As of June 18, 2021, the Zhongyuan Dahua 1,000-ton straw sugar to ethylene glycol pilot project has completed a total of approximately 4,000 cubic meters of earth excavation; the installation frame, equipment and outer pipe frame foundations have all been completed. A total of about 400 cubic meters of concrete was poured; the main construction of the on-site cabinet room was completed; 648 meters of pipelines were laid; the underground pipe network and concealed civil engineering were basically completed. The next step will be to enter the installation phase.
According to the environmental impact assessment information of the 1,000-ton straw sugar-to-ethylene glycol pilot project in Dahua, Zhongyuan Province, Henan Province announced by the Puyang Economic and Technological Development Zone in April 2021, the project relies on Zhongkebo Yijin provided laboratory research results and experience accumulation (mainly in the ethylene glycol synthesis part) to carry out pilot scale-up design. An important shareholder of Zhongke Boyijin is the Dalian Institute of Chemical Physics.
The project is jointly developed by Henan Zhongyuan Dahua, Zhongke Baiyijin, Keyuan Industrial Fund, and Donghua Engineering Company.
The pilot plant uses biomass straw sugar aqueous solution and hydrogen as raw materials, and catalytically converts it in a high-temperature, high-pressure, kettle-type reactor to obtain crude ethylene glycol, which is then obtained through a distillation process. High-quality ethylene glycol products, as well as industrial-grade propylene glycol and other by-products. The product scale is 746.8 tons/year of ethylene glycol and 194.4 tons/year of propylene glycol. Previously, small laboratory tests have been completed and high-quality polyester products have been successfully synthesized. The main purpose of the pilot test is to further verify whether the amplification of the process parameters, process and reactor structure is reasonable, and whether the separation effect of the distillation system can meet the purity index.
Project Overview
The project construction location is Puyang Economic, Technological and Industrial Cluster Area, Puyang City (including Puyang Economic Development Zone) Southwest corner of the intersection of Shihua Road and Pushui Road (within the existing factory area of Zhongyuan Dahua Company) Total investment: 20.98 million yuan, project code: 2020-410972-26-03-030443
This project mainly constructs a 1,000-ton ethylene glycol pilot plant. After completion, it can produce 746.8t/a of ethylene glycol and 194.4t/a of propylene glycol. This project uses biomass straw sugar aqueous solution and hydrogen as raw materials. It undergoes hydrogenation reaction in the ethylene glycol synthesis section to synthesize crude ethylene glycol, and then passes through the ethylene glycol distillation section to obtain high-quality ethylene glycol products. At the same time, the by-product industry grade propylene glycol, etc. The main construction equipment includes ethylene glycol synthesis, ethylene glycol distillation and other processes.
Henan Zhongyuan Dahua Group Co., Ltd. is located in Puyang Economic, Technological and Industrial Agglomeration Area and is divided into two factory areas: natural gas chemical equipment area and coal chemical equipment area. The construction site of this 1,000-ton straw sugar to ethylene glycol pilot project is located in the existing factory area of the coal chemical plant area. The public and auxiliary projects of the project rely on the existing facilities in the coal chemical plant area. Therefore, the existing projects in the coal chemical plant area are mainly affected. and its environmental protection measures are introduced.
The main projects in the coal chemical plant area include a 300,000-ton methanol project, a sewage treatment unit standard expansion and transformation project, and a 1,000-ton methyl methacrylate (MMA) synthesis pilot development project. Projects, coal-fired boiler flue gas desulfurization and dust removal integrated ultra-low emission transformation project, 300,000 tons/year liquid carbon dioxide recovery and utilization project (currently the first phase of 50,000 tons/year carbon dioxide recovery has been completed); among them, the sewage treatment device has been upgraded to expand its capacity The transformation project and the coal-fired boiler flue gas desulfurization and dust removal integrated ultra-low emission transformation project are the sewage treatment of the 300,000 tons/year methanol project and the environmental protection treatment project of the coal-fired boiler. </p
