Rohm and Haas Company

Anellotech, Inc.

Lummus Technology Inc.

Other

Ruozhi Song

Anne Mae Gaffney

Michele Heffner

Scott S Han

Sanjay Chaturvedi

Terry Joseph Mazanec

Chuen Yuan Yeh

Yu-Ting Cheng

Elsie Mae Vickery

Stephen Craig Arnold

Leonard Edward Bogan, Jr

Charles Sorensen

Tadeusz W Langner

Fred A Pesa

Marc E Schneidkraut

Sandeep Goud

William F Igoe, Jr

Victoria L Frank

Jian Shi

Philip Jay Angevine

Donald Lee Zolotorofe

Johannes Hendrik Koegler

Dominique Hung Nhu Le

Charles Mitchel Sorensen

Jeffrey P Whiting

Eugene Schmelzer

Collin Schmidt

Lawrence John Karas

Ruma Ghosh

Dennis McCullough

Zachary W Goodman

Marvin I Greene

Arvids Judzis, Jr

Fernando Antonio Pessoa Cavalcanti

Marshall J Margolis

Megan Wagner

Kevin Dolan

Scott Johnstone

Michele Doreen Heffner

The present invention provides an improved catalytic fast pyrolysis process for increased yield of useful and desirable products. In particular, the process comprises an improved catalytic fast pyrolysis process for producing aromatic compounds, such as, for example, benzene, toluene and xylenes, from biomass feedstock containing impurities, such as, for example alkali and alkaline earth metal, sulfur and nitrogen components.

Catalytic fast pyrolysis process with impurity removal

Methods of separating and purifying products from the catalytic fast pyrolysis of biomass are described. In a preferred method, a portion of the products from a pyrolysis reactor are recovered and purified using a hydrotreating step that reduces the content of sulfur, nitrogen, and oxygen components, and hydrogenates olefins to produce aromatic products that meet commercial quality specifications.

Processes for converting biomass to BTX with low sulfur, nitrogen and olefin content via a catalytic fast pyrolysis process

A catalyst that is used in the catalytic pyrolysis of biomass is regenerated by oxidation and washing with a liquid to remove minerals and restore catalyst activity and selectivity to aromatics.

Regeneration of catalytic fast pyrolysis catalyst

Methods and systems utilizing gas jets to carry biomass into a biomass conversion reactor are described. Reactor configurations and conditions for carrying out processes utilizing the gas jets are also described. The use of gas jets has been found to be especially desirable for operation with pyrolysis of biomass in catalytic fluidized bed reactors.

Gas jet injector reactor for catalytic fast pyrolysis process

The present invention provides an improved catalytic fast pyrolysis process for increased yield of useful and desirable products, while greatly reducing or eliminating fouling of various critical process lines which are likely to transfer heavy hydrocarbons, aromatics and oxygenates. The process comprises steps including feeding a fluid solvent stream having a Snyder Polarity Index of at least 2.4 to one or more of i) the raw fluid product stream from a catalytic fast pyrolysis process fluidized bed reactor to a first separation system, ii) the fluid product stream from the first separation system to a quench vapor/liquid separation system, iii) the vapor phase stream from the quench vapor/liquid separation system to a product recovery system, and, optionally, to the spent catalyst steam stripping system upstream of the catalyst regeneration system.

Catalytic fast pyrolysis process

A process for the production of jet and other heavy fuels from alcohols and mixture of alcohols is disclosed. The process may include contacting in a reaction zone at least one C2 to C11 alcohol with a solid catalyst having activity for the simultaneous dehydration of the alcohols to form olefins, isomerization of the olefins to form internal olefins, and oligomerization of the olefins produced in situ via the dehydration reaction to form an effluent comprising mono-olefinic hydrocarbons. Preferably, the alcohol feed is a mixture of alcohols, such as C2 to C7 alcohols or C4 and C6 alcohols, enabling the production of a mixture of branched hydrocarbons that may be used directly as a jet fuel without blending.

Conversion of alcohols to distillate fuels

In this invention, a portion of the products from a pyrolysis reactor are reacted in a process to form one or more chemical intermediates.

Chemical intermediates by catalytic fast pyrolysis process

Processes are provided for the production of butadiene from Ccontaining feed stocks that contain isobutene and/or isobutane in addition to n-butene(s) and/or n-butane. The processes of the present invention generally comprise feeding the feed stock to a combination butenes isomerization reaction and distillation tower for conversion of 1-butene to 2-butenes and separation from isobutene and isobutane, followed by an oxydehydrogenation unit to convert n-butenes to butadiene. The processes may also include additional isomerization and/or dehydrogenation steps for the tower overhead and bottoms streams to create additional isobutene and/or n-butenes for valued/uses, which may include additional production of butadiene. The feed to the system may comprise any mixture or separate feeding of Colefins and Cparaffins, at least one of which contains isobutene and/or isobutane.

Process for the production of butadiene

Processes for using a combination of carbon dioxide and oxygen in the dehydrogenation of hydrocarbons are provided. A hydrocarbon feedstock, carbon dioxide and oxygen are fed to an oxidative dehydrogenation reactor system containing one or more catalysts that promote dehydrogenation of the hydrocarbon feedstock to produce a dehydrogenated hydrocarbon product. The processes of the present invention may be used, for example, to produce styrene monomer by dehydrogenation of ethylbenzene using carbon dioxide and oxygen as oxidants.

Combined carbon dioxide and oxygen process for ethylbenzene dehydrogenation to styrene

A process for the oxidative dehydrogenation of ethane is disclosed. The process may include: contacting an ethane feed and an oxygen-containing gas in the presence of an oxidative dehydrogenation catalyst in an oxidative dehydrogenation reaction zone under conditions to oxidatively dehydrogenate at least a portion of the ethane to produce a product stream comprising ethylene, carbon oxides, water, and unreacted oxygen and ethane, wherein an oxygen concentration in the product stream is at least 0.1 mol %; contacting the product stream with an oxygen elimination catalyst in an oxygen elimination reaction zone to combust at least a portion of the oxygen; recovering from the oxygen elimination reaction zone an effluent having a reduced oxygen content; separating water from the effluent; separating carbon oxides and any non-condensable gas(es) from the ethylene and the unreacted ethane; and separating the ethylene from the unreacted ethane.

Process for producing ethylene via oxidative dehydrogenation (ODH) of ethane

A catalyst useful for the alkylation or transalkylation of aromatic compounds is disclosed. The catalyst is an acid-treated zeolitic catalyst produced by a process including contacting an acidic zeolitic catalyst comprising surface non-framework aluminum and framework aluminum with an organic dibasic acid at a catalyst to acid weight ratio in the range from about 2:1 to about 20:1 and at a temperature in the range from about 50&#xb0; C. to about 100&#xb0; C. to selectively remove at least a portion of the surface non-framework aluminum. The resulting catalyst may have a measured first-order rate constant, k, for the alkylation of benzene with propylene to form cumene, of at least 2.0 cm/s g.

Catalysts useful for the alkylation of aromatic hydrocarbons

Growing community of inventors

Wilmington, DE, United States of America

Ruozhi Song