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Environmental Impact Assessment Report for the Project of Comprehensive Utilization of Slurry Coal by Xinjiang Qinghua Energy Group Co., Ltd. – Author/Source: Gasification World; Date: 2023-08-04; Clicks: 35. Recently, in accordance with the relevant regulations regarding the approval process for environmental impact assessments of construction projects, the Department of Ecology and Environment of the Xinjiang Uygur Autonomous Region accepted the environmental impact assessment report for the project of comprehensive utilization of slurry coal by Xinjiang Qinghua Energy Group Co., Ltd. Construction location: Area B of Yidong Industrial Park, Yining County, Ili Kazakh Autonomous Prefecture, Xinjiang Uygur Autonomous Region; there is currently available vacant land at Xinjiang Qinghua Industrial Park. Total investment: 302.22 million yuan, of which 5.8 million yuan is allocated to environmental protection efforts. Nature of construction: technical renovation. Construction scale and contents: The project uses high-pressure fluidized bed gasification technology to produce raw coal gas. The main production units include coal preparation, gasification, and slag discharge facilities. The total designed capacity is 3.6 million m3/day (nominal capacity). Once completed, the project will replace the existing 3 Lurgi gasifiers at Qinghua Company. After the project is put into operation, the gasification section will no longer generate difficult-to-treat phenol-containing wastewater. Meanwhile, the amount of waste gas, wastewater, and solid waste generated and emitted by each unit in the technical upgrade project is lower than that of the existing Ruqi gasifiers; as a result, the overall energy consumption decreases, which has a positive impact on improving the regional environmental quality. This project uses high-pressure fluidized-bed gasification technology to produce raw coal gas, with the main production units including coal preparation, gasification, and slag discharge systems. This project uses high-pressure fluidized-bed gasification technology to produce raw gas, with a total designed capacity of 4.5 million Nm3/d (nominal capacity). The raw coal used is the slime coal from the Piliqing Coal Mine, as well as the slime coal produced by the first-phase coal-to-gas plant in Qinghua, Xinjiang. In April 2023, the first public information disclosure was made regarding the environmental impact assessment of Xinjiang Qinghua Energy Group Company’s coal dust comprehensive utilization project. It is reported that the Xinjiang Qinghua project, with an annual production capacity of 5.5 billion cubic meters of coal-based gas, was the first coal deep-processing demonstration project approved by the National Development and Reform Commission during the 12th Five-Year Plan period. Phase 1 of the project was launched in April 2009, with formal design work beginning at that time, and construction started in May 2010. In August 2013, all preparations for the test runs were completed. On December 27, 2013, the finished natural gas was officially integrated into the West-to-East Gas Pipeline Project Phase II network. The pilot project with an annual production capacity of 1.375 billion m3 of coal-to-natural gas has, since its commissioning and up to June 25, 2023, produced a total of 8.8835 billion m3 of coal-to-natural gas. The Phase I project of Xinjiang Qinghua produces natural gas using coal pulverization pressure gasification (16 Ruichi gasifiers, 14 in operation and 2 as backups), sulfur- and oil-resistant shift reaction, low-temperature methanol washing, and Topsoe methanation technology from Denmark. Schematic diagram of the process flow for Phase 1: This project involves the construction of the first “Qinghua Furnace” by Xinjiang Qinghua Energy Group. It utilizes 4.0 MPa pressurized fluidized bed gasification technology; one such furnace can replace three conventional coal pulverization pressurized gasification furnaces. Without any increase in energy consumption or waste emissions, it features low overall energy consumption and reduced wastewater generation. Moreover, it can be seamlessly integrated with Xinjiang Qinghua Energy Group Co., Ltd.’s Phase 1 coal-to-gas project, enabling balanced use of raw coal and coal slurry, thereby effectively reducing the company’s energy consumption and increasing its profitability. By utilizing coking coal to produce clean energy, the transformation of the local energy economy toward cleaner forms is accelerated.