Classifications

• • 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
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
• • 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
  • C10J3/02—Fixed-bed gasification of lump fuel
  • C10J3/20—Apparatus; Plants
• • 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
• • 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
  • C10J3/72—Other features
  • C10J3/86—Other features combined with waste-heat boilers
• • 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
  • C10J2300/093—Coal
• • 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
  • C10J2300/0953—Gasifying agents
  • C10J2300/0959—Oxygen
• • 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
  • C10J2300/0953—Gasifying agents
  • C10J2300/0973—Water
  • C10J2300/0976—Water as steam
• • 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
  • C10J2300/1656—Conversion of synthesis gas to chemicals
  • C10J2300/1662—Conversion of synthesis gas to chemicals to methane
• • 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
  • C10J2300/1807—Recycle loops, e.g. gas, solids, heating medium, water
  • C10J2300/1823—Recycle loops, e.g. gas, solids, heating medium, water for synthesis gas
• • 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
  • C10J2300/1884—Heat exchange between at least two process streams with one stream being synthesis gas
• • 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

Definitions

• the present invention relates to a plant for the production of methane with the features mentioned in the preamble of claim 1.
• Multi-stage coal gasification processes are known, e.g. B. from LJ Anastasia, WG Blair: “Clean Fuels from Coal", Symposium II Paper, IGT Chicago 1975, pp. 1 7 1 - 193 (so-called Hygas process) and from RF Detman: "Status of OCR / AGA coal gasification - programs "in Gas Cake International 23 (1974) pp. 301-303 (so-called Bigas method).
• the coal is gasified by hydrogenation in a first stage, the heat released by the exothermic process of methanation being used and the hydrogen required for this being generated in a second stage by steam gasification; an endothermic process that is kept going by the combustion of part of the carbon introduced.
• the object of the present invention is an improved plant for coal gasification, in which the carbon contained in the raw coal is used as completely as possible. Furthermore, such refinements of the invention which generate the heat required to maintain the process, preferably without burning the coal.
• the required supply of heat to the steam generator can be carried out in the conventional manner proposed in claim 3.
• Heating coils in which a heating fluid circulates, are installed in the steam gasifier, for example.
• the solution mentioned in claim 5 can be advantageous, in which the necessary heat is provided, for example, by a high-temperature reactor, the cooling gas of which heats up the water vapor gasifier .; A higher proportion of the carbon introduced is then obtained in the form of the desired methane.
• the gas mixture emerging from the hydrogenating gasifier anyway e.g. B. for the purpose of cleaning
• it can also be used according to the solution proposed in claim 6 for heating the water vapor gasifier.
• the solutions proposed in claims 7 and 8 are alternatives to the solution of the imbalances then occurring in the material and / or heat balance of the system.
• Most of the heat content of the steam to be supplied to the steam gasifier is generated by the heat of vaporization of the water. Taking into account the assumptions made regarding claim 5 above, it is then advantageous to also operate the steam generation in a nuclear manner.
• B. is also a light water reactor.
• the raw coal is first treated in a preparatory stage 1, e.g. B. dried, and then fed to a hydrogenating gasifier 3, which forms a structural unit 2 with a steam gasifier 4.
• a hydrogenating gasifier 3 which forms a structural unit 2 with a steam gasifier 4.
• the methane formed is cooled together with other gases in a first heat exchanger 5 and then passed on the primary side of a regenerative heat exchanger 6 into a washing device 7, in which the gas is freed from solid particles, tar, etc., which are then removed via a separator 8 .
• the gas then flows over the secondary side of the regenerative heat exchanger 6 and with the addition of the carbon monoxide otherwise deposited in the plant into a converter 9, in which this largely corresponds to the reaction
• the remaining inflow gas comes from the water vapor gasifier 4, into which the residual coke from the hydrogenating gasifier is passed directly and without cooling.
• the water vapor can be generated conventionally or else (indicated only by dash-dotted lines in FIG. 1) from a nuclear reactor 13.
• the strongly exothermic reaction initially takes place (as seen in the direction of flow of the steam and the added oxygen)
• the nuclear reactor 13 not only supplies the steam for the water vapor gasification, but also a hot fluid (e.g. the helium used as a coolant), which circulates in coils 16 and thus the individual fluidized bed beds of the water vapor gasifier. 4 heated. It is then possible to dispense with the supply of oxygen.
• the coils 16 can also be heated with hot product gas from the hydrogenating gasifier 3.
• oxygen must then be supplied again, albeit to a lesser extent, in order to generate the required heat by burning part of the carbon as above, or the gasification takes place at lower temperatures and generates less hydrogen.
• a part of the methane produced must then be in a cracking furnace 17 with the addition of heat and steam according to the reaction

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Combustion & Propulsion (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Industrial Gases (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Hydrogen, Water And Hydrids (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

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ID=6048289

Family Applications (1)

Country Status (7)

Families Citing this family (1)

Citations (4)

• 1978
  • 1978-08-31 DE DE2837906A patent/DE2837906C2/de not_active Expired
• 1979
  • 1979-08-21 JP JP50148079A patent/JPS55500606A/ja active Pending
  • 1979-08-21 WO PCT/DE1979/000091 patent/WO1980000443A1/de not_active Ceased
  • 1979-08-30 ZA ZA00794602A patent/ZA794602B/xx unknown
  • 1979-08-30 BE BE0/196944A patent/BE878509A/xx not_active IP Right Cessation
  • 1979-08-30 IT IT25370/79A patent/IT1122901B/it active
• 1980
  • 1980-03-25 EP EP79901101A patent/EP0016214B1/de not_active Expired

Patent Citations (4)

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