WO1999031202A1 - Fuel gasifying system - Google Patents
Fuel gasifying system Download PDFInfo
- Publication number
- WO1999031202A1 WO1999031202A1 PCT/JP1998/005740 JP9805740W WO9931202A1 WO 1999031202 A1 WO1999031202 A1 WO 1999031202A1 JP 9805740 W JP9805740 W JP 9805740W WO 9931202 A1 WO9931202 A1 WO 9931202A1
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- WIPO (PCT)
- Prior art keywords
- chamber
- gasification
- gas
- combustion chamber
- combustion
- Prior art date
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/482—Gasifiers with stationary fluidised bed
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
- C10J3/56—Apparatus; Plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
- F23G5/0276—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage using direct heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
- F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/30—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having a fluidised bed
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0916—Biomass
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0946—Waste, e.g. MSW, tires, glass, tar sand, peat, paper, lignite, oil shale
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/095—Exhaust gas from an external process for purification
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0956—Air or oxygen enriched air
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0983—Additives
- C10J2300/0996—Calcium-containing inorganic materials, e.g. lime
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/12—Heating the gasifier
- C10J2300/1215—Heating the gasifier using synthesis gas as fuel
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1625—Integration of gasification processes with another plant or parts within the plant with solids treatment
- C10J2300/1628—Ash post-treatment
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1625—Integration of gasification processes with another plant or parts within the plant with solids treatment
- C10J2300/1628—Ash post-treatment
- C10J2300/1634—Ash vitrification
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1625—Integration of gasification processes with another plant or parts within the plant with solids treatment
- C10J2300/1637—Char combustion
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/164—Integration of gasification processes with another plant or parts within the plant with conversion of synthesis gas
- C10J2300/1643—Conversion of synthesis gas to energy
- C10J2300/165—Conversion of synthesis gas to energy integrated with a gas turbine or gas motor
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1671—Integration of gasification processes with another plant or parts within the plant with the production of electricity
- C10J2300/1675—Integration of gasification processes with another plant or parts within the plant with the production of electricity making use of a steam turbine
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1687—Integration of gasification processes with another plant or parts within the plant with steam generation
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
- C10J2300/1861—Heat exchange between at least two process streams
- C10J2300/1876—Heat exchange between at least two process streams with one stream being combustion gas
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
- C10J2300/1861—Heat exchange between at least two process streams
- C10J2300/1892—Heat exchange between at least two process streams with one stream being water/steam
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/30—Pyrolysing
- F23G2201/303—Burning pyrogases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/30—Pyrolysing
- F23G2201/304—Burning pyrosolids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/40—Gasification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2202/00—Combustion
- F23G2202/30—Combustion in a pressurised chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2203/00—Furnace arrangements
- F23G2203/50—Fluidised bed furnace
- F23G2203/502—Fluidised bed furnace with recirculation of bed material inside combustion chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/20—Waste heat recuperation using the heat in association with another installation
- F23G2206/202—Waste heat recuperation using the heat in association with another installation with an internal combustion engine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Definitions
- the present invention relates to a gasifier for a fuel such as coal and municipal waste and a gasification system using the same.
- IGCC Integrated Gasification Combined Cycle
- high-efficiency power generation technology which has attracted attention in recent years, simply generates as much gas as possible at the upper limit of the gas temperature at the inlet of the gas turbine to increase the power output ratio from the gas turbine.
- Things Typical examples are a topping cycle power generation system and a power generation system using an improved pressurized fluidized bed furnace.
- the power generation system using the improved pressurized fluidized bed furnace first gasifies coal in a pressurized gasifier and burns the generated unburned carbon (so-called char) in a pressurized char-burner. After cleaning the combustion gas from the char combustor and the gas generated from the gasifier, respectively, the topping combustor mixes and combusts to obtain high-temperature gas to drive the gas turbine. What is important in this pressurized fluidized-bed furnace power generation system is how to increase the flow rate of the gas flowing into the gas turbine. Leaning:
- Cleaning of the generated gas usually requires cooling to about 450 ° C due to the optimal temperature of the desulfurization reaction in a reducing atmosphere.
- the higher the gas temperature at the inlet of the gas turbine the higher the efficiency. Therefore, the temperature should be as high as possible.
- the system needs to be produced in the direction of obtaining as little gas as possible and with a high unit heating value. Development should proceed.
- the reason is that if the amount of generated gas to be cleaned at 450 ° C is reduced, the sensible heat loss due to cooling is reduced, and the minimum required calorific value of the generated gas is also reduced. Furthermore, if the calorific value of the generated gas is higher than the calorific value required to raise the required gas temperature at the gas turbine inlet, the combustion air ratio can be increased to increase the amount of gas flowing into the gas turbine. Therefore, further improvement in power generation efficiency can be expected.
- the two-tower circulation gasifier is composed of two furnaces (towers), a gasifier and a char combustion furnace, and circulates a fluid medium and a charcoal between the gasifier and the char furnace to produce gas.
- the required amount of heat is to be supplied to the gasifier with the sensible heat of the fluidized medium heated by the combustion heat of the char in the char furnace.
- the two-tower circulation method has a sufficient Due to the issues of handling high-temperature particles, such as securing the amount of particles circulated, controlling the amount of particles circulated, and stable operation, and the operational problem that the temperature control of the charcoal combustion furnace cannot be performed independently of other operations, large-scale actual equipment It did not lead to construction.
- the entire combustion gas from the charcoal combustion furnace will be led to the gasification furnace to compensate for the amount of heat for gasification, which tends to be insufficient just by supplying sensible heat by circulating particles. Has been proposed.
- the temperature control of the charcoal combustion furnace changes the height of the bed and changes the heat transfer area in the bed.When the load is low, combustion is performed by the heat transfer tubes exposed above the bed. Since the gas is cooled, the temperature and fluidization rate of the gasifier changes, which affects the gasification reaction rate, making it difficult to operate the system stably.
- the present inventors have developed an integrated gasification furnace in which a gasification chamber, a char combustion chamber, and a low-temperature combustion chamber are provided inside a single fluidized-bed furnace through a partition wall. Has been devised. This further reduces the combustion chamber and gasification The ⁇ chamber, the char combustion chamber and the low temperature combustion chamber are provided adjacent to each other.
- This integrated gasifier was designed to overcome the problems of the two-column circulation system described above, and enables a large amount of fluid medium to circulate between the combustion chamber and the gasification chamber. Sensible heat alone can provide sufficient heat for gasification, and the principle of a power generation system using an improved fluidized bed furnace is to obtain as little generated gas as possible with a high calorific value. This is a technology that can be easily realized.
- the present invention has been made in view of the above circumstances, and has a special pressure balance control between a gasification chamber and a char combustion chamber, and mechanical handing of a fluid medium. It is an object of the present invention to provide a fuel gasification system capable of stably obtaining a product gas having excellent properties without requiring any means, and enabling highly efficient power recovery. It is another object of the present invention to provide an integrated gasifier that can produce high-efficiency power generation with little corrosion of steam superheaters (tubes) even when flammable waste containing chlorine is used as a fuel. I do.
- a fuel gasification system has a gasification chamber having an interface by flowing a high-temperature fluidized medium inside as shown in FIGS.
- a gas generated in the gasification chamber is used as fuel; and a gas generated in the gasification chamber is heated by heating the fluid in the chamber.
- a gasification chamber 1 and a char combustion chamber 2 are integrally formed; and a gasification chamber 1 and a char combustion chamber 2 are respectively provided.
- a first opening 25 communicating the gasification chamber 1 and the char combustion chamber 2 is provided below the first partition wall 15; It is configured to move the fluidized medium heated in the first combustion chamber 2 from the first combustion chamber 2 side to the gasification chamber 1 side through the opening 25 of the first:
- the gasification chamber and the char combustion chamber are integrally formed, it is easy to handle the fluid medium between the gasification chamber and the char combustion chamber: Since the gas and the combustion chamber are separated by a partition wall so that there is no gas flow above the interface, the gas generated in the gasification chamber and the combustion gas in the combustion chamber are mixed. Hardly happens.
- an energy recovery device that is a power recovery device such as a gas turbine, it is possible to recover power and energy by driving a fluid machine such as an air compressor or a generator. it can.
- the fluidized bed referred to in the fuel gasification system according to claim 1 is characterized in that the fluidized bed that is rich in the fluid medium that is vertically below, the fluidized medium that is vertically above the rich layer, and a large amount of gas Above the three fluidized beds consisting of a splash zone in which a fluid coexists, that is, above the splash zone, there is a free board portion mainly containing gas and containing almost no fluid medium.
- the interface according to the present invention may be considered as a force that refers to the splash zone having a certain thickness, or a virtual surface intermediate the upper surface and the lower surface (the upper surface of the dense layer) of the splash zone. It is preferable that gas is not circulated above the upper surface of the dense layer by a partition wall.
- the gasification chamber 1 and the char combustion chamber 2 are located at an interface between the respective fluidized beds.
- the upper part in the vertical direction is partitioned by the second partition wall 11 so that there is no gas flow; the lower part of the second partition wall 11 communicates the gasification chamber 1 and the char combustion chamber 2.
- a second opening 21 may be provided, and the fluid medium may be moved from the gasification chamber 1 side to the first combustion chamber 2 side through the second opening 21.
- the fluid medium moves from the gasification chamber 1 side to the char combustion chamber 2 side through the second opening 21, so that when the churning occurs in the gasification chamber 1, Moves to the first combustion chamber 2 together with the fluid medium, and the mass balance of the fluid medium between the gasification chamber 1 and the first combustion chamber 2 is maintained.
- a heat recovery chamber 3 integrated with the gasification chamber 1 and the char combustion chamber 2 is provided; the gasification chamber 1 and the heat recovery chamber 3 are separated from each other so that there is no direct gas flow, or they are separated from each other. In this case, heat recovery can be performed with little mixing of the gas generated in the gasification chamber and the combustion gas in the heat recovery chamber.
- the balance between the amount of char generated in the gasification chamber and the amount of char required for heating the fluidized medium in the char combustion chamber may be disrupted. It can be adjusted by adjusting the amount of heat recovered in the recovery room.
- the fuel gasification system after being used as fuel in the first energy recovery device 109 is used.
- Exhaust gas after energy recovery at 06 This exhaust gas still has considerable thermal energy, so the boiler 1 11 recovers its heat.
- the oxygen-free gas refers to a gas containing almost no oxygen, and a gas whose oxygen concentration does not at least reach a level at which the generated gas generated in the gasification chamber is substantially burned.
- the generated gas does not substantially burn and a generated gas having a high calorific value can be obtained.
- the fuel gasification system according to any one of claims 1 to And the first combustion chamber 2 are configured to be pressurized to a pressure higher than the atmospheric pressure; the second energy recovery device 1 driven by the combustion gas from the first combustion chamber 2 Equipped with a boiler 1 1 1 for introducing the gas used as fuel in the first energy recovery unit 109 and the combustion gas from the second energy recovery unit 141 You may do it.
- the combustion gas from the combustion chamber has pressure energy in addition to temperature energy, it has the same structure as the second energy recovery device, typically, the output turbine section of the gas turbine.
- Power recovery turbines can recover power from the combustion gases.
- the gas generated in the gasification chamber is led to the combustor 105 of the gas turbine without passing through the gas compressor attached to the gas turbine, and the gas burned there is output to the output turbine section 106 of the gas turbine.
- the gas compressor attached to the gas turbine can be eliminated.
- a gas compressor that generates pressure to compensate for the difference may be installed.
- a gasification system for fuel according to the invention according to claim 6 includes a gasification chamber having an interface by flowing a high-temperature fluidized medium inside as shown in FIGS. 1 and 11.
- Gasification chamber 1 which burns the gas generated by gasification in chamber 1 in the fluidized bed of the combustion chamber and heats the fluid medium and generates combustion gas; gasification chamber 1 A combustion chamber 53 for heating the combustion gas generated in the combustion chamber 2 by burning the gas generated in the combustion chamber 2; A gas recovery chamber 55 for recovering energy; the gasification chamber 1 and the combustion chamber 2 are integrally formed, and are configured to be pressurized to a pressure higher than the atmospheric pressure;
- the first chamber 15 and the first combustion chamber 2 are partitioned by a first partition wall 15 such that gas does not flow vertically above the interface between the respective fluidized beds; 5 is provided with a first opening 25 communicating the gasification chamber 1 and the char combustion chamber 2, and gasification is performed from the char combustion chamber 2 side through the first opening 25. It is configured to move the fluid medium heated in the chamber 1 to the chamber 1 side.
- the gasification chamber 1 and the char combustion chamber 2 are integrally formed, and are configured to be pressurized to a pressure higher than the atmospheric pressure.
- energy can be recovered from the combustion gas from the combustion chamber by an energy recovery device such as a power recovery turbine.
- the gasification chamber 1 and the char combustion chamber 2 are located at an interface between the respective fluidized beds.
- the upper part in the vertical direction is partitioned by the second partition wall 11 so that there is no gas flow; the lower part of the second partition wall 11 communicates the gasification chamber 1 and the char combustion chamber 2.
- a second opening 21 may be provided, and the fluid medium may be moved from the gasification chamber 1 side to the first combustion chamber 2 side through the second opening 21. .
- the gasification system for feedstock has a heat recovery chamber 3 integrated with the gasification chamber 1 and the char combustion chamber 2; there is no direct gas flow between the gasification chamber 1 and the heat recovery chamber 3.
- the fuel gasification system according to any one of claims 6 to 8, as described in claim 9. May be provided with a boiler 58 for introducing the gas after the energy has been recovered by the energy recovery device 55.In this case, after the energy is recovered by the energy recovery device 55, However, heat recovery can be achieved by a boiler from exhaust gas that still has thermal energy.
- FIG. 15 or FIG. Supplying gas to the existing boiler 13 1, the gasification of the fuel according to any one of claims 1 to 3, and 6 to 8;
- a fuel gasification system as described above is connected to the existing boiler so as to supply the combustion gas, so that, for example, many existing boilers using pulverized coal as a fuel are provided.
- boilers with low efficiency and high carbon dioxide emissions can be converted into a high-efficiency energy generation system, that is, redispersed.
- Fig. 1 is a configuration diagram showing the basic concept of the integrated gasification furnace of the present invention.
- Fig. 2 is a diagram showing a modification of Fig. 1 in the case where the furnace bottom is inclined and a partition wall is provided with a protrusion. It is.
- Figure 3 A and Figure 3 B is an explanatory view of a pressure control function of the integrated gasification furnace of the present invention c
- FIG. 4 is a structural diagram of an embodiment in which the integrated gasification furnace of the present invention is embodied by a cylindrical furnace.
- FIG. 6 is a diagram showing a modification of FIG.
- FIG. 7 is a horizontal sectional view of an embodiment in which the integrated gasification furnace of the present invention is embodied by a rectangular furnace.
- FIG. 8 shows a variation of FIG. 7:
- FIG. 9 is an explanatory diagram of an embodiment of the normal-pressure integrated gasifier of the present invention:
- FIG. 10 is an explanatory diagram of an embodiment of a combined cycle power generation system using the integrated gasifier of FIG. 9. It is.
- FIG. 11 is an explanatory diagram of an embodiment of a combined cycle power generation system using the integrated gasifier according to the present invention.
- FIG. 12 is a diagram showing a modified example of FIG.
- FIG. 13 is an explanatory diagram showing an example of a system for recovering power from generated gas from a normal-pressure integrated gasifier.
- Figure 14 shows power recovery from gas produced from a pressurized integrated gasifier C is an explanatory diagram showing an example of the system
- Figure 15 is an explanatory diagram showing an example of a system in which an existing boiler is combined with a system that recovers power from the gas generated from a normal-pressure integrated gasifier.
- Figure 16 is an explanatory diagram showing an example of a system that combines an existing boiler with a system that recovers power from gas produced from a pressurized integrated gasifier.
- FIG. 17 is an explanatory diagram of a conventional two-tower circulation type gasifier.
- FIG. 18 is an explanatory view of a conventional combined power generation system using a fluidized bed furnace.
- FIG. 1 schematically illustrates the basic configuration of the gasification furnace part of the present invention.
- the integrated gasifier 101 of the embodiment shown in FIG. 1 has three functions of pyrolysis, that is, gasification, char combustion, and heat recovery.
- the gasification chamber 1, the char combustion chamber 2, and the heat A recovery chamber 3 is provided, for example, housed in a furnace having a cylindrical or rectangular shape as a whole.
- the gasification chamber 1, the combustion chamber 2, and the heat recovery chamber 3 are divided by the partition walls 11, 12, 13, 14, 15 and 15, each of which is a dense layer containing a fluid medium at the bottom.
- a fluidized bed is formed: a fluidized bed in each chamber, namely a fluidized bed in a gasification chamber, a fluidized bed in a combustion chamber, a fluidized bed in a heat recovery chamber, and a fluidized bed in each chamber 1, 2, 3
- the diffuser includes, for example, a perforated plate laid on the bottom of the furnace, and the perforated plate is divided into a plurality of rooms by dividing the perforated plate in a width direction. In order to change the speed, the flow rate of the fluidizing gas blown out from each room of the diffuser through the perforated plate is changed.
- the flowing medium in each chamber also has a different flow state in each part of the chamber, and an internal swirling flow is formed.
- the size of the white arrow shown in the diffuser Indicates the flow velocity of the fluidized gas to be blown.c
- the thick arrow at the point indicated by 2 has a larger flow velocity than the thin arrow at the point indicated by 2a:
- a partition wall 1 1 separates the gasification chamber 1 from the char combustion chamber 2, and a partition wall 1 2 separates the char combustion chamber 2 and the heat recovery chamber 3. Is divided by a partition wall 13. That is, they are not configured as separate furnaces, but are configured integrally as one furnace.
- the partition wall 11 constitutes the second partition wall of the present invention.
- a partition wall 14 is provided for partitioning from the portion (the main portion of the combustion chamber). Further, the settling chamber combustion chamber 4 and the gasification chamber 1 are separated by a partition wall 15 as a first partition wall of the present invention.
- the fluidized bed contains a thick fluid medium (for example, sand) that is placed in a fluidized state by the fluidizing gas at the lower part in the vertical direction. It consists of a dense layer and a splash zone in which the fluid medium and a large amount of gas coexist in the vertical upper part of the dense layer, and the fluid medium is vigorously splashing. Above the fluidized bed, that is, above the splash zone, there is a freeboard section mainly containing gas and containing almost no fluid medium.
- the interface referred to in the present invention is the splash zone having a certain thickness.
- the force may also be regarded as a virtual surface between the upper surface and the lower surface of the splash zone (the upper surface of the dense layer).
- the phrase "partitioned by a partition wall so that there is no gas flow above the fluidized bed interface in the vertical direction" means that the gas flows above the upper surface of the dense layer further below the interface. It is preferred that there is no The partition wall 11 between the gasification chamber 1 and the char combustion chamber 2 almost completely partitions from the furnace ceiling 19 to the furnace bottom (perforated plate of the diffuser). There is no contact with the furnace bottom, and there is a second opening 21 near the furnace bottom. ⁇ However, the upper end of the opening 21 does not reach the upper part of either the fluidized bed interface of the gasification chamber or the fluidized bed interface of the combustion chamber.
- the upper end of the opening 21 should not extend above either the upper surface of the rich bed of the gasification chamber fluidized bed or the upper surface of the rich bed of the char-combustion chamber fluidized bed. I do. In other words, it is preferable that the opening 21 be configured so as to always dive into the dense layer. That is, the gasification chamber 1 and the char combustion chamber 2 communicate with each other at least in the freeboard part, more specifically, above the interface, and more preferably, above the upper surface of the dense layer. This means that there is no partition wall.
- the upper end of the partition wall 12 between the combustion chamber 2 and the heat recovery chamber 3 is located near the interface, that is, above the upper surface of the dense layer, but below the upper surface of the splash zone.
- the lower end of the partition wall 1 2 is close to the bottom of the furnace. Like the partition wall 1 1, the lower end does not contact the bottom of the furnace, and the opening 2 near the bottom of the furnace does not reach above the upper surface of the dense layer. There are two.
- the partition wall 13 between the gasification chamber 1 and the heat recovery chamber 3 is completely partitioned from the furnace bottom to the furnace ceiling.
- the upper end of the partition wall 1 4 is located near the fluidized bed interface, and the lower end is located at the bottom of the furnace. In contact.
- the relationship between the upper end of the partition wall 14 and the fluidized bed is the same as the relationship between the partition wall 12 and the fluidized bed: the sedimentation channel, the partition wall 15 that separates the combustion chamber 4 and the gasification chamber 1, and the partition wall 15 that is a partition It is similar to the wall 11 and almost completely partitions from the furnace ceiling to the furnace bottom.
- the lower end does not touch the furnace bottom, and there is a first opening 25 near the furnace bottom, the upper end of the opening is under Ri by the upper surface of the dense layer, namely: the first opening 2 5 relationship of the fluidized bed is similar to the second opening 2 1 and the relationship between the fluidized bed.
- Fuel such as coal and garbage introduced into the gasification chamber receives heat from the fluidized medium and is pyrolyzed and gasified. Typically, the fuel does not burn in the gasification chamber, but is so-called carbonized.
- the remaining dry distillation channel flows into the chamber 1 through the opening 21 below the partition wall 11 together with the fluid medium. In this way, the gas introduced from the gasification chamber 1 is burned in the gas combustion chamber 2 to heat the fluid medium.
- the fluid medium heated by the combustion heat of the chamber in the chamber 2 flows into the heat recovery chamber 3 beyond the upper end of the partition wall 12 and is disposed below the interface in the heat recovery chamber. After the heat is collected and cooled by the formed in-layer heat transfer tube 41, it flows into the first combustion chamber 2 again through the lower opening 22 of the second partition wall 12.
- the volatile components of the combustibles charged into the gasification chamber 1 are instantaneously gasified, and then the gasification of solid carbon (char) occurs relatively slowly. Therefore, the residence time of the fuel in the gasification chamber 1 (the time until the fuel charged in the gasification chamber 1 passes through the combustion chamber 2) determines the gasification rate (carbon conversion rate) of the fuel. It can be an important factor.
- the specific gravity of the channel is smaller than the specific gravity of the fluid medium.
- the flowing medium into the gasification chamber and the In the case of a furnace structure in which the flow of the fluid medium into the chamber is generated from the opening below the partition wall, the fluid medium mainly at the lower part of the bed is more likely to flow from the gasification chamber than the one at the upper part of the bed. It is easy to flow out into one combustion chamber, and conversely, it is difficult for the fuel to flow out of the gasification chamber into the combustion chamber. Therefore, the average residence time in the first gasification chamber can be maintained longer than that in the case where the gasification chamber is a completely mixed layer.
- the fluidized medium flowing into the gasification chamber from the sedimentation combustion chamber 4 is mainly mixed only in the lower part of the gasification chamber without being mixed widely in the bed in the gasification chamber.
- the fluidizing gas supplied from the hearth of the gasification chamber exchanges heat with the fluidizing medium. Heat is transferred from the fluidizing gas to the channel. It is possible to indirectly supply the heat used for the gasification of the chamber from the sensible heat of the fluidized medium: By controlling the temperature, it is possible to change the mixed state of the flowing medium and the char in the gasification chamber, thereby controlling the average residence time of the gas in the gasification chamber. Become.
- the height of the fluidized bed in the gasification chamber can be freely changed by controlling the pressure difference between the gasification chamber and the combustion chamber. It is also possible to control the residence time of the gasification chamber chamber by using.
- the heat recovery chamber 3 is not essential to the gasification system of the fuel of the present invention: that is, a gas-based chamber mainly composed of gaseous volatile components remaining in the gasification chamber 1. If the amount of the fuel and the amount of the fuel required to heat the fluid medium in the char combustion chamber 2 are almost equal, the heat recovery chamber 3 that takes heat from the fluid medium is unnecessary. Also, if the difference in the amount of For example, the gasification temperature in the gasification chamber 1 becomes higher, and the amount of co-gas generated in the gasification chamber 1 increases, so that the balance is maintained.
- the heat recovery chamber 3 when the heat recovery chamber 3 is provided as shown in Fig. 1, it is possible to handle a wide variety of fuels, from coal that generates a large amount of charcoal to municipal waste that generates almost no charcoal. In other words, regardless of the fuel, by adjusting the amount of heat recovery in the heat recovery chamber 3, the combustion temperature of the combustion chamber 2 is appropriately adjusted, and the temperature of the fluidized medium is maintained appropriately. Can be.
- the fluid medium heated in the first combustion chamber 2 passes over the upper end of the fourth partition wall 14 and flows into the sedimentation combustion chamber 4, and then the opening 25 below the lower partition wall 15 Flows into the gasification chamber 1.
- the flow state and movement of the flowing medium between the respective chambers will be described.
- the vicinity of the surface in contact with the partition wall 15 between the sedimentation chamber and the combustion chamber 4 is strong enough to maintain a fluidized state stronger than the fluidization of the sedimentation chamber.
- Fluidized area 1b As a whole, the superficial velocity of the fluidized gas should be changed depending on the location so that the mixed diffusion of the injected fuel and the fluidized medium is promoted.
- a weak fluidization zone 1a is provided in addition to the strong fluidization zone 1b to form a swirling flow.
- Gas combustion chamber 2 has a weak fluidization zone 2a at the center and a strong fluidization zone 2b at the periphery, and the fluidizing medium and the chamber form an internal swirling flow.
- the fluidization speed in the strong fluidization zone in the combustion chamber 2 is preferably 5 Umf or more, and the fluidization speed in the weak fluidization zone is preferably 5 Umf or less. Beyond this range, there is no particular hindrance if there is a clear relative difference. It is preferable to provide a strong fluidization zone 2b in the part in contact with the heat recovery chamber 3 in the char combustion chamber 2 and the sedimentation char combustion chamber 4. Also must If necessary, the furnace bottom should be provided with a gradient from the weak fluidization zone to the strong fluidization zone (Fig. 2).
- the fluidization state on the side of the combustion chamber near the partition wall 12 between the combustion chamber 2 and the heat recovery chamber 3 is relatively stronger than the fluidization state on the side of the heat recovery chamber 3.
- the fluidized medium flows into the heat recovery chamber 3 from the first combustion chamber 2 side over the upper end of the partition wall 12 near the fluidized bed interface, and the inflowed fluidized medium is heated.
- Due to the relatively weak fluidized state in the recovery chamber 3, that is, the high-density state it moves downward (toward the bottom of the furnace) and passes through the lower end (opening 22) of the partition wall 12 near the bottom of the furnace. Move from the recovery chamber 3 side to the char-chamber 2 side.
- the fluidized state of the main part of the combustion chamber 4 near the partition wall 14 between the main body of the first combustion chamber 2 and the settling chamber 4 is referred to as the fluidized state of the first combustion chamber 4 of the sedimentation chamber.
- the fluid medium flowing into the settling chamber 4 moves downward (toward the furnace bottom) due to the relatively weak fluidized state, ie, high density state, in the settling chamber 4, and the partition Through the lower end (opening 25) of the wall 15 near the bottom of the furnace, the sedimentation chamber moves from the combustion chamber 4 side to the gasification chamber 1 side.
- the fluidization state on the gasification chamber 1 side near the partition wall 15 between the gasification chamber 1 and the sedimentation combustion chamber 4 is relatively higher than the fluidization state on the sedimentation combustion chamber 4 side. It is kept in strong liquidity. This helps the fluid medium to move from the sedimentation chamber 1 to the gasification chamber 1 by the attraction.
- the fluidized state on the side of the combustion chamber 2 near the partition 1 near the partition wall 1 between the gasification chamber 1 and the combustion chamber 2 is relatively stronger than the fluidized state on the side of the gasification chamber 1
- the fluidized medium is thus maintained through the openings 21 below the fluidized bed interface of the partition 11, preferably below the top of the dense bed (submerged in the dense bed). It flows into the side of the combustion chamber 2.
- the movement of the fluid medium between the two chambers A and B is defined as follows: when the chambers A and B are partitioned by a partition X whose upper end is near the height of the interface, the partition X Comparing the fluidized state of the neighboring rooms A and B, for example, if the fluidized state of the room A is kept stronger than the fluidized state of the room B, the fluid medium will be at the upper end of the partition wall X.
- the upper end of the partition wall X which attempts to move the fluid medium over the upper end, is vertically higher than the lower end of the partition wall, which attempts to move the fluid medium under the lower end.
- the fluid medium can be divided into the partition wall X or the partition wall. c and may be moved in a predetermined direction with respect to Y, the flow of gas between the two chambers partitioned by the partition wall Y can and Nakusuko.
- the combustion chamber 2 and the heat recovery chamber 3 are separated by a partition wall 12 whose upper end is near the height of the interface and whose lower end is submerged in the dense layer.
- the fluidized state on the side of the combustion chamber 2 near the partition 12 is maintained more strongly than the fluidized state on the side of the heat recovery chamber 3 near the partition 12. Therefore, the flowing medium flows from the first combustion chamber 2 side to the heat recovery chamber 3 side over the upper end of the partition wall 12, and passes through the lower end of the partition wall 12 to the heat recovery chamber 3 side. Move to one combustion chamber 2 side.
- the lower end of the first combustion chamber 2 is separated from the first combustion chamber 2 by the first partition wall 15 which is immersed in the dense layer.
- the upper end is located on the side of the first combustion chamber of the partition wall 15.
- a sedimentation chamber 1 composed of a partition wall including a partition wall 14 near the height of the interface and a partition wall 15 is provided.
- the sedimentation chamber and combustion chamber 4 The fluid medium flowing into the chamber passes through the lower end of the partition wall 15 and moves from the sedimentation chamber 1 combustion chamber 4 to the gasification chamber 1 so as to maintain at least mass balance. At this time, if the fluidization state on the gasification chamber 1 side near the partition wall 15 is maintained more strongly than the fluidization state on the sedimentation chamber near the partition wall 15 and the combustion chamber 4 side, The action promotes the movement of the fluid medium.
- the gasification chamber 1 and the main chamber 2 are separated by a second partition wall 11 having a lower end buried in a dense layer.
- the flowing medium that has moved from the sedimentation chamber 1 to the gasification chamber 1 passes through the lower end of the partition wall 1 1 and moves to the chamber 2 so as to maintain the mass balance above. If the fluidization state on the side of the combustion chamber 2 near the wall 1 1 is maintained more strongly than the fluidization state on the side of the gasification chamber 1 near the partition wall 1, the mass balance should be maintained. Not only because of the strong fluidization state, the fluid medium is attracted and moved to the combustion chamber 2 side.
- the sedimentation of the fluidized medium is performed in the sedimentation chamber 1 which is a part of the combustion chamber 2, but a similar configuration is provided in a part of the gasification chamber 1.
- an opening 21 may be provided in the form of a so-called settling gasification chamber (not shown). That is, the fluidized state of the settling gasification chamber is made relatively weaker than that of the adjacent gasification chamber main body, and the flowing medium of the gasification chamber main body passes over the upper end of the partition wall to the settling gasification chamber. The flow medium that has flowed in and settled moves through the opening 21 to the combustion chamber.
- the sedimentation-chamber combustion chamber 4 may or may not be provided along with the sedimentation gasification chamber.
- the fluidized medium flows from the combustion chamber 2 to the gasification chamber 1 through the opening 25 and from the gasification chamber 1 to the gasification chamber 1 through the opening 21 as in the case of Fig. 1. Move to char combustion chamber 2.
- the entire heat recovery chamber 3 is evenly fluidized and is usually in contact with the heat recovery chamber at most.
- the fluidized state of the combustion chamber 2 is maintained to be weaker than the fluidized state of the combustion chamber 2. Therefore, the superficial velocity of the fluidizing gas in the heat recovery chamber 3 is controlled between 0 and 3 Umf, and the fluidized medium forms a settling fluidized bed while flowing slowly.
- 0 Umf is a state in which the fluidizing gas is stopped: With such a state, the heat recovery in the heat recovery chamber 3 can be minimized 3, that is, the heat recovery chamber 3
- the amount of heat recovered can be arbitrarily adjusted in the range from maximum to minimum.-
- fluidization is started and stopped uniformly or weakly throughout the chamber. It may be adjusted, but it is also possible to stop the fluidization of some areas and place the others in a fluidized state, or to adjust the strength of the fluidized state of some areas.
- relatively large non-combustible substances contained in the fuel are discharged from the non-combustible substance outlet 33 provided at the bottom of the gasification chamber 1.
- the bottom of the furnace in each chamber may be horizontal, but as shown in Fig. 2, the furnace bottom is inclined according to the flow of the fluid medium near the furnace bottom in order to prevent the accumulation of the flow of the fluid medium.
- the incombustible discharge may be provided not only at the bottom of the gasification chamber 1 but also at the bottom of the combustion chamber 2 or the heat recovery chamber 3.
- Shiino as a fluidizing gas in the gasification chamber 1 is only gas exiting the gasification chamber if so this 3 boosts the generated gas is to recycle used is purely generated from the fuel gas Thus, very high quality gas can be obtained. If this is not possible, include as much oxygen as possible It is better to use a gas that does not burn (oxygen free gas)
- oxygen or a gas containing oxygen for example, air is supplied in addition to oxygen-free gas as necessary, to produce gas. A portion may be burned.
- the fluidizing gas supplied to the combustion chamber 2 is a gas containing oxygen necessary for combustion in the combustion chamber, such as air, a mixed gas of oxygen and steam.
- air, steam, combustion exhaust gas and the like are used as the fluidizing gas supplied to the heat recovery chamber 3.
- the portion above the upper surfaces of the fluidized beds of gasification chamber 1 and char combustion chamber 2 (the upper surface of the splash zone), that is, the freeboard portion, is completely separated by a partition wall. Furthermore, since the upper part of the dense bed of the fluidized bed, that is, the splash zone and the free board part are completely separated by partition walls, they are shown in Figs. 3A and 3B.
- the turbulence can be absorbed by only slightly changing the layer height difference: the gasification chamber 1 and the combustion chamber 2 are separated by the partition wall 15 so that the pressure of each chamber can be reduced. Even if Pl and P2 fluctuate, this pressure difference can be absorbed by the layer height difference, and can be absorbed until either layer falls to the upper end of the opening 25.
- the upper limit of the pressure difference (PI-P2 or P2-P1) between the free space of the combustion chamber 2 and that of the gasification chamber 1 that can be absorbed by the bed height difference is determined by the partition wall 15 that separates each other. It is approximately equal to the head difference between the head of the fluidized bed of the gasification chamber and the head of the fluidized bed of the combustion chamber from the upper end of the lower opening 25.
- the integrated gasifier 101 In the integrated gasifier 101 according to the above-described embodiment, three gasification chambers, a combustion chamber, and a heat recovery chamber are provided inside each fluidized bed furnace through a partition wall. , And a char combustion chamber and gasification chamber, and a char combustion chamber and mature recovery The 2 ⁇ chambers are provided adjacent to each other. Unlike the two-tower circulation type furnace, the integrated gasifier 101 enables a large amount of fluid medium to circulate between the combustion chamber and the gasification chamber. Can supply a sufficient amount of heat for gasification, and can most easily realize the principle of a power generation system using an improved pressurized fluidized bed furnace, ⁇ to obtain as little generated gas with high calorific value as possible '' .
- the pressure balance between the gasification chamber and the combustion chamber is well controlled, and the combustion gas and the combustion gas are well controlled.
- the generated gas does not mix and does not degrade the properties of the generated gas.
- the fluidized medium as the heat medium and the charcoal flow from the gasification chamber 1 side to the charcoal combustion chamber 2 side. Since the same amount of fluid medium is configured to return to the gasification chamber 1 from the first combustion chamber 2 side, the mass is naturally balanced and the fluid medium is transferred to the first combustion chamber. There is no need to transport mechanically using a conveyor or the like to return the gas from the second side to the gasification chamber 1, and there are no problems such as difficulty in handling high-temperature particles and large sensible heat loss.
- three functions of pyrolysis and gasification of fuel, char combustion, and in-bed heat recovery are provided in one fluidized bed furnace.
- the gasification chamber and the heat recovery chamber are separated.
- the wall completely separates from the furnace bottom to the ceiling, or is placed so that they do not touch each other, and the gasification chamber and char combustion chamber are completely partitioned above the fluidized bed interface.
- the fluid medium is moved from the first combustion chamber side to the gasification chamber side through an opening provided near the furnace bottom of the partition wall. Further, it is configured to move the fluid medium containing the char from the gasification chamber to the char combustion chamber.
- the gasification chamber and the char combustion chamber are completely separated by a partition wall above the interface of the fluidized bed, so that even if the gas pressure in each chamber fluctuates, the pressure balance is maintained. Does not cause the problem that the combustion gas and the produced gas are mixed. Therefore, no special pressure balance control is required between the gasification chamber and the combustion chamber. And, by maintaining the strength of the fluidized state on the gasification chamber side near the partition wall and the fluidized state on the side of the combustion chamber in a predetermined state, through the opening provided in the vicinity of the furnace bottom of the partition wall, A large amount of fluid medium can be stably moved from the combustion chamber side to the gasification chamber side. For this reason, there is no need for a mechanical hot particle handling means for moving the fluidized medium from the combustion chamber side to the gasification chamber side.
- the weakly fluidized area provided at a location adjacent to the gasification chamber in the above-mentioned combustion chamber is a settling chamber, and the partition wall extends from the furnace bottom to near the fluidized bed interface.
- the chamber may be divided into other chambers for combustion, and the strong combustion zone and the weak fluidization zone may be respectively provided in the above-described combustion chamber, sedimentation chamber, and gasification chamber.
- the heat recovery chamber is connected to the strong fluidization zone of the char combustion chamber.
- the heat recovery chamber and the char combustion chamber are provided with an opening near the furnace bottom, and are partitioned by a partition wall whose upper end reaches the vicinity of the fluidized bed interface, and the char combustion near the partition wall.
- the fluidized state on the chamber side is made relatively stronger than the fluidized state on the heat recovery
- the heat recovery chamber may be disposed so as to be in contact with the strong fluidization region of the sedimentation chamber, and the heat recovery chamber and the sedimentation chamber have an opening near the furnace bottom, And the upper end thereof is partitioned by a partition wall reaching the vicinity of the fluidized bed interface, and the fluidized state of the sedimentation chamber near the partition wall and the combustion chamber side is made relatively stronger than the fluidized state of the heat recovery chamber side. It is also possible to generate a circulating force.
- An oxygen-free gas is used as the fluidizing gas in the gasification chamber, but a gas containing no oxygen such as water vapor may be used as the so-called oxygen-free gas. ,.
- each of the gasification chamber, the char combustion chamber, and the heat recovery chamber may be inclined along the streamline of the fluidized medium near the furnace bottom.
- FIG. 4 shows an embodiment in which the present invention is applied to a cylindrical furnace having a central axis in the vertical direction.
- the inside of the furnace of the cylindrical integrated gasifier 10 has a cylindrical partition concentric with the outer wall.
- a wall 10 a is provided, and the inner side of the partition wall 10 a forms a char combustion chamber 2.
- the settling channel combustion chamber 4, gasification chamber 1, and heat recovery chamber 3 are fan-shaped in the annular part surrounding the combustion chamber outside the partition wall 10a (formed by two large and small concentric circles). It is arranged in a shape obtained by cutting out an annular area to be cut by two radii, so to speak, in the shape of a paper part of a fan.
- the good urchin cylindrical, integrated gas shown in FIG. 1 1 described later Like a gasification furnace, it is easy to store the furnace in a pressure vessel.
- the basic structure of the integrated gasifier 10 is the same as that shown in Fig. 1 except that it is pressurized and is placed in a pressure vessel 50. It is the same as in the furnace 101.
- FIG. 5 is a horizontal sectional view of the fluidized bed portion of the embodiment shown in FIG.
- a central combustion chamber 2 is provided in the center, a gasification chamber 1 is provided in the peripheral area, and a heat recovery chamber 3 is provided on the opposite side.
- a fan-shaped sedimentation combustion chamber 4 is provided between the gasification chamber 1 and the heat recovery chamber 3.
- a diffuser installed at the furnace bottom of the fan - shaped gasification chamber 1 is also divided into multiple parts, and the two ends of the fan - shaped gasification chamber 1 b
- a weak fluidized zone 1a with a relatively low superficial velocity is provided, and the internal swirling flow in which the fluid medium in the gasification chamber also blows up in the strong fluidized zone and sinks in the weak fluidized zone. Is formed. Due to this swirling flow, the fuel F introduced into the gasification chamber is widely diffused throughout the gasification chamber 1, and the gasification chamber can be used effectively.
- the partition wall 11 of the gasification chamber 1 and the char combustion chamber 2 has an opening 21 near the furnace bottom. Except for the opening 21, it is completely partitioned over the ceiling.
- the fuel F that has been pyrolyzed and gasified in the gasification chamber 1 flows out to the combustion chamber 2 through the opening.
- the opening 21 may be provided over the entire surface of the gasification chamber 1, or may be provided only in the weakly fluidized region.
- black arrows indicate the flow path of the flowing medium due to the sedimentation flow through the opening at the bottom of the furnace, and gray arrows indicate the movement of the flowing medium due to the upward flow over the upper end of the partition wall. Show route 3
- the operating temperature of gasification chamber 1 can be adjusted to the optimum temperature by fuel.
- Fuels such as coal, which have a relatively low gasification rate and generate a lot of char In this case, a high gasification rate can be obtained by maintaining the temperature of the gasification chamber at 800 to 900 ° C. Also, good urchin of To ⁇ garbage, the one maintains quality almost by connexion desalting effect on keeping the bed temperature to 350 to 450 e C
- suppressing the rate of release of volatiles Stable operation can be performed:
- the diffuser installed at the bottom of the combustion chamber 2 is divided into a central part and a peripheral part. The part is diffused so that it becomes the strong fluidization area 2b.
- the strong fluidized zone 2b forms an upward fluidized bed in which the fluid medium blows up
- the weak fluidized zone 2a forms a settling fluidized bed in which the fluidized media descends, forming an internal swirling flow as a whole. I have.
- the char combustion chamber 2 In order to complete the char combustion and facilitate the supply of sensible heat to the gasification chamber 1, the char combustion chamber 2 should be kept as high as possible, and the bed temperature should be maintained around 900C. Desirable. In general, in the case of fluidized-bed combustion in which an exothermic reaction occurs inside, the risk of agglomeration increases when operating around 900 C. However, in the case of the above embodiment, heat diffusion and Char diffusion is promoted, and stable char combustion without agglomeration becomes possible.
- agglomeration refers to a mass of ash in a fluid medium or fuel that has melted and solidified.
- the sedimentation-chamber combustion chamber 4 be in a weakly fluidized state as a whole in order to form a sedimentation fluidized bed.
- heat is diffused inside the sedimentation-chamber combustion chamber 4.
- a weak fluidizing zone 4a and a strong fluidizing zone 4b may be provided to promote the internal swirling flow so that the side in contact with the gasification chamber becomes a settling fluidized bed.
- the lower end of the partition wall 16 between the sedimentation-chamber combustion chamber and the heat recovery chamber is in contact with the furnace bottom as shown in FIG. 4, and the upper end is much longer than the interface of the fluidized bed. It is located at a high position, To prevent the flow of the flowing medium.
- the upper end of the wall 16 may be close to the fluidized bed interface, and an opening may be provided near the furnace bottom to cause circulation of the fluidized medium between the settling chamber combustion chamber 4 and the heat recovery chamber 3.
- the air diffuser at the hearth of the heat recovery chamber 3 is divided, and the heat recovery chamber 3 is partitioned by the partition wall 16a, one of which is char-combustion.
- the temperature of the chamber and the temperature of the gasification chamber can be controlled independently.
- the air diffuser at the hearth of the sedimentation-chamber combustion chamber 4 should also be divided so that the part in contact with the heat recovery chamber forms the strong fluidization zone 4b.
- the heat recovery chamber 3 is provided with radial heat transfer tubes 4 1, and the fluid medium flowing from the combustion chamber 2 across the partition wall 12 is cooled there, and the lower part of the partition wall 1 2 Returning to the first combustion chamber 2 from the opening 22 of the tube, the resistance of the flowing medium flowing through the group of tubes in the layer is lower in the layer than in the layer because the pitch of the layer in the layer increases toward the periphery. Small: As a result, the fluid medium flowing from the first combustion chamber 2 is evenly dispersed in the surrounding area, and the entire volume of the heat recovery chamber 3 can be used effectively, resulting in a compact structure as a whole. .
- FIG. 7 shows an embodiment of a rectangular furnace according to the present invention.
- the outer wall of the gasifier does not need to have a pressure-resistant structure.
- Rectangular furnace is also suitable from the manufacturing point of view.
- the heat recovery chamber 3 is used for the combustion chamber and the sedimentation chamber, as in the case of the cylindrical furnace described above. It is preferable that the temperature of the fluidized medium supplied to the gasification chamber 1 can be controlled independently of the temperature of the combustion chamber 2 by the partitions 13 and 16 for the combustion chamber.
- the fluid medium in the portion where the weak flow mobilization zone of the chamber 1 and the heat recovery chamber 3 are in contact is both in a weak fluidized state.
- the clear moving direction is not determined and may not function effectively as a heat carrier.
- the portion may be opened to the outside of the furnace and used effectively, for example, by providing a supply port for a recycling channel.
- FIG. 9 shows an embodiment in which the present invention is applied to an ordinary pressure fluidized bed furnace.
- the fuel contains chlorine, as described above, almost all of the chlorine-containing heat transfer tubes 41 arranged in the heat recovery chamber 3 and the heat transfer tubes 42 of the charge combustion chamber freeboard portion are chlorine. Because it does not come into contact with steam, the steam temperature can be raised to not less than 350 e C, which is the maximum steam temperature of conventional refuse incinerators, and to 500 or more. Also, where the combustion gas blows from the char combustion chamber 2 to the gasification chamber 1 side, the residual oxygen in the combustion gas reacts with the combustible gas and becomes high temperature, which promotes char combustion and limestone decarboxylation.
- FIG. 10 is a process flow in the case of melting ash using gas generated from the integrated gasification furnace of the present invention.
- a gasification chamber 1 a char combustion chamber 2, a heat recovery chamber 3, a sedimentation char-combustion chamber 4, etc. are provided in a furnace body 10 at normal pressure, and a large amount of fluid medium is used for each of these. Stable operation is enabled by circulating the chamber as in the above-described embodiments.
- a part of the pyrolysis gas in the gasification chamber 1 is introduced into the high-temperature melting furnace 54 and used for the ash melting heat treatment.
- the remaining pyrolysis gas, together with the char combustion gas removes heat from the exhaust heat boiler, removes the dust with a bag filter, and exhausts it.
- FIG. 11 shows an embodiment in which the integrated gasifier of the present invention is used in a combined cycle power generation system.
- the integrated gasifier 10 of the present invention is disposed in a pressure vessel 50 and is operated under pressure.
- the outer wall of the gasifier 10 may have an integral structure that also serves as a pressure vessel.
- Part of the combustible gas generated in the gasification chamber 1 is supplied to a high-temperature melting furnace 54 at normal pressure, and is used as heat for melting ash.
- the remaining combustible gas is removed by the high-temperature dust collector 51 together with the char-combustion gas, and then guided to the topping compass 53 as the auxiliary combustion chamber of the present invention, and used as the energy recovery device of the present invention.
- a high-temperature gas to be supplied to the gas turbine section 55 is generated.
- Antofagasta - bin unit 5 5 has the same apparatus and the power turbine section of the conventional gas turbine, it is also called a power recovery turbine c
- a heat transfer tube 42 may be installed at the top of the combustion chamber 2 if necessary: Even if the fuel contains chlorine, the chlorine is generated on the side of the product gas generated in the gasification chamber 1. Since it is almost contained, the combustion gas in this embodiment hardly contains chlorine. Therefore, the heat transfer tube 4 2 is Thus, it can be used for steam heating of 500 ° C. or more. Since the in-layer heat transfer tubes 41 arranged in the heat recovery chamber 3 are not more corrosive than the heat transfer tubes 42, they can be used as steam superheaters at higher temperatures than the heat transfer tubes 42. it can.
- coal is first gasified by a pressurized gasifier, and the unburned carbon (so-called char) is burned in a pressurized char combustion chamber 2.
- the combustion gas from the combustion chamber 2 and the gas from the gasification chamber 1 are cleaned by high-temperature dust collectors 51 and 52, respectively, and then mixed and burned by a topping compass 53.
- High temperature dust collectors 51 and 52 include ceramic filters, metal filters using heat-resistant alloys, and cyclone separators. Is used.
- the temperature of the gas flowing into the gas turbine unit 55 can be raised to the maximum allowable temperature determined on the gas turbine side.
- the biggest thing is cleaning of the generated gas.
- the cleaning is, for example, desulfurization.
- Desulfurization is necessary, for example, to protect turbine blades in gas turbine sections.
- a generated gas cooler is provided in the gas path between the gasification chamber 1 and the high-temperature dust collector 52 to cool the gas to, for example, about 450 ° C.
- desulfurization apparatus is al: It is still 3 is performed in order to protect the blades of the gas turbine, the gas path from Chiya one combustion chamber gas cooler and the desulfurizer is usually not necessary . Because the limestone is charged into the furnace and the limestone circulates with the flowing medium, the sulfur-combustion chamber 2 is also in an oxidizing atmosphere with oxygen, so the sulfur content is C a
- the combustion gas from the combustion chamber 2 is collected and dedusted by a high-temperature dust collector 51 such as a ceramic filter, and then guided to the turbine section 55 to generate power. Collected. At this time, the combustion gas may be led directly to the turbine section 55, but the efficiency of power recovery is not necessarily high because the temperature of the combustion gas is not so high.
- the combustion gas is led to a topping compass 53.
- the generated gas (combustible gas) led out of the gasification chamber 1 is collected by a dust collector 52 such as a ceramic filter, After the dust is removed, it is guided to the topping compass 53 and burned here.
- the combustion gas from the above-mentioned combustion chamber is auxiliary combustion.
- the combustion gas from the chamber (and the combustion gas of the generated gas used for auxiliary combustion) is a high-temperature gas of about 1200 : C (1300 C is also possible depending on the heat-resistant temperature of the outlet bin).
- This high-temperature gas is supplied to an output turbine section (power recovery unit) 55.
- the combination of the combustion chamber 2 and the topping compasser 53 is usually used. Of gas turbines.
- the generator 57 is connected to the rotating shaft of the output turbine unit via a reduction gear or directly connected to the generator 57 to generate electric power.
- the output turbine unit 55 A compressor (typically an axial air compressor) 56 is directly connected to the rotating shaft to generate compressed air.
- This compressed air is mainly used as the combustion air in the first combustion chamber 2.
- C is supplied to the first combustion chamber 2 and a part thereof is supplied to the topping pasta 53.
- the product gas can usually be burned with oxygen remaining in the exhaust gas from the first combustion chamber 2.
- the inside of the pressure vessel 50 is pressurized to about 5 to 10 kg Z cm 2 .
- the inside of the pressure vessel 50 may be pressurized to, for example, about 30 kg Z cm 2 in accordance with the specifications of the output turbine section 55.
- the output gas turbine section 55 has a premixing chamber for mixing the combustion gas from the combustion chamber 2 and the gas generated from the gasification chamber 1 once. Even though the topping compass 53 is necessary, if only the generated gas from the gasification chamber 1 is introduced into the output gas turbine section 55, the gas shown in Fig. 14 described later will be used. The generated gas may be directly introduced into the combustor 105 attached to the turbine 109. Gas generated from gasification chamber 1 If only the gas is introduced, the gas turbine 55 can be operated using high calorific gas as fuel.
- the exhaust gas discharged from the output turbine section 55 is led to a waste heat boiler 58 through a path 125, and then passed through an exhaust gas path 128 to a desulfurization and denitration device (not shown). Via the chimney (not shown )
- the waste heat boiler 58 recovers the heat of the exhaust gas to generate steam.
- This steam passes through a steam pipe 127 and is supplied to a steam turbine 112, and drives a generator 113 connected directly to a rotating shaft of the steam turbine 112 via a reduction gear or directly.
- the temperature of the high-temperature melting furnace can be raised to a temperature sufficient for melting without making the high-temperature melting furnace completely burnt. It is effective to place a high-temperature gasifier 60 in place of to generate gas.
- a high-temperature gasifier both gas and slag flow down, the slag is superheated by the heat of the gas, and the gas is once immersed in water and quenched while preventing flow failure due to slag cooling.
- Gasifiers are preferred. This is because the product gas obtained in this way contains almost no chlorine and can be used not only as a chemical raw material but also as a gas turbine fuel.
- Fig. 11 in the embodiment of Fig.
- the output gas turbine unit 55 is connected to the topping compasser 53, and the air compressor 56 and the waste heat boiler are further connected. 5 8 are installed. Furthermore, as in the case of Fig. 11, the steam turbine 1 1 2 The power is recovered by the power generator 1 and 3.
- a normal-pressure integrated gasifier (normal-pressure ICFG) of the present invention is provided with a power recovery device.
- This is a so-called ICFG combined power generation system.
- the generated gas path 122 that leads the generated gas
- the generated gas cooler 102 arranged along the path 121
- the collectors 103 are arranged in this order.
- a conduit 122 is connected to a lower portion of the char collector 103 to return collected char to the char combustion chamber 2.
- Also connected to the channel collector 103 is a conduit 123 for leading the generated gas separated and cleaned to the combustion chamber 105 of the gas turbine-in the middle of the conduit 123.
- a generated gas compressor 104 is provided.
- the compressor 104 is for increasing the pressure of the gas generated from the gasification furnace to a pressure required by the output turbine unit 106 at normal pressure, which is almost atmospheric pressure.
- the compressor 104 may be a reciprocating compressor or a centrifugal compressor depending on the gas flow rate and the discharge pressure. Since the gas to be compressed is generated gas generated in the gasification chamber, that is, a relatively small amount of fuel having a high calorific value, the power of the compressor 104 is not unnecessarily increased.
- the gas turbine 109 as the first energy recovery device is independent of the combustion gas from the combustion chamber 2.
- the heat generated in the gasification chamber 1 is high. Only generated gas is used as fuel. That is, without being mixed with the combustion gas from the combustion chamber 2 and without being used to heat the combustion gas, the first energy as fuel is independent of the combustion gas. It is led to the recovery device and used.
- An air compressor 107 is directly connected to the rotating shaft of the output turbine unit 106.
- the air supplied by the air compressor 107 and the product gas compressed by the compressor 104 burn in the combustor 105, resulting in a high temperature of about 1200 ° C.
- Combustion gas is supplied to the output gas turbine unit 106 to generate power:
- the rotating shaft of the output catalyst unit 106 rotates the generator 108 directly or via a reduction gear.
- the shafts are connected so that power can be recovered in the form of electric power.
- Combustion gas (exhaust gas) from the power turbine section 106 is discharged through a path 125.
- the combustion gas (exhaust gas) from the first combustion chamber 2 and the heat recovery chamber 3 has sensible heat to recover heat, but does not include the calorific value as fuel and has power to recover pressure. Not.
- This gas is exhausted through channel 124.
- the route 124 and the route 125 join together to form the route 126, which is led to the waste heat boiler 111.
- steam is generated by heat from the exhaust gas.
- the steam is led to the steam turbine 1 12 through the steam pipe 1 2 7:
- the rotating shaft of the steam turbine 1 12 is connected via a reduction gear or directly.
- the rotating shafts of the generator 113 are connected to each other, and power is recovered in the form of electric power.
- the heat recovered by the waste heat boiler 1 1 1 1, and the cooled combustion gas (exhaust gas) passes through the route 1 28, and if necessary, one or more of desulfurization equipment, denitration equipment, and dust removal equipment. After being cleaned via this device, it is released from the chimney 1 15.
- the integrated gasifier 10 or 101 is not limited to the newly installed exhaust gas (waste heat) boiler 11 1, but the existing boiler 13. It may be connected to 1.
- the difference between the amount of fuel required by the existing boiler and the product gas and combustion gas supplied by the integrated gasifier 101 is determined by, for example, using separate fuel such as pulverized coal, Through 2 It may be supplemented by supplying.
- a device that efficiently recovers power from the generated gas and recovers the energy remaining in the exhaust gas without increasing the cost.
- an existing boiler that emits a large amount of CO 2 gas relative to the generated energy such as electric power can be converted to a highly efficient system. That is, reparing.
- the output turbine unit 106 of the gas turbine was used as the power recovery device as the energy recovery device.
- a diesel engine may be used depending on the amount of generated gas as fuel.
- FIG. 14 one embodiment in which a power recovery device is provided in the pressurized integrated gasifier of the present invention will be described.
- the integrated gasifier 10 is placed in a pressure vessel 50 and the pressurized gas is pressurized to a pressure higher than the atmospheric pressure, as compared to the normal pressure type operated at almost atmospheric pressure in Fig. 13. Driven by This is the same as described in FIG. Since the gasification chamber 1 is under pressure.
- the gas compressor 104 is not required. Therefore, the gas compressor 104 is not provided in the path 123.
- the combustion gas from the chamber 1 has a pressure higher than the atmospheric pressure, the combustion gas is led to a dust collector 110 such as a ceramic filter through a path 124 to be cleaned. After that, it is supplied to a PARICANO TURBLY turbine 141 as a second energy recovery device.
- Power recovery unit The structure of the bottle 141 is the same as that of the normal gas bottle.
- An air compressor (typically an axial compressor) 142 is usually directly connected to the rotary shaft of the par- ley-covery turbine 141, and the compressed air generated by the compressor 144 is It is used as flowing air in the furnace of the combustion chamber 2 and the heat recovery chamber 3.
- a generator 144 is connected to the rotating shaft of the power recovery turbine 141 via a speed reducer or directly, and generates electric energy.
- the waste heat boiler 111 in FIG. 14 may be a boiler that uses the existing pulverized coal as fuel. This is similar to the relationship of the embodiment of FIG. 15 to the embodiment of FIG.
- the fuel in the gasification chamber, the fuel is gasified in the fluidized bed formed by the high-temperature fluidized medium flowing from the char combustion chamber.
- Most of the gas is pure gas generated from fuel or a mixture of gas generated from fuel and fluidized gas required for fluidization of the gasification chamber.
- This invention is useful for the system which gasifies and burns fuel, such as coal and municipal solid waste, and collects the energy.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
- Gasification And Melting Of Waste (AREA)
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
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CA002314986A CA2314986C (en) | 1997-12-18 | 1998-12-18 | Fuel gasification system |
EP98961414A EP1043385A4 (en) | 1997-12-18 | 1998-12-18 | BRENSTOFFVERGASUNGSSYSTEM |
US09/581,593 US6949224B1 (en) | 1997-12-18 | 1998-12-18 | Fuel gasification system |
AU16839/99A AU734203B2 (en) | 1997-12-18 | 1998-12-18 | Fuel gasification system |
KR1020007006614A KR100595042B1 (ko) | 1997-12-18 | 1998-12-18 | 연료의 가스화시스템 |
JP2000539108A JP4243919B2 (ja) | 1997-12-18 | 1998-12-18 | 燃料のガス化システム |
BRPI9815349-8A BR9815349B1 (pt) | 1997-12-18 | 1998-12-18 | sistema de gaseificaÇço de combustÍvel. |
HK01105874A HK1035203A1 (en) | 1997-12-18 | 2001-08-21 | Fuel gasification system |
US11/073,688 US7390337B2 (en) | 1997-12-18 | 2005-03-08 | Fuel gasification system |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP36461697A JPH11181450A (ja) | 1997-12-18 | 1997-12-18 | 統合型ガス化炉 |
JP9/364616 | 1997-12-18 | ||
JP10/247837 | 1998-08-18 | ||
JP24783798 | 1998-08-18 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/073,688 Division US7390337B2 (en) | 1997-12-18 | 2005-03-08 | Fuel gasification system |
Publications (1)
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WO1999031202A1 true WO1999031202A1 (en) | 1999-06-24 |
Family
ID=26538450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP1998/005740 WO1999031202A1 (en) | 1997-12-18 | 1998-12-18 | Fuel gasifying system |
Country Status (12)
Country | Link |
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US (3) | US6949224B1 (ja) |
EP (1) | EP1043385A4 (ja) |
JP (1) | JP4243919B2 (ja) |
KR (2) | KR100643253B1 (ja) |
CN (2) | CN1129662C (ja) |
AU (1) | AU734203B2 (ja) |
BR (1) | BR9815349B1 (ja) |
CA (1) | CA2314986C (ja) |
HK (1) | HK1035203A1 (ja) |
ID (1) | ID26163A (ja) |
RU (1) | RU2220187C2 (ja) |
WO (1) | WO1999031202A1 (ja) |
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- 1998-12-18 CA CA002314986A patent/CA2314986C/en not_active Expired - Fee Related
- 1998-12-18 CN CN98813559A patent/CN1129662C/zh not_active Expired - Lifetime
- 1998-12-18 BR BRPI9815349-8A patent/BR9815349B1/pt not_active IP Right Cessation
- 1998-12-18 WO PCT/JP1998/005740 patent/WO1999031202A1/ja active IP Right Grant
- 1998-12-18 CN CNB2003101013532A patent/CN1271176C/zh not_active Expired - Lifetime
- 1998-12-18 KR KR1020057023060A patent/KR100643253B1/ko not_active IP Right Cessation
- 1998-12-18 JP JP2000539108A patent/JP4243919B2/ja not_active Expired - Lifetime
- 1998-12-18 AU AU16839/99A patent/AU734203B2/en not_active Ceased
- 1998-12-18 KR KR1020007006614A patent/KR100595042B1/ko not_active IP Right Cessation
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Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2004016716A1 (ja) * | 2002-08-15 | 2004-02-26 | Ebara Corporation | ガス化炉 |
WO2005033250A2 (en) * | 2003-10-02 | 2005-04-14 | Ebara Corporation | Gasification method and apparatus |
WO2005033250A3 (en) * | 2003-10-02 | 2005-07-14 | Ebara Corp | Gasification method and apparatus |
JP2007507555A (ja) * | 2003-10-02 | 2007-03-29 | 株式会社荏原製作所 | ガス化方法及び装置 |
WO2013136868A1 (ja) * | 2012-03-13 | 2013-09-19 | 株式会社Ihi | 循環式ガス化炉 |
JP2013189510A (ja) * | 2012-03-13 | 2013-09-26 | Ihi Corp | 循環式ガス化炉 |
AU2013233638B2 (en) * | 2012-03-13 | 2015-11-05 | Ihi Corporation | Circulation type gasification furnace |
US9399738B2 (en) | 2012-03-13 | 2016-07-26 | Ihi Corporation | Circulation type gasification furnace |
CN103727528A (zh) * | 2014-01-10 | 2014-04-16 | 哈尔滨工业大学 | 串联复合的煤气化与燃烧流化床-煤粉炉 |
CN117143634A (zh) * | 2023-11-01 | 2023-12-01 | 浙江润昇新能源有限公司 | 一种轻质物料气化处理设备及控制方法 |
CN117143634B (zh) * | 2023-11-01 | 2024-01-26 | 浙江润昇新能源有限公司 | 一种轻质物料气化处理设备及控制方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1043385A4 (en) | 2008-08-06 |
JP4243919B2 (ja) | 2009-03-25 |
AU734203B2 (en) | 2001-06-07 |
CA2314986A1 (en) | 1999-06-24 |
CN1271176C (zh) | 2006-08-23 |
CN1284986A (zh) | 2001-02-21 |
BR9815349A (pt) | 2004-02-25 |
EP1043385A1 (en) | 2000-10-11 |
US6949224B1 (en) | 2005-09-27 |
KR20010033218A (ko) | 2001-04-25 |
US7390337B2 (en) | 2008-06-24 |
US20050144844A1 (en) | 2005-07-07 |
BR9815349B1 (pt) | 2010-02-09 |
KR100595042B1 (ko) | 2006-07-03 |
CN1515654A (zh) | 2004-07-28 |
ID26163A (id) | 2000-11-30 |
CN1129662C (zh) | 2003-12-03 |
KR100643253B1 (ko) | 2006-11-13 |
RU2220187C2 (ru) | 2003-12-27 |
US7618469B2 (en) | 2009-11-17 |
AU1683999A (en) | 1999-07-05 |
US20080263952A1 (en) | 2008-10-30 |
KR20050117592A (ko) | 2005-12-14 |
CA2314986C (en) | 2008-03-25 |
HK1035203A1 (en) | 2001-11-16 |
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