2185results about "Gasification processes details" patented technology

A method for thermal treatment and chemical transformation of waste comprising carbonaceous materials for generation of a fuel gas or methanol, and for processing solid particles using a cyclonic particle separator, comprising adjusting the humidity of the materials, introduction into thermolysis reactor(s), introduction into a conversion unit, causing gasification of solid carbonaceous material, introducing the solid rest into char handling unit for further treatment in a cyclonic particle separator.

Chemical recycling facilities for processing mixed plastic waste are provided herein. Such facilities have the capability of processing mixed plastic waste streams and utilize a variety of recycling facilities, such as, for example, solvolysis facility, a pyrolysis facility, a cracker facility, a partial oxidation gasification facility, an energy generation / energy production facility, and a solidification facility. Streams from one or more of these individual facilities may be used as feed to one or more of the other facilities, thereby maximizing recovery of valuable chemical components and minimizing unusable waste streams.

Disclosed herein are systems and methods of gas sequestration of carbon dioxide from a fossil-fueled hydrogen production plant. The method includes producing at least hydrogen and carbon dioxide above ground from a fossil-fueled hydrogen production plant, injecting at least a portion of the hydrogen and carbon dioxide produced from the fossil-fueled hydrogen production plant into a geological hydrogen storage unit and a geological carbon dioxide storage unit, respectively, wherein the portion of the carbon dioxide is injected concurrently with the portion of the hydrogen. The injection of the portion of carbon dioxide and hydrogen underground are performed through carbon dioxide injection well(s) and hydrogen injection well(s), respectively, wherein a hydrogen injection wellhead(s) and a carbon dioxide injection wellhead(s) are located on a multi-well pad proximate the fossil-fueled hydrogen production plant.

Chemical recycling facilities for processing mixed plastic waste are provided herein. Such facilities have the capability of processing mixed plastic waste streams and utilize a variety of recycling facilities, such as, for example, solvolysis facility, a pyrolysis facility, a cracker facility, a partial oxidation gasification facility, an energy generation / energy production facility, and a solidification facility. Streams from one or more of these individual facilities may be used as feed to one or more of the other facilities, thereby maximizing recovery of valuable chemical components and minimizing unusable waste streams.

The invention relates to the technical field of biomass energy treatment, and particularly discloses a biomass gasification fuel gas conveying system which comprises a biomass gasification furnace and further comprises a cooling device arranged on a gas output pipeline of the biomass gasification furnace; the water cooling circulation mechanism is connected to the cooling device, and the guide waste discharge barrel is connected with an output pipeline of the biomass gasifier; the waste discharge barrel cleaning mechanism is arranged on the outer wall of the guide waste discharge barrel; the tar and dust removal mechanism is arranged above the guide waste discharge barrel, and the ammonia water supplement mechanism is connected to an input pipeline of the waste discharge barrel cleaning mechanism through the water cooling circulation mechanism; and the monitoring and purifying mechanism is arranged at the output end of the tar and dust removing mechanism. According to the invention, fuel gas cooling, tar and dust removal, equipment cleaning and maintenance and stable conveying are realized.

The invention discloses a red mud reduction, magnetic separation and recovery device and process based on chemical looping gasification. The device comprises a chemical looping gasification device, a red mud feeder, a bag-type dust collector and a magnetic separator, the chemical chain gasification device comprises an air reactor, a first cyclone separator, a fuel reactor, a solid fuel feeder and a second cyclone separator, wherein the upper part of the air reactor is connected with a feed port of the first cyclone separator, a discharge port of the first cyclone separator is connected with the upper part of the combustion reactor, and the upper part of the fuel reactor is connected with a feed port of the second cyclone separator; the top of the second cyclone separator is connected with the bag-type dust collector through a fuel reactor tail flue, and the magnetic separator is connected with an ash discharge port of the bag-type dust collector; and the red mud feeder is connected with the bottom of the fuel reactor. Chemical looping gasification and red mud reduction roasting magnetic separation are combined, and iron element recovery and oxygen carrier replacement are achieved.

The invention provides a biomass and coal complementary gasification decarburization and hydrogen production method and system.The method comprises the steps that biomass is dried to generate dry biomass, one part of the dry biomass enters a combustor, the other part of the dry biomass and pretreated coal form pyrolysis fuel, and the pyrolysis fuel enters a pyrolysis furnace; the dry biomass and the hot air are combusted in the combustor to generate heat and first flue gas; the heat and the first flue gas are adopted to supply heat to a gasification furnace, coke from a pyrolyzing furnace is gasified, and synthesis gas is generated; second flue gas is discharged after the first flue gas supplies heat to the gasification furnace, the second flue gas supplies heat to the pyrolysis furnace, pyrolysis fuel is pyrolyzed, coke is generated, pyrolysis gas is fed back to the gasification furnace, and the coke is fed back to the pyrolysis furnace; the synthesis gas and the pyrolysis gas form a first mixed gas, tar is removed through tar separation, and a pure mixed gas is generated; and after the pure mixed gas is subjected to water vapor shift reaction and carbon capture, hydrogen with relatively high purity is obtained. According to the invention, carbon-hydrogen component complementation of coal and biomass is realized, the yield of gaseous products is increased, and the overall carbon emission is effectively reduced.

The present invention relates to multi-layered pyrolysis reactor for the heat treatment of a rubber granulate. The multi-layered pyrolysis reactor has a pyrolysis zone and a gasification.

The invention relates to the technical field of pyrolysis gas treatment, in particular to a biomass pyrolysis gas self-heating reforming hydrogen production system which comprises a pyrolysis gas reforming hydrogen production subsystem and a thermochemical self-heating subsystem. Wherein the pyrolysis gas reforming hydrogen production subsystem can realize reforming quality improvement of pyrolysis gas to obtain high-purity hydrogen. On one hand, the thermochemical self-heating subsystem provides energy for the reforming hydrogen production reaction through an exothermic reaction of calcium oxide and carbon dioxide, and continuous and efficient operation of the reforming hydrogen production reaction is achieved; on the other hand, primary separation and quality improvement of the reformed gas can be realized, and the energy of the pyrolysis gas which is difficult to store and transport and has low utilization value is stored in calcium oxide. Through organic coupling of biomass pyrolysis gas reforming hydrogen production and thermochemical heat storage, self-heat-supply upgrading utilization of biomass pyrolysis gas and low-cost preparation of green hydrogen are achieved, and the device has the advantages of being high in energy utilization rate, high in treatment efficiency, convenient to operate and control, high in applicability and the like.

The invention relates to the technical field of liquid air energy storage, and discloses a liquid air energy storage coupling system. The liquid air energy storage coupling system comprises a liquid air energy storage subsystem and a biomass gasification subsystem. The liquid air energy storage subsystem comprises a compressor unit, a heat storage unit, a cold storage unit and a turbine unit. And the biomass gasification subsystem comprises a biomass gasification furnace. And an air inlet of the heat storage unit is communicated with an air outlet of the air compressor unit. And the cold storage unit communicates with the heat storage unit. An air outlet of the heat storage unit communicates with an air inlet of the turbine unit and is used for conveying high-temperature air to the turbine unit, the high-temperature air enters the turbine unit to drive the power generator to generate power, and an air outlet of the turbine unit is used for discharging cooled air. And a gasifying agent inlet of the biomass gasifier is communicated with an air outlet of the turbine unit. Resource utilization of clean air at the outlet of the liquid air energy storage system can be achieved, and the system efficiency of the liquid air energy storage system is improved.

The invention relates to a gasification method based on molten metal, belongs to the technical field of recycling of recyclable and renewable resources such as household garbage, industrial garbage and biomass, and solves the problem that same-quality or high-quality utilization cannot be realized due to incomplete decomposition of macromolecular organic matters in the prior art. Secondary pollution to the environment is caused, and the like. According to the gasification method based on the molten metal, the molten metal serves as a medium and a heat source, a material containing a high-molecular compound is subjected to a decomposition gasification reaction under the action of a gasification agent, and inorganic mixed gas including CO and H2 is generated. The same-quality and high-quality reutilization of recyclable and renewable resources such as household garbage, industrial garbage and biomass is realized.

The invention relates to the technical field of biomass gasification furnaces, and discloses a downdraft biomass gasification furnace which comprises a support and a gasification furnace sensor, a fire grate segment set is arranged at the top of the support and comprises an upper fire grate segment, a middle fire grate segment and a lower fire grate segment, and the upper fire grate segment, the middle fire grate segment and the lower fire grate segment are arranged on the support. The upper fire grate segment, the middle fire grate segment and the lower fire grate segment each comprise a plurality of fixed fire grate segments and a plurality of movable fire grate segments, and the fixed fire grate segments and the movable fire grate segments are alternately arranged. According to the invention, the plurality of hydraulic rods are used for detecting the reaction intensity of each section according to the gasification furnace sensor to control the material pushing frequency of different sections in the gasification furnace in a segmented manner, and the arrangement number of the upper fire grate segment, the middle fire grate segment and the lower fire grate segment corresponding to the ventilation holes in the single fire grate segment is reduced; the staying time of the material layer in different sections is matched with the reaction intensity, and the water tank synchronously adjusts the cooling rate and the gas inlet amount of the gasifying agent during adjustment in cooperation with the adjusting mechanism, so that the gas conveying quality of the gasification furnace is guaranteed.

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 pyrolysis device and method with instantaneous high temperature rise and directional regulation and control, and the method comprises the following steps: putting a pyrolysis substance into a pyrolysis reaction vessel, introducing inert gas into a superheated steam inlet, and emptying air in the pyrolysis device; superheated steam is introduced into the superheated steam inlet, and a pressure regulating valve is regulated to enable the pressure in the tubular furnace to reach the required pressure; and collecting and treating the pyrolysis product at the pyrolysis product outlet. According to the method, the boiling point of the added water vapor is regulated and controlled by controlling the pressure of a reaction section according to a Clausius-Claelong equation, sufficient heat is provided for pyrolysis substances at a high-gasification latent heat speed of the water vapor, short-time efficient pyrolysis is realized, and production of by-products in the process is reduced compared with slow heating.

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.

Process for the synthesis of methanol comprising the steps of: subjecting a biomass to a gasification process in presence of steam and an oxidant; subjecting the so obtained gasifier stream to water gas shift conversion and purification to yield a synthesis gas with hydrogen, carbon monoxide and CO2; mixing said synthesis gas with a second stream of synthesis gas to yield a third stream of synthesis gas; feeding said third stream of synthesis gas to a methanol synthesis loop wherein a crude methanol and a tail gas retaining methane are produced; subjecting said tail gas to a reforming step in presence of an oxidant to generate said second stream of synthesis gas.

The invention relates to the technical field of methanol dimethyl ether fuel synthesis processes, in particular to a preparation method of a low-carbon biomass methanol dimethyl ether fuel. Biomass thermal cracking charcoal, tar, pyroligneous liquor and an additive are blended into neutral charcoal slurry according to a certain proportion, and then the neutral charcoal slurry is converted into the low-carbon biomass methanol dimethyl ether fuel. According to the biochar particles, a grading technology is adopted, namely, biochar with different particle sizes is mixed in proportion for pulping, so that the pulping concentration of biochar pulp can be effectively improved; according to the method, the pH of the wood vinegar is adjusted to be neutral, particulate matter in the solution is filtered out, and then pulping is conducted, so that the pulping concentration and the pulp quality can be effectively improved, and meanwhile pipeline blockage and nozzle abrasion are avoided.

The invention relates to the technical field of garbage treatment, in particular to a garbage low-carbon coupling treatment system and method.The method comprises the following steps that large wet materials and organic waste residues are separated from kitchen garbage, and the large wet materials are dried and put into a garbage incinerator to be combusted to release heat; fermenting the organic waste residues to obtain biogas which is used for burning and heating methanol liquid to generate methanol steam, mixing the methanol steam with water vapor, and performing catalytic hydrogen production to obtain mixed gas; the sludge is dried, a part of the dried sludge is put into a biomass gasifier to be subjected to coupled gasification with biomass waste to generate biomass gas, and the rest of the dried sludge is put into a garbage incinerator to be combusted together; and the mixed gas obtained through catalytic hydrogen production is separated, hydrogen and other combustible gas are obtained, and the biomass gas and the other combustible gas are fed into a garbage incinerator to be combusted together. According to the scheme, kitchen waste, sludge and biomass waste can be subjected to coupling treatment, and hydrogen is prepared.

The present disclosure relates to a device for gas conversion comprising a plasma reactor and a chamber configured for receiving a gas flow of converted and unconverted feed gas evacuated from the plasma reactor. The chamber comprises a supply throughput for filling the chamber with solid reactant material so as to form the fixed bed of solid reactant material, and at least one gas exhaust window for extracting a product gas. The device for gas conversion further comprises a silo for storing a stock of the solid reactant material and a connecting tube connecting a bottom opening of the silo with the supply throughput of the chamber. The silo and the connecting tube are configured such that, when the device is in operation and solid reactant material is being depleted in the chamber, a flow of solid reactant material from the silo to the chamber is induced so as to maintain the chamber filled with solid reactant material, and wherein the flow of solid reactant material from the silo to the chamber is induced by a gravitational force or at least partly by a gravitational force. The present disclosure also relates to a method for gas-conversion.

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.

The invention relates to the field of biomass energy conversion, in particular to a multi-mode intelligent purification system and method for a biomass gasifier, and the system integrates five modules of self-adaptive multi-field coupling tar cracking, multi-dimensional real-time intelligent monitoring, in-situ nano catalyst regeneration, energy cascade recovery and digital twin driving. According to the system, through the synergistic effect of an electric field, ultrasonic waves, catalysis and a temperature gradient, the tar removal efficiency is remarkably improved to 99.5% or above, the content of tar at an outlet is lower than 5 mg / Nm < 3 >, an intelligent monitoring module collects technological parameters in real time, and precise control is ensured; the catalyst regeneration module performs in-situ regeneration on a catalyst based on monitoring data to maintain efficient operation of the system; the energy recovery module utilizes heat energy in a gradient mode and optimizes energy configuration, the digital twin module constructs a system digital model, optimization and predictive maintenance of real-time data driving are achieved, and the system achieves innovation breakthrough of intelligence and energy conservation while improving the biomass gasification purification efficiency.

Ammonia, methanol, Fischer Tropsch products, and derivatives thereof are made by using hydrogen and oxygen supplied from an electrolyzer that is at least partially powered by renewable power, resulting in green process and systems that produce green products disclosed herein. A process using biomass and renewable energy includes producing an unshifted syngas from biomass and oxygen in a gasification unit, introducing water into an electrolyzer to produce an oxygen product and a hydrogen product, and introducing the oxygen product to the gasification unit. The electrolyzer is powered by renewable energy, and the oxygen product supplies at least a portion of the oxygen to the gasification unit.

It has been discovered that recycle content CO2 streams produced in a chemical recycling facility involving waste plastic pyrolysis can be converted into recycle content syngas (r-syngas), which can be used for various applications. More particularly, recycle content CO2 streams generated from a pyrolysis facility, a cracking facility, and / or an ethylene oxide facility may be recovered and converted into r-syngas. Moreover, recycle content methane, produced directly or indirectly from waste plastics, may also be used to produce flue gas streams, which provide additional recycle content CO2 streams to produce additional recycle content syngas. Thus, methods for producing a useful recycle content product (i.e., r-syngas) from conventional waste streams that are typically exhausted (i.e., CO2 streams) are provided herein.

The invention relates to the technical field of green fuel preparation, and discloses a method for preparing green fuel by coupling biomass gasification and combustion, which comprises the following steps: (1) separating N2 from air, taking a part of residual gas as a gasification agent, and taking the other part as combustion gas; (2) carrying out chemical chain gasification on the biomass through steam under the condition of a gasifying agent to obtain H2 and CO2; (3) carrying out chemical looping combustion on the biomass under the conditions of an oxygen carrier and combustion gas to obtain CO2; (4) electrolyzing a part of obtained CO2 by using electric energy obtained by biomass chemical looping combustion to obtain CO; (5) synthesizing N2 and H2 to prepare a green NH3 product; and synthesizing H2, CO2 and CO to prepare a green methanol product. According to the method, a biomass fuel chemical looping power generation and biomass chemical looping gasification coupling technology is applied, a carbon source in biomass is fully utilized, meanwhile, green NH3 and methanol products are prepared, and efficient utilization of resources is achieved.

The invention discloses a comprehensive utilization method and system for high-value organic wastes and adjustable target products, and belongs to the technical field of resource utilization of organic wastes. The system comprises gasification and carbonization equipment, an afterburning type waste heat boiler, a gas generator set, steam explosion equipment, activated carbon preparation equipment, anaerobic fermentation equipment, a methanol preparation system, flue gas waste heat recycling equipment, an ammonia gas preparation system, biomass charcoal pure oxygen combustion equipment, a green hydrogen preparation system and a biodiesel preparation system. The three technologies of gasification carbonization, steam explosion and anaerobic fermentation are coupled, the treatment efficiency is greatly improved, deep resource utilization of organic solid waste and organic wastewater is achieved through the same set of equipment, the equipment investment is reduced, and the occupied area is reduced; biomass green electric power generated by the gas generator set is used for splitting water to produce hydrogen and oxygen; and secondary gradient utilization and material reutilization of the waste heat of the flue gas are realized.

The invention discloses a system and a method for producing sponge iron by coupling a gasification furnace and a gas-based shaft furnace. The system comprises a coal pretreatment device for pretreating received raw material coal; the gasification furnace receives the raw material coal treated by the coal pretreatment device through a conveying device, and synthesis gas is obtained through reaction; the mixer receives furnace top gas generated by the gas-based shaft furnace, mixes the furnace top gas with synthesis gas to obtain mixed gas, and outputs the mixed gas to the dust remover; the high-temperature desulfurization device is used for carrying out desulfurization treatment on the dedusted mixed gas by using a high-temperature desulfurization agent, and the high-temperature decarbonization device is used for carrying out decarbonization treatment on the desulfurized mixed gas and outputting the decarbonized mixed gas to the gas-based shaft furnace; iron ore and / or oxidized pellets are / is arranged in the gas-based shaft furnace, the decarbonized mixed gas is received, and sponge iron is generated through reaction. According to the method, the synthesis gas is cooled by using the furnace top gas, additional cooling equipment is not needed, the cost is reduced, the energy utilization rate is increased, and cleaner and more efficient sponge iron production is realized.

The present invention relates to a novel CLC plant and to a novel CLC method employing a cyclone oxidation reactor to oxidize the oxygen carrier.

The invention belongs to the technical field of biomass energy power generation, and particularly relates to a decoupling type biomass gasification power generation system and a multi-parameter cooperative control method.The method comprises the steps that 1, biomass raw materials are fed into a vertical multi-section decoupling gasification furnace to be gasified, a gasifying agent and water vapor are introduced into the decoupling gasification furnace, and the biomass raw materials are gasified by adjusting the introduction amount of the gasifying agent and the water vapor; the temperature of a reduction zone is controlled to be 700-900 DEG C; 2) cooling a gasification product of the decoupling gasification furnace through a heat exchanger, performing primary filtration through a filter I, removing moisture through a steam-water condensation separator, pressurizing through a Roots blower, performing secondary filtration through a filter II, and feeding into an internal combustion engine for power generation; and (3) gas exhausted by the internal combustion engine is supercharged by an exhaust turbocharger, compressed by a compressed air generator and sent to the decoupling gasifier as a gasifying agent. The system has the advantages that in-situ high-temperature catalytic cracking of tar, efficient utilization of waste heat and stable operation of the system can be realized, the power generation efficiency is improved, and meanwhile, the equipment cost is reduced.

The invention relates to a fluidized bed and bubbling bed combined biomass gasification device, which comprises a biomass gasification device, a fuel feeding system, an ignition system, a bed material supply system, a cyclone separator, a special biomass high-temperature gas boiler, an air blower, an induced draft fan and the like. Biomass gas is produced in a mode of combining a fluidized bed and a bubbling bed and is used by a special boiler. According to the device, an existing fixed bed gasification furnace cooling device is omitted, biomass high-temperature fuel gas is used as a medium, more heat is utilized in a rear fuel gas special boiler, and the water cooling jacket cooling loss of the fixed bed gasification furnace is reduced to a great extent. And meanwhile, steam generated by the rear-end boiler is fed into the bubbling bed to further gasify a by-product (charcoal) of fluidized bed gasification reaction, so that more heat energy is released, the biomass gasification efficiency is greatly improved, and the biomass energy is more fully utilized.

The invention discloses a coal underground efficient gasification method based on calcium-based catalyst injection and a carbon dioxide geological storage method. The calcium-based powder material adopts high-purity limestone, wherein the content of calcium oxide is greater than 50%. The method comprises the following steps: crushing a limestone raw material into micron-scale to nano-scale powder, putting the powder into a stirring device, mixing the powder with a coal underground gasification injection agent to obtain a suspension fluid, and injecting the suspension fluid into a coal underground gasification furnace which is in production; calcite minerals in limestone are decomposed into calcium oxide under the coal underground gasification high-temperature effect, and the calcium oxide adsorbs water and carbon dioxide to the surface of coal coke to generate a synergistic gasification reaction at the same time. Wherein the injectant and the calcium-based powder suspension fluid are prepared by adopting a foam suspension device provided with an ultrasonic generator, so that the suspension stability of the calcium-based powder in the suspension fluid is improved. According to the invention, the calcium-based material is injected into the coal underground gasification furnace as the catalyst, so that the moisture, carbon dioxide and carbon in the coal are subjected to co-gasification reaction, the coal underground gasification reaction rate and gasification efficiency can be obviously improved, the environmental pollution is reduced, and the maximum utilization of resources is realized.