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Zhonghe Gasification’s circulating fluidized bed gasification project achieves 365 days of stable operation per furnace / Author/Source: Gasification World / Date: 2022-03-11 / Clicks: 17 As of 9:00 on March 10, 2022, the Xiamen Xiangsheng circulating fluidized bed oxygen-enriched gasification project, constructed by Zhongke Hefei Gasification Technology Co., Ltd. (hereinafter referred to as “Zhonghe Gasification”), has achieved 365 days of continuous and safe operation of a single furnace, thus setting a new record for the continuous operation of circulating fluidized bed gasifiers using lignite with a high moisture content. The project is located in Konawe Regency, Kendari City, South Sulawesi, Indonesia. It involves the construction of a gas station to support an integrated stainless steel smelting plant in the area, with an annual production capacity of 2.5 million tons; the industrial gas produced will be used as fuel for the rotary kilns in the nickel-iron production lines in the workshops. In view of the characteristics of local lignite, such as high moisture content (up to 40%), flammability, brittleness, and poor slurry-forming properties, Zhonghe Gasification employed oxygen-enriched circulating fluidized bed gasification technology to build 4 sets of pulverized coal gasifiers for the client, each with a capacity of 80,000 Nm3/h. This approach takes full advantage of the high reactivity and good grindability of local lignite; moreover, it can handle coal with high moisture content, allowing it to be fed into the gasifier without drying, thereby significantly reducing the energy consumption required for the further processing of lignite. Since its official commissioning in 2021, the project has been operating smoothly with excellent performance metrics. Previously, the owner used a coal injection process to supply heat to the rotary kiln, injecting coal powder directly into the furnace for combustion; the noise and dust generated during coal grinding and injection severely polluted the local environment and posed a threat to the health of the operators. Replacing coal powder with gas not only solved the pollution problem but also **freed up labor in the refinery, increased the level of automation there, and ensured the quality of the end products; the operational results were praised by the owners. The long-term stable operation of the Xiamen Xiangsheng project signifies a major success for circulating fluidized bed gasification technology in the industrial application of high-moisture lignite, further verifying its adaptability to different coal types. Previously, this technology has been tested in two projects, Guizhou Hongsheng and Xinjiang Yihua, to verify its applicability to anthracite and high-alkali coal. As the industrialization platform for the CAS Hongguang special project titled \"Industrialization of Circulating Fluidized Bed Gasification Technology,\" Zhonghe Gasification has successfully implemented the application of circulating fluidized bed gasification technology in industrial fields such as coal-to-syngas production and coal-to-clean-gas production. It has also established a number of high-quality demonstration projects that achieve favorable outcomes in terms of economic, social, and environmental benefits. Going forward, Zhonghe Gasification will continue to promote the application of circulating fluidized bed gasification technology in various fields, drive technological innovation in the industry, provide enterprises with clean energy solutions, and achieve high-quality development in the coal gasification and environmental protection sectors.