Exxonmobil Research and Engineering Company

Exxonmobil Chemical Patents Inc.

Exxonmobil Technology and Engineering Company

Fuelcell Energy, Inc.

Timothy M Healy

Hossein Ghezel-Ayagh

Everett J O'Neal

Carla S Pereira

Lu Han

Rodrigo F Blanco Gutierrez

Rutton D Patel

Carl A Willman

Frank J Dobek, Jr

James Richardson Lattner

Frank Hershkowitz

James Harding Beech, Jr

Jonathan Miller

Jeffrey William Frederick

Michael Peter Nicoletti

Chunshe J Cao

Brenda Anne Raich

Eric B Shen

Christopher P Eppig

Bing Du

Clay R Sutton

Alvin U Chen

Fritz A Bernatz

Jesse Frederick Goellner

Ronald Suryo

Te-Hung Chen

John T Wyatt, Jr

Yi En Huang

Robert W Mosley

Scott F Massenzio

Len Lampert

E Nicholas Jones

Ying Liu

Zachary R Martin

Keith A Abel

John Theodore Wyatt

Len F Lampert

Zachary Robert Martin

Jesse F Goellner

Jr James H Beech

A reforming element for a molten carbonate fuel cell stack and corresponding methods are provided that can reduce or minimize temperature differences within the fuel cell stack when operating the fuel cell stack with enhanced COutilization. The reforming element can include at least one surface with a reforming catalyst deposited on the surface. A difference between the minimum and maximum reforming catalyst density and/or activity on a first portion of the at least one surface can be 20% to 75%, with the highest catalyst densities and/or activities being in proximity to the side of the fuel cell stack corresponding to at least one of the anode inlet and the cathode inlet.

Reforming catalyst pattern for fuel cell operated with enhanced COutilization

A fluid coking unit for converting a heavy oil feed to lower boiling products by thermal has a centrally-apertured annular baffle at the top of the stripping zone below the coking zone to inhibit recirculation of solid particles from the stripping zone to the coking zone. By inhibiting recirculation of the particles from the stripping zone to the coking zone, the temperatures of the two zones are effectively decoupled, enabling the coking zone to be run at a lower temperature than the stripping zone to increase the yield of liquid products.

Fluid bed coking process with decoupled coking zone and stripping zone

The invention relates mixer/flow distributors and their use, e.g., in regenerative reactors. The invention encompasses a process and apparatus for controlling oxidation, e.g., for thermally regenerating a reactor, such as a regenerative, reverse-flow reactor.

Mixer/flow distributors

A circulating fluid bed reactor such as that used in fluid coking processes has a circular dense bed reaction section above the reactor base where the fluidizing gas is injected and a plurality of frusto-conical baffles in the dense bed reaction section, each of which depends downwardly and radially inwards from the reactor wall to a lower, inner edge defining a central aperture. The baffles are preferably provided with downcomers which permit downward flow of solids and upward flow of gas through the baffles.

Circulating fluid bed reactor with improved circulation

This invention relates to efficiently regenerating catalyst particles by minimizing the formation of localized 'hot spots' and 'cold spots' in a regeneration zone. Specifically this invention relates to a method for controlling regenerator temperature in an oxygenates-to-olefins system, comprising the steps of: contacting an oxygenate feed in a reactor with a catalytically effective amount of molecular sieve-containing catalyst under conditions effective for converting said oxygenate to a product containing light olefins and forming a coked catalyst; contacting a portion of the coked catalyst in a regenerator, having a catalyst bed height (H), an inlet height (H), and an outlet height (H), with an oxygen-containing regeneration medium under conditions effective to at least partially regenerate the coked catalyst; and conducting a portion of the catalyst from the regenerator to a catalyst cooler to form a cooled catalyst portion, wherein His greater than H.

Method of circulating catalyst between a catalyst regenerator and an external catalyst cooler

Described herein are methods and mechanisms for laterally dispensing fluid to a coke drum in a predictable and maintainable manner that alleviates thermal stress. In one embodiment, the methods and mechanisms utilize a split piping system to dispense fluid through two or more inlets into a spool that is connected to a coke drum and a coke drum bottom deheader valve. A combination of block valves and clean out ports provides a more effective means to clean the lines and allows fluid to be laterally dispensed in a controllable and predictable manner. The fluid is preferably introduced to the spool in opposing directions toward a central vertical axis of the spool at equal but opposing angles ranging from minus thirty (&#x2212;30) to thirty (30) degrees relative to a horizontal line laterally bisecting the spool. Alternatively, however, fluid can be introduced to the spool tangentially.

Coker feed method and apparatus

Growing community of inventors

Centreville, VA, United States of America

Timothy M Healy