Method to reduce pressure drop in polyamide process piping

Details Method to reduce pressure drop in polyamide process piping Method to reduce pressure drop in polyamide process piping

1980-08-15

1982-04-20

Cohan, Alan

Fluid handling

Processes

Affecting flow by the addition of material or energy

F17D 116

Patent

active

043253970

ABSTRACT:
This invention is a method to reduce pressure drop in polyamide process piping comprising injecting linear polyethylene glycol having a molecular weight above 10,000 around the periphery of the piping and forming a coating of the polyethylene glycol on the internal surface of the piping where it lubricates the flowing polyamide.

REFERENCES:
patent: 459374 (1904-05-01), Issacs et al.
patent: 2821205 (1928-01-01), Chilton et al.
patent: 3040760 (1962-06-01), Macks
patent: 4181137 (1980-01-01), Conti
Canadian Journal of Engineering; Feb. 1961; pp. 27-36; Article by Charles, Grovier & Hodgson.
A.I.Ch.E. Journal; vol. 10, No. 6, pp. 817-819, Nov. 1964; Article by J. C. Slattery.

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