Chevron U.s.a. Inc.

Steven Xuqi Song

Krishniah Parimi

Bi-Zeng Zhan

Abdenour Kemoun

Yaofan Yi

Steve Souers

Zackory Akin

Craig Boyak

Trenton J Otto

Bruce Edward Reynolds

Charles Kibby

Daniel Chinn

Michael John Girgis

Moinuddin Ahmed

Donald Kuehne

Thien Duyen Thi Nguyen

Ralph Evans Killen

Zackory S Akin

Steven Alden Souers

Timothy D Breig

Babak Fayyaz Najafi

Ralph Evan Killen

Christopher Declan Lane

Donald L Kuehne

Adbenour Kemoun

Methods for dehydrogenation of perhydro-benzyltoluene are described. The representative two stage reaction processes described herein provide cost-effective high amount of conversion to hydrogen and/or other beneficial products.

Methods for dehydrogenation of perhydro-benzyltoluene

The present disclosure refers to systems and methods for the production, storage, and transportation of hydrogen. In a representative embodiment a reactor system comprises a fluidized bed combustor configured for reduced metal oxide oxidation and heat generation without significant greenhouse gas emission and/or with readily capturable emissions. The reactor system also comprises a liquid organic hydrogen carrier dehydrogenation reactor. The fluidized bed combustor is operatively coupled to the liquid organic hydrogen carrier dehydrogenation reactor. Advantageously, at least a portion of heat generated by the fluidized bed combustor may be transferred to the liquid organic hydrogen carrier dehydrogenation reactor. In this manner hydrogen production and transportation is both energy efficient, low carbon intensity and cost-effective.

Systems and methods for production, storage, and transportation of hydrogen

The present disclosure refers in one embodiment to processes for making and transporting clean hydrogen fuel. The processes may involve hydrotreating, hydrocracking, or both hydrotreating and hydrocracking an aromatic feedstock under conditions to obtain a liquid hydrocarbon fuel. The liquid hydrocarbon fuel is hydrogenated to obtain a hydrogen-rich fuel that is transported to a dehydrogenation facility that may also be at or near a hydrogen station. The hydrogen-rich fuel is used to obtain hydrogen and a second liquid hydrocarbon fuel.

Clean liquid fuels hydrogen carrier processes

An improved nozzle device for a down-flow hydroprocessing reactor is disclosed. The down-flow nozzle is useful in the petroleum and chemical processing industries in catalytic reactions of hydrocarbon feedstocks in the presence of hydrogen, at an elevated temperature and pressure, to provide for the mixing and distribution of gas and liquid to reactor catalyst beds. Typical hydroprocessing applications include hydrotreating, hydrofinishing, hydrocracking and hydrodewaxing.

Nozzle for a down-flow hydroprocessing reactor

An apparatus is disclosed for the hydroconversion of hydrocarbon feedstock with a hydrogen gas at elevated temperature and pressure with the use of a catalyst. The apparatus is a reactor vessel with a grid plate distributor for improved gas liquid distribution. The distributor comprises a grid plate and a bubble cap assembly with a plurality of tubular risers extending through the grid plate. Each tubular riser has an upper section above the grid plate and a lower section below the grid plate, the lower section terminated with an open bottom end for ingress of the hydrogen gas and hydrocarbon feedstock, the upper section having a closed top terminated with a housing cap. Each tubular riser has at least a vertical slot and a least a laterally placed opening sufficiently sized such that in operation, the liquid level in the zone below the grid plate is above the vertical slot and below the laterally placed opening.

Apparatus and method for hydroconversion

The present invention is directed to a vortex-type mixing device for a down-flow hydroprocessing reactor. In particular, the device improves the effectiveness of an existing mixing volume in mixing the gas phase and liquid phase of two-phase systems. According to the present invention, the mixing device helps create a highly arcuate flow to incoming effluents and a high degree of mixing within a constrained interbed space of a hydroprocessing reactor.

Vortex-type mixing device for a down-flow hydroprocessing reactor

Systems, apparatus, and methods for distributing a mixed phase fluid to a monolith catalyst bed within a reactor, wherein a mixed phase fluid may be generated by a nozzle tray comprising a plurality of nozzles, the mixed phase fluid may be distributed by the nozzles to a mixed phase distributor system, and the mixed phase fluid may be further distributed by the mixed phase distributor system to a plurality of monolith channels within the reactor.

Flow distribution for monolithic reactors

Systems and apparatus for mixing, cooling, and distributing multiphase fluid mixtures within a reactor, wherein reactor internal apparatus of the present invention provides not only improved fluid mixing and distribution to each underlying catalyst bed surface, but also offers other advantages including: decreased mixing tray height; easier maintenance, assembly and disassembly; and decreased amounts of fabrication material. In an embodiment, fluid may be evenly distributed to a catalyst bed from a fluid distribution unit comprising a nozzle tray including a plurality of nozzles, wherein the nozzles include at least one liquid inlet disposed tangentially to an inner surface of the nozzle.

Multiphase contact and distribution apparatus for hydroprocessing

A fixed bed membrane reactor is disclosed. The reactor has a housing including an inlet for receiving reactants and an outlet for discharging retentate streams of reaction products. The inlet and outlet are in fluid communication with a reaction zone in which the reactants may pass downstream from the inlet to the outlet with the reactants reacting to produce reaction products including water. The reactor further includes a membrane assembly disposed in fluid communication with the reaction zone. The membrane assembly includes at least one porous support with a water permselective membrane affixed thereto. The membrane allows water produced in the reaction zone to be selectively removed from the reaction zone as a permeate stream while allowing retentate reaction products to remain in the reaction zone and be discharged as a retentate stream. Ideally, the membrane assembly locates most of the membrane proximate the downstream portion of the reaction zone where accumulated produced water may be selectively removed from the reaction product as opposed to the upstream portion where relatively little water accumulation has occurred. A method for using the reactor to perform in situ water dehydration of reactions, such as Fischer-Tropsch reaction, is also disclosed.

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Albany, CA, United States of America

Steven Xuqi Song