The main construction phase of the Shanxi Jinfeng Coal Chemical Gas Production Project, aimed at improving energy efficiency and environmental protection as well as carrying out related renovations, has been successfully completed

Basic information on the Gas Production Project for Energy Conservation, Environmental Protection Improvement and Related Renovation carried out by Shanxi Jinfeng Coal Chemical Co., Ltd.: Project name: Gas Production Project for Energy Conservation, Environmental Protection Improvement and Related Renovation. Constructor: Shanxi Jinfeng Coal Chemical Co., Ltd. Location of construction: Within the premises of Shanxi Jinfeng Coal Chemical Co., Ltd. Total land area: 34,365.27 square meters. Land use type: Industrial land. Total building area: 18,213.76 square meters, of which: Total above-ground building area: 18,213.76 square meters; Total below-ground building area: 0 square meters. Number of building floors: As indicated in the general layout plan. Building coefficient: 34.50%. Density ratio: 0.62

The Gas Production Energy-Saving and Environmental Protection Improvement and Associated Transformation Project of Shanxi Jinfeng Coal Chemical Co., Ltd. is located in Macun Industrial Park, Gaoping Economic and Technological Development Zone, Jincheng City. The total investment in this project amounts to 727,741,200 yuan. The construction work includes: building 12 new pure-oxygen continuous gasification furnaces (10 in operation and 2 as backups) to replace the existing 32 fixed-bed intermittent gasification furnaces; constructing a new air separation unit with a capacity of 30,000 m3/h; and upgrading the coal gas purification system as well as the zero-discharge wastewater treatment system across the entire plant. Additionally, 2 x 90 t/h circulating fluidized bed coal-fired boilers will be built, while the existing 4 x 35 t/h coal-fired boilers (3 in operation and 1 as backup) in the plant will be demolished. The existing semi-water gas tanks and waste heat recovery systems for gas production blow air will also be shut down and removed. After the project is implemented, the overall production capacity will remain at 360,000 tons of amino alcohol and 520,000 tons of urea per year. Shanxi Jinfeng Coal Chemical Co., Ltd. is a large-scale coal chemical enterprise under Shanxi Jinneng Holding Equipment Manufacturing Group Co., Ltd. The current production facilities consist of an ammonia synthesis unit and a urea production unit. The ammonia synthesis plant consists of four sections: raw gas preparation, raw gas purification, raw gas compression, and ammonia synthesis. For raw gas preparation, 32 fixed-bed, atmospheric-pressure, batch-type gasifiers with a diameter of 2650 mm are used. Raw gas purification involves wet desulfurization, sulfur-resistant full-low-temperature shift reaction, wet DSH desulfurization followed by dry activated carbon desulfurization for the shifted gas, NHD decarburization, and dimethyl refinement. Ammonia synthesis is carried out using a synthesis process at 31.4 MPa. The urea plant uses the CO2 stripping method to produce urea; the first phase is for producing small-particle urea, while the second phase is for producing large-particle urea. Crude methanol is purified into pure methanol through distillation. The current total annual production of ammonia alcohols by the enterprise is 360,000 tons.

Construction location: Macun Industrial Park, Gaoping Economic and Technological Development Zone, Jincheng City. Constructor: Shanxi Jinfeng Coal Chemical Co., Ltd. Project type: Technical transformation. Total investment: 727.7412 million yuan, of which 199.66 million yuan is allocated to environmental protection measures. Construction scope: 12 new pure oxygen continuous gasification furnaces (10 in operation and 2 as backups) will be installed to replace the existing 32 fixed-bed batch gasification furnaces; a new air separation unit with a capacity of 30,000 m3/h will be built. Additionally, the coal gas purification system and the zero-discharge wastewater treatment system for the entire plant will be upgraded； A new 2×90t/h circulating fluidized bed coal-fired boiler will be installed, while the existing 4×35t/h coal-fired boilers (3 in operation and 1 as backup) in the plant will be removed. The existing semi-water gas holders as well as the waste heat recovery systems for the gas generation blow air will also be shut down and removed. After the project is implemented, the overall production capacity will remain at 360,000 tons of amino alcohol and 520,000 tons of urea per year. Specifically, this includes: ① Installing 12 new φ3600mm micro-pressure pure oxygen continuous gasification units (10 in operation and 2 as backups) to replace the existing 32 φ2650mm batch gasification units ； ②A new air separation unit with a capacity of 30,000 Nm3/h will be installed, along with a circulating water system for air separation with a capacity of 3,000 m3/h ； ③Replace 1 high-pressure compressor in the compression section ； ④Add 2 pre-transforming furnaces, and install spray water pumps in the transformation section to bring the flow rate of each spray water pump to 30 m3/h ； ⑤Two atmospheric flash tanks were added to the secondary desulfurization section, along with 4 liquid-rich pumps; moreover, the components inside the desulfurization tower were replaced ； ⑥A newly built, fully enclosed raw coal storage yard will be constructed; one crusher and one vibrating screen will be installed in this yard for the processing of raw coal ； ⑦A new set of incremental water biological treatment equipment with a processing capacity of 110 m3/h will be installed to treat intercooling ammonia vaporization wastewater and shift condensate. This system utilizes a treatment process that includes an aeration regulation tank, air flotation, ozone pre-oxidation, hydrolysis acidification, two-stage AO treatment, MBR, ozone oxidation, nitrification filter, denitrification filter, and three-stage fluorine removal. Another new set of reclaimed water treatment equipment with a capacity of 180 m3/h will be built to operate in parallel with the existing 1503/h reclaimed water treatment system. Additionally, a new set of zero-discharge treatment equipment with a processing capacity of 120 m3/h will be installed. The effluent from the biological wastewater treatment system, as well as the purified water, will be sent to both the reclaimed water treatment system and the zero-discharge treatment equipment; after being processed through pre-concentration, salt separation, and evaporation crystallization (or freeze crystallization) processes, zero wastewater discharge will be achieved. ⑧Two new 90t/h coal-fired boilers will be installed to replace the existing 4×35t/h coal-fired boilers; the original 75 t/h coal-fired boiler will be used as a backup unit, while two 45t/h and 60t/h blast air waste heat boilers will be removed.

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