798results about "Gasification processes details" patented technology

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.

Process and plant for producing methanol, the process comprising the steps of: a) providing a raw synthesis gas stream; b) water gas shifting at least a portion of the raw synthesis gas stream, thereby producing a shifted synthesis gas; c) preparing a separate hydrogen containing stream and a separate oxygen containing stream by electrolysis of a water feedstock; d) introducing at least a portion of the separate hydrogen containing stream into shifted synthesis gas, thereby producing a methanol synthesis gas; and e) converting the methanol synthesis gas into said methanol.

The invention provides a polygeneration system and method for coupling wind-solar hydrogen production with CO2 capture and utilization, and relates to the technical field of green energy. The system comprises a renewable energy source driving subsystem used for providing green electric energy and preparing green hydrogen as an energy carrier and a synthetic raw material to be supplied to a multi-path utilization subsystem; the carbon source conversion and capture subsystem is used for receiving the biomass raw material, generating gasified synthesis gas and biomass charcoal through gasification reaction, and capturing and recycling CO2 in flue gas discharged by the system; the multi-path utilization subsystem is used for receiving H2, the gasified synthesis gas and CO2 and blending reaction components to realize synthesis of green methanol, conventional methanol and green ammonia; closed-loop circulation of carbon resources is formed among the subsystems through continuous conversion, capture and feedback paths of H2, CO2 and biomass charcoal. According to the scheme, efficient synergistic conversion of hydrogen and carbon resources and full-amount utilization of carbon elements can be achieved in regions with limited carbon sources.

The invention relates to the technical field of steel sintering processes, in particular to a biomass gasification coupling system for a steel sintering process, which comprises a biomass gasification system, a circular cooler waste heat utilization system and a waste heat power generation system, the biomass gasification system comprises a biomass drying system, a raw material conveying belt system, a biomass gasification furnace, a biomass gas heat insulation combustion chamber, a sintered coke powder preparation system and a biomass gas purification system, and the biomass drying system is used for drying biomass raw materials; and the dried biomass raw materials are conveyed to the biomass gasification furnace through the raw material conveying belt system. According to the coupling system for biomass gasification for the steel sintering process and the control method, biomass serves as zero-carbon energy, and biomass charcoal obtained after biomass gasification can replace part of solid fuel to achieve the carbon reduction effect. Meanwhile, the biomass gasified gas can replace a part of coal gas, and the carbon reduction effect can also be achieved.

The present invention provides a biomass gasification control system and a biomass gasification control method, and belongs to the field of biosynthesis, the biomass gasification control system comprises: a first-stage fluidized bed pyrolysis reactor for performing a preliminary pyrolysis reaction on a biomass raw material to obtain a pyrolysis reactant; the second-stage fluidized bed gasification reactor is used for carrying out gasification reaction on the pyrolysis reactant by utilizing various gasification agents to obtain target synthesis gas, including H2 and CO; wherein the multiple gasifying agents comprise oxygen, water vapor and carbon dioxide; the sensor monitoring module is used for monitoring real-time state data in the first-stage fluidized bed pyrolysis reactor and the second-stage fluidized bed gasification reactor; the central control module is used for sending out an adjusting instruction according to the real-time state data, and the adjusting instruction is used for adjusting and controlling the flow of the multiple gasifying agents, the rotating speed of the fan and the reaction temperature, so that the molar ratio of H2 to CO in the generated target synthesis gas is within a first threshold value range.

Methods and systems are provided for the conversion of waste plastics into various useful downstream recycle-content products. More particularly, the present system and method involves pyrolyzing one or more waste plastics into various pyrolysis products, including a carbon solids-containing pyrolysis residue, and then subjecting the pyrolysis residue to partial oxidation gasification to thereby form a syngas composition.

A system comprising a gasifier comprising one or more burners configured to accept a carbonaceous fuel and an oxidant to produce a syngas and a molten slag; a throat configured to accept the syngas and molten slag from the gasifier; and a radiant syngas cooler positioned below the gasifier configured to accept the syngas and molten slag from the throat; wherein the throat comprises an outer wall and one or more fins extending radially inwards from the outer wall.

The present application 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 collaborative control method, which comprises the following steps: 1) biomass raw materials are fed into a vertical multi-stage decoupling gasification furnace for gasification, a gasification agent and water vapor are introduced into the decoupling gasification furnace, the amount of the gasification agent and water vapor introduced is adjusted, and the temperature in the reduction zone is controlled at 700-900 DEG C; 2) the gasification products of the decoupling gasification furnace are cooled by a heat exchanger, then filtered by a filter I for the first time, water is removed by a steam-water condenser separator, pressurized by a Roots blower, filtered by a filter II for the second time, and then fed into an internal combustion engine for power generation; and 3) the gas discharged from the internal combustion engine is pressurized by an exhaust gas turbocharger, then compressed by a compressed air generator, and then fed into the decoupling gasification furnace as a gasification agent. The present application has the advantages that the present application can realize in-situ high-temperature catalytic cracking of tar, efficient utilization of waste heat, and stable operation of the system, thereby improving the power generation efficiency and reducing the equipment cost.

In view to the technical problems of low recovery rate of metal elements in metallurgical slag and the problem of inefficient recovery of residual heat of metallurgical slag generated by traditional technology, the present application provides a technology and method for preparing microporous-rich metallurgical slag particles based on carbon etching and efficiently recovering residual heat of metallurgical slag in coal gasification, mainly including four parts of granulation system, etching powder adhesion system, etching gasification system and screening separation system which are sequentially connected, and mainly through four steps of molten metallurgical slag granulation, etching powder adhesion, etching gasification reaction, screening and separation, the efficient recovery and utilization of residual heat of metallurgical slag and the high value conversion of metallurgical slag particle products are realized. The utilization value of metallurgical slag particles is increased by 10-15 times through the system.

The present invention is directed to a dry tomb biolandfill for biological carbon sequestration, and more particularly compositions of a biolandfill containing a salt biomass composite.

This invention provides a method for generating high-temperature coal gas based on an electric arc plasma torch, comprising the following steps: feeding carbon-containing powder and at least one energy-carrying medium into different inlets of the electric arc plasma torch; the carbon-containing powder being carried circumferentially and uniformly into the arc channel within the electric arc plasma torch by a carrier gas; the at least one energy-carrying medium, after entering the electric arc plasma torch, passing through a fluid passage on the arc channel wall and entering the arc channel; initiating an electric arc in the arc channel to generate plasma; the energy-carrying medium and the carbon-containing powder being heated together by the plasma, and then ejected together from the nozzle of the electric arc plasma torch. This invention utilizes the energy-carrying medium to perform divergent cooling, evaporative cooling, or endothermic chemical reactions near the arc channel wall, directly absorbing the radiation and convection heat transfer to the pipe wall from the plasma, greatly improving the thermal efficiency of the plasma torch, and inhibiting coking of the gasified carbon-containing powder on the arc channel wall of the plasma torch.

The application discloses a device and method for preparing green hydrogen through biomass pyrolysis and gasification, relates to the technical field of green hydrogen preparation, and solves the problems of blockage and corrosion caused by ash melting and slagging in the pure oxygen gasification process, and the problem of low energy utilization rate. The device for preparing green hydrogen through biomass pyrolysis and gasification comprises a pyrolysis reaction device, and the pyrolysis reaction device comprises a pyrolysis reaction tank connected with a high-temperature heat carrier conveying spiral, a biomass raw material storage bin, a biomass raw material conveying spiral and a pyrolysis solid-phase product conveying spiral. In the application, biomass raw materials are converted into biochar and pyrolysis oil gas through pyrolysis technology, the biomass ash is effectively cut, and problems such as blockage and corrosion caused by ash melting and slagging in the pure oxygen gasification process are effectively avoided; the high-temperature pyrolysis oil gas is directly subjected to pure oxygen gasification reaction through gasification technology, the sensible heat and latent heat in the pyrolysis oil gas are fully utilized, and the energy utilization rate is high.

The invention discloses an integrated biomass carbonization powder making device and method, and the device comprises a raw material storage bin which is connected with a hopper and conveys a biomass material to an exhaust gas heat recovery bin through the hopper; the exhaust gas heat recovery bin is used for heating the biomass material through exhaust gas and then conveying the biomass material to the carbonization and powder preparation integrated equipment; according to the carbonization and powder preparation integrated equipment, biomass materials are ground and heated through a coal mill, the materials with the granularity meeting the first condition are conveyed to a baking pipe through hot air and baked in the baking pipe, and the baked powder meeting the second condition is conveyed to a filter through hot air; the filter conveys the filtered powder to the gasification furnace through conveying equipment, and the filtered gas is output to the exhaust gas heat recovery bin and the inert gas generator through a gas circulating pipeline; the inert gas generator is connected with the carbonization and powder preparation integrated equipment and outputs heated gas to the coal mill and the baking pipe.

A method and an apparatus for treating comminuted waste material the method comprising: •a) providing a heating chamber (28) and one or more combustion heating means (40a-f) for heating the contents of the heating chamber (28), the heating chamber (28) having an inlet (21) and an outlet (22), •b) feeding comminuted waste material through the inlet (21) and into the heating chamber (28); •c) heating the comminuted waste material in the heating chamber (28), using the combustion heating means (40a-f), to generate a combustible gas; and •d) supplying at least a portion of the generated combustible gas to the one or more combustion heating means (40a-f) for heating the heating chamber (28).

The invention discloses a solar-driven biomass pyrolysis-gasification energy utilization system running day and night. The system comprises a biomass pyrolysis-gasification subsystem and a solar spectral photovoltaic water electrolysis subsystem. According to the system, solar frequency division heat collection, high-temperature synthesis gas sensible heat and ash residue waste heat are absorbed and stored in a gradient mode through molten salt and are used for providing heat needed by biomass pyrolysis reaction; in the daytime, the system provides heat required by high-temperature gasification reaction through solar full-spectrum light condensation, and the heat is provided by combustion of part of pyrolysis products when no light exists at night. According to the system, by integrating various energy utilization technologies such as solar full spectrum and spectral utilization, biomass gasification, photovoltaic power generation and waste heat utilization, coupling utilization of two renewable energy sources of solar energy and biomass energy and gradient utilization of energy are achieved, and the energy utilization efficiency of an energy system and the quality of synthesis gas are effectively improved.

The invention relates to the technical field of catalyst sulfuration in a coal gasification process, and particularly discloses a method for sulfuration of a shift catalyst by adding sulfur into low-sulfur coal, and the method comprises the following steps: fully mixing byproduct sulfur with boiler slag by adopting an internal mixing process to prepare a slag-sulfur mixture; fully and uniformly mixing the slag-sulfur mixture with low-sulfur coal, and feeding the mixture into a coal mill for milling to obtain pulverized coal; the method comprises the following steps: in a coal gasifier, carrying out online vulcanization on a shift catalyst by using pulverized coal, setting slag sampling once every half an hour after adding a slag-sulfur mixture, and monitoring the H2S concentration, the ash water pH value and the sulfate radical concentration in the synthesis gas in real time. According to the method, the by-product sulfur and the boiler slag are subjected to banburying compounding to prepare the slag-sulfur mixture, the slag-sulfur mixture and the low-sulfur coal are uniformly mixed in proportion to prepare powder, and by controlling the outlet temperature of the coal mill, the circulating air volume and the pressurized conveying temperature, the stable combustion of the coal powder and the on-line vulcanization of the shift catalyst are realized.

The automatic feeding device comprises a material conveying pipe, a driving motor is installed at one end of the material conveying pipe, the output end of the driving motor is connected with a material conveying mechanism installed in the material conveying pipe and used for conveying fuel, a feeding opening is formed in the upper side of the material conveying pipe and used for feeding, and a feeding opening is formed in the lower side of the material conveying pipe. A discharging opening is formed in the lower side of the end, away from the feeding opening, of the conveying pipe; and the conveying mechanism comprises a mounting rod, the interior of the mounting rod is hollow, and a fixed spiral blade is fixedly mounted on the outer side of the end, facing the driving motor, of the mounting rod. The device at least has the following beneficial effects that a complete conveying auger is composed of the fixed spiral blades and the movable spiral blades, the movable blocks are driven by air pressure to be in chain type linkage, the spiral blades are periodically separated and recombined, arch hard blocks are forcibly broken, and the sealing cavity cooperates with the air pump and the hydraulic rod; and reliable dredging under the working condition of large resistance is ensured.

A thermochemical energy conversion unit includes a heat expansion assembly including a reactor configured to receive a biomass and convert the biomass into a burnable gas having undesirable materials therein and a biochar. The heat expansion assembly also includes a heat expansion discharge pipe configured to discharge the burnable gas from the heat expansion assembly. The thermochemical energy conversion unit also includes a gas scrubber assembly operatively connected to the heat expansion assembly and configured to receive the burnable gas therefrom and to remove the undesirable materials from the burnable gas. The gas scrubber assembly includes a scrubber discharge pipe configured to discharge the burnable gas from the gas scrubber assembly. The heat expansion assembly and the gas scrubber assembly are configured to be continuously fluidly connected from the heat expansion discharge pipe to the scrubber discharge pipe for generating a continuous flow of the burnable gas therealong.

The invention discloses a biomass gasifier with a waste cleaning function, and relates to the technical field of biomass gasifiers, the gasifier comprises a gasifier body, a water-cooling slag discharge cabin, a sound wave ash removal device and a cyclone dust removal device, a heating block is arranged in the gasifier body, the heating block heats and incinerates biomass raw materials in the gasifier, and the water-cooling slag discharge cabin and the sound wave ash removal device are communicated with the cyclone dust removal device. The sound wave ash cleaning device is arranged above the gasification furnace body and is used for cleaning accumulated ash and wall-hung objects in the gasification furnace body, the water-cooling slag discharging cabin is arranged below the gasification furnace body, a surrounding type water-cooling interlayer is arranged on the wall of the cabin body of the water-cooling slag discharging cabin, and the water-cooling interlayer realizes local cooling through an external circulating water system. The cyclone dust removal device is connected with the gasification furnace body through a pipeline, and combustible gas generated by combustion of biomass raw materials in the gasification furnace body is filtered by the cyclone dust removal device and then discharged. Efficient cooling of waste materials is achieved through the water-cooling deslagging cabin, and the effect of avoiding damage of high temperature to a deslagging system is achieved.

The invention relates to the technical field of coal chemical industry, in particular to a method for evaluating the slag quantity of a dry pulverized coal gasifier in real time, which comprises the following steps: arranging a thermometer in a slag pool of the dry pulverized coal gasifier, arranging a thermometer and a flowmeter behind a quenching water heat exchanger, and arranging a regulating valve on a cooling water outlet pipeline of the quenching water heat exchanger; adjusting the outlet flow Q of the slag water circulating pump to be a constant value according to the reading of the flowmeter; the temperature t of the quenching water after the quenching water heat exchanger is controlled to be a constant value by using a regulating valve and a temperature controller of a cooling water outlet pipeline; based on the principle that the specific heat capacity of quenching water and molten slag and the temperature of the molten slag before quenching are constant, the real-time slag production amount of the gasifier is calculated through a preset formula, the method for evaluating the slag production amount of the dry pulverized coal gasifier in real time can evaluate the slag production amount of the dry pulverized coal gasifier in real time, guide personnel to carry out as-fired coal operation adjustment, and improve the slag production amount of the dry pulverized coal gasifier. Frequent fluctuation of the slag yield of the gasifier is avoided, and safe and stable operation of the burner cover and the slag conveyor is ensured.

The invention belongs to the technical field of biomass energy, and discloses an energy system based on biomass gasification, which is characterized in that biomass is converted into high-temperature synthesis gas flow by a gasification furnace, the high-temperature synthesis gas flow enters a carbon dioxide supercritical device to heat carbon dioxide fluid into supercritical fluid so as to drive power generation, and medium-high-temperature synthesis gas flow is formed; the medium-high-temperature synthesis gas flow enters the organic Rankine cycle device to heat and evaporate the organic fluid into high-enthalpy fluid to drive power generation and form medium-low-temperature synthesis gas flow, and the medium-low-temperature synthesis gas flow enters the seawater desalination device to evaporate and separate seawater into fresh water and saline water and form low-temperature synthesis gas flow; the methanol synthesis device captures hydrogen and carbon dioxide in the low-temperature synthesis gas flow and synthesizes methanol; electric energy and fresh water are obtained through stepped utilization of heat energy of synthesis gas flow, the energy utilization rate is greatly improved, hydrogen energy is obtained by capturing hydrogen in the synthesis gas flow, and carbon dioxide in the synthesis gas flow is further captured to synthesize methanol with the hydrogen.

The invention relates to the technical field of biomass treatment, in particular to a biomass gasification system and a biomass gasification method. The biomass gasification system comprises a gasification furnace which is provided with a furnace body, a biomass inlet communicated with the furnace body, a gasification agent inlet and a crude synthesis gas outlet; an inlet of the waste heat boiler is communicated with the crude synthesis gas outlet, and an outlet of the waste heat boiler is connected with a negative pressure device; an inlet of the dust remover is communicated with the negative pressure device, and an outlet of the dust remover is connected with a cooling device. The biomass and the gasifying agent are gasified and reacted in the gasifier to generate crude synthesis gas, the crude synthesis gas is discharged after being dedusted by the deduster and cooled by the cooling device in sequence under the negative pressure environment provided by the negative pressure device, and due to the arrangement of the negative pressure device, the atmospheric pressure in the system is always lower than the atmospheric pressure outside the system; therefore, the synthesis gas generated in the system cannot be leaked, but is discharged from a unified outlet after being treated, so that the normal operation of equipment is ensured, and the potential safety hazard is reduced.

The invention relates to the technical field of biomass gasification furnaces, and discloses a biomass gasification furnace with a sealed drying system, the biomass gasification furnace comprises a biomass gasification furnace, the lower surface of the biomass gasification furnace is provided with a connecting pipe, and the top of the biomass gasification furnace is provided with a sealing part; the sealing component comprises a fixing plate, the end of the fixing plate is fixedly connected with the surface of the biomass gasifier, the top of the fixing plate is fixedly connected with a hydraulic rod, the telescopic end of the hydraulic rod is fixedly connected with a linkage plate, and the end, away from the hydraulic rod, of the linkage plate is fixedly connected with a lifting disc. When a hydraulic rod moves, a linkage plate is connected with a lifting disc to drive a sealing disc to move upwards, when the sealing disc moves, the sealing disc is separated from the inner wall of the biomass gasification furnace, and at the moment, biomass raw materials can be put into the biomass gasification furnace to be subjected to drying combustion treatment; and the hydraulic rod moves downwards to push the sealing disc to enter the biomass gasification furnace, and the sealing disc is used for sealing the top of the biomass gasification furnace.

A system for processing solid waste including a segmented gasifier having a first segment detachably connected to a second segment, and a burner positioned downstream of the segmented gasifier and coupled to the segmented gasifier. A process for treating solid waste including introducing the solid waste into a first end of a segmented gasifier having a first segment detachably connected to a second segment. Gasifying the solid waste as it traverses from the first end of the gasifier to a second end of the segmented gasifier, and producing a gaseous output and a solid output at the second end of the segmented gasifier. Separating the gaseous output and the solid output, and introducing a portion of the gaseous output to a burner and recycling a portion of the gaseous output to the segmented gasifier as an energy source.

A method of processing a material comprising: receiving an input material to be processed within a reaction chamber, the input material comprising a biosolids material; energizing one or more sets of electrodes, each set of electrodes including an anode electrode and a cathode electrode, each anode electrode and cathode electrode having an electrode tip exposed to the reaction chamber; and creating an electrical arc between the anode electrode tip and the cathode electrode tip within the reaction chamber to subject at least some of the input material to electrical arcing, thereby reacting at least a portion of the biosolids material and forming a processed material comprising hydrogen (H2) and carbon monoxide (CO).

A combined vessel includes a stripping section for removing acidic gases from an acidic water stream and a direct-contact heat exchanger section for heating an ash water stream, to improve heat and mass transfer in water stream treatment and recirculation for gasification processes.

The invention discloses a large-scale biomass gasification system, which comprises a biomass gasification furnace, a combustion chamber, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe and a gas outlet pipe, the burner is arranged at the top of the combustion chamber, and the burner comprises a fuel gas pipe, an oxygen feeding pipe and a plurality of feeding pipes; the conveying system comprises a normal-pressure powder storage bin and a plurality of powder supply modules corresponding to the feeding pipes in number, each powder supply module comprises a feeding tank and at least one variable-pressure lock hopper, and a feeding port and a discharging port of each variable-pressure lock hopper communicate with the normal-pressure powder storage bin and the feeding tank correspondingly; according to the large-scale biomass gasification system, materials are alternately conveyed and stored through the multiple sets of independent powder supply modules, large-scale continuous production is achieved, the invention further discloses a using method of the large-scale biomass gasification system, and continuous production of a biomass gasification furnace can be achieved.

Gasification processes are disclosed, which can implement one or more strategies for heating and humidifying the gasifier effluent, as needed for effective hydrogen enrichment through the water-gas shift (WGS) reaction that converts H2O. Particular aspects, in carrying out these strategies, relate to the use of an evaporator upstream of a WGS reactor and operating at a comparable pressure (e.g., at least about 10 bar, at least about 20 bar, or at least about 30 bar, such as in a range from about 30 bar to about 100 bar). Such high-pressure evaporator may provide sufficient water vapor content, for effective generation of H2 via the WGS reaction, as needed for downstream uses. Advantageously, heat and / or material (e.g., condensate) sources may be available within the process itself, and integrated to meet at least some of the operational demands of the evaporator.

The present disclosure provides a slag cooling device, a slag cooling system and a slag discharging method. In one aspect, the slag cooling device comprises a shell, the internal space of the shell is divided into a feeding area, a cooling area and a discharging area from top to bottom; a heat exchange unit is arranged in the cooling area and used for cooling slag from the feeding area; a lower distributor is arranged in the discharging area and used for controlling the uniform distribution of slag from the cooling area to the discharging area, and simultaneously bearing the gravity of slag in the feeding area and the cooling area, so as to avoid the compaction of slag and the failure of a slag flow regulating valve.

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.