[Ten years of major development in chemical technology] 149-2023 The industrial trial combustion of high-ash melting point coal in northern Shanxi was a complete success.

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Chemical technology has developed greatly in the past ten years, praising the prosperity of China in the prosperous world. It is more lively and more exciting with everyone's participation. Everyone is welcome to participate in the forum to exchange and discuss. July fires, pay attention to fire prevention ------------------------------------------------- On April 27, 2023, the "Research on the Application of Large-Scale Gasification Process of Coal in Northern Shanxi" Coal-water Slurry Furnace Industrial Trial Combustion Seminar was held at Fengxi Group in Yuncheng City, Shanxi Province. Relevant leading experts from China Coal Pingshuo Group Co., Ltd., Fengxi Group, Lu'an Chemical Machinery Group, Tsinghua University Shanxi Clean Energy Research Institute, and Beijing Qingchuang Jinhua Technology Co., Ltd. attended the meeting, marking the complete success of the industrial trial combustion of high ash content and high ash melting point coal in the coal-water slurry water-cooled wall gasification furnace (4# furnace) of Linyi Branch of Fengxi Group in northern Shanxi. In mid-March 2023, 6,000 tons of coal from northern Shanxi were transported to the No. 9 coal shed of Linyi Branch for separate storage. From mid-March to early April, laboratory testing and analysis will be carried out to determine the industrial trial burning plan. From mid-March to early April, furnace #4 completed the restoration of the flux addition system and the transformation of the coal-water slurry feeding system. An industrial trial burning was held on April 12 to open the trade union, and the industrial trial burning officially started at 16:00 on April 12. Since the trial burning started on April 12, a total of 8 stages, 7 working conditions, and 2 72-hour assessments of Shanxi coal trial burning have been completed. During the trial combustion period, the gasifier operated continuously and stably without interruption, with a cumulative operating time of 360 hours (15 days), of which 240 hours were achieved with 100% Shanbei coal. A total of 6,000 tons of Shanxi coal, 885 tons of Shenmu coal, and 147 tons of limestone have been trial-fired. The overall operation of the gasification furnace is stable, and the switching between different working conditions is smooth. Operating data such as coal slurry concentration and H2S content show changing trends consistent with the coal blending ratio. The concentration of 100% Shanbei coal slurry reaches 64% to 65%. The water-cooled wall steam output is below 2t/h, indicating that Jinhua furnace gasification and high ash melting point Shanbei coal are stable in slagging. Proved by this industrial trial burning: It is feasible for northern Shanxi coal to be gasified in a coal-water slurry water-cooled wall gasifier.