Process for the demercaptanization of petroleum distillates
AssigneeDS2 Tech, Inc.
InventorsWilliam Wismann, Santosh K. Gangwal
Life of this patent
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Abstract
The demercaptanizaiton of petroleum distillates can be carried out by sorption of the mercaptan with activated carbon and oxidation of the sorbed mercaptan to disulfide at between approximately 20° C. to 55° C. The activated carbon used in the process is commercially readily available. Its surface area typically ranges from between approximately 500 to 1500 m2/g and has substantial percentage of the pores in the 10 to 100 Angstrom range.
Claims19
A process for removing mercaptans from disillates comprising:
- contacting distillates having mercaptans to activated carbons without the addition of an alkalizing compound, wherein said activated carbons selectively adsorb said mercaptans;
- and
- providing oxidizing agents that react with said selectively adsorbed mercaptans.
A process for removing mercaptans from petroleum distillates comprising:
- providing at least one surface of activated carbons;
- contacting said petroleum distillates having mercaptans to said at least one surface of activated carbons without the addition of an alkalizing compound, said at least one surface of activated carbon selectively adsorbing said mercaptans;
- and
- exposing said petroleum distillates to oxidizing agents, wherein said oxidizing agents oxidize said adsorbed mercatans.
A process for removing mercaptans from petroleum distillates comprising:
- providing at least one fixed-bed of activated carbons, said activated carbons having a pore size within the range of approximately between 10 to 100 Angstroms;
- adding petroleum distillates having mercaptans to said fixed bed of activated carbons without the addition of an alkalizing compound, said fixed bed of activated carbons selectively adsorbing said mercaptans;
- and
- applying an air stream to said at least one fixed bed, said air stream oxidizing said selectively adsorbed mercaptans at a temperature within the range of approximately 20° C. to 55° C.
Dependencies are inferred from the claim text.