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Reference Number DTI/CC/414
Title Advantages of HP IGCC with/without CO2 Removal
Status Completed
Energy Categories FOSSIL FUELS: OIL, GAS and COAL(Coal, Coal conversion (excluding IGCC)) 40%;
FOSSIL FUELS: OIL, GAS and COAL(CO2 Capture and Storage, CO2 capture/separation) 40%;
OTHER POWER and STORAGE TECHNOLOGIES(Electric power conversion) 20%;
Research Types Applied Research and Development 100%
Science and Technology Fields ENGINEERING AND TECHNOLOGY 100%
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Mr JAG Brown
No email address given
Progressive Energy Ltd
Award Type 3
Funding Source DTI
Start Date 01 January 2005
End Date 01 October 2006
Duration 21 months
Total Grant Value £421,388
Industrial Sectors
Region South West
Programme
 
Investigators Principal Investigator Mr JAG Brown , Progressive Energy Ltd (99.997%)
  Other Investigator Project Contact , Shaw Stone & Webster Nuclear Services, USA (0.001%)
Project Contact , Future Energy Gmbh, Austria (0.001%)
Project Contact , University of Nottingham (0.001%)
Web Site
Objectives

To investigate the impact on performance and cost of coal based gasification plant of the installation and operation of CO2 capture equipment at high pressure.

  • Establishing three design cases. A medium pressure CO2-in Base Case, a medium pressure CO2-removed case and a high pressure CO2-removed case.
  • Outline the advantages and risks of high pressure IGCC operation compared to medium pressure.
  • Carry out an assessment to identify areas in which improvements to equipment are desirable and, if possible, propose solutions. Address expected problem areas namely the operation of lockhoppers at high pressure.
  • Develop a device giving improved accuracy in the measurement of dense phase coal flow.
Abstract

Removal of CO2 from fossil fuels used in electricity generation is most easily facilitated pre-combustion, and for coal this would imply using Integrated Gasification Combined Cycle (IGCC) technology. The pressure at which IGCC plants operate has, until now, usually been chosen to provide syngas at the right conditions for the gas turbine. Efficiency of these processes is slightly higher than for an equivalent conventional coal-fired power station, and emissions of SOX, NOx, particulates, and mercury are significantly better. CO2 extraction is also possible at these medium pressures (MP) using existing commercially proven equipment. There is, however, some scope to further improve the efficiency of coalfed medium pressure IGCC with or without CO2 removal: for example using dry- instead of slurryfeeds. The potential return on these could be high in both economic and environmental terms.A financial model will therefore be developed for the medium pressure, CO2 not removed base case incorporating the best of the above and the effect of removing the CO2 will be examined. This will provide a basis upon which the advantages of dry-feed high pressure quench gasification can be measured.

There are theoretically a number of advantages in increasing the gasification pressure as high as possible, the limit being the ability of air separation units to supply oxygen. These include the easierremoval of CO2 suitable for export from the site for long-term storage or use in Enhanced Oil Recovery (EOR). The confidence with which higher gasification pressures can be used is influenced by the extent to which exisiting equipment is required to operate beyond the envelope of current experience. An appraisal is need to establish whether the benefits of HP operation are sufficient to outweigh these costs. The work will therefore also include the results of a high pressure, CO2 removed financial model, and a clear statement of the techno-economic advantages of high pressure dry fed water quench gasification coupled with CO2 removal.

Publications DTI (2005) Advantages Of High Pressure IGCC - With/Without CO2 Capture: Project Profile 370. DTI Cleaner Coal Technology Programme, URN 05/964, DTI, UK (PDF 3270 KB)
Final Report (none)
Added to Database 01/01/07