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WO2015192929A1 - Procédé de démarrage d'un réacteur de gazéification sous pression à lit fixe - Google Patents

Procédé de démarrage d'un réacteur de gazéification sous pression à lit fixe Download PDF

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Publication number
WO2015192929A1
WO2015192929A1 PCT/EP2015/000826 EP2015000826W WO2015192929A1 WO 2015192929 A1 WO2015192929 A1 WO 2015192929A1 EP 2015000826 W EP2015000826 W EP 2015000826W WO 2015192929 A1 WO2015192929 A1 WO 2015192929A1
Authority
WO
WIPO (PCT)
Prior art keywords
bed
gas
fuel
fixed
heating
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.)
Ceased
Application number
PCT/EP2015/000826
Other languages
English (en)
Inventor
Osman Turna
Frederic Judas
Volker Deisinger
Jens WÜRDIG
Michael Kress
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.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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 Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of WO2015192929A1 publication Critical patent/WO2015192929A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • C10J3/72—Other features
    • C10J3/726—Start-up
    • 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
    • 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
    • C10J3/78—High-pressure apparatus

Definitions

  • This invention relates to a method for heating the carbonaceous fuel on start-up of a fixed-bed pressure gasification reactor for producing synthesis gas by converting the carbonaceous fuel, for example coal, coke or lumpy biomass, with sufficiently high carbon content by using oxygen, air and/or water vapor as gasification medium.
  • Ignition temperature here is understood to be the temperature at which after addition of the gasification medium, the same reacts with the carbon contained in the fuel to obtain carbon oxides and hydrogen.
  • the laid-open publication DE 4 013 739 A1 teaches that for heating up the fuel bed in the fixed-bed pressure gasification reactor an ignition fuel is supplied to the same and either is ignited already before being supplied or can be ignited by an ignition initial in the reactor.
  • the fixed-bed pressure gasification reactor can be filled with fuel and thereafter be heated by means of steam up to above the self-ignition temperature of the gasification substance and finally can be ignited with an air-steam mixture.
  • DE 4 013 739 A1 finally proposes to supply an ignition start-up gasification medium mixture, wherein during heating the composition of the ignition start-up gasification medium mixture is chosen such that the oxygen content just is high enough to provide for a steady increase of the temperature level in the reactor, but on the other hand there cannot be produced an explosible gas mixture, even in the case of non-conversion of the oxygen content in the reactor.
  • the ignition start-up gasification medium mixture is prepared in a sub-critical composition, wherein critical composition is understood to be the oxygen content in the gas mixture which in the case of non-conversion in the reactor would be sufficient to form an explosible gas mixture in the start-up raw gas or in the mixture of start-up raw gas and raw gas.
  • the heating medium discharged from the fixed-bed pressure gasification reactor in the start-up phase generally is disposed of via a waste gas disposal system, for example a flare system.
  • the product gas leaving the fixed-bed pressure gasification reactor is supplied to the synthesis gas/product gas collecting line only after start-up has been effected completely. Thus, a part of the fuel is lost, as it does not get into the synthesis gas product.
  • the object is solved by a method for heating up the fuel bed on start-up of a fixed- bed pressure gasification reactor, comprising the following method steps:
  • a. providing a fixed-bed pressure gasification reactor purged free of oxygen and pressurized with nitrogen to operating pressure, comprising a gasification medium inlet, a product gas outlet, a fuel bed of solid carbonaceous fuel, which is arranged on an ash discharge grate, a fuel supply device, and an ash discharge device;
  • step c) carrying out step c), until at least in a part of the fuel bed the ignition temperature of the fuel is reached,
  • heating gas used in step c. is carbon dioxide or an inert gas, in particular nitrogen.
  • the operating pressure of the fixed-bed pressure gasification reactor is at least 20 bar, absolute, preferably at least 40 bar. These are usual operating pressures for fixed-bed pressure gasification reactors which are safely mastered in the art.
  • the heating gas discharged via the product gas outlet during start-up is guided into the synthesis gas/product gas collecting line, but not into a waste gas disposal system.
  • the same is partly converted to carbon monoxide, i.e. to a synthesis gas constituent, in the final phase of the start-up.
  • a preferred aspect of the invention furthermore consists in that the heating gas is introduced into the fuel bed through the ash discharge grate. In this way, an efficient contact of the heating gas to the fuel bed is achieved, without having to create special passages for the heating gas into the reactor interior and into the fuel bed.
  • a further preferred aspect of the invention consists in that the heating gas is introduced into the fuel bed with a temperature of at least 450°C, preferably at least 500°C, particularly preferably of at least 550°C. Due to these high temperatures achievable with carbon dioxide or inert gas with an economically justifiable expenditure, it is also possible to ignite types of coal or coke which so far only can be ignited by igniting solid fuel, such as wood, in the reactor. In accordance with a development of the heating method, the following working steps are carried out subsequently, in order to terminate the start-up of the fixed- bed pressure gasification reactor:
  • the invention provides a method by means of which the heating of a fuel bed of a fixed-bed pressure gasification reactor, which consists of coal or coke with high ignition temperature, is possible in a technically simple way.

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)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

L'invention concerne un procédé pour chauffer le lit de combustible au démarrage d'un réacteur de gazéification sous pression à lit fixe, dans lequel est utilisé comme gaz de chauffage du dioxyde de carbone ou un gaz inerte, comme l'azote. L'opération de chauffage est effectuée à la pression de fonctionnement future du réacteur de gazéification sous pression à lit fixe.
PCT/EP2015/000826 2014-06-20 2015-04-21 Procédé de démarrage d'un réacteur de gazéification sous pression à lit fixe Ceased WO2015192929A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014108672.4 2014-06-20
DE102014108672.4A DE102014108672A1 (de) 2014-06-20 2014-06-20 Verfahren zur Inbetriebnahme eines Festbettdruckvergasungsreaktors

Publications (1)

Publication Number Publication Date
WO2015192929A1 true WO2015192929A1 (fr) 2015-12-23

Family

ID=53039842

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/000826 Ceased WO2015192929A1 (fr) 2014-06-20 2015-04-21 Procédé de démarrage d'un réacteur de gazéification sous pression à lit fixe

Country Status (2)

Country Link
DE (1) DE102014108672A1 (fr)
WO (1) WO2015192929A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111826206A (zh) * 2019-04-15 2020-10-27 乔治洛德方法研究和开发液化空气有限公司 在线控制造渣气化工艺的方法和用于气化工艺的设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4013739A1 (de) 1989-07-24 1991-01-31 Schwarze Pumpe Gas Veb Verfahren zur inbetriebnahme von vergasungsreaktoren
US20110277385A1 (en) * 2010-05-17 2011-11-17 General Electric Company System and method for conveying a solid fuel in a carrier gas
WO2013022672A1 (fr) * 2011-08-11 2013-02-14 Kellogg Brown & Root Llc Systèmes et procédés pour le démarrage d'un réacteur de gazéification
US20130069009A1 (en) * 2011-09-19 2013-03-21 Kellogg Brown & Root Llc Systems And Methods For Controlling The Gasification Of Hydrocarbon Feedstocks

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3709225C1 (en) * 1987-03-20 1988-06-16 Metallgesellschaft Ag Method for starting the gasification of solid fuels in a fixed bed

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4013739A1 (de) 1989-07-24 1991-01-31 Schwarze Pumpe Gas Veb Verfahren zur inbetriebnahme von vergasungsreaktoren
US20110277385A1 (en) * 2010-05-17 2011-11-17 General Electric Company System and method for conveying a solid fuel in a carrier gas
WO2013022672A1 (fr) * 2011-08-11 2013-02-14 Kellogg Brown & Root Llc Systèmes et procédés pour le démarrage d'un réacteur de gazéification
US20130069009A1 (en) * 2011-09-19 2013-03-21 Kellogg Brown & Root Llc Systems And Methods For Controlling The Gasification Of Hydrocarbon Feedstocks

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Ullmanns Encyclopedia of Industrial Chemistry", vol. 15, pages: 369

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111826206A (zh) * 2019-04-15 2020-10-27 乔治洛德方法研究和开发液化空气有限公司 在线控制造渣气化工艺的方法和用于气化工艺的设备
CN111826206B (zh) * 2019-04-15 2024-05-14 乔治洛德方法研究和开发液化空气有限公司 在线控制造渣气化工艺的方法和用于气化工艺的设备

Also Published As

Publication number Publication date
DE102014108672A1 (de) 2015-12-24

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