Nalco/exxon Energy Chemicals,l.p.

Nalco Chemical Company

Veronica K Braden

Manian Ramesh

Christopher J Murphy

Michael K Poindexter

Michael L Braden

Everett C Phillips

Elizabeth Babaian-Kibala

Paul Fearnside

Tannon S Woodson

This invention relates to inhibiting corrosion in systems of condensing hydrocarbons which contain water and chlorides, and, more particularly, in the overhead of crude oil atmospheric pipestills, with blends of amines. Preferred blends are 2-amino-1-methoxypropane, sec-butylamine, n-butylamine, dipropylamine and monoamylamine; 2-amino-1-methoxypropane, sec-butylamine, monoamylamine, n-butylamine and isobutylamine; and sec-butylamine, 2-amino-1-methoxypropane and 3-amino-1-methoxypropane.

Amine blend neutralizers for refinery process corrosion

2-amino-1-methoxypropane is used as a neutralizing amine in crude oil distillation units. The amine of the invention gives superior neutralization at the first initial condensate compared to other commonly used neutralizing amines.

Use of 2-amino-1-methoxypropane as a neutralizing amine in refinery

Disclosed are a method for inhibiting corrosion in crude oil distillation towers, an improvement in crude oil fractionation, a method for dispersing iron sulfide in a hydrocarbon stream and a hydrocarbon dispersion using the reaction product of hydrocarbyl succinic anhydride and an amine. The reaction product has a molecular weight of from 500-800, the hydrocarbyl substituent has 6-20 carbon atoms, and the amine is selected from EDA, DETA, TETA, TEPA, PEHA, AEP, piperazine, 1,2-PDA, 1,3-PDA, IBPA, MDA or HMDA. The imide product is a filming inhibitor used to treat metal surfaces subject to mineral acid corrosion and disperse iron sulfide particles by adding 3 to 24 ppm to sweet or sour crude contacting the metal surfaces.

Corrosion inhibition in refineries using the reaction product of

A method for reducing cyanide contaminants in refinery waste waters prior to reuse or release into the environment comprising adding to the waters a cyanide reactive scavenger comprising at least one amine-aldehyde reaction product.

Method for removing a cyanide contaminant from refinery waste water

Corrosion, cracking and blistering of steels in contact with water containing refinery streams contaminated with cyanide is inhibited or prevented by treating the streams with a cyanide reactive scavenger comprising at least one amine-aldehyde reaction product.

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Sugar Land, TX, United States of America

Veronica K Braden