Patents Assigned to Praxair Technology, Inc.
  • Patent number: 11202457
    Abstract: Particulate material is cooled by passing into the material a coolant stream of liquid nitrogen having a gaseous product around at least a portion of the liquid nitrogen, wherein the coolant stream is formed outside the particulate material in a nozzle body from which the coolant stream is passed into the particulate material.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: December 21, 2021
    Assignee: Praxair Technology, Inc.
    Inventors: John M Girard, Soujanya N Jampala, Balazs Hunek, Yeu-Chuan Simon Ho, Richard N Hasty, Steven McCarty
  • Patent number: 11193708
    Abstract: Manual and automated methods of pre-charging an empty or partially empty insulated container with CO2 snow are provided. A first location such as a charging location charges CO2 liquid into a container to create a pre-charged container with CO2 snow. The charging location prepares the pre-charged container for delivery to a second location, either by itself, or through a third party. The second location may be a clinical site, which upon receipt of the pre-charged container, loads a perishable item such as a biological sample into the pre-charged container. A user receives the pre-charged container with perishable item and removes the perishable item from the pre-charger container for testing (e.g., biological testing). Depending on the level of depletion of the CO2 snow in the pre-charged container, the user returns the depleted container to the first location or the intermediate location.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: December 7, 2021
    Assignee: Praxair Technology, Inc.
    Inventors: Robert Sever, Ranko Bursac, Ying Zhou
  • Patent number: 11178889
    Abstract: When a food processing vessel under vacuum is repressurized, the tendency of product in the vessel to be forced into feed lines is relieved or overcome by establishing an effectively high pressure in the feed lines.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: November 23, 2021
    Assignee: Praxair Technology, Inc.
    Inventors: John M Girard, Sameer H Israni
  • Patent number: 11137204
    Abstract: The present invention relates to a cold box cycle which allows for independent control of the heat supplied for reboilers associated with the separation columns. More specifically, the invention relates to the tight control of the hydrogen removal separation, thus avoiding the possibility of excess reboiling in this separation. Optimal reboiling also results in a lower temperature of the hydrogen depleted liquid from this separation. As this stream is used to provide a portion of the cooling at the cold end of the primary heat exchanger, lower temperatures facilitate cooling of the incoming syngas feed, reducing carbon monoxide (CO) losses into the crude hydrogen stream from the high pressure separator. Lower CO in the crude hydrogen allows for smaller hydrogen purification equipment.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: October 5, 2021
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Minish M.. Shah, Bryan S. Kalp, Gary W. Fenner, Sameer Parvathikar
  • Patent number: 11136238
    Abstract: The present invention generally relates to an oxygen transport membrane syngas panel whereby the reformer layer of the panel is eliminated, and the primary reforming function is integrated into the manifold as a gas heated reformer with product syngas as the source of heat.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: October 5, 2021
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Sean M. Kelly, Ines C. Stuckert
  • Patent number: 11130676
    Abstract: The present invention relates to reactor tubes packed with a catalyst system employed to deliberately bias process gas flow toward the hot tube segment and away from the cold segment in order to reduce the circumferential tube temperature variation.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: September 28, 2021
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Kelly Nicholson, Troy M Raybold, Bo Jin
  • Patent number: 11118945
    Abstract: An adjustable device for mounting an angular position sensor such as an encoder to a large diameter rotating shaft such as a motor shaft is provided. The adjustable device includes a specially configured alignment plate, a coupling shaft, a spherical joint, and a plurality of fixing bolts and adjustment screws that are disposed symmetrically on the adjustment plate and radially offset from the shaft rotation axis. The fixing bolts and adjustment screws are generally disposed the same radial distance from the central rotation axis.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: September 14, 2021
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventor: Jorge Armando Mendez
  • Patent number: 11110424
    Abstract: A top-fired reformer box is provided. The top-fired reformer box includes a burner row, a tube row, a reformer tunnel including a closed end, an open end, and a plurality of tunnel ports formed along a side wall of the reformer tunnel, the plurality of tunnel ports including a one or more tunnel port located along the side of the tunnel, and a flow resistor positioned at least one tunnel port applying a flow resistance for flue gas entering the reformer tunnel via the at least one tunnel port such that uniform flow is achieved within the reformer tunnel.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: September 7, 2021
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Monica Zanfir, Bo Jin, Minish Mahendra Shah
  • Patent number: 11098402
    Abstract: A novel method, composition and storage and delivery container for using antimony-containing dopant materials are provided. The composition is selected with sufficient vapor pressure to flow at a steady, sufficient and sustained flow rate into an arc chamber as part of an ion implant process. The antimony-containing material is represented by a non-carbon containing chemical formula, thereby reducing or eliminating the introduction of carbon-based deposits into the ion chamber. The composition is stored in a storage and delivery vessel under stable conditions, which includes a moisture-free environment that does not contain trace amounts of moisture. The storage and delivery container is specifically designed to allow delivery of high purity, vapor phase antimony-containing dopant material at a steady, sufficient and sustained flow rate.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: August 24, 2021
    Assignee: Praxair Technology, Inc.
    Inventors: Aaron Reinicker, Ashwini K Sinha, Douglas C. Heiderman
  • Patent number: 11098894
    Abstract: A burner that is useful for providing a melting flame whose axis can be altered during operation, and for providing a supersonic jet of oxidant that can penetrate through the surface of the molten material, has a unique combination of features including a specially contoured flame collar at its open discharge end.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: August 24, 2021
    Assignee: Praxair Technology, Inc.
    Inventors: Megha Jampani, Bryan R Bielec, Larry E Cates, Joseph A Maiolo, Stephen A Manley
  • Patent number: 11085688
    Abstract: This invention relates to a novel two-stage dry ice system for preserving perishable items during transport and methods thereof. The improved two-stage dry ice system includes dry ice and a phase change material specifically configured within a single and continuous holding volume with perishable items. Preservation of the perishable items for extended durations in comparison to other refrigeration techniques can be achieved as a result of the two-stage dry system having the ability to re-orient itself during transport.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: August 10, 2021
    Assignee: Praxair Technology, Inc.
    Inventors: Chang Yup Seo, Soujanya N Jampala, Sameer H Israni, Robert R Sever
  • Patent number: 11079283
    Abstract: A method for measuring furnace temperatures. The method includes obtaining radiance measurements from a plurality of regions of interest (ROIs) using a plurality of thermal imaging cameras, and measuring a surface temperature using a radiance measurement obtained from an ROI selected from the plurality of ROIs. Measuring the surface temperature includes determining an effective background radiance affecting the selected ROI using radiance measurements obtained from ROIs different from the selected ROI, obtaining a compensated radiance by removing the effective background radiance from the radiance measurement obtained from the selected ROI, and converting the compensated radiance to the measured surface temperature.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: August 3, 2021
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Tim Patrick Dubbs, John Leonard Shaver, Kreg James Kelley, Troy M Raybold, Tushar Vispute
  • Patent number: 11076620
    Abstract: Disclosed are methods and apparatus for forming frozen food products, especially frozen foamed food products wherein the products contain bubbles having a reduced average size preferably in a narrow size range or contain ice crystals having reduced size.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: August 3, 2021
    Assignee: Praxair Technology, Inc.
    Inventors: Sameer H. Israni, Balazs Hunek, Theodore H. Gasteyer, III, Gary D. Lang
  • Patent number: 11052353
    Abstract: A method is described of producing a catalyst-containing composite oxygen ion membrane and a catalyst-containing composite oxygen ion membrane in which a porous fuel oxidation layer and a dense separation layer and optionally, a porous surface exchange layer are formed on a porous support from mixtures of (Ln1?xAx)wCr1?yByO3?? and a doped zirconia. Adding certain catalyst metals into the fuel oxidation layer not only enhances the initial oxygen flux, but also reduces the degradation rate of the oxygen flux over long-term operation. One of the possible reasons for the improved flux and stability is that the addition of the catalyst metal reduces the chemical reaction between the (Ln1?xAx)wCr1?yByO3?? and the zirconia phases during membrane fabrication and operation, as indicated by the X-ray diffraction results.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: July 6, 2021
    Assignee: Praxair Technology, Inc.
    Inventors: Zigui Lu, Yunxiang Lu, Gervase Maxwell Christie, Jonathan A. Lane, Pawel J. Plonczak, Joseph M. Corpus
  • Patent number: 11047517
    Abstract: A modular, aerogel-based vacuum insulated pipe section comprising an outer conduit; an inner conduit concentrically disposed within the outer conduit with aerogel insulation and a condensable gas being disposed in the insulation space between the concentric conduits. As a stand-alone pipe section, the insulation space is at a pressure within the range of from about 100 microns Hg to about 1000 microns Hg. However, in operation, when a cryogenic fluid is traversing the inner conduit, the condensable gas condenses and the pressure within the insulation space is further reduced to range of from about 1 microns Hg to about 5 microns Hg. The vacuum insulated pipe section further includes a coupling arrangement disposed on a first end of the inner conduit and a second end of the inner conduit, the coupling arrangement configured to engage or mate with a corresponding end of another modular vacuum insulated pipe section.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: June 29, 2021
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Aditya Vaze, Seth A. Potratz
  • Patent number: 11040417
    Abstract: The present invention relates generally to welding gas compositions used as shielding gases in an electric arc welding process. More particularly, the invention is directed a shielding gas compositions used in gas metal or tungsten metal arc welding processes for welding aluminum or aluminum alloy containing work pieces. The compositions comprise from 200 to less than 400 ppm oxygen; from 200 to less than 400 ppm of a second gas selected from nitrous oxide, nitrogen, and combinations thereof; and the remainder being an inert gas preferably selected from argon, helium, and mixtures thereof.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: June 22, 2021
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Philip L. Miller, Kevin A. Lyttle, Jeremy B. Neff, Douglas A. Steyer, Keith G. Pierce
  • Patent number: 11034630
    Abstract: Organic sulfur compounds contained in refinery off gas streams having either high ort low concentrations of olefins are converted to hydrogen sulfides which can be then be removed using conventional amine treating systems. The process uses a catalytic reactor with or without a hydrotreater depending on the olefin concentration of the off gas stream. The catalytic reactor operates in a hydrogenation mode or an oxidation mode to convert a majority of organic sulfur compounds into hydrogen sulfides.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: June 15, 2021
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Minish Mahendra Shah, Raymond Francis Drnevich, Vasilis Papavassiliou
  • Patent number: 11021667
    Abstract: The present invention relates to a method for conditioning a soot-containing syngas stream in a single integrated apparatus containing a scrubbing vessel wherein particulate matter is decoupled from the waste water stream.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: June 1, 2021
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Luke Coleman, Minish Mahendra Shah, Joseph Schwartz, Jerome Jankowiak
  • Patent number: 11014039
    Abstract: The present invention relates to a novel integrated system for providing nitrogen (N2) to a variety of industrial service applications such as, for example, process unit drying, pipeline purging, reactor cooling, vessel inerting, pipeline displacement.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: May 25, 2021
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Richard M Kelly, Mahesh Biradar, Matthew J Thomas, George Cieutat
  • Patent number: 10994251
    Abstract: A device (1) for dissolving a gas (G) in water (W) is provided, and includes a housing (100) configured to be submerged into the water (W) with the housing (100) having at least one water inlet (101), a gas inlet (102) and at least one water outlet (103) for discharging gas enriched water out of the housing (100), a pump (5) in fluid communication with the at least one water inlet (10) for sucking water (W) from a surrounding of the housing (100), the pump configured to generate a main water stream (S?), and means for injecting the gas (G) supplied via the gas inlet (102) into the main water stream (S?). The device (1) includes a probe (6) configured to measure a concentration of the gas dissolved in water, and the probe (6) is arranged in the housing (100) of the device (1).
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: May 4, 2021
    Assignee: Praxair Technology, Inc.
    Inventors: Kenneth Glomset, Stefan Dullstein, Thomas Loevold Hellebust, John Bertil Aakernes