Praxair Technology, Inc.

Union Carbide Industrial Gases Technology Corporation

Dante Patrick Bonaquist

Bayram Arman

Arun Acharya

John Henri Royal

Joseph Alfred Weber

Kenneth Kai Wong

Michael James Lockett

Nancy Jean Lynch

John Fredric Billingham

Raymond Francis Drnevich

Henry Edward Howard

Minish Mahendra Shah

Robert A Beddome

Walter Joseph Olszewski

Joseph Michael Schwartz

Harry Cheung

Richard A Victor

Bryce Mark Rampersad

Christian Friedrich Gottzmann

James R Dray

Mark J Roberts

John Frederic Billingham

Todd Alan Skare

Ravi Prasad

Shrikar Chakravarti

Maulik R Shelat

Gervase Maxwell Christie

Jonathan Andrew Lane

Vijayaraghavan Srinivasan Chakravarthy

John H Ziemer

Theodore Fringelin Fisher

James B Wulf

Gregory Joseph Panuccio

Karl K Kibler

Gregory William Henzler

Neil Mark Prosser

Richard M Kelly

Richard John Jibb

James R Handley

Lawrence E Bool

Richard A Novak

David R Thompson

Mark Edward Vincett

Tu Cam Nguyen

Susan Marie Sattan

Kevin William Mahoney

Mohammad Abdul-Aziz Rashad

Jalal Hunain Zia

Kevin John Potempa

William M Canney

Ramona Manuela Dragomir

Michael D Jordan

William A Nash

Paul Louis Just

Michael Yijian Jin

Paul Arthur Henry

Cheryl Ann Engels

Nancy Rose Cribbin

Bernard Thomas Neu

Neno T Nenov

Norman Henry White

Arthur Edward Holmer

Vijayaraghavan Srinivasan

Thomas C Hanson

Michael John Stanko

Barry Alan Minbiole

Raymond P Roberge

Ravi Kumar

Mohamed Safdar Baksh

Alan Barnard Stewart

Richard C Fitzgerald

Michael John Sinicropi

Jerome Jankowiak

M Abdul-Aziz Rashad

John Bernard Saunders

John Keller Howell

Shanda Gardner Fry

Boris Yudin

James Brian Mize

John Peter Ricotta

John R Bianchi

Vincent Kotsubo

Mark H Karwan

Sabri Deniz

Mark Julian Roberts

James Richard Handley

Jack Michael Leo

Christine Barbara Allen-Hayes

Michael Douglas Monteith

William Martin Greene, Iii

David Ross Parsnick

Eric Owen Mueller

Christian Fredrich Gottzmann

Mohannad Abdul-Aziz Rashad

Stefan Ef Laux

A method and main heat exchange system for use in a cryogenic air separation plant in which down-flow and thermosiphon heat exchangers are employed to partially vaporize an oxygen-rich liquid produced in a lower pressure column and to condense the nitrogen-rich vapor in a higher pressure column. A greater proportion of the oxygen-rich liquid can be partially vaporized in the down-flow heat exchangers than in the thermosiphon heat exchangers and the nitrogen-rich vapor condensed in the thermosiphon heat exchangers can have a higher oxygen content than the nitrogen-rich vapor condensed in the down-flow heat exchangers. This allows the higher pressure column to operate at a lower pressure than would otherwise be possible. A central conduit can extend from the higher pressure column into the lower pressure column to introduce the nitrogen-rich vapor into at least the down-flow heat exchangers for purposes of reducing pressure drop and column height.

Main heat exchange system and method for reboiling

In the production of fuel such as ethanol from carbonaceous feed material such as biomass, a stream comprising hydrogen and carbon monoxide is added to the raw gas stream derived from the feed material, and the resulting combined stream is converted into fuel and a gaseous byproduct such as by a Fischer-Tropsch reaction. The gaseous byproduct may be utilized in the formation of the aforementioned stream comprising hydrogen and carbon monoxide.

Using fossil fuels to increase biomass-based fuel benefits

A method and apparatus for producing a carbon monoxide containing product in which cathode and anode sides of an electrically driven oxygen separation device are contacted with carbon dioxide and a reducing agent, respectively. The carbon dioxide is reduced to carbon monoxide through ionization of oxygen and the reducing agent lowers the partial pressure of oxygen at the anode side to partially drive oxygen ion transport within the device through the consumption of the oxygen and to supply heat. The lowering of oxygen partial pressure reduces voltage and therefore, electrical power required to be applied to the device and the heat is supplied to heat the device to an operational temperature and to the reduction of the carbon dioxide occurring at the cathode side. The device can be used as part of an integrated apparatus in which the carbon dioxide is supplied from a waste stream of a process plant.

Electrochemical carbon monoxide production

A process and system for recovering valuable by-products (e.g., hydrogen) from refinery gas streams. For hydrogen-only recovery, the invention comprises a partial condensation step to upgrade the refinery fuel gas to a minimum of 60% hydrogen, which is further purified in a pressure swing adsorption process. When configured to recover hydrogen, methane-rich gas and raw LPG (methane depleted gas containing C2 hydrocarbons and heavier), the invention comprises two partial condensation steps where the feed is cooled in the first step to allow separation of ethane and heavier hydrocarbons, and the resulting vapor is cooled to a lower temperature in a second step for hydrogen recovery.

Refinery gas upgrading via partial condensation and PSA

A separation method and apparatus that separates a component from a feed stream by use of a membrane in which separation is driven, at least in part, by a sweep stream. The sweep stream may be pumped to a supercritical pressure and then heated to at least near supercritical temperature, at least in part, through heat exchange with a component laden sweep stream being discharged from the membrane. A multi-component mixture can also be used that will produce the sweep stream as a vapor as a result of the heat exchange. The component laden sweep stream, due to cooling through the indirect heat exchange, will form a two-phase fluid that can be phase separated into a vapor phase enriched in the component that can be taken as a product and a residual liquid that can be recirculated in the formation of the sweep stream in the liquid state.

Separation method and apparatus

Offgas containing carbon dioxide and carbon monoxide that is produced in the reduction of ores and other metal oxides in a reactor is treated to reduce its carbon dioxide content and is then contacted with metal oxide to reduce the oxidation state of the metal and oxidize carbon monoxide therein to carbon dioxide, following which the reduced metal is oxidized with steam to produce hydrogen that can be fed to the reactor.

Producing metal and carbon dioxide with hydrogen recycle

A method of producing a carbon dioxide product stream from a synthesis gas stream formed within a hydrogen plant having a synthesis gas reactor, a water-gas shift reactor, located downstream of the synthesis gas reactor to form the synthesis gas stream and a hydrogen pressure swing adsorption unit to produce a hydrogen product recovered from the synthesis gas stream. In accordance with the method the carbon dioxide from the synthesis gas stream by separating the carbon dioxide from the synthesis gas stream in a vacuum pressure swing adsorption system, thereby to produce a hydrogen-rich synthesis gas stream and a crude carbon dioxide stream and then purifying the crude carbon dioxide stream by a sub-ambient temperature distillation process thereby to produce the carbon dioxide product. A hydrogen synthesis gas feed stream to the hydrogen pressure swing adsorption unit is formed at least in part from the hydrogen rich stream.

Carbon dioxide production method

A system for cooling a power transformer wherein cryogen in liquid or solid form is sprayed into a vaporizer or directly onto a power transformer radiator and the vaporizing and/or sublimating cryogen cools a cooling fluid within the vaporizer or cools the radiator directly to provide cooling to the power transformer.

System for cooling a power transformer

A refrigeration system especially useful for refrigerating biological samples wherein a cryocooler, such as one employing a pressure wave from a pressure wave generator, is used to generate refrigeration for cooling liquid coolant or purging fluid, which is employed within hollow structures bordering an enclosed space of a storage unit or within the storage space of a storage unit and is subsequently cleaned of contaminants purged from the storage space.

Biological refrigeration system

A method for providing cooling to superconducting cable wherein pressurized liquid cryogen is passed into a vacuum vessel, which is maintained at a lower pressure by a vacuum pump, and a portion of the liquid cryogen is flashed to produce cooled liquid cryogen. The evacuating energy combined with the pressurized liquid produces a pressure gradient which serves to provide a continuous supply of cooled liquid cryogen for providing cooling to the superconducting cable.

Method for providing cooling to superconducting cable

Growing community of inventors

Grand Island, NY, United States of America

Dante Patrick Bonaquist