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Promoting the Use of Fiberglass Equipment
Lined with Corrosion Resistant Plastic

A challenge to design and fabricate, the largest-known PVDF-lined vessels now successfully serve at PTA plants

When BP, London, decided to expand its purified terephthalic acid (PTA) capabilities in the Far East, the company was faced with the prospect of building two large scrubbers that would be subject to bromine corrosion. BP, working in conjunction with CPF Dualam, Montreal, decided to fabricate these large vessels for bromine service using chemically inert Kynar polyvinylidene fluoride (PVDF), from Atofina Chemicals, Philadelphia, as a primary corrosion barrier.

BP and Dualam selected Kynar PVDF because it also provides the chemical and permeation resistance necessary at the operating temperatures while being a cost-effective fluoropolymer. Predicting service lives for the vessels is difficult, but they are expected to last as long as titanium vessels, or more than 20 years, depending on service conditions.

Author: Diane Dierking
Posted on: May 2004
Source: Chemical Processing

John Kidd Awards

  • 2018 John Kidd Award Winner

    2018 John Kidd Award Winner

    We are proud to announce that Hardin Wells takes top honors with this year’s award. His career in composites spans more than 32 years. Amazingly, all of that has been with a single firm. Not many of us can make that same claim. Hardin has long been...

The John Kidd award is presented annually to the individual whose performance best exhibits the pursuit of excellence and integrity in the field of Dual Laminates. The individual can be a fabricator, material supplier, inventor, consultant, end user, welder, or anyone else who has been instrumental in the development fabrication, or promotion of Dual Laminates.

John Kidd Award Winners Nominations