Process for treating a hydrocarbon substrate with a bisoxazolidine hydrogen sulfide scavenger
First Claim
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1. A method for scavenging sulfhydryl compounds from a substantially water free hydrocarbon substrate comprising a sulfhydryl content, said method comprising:
- reacting an alkanolamine with a paraformaldehyde to form a condensation product comprising a water content and a sulfhydryl scavenging compound having the following general structure;
##STR2## wherein n is from about 1 to about 2,R1 and R2 independently are selected from the group consisting of hydrogen, phenyl groups, and linear, branched, or cyclic alkyl, alkenyl, and alkynyl groups having from about 1 to about 6 carbon atoms, treating said condensation product to reduce said water content, producing sulfhydryl scavenging agent comprising about 5% water or less; and
mixing said substrate with an amount of said sulfhydryl scavenging agent effective to reduce said sulfhydryl content of said substrate.
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Abstract
The present invention provides a method for scavenging sulfhydryl compounds from sour hydrocarbon substrates, preferably crude oils, refined distillate streams, and natural gas, by mixing the substrates with preferably substantially water free bisoxazolidines.
18 Citations
18 Claims
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1. A method for scavenging sulfhydryl compounds from a substantially water free hydrocarbon substrate comprising a sulfhydryl content, said method comprising:
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reacting an alkanolamine with a paraformaldehyde to form a condensation product comprising a water content and a sulfhydryl scavenging compound having the following general structure;
##STR2## wherein n is from about 1 to about 2,R1 and R2 independently are selected from the group consisting of hydrogen, phenyl groups, and linear, branched, or cyclic alkyl, alkenyl, and alkynyl groups having from about 1 to about 6 carbon atoms, treating said condensation product to reduce said water content, producing sulfhydryl scavenging agent comprising about 5% water or less; and mixing said substrate with an amount of said sulfhydryl scavenging agent effective to reduce said sulfhydryl content of said substrate. - View Dependent Claims (2, 3, 4)
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5. A method for scavenging sulfhydryl compounds from a substantially water free hydrocarbon substrate comprising a sulfhydryl content, said method comprising:
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reacting an alkanolamine with a paraformaldehyde to form a condensation product comprising a water content and a sulfhydryl scavenging compound having the following general structure;
##STR3## wherein R1 and R2 independently are selected from the group consisting of hydrogen, phenyl groups, and linear, branched, or cyclic alkyl, alkenyl, and alkynyl groups having from about 1 to about 6 carbon atoms;treating said condensation product to reduce said water content, producing a sulfhydryl scavenging agent comprising about 5% water or less; and mixing said substrate with an amount of said sulfhydryl scavenging agent effective to reduce said sulfhydryl content of said substrate. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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12. A method for scavenging sulfhydryl compounds from a substantially water free hydrocarbon substrate comprising a sulfhydryl content, said method comprising:
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reacting an alkanolamine with an aldehyde to form a condensation product comprising a water content and a sulfhydryl scavenging compound comprising an N--C--N moeity; treating said condensation product to reduce said first water content, producing a sulfhydryl scavenging agent comprising about 5% water or less; and mixing said substrate with an amount of said sulfhydryl scavenging agent effective to reduce sa id sulfhydryl content. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification