Discuss the differences between the high-chemistry process and the Shanghai Pujing process in ethylene glycol production

The original poster, please discuss each process separately first

Mainly, we still don’t understand the landscape construction techniques. There are many processes for producing ethylene glycol, including those based on coal and those based on biological sources

Refer to this paper: http://www.doc88.com/p-5425090782595.html

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This post was last edited by zcj528 on 2020-9-1 09:20. First of all, looking at the current market share, the majority choose factories that use high-chemistry processes; only a few companies use the Pujing process. In terms of performance, the high-chemistry process is the best, and it also exhibits the best results when operated over long periods of time. Pu Jing was indeed adopted quite early on, but due to the lack of ongoing updates in manufacturing technology, some of its processes are no longer advanced enough. Secondly, it seems that Pu Jing is currently developing other manufacturing technologies, and its focus no longer appears to be on coal-based ethylene glycol. There are many details in the differences between the process flows of Gao Chemical and Pu Jing; regarding the procedures for esterification and carbonylation, each design firm has its own distinct approach. In each coal-based ethylene glycol plant, the key factor affecting long-term operation is the performance of the hydrogenation catalyst; the lifespan and selectivity of this catalyst directly influence the operation of the ethylene glycol plant. Therefore, the differences between high chemistry as mentioned in the question and Shanghai Pujing’s processing methods are quite significant; there are advantages in terms of process design as well as the treatment of waste gases and liquids. In terms of market share, Gao Huaxue currently has a slight advantage.