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On August 3, the website of the Development and Reform Commission of Dezhou City, Shandong Province, published information on the approval of the seventh batch of projects for 2021. Shandong Hualu Hengsheng Chemical Co., Ltd. plans to invest 4.4 billion yuan to build a PBAT biodegradable plastic production facility with an annual capacity of 120,000 tons. According to the public announcement, the specific details of the project are as follows: Construction period: 2021–2023. Total investment: 4,428.17 million yuan. Location of construction: Dezhou Canal Hengsheng Chemical Industry Park, Decheng District, Dezhou City, Shandong Province. Scale and scope of construction: Using calcium carbide as raw material, and employing the dry-process technology for the production of acetylene, a facility with an annual production capacity of 100,000 tons of acetylene will be built ； Adopt the methanol-air oxidation of iron-molybdenum catalyst method for formaldehyde production, and construct a 720,000 tons/year formaldehyde plant (based on 37 wt%) ； Using formaldehyde, acetylene, and hydrogen as raw materials, and employing the advanced alkyne-aldehyde process technology for 1,4-butanediol production, a 300,000-ton/year 1,4-butanediol (BDO) production facility will be constructed, along with a pressure swing adsorption hydrogen production unit with a capacity of 25,000 Nm3/h ； Using 1,4-butanediol, terephthalic acid (PTA) and adipic acid as raw materials, a 120,000-ton/year PBAT production plant is to be built via a one-step polycondensation process ； Using 1,4-butanediol as a raw material, γ-butyrolactone is produced through BDO gas-phase dehydrogenation; a plant with an annual production capacity of 50,000 tons of N-methylpyrrolidone (NMP) is established via a catalytic synthesis process involving γ-butyrolactone and methylamine ； Public utilities, auxiliary facilities, and safety and environmental protection facilities are provided as appropriate. Once the project is completed and put into operation, it will produce 179,500 tons of 1,4-butanediol per year, as well as 120,000 tons of polybutylene terephthalate adipate (PBAT) per year ； N-methylpyrrolidine amounts to 50,000 tons, with butanol as a by-product at 5,100 tons, and **furan at 13,200 tons. The main processes of the project include: the dry production of acetylene from calcium carbide, the oxidation of methanol with air to produce formaldehyde, the production of 1,4-butanediol via the alkyne-aldehyde method, the production of polybutylene terephthalate from adipic acid through a one-step polycondensation reaction, and the gas-phase dehydrogenation of BDO to produce γ-butyrolactone, as well as the catalytic synthesis of N-methylpyrrolidone from γ-butyrolactone and methylamine. The main equipment includes core devices such as acetylene generators, formaldehyde reactors, acetylation reactors, hydrogenation reactors, PBAT polymerization reactors, BDO dehydrogenation reactors, and N-methylpyrrolidone reactors, as well as various types of towers, heat exchangers, packaging equipment, pumps and fans, mixers, containers, filters, and other equipment – totaling over 1,000 units.