On November 29th, the environmental impact assessment document of olefin, aromatics and deep processing project of 15 million t / a coal quality clean and efficient conversion demonstration project of Yulin Chemical Co., Ltd. of Shaanxi Coal Group was to be examined and publicized by the Ministry of Ecology and Environment.
The project includes main project, storage and transportation project, public works, environmental protection project and supporting project. The main project includes 38 sets of production units such as coal pyrolysis plant and pulverized coal gasification plant; the storage and transportation project includes 6 circular closed coal bunkers, 173 storage tanks and 77 sets of loading and unloading devices; public works include 6 supercritical boilers and 6 supercritical extraction units (as public heat source points in the park); environmental protection projects include 9 sets of waste gas / waste incineration units, 14 sets of wastewater pretreatment and 2 comprehensive sewage treatment plants, etc. The supporting projects include park water supply project, park slag yard, hazardous waste disposal project and so on.
The total investment of the project is 175.973 billion yuan, of which 11.909 billion yuan is invested in environmental protection, accounting for 6.77% of the project construction investment.
The main products of the project include polyolefin, polyester, degradable plastics, battery electrolyte and so on.
On October 18, the website of the Ministry of Ecology and Environment issued a public notice on the acceptance of environmental impact assessment documents for construction projects from October 7, 2023 to October 13, 2023. The projects accepted include the olefin, aromatics and deep processing project of 15 million tons / year coal quality clean and efficient conversion demonstration project of Shaanxi Coal Group Yulin Chemical Co., Ltd.
The main construction contents of the project are coal pyrolysis, gasification, methanol to olefin, diesel oil hydrogenation, aromatics deep processing, degradable plastics and battery electrolyte products. The main units include 13.5 million t / a coal pyrolysis (including hydropyrolysis) unit, 5.6 million t / a methanol plant, 1.48 million t / a methanol to olefin plant, 31500Nm3/h electrolytic water hydrogen plant, 1.9 million t / a diesel hydrogenation, 1.5 million t / a reforming aromatics combination, 700000 t / an aromatization, 2.2 million t / a refined terephthalic acid plant, 240,000t / a polyester plant, 260,000t / a polycarbonate, 300000 tons / year polypropylene (PP), 300000 tons / year polyethylene (FDPE), 400000 tons / year polyacetic acid-vinyl acetate (EVA), 50 tons / year polyolefin elastomers (POE), 1 million tons / year dimethyl carbonate (DMC), 220000 tons / year super absorbent resin, 300000 tons / year poly (butylene terephthalate) (PBAT), 67800 tons / year biodegradable biomaterials (PBS), 30 000 tons / year tetrahydrofuran homopolyether (PTMEG), 210000 tons / year ethylene carbonate (EC), 80 thousand tons / year poly (3-hydroxypropionic acid) (PPL), 330000 tons / year polyether polyol, 700000 tons / year propylene oxide, 150000 tons / year methyl ethyl carbonate (EMC) 600000 tons / year diethyl carbonate (DEC), 600000 tons / year poly (propylene carbonate) (PPC) and other devices and supporting utilities and auxiliary facilities, producing more than 30 kinds of products mainly composed of resin materials, new chemical materials, degradable resins and battery electrolytes, with a total product volume of 8.7556 million tons per year, with a main product volume of 8.3172 million tons per year.
The project gasifies the by-product of pulverized coal pyrolysis to methanol. Based on the basic chemical raw materials of methanol, the downstream of methanol is coupled with each other through the product chain to extend the product industry chain from three different directions. First, through large-scale MTO, olefin products are obtained and then used as raw materials for high value-added chemical materials. Secondly, high purity DMC was produced by gas phase oxidative carbonylation of methanol, and diethyl carbonate (DEC) and methyl ethyl carbonate (EMC) electrolyte solvents were produced by DMC deep processing to produce battery electrolyte with high added value. Thirdly, acetic acid is produced by carbonylation of methanol, vinyl acetate is produced by acetic acid, vinyl acetate copolymer (EVA) and other new chemical materials are produced by coupling of acetic acid and MTO alkene, and ethanol is produced by simultaneous hydrogenation of acetic acid as raw materials for battery electrolyte EMC and DMC. Source: BDO Research Institute