# US 2014/0190146 A1 · Carbon dioxide membrane separation system in coal gasification process, and integrated coal gasification combined cycle power generation facility using same

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- Number: US 2014/0190146 A1
- Document ID: US20140190146A1
- Status: Published application
- Kind: A1
- Application number: 14/112,650
- Filed: 2012-04-19
- Published: 2014-07-10
- Earliest claimed: 2011-04-28
- Assignees: Hitachi Zosen Corporation
- Inventors: Suguru Fujita; Ken-ichi Sawamura; Masanobu Aizawa
- Web page: https://patentgrep.com/patent/US20140190146A1

## CPC

- F02C 3/22: the fuel or oxidant being gaseous at standard temperature and pressure (F02C3/28 takes precedence)
- B01D 53/22: by diffusion (manufacturing semi-permeable membranes B01D67/00; form, structure or properties of semi-permeable membranes B01D69/00; material for semi-permeable membranes B01D71/00)
- B01D 53/228: {characterised by specific membranes}
- B01D 69/147: {containing embedded adsorbents}
- B01D 71/0281: {Zeolites}
- C01B 3/12: by reaction of water vapour with carbon monoxide
- C10J 3/00: Production of combustible gases containing carbon monoxide from solid carbonaceous fuels (destructive distillation processes C10B)
- C10J 3/82: Gas withdrawal means
- F02C 3/28: using a separate gas producer for gasifying the fuel before combustion
- F02C 7/22: Fuel supply systems
- C01B 2203/042: Purification by adsorption on solids
- C01B 2203/0475: the impurity being carbon dioxide
- C01B 2203/84: Energy production
- C10J 2300/1618: Modification of synthesis gas composition, e.g. to meet some criteria
- C10J 2300/1653: integrated in a gasification combined cycle [IGCC]
- C10K 1/005: {Carbon dioxide}
- C10K 3/04: reducing the carbon monoxide content {, e.g. water-gas shift [WGS]}
- F05D 2220/722: as part of an integrated gasification combined cycle
- Y02C 20/40: of CO2
- Y02E 20/16: Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E 20/18: Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
- Y02P 20/151: Reduction of greenhouse gas [GHG] emissions, e.g. CO2
- F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00)
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- C10J: PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES (synthesis gas from liquid or gaseous hydrocarbons C01B; underground gasification of minerals E21B43/295); CARBURETTING AIR OR OTHER GASES
- C10K: PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- Y02C: CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

The carbon dioxide membrane separation system in a coal gasification process contains introduction of a mixed gas of hydrogen (H2) and carbon dioxide (CO2) in a high temperature and high pressure condition generated through water gas shift reaction from a water gas shift reaction furnace, while maintaining the temperature and pressure condition, to a zeolite membrane module containing a zeolite membrane for removing carbon dioxide, thereby removing carbon dioxide and generating a fuel gas rich in hydrogen. The fuel gas rich in hydrogen in a high temperature and high pressure condition discharged from the zeolite membrane module is fed to a gas turbine of the power generation facility while maintaining the temperature and pressure condition.

## Claims

### Claim 1

A carbon dioxide membrane separation system in a coal gasification process, comprising introduction of a mixed gas of hydrogen (H2) and carbon dioxide (CO2) in a high temperature and high pressure condition generated through water gas shift reaction from a water gas shift reaction furnace, while maintaining the temperature and pressure condition, to a zeolite membrane module containing a zeolite membrane for removing carbon dioxide, thereby removing carbon dioxide and generating a fuel gas rich in hydrogen.

### Claim 2 (depends on 1)

An integrated coal gasification combined cycle power generation facility comprising the carbon dioxide membrane separation system in a coal gasification process according to claim 1, wherein the fuel gas rich in hydrogen in a high temperature and high pressure condition discharged from the zeolite membrane module is fed to a gas turbine of the power generation facility while maintaining the temperature and pressure condition.

### Claim 3 (depends on 1)

A carbon dioxide membrane separation system in a fuel gas production process, comprising plural fuel gas generation and carbon dioxide separation units connected continuously, each of which contains the water gas shift reaction furnace and the zeolite membrane module containing a zeolite membrane for removing carbon dioxide according to claim 1, by which an unreacted raw material gas contained in the fuel gas rich in hydrogen generated in the respective units is reacted in the water gas shift reaction furnace in the next unit, and carbon dioxide formed in the units is recovered.

### Claim 4 (depends on 3)

An integrated coal gasification combined cycle power generation facility comprising the carbon dioxide membrane separation system in a coal gasification process according to claim 3, wherein the fuel gas rich in hydrogen in a high temperature and high pressure condition discharged from the zeolite membrane module of the fuel gas generation and carbon dioxide separation unit of the final step is fed to a gas turbine of the power generation facility while maintaining the temperature and pressure condition.