EP2286072A2 - Cycle combiné turbine à gaz/turbine à vapeur modifié à gazéification sous pression intégrée de charbon - Google Patents

Cycle combiné turbine à gaz/turbine à vapeur modifié à gazéification sous pression intégrée de charbon

Info

Publication number
EP2286072A2
EP2286072A2 EP09757167A EP09757167A EP2286072A2 EP 2286072 A2 EP2286072 A2 EP 2286072A2 EP 09757167 A EP09757167 A EP 09757167A EP 09757167 A EP09757167 A EP 09757167A EP 2286072 A2 EP2286072 A2 EP 2286072A2
Authority
EP
European Patent Office
Prior art keywords
gas
synthesis gas
turbine
combustion
slag
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.)
Withdrawn
Application number
EP09757167A
Other languages
German (de)
English (en)
Inventor
Ralf Abraham
Domenico Pavone
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Uhde GmbH
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 Uhde GmbH filed Critical Uhde GmbH
Publication of EP2286072A2 publication Critical patent/EP2286072A2/fr
Withdrawn legal-status Critical Current

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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
    • C10J3/48—Apparatus; Plants
    • C10J3/52—Ash-removing devices
    • 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; Reversible storage of hydrogen
    • C01B3/02—Production of hydrogen; Production of gaseous mixtures containing hydrogen
    • C01B3/32—Production of hydrogen; Production of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide or air
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C10K1/02—Dust removal
    • C10K1/026—Dust removal by centrifugal forces
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C10K1/32—Purifying combustible gases containing carbon monoxide with selectively adsorptive solids, e.g. active carbon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
    • F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
    • F02C3/26—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products the fuel or oxidant being solid or pulverulent, e.g. in slurry or suspension
    • F02C3/28—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products the fuel or oxidant being solid or pulverulent, e.g. in slurry or suspension using a separate gas producer for gasifying the fuel before combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
    • 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
    • C01B2203/02—Processes for making hydrogen or synthesis gas
    • C01B2203/0205—Processes for making hydrogen or synthesis gas containing a reforming step
    • C01B2203/0227—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step
    • C01B2203/0244—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step the reforming step being an autothermal reforming step, e.g. secondary reforming processes
    • 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
    • C01B2203/02—Processes for making hydrogen or synthesis gas
    • C01B2203/025—Processes for making hydrogen or synthesis gas containing a partial oxidation step
    • 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
    • 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
    • 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
    • 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
    • C01B2203/14—Details of the flowsheet
    • C01B2203/146—At least two purification steps in series
    • C01B2203/147—Three or more purification steps in series
    • 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
    • C01B2203/80—Aspect of integrated processes for the production of hydrogen or synthesis gas not covered by groups C01B2203/02 - C01B2203/1695
    • C01B2203/84—Energy production
    • 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
    • C10J2300/1606—Combustion processes
    • 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
    • C10J2300/164—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
    • C10J2300/1653—Conversion of synthesis gas to energy integrated in a gasification combined cycle [IGCC]
    • 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
    • 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]
    • 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]
    • 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
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/10—Biofuels, e.g. bio-diesel

Definitions

  • the invention relates to a process for the production of synthesis gas from a carbonaceous fuel, such as all types of coals, coke, petrol coke, biomass, but also emulsions, Orimulsion, etc. and its combustion to generate heat and energy.
  • a carbonaceous fuel such as all types of coals, coke, petrol coke, biomass, but also emulsions, Orimulsion, etc. and its combustion to generate heat and energy.
  • the process according to the invention makes it easy to purify synthesis gas without further cooling down and to use its heat and pressure energy initially for generating electricity and its chemical energy via a conventional combined process for generating electricity.
  • Through the intermediate purification of the synthesis gas the production of electricity through an additional turbine is possible without it being possible for the turbines to be damaged by corrosive components.
  • the invention also relates to a device with which this method can be implemented.
  • DE 1020 07063118 A1 describes a process for purifying a synthesis gas by bringing it into contact with getter ceramics, wherein the synthesis gas is passed without prior cooling into a slag separation device in which slag droplets are withdrawn as liquid slag.
  • the Schlackeabscheidevoriques can be made as a cyclone-like device or as a packed bed of an inert material, in which the slag is separated from the gas.
  • the synthesis gas produced is used for the production of chemical products.
  • the pressure energy from the combustion is used optimally.
  • the heat of the combustion gas expanded through the turbine is then used for the generation of steam.
  • the steam drives a steam turbine with which electricity can be generated. This process - the simultaneous use of the combustion energy of combustion and the generation of steam to drive a steam turbine - is commonly referred to as a combi process.
  • the gas used in this case must be free of corrosive constituents.
  • many technical gases used to generate energy are not.
  • synthesis gas produced in a coal gasification process still contains a larger amount of molten slag directly behind the gasification plant part.
  • halogen compounds such as alkali vapors or hydrogen halides.
  • This is associated with problems in the use of a turbine upstream of the combustion process.
  • the aggressive components in the synthesis gas can damage the turbine blades, the turbine shaft or the bearings.
  • purified gases must be used when using upstream turbines.
  • the purification of synthesis gas is associated with great expense.
  • the synthesis gas obtained must be cooled down for this purpose and passed through a gas scrubber. After gas scrubbing, a purified gas is obtained, which may need to be reheated for incineration. This is associated with high costs.
  • gas scrubbing processes require a high expenditure on equipment.
  • the process for generating electricity is preferably a combined process which uses the combustion gases in two stages to generate electricity.
  • Such systems have a high efficiency when properly constructed.
  • the fuel can be better utilized.
  • a larger number of fuels can be used in the production of synthesis gas with downstream combustion.
  • the invention solves this problem by the provision of an integrated method for hot cleaning of a synthesis gas.
  • the synthesis gas is passed through a slag and alkali separating device after manufacture.
  • the slag-separating device may be of any type, but preferably a cyclone-type device is used.
  • the alkali-ion or alkali-removing device is a getter ceramic, which is preferably accommodated in a container through which the gas to be purified flows. It is also possible to add the gettering ceramic already for the deposition of the alkali ions or alkalis to the fuel.
  • the invention also provides an apparatus for carrying out this method.
  • the method is particularly well suited for providing electricity from synthesis gas in a combined process, it is also possible to use this method for the combustion of synthesis gas with the purpose of the simple generation of steam and the production of electricity. In this case, the investment costs are reduced by saving a gas turbine.
  • the entire process is preferably also equipped with a gas turbine that uses the combustion pressure energy.
  • the method thus uses the pressure energy from the production of the heating gas, from the combustion and from the generation of steam.
  • both pressure and heat are used to generate energy.
  • Claimed is in particular a process for the production and combustion of synthesis gas by gasification with air or oxygen or oxygen-enriched air with a possible proportion of water vapor, wherein
  • a solid or liquid fuel is added to a reactor in which the fuel is reacted with air or oxygen or oxygen-enriched air and with water vapor at elevated temperature to a synthesis gas consisting essentially of hydrogen and carbon monoxide, and
  • the synthesis gas is passed without prior cooling into a slag separation apparatus in which slag droplets agglomerate and are withdrawn as liquid slag and the gaseous alkalis and hydrogen chloride contained in the synthesis gas are removed from the synthesis gas by contacting with gettering ceramic, and
  • the synthesis gas is then burned and relaxed in one of the downstream process stages of a gas turbine and the combustion gases are used to drive a turbine and to generate steam.
  • the process steps of the deposition of slag and alkali are preferably carried out in succession after the process of coal gasification.
  • the deposition of the slag takes place in a cyclone-like device in which the gas performs a circular movement, so that a large part of the slag is excreted by centrifugal forces.
  • the alkali-separating device may be of any kind.
  • getter ceramics are used in the form of any geometric shapes that filter out the corrosive alkalis from the synthesis gas.
  • the gettering ceramic can also be given in the form of fine particles for synthesis gas production. In this way, the alkalis are already filtered out of the process in the gasification chamber.
  • the synthesis gas can be passed through an expansion turbine. It is a turbine for generating rotational energy with gas pressure. This can be of any kind. Depending on the operating pressure of the gasification, it can be, for example, a high-pressure or low-pressure turbine. In this way you can adapt the turbine to the process. By the deposition of slag and alkalis, the expansion turbine has a significantly increased life. The turbine can thus be designed cheaper and has significantly extended maintenance intervals.
  • the gas After the expansion of the gas by passing through the expansion turbine, the gas is passed to the combustion. Depending on the purity of the gas, it may be necessary to supply this additional gas cleaning by a gas scrubber. Gas scrubbing is particularly necessary if the coal used is very sulphurous and the sulfur must be removed from the combustion gas.
  • the gas scrubbing is carried out by the usual gas scrubbing methods and is exemplified by a physical solvent.
  • An example of a suitable method is the WO 2005054412 Al It is also possible to use a chemical solvent.
  • a solid chemical sorbent This is particularly useful if the exhaust gas has to be particularly low in sulfur.
  • the rotational energy of the turbine can be used to generate electricity. However, this can also be used to drive plant components, such as Pumps or
  • the driven compressor may compress the air to carry out coal gasification or combustion.
  • the air separation plant operated with oxygen from an air separation plant, so the air separation plant can be driven with the turbine.
  • this can also be done partially, ie with branches of rotational energy for the partial generation of electricity.
  • the process for generating electricity is a combined process. This uses both the pressure energy of the gas after combustion to drive a turbine and the generated steam. After passing through the gas turbine, a boiler is heated in which feed water is evaporated. The generated steam is under pressure and can drive a turbine. When passing through the turbine or turbines, the steam is largely relaxed. After relaxing, the steam is condensed in a preferred embodiment and reused as feed water. However, the combustion gas can be burned directly and used to generate steam. Although the system costs are lower, the efficiency of the entire process is also lower overall.
  • the turbines can be used to generate electricity. But it is also possible to use these for driving system parts such as compressors or pumps.
  • the process for producing the synthesis gas can be of any kind. As fuel all solid and liquid carbonaceous fuels are considered. These may be, for example, all types of coal, carbon emulsion, orimulsions, petroleum coke, biofuels or plastics in comminuted form.
  • the method may also include preparatory steps such as storing, grinding, and squeezing the fuel.
  • the coal gasification is carried out in a typical embodiment at 800 to 1800 0 C.
  • a typical pressure to carry out the coal gasification is a pressure of 0.1 to 10 MPa. This can fluctuate during the course of the process.
  • a device with which the method according to the invention can be carried out This naturally consists of several plant components, as they are often found in Kraftwerksbau.
  • Claimed in particular is an apparatus for the production and combustion of synthesis gas, which consists of a coal gasification reactor which is suitable for the gasification of carbonaceous fuels at high temperatures, wherein the coal gasification reactor is followed by a purification unit for the purification of the synthesis gas, which consists of a depositing device and consists of an alkali-separating device, and the cleaning unit for purifying the synthesis gas is followed by an expansion turbine, and the gas flowing from the expansion turbine gas is passed in one of the subsequent process steps in the combustion chamber of a gas turbine, where the synthesis gas can be burned and the combustion unit is followed by a gas turbine powered by the combustion gas to generate electricity, and the combustion gas is supplied to a steam generator which generates steam, which is then passed into a steam turbine generating power.
  • the device according to the invention includes a gas turbine for generating energy from the combustion of the useful gas.
  • the coal gasification reactor for producing the synthesis gas may be of any kind.
  • the slag-separating device consists of a cyclone-like device. This uses the centrifugal forces of the gas to separate the slag droplets. This contains a discharge nozzle and a discharge device for the slag. It is also possible to use a packed bed of a slag-resistant material. To carry out the slag, the bed then advantageously contains a discharge device for liquid slag.
  • the fill typically consists of a granular material of, for example, oxide or non-oxide ceramics or a mixture of these two ceramics.
  • the alkali separating device is preferably housed in a container containing getter ceramic.
  • getter ceramic typically consists of silicon dioxide or silicates or aluminates or aluminum oxide.
  • the gettering ceramic may also consist of a mixture of these substances or be a compound of a mixture of these substances.
  • the gettering ceramic must have a good absorption capacity for alkalis and halides. It should advantageously also be able to absorb alkaline earth halides or halide hydrogens. This can be used as a ballast, as a grid, in
  • the device may also contain a gas scrubber.
  • a gas scrubber typically located in the process flow between the expansion turbine and the combustion. This is with the ones for it equipped devices and equipment. It is also possible to install system parts for the addition of chemical sorbents at this point. Examples of suitable chemical sorbents are limestone, dolomite or alkaline earth hydroxides. However, transition metal-containing compounds may also be considered.
  • the device according to the invention can contain all plant parts that are necessary for a power plant construction. These may be pumps, valves, compressors or vacuum generating devices. But these can also be heaters or cooling devices or heat exchangers.
  • the turbines in the process can be of any kind. These can be radial or axial turbines. Depending on the pressure of the relaxing gas, these are high-pressure or low-pressure turbines, which differ in the blade arrangement and blade density. The choice of the appropriate turbine is left to the person skilled in the art. But it is also possible to switch the turbines and compressors in a Einwellenan- order with the generator. By this design, the control of the turbine set is easier and the design saves space and significantly cheaper.
  • the steam generating unit also contains all the necessary devices. These can be steam boilers and evaporators of all possible types. Also typically encountered components that are widely used, such as centrifugal water and superheater may be part of the device according to the invention. These are also drive shafts and generators.
  • the inventive method offers the possibility to achieve power generation with a very high efficiency.
  • the process requires no elaborate combustion devices, but allows a space-saving process via a coal gasification.
  • gas-cleaning devices By integrating gas-cleaning devices as required, it is also possible to achieve a very low emission exhaust gas.
  • FIG. 1 shows the process flow of a method according to the invention.
  • a coal gasification reactor (1) a carbonaceous fuel is added. The- This is mixed with an oxygen-containing gas (2) and, if necessary, with steam (3), so that the fuel is converted into generator gas or synthesis gas.
  • the coal gasification reactor from a compressor (19) with combustion air (4) can be acted upon or is supplied with oxygen (2a) from an air decomposition (2b).
  • the air separation plant (2b) can also be supplied with air (4) from the compressor (19).
  • This is placed in a slag-separating device (6). It is freed from the liquefied slag particles.
  • the precipitated slag (7) is obtained.
  • the synthesis gas freed from liquid slags is carried on (8) and enters an alkali-separating device (9) with a getter ceramic (10).
  • the purified and alkalis-free synthesis gas (11) then drives an expansion turbine
  • the expanded synthesis gas (14) enters a gas purification (15). There it is freed from the unwanted foreign gases. Subsequently, the synthesis gas is burned in a combustion chamber (16). The hot exhaust gas (16a), which flows through a turbine (17), is obtained. The turbine drives a generator (18) and a compressor (19). The generator (18) generates electricity. Compressed air (4) is obtained by the compressor for the combustion process (4a), the air separation (4b) or the gasification process (4c). This entire unit forms part of plant B (gas purification and combustion).
  • the exhaust gas (20) from the gas turbine enters a steam generator (21).
  • steam (22) is generated, which drives a turbine (23).
  • the steam enters a condenser (24), is liquefied and returned to the process.
  • a generator (25) is driven, which supplies power.
  • the gas (26) flowing out of the steam generator is discharged and optionally supplied for cleaning. This entire unit forms the plant part C (steam generation).
  • Compressed air a Compressed air for combustion b Compressed air for air separation plant c Compressed air to the coal gasification reactor

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Industrial Gases (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

L'invention concerne un procédé pour la production, la purification et la combustion de gaz de synthèse à des fins de production d'énergie électrique. Le gaz de synthèse est produit à partir d'un combustible carboné solide, avec un gaz oxygéné, et purifié par élimination des scories, et par élimination des alcalis. Après cette purification, le gaz de synthèse produit arrive dans une turbine de détente où la pression est utilisée pour la production de courant. La purification et l'élimination des alcalis permettent de protéger la turbine contre la corrosion et les agressions mécaniques. Le gaz de synthèse détendu est ensuite brûlé sous pression et la combustion est utilisée dans un cycle combiné comprenant une turbine à gaz, la production de vapeur et une turbine à vapeur, pour la production d'électricité. Le cycle présente ainsi un rendement accru. L'invention concerne également un dispositif permettant la mise en oevre du procédé de l'invention.
EP09757167A 2008-06-02 2009-05-15 Cycle combiné turbine à gaz/turbine à vapeur modifié à gazéification sous pression intégrée de charbon Withdrawn EP2286072A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008026267A DE102008026267A1 (de) 2008-06-02 2008-06-02 Modifizierter Gas- und Dampfturbinenprozess mit integrierter Kohledruckvergasung
PCT/EP2009/003470 WO2009146784A2 (fr) 2008-06-02 2009-05-15 Cycle combiné turbine à gaz/turbine à vapeur modifié à gazéification sous pression intégrée de charbon

Publications (1)

Publication Number Publication Date
EP2286072A2 true EP2286072A2 (fr) 2011-02-23

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EP09757167A Withdrawn EP2286072A2 (fr) 2008-06-02 2009-05-15 Cycle combiné turbine à gaz/turbine à vapeur modifié à gazéification sous pression intégrée de charbon

Country Status (12)

Country Link
US (1) US8951316B2 (fr)
EP (1) EP2286072A2 (fr)
KR (1) KR101606601B1 (fr)
CN (1) CN102149795A (fr)
AU (1) AU2009254315A1 (fr)
BR (1) BRPI0913260A2 (fr)
CA (1) CA2725503A1 (fr)
DE (1) DE102008026267A1 (fr)
RU (1) RU2528998C2 (fr)
UA (1) UA99769C2 (fr)
WO (1) WO2009146784A2 (fr)
ZA (1) ZA201008639B (fr)

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US9816401B2 (en) * 2015-08-24 2017-11-14 Saudi Arabian Oil Company Modified Goswami cycle based conversion of gas processing plant waste heat into power and cooling
KR20180044377A (ko) * 2015-09-01 2018-05-02 8 리버스 캐피탈, 엘엘씨 내포된 이산화탄소(co2) 사이클들을 이용하는 동력 생산을 위한 시스템들 및 방법들
US11261783B2 (en) * 2017-10-30 2022-03-01 Doosan Heavy Industries & Construction Co., Ltd. Combined power generation system employing pressure difference power generation

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Also Published As

Publication number Publication date
US20110120139A1 (en) 2011-05-26
KR101606601B1 (ko) 2016-03-25
CA2725503A1 (fr) 2009-12-10
AU2009254315A1 (en) 2009-12-10
DE102008026267A1 (de) 2009-12-03
US8951316B2 (en) 2015-02-10
WO2009146784A2 (fr) 2009-12-10
ZA201008639B (en) 2011-09-28
RU2528998C2 (ru) 2014-09-20
WO2009146784A3 (fr) 2011-01-06
BRPI0913260A2 (pt) 2016-01-19
RU2010154458A (ru) 2012-07-20
KR20110022580A (ko) 2011-03-07
CN102149795A (zh) 2011-08-10
UA99769C2 (ru) 2012-09-25

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