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Butadiene Plant

60,000 ton/year, Nippon Zeon Process, Built 1989  

The plant processes the C4 fraction through an initial extractive distillation using dimethylformamide (DMF), by separating the butylenes and butanes from the butadiene and acetylenics. With a second extractive distillation it separates the vinyl acetylene, and finally, through a rectification process, it separates the methyl acetylene and the heavy hydrocarbons from the 1,3-butadiene (butadiene). 

These three main sections are combined with others using vessels to purify the solvent and to additivate the processing of various chemicals from a condensation water circuit, from a tower water circuit and from a flare and draining header. The produced butadiene has a minimum purity of 99.6%. A recovery of 98% in weight is expected compared to the inflowing butadiene with C4 fraction.

Butadiene Process Description

Butadiene Plant Drawing

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