Current Status and Future Development of Gasification, IGCC, and Polygeneration Technologies in China

摘要

China is the world’s second largest producer of electricity after the United States. Over70% of the total electricity in China is from coal-fired power plants. The large and inefficientuse of coal causes severe environmental pollution, which has raised a serious concern aboutits environment for living as well as its continuous economic growth. Thus, developing cleanand highly-efficient power generation technologies has become one of high-priorities tasksfor the Chinese government in the recent years. Integrated Gasification Combined Cycle(IGCC) and poly-generation technologies provide significant environmental benefits throughlower particle, pollutant emission. In addition, the capability of gasification and IGCCsystems enable poly-generation of hydrogen, hydrocarbons, chemicals, power, and steam,with provision for cost effective pre-combustion CO_2 removal.Because of increasing effort made in developing new power generation technologies,China has made many breakthroughs in IGCC and poly-generation key technologies such asgasification, Fisher-Tropsch (F-T) synthesis and methanol production plant designlately. Engineers in China have also gained much experience in design, construction andoperation of these plants. In addition, China is manufacturing an increasing number of highquality equipment, which has substantially reduced the cost for plant construction andoperation due to low cost, highly skilled of labor force in China. All of these progresses havecreated a more favorable situation for broad application of IGCC and poly-generation inChina and abroad.In this paper, we first survey the current status of poly-generation demonstration plants inChina. Then we discuss the development of IGCC and poly-generation technologies in Chinausing two examples. Example one uses the Opposed Multi-Burner Coal Water Slurry(OMB CWS) Gasification Technology that was developed by Institute of Clean CoalTechnology (ICCT) at East China University of Science and Technology. This plant utilizesGE6B gas turbine that was made in China for power generation and also has a capacity ofproducing 240,000 ton methanol annually. Example two also employs the OMB CWSGasification Technology. The gas generated from a gasifier using OMB CWS technologywill be used in gas turbine. At present, the liquid-phase hydrocarbon co-production process inthis plant is in the final stage of development, expecting to enter commercial operation in2010. Finally, we demonstrate the advanced engineering systems used at Shangdong Luneng