Three stage processes for the separation of supercritical or...

Details Three stage processes for the separation of supercritical or... Three stage processes for the separation of supercritical or...

2006-08-01

2006-08-01

Shippen, Michael L. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C568S864000, C568S913000

Reexamination Certificate

active

07084313

ABSTRACT:
Processes for separating supercritical or near-critical mixtures containing hydrogen, a solvent gas, methanol and a fatty alcohol under an initial pressure of from 100 to 300 bar are described, wherein the processes comprise: (a) reducing the pressure of such a mixture in a first stage to a pressure of from 50 to 150 bar to form a first recycle gas and a first partially-separated intermediate mixture, wherein the reduced pressure in the first stage is at least below the initial pressure; (b) reducing the pressure of the first partially-separated intermediate mixture in a second stage to a pressure of from 10 to 50 bar to form a second recycle gas and a second partially-separated intermediate mixture; and (c) reducing the pressure of the second partially-separated intermediate mixture in a third stage to a pressure of from 1 to 10 bar to form a third recycle gas and a fatty alcohol product.

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“Supercritical, Single-Phase Hydrogenation Speeds Up The Production Of Fatty Alcohols,” Chemical Engineering News, (Dec., 2001), p. 17.

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