With Heating Or Cooling Patents (Class 95/87)
  • Patent number: 9423383
    Abstract: Certain embodiments described herein are directed to chromatography systems that include a microfluidic device. The microfluidic device can be fluidically coupled to a switching valve to provide for selective control of fluid flow in the chromatography system. In some examples, the microfluidic device may include a charging chamber, a bypass restrictor or other features that can provide for added control of the fluid flow in the system. Methods of using the devices and methods of calculating lengths and diameters to provide a desired flow rate are also described.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: August 23, 2016
    Assignee: PerkinElmer Health Sciences, Inc.
    Inventor: Andrew Tipler
  • Patent number: 9034077
    Abstract: A fast gas chromatograph (GC) method and device for obtaining fast gas chromatography analysis, in which a capillary gas chromatography column is inserted into a resistively heated metal tube located mostly outside a heated oven, which serves as a heated transferline to a flexible column that enters a resistively heated metal tube from a gas chromatograph injector and exits into a gas chromatograph detector. The resistively heated metal tube of the fast GC device has an internal diameter that is over twice the external diameter of the GC column so as to enable the insertion of several capillary GC column loops. The process of column insertion into or removal from the heated tube is aided by touching it with an ultrasound vibrating device that remarkably reduces the friction during column insertion into the metal tube heater.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: May 19, 2015
    Assignee: Aviv Amirav
    Inventors: Aviv Amirav, Alexander B. Fialkov
  • Publication number: 20150075374
    Abstract: A system and method for thermal gradient gas chromatography wherein a front or injection end of a column is heated to a higher temperature than a back or detector end to thereby create a thermal gradient having a profile that is substantially monotonically non-increasing and has a positive second derivative, and then providing a heat source to raise the thermal gradient and cause it to remain stationary or to travel through the column while maintaining a desired profile.
    Type: Application
    Filed: September 16, 2014
    Publication date: March 19, 2015
    Inventors: H. Dennis Tolley, Anzi Wang, Samuel E. Tolley, Milton L. Lee
  • Patent number: 8974580
    Abstract: A collimator fixed to the cold jet nozzle of a modulator of a two-dimensional gas chromatograph to aid in the alignment of the cold jet nozzle and loop modulator tube.
    Type: Grant
    Filed: January 3, 2013
    Date of Patent: March 10, 2015
    Assignee: ExxonMobil Research and Engineering Company
    Inventor: Frank C. Wang
  • Patent number: 8882894
    Abstract: The invention relates to a vaporization injector for a gas chromatograph, said injector comprising a structure (11) mounted in a detachable manner on the gas chromatograph body and including the sample introduction means, the vaporization chamber and pneumatic connections for feeding the carrier gas to the vaporization chamber and to the septum purge means, as well as pneumatic connections for evacuating the splitted sample and carrier gases.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: November 11, 2014
    Assignee: Thermo Fisher Scientific S.p.A.
    Inventors: Stefano Pelagatti, Eric Phillips, Paolo Magni
  • Patent number: 8607615
    Abstract: A two-dimensional gas chromatography system having first and second separation columns, a thermal modulator disposed between the first and second columns and having a plurality of stage channels, and a micro heater monolithically integrated in the thermal modulator. The thermal modulator is operable to trap and focus gas/vapor species within the plurality of stage channels upon cooling and release the gas/vapor species to the second column upon heating by the micro heater.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: December 17, 2013
    Assignee: The Regents of The University of Michigan
    Inventors: Sung Jin Kim, Katsuo Kurabayashi, Kensall D. Wise, Edward T. Zellers, Bruce P. Block
  • Patent number: 8591630
    Abstract: In a fast gas chromatograph (GC) method and device for obtaining fast gas chromatography analysis, a capillary gas chromatography column is inserted into a resistively heated metal tube located mostly outside a standard gas chromatograph oven, which may serve as a heated transfer line to a flexible column that enters the resistively heated metal tube from its injector and exits into its detector. The fast GC device enables less than one minute full range temperature programming and cooling back analysis cycle time. The fast GC according to one embodiment is combined with mass spectrometry with supersonic molecular beams for the provision of fast analysis cycle time together with highly informative mass spectral information for improved sample analysis and identification.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: November 26, 2013
    Inventors: Aviv Amirav, Alexander B. Fialkov
  • Patent number: 8529672
    Abstract: Methods and systems for cooling gas chromatography ovens that comprise a housing having a fluid entry and a sleeve positioned within the housing to provide a fluid gap between the inner surface of the housing and the outer surface of the sleeve, where the sleeve is coupled to the fluid entry, and where a cooling fluid from the fluid entry traverses the inner layer of the sleeve and thereafter the outer layer of the sleeve via the fluid gap. In one embodiment, the housing includes at least one adjustable fluid exit, and the fluid gap is in fluid communications with the fluid exit(s). The fluid entry and the sleeve can be concentric, and the sleeve can include a heating element. A fan can be positioned to drive the cooling fluid from the fluid entry.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: September 10, 2013
    Assignee: PerkinElmer Health Sciences, Inc.
    Inventors: Jim Botelho, Stephen Pignataro, Jr., John Mezzoni, John H. Vanderhoef
  • Patent number: 8512456
    Abstract: The invention is directed to an oven for use in gas chromatography. In one embodiment, the oven is comprised of a housing that defines an interior chamber within which a substantial portion of a heating element and a radial fan blade are located. The interior chamber also defines a space within which a separation column is located when the oven is in use. The substantial portion of the heating element is located so as to receive air, when the oven is in operation, that is being moved by the radial fan blade in a direction that is substantially perpendicular to the axis of rotation of the blade. The space within which a separation column is located is also defined so as to receive air, when the oven is in operation, that is being moved by the radial fan blade in a direction that is substantially perpendicular to the axis of rotation of the blade.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: August 20, 2013
    Assignee: Wasson-ECE Instrumentation, Inc.
    Inventors: John G. Wasson, Robert J. Wasson
  • Patent number: 8500863
    Abstract: A room temperature trap for the purification and concentration of gaseous methane. The trap utilizes the adsorption and desorption properties of microporous spherical carbon molecular sieves to purify and concentrate radiolabelled methane for application in an automated synthesis module without the need for cryogenic cooling.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: August 6, 2013
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Nicie C. Murphy, Todd L. Graves
  • Patent number: 8408044
    Abstract: Automated systems and methods for processing liquid test samples are generally provided. Automated systems generally include a gas and liquid separator configured for removing at least one volatile component from the test sample, a first trapping vessel in fluid communication with the gas and liquid separator, wherein the first trapping vessel contains a trapping material capable of adsorbing at least one of the at least one volatile component to provide at least one adsorbed component, and a heat source configured to heat the trapping material to a temperature sufficient to release at least one of the at least one adsorbed component from the trapping material to provide at least one released component.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: April 2, 2013
    Assignee: Brooks Rand Inc
    Inventor: Paul Danilchik
  • Patent number: 8404185
    Abstract: A system for pre-concentrating analytes in a sample prior to introduction into a chromatographic column is generally disclosed comprising a housing, an adsorbent disposed in the housing, and first and second conduits having an inlet and an outlet, respectively, for transferring fluid out of and into the housing during adsorption/dry purge and desorption stages, respectively. In some embodiments, the inlet of the first conduit and the outlet of the second conduit are both disposed in one end of the housing and are offset from each other with respect to the adsorbent.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: March 26, 2013
    Assignee: PerkinElmer Health Sciences, Inc.
    Inventors: Andrew Tipler, Richard G Edwards, James E. Botelho
  • Patent number: 8398851
    Abstract: The invention relates to a device and to a method for determining the proportion of fuel in a combustion engine lubricating oil. The device according to the invention comprises a column (12) with at least 22000 theoretical plates and a steady state phase capable of separating the fuel, the oil, the internal standard contained in the oil and the solvent, in which the oil and the internal standard are diluted, and a heating module (120) capable of causing an increase in the temperature of the column (12) at a rate of at least 350° C./min. In the method according to the invention, the column (12) is subjected to determined cycles during which the pressure of the carrier gas and the temperature are varied.
    Type: Grant
    Filed: July 7, 2008
    Date of Patent: March 19, 2013
    Assignee: Renault S.A.S.
    Inventors: Laurent Tiquet, Pierrick Rouille
  • Publication number: 20130000485
    Abstract: A flow control system, method and device for performing thermal desorption is provided. In one embodiment, the system includes a first flow path in which gas flows from a first carrier gas inlet, through a first vessel in a first direction at a first flow rate to adsorb analytes on an adsorbent of said first vessel; a second flow path in which gas flows from a second carrier gas inlet, through said first vessel in the first direction at a second flow rate to further adsorb the analytes on the adsorbent of said first vessel; a third flow path in which a carrier gas flows through said first vessel in a second direction to carry desorbed analytes out of said first vessel; and wherein the second flow rate of carrier gas through said first vessel is greater than the first flow rate of carrier gas through said first vessel.
    Type: Application
    Filed: June 29, 2011
    Publication date: January 3, 2013
    Inventors: Andrew Tipler, Greg Johnson, David J. Scott
  • Patent number: 8277544
    Abstract: A thermal modulation device for a gas chromatography (GC) system a cold zone, a first hot zone and a second hot zone, which are located outside of a GC oven of the GC system, and a flexible capillary column. The cold zone includes a thermoelectric cooler assembly. The first hot zone is adjacent a first side of the cold zone, and has a corresponding first heat source. The second hot zone is adjacent a second side of the cold zone, and has a corresponding second heat source. The flexible capillary column includes a first segment, configured to move between the first hot zone and the cold zone in accordance with a modulation frequency, and a second segment, configured to move between the cold zone and the second hot zone in accordance with the modulation frequency.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: October 2, 2012
    Assignee: Agilent Technologies, Inc.
    Inventors: Xiaosheng Guan, Qiang Xu
  • Patent number: 8226825
    Abstract: Systems and methods for performing chromatography separations or analyses are disclosed. The methods are based upon an equilibrium gradient focusing mode in contrast to conventional transient migration-based modes. By matching the migration speed of one or more analyte(s) of interest to the wave speed of a thermal gradient induced to travel along a region in which chromatographic partitioning occurs, significant improvements in detection limits are achieved. In particular, a temperature gradient focusing strategy is described in which analyte(s) of interest are circulated around a continuous chromatography system in order to focus the analyte(s). Also described are various devices and systems that can be used in the methods described herein.
    Type: Grant
    Filed: July 21, 2009
    Date of Patent: July 24, 2012
    Assignee: The United States of America, as represented by the Sectretary of Commerce, The National Institute of Standards and Technology
    Inventor: David J. Ross
  • Patent number: 8167987
    Abstract: Systems and methods for cooling a chromatographic column is disclosed generally, comprising heating a chromatographic column, supplying fluid into the column via the inlet end of the column at an inlet pressure, decreasing the temperature of the column, thereby causing the fluid in the column to contract, and controlling the fluid in the column such that the rate at which the fluid in the column contracts does not exceed the flow rate of the fluid supplied to the column. In certain embodiments, the rate of change of the volume of the fluid in the column as the column temperature decreases is modeled, and the rate of contraction of the gas in the column is estimated therefrom. In some embodiments, the column temperature and/or inlet pressure are controlled by a programmable chromatographic oven.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: May 1, 2012
    Assignee: PerkinElmer LAS, Inc.
    Inventor: Andrew Tipler
  • Patent number: 8114200
    Abstract: A portable multi-dimensional gas chromatograph, the gas chromatograph including a carrier gas container, a regulator fluidly connected to the carrier gas container, a dopant chamber containing a reference chemical, at least one pre-concentrator which is fluidly connected to the regulator and the dopant chamber, a first separation column fluidly connected to the at least one pre-concentrator, a second separation column fluidly connected to the at least one pre-concentrator, a first detector fluidly connected to the first separation column, and a second detector fluidly connected to the second separation column.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: February 14, 2012
    Assignee: VPI Enigineering, Inc.
    Inventors: Sheena Alm, James Bentley, John Blankevoort, Mark Kaspersen, Collin Lewis, Derek Maxwell, Ken Wunner
  • Patent number: 8075768
    Abstract: A liquid chromatograph device was provided wherein operations inside a thermostatic chamber can be safely performed even while a heat block is being heated. The liquid chromatograph device comprises: a thermostatic chamber; outer doors and that are disposed at the front surface of the thermostatic chamber; a heat block; heater for heating said heat block; temperature sensor for the heat block; flowing means for flowing air between the inside and outside of the thermostatic chamber; a control means for controlling the supply of power to the heater based on the result of the temperature sensor; and an inner door between the outer door and the heat block, the inner door comprising a hollow inner door main body, a heat-insulating material that is housed within the inner door so as to form an air chamber between the heat-insulating material and the surface of the outer door of the inner door main body and inlet/outlet slits and that are formed in the inner door main body.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: December 13, 2011
    Assignee: Shimadzu Corporation
    Inventor: Takao Okado
  • Patent number: 8021468
    Abstract: A room temperature trap for the purification and concentration of gaseous methane. The trap utilizes the adsorption and desorption properties of microporous spherical carbon molecular sieves to purify and concentrate radiolabelled methane for application in an automated synthesis module without the need for cryogenic cooling.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: September 20, 2011
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Nicie C. Murphy, Todd L. Graves
  • Patent number: 7984638
    Abstract: A gas chromatograph oven including a housing, a capillary tube and a thermal control assembly. The housing defining a capillary tube receiving space and having at least one outlet port to permit the passage of a fluid from the capillary tube receiving space of the housing. The capillary tube is positioned in the capillary tube receiving space of the housing and has a gas inlet end connectable to a gas injector and a gas detector end connectable to a gas detector. The thermal control assembly is in fluid communication with the capillary tube receiving space of the housing and is connectable to a source of a temperature regulating fluid.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: July 26, 2011
    Assignee: The Board of Regents of the University of Oklahoma
    Inventor: Robert L. White
  • Patent number: 7928370
    Abstract: An open probe method for sample introduction into a mass spectrometer is disclosed, comprising the steps of: loading a sample holder with sample compounds to be analyzed; heating a probe oven; introducing said sample compounds in said sample holder into said heated probe oven; flowing inert gas into said heated probe oven; vaporizing said sample in said heated probe oven by the combined effect of oven temperature and inert gas flow; entraining said vaporized sample in said inert gas; and, transferring said vaporized sample in inert gas into an ion source of a mass spectrometer; wherein said heated probe oven remains open to the ambient atmosphere during sample introduction and analysis; said inert gas is flowing in said heated probe oven in two directions of a transfer line to a mass spectrometer ion source and to the oven opening; said vaporized sample in inert gas is transferred through a heated transfer line directly into the ionization chamber of an ion source of a mass spectrometer.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: April 19, 2011
    Assignee: Aviv Amirav
    Inventors: Aviv Amirav, Alexander Gordin
  • Patent number: 7914612
    Abstract: A compliant column sheath assembly for use in a gas chromatograph is provided which includes an open tubular column in the form of a helical coil having a coiled length of between about 5 and 15 cm. The sheath assembly further includes an insulating sheath which surrounds the open tubular column and a frame. When incorporated in a gas chromatograph, the compliant column sheath assembly allows samples to be analyzed in about 2 to 10 seconds.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: March 29, 2011
    Assignee: University of Dayton
    Inventors: Wayne A. Rubey, Richard C. Striebich, Jesse Contreras
  • Patent number: 7806963
    Abstract: An apparatus, system, and method are disclosed for broad spectrum chemical detection. The method includes detecting an ambient temperature and setting a target temperature based on the ambient temperature. The target temperature is a temperature greater than the ambient temperature. The method further includes determining elution data for the target temperature, either by selecting a target temperature at which elution data is available, or by interpolating between available sets of elution data. The method includes setting a preferred target temperature when an external power source is available, when faster sensor response is desired, and when higher resolution data is desired. The method further includes controlling the temperature of gas chromatography (GC) columns within a GC sensor to the target temperature.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: October 5, 2010
    Assignee: Seer Technology, Inc.
    Inventors: Neil S. Arnold, Gary Bodily
  • Patent number: 7691181
    Abstract: A system for controlling the flow rate into a chromatographic column is disclosed generally comprising communicating a fluid to the column through a transfer line, measuring the inlet pressure, determining the outlet pressure, and adjusting the applied pressure until the inlet and outlet pressures produce a desired flow rate for the transfer line outlet. In certain embodiments, the applied pressure is adjusted by controlling a proportional valve. In some embodiments, the outlet pressure is determined by measuring the pressure drop across the transfer line and calculating the outlet pressure from the measured inlet pressure and the pressure drop.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: April 6, 2010
    Assignee: PerkinElmer LAS, Inc.
    Inventors: Andrew Tipler, Richard G Edwards
  • Publication number: 20090314158
    Abstract: A room temperature trap for the purification and concentration of gaseous methane. The trap utilizes the adsorption and desorption properties of microporous spherical carbon molecular sieves to purify and concentrate radiolabelled methane for application in an automated synthesis module without the need for cryogenic cooling.
    Type: Application
    Filed: June 23, 2008
    Publication date: December 24, 2009
    Applicant: Siemens Medical Solutions USA, Inc.
    Inventors: Nicie C. Murphy, Todd L. Graves
  • Patent number: 7572319
    Abstract: An analyte pre-concentrator for gas chromatography is disclosed generally comprising a tube packed with an adsorbent, wherein the tube may serve as the liner of a chromatographic injector, as an adsorbent trap coupled to a chromatographic column, and/or as an adsorbent trap coupled to a headspace sampler. Preferably, a heating device allows the tube to be heated. In a preferred embodiment, the analyte pre-concentrator further comprises a column isolating accessory so that a chromatographic column can be temporarily isolated from substances flowing through the tube.
    Type: Grant
    Filed: December 24, 2007
    Date of Patent: August 11, 2009
    Assignee: PerkinElmer LAS, Inc.
    Inventors: Andrew Tipler, Gary Campbell, Mark Collins
  • Patent number: 7559226
    Abstract: An analytical column includes a coating that absorbs at least one of ultraviolet (UV) and visible (VIS) radiant energy and converts the radiant energy into heat.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: July 14, 2009
    Assignee: Agilent Technologies, Inc.
    Inventor: Sammye E. Traudt
  • Patent number: 7552617
    Abstract: An automated system for processing a liquid test sample is provided.
    Type: Grant
    Filed: August 1, 2007
    Date of Patent: June 30, 2009
    Assignee: Brooks Rand Labs, LLC
    Inventor: Paul Danilchik
  • Patent number: 7534286
    Abstract: Systems and methods for cooling a chromatographic column is disclosed generally, comprising heating a chromatographic column, supplying fluid into the column via the inlet end of the column at an inlet pressure, decreasing the temperature of the column, thereby causing the fluid in the column to contract, and controlling the fluid in the column such that the rate at which the fluid in the column contracts does not exceed the flow rate of the fluid supplied to the column. In certain embodiments, the rate of change of the volume of the fluid in the column as the column temperature decreases is modeled, and the rate of contraction of the gas in the column is estimated therefrom. In some embodiments, the column temperature and/or inlet pressure are controlled by a programmable chromatographic oven.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: May 19, 2009
    Assignee: PerkinElmer LAS, Inc.
    Inventor: Andrew Tipler
  • Patent number: 7524363
    Abstract: A separation column assembly for a gas chromatograph and the like is provided. The assembly is a self contained unit which allows very rapid heating and cooling of the column.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: April 28, 2009
    Assignee: Alliant Techsystems Inc.
    Inventors: James Bentley, John Blankevoort, Collin Lewis, Ken Wunner
  • Patent number: 7520920
    Abstract: The present invention discloses a gas chromatograph assembly. In one implementation, the assembly includes a sample injector and a guard column assembly. The guard column assembly includes a guard column connected to and downstream of the sample injector; a jacket with low thermal mass surrounding the guard column; a temperature controlled heater connected to the jacket to control the temperature of the jacket and thereby the temperature of the guard column; and an insulating housing surrounding the jacket. An analytical column is connected to and downstream of the guard column.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: April 21, 2009
    Assignee: Griffin Analytical Technologies
    Inventors: Mark A. Gregory, Garth E. Patterson, Anthony J. Cochran, Jason L. Springston
  • Patent number: 7513936
    Abstract: The gas chromatography (GC) column assembly described herein consists of capillary GC column material, such as fused silica or metal capillary tubing, which is constrained to lie in a flat, ordered, spiral pattern and then encased between two thin opposing surfaces. The resulting column assembly is flat, dimensionally stable and can be very efficiently thermally modulated. The resulting column assembly also takes up very little space, has very little thermal mass, and can be easily and accurately manufactured. The column assembly can be adapted for chromatographic use by affixing it to the surface of a thermal modulator described herein by means of adhesive force or by mechanical compression, and then by attaching the free ends of the exposed column material to the input and output ports of the chromatographic device.
    Type: Grant
    Filed: May 3, 2006
    Date of Patent: April 7, 2009
    Inventor: Ned J. Roques
  • Patent number: 7485175
    Abstract: The invention relates to a device for positioning and holding one or more chromatographic column lengths being subjected to one or more jets of fluid to change the temperature, especially in a modulator for GC×GC. The device comprises one or more V-shaped seats in which the column is housed, and pushed within the groove.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: February 3, 2009
    Assignee: Thermo Electron S.p.A.
    Inventors: Giacinto Zilioli, Daniela Cavagnino, Tiziano Bosaglia
  • Patent number: 7468095
    Abstract: A system for controlling the flow rate into a chromatographic column is disclosed generally comprising communicating a fluid to the column through a transfer line, measuring the transfer line inlet pressure, determining the transfer line outlet pressure, and adjusting the applied pressure until the inlet and outlet pressures produce a desired flow rate for the transfer line outlet. In certain embodiments, the applied pressure is adjusted by controlling a proportional valve. In some embodiments, the outlet pressure is determined by measuring the pressure difference across the transfer line and calculating the transfer line outlet pressure from the measured inlet pressure and the pressure difference.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: December 23, 2008
    Assignee: PerkinElmer LAS, Inc.
    Inventors: Andrew Tipler, Richard G Edwards
  • Publication number: 20080257150
    Abstract: Processes for removing inorganic impurities from HCl-containing gases, which processes comprise: providing a crude gas stream comprising hydrogen chloride and at least one inorganic component; introducing the crude gas stream into an adsorber bed; adsorbing at least a portion of the at least one inorganic component from the crude gas stream on the adsorber bed to form a purified HCl gas, and removing the purified HCl gas from the adsorber bed.
    Type: Application
    Filed: April 16, 2008
    Publication date: October 23, 2008
    Applicant: Bayer MaterialScience AG
    Inventors: Aurel Wolf, Oliver Felix-Karl Schluter
  • Publication number: 20080237131
    Abstract: The present invention relates to methods and systems for purifying gases, such as for example semiconductor process gases. The invention more particularly relates to fluid purification methods and systems having improved heat transfer capabilities and controls such that the purified fluid produced from the process contains reduced impurity levels and/or exhibits more uniform concentrations within the final product. In another aspect of the invention, the activation time for adsorbent beds used in such processes and systems can be reduced.
    Type: Application
    Filed: March 29, 2007
    Publication date: October 2, 2008
    Inventors: Lloyd Anthony Brown, Thomas Justin Thompson
  • Publication number: 20080196584
    Abstract: An improved process for the separation of carbon dioxide from the flue gas of an oxy-combustion power plant is provided. An inlet stream containing carbon dioxide and oxygen is at least partially condensed in the reboiler of a stripping column. The condensed inlet stream is then separated in a separator, thereby producing a first liquid stream and a first gas stream. The first liquid stream is then separated into a top gas stream and a bottom liquid stream in the stripping column. The top gas stream is then warmed by indirect heat exchange in the heat exchanger.
    Type: Application
    Filed: April 2, 2007
    Publication date: August 21, 2008
    Inventor: Bao HA
  • Publication number: 20080196583
    Abstract: An improved process for the separation of carbon dioxide from the flue gas of an oxy-combustion power plant is provided. The flue gas is compressed, cleaned, cooled and dried. This flue gas stream contains carbon dioxide and oxygen, and is sent to a column. This column may be a distillation column or a stripping column. This column separates the inlet stream into a top gas stream and a bottom liquid stream. The top gas from the column is combined with the inlet stream.
    Type: Application
    Filed: April 2, 2007
    Publication date: August 21, 2008
    Inventor: Bao HA
  • Patent number: 7409850
    Abstract: An improved gas chromatograph system includes a radiant source, an insert located to receive an output of the radiant source, and an analytic column wound on a concave surface of the insert so that successive coils of the wound analytic column are in direct contact with each other and exert an outward pressure on the concave surface of the insert such that the outward pressure minimizes a gap between the analytic column and the concave surface of the insert so as to minimize thermal gradients and maximize heat transfer to the analytic column.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: August 12, 2008
    Assignee: Agilent Technologies, Inc
    Inventor: Sammye E. Traudt
  • Publication number: 20080121103
    Abstract: The present invention relates to a three dimensional preconcentrator and inlet heater. The preconcentrator consists of a substrate with passageways, a conductive material coated to the top and the bottom of the substrate and an adsorbent coating covering the entire substrate. This substrate is suspended in a holding frame by a connecting bridge. The preconcentrator may also include a resistor and a proportional-integral-differential controller. The device may be used inline with a detector and can be retrofitted to existing devices. An array of preconcentrators may also be formed. The invention also relates to methods of use of the preconcentrator and methods of manufacture. A method of use includes contacting an analyte and a preconcentrator, allowing the analyte to adsorb to the preconcentrator and then desorbing the analyte. A method of manufacture involves applying the adsorbent coating by misted chemical deposition.
    Type: Application
    Filed: December 10, 2007
    Publication date: May 29, 2008
    Inventors: Paul Boyle, David Ruiz-Alonzo, Andrew Koehl, Martyn Rush, Russell Parris, Ashley Wilks
  • Patent number: 7361208
    Abstract: Methods and systems for cooling gas chromatography ovens that comprise a housing having a fluid entry and a sleeve positioned within the housing to provide a fluid gap between the inner surface of the housing and the outer surface of the sleeve, where the sleeve is coupled to the fluid entry, and where a cooling fluid from the fluid entry traverses the inner layer of the sleeve and thereafter the outer layer of the sleeve via the fluid gap. In one embodiment, the housing includes at least one adjustable fluid exit, and the fluid gap is in fluid communications with the fluid exit(s). The fluid entry and the sleeve can be concentric, and the sleeve can include a heating element. A fan can be positioned to drive the cooling fluid from the fluid entry.
    Type: Grant
    Filed: May 4, 2005
    Date of Patent: April 22, 2008
    Assignee: PerkinElmer LAS, Inc.
    Inventors: Jim Botelho, Stephen Pignataro, Jr., John Mezzoni, John H. Vanderhoef
  • Publication number: 20080028930
    Abstract: An automated system for processing a liquid test sample is provided.
    Type: Application
    Filed: August 1, 2007
    Publication date: February 7, 2008
    Applicant: Brooks Rand LLC
    Inventor: Paul Danilchik
  • Patent number: 7311757
    Abstract: An analyte pre-concentrator for gas chromatography is disclosed generally comprising a tube having a restricted outlet and packed with an adsorbent, wherein the tube serves as the liner of a chromatographic injector, as an adsorbent trap coupled to a chromatographic column, and/or as an adsorbent trap coupled to a headspace sampler. Preferably, a heating device allows the tube to be heated. In a preferred embodiment, the analyte pre-concentrator further comprises a column isolating accessory so that a chromatographic column can be temporarily isolated from substances flowing through the tube.
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: December 25, 2007
    Assignee: PerkinElmer LAS, Inc.
    Inventors: Andrew Tipler, Gary Campbell, Mark Collins
  • Patent number: 7306656
    Abstract: The invention relates to a gas chromatography apparatus with a cooling device, wherein the cooling device includes a closed cooling circuit containing a refrigerant, so that no refrigerant is wasted.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: December 11, 2007
    Assignee: Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V.
    Inventors: Lutz Lange, Frank Helleis, Jonathan Williams, Thomas Kenntner
  • Patent number: 7303610
    Abstract: Chromatography column assembly of the direct heating type, comprising at least a capillary column, at least a tubular structure which envelops the capillary column and is coaxial with it, means to directly heat the column, means to detect the temperature of the column and one or more electrically insulating covering elements, wherein the tubular structure comprises a plurality of tubular meshes each formed of a plurality of filaments woven together (FIG. 3).
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: December 4, 2007
    Assignee: Thermo Electron S.p.A.
    Inventors: Giacinto Zilioli, Riccardo Facchetti, Paolo Magni
  • Patent number: 7291203
    Abstract: A method is disclosed for performing GC separations using a separation protocol including at least one negative temperature ramp, where the negative temperature ramp is controlled either by the introduction of a gaseous coolant at a controlled and adjustable rate or by the introduction of the coolant along with the application of microwave radiation to a column capable of absorbing microwave radiation, where the rate of coolant introduction or the rate of coolant introduction and radiation introduction is sufficient to achieve a desired rate of cooling.
    Type: Grant
    Filed: March 10, 2004
    Date of Patent: November 6, 2007
    Assignee: Petroleum Ana Ryzes Company LP
    Inventors: John S. Crnko, Scott K. Warren
  • Patent number: 7273517
    Abstract: A non-planar microfabricated gas chromatography column comprises a planar substrate having a plurality of through holes, a top lid and a bottom lid bonded to opposite surfaces of the planar substrate, and inlet and outlet ports for injection of a sample gas and elution of separated analytes. A plurality of such planar substrates can be aligned and stacked to provide a longer column length having a small footprint. Furthermore, two or more separate channels can enable multi-channel or multi-dimensional gas chromatography. The through holes preferably have a circular cross section and can be coated with a stationary phase material or packed with a porous packing material. Importantly, uniform stationary phase coatings can be obtained and band broadening can be minimized with the circular channels. A heating or cooling element can be disposed on at least one of the lids to enable temperature programming of the column.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: September 25, 2007
    Assignee: Sandia Corporation
    Inventors: Patrick R. Lewis, David R. Wheeler
  • Patent number: 7267709
    Abstract: Disclosed are systems and methods that include providing a vessel having an adsorbent disposed therein, the vessel having an inlet and an outlet for communicating a carrier gas through the vessel; determining a differential pressure between the inlet and the outlet for a known flow rate at the outlet; and, determining a geometric measure for the vessel based on a ratio of the known flow rate and the differential pressure. In some embodiments, the methods and systems can include a viscosity in the ratio, determining a flow rate at ambient pressure using a factor based on a ratio of a gas pressure at the output and ambient pressure, and/or, determining a flow rate at ambient temperature using a factor based on a ratio of a temperature at the output and ambient temperature.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: September 11, 2007
    Assignee: PerkinElmer LAS, Inc.
    Inventors: Andrew Tipler, Neil T. Plant
  • Patent number: 7260978
    Abstract: A gas chromatography/mass spectrometry system includes two sample introduction parts, a gas chromatography part having two columns, a column oven for housing the two columns in a parallel configuration, an interface part through which an outlet end of each of the two columns is inserted, and a mass spectrometry part. The mass spectrometry part has an ionization chamber to which the outlet ends of the columns inserted through the interface part are connected, a mass separation part, an ion detector, and a vacuum chamber for housing the ionization chamber, the mass separation part, and the detector. Because the outlet ends of the parallel columns are both connected to the ionization chamber, the carrier gas flow and line velocity are the same as though there is one column, thereby avoiding line stagnation. Since analyses can be performed selectively with a single system, results having high reliability and precision can be obtained.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: August 28, 2007
    Assignee: Shimadzu Corporation
    Inventor: Haruhiko Miyagawa