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March 1986 America first launched “clean coal technology demonstration project”, the main (CCTP) contains four aspects: (1) advanced coal-fired power technology (integrated gasification combined cycle power - IGCC fluidbed burning, and improve combustion CFBC - and direct coal gas), (2) environmental protection equipment (control); and the SOx NOX (3) coal into a clean energy technology (washing, mild gasification, liquefaction), (4) industrial application (iron, cement and other industry control sulphur, nitrogen, dust and gas emissions recycling cleaning, etc.). Thirteen of commercialization achieved initial results. European countries are developing the project have gasification combined cycle power (IGCC), coal and biomass gasification (or combination and waste combustion), circulating fluidized bed combustion, solid fuel aerification and fuel cell technology, combined cycle. Japan in recent years is greatly increased began coal consumption, the development of clean coal technology. Developing projects include: (1) to improve the utilization efficiency of coal, such as technology, and PFBC CFBC IGCC, (2) desulfurization, nitrogen, such as advanced technology of coal preparation technology, oxygen burning technology, advanced processing technology, smoke waste of advanced production technology, coke, (3) coal conversion technologies, such as liquefied coal gasification, direct and fuel cell and coal gasification combined pyrolysis, etc, (4) ash utilization technology.

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