EP0148554B1 - Coal gasification process - Google Patents

Coal gasification process Download PDF

Info

Publication number
EP0148554B1
EP0148554B1 EP84305601A EP84305601A EP0148554B1 EP 0148554 B1 EP0148554 B1 EP 0148554B1 EP 84305601 A EP84305601 A EP 84305601A EP 84305601 A EP84305601 A EP 84305601A EP 0148554 B1 EP0148554 B1 EP 0148554B1
Authority
EP
European Patent Office
Prior art keywords
liquor
steam
coal
aqueous
effluent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84305601A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0148554A3 (en
EP0148554A2 (en
Inventor
John Aldwyn Lacey
James Edward Scott
Brian Hoyle Thompson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Gas Corp
Original Assignee
British Gas Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by British Gas Corp filed Critical British Gas Corp
Publication of EP0148554A2 publication Critical patent/EP0148554A2/en
Publication of EP0148554A3 publication Critical patent/EP0148554A3/en
Application granted granted Critical
Publication of EP0148554B1 publication Critical patent/EP0148554B1/en
Expired legal-status Critical Current

Links

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
    • C10J3/02—Fixed-bed gasification of lump fuel
    • C10J3/06—Continuous processes
    • C10J3/16—Continuous processes simultaneously reacting oxygen and water with the carbonaceous material
    • 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
    • C10J3/06—Continuous processes
    • C10J3/08—Continuous processes with ash-removal in liquid state
    • 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 (SNG)
    • 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

Definitions

  • This invention relates to coal gasification processes.
  • these effluent liquors can be treated to remove phenols and ammonia before biological treatments.
  • the untreated or partially treated liquor can be incinerated, leaving a solid for disposal. All of these effluent treatment processes have some disadvantage and present technological difficulties.
  • the present invention provides a process for the production of methane-containing gases wherein a feedstock comprising coal is gasified in the presence of steam and oxygen as gasifying agents, under fixed-bed, ash-slagging conditions and the product gas is treated to remove therefrom an effluent liquor containing condensed unreacted steam, water soluble compounds and condensed organic compounds characterised in that a portion of the steam requirement for the reaction is provided by adding an aqueous liquor comprising said effluent liquor togther with the said gasifying agents directly through the tuyeres into the raceway of a fixed bed ash slagging gasifier.
  • the aqueous liquor may also comprise purer forms of water such as that used for cooling purposes or as boiler feed.
  • the recycled liquor is injected at the point where the other gasifying agents are added i.e. through tuyeres into the raceway.
  • the steam buffle and tuyeres would be modified to provide liquor or water at the point of steam injection.
  • aqueous species confers a number of surprising advantages, although it was to be expected that such addition would have an adverse effect upon either the operation of the gasifier or the slag-tapping operations. However, in neither case was any difficulty noted.
  • the oxygen consumption (based upon the amount of carbonaceous material consumed) was found to have increased slightly but this was more than offset in the savings in cost in not having to raise steam.
  • the organic species are, of course, useful as a reactant species.
  • the steam requirement for gasification is substantially reduced.
  • up to about 50% of virtually all the liquor normally produced for a bituminous coal is recycled.
  • Up to 50% the total H 2 0 species requirement for the gasification reaction may be provided by the aqueous liquor viz as water per se or as recycled liquor.
  • a further advantage is that inorganic materials contained in the effluent liquor are taken up by the slag and thus are removed, with the slag, from the system.
  • the heavy metal content of the slag e.g. zirconium is increased compared with no liquor injection being employed.
  • a bleed off of some of the liquor may be desirable for treatment to remove chlorides and other salts when build up of these compounds in the recycling liquor begins to occur.
  • the aqueous liquor may contain some organic species dissolved or emulsified therein.
  • the liquor may be used as vehicle for conveying suspended solid materials, i.e. coal fines, to the reactor.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Industrial Gases (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
EP84305601A 1983-08-25 1984-08-17 Coal gasification process Expired EP0148554B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8322899 1983-08-25
GB838322899A GB8322899D0 (en) 1983-08-25 1983-08-25 Coal gasification process

Publications (3)

Publication Number Publication Date
EP0148554A2 EP0148554A2 (en) 1985-07-17
EP0148554A3 EP0148554A3 (en) 1986-01-22
EP0148554B1 true EP0148554B1 (en) 1988-10-19

Family

ID=10547868

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84305601A Expired EP0148554B1 (en) 1983-08-25 1984-08-17 Coal gasification process

Country Status (10)

Country Link
EP (1) EP0148554B1 (ja)
JP (1) JPS6076593A (ja)
KR (1) KR860001121B1 (ja)
CS (1) CS265208B2 (ja)
DE (1) DE3474685D1 (ja)
GB (3) GB8322899D0 (ja)
IN (1) IN162228B (ja)
NO (1) NO843385L (ja)
PL (1) PL145182B1 (ja)
ZA (1) ZA846540B (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0220342A1 (de) * 1985-11-01 1987-05-06 Metallgesellschaft Ag Verfahren zum Behandeln von wasserhaltigem Kondensat
DE102006041838B4 (de) * 2006-09-04 2010-08-05 Siemens Aktiengesellschaft Verfahren zum Vergasen von festen Vergasungsstoffen in Schlackebadvergasungsreaktoren
CN101812323B (zh) * 2009-08-14 2013-02-13 赛鼎工程有限公司 多元混合气化剂用于固定床固态排渣制备合成气的方法
DE102013113769B4 (de) * 2013-12-10 2020-07-16 L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Verfahren zur Festbettdruckvergasung kohlenstoffhaltiger Brennstoffe

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB237883A (en) * 1924-07-29 1926-12-20 Louis Chavanne Improved process and apparatus for the gasification of solid fuel, applicable also to volatilizing or reducing ores
GB717484A (en) * 1952-01-17 1954-10-27 Kloeckner Humboldt Deutz Ag A method and a device for the disposal of phenol-containing waste water
DE1496384A1 (de) * 1965-12-31 1969-05-14 Projektierungs Konstruktions U Verfahren zur Aushaltung und Beseitigung des Staubes aus dem Rohgas und den Kondensaten bei der Druckvergasung
NL189517C (nl) * 1974-12-05 1993-05-03 Shell Int Research Werkwijze voor de bereiding van synthesegas.
US3971636A (en) * 1974-12-23 1976-07-27 Gulf Oil Corporation Condensate scrubbing of coal gasifier product
DE2607745C2 (de) * 1976-02-26 1984-03-15 Metallgesellschaft Ag, 6000 Frankfurt Verfahren zum Behandeln von Kondensat aus der Kühlung von Rohgas der Druckvergasung fester Brennstoffe
US4175929A (en) * 1978-08-29 1979-11-27 The United States Of America As Represented By The United States Department Of Energy Process for control of pollutants generated during coal gasification
US4199327A (en) * 1978-10-30 1980-04-22 Kaiser Engineers, Inc. Process for gasification of coal to maximize coal utilization and minimize quantity and ecological impact of waste products
JPS5699295A (en) * 1979-12-29 1981-08-10 Chiyouei Ko Gas generator
SE434163B (sv) * 1981-03-10 1984-07-09 Skf Steel Eng Ab Sett och anordning for framstellning av en huvudsakligen koloxid och vetgas innehallande gas ur kol- och/eller kolvetehaltigt utgangsmaterial
EP0083670A1 (de) * 1982-01-07 1983-07-20 Ruhrkohle Aktiengesellschaft Verfahren zur Beseitigung teersäurehaltiger Prozessabwässer
GB2116580B (en) * 1982-03-12 1985-04-11 British Gas Corp Gasifying coal in fixed bed ash-slagging gasifier

Also Published As

Publication number Publication date
NO843385L (no) 1985-02-26
IN162228B (ja) 1988-04-16
ZA846540B (en) 1985-03-27
GB2146039B (en) 1987-10-14
CS642384A2 (en) 1988-07-15
GB8421038D0 (en) 1984-09-19
PL145182B1 (en) 1988-08-31
EP0148554A3 (en) 1986-01-22
CS265208B2 (en) 1989-10-13
EP0148554A2 (en) 1985-07-17
GB8322899D0 (en) 1983-09-28
KR850001919A (ko) 1985-04-10
GB8420360D0 (en) 1984-09-12
JPS6076593A (ja) 1985-05-01
PL249331A1 (en) 1985-05-07
KR860001121B1 (ko) 1986-08-13
GB2146039A (en) 1985-04-11
DE3474685D1 (en) 1988-11-24

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