Quick removal of mercaptans from hydrocarbons

Details Quick removal of mercaptans from hydrocarbons Quick removal of mercaptans from hydrocarbons

2009-04-08

2011-11-01

Toomer, Cephia D (Department: 1771)

Fuel and related compositions

Liquid fuels

Organic azide compound, or organic compound having acyclic...

C508S184000, C208S014000, C208S015000, C208S219000

Reexamination Certificate

active

08048175

ABSTRACT:
Mercaptans and/or hydrogen sulfide (H2S) in hydrocarbons, naphthas, gasolines, and the like may be scavenged therefrom by being brought into intimate contact with a mercaptan scavenger formulation containing at least one disubstituted azodicarboxylate of the formula R1OOCN═NCOOR2, where R1and R2are independently alkyl groups, alkenyl groups and aromatic groups having from 1 to 18 carbon atoms. These scavengers remove mercaptans and/or H2S from hydrocarbons faster than many conventional mercaptan scavengers. An effective scavenging amount of disubstituted azodicarboxylate in the hydrocarbon fluid ranges from about 5 to about 20 parts by weight based on 1 part as sulfur of mercaptan and/or H2S.

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