Exxonmobil Technology and Engineering Company

Exxonmobil Research and Engineering Company

Lehigh University

Auxilium Green, LLC

Hugo S Caram

Ramesh Gupta

David C Dankworth

Sumathy Raman

Simon Christopher Weston

Hans Thomann

Scott Jeffrey Weigel

Narasimhan Sundaram

Franklin F Mittricker

Loren K Starcher

Mobae Afeworki

Bhupender S Minhas

Hilda B Vroman

Anjaneya Sarma Kovvali

Alberto I LaCava

Divyanshu R Acharya

Richard G Herman

Meghan Nines

Manoj Kumar Chaudhury

Ranjan K Sahoo

Amrit Jalan

Manoj K Chaudhury

Simon C Weston

Systems and methods are provided for conversion of methane and/or other hydrocarbons to hydrogen by pyrolysis while reducing or minimizing production of carbon oxides. The conversion of hydrocarbons to hydrogen is performed in one or more pyrolysis or conversion reactors that contain a plurality of sequential fluidized beds. The fluidized beds are arranged so that the coke particles forming the fluidized bed move in a counter-current direction relative to the gas phase flow of feed (e.g., methane) and/or product (H) in the fluidized beds. By using a plurality of sequential fluidized beds, the heat transfer and management benefits of fluidized beds can be realized while also at least partially achieving the improved reaction rates that are associated with a plug flow or moving bed reactor.

Methane pyrolysis using stacked fluidized beds

Systems and methods are provided for production of carbon nanotubes and Husing a reaction system configuration that is suitable for large scale production. In the reaction system, a substantial portion of the heat for the reaction can be provided by using a heated gas stream. Optionally, the heated gas stream can correspond to a heated Hgas stream. By using a heated gas stream, when the catalyst precursors for the floating catalyst-chemical vapor deposition (FC-CVD) type catalyst are added to the gas stream, the gas stream can be at a temperature of 1000&#xb0; C. or more. This can reduce or minimize loss of catalyst precursor material and/or deposition of coke on sidewalls of the reactor. Additionally, a downstream portion of the reactor can include a plurality of flow channels of reduced size that are passed through a heat exchanger environment, such as a shell and tube heat exchanger. This can provide cooling of the gas flow after catalyst formation to allow for carbon nanotube formation, while also reducing the Reynolds number of the flow sufficiently to provide laminar flow within the region where carbon nanotubes are formed.

Reactor for carbon nanotube and nanofiber production

Systems and methods for molten media pyrolysis for the conversion of methane into hydrogen and carbon-containing particles are disclosed. The systems and methods include the introduction of seed particles into the molten media to facilitate the growth of larger, more manageable carbon-containing particles. Additionally or alternatively, the systems and methods can include increasing the residence time of carbon-containing particles within the molten media to facilitate the growth of larger carbon-containing particles.

Systems and processes for molten media pyrolysis

Systems and methods are provided for combined cycle power generation while reducing or mitigating emissions during power generation. Recycled exhaust gas from a power generation combustion reaction can be separated using a swing adsorption process so as to generate a high purity COstream while reducing/minimizing the energy required for the separation and without having to reduce the temperature of the exhaust gas. This can allow for improved energy recovery while also generating high purity streams of carbon dioxide and nitrogen.

Integration of pressure swing adsorption with a power plant for COcapture/utilization and Nproduction

A heat transfer fluid can be used as part of a multi-phase adsorption environment to allow for improved separations of gas components using a solid adsorbent. The heat transfer fluid can reduce or minimize the temperature increase of the solid adsorbent that occurs during an adsorption cycle. Reducing or minimizing such a temperature increase can enhance the working capacity for an adsorbent and/or enable the use of adsorbents that are not practical for commercial scale adsorption using conventional adsorption methods. The multi-phase adsorption environment can correspond to a trickle bed environment, a slurry environment, or another convenient environment where at least a partial liquid phase of a heat transfer fluid is present during gas adsorption by a solid adsorbent.

Cyclic thermal swing adsorption with direct heat transfer

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A catalyst composition includes an active material having a molybdenum- and sulfur-containing substance impregnated with an effective amount of cesium sufficient to promote synthesis of an alcohol, optionally carried on an inert support, wherein the active material is at least substantially free of a transition metal. The present invention is further directed to methods of preparing and using the same.

Catalyst composition formulated for synthesis of alcohols and method of preparing the same

Provided herein are methods and apparatus for capturing or otherwise decreasing the amount of COin an exhaust stream. The separation process for removing COfrom a waste stream preferably operates substantially at atmospheric pressure and at a preselected temperature, and without the need of thermal swing regeneration. This novel elimination of the heat up and cool down periods allows the inventive cycle herein to be run faster, and more efficiently than in previously known systems. Further, in some examples herein, the heat of adsorption is used to provide the heat of regeneration.

Growing community of inventors

Allentown, PA, United States of America

Hugo S Caram