Mixtures of hexahydrotriazines useful as H.sub.2 S scavengers

Details Mixtures of hexahydrotriazines useful as H.sub.2 S scavengers Mixtures of hexahydrotriazines useful as H.sub.2 S scavengers

1992-10-09

1994-09-13

Shah, Mukund J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

544216, C07D25104

Patent

active

053470044

ABSTRACT:
A mixture of amines made by reacting an amine compound with an aldehyde compound has been found to reduce the levels of H.sub.2 S 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: ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 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 H.sub.2 S levels in hydrocarbon or aqueous streams in the presence of CO.sub.2 which does not compromise their performance.

REFERENCES:
patent: 2729679 (1956-01-01), Anderson
patent: 4266054 (1981-05-01), Au
patent: 4523947 (1985-06-01), Szczepanski et al.
patent: 4894178 (1990-01-01), Ho et al.

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