Corey R Bertelsen

US Patent:

42305578, Oct 28, 1980

Filed:

Feb 22, 1979

Appl. No.:

6/013991

Inventors:

Corey A. Bertelsen - Oakland CA
Byron G. Spars - Mill Valley CA

Assignee:

Chevron Research Company - San Francisco CA

International Classification:

C10B 5306
C10G 102

US Classification:

208 8R

Abstract:

A combination of a retorting process with a granular filtration zone whereby finely divided solids are removed from hydrocarbonaceous vapors. Raw hydrocarbon-containing particles such as shale are retorted by contacting them with heat carrier particles, and the resulting hydrocarbonaceous vapors withdrawn from the retort are contaminated with entrained, finely divided solids. These solids are removed from the hydrocarbonaceous vapors by passing the contaminated vapors at substantially the retorting temperature transversely through a downwardly moving bed of solid contact material maintained at approximately retorting temperature. The solid contact material is selected from retorted solids, heat carrier particles and mixtures of them. The mixture of finely divided solids and contact material withdrawn from the granular filtration may be returned to the process.

US Patent:

43660460, Dec 28, 1982

Filed:

Mar 23, 1981

Appl. No.:

6/246562

Inventors:

Corey A. Bertelsen - Oakland CA
Gene M. Handel - Lafayette CA

Assignee:

Chevron Research Company - San Francisco CA

International Classification:

C10B 5306
C10G 100

US Classification:

208 11R

Abstract:

Oil shale particles separated into coarse- and fine-particle streams prior to retorting in a downward moving bed, wherein the fine particles enter the retort below the top of the fluidized bed to minimize entrainment before pyrolysis occurs.

US Patent:

43361277, Jun 22, 1982

Filed:

May 26, 1981

Appl. No.:

6/267137

Inventors:

Corey A. Bertelsen - Oakland CA

Assignee:

Chevron Research Company - San Francisco CA

International Classification:

C10G 100
C10G 102

US Classification:

208 11R

Abstract:

Residual carbon in pyrolyzed solids burned by combusting a fine fraction separating in a first dilute phase combustion zone and mixing the fine fraction and the bulk of the pyrolyzed solids in a second dilute phase combustion zone.

US Patent:

44028237, Sep 6, 1983

Filed:

Jul 29, 1981

Appl. No.:

6/288095

Inventors:

Corey A. Bertelsen - Oakland CA

Assignee:

Chevron Research Company - San Francisco CA

International Classification:

C10G 100
C10B 5306

US Classification:

208 11R

Abstract:

In a process for pyrolyzing a particulate hydrocarbon-containing solid an improvement comprising removing entrained fines from the product vapors leaving the principal pyrolysis zone and pyrolyzing any remaining hydrocarbons in the fines in a supplemental pyrolysis zone.

US Patent:

43361269, Jun 22, 1982

Filed:

Mar 23, 1981

Appl. No.:

6/246555

Inventors:

Corey A. Bertelsen - Oakland CA

Assignee:

Chevron Research Company - San Francisco CA

International Classification:

C10G 100
C10G 102

US Classification:

208 11R

Abstract:

Combustor and process for burning particularized oil shale by preburning separate fine and coarse particle feedstreams prior to mixing in the main combustion zone.

US Patent:

44793081, Oct 30, 1984

Filed:

Mar 30, 1982

Appl. No.:

6/363725

Inventors:

Corey A. Bertelsen - Oakland CA

Assignee:

Chevron Research Company - San Francisco CA

International Classification:

F26B 310
F26B 1710

US Classification:

34 10

Abstract:

Heat is recovered from a hot particulate solid by passing the solid through a heat recovery zone having a countercurrent flow of gas and internal means for controlling backmixing and residence times, said internal means also containing a circulating heat transfer fluid.

US Patent:

43899501, Jun 28, 1983

Filed:

Feb 19, 1982

Appl. No.:

6/349957

Inventors:

Corey A. Bertelsen - Oakland CA

Assignee:

Chevron Research Company - San Francisco CA

International Classification:

B09B 300
C10G 100

US Classification:

110235

Abstract:

Combustor and process for burning particularized oil shale by preburning separate fine and coarse particle feedstreams prior to mixing in the main combustion zone.

US Patent:

44950586, Jan 22, 1985

Filed:

Jun 6, 1983

Appl. No.:

6/501592

Inventors:

Robert A. Farnham - San Rafael CA
Lawrence P. Zestar - Richmond CA
Corey A. Bertelsen - Oakland CA

Assignee:

Chevron Research Company - San Francisco CA

International Classification:

C10G 102

US Classification:

208 11R

Abstract:

Superheated steam generated by passing wet steam through a superheater containing a fluidized or partially fluidized bed of hot particulate solids recovered from a retorting process especially useful in a process for recovering hydrocarbon vapors from a hydrocarbonaceous solid such as oil shale.