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The JM-S units of the Luqi gasifiers at Henan Jinkong Tianqing Coal Chemical Co., Ltd. are ready for commissioning. Author/Source: Gasification World. Date: 2023-03-17. Clicks: 19. Henan Jinkong Tianqing Coal Chemical Co., Ltd. (referred to as “Jinkong Tianqing”) originally had 6 Luqi gasifiers, with 5 in operation and 1 as a backup. In November 2020, Henan Jinmei Tianqing added another JM-S furnace, which became Furnace No. 7. Boiler No. 7 reached the required standards and full production capacity after just 10 days of trial operation. To further promote the JM-S technology, Jinmei Tianqing plans to carry out optimized upgrades of the 1# gasification furnace using this technology, by adding equipment such as medium-pressure waste boilers, cyclone separators, and steam drums. According to a report from Henan Petroleum and Chemical Industry in March 2023, the technical renovation of Gasifier No. 1 at Henan Jinkong Tianqing is now in the confirmation phase, and it is ready for trial operation. Upon completion of the project, it will be possible to reduce coal consumption, oxygen consumption, steam consumption, and the carbon content in ash and slag, while increasing the processing capacity of the gasifier and maximizing the rational use of energy. The Jincheng furnace (JM-S) is an optimized and upgraded version based on the gasification characteristics of anthracite in Lu Strange furnaces. Due to its high ash melting point, high resistance to crushing, good thermal stability, and low volatile content, smokeless lump coal is an excellent raw material for Lurgi gasification. A higher temperature can be used during gasification, which improves the processing capacity of the gasifier and enhances gasification efficiency; however, this also leads to an increase in the temperature at the outlet of the gasifier. (1) The waste boiler process improves heat recovery efficiency. Based on the operating characteristics of Jincheng smokeless fast coal, the gas exiting the gasifier contains little dust and has a very low tar content (this has been verified on the gasifiers used by Tianqing Company). The washing cooler at the outlet of the original quenching process in the Lurgi furnace has been optimized; by adding a medium-pressure waste boiler, it is possible to generate high-quality steam for use by the gasification furnace, as well as improve energy efficiency. (2) Taking into account the characteristics of Lurgi gasification of bituminous coal, such as low wastewater volume and ease of treatment, the water treatment process was optimized, and the optimization of equipment reduced investment costs. Current coal pulverization pressurized gasification furnaces often use low-rank coal, which has a low ash melting point, high volatile matter content, and poor thermal stability. As a result, the temperature in such furnaces is low, the oxygen-to-coal ratio is high, the composition of the gas produced is complex, and it contains dust. This leads to a large amount of water in the gas, a complex composition of this water, and difficulties in processing it. Bituminous coal, with its high fixed carbon content, high ash melting point, low volatile matter content, and good thermal stability, can increase the temperature of the gasification furnace, reduce the steam-to-oxygen ratio, improve the steam decomposition rate, and decrease the amount of steam fed into the furnace as well as the amount of water used for gas washing. (3) This technology produces methane as a by-product, which can be applied to industries such as glass and building materials that have a demand for industrial gas. For environmental reasons, many places **require the building materials industry to switch to natural gas. However, due to issues such as unstable natural gas supply, high costs associated with flue gas denitrification, and difficulties in controlling furnace temperatures, the industry prefers to use coal-based fuel gas production methods, which are more mature in terms of technology and less costly.