Shell Oil Comapny

Scott C Roberts

John E Gwyn

A process for the transfer of heat between solids is described in which a particulate solid is allowed to fall at a substantially uniform rate through a dilute phase fluidized bed of another particulate solid.

Process for heat transfer with dilute phase fluidized bed

A process for pyrolysis of coal wherein the subdivided coal is preheated, pyrolyzed, and subjected to heat recovery after pyrolysis, heat transfer being effected by contacting the subdivided coal as a dilute-phase fluidized bed in the first stage of dual preheating zones with a first particulate heat carrier, with a second particulate heat carrier in a dense-phase fluidized bed in the second preheating stage, followed by pyrolysis in a dense-phase fluidized bed pyrolysis zone. The separate particulate heat carriers are employed in such manner that one mass of heat carrier is utilized for preheating the subdivided coal in the first stage and heat recovery, and a second mass of heat carrier is utilized for pyrolysis of the coal and the second stage preheating.

Process for the pyrolysis of coal in dilute- and dense-phase fluidized

An integrated process for production of light hydrocarbons and synthesis gas is disclosed. The process is characterized by pyrolysis of hydrocarbonaceous materials utilizing a solid particulate heat carrier, the heat carrier also providing heat for the conversion of a carbonaceous material to synthesis gas.

Pyrolysis process

A retorting process for recovery of hydrocarbonaceous fluids from subdivided solid materials, specifically oil shale, is described wherein the subdivided solid material is preheated, retorted, and subjected to heat recovery after retorting, heat transfer being effected by contacting the subdivided solid material as a dilute-phase fluidized bed in a separate preheating zone with a first particulate heat carrier, and with a second particulate heat carrier in a dense fluidized bed in a retorting zone. Separate particulate heat carriers are employed in such manner that one mass of heat carrier is utilized for preheating the solid material and heat recovery, and a second mass of heat carrier is utilized for retorting of the subdivided preheated solid material.

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Houston, TX, United States of America

Scott C Roberts