Praxair Technology, Inc.

Union Carbide Corporation

Other

Union Carbide Industrial Gases Technology Corporation

James Smolarek

Mark William Ackley

Herbert Raymond Schaub

Cem E Celik

Bernard Thomas Neu

Jeffert John Nowobilski

Frederick Wells Leavitt

John Harry Fassbaugh

Mohamed Safdar Allie Baksh

Michael S Manning

Michael J Campbell

Michael John Sinicropi

Mark Thomas Emley

Michael Kenneth Rogan

Ravi Prasad

Andrew Chester Rosinski

Leslie Charles Kun

Ahmed F Abdelwahab

James Stanley Schneider

Scot Eric Jaynes

Timothy Mark Aaron

Ashwin Desai

Bayram Arman

Arun Acharya

Joseph Alfred Weber

Victor Emmanuel Bergsten

Neno T Nenov

Vijayaraghavan Srinivasan

Oscar W Haas

Alan Barnard Stewart

Kevin John Potempa

John Joseph Pietruszewski

Dale A Lagree

Lee J Toussaint

Kimberly A LaSala

Murali Chinta

Robert B Bollinger

David A Walker

Timothy S Van Lente

Michael Victor Barsottelli

Ahmed Abdelwahab

A modular and compact adsorbent bed structure is disclosed for use in an adsorption-based gas separation plant. The conventional adsorbent bed in a gas separation plant is replaced with a plurality of modular adsorbent bed units connected to make the adsorbent bed structure. The modular design requires lower fabrication and maintenance costs; is easier to transport; and is easier to load with adsorbent material.

Modular compact adsorption bed

A modular and compact adsorbent bed structure is disclosed for use in an adsorption-based gas separation plant. The conventional adsorbent bed in a gas separation plant is replaced with a plurality of modular adsorbent bed units connected to make the adsorbent bed structure. Modular adsorbent bed units of this invention provide higher capacity of product per unit volume of adsorbent material (i.e., increased adsorbent utilization) as compared to that obtained from conventional adsorbent beds. The modular design requires lower fabrication costs; is easier to transport; has less maintenance and repair requirements; and is easier to load with adsorbent material.

The present invention generally relates to the attenuation of vacuum blower noise using a silencer. More particularly, the present invention relates to a low-cost, reliable and efficient silencer for reducing noise levels in adsorption-based gas separation plants from the discharge of the vacuum blower or from the feed blower inlet, to about the 90 dBA level or less, at the silencer opening to the atmosphere. The silencer includes at least one reactive chamber(s) to attenuate low frequency pulsations and at least one absorptive chamber(s) to attenuate noise at medium to high frequency noise.

Silencer for adsorption-based gas separation systems

Systems and processes are provided for gas separation using high-speed permanent magnet variable-speed motors to accelerate and decelerate centrifugal compressors suitable for use in pressure swing adsorption (PSA) or vacuum pressure swing adsorption (VPSA) processes.

Systems and methods for gas separation using high-speed permanent magnet motors with centrifugal compressors

The present invention relates to a method of reducing or elimination pressure pulsations and noise created by blowers in a gas separation plant. The method employs two identical and 180&#xb0; out of phase blowers synchronized together to provide both a large flow of air and active noise cancellation to eliminate pressure pulsations. The two blowers are synchronized in such a way that pressure pulses created by one blower will actively be cancelled by the pulses generated by the other blower. At the same time, both blowers will work together to force a large quantity of gas flow in or out of the plant. The twin set of blowers can be used for feed or vacuum applications in the plant. This way large tonnage plant capital costs can be reduced by eliminating the need for an expensive silencer and a single large custom-made blower.

Twin blowers for gas separation plants

A gas recovery system comprising a source of gas having a preselected concentration of a desired component (), at least one application () that adds impurities to said gas, and at least one an adsorption system () that purifies said gas to produce a purified gas for re-use in application (), wherein said at least one adsorption system includes at least one adsorbent bed (A) having at least three layers of adsorbents. A recovery process is also disclosed.

Helium recovery

The present invention relates to a PSA system using an indexing rotary dual valve regulating a stepping mode of operation that controls a variable bed inlet feed flow rate, controllable pressure between feed lines in different beds of the PSA system and varied output flow rate of product gas such as high purity hydrogen gas.

Indexing rotary dual valve for pressure swing adsorption systems

The present invention relates to a gas recycling system that includes a) a source of gas having a predetermined purity; b) an application system that uses the gas and adds contaminants to the gas; c) an adsorption system for removing the contaminants from the gas to produce a purified gas and a waste gas; d) a gas purity analyzer for measuring the amount of the contaminants in the waste gas; and e) conduits connecting the gas source to the application system, and the application system to the adsorption system.

Control system for helium recovery

The present invention is a pressure adsorber vessel that employs a radial adsorbent bed with a variable perforated flow distributor to provide an effective uniform fluid flow though the adsorbent bed.

Radial bed flow distributor for radial pressure adsorber vessel

A method and apparatus for introducing a compressed gas into a pressure vessel, for instance, hydrogen into a vehicle fuel tank, in which hydrogen is compressed in an initial and final compressions stages which can be powered by a common source. The initial compression stage can continually operate to compress the gas in a lower pressure storage bank during the time that hydrogen is dispensed to a vehicle fuel tank. In time periods between dispensing, the gas from the lower pressure stage and from the lower pressure storage bank is compressed in the final compression stage and stored in a higher pressure storage bank. When the pressure vessel is to be filled, the compressor compresses the gas from the higher pressure storage bank to fill the vessel.

Method and apparatus for filling a pressure vessel having application to vehicle fueling

High product recovery and low BSF are achieved for fast-cycle shallow adsorbers in VPSA gas separation enabled by the coupled effects of high intrinsic adsorption rate and proper particle size selection.

Enhanced rate PSA process

An apparatus includes a vessel and a radial adsorption bed within the vessel and either an axial adsorption bed for a storage tank within the inner diameter of the radial adsorption bed. In one example, the radial adsorption bed surrounds an axial adsorption bed. A process that can be conducted in the vessel includes directing a gas mixture across the radial adsorption bed, thereby causing adsorption of at least a portion of a gas component present in the gas mixture and producing partially purified product. The partially purified gas is directed through the axial adsorption bed, thereby causing further purification of the partially purified gas and producing product gas. In another example, the radial adsorption bed surrounds a storage tank. The storage tank can be employed to store a gas generated or used in a separation process conducted in the radial adsorption bed. For instance, the storage tank can be employed to store product gas or void gas generated in a vacuum/pressure swing adsorption process.

Radial adsorption gas separation apparatus and method of use

An internal combustion engine having an integrally connected pressure swing adsorption (PSA) system to provide oxygen-enriched air or oxygen-deficient air, in situ, to the mixing chamber of a spark-ignition or compression-ignition engine.

Pressure-swing adsorption system for internal combustion engines

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Boston, NY, United States of America

James Smolarek