On December 18, a reporter learned from the Coal Gasification Engineering Research Center at the Shanxi Institute of Coal Chemistry, Chinese Academy of Sciences, that China's independently developed ash-convergence coal gasification technology successfully completed a 72-hour pressurized gasification test on a semi-industrial experimental device in Taiyuan. The results showed that the technology is now ready for industrial demonstration. This marks another significant milestone in China’s journey toward self-reliance in coal gasification technology.
Ash-convergence coal gasification, a novel technique developed in the early 1990s in China, has no global precedents. It offers strong adaptability to various coal types and lower capital investment. In 2001, an atmospheric pressure industrial-scale demonstration was successfully completed. To meet growing demands for large-scale applications, the Shanxi Provincial Development and Reform Commission approved the establishment of a coal gasification engineering research center in 2005 by Shanxi Jincheng Anthracite Mining Group and the Shanxi Institute of Coal Chemistry. With a total investment of 35 million yuan, the center built a semi-industrial pressurized ash-convergence platform by the end of 2006. It started operations on December 11, 2007, and conducted a 72-hour test, finishing on the afternoon of the 15th. Representatives from the Shanxi Provincial Development and Reform Commission, Economic Commission, Chemical Industry Office, Second Design Institute of Chemical Industry, and Sinopec Engineering Construction Co., Ltd. were present during the test, offering guidance and oversight.
The semi-industrial pressurized system operated under conditions similar to those of full-scale industrial equipment. The data collected will serve as a foundation for future industrial design. The platform was designed to operate at pressures between 1 and 3 MPa. In 2008, the team plans to conduct higher-pressure tests to further validate the technology.
At the site, Ma Xiaoyun, chief engineer at the Coal Gasification Engineering Research Center, shared insights about the test. He noted that the system ran stably for 76 hours, processing 60 tons of coal daily, with all key technical indicators meeting design specifications. The project also completed the pressure amplification design and verification of critical supporting equipment. Based on the test results, a 1 MPa industrial gasifier could process up to 500–600 tons of coal per day, compared to 100 tons under normal pressure. A single unit could support annual ammonia production of 100,000 to 122,000 tons. Additionally, the system reduces synthetic gas compression energy consumption by 50%, making it a viable solution for many small and medium-sized chemical fertilizer plants across China.
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