02096 LINING PIPELINES WITH PE- A SOLUTION FOR WET GAS TRANSPORT?

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Product Number: 51300-02096-SG

ISBN: 02096 2002 CP

Author: Gerit Siegmund, Guenter Schmitt, Josef Noga, and Bernd Sadlowsky

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Transport of wet sweet and/or sour gases is sometimes inevitable and sometimes desired to avoid costly gas dehydration. Lining of existing pipelines with PE-liners could be an interesting solution if the permeability of the PE-liners for corrosive gases and water under high pressure could be reduced to an acceptable level and failures at the interface liner/pipeline due to sour gas corrosion could be excluded. The paper outlines results on long time high pressure sour gas permeation tests in a temperature gradient using different types of PE liners without and with gas diffusion barrier. It appeared that the permeation of water vapour and corrosive gases (e.g. hydrogen sulfide) cannot be neglected even through 5 mm PE and corrosion attack can occur under the liner. Options for sub-liner corrosion protection are considered.

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51317--9776-MIC-Resistant HDPE Lining for Seawater Applications

Product Number: 51317--9776-SG

ISBN: 9776 2017 CP

Author: Emily Hunt

Publication Date: 2017

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Two types of corrosion cause the majority of problems in offshore or seawater applications; aqueous corrosion and microbiologically influenced corrosion (MIC). To combat MIC, a novel combination of antimicrobial powder and high-density polyethylene powder was applied through rotational lining.