Exxonmobil Technology and Engineering Company

Fuelcell Energy, Inc.

Exxonmobil Research and Engineering Company

Exxonmobil Chemical Patents Inc.

Lu Han

Frank Hershkowitz

Mark Paul Hagemeister

Michael F Raterman

Lawrence J Novacco

Mohsen N Harandi

James Richardson Lattner

Roby Bearden, Jr

Samuel A Tabak

William C Baird, Jr

Daniel Paul Leta

Stephen John McCarthy

David L Johnson

Robert G Tinger

Jonathan Martin McConnachie

Everett J O'Neal

Hossein Ghezel-Ayagh

James Ronald Bielenberg

Carla S Pereira

Brandon J O'Neill

Christopher Gordon Smalley

Rathna P Davuluri

Walter David Vann

Terry Eugene Helton

Gabor Kiss

Mark Alan Greaney

Chao-yi Yuh

John Di-Yi Ou

Timothy Andrew Barckholtz

Leo D Brown

Anjaneya Sarma Kovvali

Keith E Davis

Clay R Sutton

Rodrigo F Blanco Gutierrez

Carl A Willman

Paul J Rubas

Eric B Shen

Bing Du

Jon Edmond Randolph Stanat

Timothy M Healy

Jorge L Soto

Mitch L Hindman

Masaaki Sugita

Zhongcheng Wang

Frank J Dobek, Jr

Thomas M Smith

Abdelkader Hilmi

Rohit Vijay

Timothy Paul Bender

Brett Thomas Loveless

Paul D Oldenburg

Xiaobo Zheng

Samia Ilias

Heather A Elsen

Timothy C Geary

Jonathan Rosen

Sandipan K Das

Brian C Speirs

Joseph S Famolaro

Thomas R Palmer

Andrea P Wight

Christopher Howard

Yesim Igci

Olusola B Adeyinka

Brian Bullecks

Frank J Dobek

Fritz Pierre

Stephen J Mccarthy

Chao-Yi Yuh

Brett Loveless

David C Rennard

Emilio Alvarez

Samia Illias

Christopher G Smalley

Cathode collector structures and/or corresponding cathode structures are provided that can allow for improved operation for a molten carbonate fuel cell when operated under conditions for elevated COutilization. A cathode collector structure that provides an increased open area at the cathode surface can reduce or minimize the amount of alternative ion transport that occurs within the fuel cell. Additionally or alternately, grooves in the cathode surface can be used to increase the open area.

Cathode collector structures for molten carbonate fuel cell

A module assembly is provided including a fuel cell stack assembly, a heat exchanger, and a housing enclosing the fuel cell stack assembly and the heat exchanger. The heat exchanger is configured to receive process gas from an external source and output the process gas to the fuel cell stack assembly, and configured to receive process gas from the fuel cell stack assembly and output the process gas. A fuel cell power plant is provided including a module assembly with a first end, a racking structure configured to hold the module assembly, balance of plant equipment, and ducting configured to provide fluid communication between the balance of plant equipment and the first end of the module assembly. The module assembly and the racking structure are configured such that the module assembly may be removed from the racking structure in a direction away from the first end of the module assembly.

Fuel cell power plant with a racked fuel cell module

A fuel cell is provided including an anode configured to receive, and allow to pass through, an anode process gas, a cathode configured to receive, and allow to pass through, a cathode process gas, and an electrolyte matrix layer separating the anode and the cathode. One of the anode or the cathode has an extended edge seal chamber, and the fuel cell is configured to receive the anode process gas and the cathode process gas in substantially perpendicular directions relative to each other, and the extended edge seal chamber is configured to allow the anode process gas and the cathode process gas to pass through the anode and the cathode in substantially parallel flow paths.

Fuel cell assembly with external manifold for parallel flow

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

Molten carbonate fuel cell configurations are provided that allow for introduction of an anode input gas flow on a side of the fuel cell that is adjacent to the entry side for the cathode input gas flow while allowing the anode and cathode to operate under co-current flow and/or counter-current flow conditions. It has been discovered that improved flow properties can be achieved within the anode or cathode during co-current flow or counter-current flow operation by diverting the input flow for the anode or cathode into an extended edge seal region (in an extended edge seal chamber) adjacent to the active area of the anode or cathode, and then using a baffle to provide sufficient pressure drop for even flow distribution of the anode input flow across the anode or cathode input flow across the cathode. A second baffle can be used to create a pressure drop as the anode output flow or cathode output flow exits from the active area into a second extended edge seal region (in a second extended edge seal chamber) prior to leaving the fuel cell.

Flow baffle for molten carbonate fuel cell

A module assembly is provided including a fuel cell stack assembly, a heat exchanger, and a housing enclosing the fuel cell stack assembly and the heat exchanger. The heat exchanger is configured to receive process gas from an external source and output said process gas to the fuel cell stack assembly, and configured to receive process gas from the fuel cell stack assembly and output said process gas. A fuel cell power plant is provided including a module assembly with a first end, a racking structure configured to hold the module assembly, balance of plant equipment, and ducting configured to provide fluid communication between the balance of plant equipment and the first end of the module assembly. The module assembly and the racking structure are configured such that the module assembly may be removed from the racking structure in a direction away from the first end of the module assembly.

Fuel cell module assembly and systems using same

Apparatuses and processes for converting an oxygenate feedstock, such as methanol and/or dimethyl ether, in a fluidized bed containing a catalyst to hydrocarbons, such as gasoline boiling components, olefins and aromatics are provided herein.

Apparatus and process for producing gasoline, olefins and aromatics from oxygenates

Apparatuses and processes for converting an oxygenate feedstock, such as methanol and dimethyl ether, in a fluidized bed containing a catalyst to hydrocarbons, such as gasoline boiling components, olefins and aromatics are provided herein.

In a process for producing para-xylene, benzene and/or toluene is alkylated with methanol in the presence of a catalyst under conditions including a temperature of at least 500&#xb0; C. and an HO partial pressure of at least 12 psia (83 kPaa). The catalyst comprises from 5 to 15 wt % ZSM-5, phosphorus or a compound thereof and a binder and has been steamed at a temperature of at least 900&#xb0; C. The steamed catalyst has no more than two peaks in theP MAS NMR spectrum in the range of 0 to &#x2212;50 ppm.

Production of para-xylene

The invention relates to a process of alkylating aromatic hydrocarbons, and more particularly a process of making paraxylene by alkylation of benzene and/or toluene with methanol and/or dimethyl ether, and to an apparatus for carrying out said process, the improvement comprising staged injection of one of the reactants, with the stages separated by structured packing so as to minimize at least one of gas phase back-mixing, by-pass phenomena, and gas bubble size.

Fluid bed reactor with staged baffles

Hydrocarbon feedstreams are desulfurized using an alkali metal reagent, optionally in the presence of hydrogen. Improved control over reaction conditions can be achieved in part by controlling the particle size of the alkali metal salt and by using multiple desulfurization reactors. After separation of the spent alkali metal reagent, the resulting product can have suitable characteristics for pipeline transport and/or further refinery processing.

Desulfurization process using alkali metal reagent

After desulfurizing a hydrocarbon feedstream using an alkali metal reagent, the hydrocarbon feedstream can include particles of spent alkali metal salts. The spent alkali metal salts can be separated from the hydrocarbon feedstream and regenerated to form an alkali metal reagent, such as a alkali hydroxide or alkali sulfide. The regeneration process can pass through an intermediate stage of forming an alkali carbonate by successive reactions with carbon dioxide and calcium oxide. The calcium oxide can also be regenerated.

Regeneration of alkali metal reagent

In a process for the production of para-xylene, an aromatic feedstock comprising toluene and/or benzene is reacted with methanol under alkylation conditions in a reactor in the presence of a fluidized bed of solid catalyst particles to produce a vapor phase effluent comprising para-xylene, water, unreacted toluene and/or benzene and solid catalyst fines. The vapor phase effluent is contacted with a liquid hydrocarbon quench stream under conditions to condense a minor portion of the vapor phase effluent and produce a condensate which contains at least some of the catalyst fines and which is substantially free of an aqueous phase. The condensate containing said catalyst fines is then separated from the remainder of the vapor phase effluent.

Production of para-xylene by the methylation of benzene and/or toluene

In a process for the production of para-xylene, methanol is preheated to a first temperature, an aromatic feedstock comprising toluene and/or benzene is preheated to a second temperature and the preheated methanol and aromatic feedstocks are fed to a reactor at a first methanol to aromatic feedstock molar ratio. The preheated aromatic feedstock is contacted with the preheated methanol under alkylation conditions in the reactor in the presence of a catalyst so that the methanol reacts with the aromatic feedstock to produce an effluent comprising para-xylene. During the reaction, a temperature is measured within the reactor and is compared with a predetermined optimal temperature. The methanol to aromatic feedstock molar ratio is then adjusted in a manner to reduce any difference between the measured and predetermined optimal temperatures in the reactor.

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Herndon, VA, United States of America

Lu Han