Tianjin Green Coal Power Co., Ltd. 250 MW Level Integrated Gasification Combined Cycle Power (IGCC) Industrial Demonstration Project The gasifier was successfully ignited and produced qualified gas. This indicates that the two-stage dry pulverized coal gasification technology developed by China Huaneng Group Clean Energy Technology Research Institute Co., Ltd. has been successfully fed once, and industrialization has taken a crucial step.
"This is China's first IGCC project and the first industrial application of the two-stage dry pulverized coal gasification technology." Xu Yue, director of the company's green coal and electricity technology department, told reporters that the gasifier is stable after ignition, and the first and second All the sections were put into operation, and the effective gas components (carbon monoxide and hydrogen) in the gas reached 84%, and the technical indicators were normal. At present, the purging system is being tested and the syngas produced will be used for power generation.
Coal gasification is the leading and core technology in the IGCC, coal chemical and other fields. Among them, the dry coal powder pressure gasification technology represents the development direction of large-scale coal gasification technologies and has long been monopolized by foreign countries. High royalties and proprietary equipment costs, as well as the complex equipment commissioning and operation process, have brought a heavy burden on domestic enterprises. In view of the low efficiency of foreign technology, cold gas efficiency, large self-consumption of gasification islands, and high equipment cost, Huaneng Group's clean energy company innovatively proposed a two-stage dry gas pressure gasification technology.
This technology has independent intellectual property rights and fills the gap in domestic dry coal powder coal gasification technology. The two-stage dry pulverized coal gasifier adopts dry coal powder feeding at upper and lower sections. Anthracite, bituminous coal, lean coal, brown coal, and high sulfur coal are all suitable. The carbon conversion rate is over 99%, and the gas quality is good. It does not contain heavy hydrocarbons, and its methane content is extremely low. The effective gas in the gas accounts for more than 90%. It does not produce tar, phenol, and other condensed matter, and does not pollute the environment. In addition, the technology adopts a water-cooled wall structure, slag-resistant slag, no refractory brick lining, and long operating cycle. At the same time, by utilizing the two-stage coal gasification reaction, the gasification rate of coal is increased while the temperature of the high-temperature gas in the furnace is lowered, the scale of the gas cooler and the precipitator equipment is reduced by half, and the cost of coal gasification equipment is reduced by 40% compared with that of a foreign capacity equipment. 50%.
It is understood that the Tianjin Green Coal Power IGCC Industrial Demonstration Project was built by Huaneng Tianjin Coal Gasification Power Generation Co., Ltd. With a total investment of more than RMB 3 billion, construction started in 2009. At the end of last year, equipment for air separation, gasification, purification and combined cycle power generation was completed and completed. Step-by-step debugging. The two-stage dry pulverized coal gasifier used in this project has a daily processing capacity of 2,000 tons and an effective gas composition of 137,000 cubic meters per hour.
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