Ecocatalytic Inc.

Dow Global Technolgoies LLC

Elena Y Chung

John A Sofranko

C Andrew Jones

William K Wang

Royce Macwan

Matthew T Pretz

Barry B Fish

Hangyao Wang

Soumen Kundu

A process for oxidative dehydrogenation of a hydrocarbon to produce an olefin and water may include contacting, in a fluidized bed, the hydrocarbon with a particulate material, which may include at least one oxygen transfer agent (OTA) and at least one fluidization enhancing additive. During at least a portion of contacting the hydrocarbon with the particulate material, the fluidized bed may be at a temperature at or above a melting point of one or more materials of the oxygen transfer agent. Further, during at least a portion of contacting the hydrocarbon with the particulate material, a surface of at least a portion of the OTA may comprise a molten layer. The fluidization enhancing additive may not undergo reduction in the fluidized bed during contacting the hydrocarbon with the particulate material and may be present in an amount that maintains sufficient fluidization of the particulate material.

Fluidization enhancers for the oxidative dehydrogenation of hydrocarbons

Enhanced oxygen transfer agent systems and methods of use thereof are provided. According to one aspect, a method for producing olefins from a hydrocarbon feed includes the step of contacting a hydrocarbon feed comprised of one or more alkanes with an oxygen transfer agent at a temperature of 350&#xb0; C. to 1000&#xb0; C. The oxygen transfer agent includes an oxygen-donating chalcogen agent including at least one of S, Se, or Te and a reducible metal oxide. The chalcogen has an oxidation state greater than +2. A method for producing one or more olefins by partial combustion of a hydrocarbon feed is provided. The method includes partially combusting a hydrocarbon feed comprised of one or more alkanes by contacting the hydrocarbon feed with an oxygen transfer agent comprising CaSOat a temperature of 350&#xb0; C. to 1000&#xb0; C. to produce one or more olefins comprising ethylene and coproducing water.

Enhanced oxygen transfer agent systems for oxidative dehydrogenation of hydrocarbons

A method is provided for producing at least one olefin by oxidative dehydrogenation of a hydrocarbon feed. The method includes the steps of contacting a hydrocarbon feed, which includes at least one alkane, and a steam feed with an oxygen transfer agent under a pressure of 1.1 bar to 800 bar to produce at least one olefin. The oxygen transfer agent contains a metal oxide that acts as an oxidizing agent to oxidize the at least one alkane. Additionally, the method includes the step of collecting a product stream containing the at least one olefin.

Methods and systems for oxidative dehydrogenation of hydrocarbons to olefins

Aspects of the invention relate to producing olefins and other products by oxidative dehydrogenation cracking of a hydrocarbon feed. In one embodiment, the method includes oxidative cracking a hydrocarbon feed comprised of plastic waste. Methods of the present invention employ dual functional catalyst comprising solid acids and metal oxides, which are capable of selectively oxidizing hydrogen to water rather than combustion of the hydrocarbon feeds or products. Additional aspects of the invention demonstrate catalyst synthetic methods for encapsulating metal oxides in the internal channels and cages of solid acids, thereby improving the selective oxidation of hydrogen to water and decreasing feed and product oxidation. The re-oxidation of the thus reduced metal oxide transfer agents supplies heat to drive the endothermic cracking of the feed.

Oxidative cracking of hydrocarbons

A system for oxidative conversion of a mixed hydrocarbon feed stream to a product stream containing at least one olefin is provided. The system includes a plurality of reactors each capable of oxidatively dehydrogenating at least a portion of a hydrocarbon in the mixed hydrocarbon feed, and each reactor able to operate at different set of reaction conditions from other reactors in the plurality of reactors. All of the reactors use the same oxygen transfer agent to produce at least one olefin. In some embodiments, at least one reactor is optimized to oxidatively couple methane to produce ethylene, while other reactors are optimized to oxidatively dehydrogenate ethane to ethylene or to oxidatively dehydrogenate propane to ethylene and/or propylene. All of the reactors feed into a single regeneration unit for the oxygen transfer agent. A method of oxidatively converting the mixed hydrocarbon feed to an olefin is also provided.

Reactor for oxidative conversion of hydrocarbon feeds

Aspects of the invention relate to enhanced oxygen transfer agent systems and methods of use thereof. According to one aspect, a method for producing olefins from a hydrocarbon feed includes the step of contacting a hydrocarbon feed comprised of one or more alkanes with an oxygen transfer agent at a temperature of 350&#xb0; C. to 1000&#xb0; C. The oxygen transfer agent comprising an oxygen-donating chalcogen agent comprised of at least one of S, Se, or Te and a reducible metal oxide. The chalcogen having an oxidation state greater than +2. According to another aspect, a method for producing one or more olefins by partial combustion of a hydrocarbon feed includes partially combusting a hydrocarbon feed comprised of one or more alkanes by contacting the hydrocarbon feed with an oxygen transfer agent comprising CaS0at a temperature of 350&#xb0; C. to 1000&#xb0; C. to produce one or more olefins comprising ethylene and coproducing water.

Aspects of the invention relate to producing olefins by oxidative dehydrogenation cocracking of a hydrocarbon feed. In one embodiment, the method includes oxidative cocracking a hydrocarbon feed comprised of at least one alkane having a carbon chain of five or more and at least one alkane having a carbon chain of four or less by contacting the hydrocarbon feed with a metal oxide, such that the cracking of the at least one alkane having a carbon chain of four or less produces olefins and is exothermic, and the cracking of the at least one alkane having a carbon chain of five or more produces olefins and is endothermic. The method further includes utilizing the energy produced from the exothermic cracking of the alkane having a carbon chain of four or less for the endothermic cracking of the alkane having a carbon chain of five or more, and collecting the product.

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Somerville, MA, United States of America

Elena Y Chung