ABSTRACT With the large consumption of terephthalic acid in Indonesia, it is necessary to develop a terephthalic acid industry to support the downstream industry which is made from terephthalic acid. The purpose of designing a Purified Terephthalate Acid (PTA) plant is to determine whether the plant is feasible or not to build. The PTA plant uses the BP (Amoco) process with paraxylene as raw…