Quick removal of mercaptans from hydrocarbons

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

C - Chemistry, Metallurgy

10

G

C10G 17/02 (2006.01) C07C 7/20 (2006.01)

Patent

CA 2720922

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 R1 and R2 are 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.

Les mercaptans et/ou le sulfure dhydrogène (H2S) dans les hydrocarbures, les naphtas, les essences et produits similaires, peuvent être extraits de ceux-ci par mise en contact intime avec une formulation de piégeage des mercaptans contenant au moins un azodicarboxylate disubstitué de formule R1OOCN=NCOOR2, où R1 et R2 sont indépendamment des radicaux alkyle, des radicaux alcényle et des radicaux aromatiques ayant 1 à 18 atomes de carbone. Ces piégeurs éliminent les mercaptans et/ou H2S des hydrocarbures, plus rapidement que beaucoup de piégeurs classiques des mercaptans. Une quantité de piégeage efficace dazodicarboxylate disubstitué dans le fluide d'hydrocarbures se situe dans lintervalle allant denviron 5 à environ 20 parties en poids, rapporté à 1 partie de soufre du mercaptan et/ou de H2S.

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