Shanxi Tianze Coal Chemical Industry held a meeting to advance the environmental upgrade project for fixed-bed coal gas production

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Shanxi Tianze Coal Chemical Industry held a meeting to advance the environmental upgrade project for fixed-bed coal gas production. Author/Source: Gasification World. Date: 2021-07-12. Clicks: 117. Since the beginning of this year, Shanxi Tianze Coal Chemical Industry Group Co., Ltd. has held several meetings to push forward this environmental upgrade project, coordinating and guiding all aspects of the project’s construction, thereby providing strong support for the implementation of the project to replace direct cooling with intercooling in the coal gasification plant. To date, the main equipment for the conversion of direct cooling to intercooling in the gasification plant has been hoisted into place, creating the conditions necessary for the installation of the outer tubes. The buried pipelines for the gas generation circulating water in the eastern plant area have been largely completed, and the installation of cooling tower equipment has begun. The wastewater reduction device has completed the preparation of test data and operation reports. Shanxi Tianze Gasification Plant uses fixed-bed gas generation to produce synthetic ammonia, urea, and methanol. Shanghai Jingye Technology is used to control UGI furnace pollution, with design work carried out by Zhengyuan Group’s design company. Project Overview: The project involves the construction of 20 new DN3600 continuous low-pressure pure oxygen gas generation furnaces, with each furnace capable of producing approximately 15,000 Nm3/h of gas ； Supporting facilities such as air separation, high-efficiency dry ash removal, indirect gas cooling processes, and closed-loop VOCS treatment for slag water are to be installed, in order to replace the 40 existing atmospheric-pressure fixed-bed batch gasification furnaces at Yongfeng Company and the chemical plant, and to eliminate the semi-water gas holders ； Annual production of raw materials for synthetic ammonia: 1.84 billion Nm3 of water gas, and 520 million Nm3 of nitrogen, supplied to Yongfeng Company and chemical plants. It is planned to carry out gasification and safety, environmental protection upgrades for the existing major issues at Yongfeng Company and the chemical plant in Bagong Park ； It mainly includes the renovation of purification and compression systems, the balancing of the steam system, upgrades to achieve ultra-low emissions from boiler flue gas, improvements to wastewater treatment standards (salt content ≤ 1600 mg/L), and the relocation of the 110 KV substation. Tianze Group was originally established as Jincheng City’s Second Fertilizer Factory in 1978, with an initial production capacity of 3,000 tons of synthetic gas and 12,000 tons of ammonium bicarbonate per year. Through corporate restructuring, mergers and acquisitions, as well as new construction and expansions, it has now developed into a joint-stock enterprise with a comprehensive production capacity of 1.8 million tons of synthetic ammonia, 3 million tons of urea, 300,000 tons of methanol, 60,000 tons of formaldehyde, 15,000 tons of melamine, and a waste heat power generation capacity of over 18 MW. Its total assets amount to 4.67 billion yuan, and it employs more than 3,800 people. At present, the company is the largest producer of large-grain urea in the country and the largest urea producer in Shanxi Province.