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Terephthalic Acid Manufacture Technology Description

Online Terephthalic Acid Data: Manufacture, Uses and Applications

Intratec Chemical Process Library is the first free online encyclopedia of chemical process technologies. Our Library covers not only processes description themselves, but also the economics surrounding chemicals production, providing real-world knowledge on the production of several chemical commodities. Click here to check all chemicals covered.

In this page you will find free data about Terephthalic Acid, including:

  • What is Terephthalic Acid
  • How to make Terephthalic Acid
  • Terephthalic Acid uses and applications

This page presents brief synopsis of Terephthalic Acid production technology, describing, in a concise way, relevant technical and economic aspects. Each manufacturing process description will consist of:

  • Major process steps
  • Simplified, schematic flow diagram & key equipment
  • Important safety or environmental considerations
  • Economic perspective, comprising capital expenditures and/or operating expenses

All content from Intratec's Chemical Process Library was produced based on reports published by Intratec. To learn more about Terephthalic Acid production processes presented below and others examined in Intratec reports, click here.

Terephthalic Acid Manufacture from p-Xylene

Terephthalic acid is an aromatic dicarboxylic acid, mainly used to produce saturated polyes ters, primarily PET (polyethylene terephthalate) followed by PBT (polybutylene terephthalate). A small portion of terephthalic acid is employed in other uses, such as polyamides, liquid crystal polymers and plasticizers.

Technology Description

The process described here is a conventional technology for purified terephthalic acid (PTA) production from p-xylene, similar to one originally developed by Amoco Corp. (merged with BP in 1998) in the 1960s. The figure below presents a simplified flow diagram of the process.

Terephthalic Acid Manufacture Technology - Process Flow Diagram

Oxidation

P-xylene is mixed with acetic acid solvent ...

Crude terephthalic acid recovery

The crude terephthalic acid (CTA) slurry from ...

Purification

The CTA is dissolved with hot water and ...

PTA pathways

PTA has been a commercial product since the 1960s. Since then, ...

Economic Performance

The total capital investment estimated to construct a plant with capacity ...

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This synopsis is based on the report Terephthalic Acid Production via Solution Process - Cost Analysis. (For more information, Click here).