PROCESS FOR PRODUCING TEREPHTHALIC ACID

World Intellectual Property Organization Patent

APP PUB NO WO-2004043893-A1
SERIAL NO

PCTJP0314550

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Abstract

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A process for producing a high-purity aromatic dicarboxylic acid, e.g., terephthalic acid, through simplified steps at a high energy efficiency. The process for producing terephthalic acid as a given target compound is characterized in that a solid-liquid separation step and a cleaning step are conducted in one apparatus and that in the step of removing a residual liquid adherent to a terephthalic acid cake by evaporation, at least part of the evaporation of the residual liquid is conducted by means of the internal energy possessed by the terephthalic acid cake and/or residual liquid.

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Patent Owner(s)

Patent OwnerAddress
MITSUBISHI CHEM CORPJPJAPAN'S TOKYO PORT 31 NO 19 CHICAGO

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Inventor(s)

Inventor Name Address
OGATA TOMOHIKO OTSU-SHI SHIGA-KEN 520
NUMATA MOTOKI MATSUYAMA-SHI EHIME-KEN 790
ISOGAI TAKAYUKI 〒1008251 東京都千代田区丸の内一丁目１番１号 三菱ケミカル株式会社内 TOKYO ?1008251

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