Classifications

• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
  • C10B21/00—Heating of coke ovens with combustible gases
  • C10B21/02—Heating of coke ovens with combustible gases with lean gas
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
  • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
  • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
  • B01D53/047—Pressure swing adsorption
• • C—CHEMISTRY; METALLURGY
  • C01—INORGANIC CHEMISTRY
  • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
  • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
  • C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
  • C01B3/56—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids
• • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2256/00—Main component in the product gas stream after treatment
  • B01D2256/24—Hydrocarbons
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2257/00—Components to be removed
  • B01D2257/10—Single element gases other than halogens
  • B01D2257/108—Hydrogen
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2257/00—Components to be removed
  • B01D2257/30—Sulfur compounds
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2257/00—Components to be removed
  • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
  • B01D2257/702—Hydrocarbons
• • C—CHEMISTRY; METALLURGY
  • C01—INORGANIC CHEMISTRY
  • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
  • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
  • C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
  • C01B2203/042—Purification by adsorption on solids
  • C01B2203/043—Regenerative adsorption process in two or more beds, one for adsorption, the other for regeneration
• • C—CHEMISTRY; METALLURGY
  • C01—INORGANIC CHEMISTRY
  • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
  • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
  • C01B2203/04—Integrated processes for the production of hydrogen or synthesis gas containing a purification step for the hydrogen or the synthesis gas
  • C01B2203/0465—Composition of the impurity
  • C01B2203/048—Composition of the impurity the impurity being an organic compound
• • 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
  • C10J2300/16—Integration of gasification processes with another plant or parts within the plant
• • 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
  • C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
  • C10J2300/1618—Modification of synthesis gas composition, e.g. to meet some criteria
• • 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
• • 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
• • 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
  • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
  • Y02E60/30—Hydrogen technology
  • Y02E60/32—Hydrogen storage

Definitions

• the invention pertains to a method for operating a coke oven arrangement, wherein the coke oven gas accumulated during the coking process is utilized as a working gas.
• the coke oven gas accumulating during a coking process is usually burned and therefore only utilized energetically although coke oven gas contains large amounts of the valuable components hydrogen and methane.
• the main reason for reservations against such utilization is that the coke oven gas is no longer available as a heating gas and the lacking heating energy needs to be provided otherwise.
• DE 34 244 24 A1 discloses a method, in which the coke oven gas accumulating during a coking process is utilized in the form of a working gas.
• hydrogen is extracted and a suitable H 2 —CO ratio is adjusted in order to subsequently produce a synthetic natural gas by means of methanation.
• blast furnace gas or methane is used as substitute gas for the undergrate firing of the coke oven gas battery.
• the use of blast furnace gas or methane may be considered if a steel mill or a coal mine is located in the immediate vicinity of the coke oven plant and the use of these substitute gases proves to be economical. Since these requirements only are rarely fulfilled in practical applications, the coke oven gas usually is only utilized for heating purposes as mentioned above.
• the present invention is based on the objective of allowing a flexible and efficient utilization of the coke oven gas accumulating during the operation of a coke oven arrangement.
• This objective is attained with the object of the invention, namely a method for operating a coke oven arrangement with the initially described characteristics, characterized in that for providing at least a part of the thermal energy necessary for the cooking process, a synthesis gas is being fed as a fuel gas, the synthesis gas being produced from fossil fuel by means of a gasification process.
• a particularly high flexibility of the method for operating a coke oven arrangement is achieved due to the utilization of a fossil fuel for producing the synthesis gas.
• making available the fossil fuel and carrying out the gasification process for producing the synthesis gas is associated with additional investment and process costs, economical advantages are achieved due to the recovery of the valuable components contained in the coke oven gas.
• the gas components such as hydrogen and/or methane that accumulate in the coke oven gas during a coking process and to either utilize these gas components as an end product or to convert the gas components into products of even higher value, wherein the lacking amount of energy for the coking process and possibly also a blast furnace process is replaced with the synthesis gas produced from the fossil fuel by means of gasification.
• the crude synthesis gas being produced usually only needs to be desulfurized before it can be utilized as fuel gas in order to provide part of the thermal energy required for the coking process, particularly for the undergrate firing of coke oven batteries.
• the synthesis gas used as fuel gas does not require elaborate processing that, among other things, also includes the removal of carbon dioxide.
• the synthesis gas produced from the fossil fuel may be exclusively utilized as fuel gas in order to generate thermal energy.
• the quantity of synthesis gas being produced exceeds the quantity required as a substitute for the coke oven gas utilized in accordance with the invention. It may be provided that a first portion of the synthesis gas being produced is utilized as fuel gas and another portion of the synthesis gas being produced is used for an additional conversion and subsequent utilization.
• impurities such as tar, naphthalene, aromatic hydrocarbons (BTX-components), sulfur and ammonia are initially removed from the coke oven gas accumulating during the coking process analogous to a conventional coking process known from the state of the art.
• the thusly cleaned coke oven gas is compressed in order to extract hydrogen and/or hydrocarbons.
• a pressure swing adsorption (PSA) in a PSA-system, wherein the hydrogen is extracted in highly pure form on the pressure side of the PSA-system.
• PSA pressure swing adsorption
• the pressure swing adsorption may be carried out in a conventional PSA-system or in a vacuum PSA-system (VPSA-system).
• a methane-rich gas is obtained on the expansion side of the PSA-system and separated from the remaining gas components, particularly carbon monoxide (CO), carbon dioxide (CO 2 ), nitrogen, acetylene and residual hydrogen.
• the removal of nitrogen, carbon monoxide and residual hydrogen may be realized, for example, by means of a low-temperature distillation, wherein carbon dioxide and water vapor previously need to be removed with suitable methods such as, e.g., amine scrubbing and/or molecular sieve drying.
• the hydrocarbon components thusly recovered as working gas can be supplied to a natural gas network and/or kept on hand for another synthesis.
• the gas components recovered from the coking gas can be used as end products or converted into products of even higher value, wherein a portion of the synthesis gas produced during the gasification of the fossil fuel can also be used for another synthesis and conversion.
• Advantageous optional utilizations are described below.
• the extracted hydrogen can be generally utilized as hydrogenating hydrogen in adjacent chemical plants such as, for example, refineries.
• it is proposed to subject the produced hydrogen and a portion of the synthesis gas produced due to the gasification of the fossil fuel to an additional conversion, wherein the hydrogen is converted into products of higher value with a portion of the carbon monoxide of the synthesis gas.
• the CO-conversion can be carried out with the addition of water vapor, wherein carbon dioxide is at least partially removed after a desulfurization of the converted synthesis gas, wherein the remaining gas flow is subsequently subjected to a pressure swing adsorption in order to remove hydrogen, and wherein the off-gas that is depleted of hydrogen and accumulates during this process is used as fuel gas for the coking process.
• This thermally utilized off-gas usually represents a portion of the overall fuel gas required for providing the thermal energy.
• the synthesis gas obtained from the fossil fuel may also be utilized for generating power with a combined gas and steam turbine plant (GUD-process).
• GUID-process combined gas and steam turbine plant
• a portion of the thermal energy required for the coking process is provided by a synthesis gas in the form of fuel gas that is obtained from a fossil fuel by means of a gasification process, preferably by means of coal gasification.
• the residual gases and waste gases accumulating in the various subsequent process stages may also be used for burning in order to provide another portion of the thermal energy.
• the off-gas of the preferably used PSA-system in particular, usually still has a high content of combustible components that can be thermally utilized by being burned.
• high-quality fuels with a higher calorific value such as, for example, natural gas can also be admixed. Such an admixing may be required for adjusting a desired Wobbe index or for compensating an energy demand that is not yet covered by the additional fuel gases.

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Organic Chemistry (AREA)
• Combustion & Propulsion (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Materials Engineering (AREA)
• Inorganic Chemistry (AREA)
• Analytical Chemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Industrial Gases (AREA)
• Hydrogen, Water And Hydrids (AREA)
• Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Applications Claiming Priority (3)

Publications (1)

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Citations (11)

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• 2009
  • 2009-09-22 DE DE102009042520A patent/DE102009042520A1/de not_active Withdrawn
• 2010
  • 2010-08-18 KR KR1020127010109A patent/KR20120074294A/ko not_active Application Discontinuation
  • 2010-08-18 JP JP2012530196A patent/JP2013505342A/ja active Pending
  • 2010-08-18 CN CN2010800505839A patent/CN102639675A/zh active Pending
  • 2010-08-18 US US13/497,361 patent/US20120217148A1/en not_active Abandoned
  • 2010-08-18 CA CA2774898A patent/CA2774898A1/en not_active Abandoned
  • 2010-08-18 EP EP10742854A patent/EP2480631A1/de not_active Withdrawn
  • 2010-08-18 WO PCT/EP2010/062024 patent/WO2011035993A1/de active Application Filing
  • 2010-08-18 RU RU2012116149/05A patent/RU2533149C2/ru not_active IP Right Cessation
  • 2010-08-18 AU AU2010297521A patent/AU2010297521A1/en not_active Abandoned
  • 2010-09-21 TW TW099132072A patent/TW201118161A/zh unknown
• 2012
  • 2012-04-12 IN IN3166DEN2012 patent/IN2012DN03166A/en unknown

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