2780 results about "Syngas" patented technology

A system and method for generating hydrogen within a petroleum reservoir and producing the hydrogen includes providing one or more wellbores into the petroleum reservoir from a surface, wherein the petroleum reservoir contains fractures by hydraulic fracturing, heating catalyst particles within the fractures of the petroleum reservoir using electromagnetic waves, wherein the heated catalyst particles generate a syngas from hydrocarbons within the petroleum reservoir, separating the hydrogen from the syngas at the surface or within the one or more wellbores, and producing the hydrogen at the surface or to the surface.

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

Systems and methods of the present disclosure includes a mixer configured to mix air and hydrocarbons and a burner configured to receive the mixed air and hydrocarbons and to generate syngas. The system also includes a cooling system configured to receive the syngas and to cool the syngas to form cooled syngas. The system further includes a collector configured to collect carbon from the cooled syngas as soot. Moreover, the system includes a flare stack configured to receive the cooled syngas and to burn off at least part of the cooled syngas.

The invention discloses a multi-stage carbon dioxide capture and utilization method and device. CO2-containing high-temperature flue gas enters an adsorption reactor and passes through the adsorption reactor filled with a bifunctional catalyst, and CO2 in the flue gas is adsorbed and captured by a catalytic material in a catalyst bed layer; decarburized gas comes out of the adsorption reactor, exchanges heat with process gas from the conversion reactor in a heat exchanger, and enters the next stage of adsorption reactor after heat exchange, when the adsorption reactor reaches the saturated adsorption capacity of an adsorbent, CO2-containing high-temperature flue gas is switched to enter the first stage of conversion reactor, at the moment, reducing gas enters the adsorption reactor, and the CO2-containing high-temperature flue gas enters the second stage of conversion reactor; and the converted synthesis gas is sent out of the device. By means of the technical process, the energy utilization rate can be fully increased, the emission reduction cost can be effectively reduced, high energy consumption caused by trapping cooling / conversion heating can be avoided, and the problems of high cost for purification and transportation after CO2 capture and potential safety hazards caused by burying are solved.

The invention discloses a method for preparing fuel from waste polyolefin through noble-metal-free low-temperature aromatization, which comprises the following steps: in the atmosphere of synthesis gas, carrying out catalytic cracking on polyolefin serving as a raw material by adopting a binary mixed catalytic system to obtain aromatic hydrocarbon; the binary mixed catalytic system comprises Zr-ZnO and a molecular sieve; the catalytic cracking temperature is less than or equal to 300 DEG C. According to the low-temperature aromatization method disclosed by the invention, methanol is generated in situ through the synthesis gas, and the methanol and olefin generated by polyolefin cracking are subjected to Prins reaction, so that the aromatization reaction can be realized at the pyrolysis temperature far lower than that in the prior art, precious metals are not needed, the additional value and the application range of a plastic recovery product are greatly enhanced, and the method is suitable for industrial production. And the cost of the recovery process is reduced.

This invention discloses a method for preparing a CuZnAlGa-based layered double hydroxide (TLH)-derived catalyst for methanol production from carbon dioxide-rich syngas. Using Cu, Zn, Al, and Ga metal salts as precursors, Na₂CO₃ and NaOH as precipitants, and a mixed alcohol-water solution as an auxiliary solvent, co-precipitation is performed under controlled temperature and pH to obtain a LDH-like catalyst precursor. After high-temperature calcination and in-situ reduction in a hydrogen atmosphere, a layered framework structure of Cu nanoparticles immobilized by oxides is obtained. The LDH-like structure provides lattice confinement, preventing Cu particle aggregation, and the interaction between Cu and the oxides enhances the catalyst surface's adsorption capacity for CO and CO₂, thereby improving the activity and stability of methanol production from carbon dioxide-rich syngas.

A catalyst may include a metal oxide substrate comprising a nickel species, wherein an exposed surface of the catalyst comprises at least some of the nickel species and the exposed surface is substantially nonporous.

According to the monolithic catalyst packed bed process system and the corresponding method for fluidized carbonate reduction based on the monolithic catalyst, by adopting the monolithic catalyst, full contact of a gas phase, a solid phase and a solid phase is guaranteed, the efficiency of carbonate reduction reaction is improved, and the utilization rate of the catalyst is increased. Meanwhile, the problem of separation of a subsequently generated oxide solid product and a catalyst solid is avoided, and continuous operation of the system is realized. According to the present invention, the heating decomposition reaction of the metal carbonate and the hydrogenation reduction reaction of the in-situ carbon dioxide are coupled, and the monolithic catalyst is adopted to perform catalysis so as to obtain the high-value metal oxide and the synthesis gas or methanol product, and compared with the prior art, the process reaction temperature is substantially reduced so as to easily promote energy saving and emission reduction.

The invention discloses a system and a method for preparing synthesis gas through methane self-heat-supply thermocatalysis coupled photothermal catalysis cascade reforming, and the method comprises the following steps: methane and oxygen are combusted in a combustion furnace, the generated high-temperature gas enters a first reactor after heat exchange, the temperature in the first reactor is maintained at 700-800 DEG C, the molar ratio of CH4 to CO2 is 1: (0.8-1.2), the temperature in the first reactor is maintained at 700-800 DEG C, and the temperature in the second reactor is maintained at 700-800 DEG C; carrying out a thermocatalytic dry reforming reaction; after the gas reacted in the first reactor is subjected to heat exchange through a second heat exchanger, the gas enters a second reactor, the temperature in the second reactor is maintained at 500-600 DEG C, the molar ratio of CH4 to CO2 is 1: (0.8-1.2), and a photo-thermal catalytic dry reforming reaction is carried out; high-temperature gas obtained after reaction in the second reactor enters a third heat exchanger for heat exchange and then enters a third reactor, the temperature in the third reactor is kept at 300-400 DEG C, the molar ratio of CH4 to H2O is 1: (0.8-1.2), and a second-stage photo-thermal catalytic reaction is carried out.

A method for the generation of a gas mixture including carbon monoxide, carbon dioxide and hydrogen for use in hydroformylation plants, including the steps of evaporating water to steam; feeding the steam to a solid oxide electrolysis cell (SOEC) or an SOEC stack at a sufficient temperature for the cell or cell stack to operate while effecting a partial conversion of steam to hydrogen; utilizing the effluent SOEC gas including H2 together with CO2 from an external source as feed for a RWGS reactor in which the RWGS reaction takes place, converting some of the CO2 and H2 to CO and H2O; removing some of or all the remaining steam from the raw product gas stream; using said gas mixture comprising CO, CO2 and H2 for liquid phase hydroformylation utilizing carbon monoxide and hydrogen as reactants, while recycling CO2 to the RWGS reactor.

The present invention belongs to the field of electrochemistry, and specifically relates to an anion membrane electrode and a preparation method thereof, and a device for preparing synthesis gas by gas-phase electrolysis of carbon dioxide. The preparation method is as follows: a porous membrane protective layer is covered on the surface of a vacuum heating plate, and then an anion membrane is covered; then an anion exchange ionomer solution and a cathode catalyst anion exchange ionomer solution are sprayed on the surface in sequence. The present invention can reduce the structural damage to the anion membrane caused by the temperature fluctuation of the metal plate surface during the heating process of the vacuum heating plate by introducing a porous membrane protective layer between the anion membrane and the vacuum heating plate; the anion exchange ionomer layer is introduced between the catalyst layer and the anion membrane to increase the bonding strength between the catalyst layer and the anion membrane and increase the stability of the membrane electrode; during the volatilization process of the heating solvent, the solvent can be promoted to volatilize at low temperature by blowing dry, thereby accelerating the membrane electrode preparation process and improving the stability of the membrane electrode, thereby extending the service life of the device.

The invention belongs to the technical field of carbon neutralization, and discloses an organic solid waste pyrolysis gasification tar hydrocarbon co-production quality-divided utilization method, which comprises the following steps of: firstly, dividing tar generated in an organic solid waste pyrolysis gasification process into light tar, medium tar and heavy tar according to boiling range difference through in-situ thermal-state quality division; the light tar is subjected to catalytic steam reforming to obtain hydrogen-rich synthesis gas, the medium tar is subjected to steam reforming to obtain synthesis gas and semicoke generated by condensation polymerization, and the semicoke and the heavy tar are subjected to steam activation to obtain synthesis gas and porous carbon; and carrying out water-gas shift, CO2 capture and pressure swing adsorption purification treatment on the obtained synthesis gas to obtain battery-grade hydrogen. According to the method, the tar is converted into high-value porous carbon and high-purity hydrogen step by step through stage treatment and quality-divided utilization of the tar, so that the problems of rapid deactivation of a catalyst, waste of high-temperature energy and the like in the tar treatment process are effectively solved, and resource utilization of the tar is realized.

The present disclosure provides systems and methods for hydrogen production as well as apparatuses useful in such systems and methods, including steam generation systems and methods. Hydrogen is produced by reforming of a hydrocarbon in a plurality of reformers to achieve improved reforming efficiency. A CO2 convective reformer (CCR) and an oxygen secondary reformer (OSR) are used in series to convert hydrocarbon and steam to synthesis gas with substantially complete carbon capture. Steam generation is provided along separate pathways to provide separate steam streams of different composition.

The invention relates to the technical field of coal chemical industry, in particular to a coal gasification black water circulation and black water waste heat recycling system and method. The coal gasification black water circulation and black water waste heat recycling system comprises a synthesis gas washing tower, a high-pressure flash tank, a low-pressure flash tank, a black water heat exchanger, a vacuum flash tank, a settling tank, a grey water tank, a low-pressure flash steam stripping tower and a high-pressure flash steam stripping tower. The coal gasification black water treated by the coal gasification black water circulating and black water waste heat recycling system can be reused as circulating water of a synthesis gas washing tower, so that the cyclic utilization of water resources is realized, the use of fresh water and the discharge of waste water are reduced, and the production cost and the environmental pressure are reduced. Meanwhile, the problem that a black water pipeline is scaled and blocked due to high temperature is solved, waste heat of the black water can be fully replaced for effective utilization, carbon is reduced, energy is saved, the purpose of cooling the black water is achieved, the cooling cost of a vacuum flash evaporation system is saved, and continuous and reliable economic benefits are created for enterprises.

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 a coal underground gasification mining front and rear furnace common well continuous coordination propulsion method which comprises the following steps: S1, constructing a gas inlet well and a gas outlet well of a first furnace, and performing gas injection fracturing on a gasification to-be-mined area of the first furnace by using the gas outlet well; s2, coal seam combustion gasification operation is conducted on the gasification to-be-mined area of the first furnace, and synthesis gas is collected through a gas outlet well of the first furnace; meanwhile, a gas outlet well of the second furnace is used for conducting gas injection fracturing on the gasification to-be-mined area of the second furnace; s3, the combustion space area of the first furnace is made to be idle for cooling, meanwhile, the second furnace conducts combustion gasification operation, and the third furnace conducts gas injection fracturing operation; each furnace is subjected to a flow process of gas injection fracturing, combustion gasification, idle cooling and CO2 storage well closing treatment; and S4, completing each flow process in sequence. The upper furnace and the lower furnace carry out difference node follow-up according to the flow process by one flow node, the upper furnace and the lower furnace carry out well sharing, the number of drilled wells is reduced, geological damage is relieved, and the mining efficiency is improved.

The invention discloses a method for preparing methanol from carbon dioxide by coupling biomass direct combustion with wind, light, green and hydrogen. The method comprises the following steps: feeding biomass into a biomass boiler through a screw feeder and a trestle for direct combustion to obtain flue gas with high carbon dioxide content; the flue gas is treated to generate carbon dioxide gas with the pressure ranging from 1.4 MPaG to 1.6 MPaG; the method comprises the following steps: mixing carbon dioxide gas and hydrogen according to a molar ratio of about 1: 3, and compressing the mixture into 9.0 MPaG synthesis gas through a synthesis gas compressor; the synthesis gas flows to a gas-gas heat exchanger for heat exchange and temperature rise, and then is introduced into a methanol synthesis tower to form a material; the materials are subjected to heat exchange and cooling through a gas-gas heat exchanger and then flow to a high-pressure flash tank to be separated to form first gas and first liquid; the first liquid flows to a low-pressure flash tank to be separated to form second gas and second liquid conveyed to a crude methanol rectifying tower; separating and purifying the crude methanol in a rectifying tower to form methanol, fusel and overhead gas flowing to the biomass boiler; the utilization rate of the biomass carbon is improved.

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 invention relates to the technical field of sustainable aviation fuel preparation processes, and discloses a process for producing sustainable aviation fuel by capturing carbon dioxide of an industrial boiler with an industrial byproduct hydrogen, which comprises the following steps: S1, raw material pretreatment; s2, converting hydrogen and carbon dioxide in the raw materials into Fischer-Tropsch synthesis gas by using a catalyst; s3, converting the Fischer-Tropsch synthesis gas obtained in S2 into liquid alkane; s4, the liquid alkane obtained in S3 is subjected to hydroisomerization to generate sustainable aviation fuel, industrial by-products of hydrogen and carbon dioxide can be converted into the sustainable aviation fuel through the steps of Fischer-Tropsch synthesis, hydroisomerization and the like, the fuel can serve as a substitute of petroleum fuel, dependence on traditional petroleum resources is reduced, and the sustainable aviation fuel is obtained. According to the invention, not only can sustainable aviation fuel be produced, but also light products (C5-C8 alkanes) and heavy products (C16-C24 alkanes) can be generated, and the light products and the heavy products can be respectively used for further Fischer-Tropsch synthesis reaction and can be sold as automotive second-generation biodiesel.

The invention provides an improved ammonia production system based on a temperature swing adsorption principle. The improved ammonia production system comprises a water electrolysis hydrogen production module, a deep cooling air separation nitrogen production module, a multi-stage ammonia synthesis tower module and a double-bed circulating adsorption separation ammonia module, the water electrolysis hydrogen production module and the deep cooling air separation nitrogen production module provide raw material gas for the multi-stage ammonia synthesis tower module through a mixer, low-grade waste heat of a multi-stage ammonia synthesis tower serves as a heat source of the double-bed circulating adsorption separation ammonia module, and the double-bed adsorption separation ammonia module is connected with the multi-stage ammonia synthesis tower. The working conditions of an adsorption bed of the double-bed ammonia adsorption and separation module comprise an adsorption working condition and a desorption working condition, the adsorption bed alternately performs the adsorption working condition and the desorption working condition within the operation time, and low-grade waste heat from a multi-stage ammonia synthesis tower is used for driving to perform separation operation on ammonia synthesis gas so as to obtain high-purity ammonia; according to the invention, the operation pressure in an ammonia product separation project can be effectively reduced, circulation is formed, and the purity and the recovery rate of the obtained ammonia product are not reduced while the waste heat in the system is further utilized.

The invention relates to the technical field of firepower peak shaving power stations, in particular to a flexible peak shaving power station coupled with compressed carbon dioxide energy storage and a use method. A flexible peak regulation power station coupled with compressed carbon dioxide energy storage comprises a combustion chamber; the expansion machine is in pipeline communication with the combustion chamber, and the expansion machine is suitable for being connected with a generator set; the gasification assembly comprises a gasification pipeline, and the gasification pipeline is suitable for inputting synthesis gas into the combustion chamber; the air compression assembly comprises a compression pipeline, and the compression pipeline is suitable for inputting oxygen into the combustion chamber; and the gas storage assembly comprises a gas storage pipeline, the gas storage pipeline penetrates through the combustion chamber, and the gas storage pipeline is suitable for inputting compressed carbon dioxide into the expansion machine. The invention provides a flexible peak regulation power station coupled with compressed carbon dioxide energy storage and a use method, and aims to solve the problem that a firepower peak regulation power station is narrow in regulation range.

The invention discloses a carbon transaction-oriented biomass gas coupling coal-fired power generation full-life-cycle carbon emission accounting method. The method comprises the steps of determining accounting boundaries of collection and transportation, storage pretreatment, gas production and coupling power generation of covering raw materials; activity data are collected, space-time mapping of upstream batch data and unit side continuous operation data is established, and data quality grading and uncertainty measurement are carried out; when actually measured synthesis gas components or lower calorific values are missing, a soft measurement model is constructed based on operation data, batch characteristic feedforward coupling is introduced, and an estimated value and uncertainty are output; calculating an intermediate quantity based on a material-energy-carbon conservation mechanism model, performing dynamic correction by adopting a residual correction model containing physical consistency constraint, and adjusting a physical constraint weight according to uncertainty; and an emission list and an MRV data packet are generated in combination with the dynamic emission parameters, and are used for monitoring, reporting, checking and transaction settlement, so that the precision and the traceability are improved, and the physical consistency is ensured.

The invention provides a multistage coupling chemical looping hydrogen production device. The multistage coupling chemical looping hydrogen production device comprises a first-section reducer, a water vapor oxidation hydrogen production device, a second-section reducer, a methane converter and an air oxidizer, identical first oxygen carriers are arranged in the first-section reducer and the water vapor oxidation hydrogen production device, and identical second oxygen carriers are arranged in the second-section reducer, the methane converter and the air oxidizer; the methane converter is connected with the first-section reducer and is used for conveying synthesis gas after methane conversion to the first-section reducer; the second-section reducer is connected with the methane converter and is used for refluxing carbon dioxide or water vapor or both to the methane converter; the first-section reducer is connected with the second-section reducer and is used for conveying reduction tail gas containing carbon monoxide or hydrogen or the carbon monoxide and the hydrogen to the second-section reducer. Therefore, the invention provides the multistage coupling chemical looping hydrogen production device and method which can realize energy self-sustaining and do not need external energy input.

The invention discloses a test device, a test system and a test method for simulating lump coal thermal stripping under a coal underground gasification condition. The test device comprises a heating furnace, a coal briquette clamping tool, a suspension tool and an online thermobalance. A furnace body of the heating furnace is provided with a heating cavity, a gasifying agent inlet and a synthesis gas outlet; the coal briquette clamping tool is arranged in the heating cavity and used for clamping a coal briquette, and only part of the bottom surface or the whole bottom surface of the coal briquette is exposed out of the coal briquette clamping tool; the suspension tool penetrates through the furnace body, and the bottom end of the suspension tool extends into the heating cavity and is connected with the coal briquette clamping tool; the on-line thermobalance is arranged outside the heating furnace and is connected with the top end of the suspension tool; the heating furnace is provided with a heating element, and the heating element is arranged below the coal briquette clamping tool; the top wall and the side walls of the coal briquette clamping tool are made of thermal insulation materials, so that only the bottom face of the coal briquette can be heated. According to the invention, UCG reaction conditions can be simulated, and thermal stripping parameters and weight loss rate of coal briquettes can be measured on line.

According to the flexible and efficient carbon dioxide high-temperature capture and in-situ conversion device and method, carbon dioxide high-temperature capture is conducted on industrial flue gas, and the industrial flue gas is converted into synthesis gas in an in-situ recycling mode. According to the method, carbon dioxide adsorption and conversion are completed in situ under the approximate temperature and pressure conditions, the energy utilization rate can be fully increased, the emission reduction cost can be effectively reduced, high energy consumption caused by capture cooling / conversion heating can be avoided, and the high cost of purification and transportation after CO2 capture and potential safety hazards caused by burying are avoided; the reactor disclosed by the invention is intrinsically safe, and the possibility of overtemperature and damage of the reactor and a catalytic material caused by non-uniform reaction, accidental interruption of a heat exchange medium and the like of a traditional reactor can be avoided; the reactor is low in pressure drop, simple in process, easy to operate and maintain, low in investment and small in occupied area; in-situ coupling utilization of heat in the adsorption heat release / conversion heat absorption process can be achieved, and energy is saved by 50% or above compared with an existing reactor.

The present invention provides a method for producing synthetic fuel from water and carbon dioxide. The method includes the steps of (a) preparing water-derived hydrogen, (b) preparing carbon dioxide, (c) introducing the hydrogen and carbon dioxide into a first reaction to produce a first product comprising synthesis gas, (d) introducing the synthesis gas into a second reaction to produce a second product comprising syncrude, (e) dividing the syncrude oil into a plurality of fractions comprising a first fraction, (f) introducing at least one fraction of the plurality of fractions into a hydrogenation reaction to produce a third product, and (g) recovering a fraction corresponding to a boiling point range of the first fraction from the third product. The present invention also provides an aviation fuel produced by the method.

The invention includes a systems and methods for producing a gaseous outflow stream comprising chemical products and thermal energy, where the method includes providing a first reactant stream comprising CO2 and a second reactant stream comprising a hydrocarbon reactant, providing a plasma reactor equipped with a source of microwave energy for forming a non-thermal plasma; mixing the first reactant stream and the second reactant stream to form a feedgas mixture; directing the feedgas mixture to encounter microwave energy in the plasma reactor, wherein the microwave energy energizes the feedgas mixture to form the non-thermal plasma, thereby producing thermal energy and transforming the feedgas mixture in the non-thermal plasma into a product mixture comprising the chemical products; and directing the product mixture and the thermal energy to exit the plasma reactor, thereby forming the gaseous outflow stream comprising the chemical products and the thermal energy.

Processes and apparatus for low-CO2 emissions methanol production using a high efficiency (>90%) reformer fired with a low-carbon fuel (C:H<0.03) to produce syngas. CO2 is removed from the syngas, and the CO2-lean syngas is fed to a methanol synthesis loop. A purge stream from the methanol synthesis loop is processed to recover a hydrogen-rich stream and a tail gas stream. The hydrogen-rich stream is supplied as fuel to fire the reformer, along with a portion (<10%) of the tail gas, to produce a CO2-lean flue gas (<3 vol %, dry basis). The flue gas is optionally cooled below a dew point to form condensate, which can be collected and removed. The methanol production can have a carbon efficiency of 97% or more, and a CO2 emissions reduction (compared to natural gas firing) of 88% or more.

The invention aims to provide the aluminum ash-based chemical-looping denitrification ammonia synthesis method, active aluminum components, catalytic components and primary structures in the aluminum ash are fully utilized as nitrogen carrier raw materials, and aluminum ash denitrification and continuous ammonia synthesis are realized through ammonia release and nitrogen carrying respectively. The method specifically comprises the following steps: (1) grinding the aluminum ash to a required particle size range; (2) high-temperature water vapor is introduced into the aluminum ash which is placed in the ammonia release reactor and ground in the step (1), and primary ammonia release is carried out; (3) uniformly mixing the ammonia release reaction product obtained in the step (2) with a carbon source in proportion, introducing nitrogen into a nitrogen-carrying reactor, and realizing nitrogen fixation regeneration through carbon thermal reduction; (4) introducing an oxidizing agent into the product subjected to nitrogen fixation in the step (3) in a carbon removal reactor for carbon removal; and (5) conveying the nitrogen carrier decarbonized in the step (4) back into the ammonia release reactor, and repeating the steps (2), (3) and (4) to realize the aluminum ash-based chemical-looping ammonia synthesis circulation. Compared with the prior art, based on the aluminum ash, through the properties of a chemical looping technology, normal pressure, low consumption and elimination of aluminum ash harm, preparation of synthesis ammonia coupling synthesis gas is achieved, and a new way is provided for energy reform and development of a synthesis ammonia new technology and mining of aluminum ash recycling and energy regeneration.

A process for producing hydrocarbons, usable as fuels, from industrial, agroforestry, urban waste and derivatives thereof, with high sustainability and lower CO2 emissions, given the same energy, with respect to the equivalent fuels of fossil origin, by means of a series of subsequent conversions in which first a syngas is produced,, obtained by gasification of waste with oxygen at high temperature, which is purified and adjusted in composition by modulating the H2 / CO ratio and then converted into methanol. The methanol obtained is in turn catalytically converted into light olefins by means of methanol -to- propylene (MTP) technology; such olefins are catalytically converted by oligomerization in order to obtain a hydrocarbon mixture comprising an ultra-light fraction (C1 and C2 ), a light fraction (C3 and C4), a fraction with a boiling range from 60 to 300°C, and a fraction with a boiling temperature above 300°C to be used for product separation and fractionation treatments.