MARK VENETTI
Engineers in Bethel Park, PA
License number
Pennsylvania PE036862E
Category
Engineers
Type
Professional Engineer
Address
Address
Bethel Park, PA 15102
Professional information
Process For Heating Recycle Gas In Oil Shale Retorting
US Patent:
4436611, Mar 13, 1984
Filed:
Jul 1, 1983
Appl. No.:
6/510291
Inventors:
Louis H. Jaquay - Pittsburgh PA
Mark Venetti - Bethel Park PA
Mark Venetti - Bethel Park PA
Assignee:
Dravo Corporation - Pittsburgh PA
International Classification:
C10G 102, C10B 4902, C10B 5306
US Classification:
208 11R
Abstract:
Recycle gas for the indirect retorting of oil shale, is heated after the oil has been recovered from the gas, utilizing the residual carbon in hot oil depleted shale. The hot oil depleted shale is charged into a vertical shaft furnace where it is combusted by the introduction of air into the upper portion of the furnace. The heat so generated is recovered from the lower part of the furnace for heating the recycle gas and cooling the spent shale. A portion of the coarse fraction of the cooled spent shale discharged from the bottom of the furnace is recycled to the top to regulate the temperature of combustion. The recycle gas may be heated directly by countercurrent contact with the hot, spent shale in the lower portion of the furnace or indirectly in a heat exchanger by an inert gas which is circulated through the lower portion of the furnace. The gaseous products of stoichiometric combustion of the residual carbon from the upper part of the furnace are withdrawn at an intermediate level with, and as a component of, the recycle or inert gas withdrawn from the bottom of the furnace.