公开(公告)号：US3617469A

公开(公告)日：1971-11-02

申请号：US3617469D

申请日：1968-12-26

Applicant: TEXACO INC

Inventor： SCHILINGER WARREN G ,  JESSE DALE R ,  TASSONEY JOSEPH P

IPC: C10G1/00 ,  C10G1/06

CPC classification number: C10G1/065 ,  C10G1/002

Abstract: Continuous process for recovering shale oil from a slurry of raw oil shale in shale oil. Water and hydrogen gas are injected under pressure into the raw oil shale-shale oil slurry, and the mixture is immediately introduced into an externally heated noncatalytic tubular retort maintained at an outlet temperature in the range of about 850* to 950* F. and at a pressure in the range of about 300 to 1,000 p.s.i.g., and preferably at 500 p.s.i.g. for maximum yields of shale oil having a minimum nitrogen content. In the tubular retort under conditions of turbulent flow, the raw shale is completely stripped of kerogen in about 1/4 to 3 minutes (preferably less than a minute), and by simultaneous pyrolysis and hydrogenation without added catalyst, the kerogen is converted to a gaseous effluent from which shale oil is separated having a substantially reduced nitrogen and sulfur content. Yields of such shale oil from for example Colorado shale are about 116 percent of the Fischer Assay; however, if desired, still higher yields of shale oil (about 125 percent of the Fischer Assay) containing a greater amount of material in the middle distillate boiling range may be obtained by submitting the prehydrogenated gaseous effluent from the tubular reaction zone to catalytic hydrogenation, after first removing essentially all of the spent shale. Water is also produced by the system in quantities which are in excess of process requirements.