Polytrimethylene Terephthalate Production from TPA and Raw Sugar

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This report presents an up-to-date, detailed cost analysis of Polytrimethylene Terephthalate (PTT) production starting from raw sugar and terephthalic acid. The process examined combines a process similar to DuPont process for generating propanediol and a process similar to Degussa (now Evonik) process for producing PTT. In this process, raw sugar (sucrose) is diluted and sucrose is hydrolyzed into glucose and fructose (invert sugars). The invert sugars are then fermented to produce propanediol, which is reacted with terephthalic acid to produce PTT.

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