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World’s largest coal gasification unit – a unit capable of processing 3,500 tons of coal per day – has entered the phase of actual installation. Author/Source: Ministry of Industry and Information Technology of the People’s Republic of China. Date: June 22, 2020. Clicks: 84. On May 26, 2020, a ceremony was held at the super-large coal gasification project demonstration site of Shandong Runyin Biochemical Co., Ltd. to lift the coal gasification unit developed by Aerospace Changzheng Chemical Engineering Co., Ltd. (hereinafter referred to as “Aerospace Engineering”), which is capable of processing 3,500 tons of coal per day; this marked the beginning of the actual installation of the world’s largest coal gasification unit to date. This gasification furnace was developed over two and a half years by aerospace engineers; it is 44 meters long, 4.4 meters in diameter, and weighs around 800 tons. During the development process, several key innovations were achieved: first, the plant is capable of processing 3,500 tons of coal per day, generating 240,000 standard cubic meters of syngas per hour; this translates to an annual production capacity of 800,000 tons of ammonia. Compared to existing pulverized coal gasification units that achieve similar production levels, this system allows for a 20% reduction in initial investment, offering the advantages of higher output and lower upfront costs ； Secondly, a semi-waste boiler + water quenching technology was developed, which enables the production of high-quality steam as a by-product; this increases the thermal efficiency of the gasification unit from 83% to 88%, with annual waste heat recovery equivalent to 80,000 tons of standard coal ； Thirdly, the in-furnace reaction and flow field control were optimized, effectively ensuring good gasification performance; the carbon conversion rate exceeded 99%, and the contents of carbon monoxide and hydrogen in the generated gas were over 90% ； Fourth, the process flows such as syngas dust removal and slag-water flash evaporation were optimized, resulting in a 20% reduction in both the amount of wastewater and waste gas generated by the plant. To date, Aerospace Engineering has filed 102 invention patents, 143 utility model patents, and 42 foreign patents for pressurized coal gasification technology. In accordance with the construction schedule, the 3,500-ton coal gasifier is scheduled to come online at the beginning of 2021. Once operational, it will further promote the clean and efficient use of coal in China, providing essential equipment support for the adjustment of the country’s energy structure and for ensuring energy security.