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A seminar on the transformation and upgrading of the coal chemical industry in Jincheng City concluded that slag gasification will be the preferred method for upgrading fixed-bed reactors. Author/Source: Sinochem News Network; Date: December 31, 2019; Clicks: 83. On December 25, the Environmental Protection Bureau of Jincheng City, Shanxi Province, organized a seminar on the transformation and upgrading of the coal chemical industry in that city at Shanxi Lanhuadanfeng Chemical Co., Ltd. The focus of the seminar was on discussing the upgrades required for the gas generation systems used by local coal chemical enterprises. As arranged by the city’s environmental protection authorities, Wang Baojin, the chief engineer of Lanhuadanfeng Chemical, presented the company’s plan for upgrading its gas generation systems. Chu Zhuofu, the inventor of the GAG technology and from Jiangxi Changyu Industrial Co., Ltd., explained the advantages of GAG slag gasification, including its ability to produce liquid slag, as well as the technical, safety, and environmental aspects related to this technology, as well as the operation of the industrial facilities using it. Wang Baojin explained that, after conducting various investigations and comparing the existing gasification technologies in China, Danfeng Chemical plans to upgrade its original fixed-bed batch gasification process to a GAG slag gasification process, so as to help the company achieve both environmental protection and emission reduction goals. Wang Baojin said that the project involves constructing a GAG slag gasification furnace unit with a production capacity of 45,000 Nm3/h of water gas, based on the existing gas generation furnace framework. Since the new project does not have blowers, no pollutants such as dust, SO2, NOx, CO, or NH3 are generated. In the new process, the water used in the gas generation cycle does not come into direct contact with gas, eliminating sources of uncontrolled emissions; as a result, no pollutants such as VOCs or NH3 are produced either. The GAG slag gasification furnace used in this new setup is designed to meet pressure vessel standards, and the number of moving seal points is reduced by over 95% compared to fixed-bed batch gasification furnaces. There are no unpleasant odors at the site, and virtually no pollutants such as CO or H2S are released into the atmosphere. Additionally, due to the high gasification temperature of over 1600°C in the GAG slag gasification furnace, the fixed carbon burns completely, and the molten slag contains no pollutants. The water used for cooling the slag is fresh water, and no pollutants such as ammonia, phenols, or cyanides are generated in it. Wang Baojin said that once the project renovation is completed, the company’s pollutant emissions will **decrease**, and it will fully meet the requirements for clean production. Wastewater is recycled and not discharged; the glassy slag produced by the gasification furnace and the dust collected by the dust collectors can reduce the amount of waste by 3,280 tons per year. Once collected together, these materials can be used as building materials in place of sand, thus turning waste into a resource. The dust collected by the cyclone dust collectors amounts to about 1,000 tons per year, while that collected by the self-cleaning dust collectors amounts to about 2,500 tons per year; this dust is used as fuel in boilers. As a result, the amount of fly ash can be reduced by 4,924 tons. Once the project is completed, all solid wastes will be properly disposed of, causing no impact on the surrounding environment. All equipment is located in a enclosed workshop, and through sound insulation and noise reduction measures, the sound level can be kept at 60–70 dB(A). Preliminary calculations show significant economic benefits: after the renovation, production costs can be reduced by 26.37 million yuan per year, the cost per ton of methanol can be lowered by 200 yuan per ton, the break-even point for methanol can be brought down to 2,100 yuan per ton, and the break-even point for dimethyl ether can be reduced to 3,050 yuan per ton. Chu Zhuofu explained that slag gasification is a new type of efficient slag gasification technology using liquid slag discharge, developed by Changyu Company over a period of 3 years through more than 100 repeated experiments. It integrates advantages such as the high thermal efficiency of fixed-bed gasification (due to the counter-current contact between the high-temperature gas produced at the bottom of the gasifier and the raw coal fed in from the top of the furnace, the temperature at the outlet of the gasifier remains low, allowing the heat generated by the reaction to be fully utilized; this is also one of the reasons for low oxygen consumption), lower investment costs, and the high gasization temperature of fluidized-bed gasification, along with the use of liquid slag discharge. By combining these elements organically, this technology possesses even more distinct features and advantages. It can be widely applied in various fields such as coal chemistry, coking, petrochemicals, building materials, metallurgy, and papermaking, providing raw material gas and fuel gas for these industries; it is particularly suitable for the upgrading of ammonia and methanol production systems. The advantages of this slag gasification technology include a wide range of suitable raw materials, a high content of useful gases, safe and stable operation, low production costs, environmental friendliness, full compliance with **industrial policies and environmental protection requirements, minimal need for system modifications, low investment costs, significant economic benefits, and the possibility of gradual replacement without shutting down the system. At the meeting, Chu Zhuofo focused on presenting the actual production performance of the first set of Φ2.8m industrialized equipment currently under construction in Guizhou. This equipment was successfully commissioned in June this year and underwent a 154-hour test of continuous stable operation; all parameters met the design requirements, with an effective gas (CO+H2) content of >92% and a CO2 level of 98%. The system requires water replenishment, there is no wastewater discharge, and there is residual carbon in the ash