What is the current status of China’s independent coal gasification technology?
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Most of the coal gasification technologies adopted in China in recent years are foreign technologies; not only are large amounts of patent fees and royalties paid to those countries, but it is also difficult to fully grasp the core aspects of these technologies. Without its own coal gasification technology, China’s coal gasification sector remains under the control of other countries. Experts are asked to shed light on the current status of coal gasification research in China’s relevant research institutions.
The aerospace furnace of Yongmei Longyu was successfully tested
At present, among the fluidized-bed coal gasification furnaces in China that possess independent intellectual property rights, only the HT-L aerospace coal gasification furnace operates stably; its operation rate exceeded 92% in 2010, and its stability, continuity, and safety all rank among the best in the world.
I’m not an expert, but I know a bit about gasification. The multi-material slurry gasification technology developed by the Northwest Institute of Chemical Engineering is owned independently; some claim it is a copy of Texaco’s gasifier technology, but this is not the case. For further explanations, please visit the website: http://blog.sina.com.cn/s/blog_6162bd9f0100o1vj.html. Moreover, the development direction for gasification technologies at this institute is clear: three main areas – multi-material slurry gasification technology, solid slag discharge technology, and dry powder gasification technology. I highly recommend it, at least for domestically developed technologies. The four-nozzle gasification technology also possesses domestic independent intellectual property rights, but it is a variant of the Texaco technology; theoretically, it makes no sense. It has been able to develop to its current stage and be industrialized only because of the support of many university experts, yet it has numerous drawbacks. The only option is to consult experts in this field. It is said that the two-stage gasification technology developed by Xi’an Thermal Power Institute has been industrialized in coal-fired power plants, but there is little relevant literature available; most of what exists is theoretical, with few reports on practical applications in industrial settings.
Since those upstairs are not experts, they shouldn’t draw conclusions blindly. The Northwest Chemical Engineering Institute has its own technology for preparing multi-component slurries, but it is unclear as to its capabilities in terms of gasifiers. So many sets of multi-nozzle systems have been deployed, and they are even exported to the United States without any patent infringement lawsuits arising; I don’t understand why the person above says it’s theoretically unsound. The furnaces produced by Xi’an Thermal Power Institute are currently in use at Huaneng’s IGCC plant, and have also been exported to the United States.
Reply to 1# Hua He Tian Ze (1): The dry coal powder pressurized two-stage gasification technology developed by Xi’an Thermal Power Research Institute is primarily used in IGCC power generation; the technology is fairly mature, but further improvements are needed； (2) East China University of Science and Technology’s multi-nozzle opposed water-coal slurry gasification technology; (3) Northwest Research Institute of Chemical Industry’s multi-component slurry gasification technology; (4) Shanxi Coal Chemistry Research Institute’s ash fusion fluidized bed pulverized coal gasification technology. At present, (2) and (3) for use in the chemical industry are said to be quite good, but IGCC technology is still developing very slowly.
I work at CNPC Chemical Industry. The HT-L furnace has been in operation continuously for over 130 days now, and it continues to run stably. I am eager to create a benchmark for Chinese gasification technology!