Method of treating sour gas and liquid hydrocarbon
AssigneeNalco/Exxon Energy Chemicals, L.P.
InventorsDaniel S. Sullivan, III, Allan R. Thomas, Juan M. Garcia, III, Paul Yon-Hin
Life of this patent
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Abstract
Reaction of 1,3,5-tri-substituted-hexahydro-1,3,5-triazine is accelerated in H.sub.2 S scavenging by the addition of quaternary ammonium compound. The preferred hexahydro triazines are 1,3,5-tri-methyl-hexahydro-1,3,5-triazines and 1,3,5-tri-methoxypropyl-hexahydro-1,3,5-triazines. The blend of the hexahydro triazine and quaternary ammonium compounds can be used to treat sour gases and liquids (e.g. sour kerosene, crude oil, fuel oils, heating oils, distillate fuels, bunker fuel oil, and the like.
Claims9
A method of reducing H.sub.2 S in a hydrocarbon fluid which comprises contacting the fluid with an effective amount of a scavenging composition, comprising an aqueous solution of
- (a) a 1,3,5-trimethyl-hexahydro-1,3,5 triazine H.sub.2 S scavenger;
- and
- (b) a quaternary ammonium compound having the following formula:
- ##STR5## where R.sub.1 and R.sub.2 are independently alkyl groups or hydroxyalkyl groups having from 1 to 4 carbon atoms
- R.sub.3 is a benzyl group, and
- R.sub.4 is an alkyl or aryl group having from 7 to 20 carbon atoms, and
- X.sup.- is an anion selected from the group consisting of chloride and methyl sulfate;
- wherein the amount of the quaternary ammonium compound is sufficient to accelerate the H.sub.2 S scavenging action of the 1,3,5-trimethyl-hexahydro-1,3,5 triazine in comparison with the scavenging action of said triazine without the quaternary ammonium compound.
A method of reducing H.sub.2 S in a hydrocarbon fluid comprising introducing into the fluid from 50 to 3,000 ppm by volume of a scavenging composition comprising (a) a 1,3,5-trimethylhexahydro-1,3,5-triazine, and (b) a water soluble quaternary ammonium compound which accelerates the scavenging effect of the triazine scavenger, the weight ratio of (a):(b) in the scavenging composition being between 10:0.1 to 1:1.
Dependencies are inferred from the claim text.