Process for reducing the restart pressure of streams

Fluid handling – Processes – Affecting flow by the addition of material or energy

Reexamination Certificate

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C137S551000, C073S054010

Reexamination Certificate

active

07896020

ABSTRACT:
A process for reducing the restart pressure of streams selected from waxy crude oils, water-in-crude emulsions and dispersions of hydrocarbon hydrates, at least partially structured. A mechanic disturbance is applied, in flow-stop conditions, on the streams, having: temperatures lower than the WAT (Wax Appearance Temperature) for the waxy crude oils and water-in-crude emulsions; temperatures lower than the forming temperatures of the hydrates and pressures higher than the forming pressure of the hydrates, for the dispersions of hydrocarbon hydrates.

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patent: 99/57482 (1999-11-01), None
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patent: 03/012401 (2003-02-01), None

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