Removal of hydrogen sulphide

Details Removal of hydrogen sulphide Removal of hydrogen sulphide

1987-01-28

1989-02-07

Davis, Curtis R.

Mineral oils: processes and products

Refining

Sweetening

208236, 208237, 208240, 423244, 423220, 423224, 166265, 175 64, C10G 2700

Patent

active

048029734

ABSTRACT:
Hydrogen sulphide is scavenged from a feedstock comprising crude oil and hydrogen sulphide by adding a compound of general formula: ##STR1## to the feedstock. X and Y are carbon or nitrogen atoms and the interatomic bond is triple or double as appropriate. Any two or more of R.sup.1 -R.sup.4 are organic groups containing electronegative functional groups. The remaining two or less of R.sup.1 -R.sup.4 are hydrocarbyl groups, hydrogen atoms or zero.
Preferred scavengers include di-isopropylazo dicarboxylate and dimethylacetylene dicarboxylate.

REFERENCES:
patent: 2882232 (1959-04-01), Haines et al.
patent: 3090748 (1963-05-01), Guttner et al.
patent: 3258421 (1966-06-01), Grutsch
patent: 4432962 (1984-02-01), Gowdy et al.
patent: 4539189 (1985-09-01), Starkston et al.
patent: 4569766 (1986-02-01), Kool et al.
patent: 4647397 (1987-08-01), Starkston et al.
patent: 4680127 (1987-07-01), Edmondson

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