To protect the purity of ethylene glycol at Dow Chemical Co.'s plant at Plaquemine, La., Standard Pipeline Coating Co. recently completed the internal cleaning and coating of Dow's 2 mi, 6 in. dia ship-loading line. Cook Paint & Varnish Co.'s polyamine-cured epoxy was used for the internal coating; it is completely inert to the ethylene glycol, and after several weeks of complete immersion, the glycol had not produced a wetting phase on the surface. The cost of coating was about 25% of the only alternative (i.e., installation of a new stainless steel pipeline). An initial batch of 220,000 lb of high-quality diethylene glycol loaded on shipboard met all specifications with no iron contamination detected. The tests carried out by Dow, the reduction in pumping cost following the application of the film, the method of applying the film by use of a pig with natural gas as the propellant and pressurizing agent, a chemical description of the coating, the resistance of the material to anaerobic corrosion, and scale and paraffin deposit removal are discussed.

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  • Corporate Authors:

    Petroleum Publishing Company

    211 South Cheyenne, P.O. Box 1260
    Tulsa, OK  United States  75221
  • Authors:
    • Shriver, W B
  • Publication Date: 0

Media Info

  • Pagination: p. 82-83
  • Serial:
    • Oil and Gas Journal
    • Volume: 70
    • Issue Number: 36
    • Publisher: PennWell Publishing Company
    • ISSN: 0030-1388

Subject/Index Terms

Filing Info

  • Accession Number: 00056230
  • Record Type: Publication
  • Source Agency: American Petroleum Institute
  • Files: TRIS
  • Created Date: Jul 15 1974 12:00AM