannot be utilized when the traditional refinery furnace gas replaces coal-based carbon monoxide to synthesize high-value products through chemical carbonylation; part of coke oven process tail end product coke oven gas is consumed, and the defect that a cheap hydrogen source needs to be supplemented due to unmatched raw material structures in the technological process is overcome; and the tail gas and low-grade heat recycling process in each stage of production process is also optimized, and near-zero emission in the life cycle and gradient utilization of chemical energy are realized.

The invention discloses an electricity ammonia heat multi-energy conversion system adapting to offshore wind power fluctuation and a control method of the electricity ammonia heat multi-energy conversion system. The electric ammonia heat multi-energy conversion system comprises a green hydrogen preparation system, a green ammonia synthesis system, a green ammonia power generation system and a green ammonia heat supply system, the electric ammonia heat multi-energy conversion system is controlled by adopting the wind power absorption module and the power generation heat supply module. According to the invention, offshore wind power is utilized to prepare green hydrogen and synthesize green ammonia, offshore new energy consumption and medium-and-long-term storage of electric power are realized, low-cost long-distance flexible transportation of energy is realized through a liquid ammonia mode, the problem of storage and transportation of hydrogen energy is solved, and the construction investment of offshore transmission channels is reduced; energy supply diversification can be achieved through green ammonia power generation and green ammonia heat supply; meanwhile, through the unique control method, the method can effectively adapt to the strong volatility of offshore wind power, and economical and efficient preparation and diversified utilization of the green ammonia are achieved.

The invention provides a sulfur recovery method and system suitable for a crushed coal pressure gasification technology, the system comprises an acid gas pretreatment unit, a sulfur recovery unit and a desulfurization unit, the acid gas pretreatment unit comprises a washing tower, an absorption tower and a regeneration tower which are arranged in sequence, the method comprises the following steps of: washing low-temperature methanol washing acid gas in a washing tower to remove quantitative ammonia gas and methanol, performing countercurrent contact absorption on the low-temperature methanol washing acid gas and amine liquid to separate heavy hydrocarbon and take away a part of # imgabs 0 #, absorbing # imgabs 1 # and the other part of # imgabs 2 # in the acid gas by the amine liquid, feeding into a regeneration tower to separate out pretreated acid gas containing # imgabs 3 # and concentrated # imgabs 4 #, and feeding into a sulfur recovery unit to recover liquid sulfur, and the generated tail gas is sent into a desulfurization unit to be treated and then discharged. Therefore, the low-temperature methanol washing acid gas with complex components is treated, and the long-period stable operation of the sulfur recovery process is ensured.

The invention provides a p-type AgSbSe2-based thermoelectric material with low thermal conductivity and a preparation method and application thereof, the chemical composition of the p-type AgSbSe2-based thermoelectric material with low thermal conductivity is Ag1 + ySb1-x-yBixSe2, x is more than 0 and less than or equal to 0.09, y is more than or equal to 0.01 and less than or equal to 0.02, and x and y are the ratio of the amount of substance. The preparation method of the thermoelectric material comprises the following steps: performing vacuum tube sealing on Ag particles, Bi particles, Sb particles and Se particles according to the mass ratio, sintering the sealed quartz tube in a muffle furnace, and cooling to obtain an alloy ingot; and grinding the alloy ingot to obtain powder, and sintering the powder to obtain the p-type AgSbSe2-based thermoelectric material. The p-type AgSbSe2-based thermoelectric material with low thermal conductivity has good conductivity and Zebeck coefficient, and low lattice thermal conductivity at low temperature, and the thermoelectric performance of the thermoelectric material is significantly improved.

The invention discloses a new energy, hydrogen production and decarburization coupling heat storage system and a control method. The system comprises a new energy power unit, an electrolytic hydrogen production unit, a hydrogen storage unit, an industrial decarburization unit and a heat storage unit. New energy electric power is used for electrolytic hydrogen production and industrial decarburization, and residual electric energy is converted into heat energy to be stored; heat generated in the electrolytic hydrogen production process and the hydrogen storage process is conveyed to the heat storage unit; the heat storage unit provides hydrogen release heat for the hydrogen storage unit and provides adsorbent regeneration heat for the industrial decarburization unit. According to the control method, system operation is divided into an energy storage mode, a balance mode and an energy release mode by collecting system operation data in real time, heat energy distribution of a heat storage unit is dynamically adjusted based on a fuzzy PID algorithm, and rapid heat self-consistent response of a hydrogen storage unit, stable regenerative heat supply of a decarburization unit and efficient consumption of new energy power are achieved. Through multi-unit coupling and heat energy gradient utilization, the overall energy utilization efficiency of the system is improved.

The invention discloses an in-situ pyrolysis system and method for heating oil-rich coal through slow oxidation of semicoke, the in-situ pyrolysis system comprises a pyrolysis semicoke block and an oil-rich coal block which are adjacent to each other, a pyrolysis injection well and a pyrolysis output well are excavated in the oil-rich coal block, and the semicoke block is formed after the oil-rich coal block is pyrolyzed; converting the pyrolysis injection well and the pyrolysis output well into a slow oxidation injection well and a slow oxidation output well; waste heat of a pyrolytic semi-coke stratum and slow oxidation heat release are used for a pyrolytic reaction of a subsequent coal seam, through combined operation of adjacent plots, heat and material resources of a semi-coke layer are fully utilized, effective development of pyrolytic semi-coke is achieved, meanwhile, a new feasible in-situ heating way is provided, oil-rich coal resources are comprehensively utilized, and the economic benefit is improved. External heat energy does not need to be additionally injected, and remarkable economic advantages are achieved; cO2 generated by slow oxidation of the semicoke and combustion power generation of oil-rich coal pyrolysis product gas is sealed and stored in a pyrolysis semicoke block, carbon emission reduction is effectively achieved, and the method has remarkable environmental advantages.

The invention relates to a resource utilization method and system of petroleum coke, and belongs to the technical field of petroleum fractions. The utilization method comprises the following steps: calcining the first part of petroleum coke to obtain high-temperature flue gas and calcined coke; pyrolyzing the second part of petroleum coke by taking the high-temperature flue gas as a heat source to obtain pyrolytic coke, pyrolytic gas and low-temperature flue gas; mixing the pyrolytic coke with the first part of petroleum coke, and calcining; condensing the pyrolysis gas to obtain tar; preparing a prebaked anode by taking low-temperature flue gas as a heat source and taking calcined coke, coal pitch and tar as raw materials through hot press molding; and by taking the condensed pyrolysis gas as a fuel, roasting the hot-press molded prebaked anode to obtain a prebaked anode product. High-temperature flue gas generated by calcining the first part of petroleum coke is used for pyrolyzing the second part of petroleum coke; and the residual gas phase after condensation of pyrolysis gas generated by pyrolysis is used for the roasting process of the prebaked anode. And multi-link utilization of petroleum coke, high-temperature flue gas and pyrolysis gas is achieved, and the energy-saving effect is achieved.

The invention relates to the technical field of hydrogen energy, in particular to a solid oxide electrolytic hydrogen production system and a control method thereof.The electrolytic hydrogen production system comprises water, a waste heat recovery module, a fused salt phase change energy storage module and a solid oxide electrolytic tank, and the waste heat recovery module comprises a water preheater and a steam heater; product gas generated by the solid oxide electrolytic tank passes through the water preheater and the steam heater in sequence; the fused salt phase change energy storage module comprises a fused salt reactor heat release device and a phase change energy storage fused salt reactor for providing heat for the fused salt reactor heat release device; after being powered by the water pump, water sequentially passes through the water preheater, the molten salt pile heat release device and the steam heater to absorb heat, is converted into water vapor and then flows to the solid oxide electrolytic tank; the fused salt phase-change energy storage module stores energy by using high-temperature phase-change mixed salt, and can convert low-ebb and low-price off-peak electricity of a power grid and abandoned electricity such as photovoltaic electricity and wind electricity into heat energy for storage, so that the consumption of electric energy is reduced, the energy utilization rate is improved, and the hydrogen production cost is reduced.

The utility model provides a sulfur recovery system coupled with a heat storage device, which comprises a heat storage device, a reaction furnace, a sulfur recovery device and an incinerator, the sulfur recovery device comprises a reheater, a converter and a sulfur cooler, and the heat storage device comprises a high-temperature storage tank, a steam generator, a low-temperature storage tank and a heating device which are sequentially communicated end to end. A modified liquid sulfur material capable of being circularly conveyed is arranged in the heat storage device, the high-temperature storage tank is communicated with a reheater, the reheater is communicated with a steam generator and / or a low-temperature storage tank, the steam generator is connected with the low-temperature storage tank, the low-temperature storage tank is communicated with a sulfur cooler, the sulfur cooler is communicated with a waste heat boiler of a reaction furnace, and the waste heat boiler is connected with a heating device. The heating device is connected with the high-temperature storage tank; according to the device disclosed by the utility model, various different grades of energy in the sulfur recovery system can be gathered and complementarily coupled, process gas can be heated in the reheater, and medium-high pressure steam can be produced in a centralized manner.

The invention discloses a water electrolysis hydrogen production flexible ammonia synthesis coupling system, and relates to the technical field of energy utilization. Comprising a renewable energy power supply, a water electrolysis hydrogen production unit, a synthesis ammonia unit, an energy recovery and transfer unit, an information prediction unit and a control unit, the water electrolysis hydrogen production unit comprises an alkaline electrolytic bath, and the alkaline electrolytic bath is connected with a renewable energy power supply; the ammonia synthesis unit comprises an ammonia synthesizer; the hydrogen source supply device is connected with the hydrogen outlet end of the alkaline electrolytic bath; the energy recovery and transfer unit comprises a first heat exchanger, one end of the first heat exchanger is connected with the ammonia synthesizer, and the other end is connected with the alkaline electrolytic bath; the information prediction unit is used for acquiring power supply prediction information and ammonia load demand prediction information of renewable energy sources, and the control unit is used for performing scheduling control on the water electrolysis hydrogen production unit and the ammonia synthesis unit. The system provided by the invention can better adapt to the volatility of the renewable energy power supply, and ensures the stable proceeding of the production process.

Systems and methods for producing green hydrogen from a source material (e.g., biowaste) are contemplated. The source material is at least partially dehydrated to produce a dried intermediate and recovered water. The dried intermediate is pyrolyzed to produce syngas and a char. The recovered water is electrolyzed to produce oxygen and green hydrogen.

The utility model discloses a seawater concentration bromine extraction system based on deep waste heat recovery and new energy driving, and belongs to the technical field of salt chemical industry and new energy. On the basis of an existing seawater concentration bromine extraction system, a new energy mode is adopted for process heating, and heat exchange jackets are arranged on the outer walls of a sulfur combustion furnace 1 and a high-temperature SO2 flue 3; low-temperature air is sequentially fed into a heat exchange sleeve 26 and a heat exchange sleeve 20 through an air feeder 21 and exchanges heat with high-temperature and high-corrosion flue gas in a flue and higher-temperature flue gas in a sulfur combustion furnace, then the low-temperature air is fed into a miniature high-temperature waste heat hot water boiler 10, water is fed into a heating furnace, and cooled flue gas is subjected to circulating heat exchange through the air feeder 21. High-temperature water of the miniature high-temperature waste heat hot water boiler 10 is fed into the flash tank 23 and generates flash steam, and after the temperature of outlet water is reduced, the outlet water returns to the flash tank 23 for circulating heat exchange. Flash steam of the flash tank 23 is mixed with steam produced by the high-temperature heat pump steam producing device 37 and the new energy electric heating steam furnace 38, and then the mixture is sent to the liquid chlorine water bath 51 and the like for process heating.

The utility model discloses a device for preparing high-thermal-conductivity silicon nitride nano-powder by using meltable solid polycarbosilane, and relates to the field of material synthesis equipment. Comprising a PCS atomization-crosslinking tower, a fluidization-heat treatment furnace, a silicon nitride powder collector, a gas heat return pipe and a tail gas cooler, the PCS atomization-crosslinking tower is mounted above the fluidization-heat treatment furnace, and PCS crosslinking powder formed in the atomization-crosslinking tower directly falls into the fluidization-heat treatment furnace; a powder outlet of the fluidization-heat treatment furnace is connected with a silicon nitride powder collector, three fluidized bed heating sections are horizontally arranged in the fluidization-heat treatment furnace, the positions of the three fluidized bed heating sections are gradually lowered, and the heating temperature is gradually increased; the gas heat return pipe is installed in the furnace top cover, and tail gas is exhausted from the furnace top cover, cooled through the tail gas cooler and then emptied. The method can realize rapid and complete crosslinking of the powder, inhibits adhesion and agglomeration among powder particles in the reaction process, and realizes batch production of the high-purity and high-thermal-conductivity silicon nitride nano-powder.

A new polyelectrolyte multilayer coated proton-exchange membrane for electrolysis and fuel cell applications has been developed for electrolysis and fuel cell applications. The polyelectrolyte multilayer coated proton-exchange membrane comprises: a cation exchange membrane, and a polyelectrolyte multilayer coating on one or both surfaces of the cation exchange membrane. The polyelectrolyte multilayer coating comprises alternating layers of a polycation polymer and a polyanion polymer. The polycation polymer layer is deposited on and is in contact with the cation exchange membrane. The top layer of the polyelectrolyte multilayer coating can be either a polycation polymer layer or a polyanion polymer layer.

Electrical power derived from a renewable energy source is used to perform water electrolysis to produce oxygen and hydrogen. A flue gas and heat are produced from combustion of a fuel using at least a portion of the oxygen generated by electrolysis. A feed stream including hydrocarbon oil is hydroprocessed using the generated heat and at least a portion of the hydrogen generated by electrolysis to produce a product including a saturated hydrocarbon. At least a portion of the flue gas is hydrogenated using at least a portion of the hydrogen generated by electrolysis to produce a second product stream including a hydrocarbon, an oxygenate, or both.

A method for providing a fuel includes removing hydrogen sulfide and / or carbon dioxide from biogas to provide partially purified biogas, which is filled in a mobile storage system. The partially purified biogas is transported to a centralized processing facility, in the mobile storage system, by truck, rail, or ship. At the centralized processing the partially purified biogas is further processed, either to produce a fuel that is renewable or has renewable content, or to produce renewable natural gas, which is used to produce the fuel that is renewable or has renewable content.

The invention discloses a hydrogen production method and device, electronic equipment and a storage medium, according to the scheme, after a system energy storage configuration model is constructed, first data of an off-line hydrogen production system is collected, energy storage capacity optimization is carried out through the system energy storage configuration model according to the first data, and an optimization result is obtained; and finally, controlling the off-line hydrogen production system to carry out hydrogen production operation according to an optimization result. The off-grid hydrogen production system comprises a power supply unit, an energy storage unit, a transformer rectifier, a medium-voltage direct-current bus, an electrolytic bath and an inverter, renewable energy sources of wind energy and solar energy are converted into direct current through the power supply unit and the transformer rectifier, then the direct current passes through the medium-voltage direct-current bus and the electrolytic bath, the electrolytic bath electrolyzes seawater to generate hydrogen, and under the off-grid condition, it can be guaranteed that the hydrogen production process is not affected by fluctuation of a power grid; and meanwhile, under the condition of a renewable energy source micro-grid, the operation stability of the hydrogen production process can be improved in combination with the use of a medium-voltage direct-current bus.

The invention provides a petroleum coke drying and calcining system, which belongs to the technical field of tar treatment and comprises a feeding bin, a waste heat rotary drying furnace, a calcining furnace, a slag cooler, a receiving bin and a tail gas incineration chamber connected with the calcining furnace. The green petroleum coke raw material is fed into a waste heat rotary drying furnace to be dried; a drying furnace water vapor outlet, a drying furnace smoke outlet and a drying furnace waste heat tail gas inlet are formed in the waste heat rotary drying furnace; high-temperature tail gas generated by calcining and volatilizing materials in the calcining furnace enters the tail gas incineration chamber through the calcining furnace tail gas volatilization opening, and high-temperature tail gas generated by mixed combustion of the high-temperature tail gas and fuel gas entering the tail gas incineration chamber enters the calcining furnace and reversely flows with the materials in the calcining furnace to calcine the materials in the calcining furnace, so that primary utilization of the tail gas is realized. The high-temperature tail gas is calcined to absorb heat to form low-temperature tail gas, and the low-temperature tail gas enters the waste heat rotary drying furnace to dry materials, so that secondary utilization of the tail gas is realized, and the problems of low integration degree, high production cost and low treatment efficiency are solved.

The invention provides an isolation circuit for a hydrogen production system and a renewable energy hydrogen production system comprising the same, the isolation circuit comprises at least one DC conversion module and at least one DC-AC converter, and the DC conversion module comprises a single output port and a multi-output port; a single output port of the DC conversion module is coupled with the DC side of the DC-AC converter; a plurality of output ports of the DC conversion module are coupled with a plurality of external unidirectional power flow units and / or bidirectional power flow units, and the unidirectional power flow units at least comprise hydrogen production units; and the AC end of the DC-AC converter is coupled and connected with an external AC power grid or a DC power grid in series. According to the scheme, the application requirements of two coupling situations are met at the same time, various types of external units are effectively fused, all parts in the system are fused into a whole, the cost is reduced, and meanwhile positioning and maintenance of faults are facilitated.