Uop Lcc

Other

Sni S.p.a.

David A Wegerer

Mark D Moser

Kurt M VandenBussche

Manuela Serban

Gautam Pandey

Kurt M Vanden Bussche

Gregory J Gajda

Bradley P Russell

Stephen R Dunne

David A Lomas

Gavin Paul Towler

Charles P Luebke

Antoine Negiz

Clayton Colin Sadler

Trung S Pham

Hari S Bajpai

Wim Frans Elseviers

Paul Alvin Sechrist

Bipin Virpal Vora

John Joseph Senetar

Mark Paul Lapinski

Donald A Eizenga

Joseph Edward Zimmermann

Mary Jo Wier

Kurt A Detrick

Ashish Mathur

Keyur Y Pandya

Paolo Palmas

Michael A Schultz

Xin X Zhu

Robert J Schmidt

Robert L Mehlberg

Brian W Hedrick

Laura Elise Leonard

Daniel N Myers

Ian G Horn

Susie C Martins

James W Harris

Gregory R Werba

Avram Michael Buchbinder

Douglas A Nafis

Matthew Lippmann

Michael Van De Cotte

William Yanez

Ka Leung Lok

Todd M Kruse

Bryan James Egolf

Zhihao Fei

Jeffrey R Grott

Elizabeth Carter

Eric Leeton

James T Wexler

Praneeth Dayanthe Edirisinghe

Nathan A Siedler

Stephen M Casey

Kurt Vanden Bussche

Margaret A Stine

Parag Jain

Nicholas M Brom

Kevin C Buck

Rafael Alcala

The process produces a diesel stream from a biorenewable feedstock by hydrotreating to remove heteroatoms and saturate olefins. The recycle gas is recycled to the hydrotreating reactor without removing hydrogen sulfide, which is needed in the biorenewable feed to keep the hydrotreating catalyst active. A purification unit can be utilized on a purge gas stream to purify the gas and improve hydrogen concentration in the recycle gas when added to the recycle gas.

Process for producing diesel fuel from a biorenewable feed with recycled sulfur

The process removes hydrogen sulfide from hydrotreated gas by TSA. Hydrogen sulfide adsorbs on the adsorbent while allowing hydrogen in the hydrotreated gas to pass the adsorbent to provide a desulfided hydrogen gas stream and a sulfided adsorbent. A regenerant gas stream can be contacted with the sulfided adsorbent at a swing temperature to desorb hydrogen sulfide from the adsorbent into the regenerant gas stream. The regenerant gas stream can then be recycled to a hydrotreating reactor for processing biorenewable feed to provide hydrogen sulfide to the reactor. The desulfided gas stream can be purified to remove impurities such as carbon oxides and recycled to the hydrotreating reactor and/or used as the regenerant gas stream.

Process for producing diesel fuel from a biorenewable feed with recycled sulfur from temperature swing adsorption regenerant

Process of treating a net gas stream is disclosed. The process includes sending the net gas stream to a compressor to produce a compressed gas stream. The compressed gas stream is then sent to a pressure swing adsorption unit to produce a hydrogen product stream and a tail gas stream. Tail gas stream from the pressure swing adsorption unit is sent to a first membrane unit to produce a first permeate stream and a first non-permeate stream. Portion of the tail gas stream is sent to a second membrane unit to produce a second permeate stream and a second non-permeate stream.

Membrane permeate recycle process for use with pressure swing adsorption processes

A process for producing acetylene, ethylene, or both is disclosed. The process includes combusting a fuel stream to produce a combustion gas effluent stream and pyrolyzing a feed stream in a pyrolysis zone in the presence of the combustion gas effluent stream to produce a pyrolysis zone effluent stream which is further quenched and compressed. The compressed quenched stream is separated in a solvent separation column to produce a net gas stream comprising hydrogen, methane, and at least one carbon oxide and a product stream. A portion of the carbon oxide of the net gas stream is converted into methane in a methanation reactor and a reactor effluent stream is sent to an amine scrubber where carbon dioxide is removed and a methane containing stream is generated as an effluent. The methane containing stream is then recycled to the pyrolysis zone of the supersonic reactor.

Process for producing acetylene and ethylene

A system that is used for the treatment of a net gas stream is disclosed. The system includes a compressor to produce a compressed gas stream from a net gas stream. The compressor is connected to a pressure swing adsorption unit where the net gas stream is separated to produce a hydrogen product stream and a tail gas stream. Tail gas stream from the pressure swing adsorption unit is sent to a first membrane unit to produce a first permeate stream and a first non-permeate stream. A portion of the tail gas stream is sent to a second membrane unit to produce a second permeate stream and a second non-permeate stream.

Membrane permeate recycle system for use with pressure swing adsorption apparatus

The invention provides a process for producing hydrogen for a hydrogen consuming process comprising obtaining a net gas stream containing hydrogen, compressing the gas stream to a pressure of 20.7 to 68.9 bar (300 to 1000 psig) to produce a compressed gas stream; sending the compressed gas stream to a pressure swing adsorption unit to be separated into a hydrogen stream and a fuel gas stream; purging the pressure swing adsorption unit with an external purge gas stream from a hydroprocessing unit off gas; treating the off gas with a thermal swing adsorption unit to remove water and other impurities prior to purging the pressure swing adsorption unit, and using a protective adsorbent layer in the pressure swing adsorption unit to adsorb impurities from the external purge gas.

Integration of pressure swing adsorption with hydrocracking for improved hydrogen and liquids recovery

A reforming process is described. The reforming process includes introducing a hydrocarbon stream comprising hydrocarbons having 5 to 12 carbon atoms into a reforming zone containing reforming catalyst, the reforming zone comprising at least two reformers, each reformer having a set of reforming operating conditions, to produce a reformate effluent, wherein the last reformer contains less catalyst than the next to the last reformer.

Catalyst staging in catalytic reaction process

A process and apparatus for hydrocracking a distillate stream and provides for separation into product cuts without a separate debutanizer column, a naphtha splitter column or a sponge absorber column. The product cuts include a C-CLPG stream and a heavy naphtha stream which can be useful as a reforming feed stream. Additionally, as few as two heaters that rely on external utilities may be required for reboiling fractionator column bottoms.

Process for hydrocracking with simplified recovery

Processes and apparatus for recovering energy from a petroleum, petrochemical, or chemical process are disclosed. The process comprises providing a fluid process stream in a petroleum, petrochemical, or chemical process zone having a direct current power input; controlling a flow rate of the process stream by directing at least a portion of the process stream through a first power-recovery turbine to generate electric power as direct current therefrom; and providing the recovered direct current to the direct current power input of the process zone.

Use of recovered power in a process

The invention provides a process for providing a hydrogen stream to a process utilizing hydrogen comprising obtaining a gas stream containing hydrogen and compressing the gas stream to a pressure of at least 600 psig, Then the compressed gas stream is sent to a pressure swing adsorption unit containing a plurality of beds with at least 5 pressure equalization steps to produce a hydrogen stream. The hydrogen stream can then be compressed and sent to a process utilizing hydrogen. The compressed gas stream may be chilled before entering the pressure swing adsorption unit.

Integration of pressure swing adsorption and hydroprocessing for improved hydrogen utilization

A process is disclosed for producing hydrogen for a hydrogen consuming process comprising obtaining a gas stream containing hydrogen from a steam reforming hydrogen plant, sending the gas stream to a pressure swing adsorption unit to be separated into a hydrogen stream and a fuel gas stream; purging the pressure swing adsorption unit with an external purge gas stream from a hydroprocessing unit off gas; treating the off gas with a thermal swing adsorption unit to remove water and other impurities prior to purging the pressure swing adsorption unit; and using a protective adsorbent layer in the pressure swing adsorption unit at the product-hydrogen end of the bed to adsorb impurities from the external purge gas.

Use of refinery fuel gas to improve steam reformer pressure swing adsorption processes

The present invention involves processes and equipment for handling chloride in an ionic liquid alkylation system. The processes involve not only breaking down the organic chloride to active HCl for ionic liquid activation, but also recovering HCl in the effluent downstream to maintain the HCl requirements while also reducing HCl emissions. This equipment may be used in conjunction with an isomerization reaction zone which is integrated into the ionic liquid alkylation process to further isomerize n-paraffins to isoparaffins for recycle to the alkylation reaction zone.

Chloride management in ionic liquid alkylation processes

One or more processes for recovering entrained ionic liquid from a hydrocarbon phase containing droplets of ionic liquid are described. The processes includes contacting the hydrocarbon phase containing the droplets of ionic liquid with a retaining material in a separation zone. The droplets of ionic liquid are retained by the retaining material. The ionic liquid may be recovered from the retaining material with a solvent or desorbent. The retaining material may be regenerated and the ionic liquid may be reactivated. The retaining material may be used in a wash vessel to retain or remove contaminant solids within the reactor or other vessels.

Processes for removing entrained ionic liquid from a hydrocarbon phase

Processes for separating conjunct polymer from an organic phase are described. A mixture comprising an ionic liquid phase and the organic phase into the ionic phase and an organic phase comprising the conjunct polymer and at least one silyl or boryl compound. The organic phase is separated in a fractionation column into an overhead fraction comprising unreacted silane or borane compound and a bottoms fraction comprising the conjunct polymer and the silyl or boryl compound. The bottoms fraction is passed through an adsorption zone, and the silyl or boryl compound is recovered. Alternatively, the organic phase is passed through an adsorption zone first to remove the conjunct polymer and then a fractionation zone to separate the unreacted silane or borane compound from the silyl or boryl compound.

Separation of conjunct polymer from volatile regenerant for ionic liquid regeneration

Disclosed is a method for separating a chlorine-containing species from an aqueous solution of the chlorine-containing species in a catalytic hydrocarbon conversion process that includes the step of oxidizing a spent chloride-containing hydrocarbon conversion catalyst, the spent hydrocarbon conversion catalyst including a hydrocarbon residue formed thereon. The oxidizing forms a flue gas including chlorine-containing species, water, and oxides of carbon. The method further includes contacting the flue gas with a water scrubbing stream to dissolve at least a portion of the chlorine-containing species in the water scrubbing stream to form an aqueous acid solution and contacting the aqueous acid solution with a hygroscopic liquid to generate dehydrated hydrogen chloride gas. Still further, the method includes contacting the dehydrated hydrogen chloride gas with additional spent chloride-containing hydrocarbon conversion catalyst to sorb chlorine onto the additional spent chloride-containing hydrocarbon conversion catalyst.

Systems and methods for separating chlorine-containing species from aqueous solutions of chlorine-containing species

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Lisle, IL, United States of America

David A Wegerer