Preparing the Ground for the Implementation of a Large-Scale CCS Demonstration in China based on an IGCC-CCS Thermal Power Plant: the China-EU COACH Project

摘要

The 3-year EU funded COACH project completed in november 2009 gathered 20 partners comprising 8 Chinese partners and 12 European partners. Its objective was to establish the basis for the large-scale use of coal for polygeneration in China (Bohai Basin and Shandong Province) with pre-combustion capture on a future Integrated Gasification Combined Cycle (IGCC) thermal power plant, transport and geological storage of CO2 in either mature hydrocarbon reservoirs, deep saline formations or unmineable coal seams. The paper will present the main results of the project: - Knowledge sharing: workshops were organised in EU and China, a cooperative website was created and two CCS schools were organised in China; - Capture: A generic IGCC concept implemented with CO2 capture and including provision for production of electricity and methanol was defined, analysed, and compared against a plain IGCC based on the Chinese GreenGen Phase I system without CO2 capture. - Storage: Storage capacity of potential sites (Dagang and Shengli oil provinces, deep saline aquifers nearby and the Kailuan coal mining area) was assessed as well as a mapping of the possible transport infrastructure (pipelines or ships); deep saline aquifers were found to provide the main storage capacity but would require further geological investigation. Storage potential of oil fields was found much smaller but could provide opportunities for enhanced oil recovery. Finally, the Kailuan mining area exhibits a high ability to adsorb CO2 and provide enhanced coalbed methane recovery, but injectivity remains to be verified. - Recommendations: Two scenarios (one small scale - from 0.1 to 1 million tonnes of CO2 per year, one large scale - 2 to 3 million tonnes of CO2 per year) were designed to screen options for a possible CCS demonstration project.