초록 ▼

A mixture of amines made by reacting an amine compound with an aldehyde compound has been found to reduce the levels of H2S in liquid or gaseous hydrocarbon streams. At least one of the compounds must have an alkoxyalkylene radical. In one embodiment of the invention, the mixture of amines contains

A mixture of amines made by reacting an amine compound with an aldehyde compound has been found to reduce the levels of H2S in liquid or gaseous hydrocarbon streams. At least one of the compounds must have an alkoxyalkylene radical. In one embodiment of the invention, the mixture of amines contains at least one hexahydrotriazine compound of the formula: [Figure] (i) where R1, R2, R3, R4, R5 and R6 are independently selected from the group consisting of hydrogen and an alkyl radical, including substituted alkyl radicals, of 1 to 5 carbon atoms; where at least one of the groups is an alkoxyalkylene group. In another embodiment of the invention, the amine mixture may contain other by products, such as the monomers which make up the hexahydrotriazine, with or without the hexahydrotriazine being present. These materials are selective to the reduction of H2S levels in hydrocarbon or aqueous streams in the presence of CO2 which does not compromise their performance.

대표청구항 ▼

A method for reducing the levels of hydrogen sulfide (H2S) in a gaseous or liquid stream containing H2S comprising adding to said stream an amount of a composition effective to reduce the H2S level, where the composition comprises at least one hexahydrotriazine of the formula: [Figure] (i) where R1,

A method for reducing the levels of hydrogen sulfide (H2S) in a gaseous or liquid stream containing H2S comprising adding to said stream an amount of a composition effective to reduce the H2S level, where the composition comprises at least one hexahydrotriazine of the formula: [Figure] (i) where R1, R3 and R5 are independently selected from the group consisting of hydrogen and an alkyl radical, including substituted alkyl radicals, where when R1, R3and R5 are not hydrogen, they each have a total of 1 to 5 carbon atoms and where R2, R4 and R6 are independently selected from the group consisting of hydrogen and an alkyl radical, including substituted alkyl radicals, where when R2, R4 and R6 are not hydrogen, they each have a total of 1 to 5 carbon atoms; and where at least one of the R1, R2, R3, R4, R5, and R6 groups of the hexahydrotriazine (i) is an alkoxyalkylene group.