PROCESS FOR MANUFACTURING TEREPHTHALIC ACID

摘要

This invention relates to a process for manufacturing terephthalic acid and more particularly, to a process for manufacturing terephthalic acid in a high recovery rate with high purity in accordance with the practice of this invention comprising the following procedures: polyethylene terephthalate (hereinafter referred to as "PET") scrap is hydrolyzed with alkaline aqueous solution to give the slurry of terephthalic acid alkali metal/earth metal salt, then the particles of terephthalic acid formed from acid-neutralization are enlarged to recover terephthalic acid with high purity.