Method of abating corrosion in crude oil distillation units

Details Method of abating corrosion in crude oil distillation units Method of abating corrosion in crude oil distillation units

1988-09-14

1989-08-08

Sneed, H. M. S.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With prevention of corrosion or erosion in system

208347, 208 48R, 585950, 423DIG8, C10G 912, C10G 916

Patent

active

048550353

ABSTRACT:
A process for abating corrosion caused by ammonium bisulfate in a crude column overhead transfer line operated at a temperature above the nominal aqueous dew point and in contact with a crude oil feed stream containing sulfur oxides, ammonia and a hydrochloric acid neutralizing amine, which process comprises maintaining a chloride level in said crude oil feed stream sufficient to provide a mole ratio of ammonium chloride to ammonium bisulfate of greater than about 20 in said crude column overhead transfer line.

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