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In late February 2025, the oil circulation of the last refrigeration compressor in the ammonia synthesis unit of Guizhou Qixin Industrial Co., Ltd.’s coal deep processing and comprehensive utilization project was successfully completed, marking the successful finishing of the installation work for the key equipment in this unit. Through persistent efforts by all those involved in the project, a total of 240 units for the ammonia synthesis plant were successfully installed, the installation of 6,000 tons of steel structures was completed successfully, and the welding work on the process pipelines at 27.7 Wanda was also brought to a successful conclusion. Meanwhile, 780 of the 792 pressure testing packages have completed their testing processes, achieving a completion rate of 98%. The circulation of the refrigeration compressor oil was completed successfully this time, creating favorable conditions for the subsequent commissioning of the ammonia synthesis plant. Phase 1 of the project will enable the production of 1.2 million tons per year of coke, 200,000 tons per year of synthetic ammonia, 62,000 tons per year of coal tar, and 20,000 tons per year of crude benzene, among other chemical products. The project is located in the Qingkeng Industrial Zone of Weng’an County, Qiannan Prefecture, Guizhou Province, and is a key project in Guizhou Province. The project aims to conserve resources, extend the industrial chain, increase added value, and raise the comprehensive utilization rate of resources, in order to create a green, environmentally friendly, clean, energy-efficient, technologically advanced, and highly efficient integrated production base. Upon completion, the project will play a significant role in promoting the optimization and upgrading of Guizhou Province’s coal industry, improving the efficiency of coal resource utilization, and ensuring the sustainable development of this industry. The Zhejiang branch undertook the construction of areas such as the project-based production facilities, auxiliary systems and external pipelines, as well as the ammonia synthesis plant, with a total construction period of 300 days. Guizhou Qixin’s 1.2 million-ton coking project includes coal preparation, coking, chemical recovery, power generation, washing and sorting, as well as chemical processing units. It produces 1.2 million tons of coke per year, 65,000 tons of tar per year, 20,000 tons of crude benzene per year, 18,000 tons of ammonium sulfate per year, 580 million cubic meters of coke oven gas per year, 12 million tons of washed raw coal per year, and 240 million kilowatt-hours of electricity per year. Synthetic ammonia of 200,000 tons per year is produced using coke oven gas, while LNG amounts to 5,000 tons per year. Total project investment: 2,030,349,200 yuan. Introduction to the production of ammonia from coke oven gas in Guizhou Qixin Coking Project: According to the environmental impact assessment documents for Guizhou Qixin Industry Company’s coking project, as published by the Guizhou Department of Ecology and Environment in February 2022, the capacity for producing ammonia from coke oven gas is 200,000 tons per year. The production of synthetic ammonia from coke oven gas involves processes such as atmospheric pressure adsorption, compression of coke oven gas, pretreatment, precise desulfurization, conversion, decarburization, and ammonia synthesis. Among them, for precise desulfurization, a medium-temperature desulfurization process using iron-molybdenum hydrogenation is adopted, followed by iron-chromium hydrogenation and a zinc oxide treatment process. The pure oxygen pressurized catalytic partial oxidation process is used for the conversion of methane and polycyclic hydrocarbons. Pressure swing adsorption for carbon dioxide removal. 13MPa synthetic ammonia.