66results about "Fixed-bed gasification" patented technology

A method of producing a gas from a combustible material is provided. The method comprises the steps of loading the combustible material into a containment structure and sealing it therein. An oxidant is fed into the sealed containment structure with a controlled flow rate and a controlled rate of movement such that the combustible material is partly converted, thereby leaving behind thermally affected layers of combustible material after the injection point has passed through the material. At least some of the combustible material is converted into molten slag and or char that accumulates as the bottom-most thermally affected layer and subsequently cools and solidifies. The method is characterised in that it further includes the step of discharging solid slag and or char in the bottom-most thermally affected layer from under material that remains in the containment structure to remove solid slag and or char from the containment structure.

An apparatus includes at least one container with at least one carbonaceous material inlet, at an upper end of the container, for providing carbonaceous material into an internal chamber of the container; at least one first carbonaceous material outlet, at a lower end of the container, for removing carbonaceous material from the internal chamber; and at least one gas outlet for removing gas from the internal chamber. The internal chamber includes a first carbonaceous material communication pathway between the carbonaceous material inlet and the first carbonaceous material outlet, and carbonaceous material which travels along the first carbonaceous material communication pathway in use at least passes consecutively through a first reduction zone, a first oxidation zone, and a second reduction zone.

Processes and systems are disclosed for converting animal manure into useful energy and materials. Some variations provide a process for converting animal manure into a purified thermal gas, comprising: drying a starting animal manure in a manure dryer; pelletizing the dried animal manure to generate manure pellets; thermally reacting the manure pellets in a thermal reactor to generate an intermediate thermal gas and a solid biochar; separating out the solid biochar; condensing the intermediate thermal gas to generate a cooled thermal gas; compressing the cooled thermal gas to generate a compressed thermal gas; catalytically reacting the compressed thermal gas in a water-gas shift reactor to generate a shifted thermal gas having an adjusted H2 / CO ratio; treating the shifted thermal gas using an acid-gas removal unit to generate a purified thermal gas; removing water and / or light gases from the purified thermal gas; and recovering or further processing the purified thermal gas.

A rotary grate pyrolysis gasification furnace comprises a furnace body and a plurality of furnace body supporting frames for supporting the peripheral side walls of the furnace body, a smoke outlet is formed in one side of the furnace body, a feeding port is formed in the top of the furnace body, a grate supporting disc is fixedly supported in the furnace body supporting frames below the furnace body, and a rotary grate is rotatably supported on the grate supporting disc. The upper end and the lower end of the rotary fire grate are in rotary sealing connection with the fire grate supporting disc and the lower end of the furnace body through sealing structures correspondingly, the rotary fire grate is driven by a driving device to rotate, a vertical air inlet pipe is arranged in the center in the fire grate supporting disc, and the air inlet end of the air inlet pipe extends out of the fire grate supporting disc. Compared with a traditional fixed bed gasification furnace, the pyrolysis gasification furnace has the advantages that the pyrolysis efficiency is improved by more than 20%, meanwhile, the carbon content of residues is reduced to below 5%, resource waste is reduced, and the energy utilization rate is improved.

The invention relates to the technical field of gasification furnaces, in particular to a UGI gasification furnace control method. Comprising the following steps: S1, slag discharge resistance adjustment: referring to flow-proof plate parameters of fixed bed gasifiers in the same industry; s2, air blowing strategy matching: determining initial air blowing intensity based on the increased total slag discharge resistance in the step S1 according to raw material coal characteristics of the target gasification furnace, and matching corresponding circulation time and in-furnace steam pressure based on the initial air blowing intensity to form an initial air blowing process parameter group; s3, working condition evaluation and collaborative optimization are carried out, economic indexes of operation of the gasification furnace are obtained, and a staged progressive optimization strategy is adopted based on the economic indexes. Through working condition evaluation and collaborative optimization, a staged progressive optimization strategy is adopted to dynamically adjust geometric parameters and blowing strength of the flow prevention structure, and the comprehensive targets of stable furnace conditions, gas production rate improvement and energy consumption reduction can be achieved at the same time. The method is mainly applied to UGI gasifier control.

To provide a pyrolysis type treatment system capable of recovering high-quality oil from a processing object containing oxygen atoms, such as biomass.SOLUTION: A pyrolysis type treatment system comprises: a fluidized bed furnace 40 having a pyrolysis furnace 1 that generates pyrolysis gas by pyrolyzing a processing object, and a medium regeneration furnace 44 that combusts residue of the pyrolyzed processing object; a condensation apparatus 7 that condenses oil components and moisture in the pyrolysis gas to separately recover an oil-water mixture and light gas; a gas separation apparatus 15 that recovers reducing gas from the light gas; a reducing gas transfer line 17 that transfers the reducing gas recovered by the gas separation apparatus 15 to the pyrolysis furnace; and a fuel line 21 that transfers the light gas from which the reducing gas has been separated to the medium regeneration furnace 44.SELECTED DRAWING: Figure 1

The invention is used to thermochemically produce syngas using a fixed-bed shaft reactor (1) that is operated in a co-current mode and has a reaction chamber through which carbon-containing synthetic substances (2) and / or solid biomass particles (3) flow from top to bottom. By continuously adding an oxygen-containing gas (7) in an autothermal gassing process, a raw syngas is produced in the shaft reactor (1) as the gas flows through a fuel pre-heating zone (4), a pyrolysis zone (5), and an oxidation zone (6) arranged downstream thereof, and the syngas is drawn at the lower end of the fixed-bed shaft reactor (9) together with fly ash after additionally flowing through a reduction zone (8). After exiting the reduction zone (8), the raw syngas flows through an entrained-flow zone (12) which is located below the reduction zone (8) in the reactor. In order to improve the efficiency by using the sensible excess heat of the produced syngas, the invention proposes providing an inlet for the oxygen-containing gas (7) below the reduction zone (8), and the walling of the reactor in the entrained-flow zone (12) is designed to be double-walled at least in some regions in the form of a heat exchanger with at least one heat exchanger surface (18), wherein the oxygen-containing gas is conducted through a gas pre-heating zone (17) formed in the heat exchanger such that the outflowing raw syngas is cooled, and the oxygen-containing gas is heated.

A gasification process utilizing carbonaceous feed and, preferably, biomass is disclosed, and the gasification process can implement one or more strategies for generating an aqueous ammonia product having a purity suitable for use in a number of applications, including applications within the overall process, in addition to alkalinity. An exemplary application involves neutralization of a sump and interfaced slag water system. Recovery of this aqueous ammonia product by condensation from the overhead vapor product of the first scrubbing device contact step can be carried out in combination with a scrubbing operation utilizing this scrubbing device contact step, and optionally, a scrubbing device container housing one, two or more additional scrubbing device contact steps, vertically separated by individual aqueous scrubbing device feeds introduced at varying axial heights.

The torrefaction gas treatment device 400 makes it possible to chemically recycle torrefaction gas 202 produced from solid recovered fuel (SRF) pellets 117, etc. by torrefaction, without the need to combust the torrefaction gas 202.

The utility model relates to the field of gasification furnaces, and discloses a dry-type deslagging biomass gasification furnace which comprises a gasification furnace main body, a dismounting assembly is mounted on the lower side of the gasification furnace main body, a vibration assembly is mounted at the bottom of the gasification furnace main body, and the dismounting assembly comprises a side door and a frame. The exterior of the side door is rotatably connected to the exterior of the gasification furnace main body, the exterior of the frame is fixedly connected to the exterior of the gasification furnace main body, an insertion rod is slidably connected to the interior of the frame, an insertion hole is formed in the middle of the insertion rod, a sliding plate is fixedly connected to the right side of the insertion rod, and a first spring is fixedly connected to the right side of the sliding plate; and the top of the frame is slidably connected with a stop lever. According to the side door opening device, the inserting rod is pulled to drive the sliding plate to compress the spring I, so that the inserting rod is separated from the side door, and meanwhile, the stop lever automatically falls down and is inserted into the inserting hole, so that the side door can be quickly opened, tailings in the gasification furnace main body can be conveniently cleaned, and the operation is convenient and labor-saving.

A horizontal gasifier features a closed body (3) with thermal insulation containing a helical feed screw (4) for the feedstock (2), a vertical feed inlet (1) for the feedstock (2) located at one end of the body (3), an inlet (7) for the oxidizing gas (6), and an ash collector (5) at the other end of the body (3), and an outlet (9) for volatile products (8). The gasifier is characterized by a gasification zone (21) in the final section of the body (3), with the shaft (4b) of the helical feeder (4) being completely hollow along its length and equipped with inlet openings (18) for introducing a supplementary portion of oxidizing gas (6) located in a segment extending beyond the body (3) on the side where the feed inlet (1) is located, and outlet openings (20) for this portion of oxidizing gas located in the gasification zone (21).

The present application relates to the technical fields of gasification furnace, and disclose a reciprocating grate gasification furnace, including furnace body, the furnace body is internally provided with gasification cavity, the bottom of the furnace body is provided with air inlet hole in both ends, the both ends of the gasification cavity inner wall is provided with rotation hole and reciprocating groove, the rotation hole is movably sleeved with center roller I, the reciprocating groove is movably sleeved with center roller II.The present application is through the process of shaking of the relative reciprocating motion of grate I and grate II, the transmission rod in sliding cavity can be extruded to move up and compress spring I, make transmission rod through the stretching pull impact column, and make spring II compression energy storage, when the grate I and grate II are separated in the process of shaking, spring I can push transmission rod down, make pull rope relaxation, so that spring II push impact column and hit the blocking material in the air inlet hole, so that the material is broken loose under the impact, so as to complete the cleaning of the air inlet hole.

Waste treatment plant 60 characterized by the fact that it includes: - a first reactor 1 inside which said waste 60 is reacted at a temperature above 500°C in order to obtain a first product 17, and fluidly connected to a first cavitator 4 in which said first product 17 is transformed into at least one first hydrocarbon 64, a second reactor 2 inside which at least a portion of said at least one first hydrocarbon 64 is reacted at a temperature above 500°C in order to obtain a second product 63, and fluidly connected with a second cavitator 9 in which said second product is transformed into a second hydrocarbon 66.

This invention discloses a coal-fired boiler system and process for co-firing biomass gas, belonging to the field of energy conservation and emission reduction technology for coal-fired boilers. Applied to the air inlet side of the main combustion zone of a coal-fired boiler, it includes a gasification device, a sampling device, and a flow control device. Biomass solid fuel and a gasifying agent generate biomass gas in the gasification device. The biomass gas is connected to the flow control device via a pipeline. The flow control device outputs the biomass gas to the perimeter air outlet of the main combustion zone for co-firing. The sampling device is installed on the pipeline between the gasification device and the flow control device to sample and detect the biomass gas. This invention's coal-fired boiler system for co-firing biomass gas ensures efficient utilization of biomass energy while precisely controlling and reducing NO pollutants without altering existing coal-fired boiler technology. x Emissions.

A thermal decomposition-type treatment system is provided with: a fluidized bed furnace (40) having a thermal decomposition furnace (1) for generating a thermal decomposition gas by thermally decomposing an object to be treated, and a medium regeneration furnace (44) for combusting a residue of the thermally decomposed object to be treated; a condensation device (7) that condenses an oil component and moisture in the thermally decomposed gas and recovers an oil-water mixture and a light gas, respectively; a gas separation device (15) for recovering the reducing gas from the light gas; a reducing gas transfer line (17) for transferring the reducing gas recovered by the gas separation device (15) to the thermal decomposition furnace; and a fuel line (21) for transferring the light gas from which the reducing gas has been separated to the medium regeneration furnace (44).

A looping reaction hydrogen production system includes a reduction reaction device, a primary separation device, a hydrogen production reaction device, a secondary separation device, a primary heat transfer device and a cooling purification device. Based on looping combustion reaction mechanism, the system makes MeO / Me circularly flow between the hydrogen production reaction device and the reduction reaction device to respectively generate a reduction / oxidation chemical reaction, and to convert the conventional carbon-based solid fuel into the high-purity clean hydrogen energy. Compared with the conventional hydrogen production technology from water-gas shift reaction of syngas, the system reduces water consumption, energy consumption and environmental pollution of the hydrogen production process; converts conventional carbon-based fuel into clean hydrogen energy by use of renewable energy sources, such as solar energy; and achieves efficient capture and storage of gaseous CO2.

The invention belongs to the technical field of underground coal gasification, and discloses a method and a system for preparing methane-rich coal gas by underground gasification of deep coal. After coal underground gasification enters a normal gasification stage, waste water containing a catalyst is injected into an underground gasification furnace under the conditions of relatively low temperature and high pressure, and the volume percentage content of methane in coal gas is kept to be 35% or above by adjusting the gas-water ratio and / or the position of a gas injection point. The system for realizing the method comprises the underground gasification furnace, the double-layer continuous pipe, the injection device of the double-layer continuous pipe, the variable-frequency water injection pump and the UCG regulation and control unit. The continuous pipe gas inlet is connected with the gasifying agent storage device, and the continuous pipe water inlet is connected with the variable-frequency water injection pump; the underground gasification furnace is connected with the UCG regulation and control unit; the variable-frequency water injection pump is communicated with the catalytic wastewater pool. The stable and necessary process regulation and control method and the operation system for maintaining the production of the methane-rich coal gas from the gasification coal seam are formed, and the methane content in the prepared coal gas is high.

Hybrid drive system with integrated gas generation from carbon-containing solids for supplying a gas engine, comprising: • a solids storage unit, • a metering unit, • a thermal reactor module, • a gas purification unit, • a buffer volume, • a gas engine, • a charging unit, • an exhaust gas recirculation, wherein a combustible gas mixture is generated from the solids and supplied to the gas engine.

2023P07073WO F-5396 21 Abstract It is desirable to design a plant such that it is flexible with respect to the product spectrum and to flexible integration of hydrogen as fuel besides biomass, while5 minimizing the capital costs by e.g. multipurpose reactors. Even on the feedstock side, some flexibility could be useful, i.e. using besides hydrogen also CO2 as feed for the production of storable energy carriers, e.g. hydrocarbons, while using the stored energy carrier at least as partial10 feedstock in times when hydrogen production is desired. This objective is achieved according to the present invention by a method / system for producing hydrogen and / or methanol, comprising :15 a) thermochemically converting in terms of gasification and / or pyrolysis a carbonaceous feedstock from biomass or wastes yielding a product gas that comprises at least CO, H2 and optionally unsaturated hydrocarbons, such as ethylene, acetylene, benzene;20 b) optionally providing a gas cleaning section to remove catalyst poisons, e.g. Sulphur species, from the product gas; c) bringing the product gas into a fluidized bed reactor and reacting the product gas in the presence of a25 catalyst and / or a sorbent based on e.g. copper, molybdenum and / or iron that supports the conversion of CO and H2O to hydrogen and CO2 or to methanol depending on the operation conditions that are controllable in terms of the catalyst and / or sorbents used and / or the30 pressure and / or the temperature and / or the heat exchange in the fluidized bed reactor; d) guiding the reacted product gas to an upgrading section that comprises a particle filter, an optional 2023P07073WO F-5396 22 condensation step and at least one separation unit, such as a membrane, a scrubber, an absorption, a pressure swing adsorption or a temperature swing adsorption, a chemisorption, a liquefaction or combinations thereof, thereby separating a hydrogen-5 rich stream or a methanol-rich stream from the effluent of the fluidized bed reactor. This method and this system thus allow to use one single fluidized bed reactor to flexibly decide for the production10 of hydrogen or methanol thereby enabling a production that for example is enabled to reflect the availability of green hydrogen and / or renewable energy. FIG.115

The invention relates to the technical field of gasification furnaces, and particularly discloses an energy-saving environment-friendly high-temperature gasification furnace with solid waste treatment and low emission characteristics, which comprises a gasification furnace body, a bottom plate arranged at the bottom of the gasification furnace body, a solid waste cylinder arranged at the bottom of the bottom plate, a fire grate arranged at the top of the bottom plate, a grate plate arranged at the bottom of the fire grate, and a discharge plate arranged on the outer circumference of the grate plate, a solid waste opening communicated with the solid waste barrel is formed in the bottom plate on the outer side of the fire grate, a rotating barrel is arranged in the solid waste barrel, the top of the rotating barrel is connected with the grate plate, and the lower end of the rotating barrel penetrates through the solid waste barrel through a shaft hole to be connected with a rotating mechanism. By arranging a series of structures, the gasification furnace integrates solid waste crushing and high-temperature solid waste waste heat heating gasification agent, is uniform in dispersed feeding and particle size, uniform and sufficient in substance gasification in the gasification furnace, high in gasification rate and low in solid waste discharge amount and substance energy consumption, and has the characteristics of solid waste treatment and low discharge; and the gasifying agent is uniformly heated.

The invention discloses a method for preparing synthesis gas with high methane content through coal gasification. The method comprises the following steps: mixing a solid-phase catalyst with pulverized coal, adding the mixture into a gasification furnace, heating the mixture to 300-550 DEG C at a rate of 5-10 DEG C / min, and keeping the temperature for 1-2 hours; then heating to 600-750 DEG C, keeping the temperature for 1-2 hours, and continuously spraying the atomized liquid-phase catalyst; heating to 800-1100 DEG C, and keeping the temperature for 1-2 hours; continuously spraying the atomized liquid phase catalyst; cooling, and reacting in the fixed bed reactor to obtain high-methane-content synthesis gas with the methane volume fraction of more than or equal to 55%; the solid-phase catalyst adopts a rare earth-transition metal chloride composite system, the liquid-phase catalyst stabilizes metal ions through a chelating agent, the methane selectivity and the carbon conversion rate are synergistically improved, and the method has the characteristics of high catalytic efficiency, good catalyst stability, excellent economical efficiency and the like.

The present invention concerns a process for utilizing at least one waste stream from a production plant for aqueous polymer dispersions from at least one type of monomer M, in which reaction residues are separated from water. Said reaction residues are optionally converted into a pyrolysis oil by a pyrolysis process, which pyrolysis oil is then converted by a gasification process into synthesis gas or said separated reaction residues as such are converted into synthesis gas by a gasification process. The synthesis gas may be used for synthesis of monomers M. The present invention further concerns a production plant for aqueous polymer dispersions comprising an integrated reaction residue treatment facility which is suited for said process.

The present invention concerns a process for manufacture of C6−C8 aromatic hydrocarbons from pre-sorted fractions from end-of-life vehicles (first feedstock) using at least one gasifier. Said first feedstock F1 and a second feedstock are converted in at least one gasifier into a first raw synthesis gas RSG1, wherein said first raw synthesis gas RSG1 comprises CO, H2, and C6−C8 aromatic hydrocarbons. Next, said C6−C8 aromatic hydrocarbons are removed from said first raw synthesis gas RSG1 by a gas cleaning process GC in a gas cleaning unit GCU, whereby a clean first synthesis gas CSG1 and a first liquid residue LR1 are formed. Next, an aromatic stream AS and a second liquid stream LR2 are removed from said first liquid residue LR1 in an aromatic hydrocarbon extraction unit AEU, wherein said aromatic stream AS is enriched in C6−C8 aromatic hydrocarbons and wherein said second liquid stream LR2 is depleted in C6−C8 aromatic hydrocarbons.

The application discloses a low-temperature biomass gasification furnace and a dry carbon and fuel gas coupling boiler process, and belongs to the technical field of biomass gasification furnaces. The low-temperature biomass gasification furnace comprises a top plate, an upper cylinder, a middle cylinder, a lower cylinder and a discharging cylinder, the top plate, the upper cylinder, the middle cylinder, the lower cylinder and the discharging cylinder are sequentially arranged from top to bottom, and the top plate, the upper cylinder, the middle cylinder, the lower cylinder and the discharging cylinder are connected through assembly, the outside of the gasification furnace body is supported by a supporting unit, and a discharging unit connected through an auxiliary transition cylinder is arranged at the bottom of the gasification furnace body and used for discharging. The application has the beneficial effects that the auxiliary transition cylinder is clamped with the outside of the discharging cylinder of the gasification furnace body, a stable transition channel is provided for carbon residues, the carbon residues falling from the discharging cylinder can smoothly enter the inside of an auger conveyor, and the carbon residues are prevented from being accumulated, blocked or splashed outward at a discharging port, so that the overall structure of the equipment is more compact and reasonable.

The present invention concerns a process for gasification of biomass with reduced fouling of the gasification equipment in which at least one pretreated first feedstock F1 having a deformation temperature of 700 to 1000 °C (determined according to ISO 540:1995) and at least one pretreated second feedstock F2 having a deformation temperature of 1100 to 2000 °C are converted in at least one gasifier into synthesis gas. The present invention further concerns a production plant for converting agricultural residues from fast growing plants into synthesis gas which is suited for said process.

The application relates to a process for producing synthesis gas from at least partially biogenic feedstocks, comprising pyrolysis of the biogenic feedstock at a temperature of 250 °C to 700 °C, feeding the pyrolyzed solids via an intermediate zone to a gasification zone, wherein combustion gases containing at least water and oxygen are passed through the gasification zone at a temperature of 600 to 1200 °C in the opposite direction to the feed direction of the pyrolyzed solids, so that gasification of the pyrolyzed solids occurs and gasification gases and ash are formed, with the pyrolysis gases and the gasification gases being fed to a reforming zone where the gas mixture is contacted with a bed of catalyst at a temperature of 500 °C to 950 °C, and wherein synthesis gas is obtained. The application further relates to an installation for carrying out this process.

The present invention relates to the processing of carbonaceous materials, inter alia, for hydrogen production. In particular, the present invention relates to the production of hydrogen, for example as an input for industrial manufacturing applications or as a fuel source for associated power generation. In one form, the present invention provides a method of producing hydrogen, comprising reacting a combination of a solid carbonaceous material and a catalyst comprising an alpha-phase iron-based material adapted to undergo an exothermic reaction with the solid carbonaceous material.

This utility model discloses a rotary grate for a gasifier, belonging to the technical field of gasifiers. It includes a support base, a grate seat rotatably connected to the support base, a gasifier body mounted on the grate seat, a conical groove at the top of the grate seat, and a spiral guide plate fixedly connected to the inner cavity of the gasifier body. The bottom surface of the spiral guide plate is in contact with the top surface of the conical groove. A cleaning mechanism is provided on the grate seat. In this utility model, when the grate seat rotates, it drives the support plate and the annular bevel gear seat to rotate. The meshing transmission between the annular bevel gear seat and two bevel gears drives the chopping shaft and chopping blade to rotate. The chopping blade crushes the material conveyed in the preheating zone, preparing it for subsequent pyrolysis. Simultaneously, the support plate and protective cover protect the annular bevel gear seat and bevel gears, preventing material and waste from falling onto them. This design is highly practical.

Provided herein is a gasifier, preferably a fixed bed, slagging, updraft oxygen gasification reactor or gasifier with features to facilitate gasification of heterogeneous waste streams producing a syngas with minimal level of condensable tars whilst simultaneously removing molten slag from the bottom of the bed via a cooled slag collector ("CSC"); syngas and other compositions produced therefrom; and processes including it.

The CO shift unit 500 as part of a plant 1 for converting solid waste to a product gas stream containing hydrogen allows low temperature thermal energy in the low temperature heat recovery unit 524 to be used in an energy efficient manner to heat the treated water stream used in the plant 1.