Fujian Baihong Chemical’s 300,000-ton maleic anhydride project, with a total investment of 13.8 billion yuan, is about to go into operation

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! Fujian Baihong Chemical’s 300,000-ton maleic anhydride project, with a total investment of 13.8 billion yuan, is about to go into operation. Recently, the laboratory building and control room for this new materials project at Fujian Baihong Chemical Co., Ltd. have been largely completed; the main production equipment has been installed, and work such as pipeline welding is currently in progress. Its anhydride plant is expected to begin trial operation in May, while the carbonate complex plant is expected to start trial operation in July. Project Overview: This is an expansion project that will be constructed in two phases, with full completion and operation planned for December 2026. Project Name: Baihong Chemical New Materials Project
Constructor: Fujian Baihong Chemical Co., Ltd.
Location: Nanshan Area, Quangang Petrochemical Park, Quangang District, Quanzhou City
Project Area: The total land area is 69.38 hm2.
Total Investment and Environmental Protection Investment: The total investment for this project is 13.8 billion yuan, of which 516.2 million yuan is allocated to environmental protection measures. Construction scale: The project will be built in two phases. In Phase 1, one set each of production units for ethylene carbonate, propylene carbonate, dimethyl carbonate, methyl ethyl carbonate/diethyl carbonate, butane pretreatment for C4 liquefied gas, butane to maleic anhydride conversion, CO2 recovery, acetic acid synthesis, syngas separation, and acetaldehyde recovery will be constructed, along with the accompanying utility systems and auxiliary production facilities ； In the second phase, one set each of production units for butane pretreatment for C4 liquefied gas, conversion of butane into maleic anhydride, 1,4-butanediol, succinic acid, polybutylene succinate, vinyl acetate, batch-type ethylene-vinyl acetate production, and tubular-type ethylene-vinyl acetate production will be constructed, along with the accompanying utility systems and auxiliary production facilities. Product plan: Once the project is fully completed, it will have the capacity to produce 100,000 tons per year of ethylene carbonate, 140,000 tons of propylene carbonate (120,000 tons for internal use), 114,400 tons of dimethyl carbonate (all for internal use), 100,000 tons of methyl ethyl carbonate, 20,000 tons of diethyl carbonate, 350,000 tons of acetic acid (72,000 tons for internal use), 300,000 tons of solid maleic anhydride (271,700 tons for internal use), 150,000 tons of 1,4-butanediol (29,000 tons for internal use), 100,000 tons of succinic acid (30,000 tons for internal use), 50,000 tons of polybutylene succinate, 100,000 tons of vinyl acetate (all for internal use), 150,000 tons of batch-produced ethylene-vinyl acetate, and 200,000 tons of continuous-process ethylene-vinyl acetate. Additionally, by-products such as isobutane, propylene glycol, ethylene glycol, acetaldehyde, and furan will be generated. Technical solution: The project uses ethylene oxide, carbon dioxide, and other raw materials to produce ethylene carbonate products through an addition reaction ； Propylene carbonate products are manufactured using addition reactions with raw materials such as propylene oxide and carbon dioxide ； Dimethyl carbonate is produced using the transesterification process, with self-produced propylene carbonate and methanol as raw materials ； Using self-produced dimethyl carbonate and ethanol as raw materials, ethyl methyl carbonate and diethyl carbonate products are produced via transesterification ； Using syngas as a raw material, hydrogen, CO, and CO2 are produced through carbon dioxide adsorption and purification liquefaction processes ； Using C4 liquefied petroleum gas as raw material, n-butane and isobutane are produced via distillation ； Using self-produced n-butane as the raw material and dibutyl phthalate as the solvent, a fixed-bed oxidation process is employed to produce maleic anhydride ； Butanedioic acid is produced by catalytic hydrogenation using self-produced maleic anhydride as raw material and γ-butyrolactone as solvent ； 1,4-Butanediol is produced using maleic anhydride, methanol, and hydrogen as raw materials via the esterification-hydrogenation method ； Polybutylene succinate products are manufactured using self-produced 1,4-butanediol and succinic acid, through direct esterification and melt polycondensation processes ； Acetic acid products are produced using methanol and CO as raw materials via low-pressure carbonylation ； Vinyl acetate is produced by gas-phase catalytic oxidation using self-produced acetic acid, ethylene, and oxygen as raw materials ； Ethylene-vinyl acetate products are produced using self-produced vinyl acetate and ethylene as raw materials, via a high-pressure polymerization process.