Praxair Technology, Inc.

Power Systems Mfg., LLC

Lee Jonathan Rosen

Henry Edward Howard

Sean Michael Kelly

Gervase Maxwell Christie

Charles Robinson

Nick Joseph Degenstein

Ahmed F Abdelwahab

Jamie R Wilson

Carl L Schwarz

Reh-Lin Chen

Brian R Kromer

Michael M Litwin

Lawrence W Kosowski

Kuang-Tsai Wu

Hanfei Tuo

Christopher Leger

Seth A Potratz

Chao Liang

David Lenhert

Peter Stuttaford

M Mushtaq Ahmed

Khalid Oumejjoud

Javier E Gonzalez

Kuang Tsai Wu

Uttam R Doraswami

Peter So

Jon Glende

Mushtaq M Ahmed

Stefan Ernst Friedrich Laux

Rakesh Ranjan

Rui Ma

Ahmed M Mushtaq

Nick J Degenstein

A vaporization system and control method are provided. Liquid cryogen is provided to first ambient air vaporizer (AAV) units. When an output superheated vapor temperature is less than a threshold, the liquid cryogen is provided to second AAV units. When greater than or equal to the threshold, it is determined whether the second AAV units are defrosted. When defrosted, the liquid cryogen is provided to the second AAV units. When not defrosted, it is determined whether ice has formed on the first AAV units. When not formed, it is again determined whether the superheated vapor temperature is less than the threshold. When formed, it is determined whether a current ambient condition is favorable to defrosting the second AAV units. When not favorable, the liquid cryogen is provided to the second bank of AAV units. When favorable, it is again determined whether the superheated vapor temperature is less than the threshold.

System and method for cryogenic vaporization using ambient air vaporizer

A cryogenic vaporization system and a method for controlling the system are provided. The system includes a first vaporizer arrangement and a second vaporizer arrangement configured for receiving a liquid cryogen and outputting a superheated vapor. The second vaporizer arrangement is connected in parallel with the first vaporizer arrangement, and includes one or more banks of ambient air vaporizer (AAV) units or loose fill media with a high heat capacity. The second vaporizer arrangement has a different configuration than that of the first vaporizer arrangement. The system further includes at least one control valve controlling provision of the liquid cryogen to at least one of the first vaporizer arrangement and the second vaporizer arrangement.

System and method for cryogenic vaporization with parallel vaporizer arrangements

A method for compression of an incoming feed air stream using at least two variable speed compressor drive assemblies controlled in tandem is provided. The first variable speed drive assembly drives at least one compression stage in the lower pressure compressor unit driven while the second variable speed drive assembly drives higher pressure compression stage disposed either in the common air compression train or the split functional compression train of the air separation plant. The first and second variable speed drive assemblies are preferably high speed, variable speed electric motor assemblies each having a motor body, a motor housing, and a motor shaft with one or more impellers directly and rigidly coupled to the motor shaft via a sacrificial rigid shaft coupling.

Method for compressing an incoming feed air stream in a cryogenic air separation plant

A commercially viable modular ceramic oxygen transport membrane reforming reactor for producing a synthesis gas that improves the thermal coupling of reactively-driven oxygen transport membrane tubes and catalyst reforming tubes required to efficiently and effectively produce synthesis gas.

Ceramic oxygen transport membrane array reactor and reforming method

A method and apparatus for producing heat used in a synthesis gas production process is provided. The disclosed method and apparatus include a plurality of tubular oxygen transport membrane elements adapted to separate oxygen from an oxygen containing stream contacting the retentate side of the membrane elements. The permeated oxygen is combusted with a hydrogen containing synthesis gas stream contacting the permeate side of the tubular oxygen transport membrane elements thereby generating a reaction product stream and radiant heat. The present method and apparatus also includes at least one catalytic reactor containing a catalyst to promote the steam reforming reaction wherein the catalytic reactor is surrounded by the plurality of tubular oxygen transport membrane elements. The view factor between the catalytic reactor and the plurality of tubular oxygen transport membrane elements radiating heat to the catalytic reactor is greater than or equal to 0.5.

Oxygen transport membrane system and method for transferring heat to catalytic/process reactors

A method and apparatus for producing a synthesis gas product having one or more oxygen transport membrane elements thermally coupled to one or more catalytic reactors such that heat generated from the oxygen transport membrane element supplies endothermic heating requirements for steam methane reforming reactions occurring within the catalytic reactor through radiation and convention heat transfer. A hydrogen containing stream containing no more than 20 percent methane is combusted within the oxygen transport membrane element to produce the heat and a heated combustion product stream. The heated combustion product stream is combined with a reactant stream to form a combined stream that is subjected to the reforming within the catalytic reactor. The apparatus may include modules in which tubular membrane elements surround a central reactor tube.

Synthesis gas method and apparatus

A hot oxygen stream containing radicals is fed into a gas stream, such as a catalyst regenerator flue gas stream, that contains carbon monoxide to convert carbon monoxide to carbon dioxide.

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Reduction of CO and NOx in full burn regenerator flue gas

The carbon monoxide and hydrocarbon content of flue gas in a cement clinker production apparatus is lowered by feeding a high velocity stream of hot oxygen into the flue gas. Methods and apparatus for producing the hot oxygen stream are disclosed.

Cement clinker production with reduced emissions

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Buffalo, NY, United States of America

Lee Jonathan Rosen