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Ceremony for signing the EPC general contract for Shaanxi Yanchang Petroleum Yushen Energy Chemical’s 500,000 tons/year coal-based ethanol project held Author/Source: Coal Chemical Industry 114 Forum Date: June 3, 2020 Clicks: 5 On June 2, the ceremony for signing the EPC general contract for Shaanxi Yanchang Petroleum Yushen Energy Chemical Co., Ltd.’s 500,000 tons/year coal-based ethanol project was held in Xi’an. Beijing Petrochemical Engineering Co., Ltd. (hereinafter referred to as “Beiyou Engineering”) is responsible for the process units and associated utility systems, with a total winning bid amount of 3.78 billion yuan. The 500,000-ton/year coal-based ethanol project of Shaanxi Yanchang Petroleum Yushen Energy Chemical Co., Ltd. has a total investment of 6.98 billion yuan. It is located in the Qingshui Industrial Park of the Yushen Industrial Zone, which is known as a \"world-class coal and salt chemical industry base.\" The project covers an area of 1,365 mu and utilizes a technology for producing ethanol via dimethyl ether carbonylation, which was developed jointly by Yanchang Petroleum and the Dalian Institute of Chemical Physics and holds independent intellectual property rights. This technology enables the production of 500,000 tons of ethanol per year. The facility includes a methanol production complex (comprising units such as coal unloading and storage systems, gasification units, shift conversion units, purification units, gas separation units, methanol production units, and sulfur treatment units), an ethanol production unit (with units for dimethyl ether processing, carbonylation, hydrogenation, separation, compression, heating furnaces, and refrigeration stations), as well as new construction for utility and auxiliary facilities. The design capacity is to process 1.22 million tons of coal per year. The project aims to be completed by the end of 2021. The Yushen Nenghua 500,000 tons/year coal-based ethanol project is an expanded version of the world’s first industrial project for producing ethanol from syngas on a scale of 100,000 tons per year. This project uses the Xigwan open-pit coal mine as its raw material, and employs the HT-L gasification technology to produce crude gas. One stream of this crude gas undergoes conversion, while another stream is used for waste heat recovery. Both streams are then subjected to low-temperature methanol washing to remove sulfur and carbon dioxide from them. The crude gas that has not undergone conversion is purified and separated into H2 and CO through deep cooling. Part of the gas that has undergone conversion is sent to a PSA unit for hydrogen production, while another part is used in a methanol synthesis unit to produce methanol; CO, H2, and methanol are then sent to an ethanol production facility.