On 14 Aug., the Hangzhou Municipal Ecology and Environment Bureau approved the environmental impact report for Zhejiang Jianye Chemical Co., Ltd. (Jianye Chemical)’s annual 80,000 t/a citric acid ester project.
Project overview
- Nature: Renovation
- Location: Jiande Economic Development Zone, Hangzhou City, Zhejiang Province
- Total investment: USD7.21 million (RMB48.95 million)
- Construction content: To be constructed in two phases
- Phase I: Utilizing the site of the former 20,000 t/a plasticizer Phase I facility (diisobutyl phthalate) to construct a 40,000 t/a tributyl citrate (TBC) unit, with supporting utilities.
- Phase II: Utilizing the site of the former 20,000 t/a plasticizer Phase II facility (dibutyl phthalate) to construct a 38,150 t/a TBC unit, with supporting utilities.
- Phase II: Converting the former 5,000 t/a trioctyl trimellitate facility into a 20,000 t/a acetyl tributyl citrate (ATBC) unit (consuming 18,150 t/a TBC; product includes 5,000 t/a acetic acid), with supporting utilities.
- Product plan:
- Phase I: 40,000 t/a TBC
- Phase II: 20,000 t/a TBC, 20,000 t/a ATBC, 5,000 t/a acetic acid
- Process technology:
- TBC: Produced by esterification, using citric acid and n-butanol as raw materials under concentrated sulfuric acid catalysis, via esterification reaction.
- ATBC: Produced by co-acetylation, using tributyl citrate and acetic anhydride as raw materials under concentrated sulfuric acid catalysis, via acetylation to yield ATBC and acetic acid.
- The process package and design are provided by Shandong Branch of Liaoning Fangda Engineering Design Co., Ltd., employing the most advanced semi-continuous process technology available domestically.
- Labor quota: 45 new employees
- Working system: three 8hr shifts per day, 300 working days totaling 7,200 working hours per year
Jianye Chemical is a leading enterprise in the low-carbon aliphatic amine industry, with a production capacity of 133,000 t/a organic amines (n-butylamine, di-n-butylamine, tri-n-butylamine, cyclohexylamine, dicyclohexylamine, ethylamine, diethylamine, triethylamine, isopropylamine, diisopropylamine, n-propylamine, di-n-propylamine, tri-n-propylamine, sec-butylamine, di-sec-butylamine, isobutylamine, and diisobutylamine) and 60,000 t/a acetate esters (n-propyl acetate, ethyl acetate, isopropyl acetate, and isobutyl acetate), among others.
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