Dehydration of hydrocarbons

Details Dehydration of hydrocarbons Dehydration of hydrocarbons

C - Chemistry, Metallurgy

07

C

162/115, 196/262

C07C 7/10 (2006.01) C10G 21/16 (2006.01) C10G 33/04 (2006.01)

Patent

CA 1122229

ABSTRACT The tendency toward ice or solid hydrate formation during cooling of a light hydrocarbon or hydro- carbon mixture such as LPG or NGL for storage or transport at sub-zero temperatures is eliminated by mixing it with aqueous methanol solution in a mixer 5, cooling the mixture in cooler 8 and thereafter separating the hydro- carbon and aqueous phase in a separator 10, the solution being chosen to be substantially insoluble in the hydro- carbon phase and freeze below the temperature to which the mixture is cooled, and at least part of the aqueous phase being recycled by pump 17 to the mixer 5 for re-use with methanol being added as required to restore its concentration in the recycling liquor towards that of the initial aqueous solution and some of the recycling liquor being removed as required to restore the quantity of circulating liquor towards its initial level.

331848

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