C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
C10G 67/00 (2006.01) C10G 29/04 (2006.01) C10G 67/02 (2006.01)
Patent
CA 2174172
The invention relates to an integrated, continuous process for the removal of organically bound sulfur (e.g., mercaptans, sulfides and thiophenes) comprising the steps of contacting a heavy oil, sodium hydroxide, hydrogen and water at a temperature of from about 380°C to 450°C to partially desulfurize the heavy oil and to form sodium sulfide, contacting said sodium sulfide via steam stripping to convert the sodium sulfide to sodium hydroxide and the sulfur recovered as hydrogen sulfide. The sodium hydroxide is recirculated for reuse. The partially desulfurized, dewatered heavy oil is treated with sodium metal under desulfurizing conditions, typically at a temperature of from about 340°C to about 450°C, under a hydrogen pressure of at least about 50 psi to essentially desulfurize the oil, and form sodium sulfide. Optionally, the sodium salt generated can be regenerated to sodium metal using regeneration technology. The process advantageously produces essentially sulfur-free product oils having reduced nitrogen, oxygen and metals contents and reduced viscosity, density, molecular weight and heavy ends.
Bearden Roby Jr.
Brons Glen
Myers Ronald D.
Bearden Roby Jr.
Borden Ladner Gervais Llp
Brons Glen
Exxon Research And Engineering Company
Myers Ronald D.
LandOfFree
Continuous in-situ combination process for upgrading heavy oil does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Continuous in-situ combination process for upgrading heavy oil, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous in-situ combination process for upgrading heavy oil will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1606597