Liquid removal process in pipelines through a moving piston

Details Liquid removal process in pipelines through a moving piston Liquid removal process in pipelines through a moving piston

1993-07-30

1995-02-14

Dean, Richard O.

Cleaning and liquid contact with solids

Processes

Using solid work treating agents

134 2211, 134 221, B08B 900, B08B 904, B08B

Patent

active

053891554

ABSTRACT:
A process for use in gas pipelines, where the condensate liquid is withdrawn by passing a cylinder made out of a spongy polymeric material through the pipeline, includes propelling the cylinder by a small pressure difference between the trailing part of the cylinder and the front part of the cylinder, so that the displacement of the cylinder along the interior surfaces of the pipeline pushes the above mentioned condensate. The piston is made out of a spongy material, preferably flexible spongy polyurethane with a density lower than 40 kg per cubic meter so that the piston only suffers a maximum dimensional loss of 0.50% after traveling pipelines with a total length of more than 1000 km.

REFERENCES:
patent: 2906650 (1959-09-01), Wheaton
patent: 5032185 (1991-07-01), Knapp

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