Oil soluble sulfide scavengers with low salt corrosion and methods of making and using these scavengers
OwnerHitesh Ghanshyam Bagaria, Gregory Kaplaninventors
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Abstract
Sulfide scavengers useful to reduce sulfide concentration in fluid streams and methods of using these scavengers. The scavengers comprise oil soluble reaction products of formaldehyde/N-substituted hydroxylamines and can be used to reduce, for example, H2S content in viscous hydrocarbon oil streams.
Claims23
A method for reducing sulfides in a fluid comprising contacting said fluid with a reaction product of a N-substituted hydroxylamine and formaldehyde (AHAF).
6-8. (canceled)
(canceled)
A method for making a dialkylhydroxylamine/formaldehyde reaction product comprising reacting a hydroxylamine of the formula RR′NOH with formaldehyde, wherein R and R′ are each independently chosen from H, linear, branched, and cyclic C1-C10 alkyl, alkenyl, or aryl groups;
- with the proviso that both R1 and R2 are not H;
- said method being conducted at a temperature of about above 60° C. for about 0.5-2.0 hours.
(canceled)
An N-substituted hydroxylamine/formaldehyde reaction product having the structure
- wherein n is an integer from 0-10;
- R1 and R2 are each independently chosen from H, C1-C10 linear, branched, alkyl, alkenyl, or aryl groups with the proviso that both R1 and R2 are not H.
Dependencies are inferred from the claim text.