Conocophillips Company

China Petroleum Chemical Corporation

Lummus Technology Inc.

Phillips 66 Company

Max W Thompson

Albert C Tsang

David L Breton

Edward L Sughrue

Paul F Meier

Victor G Hoover

Robert Zapata

Christopher J LaFrancois

Chancelor L Williams

Jan W Wells

Ricky Eugene Snelling

Douglas W Hausler

Joe D Cox

Jean B Thesee

Philip L Collins

Darrin D Barnes

Gyanesh P Khare

Dennis R Kidd

Donald Ray Engelbert

Bryan W Cass

Ronald E Miranda

Mark J LaCour

Amos A Avidan

Guido R Germana

Behzad Jazayeri

Manuel Hernandez

Rick Q Honaker

Christopher J Lafrancois

The current invention discloses a novel process and system to improve the quality of the slag product from a gasification process, thereby producing low-carbon marketable aggregate product. The inventive processes and systems employ a hindered-bed settler in conjunction with optional disengager and de-watering devices. A slag slurry stream from a gasification process is de-watered and the solids content is increased from less than 5% to greater than 30% via the de-waterer before being conveyed to a hindered-bed settler, wherein the carbon content is reduced from as much as 70% to less than 5%. Particles with a high carbon content are conveyed to a gravity settler, whereby they are concentrated and then recycled to the gasification reactor.

Methods and systems for treating a gasification slag product

The present invention relates to a system and process for gasifying feedstock such as carbonaceous materials. The invention includes partial combustion of dry solids and pyrolysis of carbonaceous material slurry in two separate reactor sections and produce mixture products comprising synthesis gas. The invention employs one or more catalytic or sorbent bed for removing tar from the synthesis gas. The inventive system and process allow a gasification to be carried out under higher slurry feeding rate and lower temperature with the provision to manage the tar being produced, therefore to increase the conversion efficiency of the overall gasification.

Two stage entrained gasification system and process

A system and process for gasifying carbonaceous feedstock with staged slurry addition in order to prevent the formation of tar that causes deposition problems. Dry solid carbonaceous material is partially combusted, then pyrolyzed along with a first slurry stream comprising carbonaceous material in two separate reactor sections, thereby producing mixture products comprising synthesis gas. The second slurry stream comprising particulate carbonaceous material is fed to a drying unit downstream of a heat recovery zone along with the mixture product exiting the heat recovery zone The resulting final temperature of the second stage mixture products and dried particulate carbonaceous material is between 450&#xb0; F. and 550&#xb0; F., a temperature range that is typically not conducive to the emission of heavy molecular-weight tar species.

Gasification system and process with staged slurry addition

A system and process for gasifying carbonaceous feedstock with staged slurry addition in order to prevent the formation of tar that causes deposition problems. Dry solid carbonaceous material is partially combusted, then pyrolyzed along with a first slurry stream comprising carbonaceous material in two separate reactor sections, thereby producing mixture products comprising synthesis gas. The second slurry stream comprising particulate carbonaceous material is fed to a drying unit downstream of a heat recovery zone along with the mixture product exiting the heat recovery zone. The resulting final temperature of the second stage mixture products and dried particulate carbonaceous material is between 450&#xb0; F. and 550&#xb0; F., a temperature range that is typically not conducive to the emission of heavy molecular-weight tar species.

An agglomerate removal device for removing agglomerated particles from a solids-containing stream. The agglomerate removal device can include an agglomerate capture device and an agglomerate withdrawal device. In one embodiment, the agglomerate removal device can be utilized in a process for desulfurizing gasoline or diesel streams in order to remove at least a portion of the agglomerated sorbent particles exiting the fluidized bed regenerator.

Agglomerate removal system

A hydrocarbon desulfurization system that circulates fluidizable solid particles through a fluidized bed reactor, a fluidized bed regenerator, and a fluidized bed reducer to thereby provide for substantially continuous desulfurization of a hydrocarbon-containing fluid stream and substantially continuous regeneration of the solid particles. A novel transport system is employed for transporting the solid particles between the reactor, the regenerator, and the reducer. The transport system uses close-coupled vessels and gravity flow between various vessels to minimize equipment cost and particle attrition.

Desulfurization process

A method and apparatus for removing sulfur from a hydrocarbon-containing fluid stream wherein desulfurization is enhanced by improving the contacting of the hydrocarbon-containing fluid stream and sulfur-sorbing solid particulates in a fluidized bed reactor.

Desulfurization system with enhanced fluid/solids contacting

Desulfurization in turbulent fluid bed reactor

A hydrocarbon desulfurization system employing regenerable solid sorbent particulates in a fluidized bed desulfurization reactor. The sulfur-loaded sorbent particulates are continuously withdrawn from the reactor and transferred to a regenerator. A novel solids transport mechanism provides for the safe and effective transfer of the sulfur-loaded sorbent particulates from the high pressure hydrocarbon environment of the reactor to the low pressure oxygen environment of the regenerator.

Desulfurization system with novel sorbent transfer mechanism

A system for enhancing fluid/solids contacting in a fluidization reactor by controlling the particle size distribution of the solid particulates in the reactor.

Enhanced fluid/solids contacting in a fluidization reactor

In a desulfurization process for the removal of organosulfur compounds from a hydrocarbon fluid stream such as cracked-gasoline or diesel fuel wherein a bifunctional sorbent system is employed, surface treatment of the bifunctional sorbent during the use of same for desulfurization results in an extension of the useful life of the bifunctional sorbent prior to the regeneration and reactivation of same for further use in the desulfurization of the hydrocarbon fluid stream.

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Sugar Land, TX, United States of America

Max W Thompson