The world’s largest single-unit gasification ash incineration facility has operated stably for 288 days

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As of January 15, 2026, the world’s largest single-unit gasification ash incineration facility located in Shihezi, Xinjiang – the 490,000-ton/year fluidized bed gasification ash incineration plant – had been operating stably for 288 days, with a combustion efficiency of 99.45% for pure gasified ash. This project converts large amounts of difficult-to-dispose-of ash and slag into steam required for the production of enterprises within the park, truly turning waste into treasure. In 2023, Zhongke Hefei Gasification Company signed a contract with Xinjiang Tianye Huihe New Materials Co., Ltd. for the general contracting of the boiler section of a project aimed at the recycling of carbon-based solid waste and the utilization of waste heat and pressure, with a capacity of 490,000 tons per year. This project is designed to handle the large amount of gasification ash generated annually by the Jinhua furnace used in Xinjiang Tianye Huihe’s first-phase ethylene glycol production facility, which has a capacity of 600,000 tons per year. Construction of the project began in May 2023, the hydrostatic testing was completed in June 2024, and the incinerator started trial operation in January 2025. The operational results over the past year show that the 490,000 tons per year fluidized bed gasification ash and slag incineration facility exhibits strong stability, good reliability, and high combustion efficiency. The carbon content in the fly ash and bottom slag produced by the incinerator is no more than 0.4%, with a combustion efficiency of 99.45%; the ash and slag resulting from combustion can be directly utilized as resources. Today, the ash generated by the 4 gasification units in the park is all sent to incinerators for disposal. The heat produced is used to heat water and generate steam, which is supplied to other production units in the park. The remaining residues can be used as raw material for cement, for use by downstream enterprises. Xinjiang Tianye Huihe’s 600,000 tons per year ethylene glycol production facility utilizes Tsinghua furnace coal slurry gasification, shift reaction, methanol washing, and hydrogen/carbon monoxide separation technologies, as well as advanced chemical processes for the production of ethylene glycol; it generates 600,000 tons of ethylene glycol per year, while also producing 255,000 tons of methanol as a by-product at low pressure. For gasification, Tsinghua water-cooled wall coal slurry gasification is employed, with 4 gasifiers of 6.5 MPa and φ2800 in operation, each capable of handling 1500 t/d of coal.