Patents Assigned to Air Products and Chemicals, Inc.
  • Patent number: 11512897
    Abstract: A process for recovering at least one fluid (e.g. argon gas and/or nitrogen gas, etc.) from a feed gas (e.g. air) can include utilization of a compression system, primary heat exchanger unit, plant processing units to separate and recover at least one desired fluid (e.g. nitrogen gas, argon gas, etc.). In some embodiments, the process can be configured so that fluid flows output from a low pressure column and/or high pressure column of the plant can provide a condensation duty or refrigeration duty that is utilized to process certain fluid flows for recovery of argon and/or nitrogen gases. Some embodiments can be configured to provide an improved recovery of argon and/or nitrogen as well as an improvement in operational efficiency by reducing an amount of power (e.g. electrical power) needed to recover the nitrogen and/or argon.
    Type: Grant
    Filed: January 14, 2021
    Date of Patent: November 29, 2022
    Assignee: Air Products and Chemicals, Inc.
    Inventors: D. Michael Herron, Alan D. Berger
  • Patent number: 11499775
    Abstract: Described herein are methods and systems for liquefying natural gas using an open-loop natural gas refrigeration cycle; coil wound heat exchanger units suitable for cooling one or more feed streams, such as for example one or more natural gas feed streams, via indirect heat exchange with a gaseous refrigerant; and methods and systems for removing heavy components from a natural gas prior to liquefying the natural gas using an open-loop natural gas refrigeration cycle.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: November 15, 2022
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Mark Julian Roberts, John A. Dally
  • Publication number: 20220357104
    Abstract: A process for recovering at least one fluid (e.g. xenon gas and/or krypton gas, etc.) from a feed gas can include utilization of a compression system, primary heat exchanger unit, a pre-purification unit (PPU), and other units to separate and recover at least one desired fluid. In some embodiments, fluid flows output from a first heat exchanger or separation system of the plant can be split so that a portion of a stream is output for downstream processing to purify xenon (Xe) and/or krypton (Kr) product flow(s) while another portion of the stream is recycled to a compression system or the PPU to undergo further purification and heat exchange so that the product output for downstream processing has a higher concentration of Xe or Kr. Some embodiments can be configured to provide an improved recovery of Xe and/or Kr as well as an improvement in operational efficiency.
    Type: Application
    Filed: May 6, 2021
    Publication date: November 10, 2022
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Declan Patrick O'Connor, Garret C. Lau
  • Publication number: 20220359858
    Abstract: A method and apparatus for controlling the atmosphere of a multizone calcination (firing) furnace for production of high-quality nickel-rich cathode material for lithium-ion and solid-state batteries. A high-quality oxygen-rich atmosphere is maintained to ensure the quality of the cathode material. An atmosphere control system continuously measures and analyzes the composition of the calcination furnace atmosphere in different zones and adjusts the flowrate of oxygen-rich atmosphere into the furnace to optimize the calcination process.
    Type: Application
    Filed: May 7, 2021
    Publication date: November 10, 2022
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Jingjing Cai, Paulina Weronika Kus, Liang He, Guido Plicht, David Millington
  • Patent number: 11480389
    Abstract: A liquefaction system is capable of sequentially or simultaneously liquefying multiple feed streams of hydrocarbons having different normal bubble points with minimal flash. The liquefying heat exchanger has separate circuits for handling multiple feed streams. The feed stream with the lowest normal boiling point is sub-cooled sufficiently to suppress most of the flash. Feed streams with relatively high normal boiling points are cooled to substantially the same temperature, then blended with bypass streams to maintain each product near its normal bubble point. The system can also liquefy one stream at a time by using a dedicated circuit or by allocating the same feed to multiple circuits.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: October 25, 2022
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Laurent Marc Brussol, David Joseph Holzer, Sylvain Vovard, Russell Shnitser, Adam Adrian Brostow, Mark Julian Roberts
  • Publication number: 20220331737
    Abstract: A process for capturing carbon dioxide in which an exhaust stream containing carbon dioxide is cooled by a plurality of stages of indirect heat exchange to produce a cooled exhaust stream, compressed over a plurality of stages of compression, and separated to produce a CO2-enriched stream and a CO2-depleted stream. The CO2-enriched stream is dehydrated by contacting the CO2-enriched stream with a regenerated desiccant to produce a CO2 product stream and a spent desiccant. The CO2-depleted stream is heated by indirect heat exchange against the exhaust stream to produce a hot CO2-depleted stream, while a portion of the CO2-depleted stream is extracted from an interstage of the plurality of stages of indirect heat exchange to regenerate the spent desiccant. The hot CO2-depleted stream is expanded over a plurality of stages of expansion to drive the compression of the cooled exhaust, thereby producing an expanded CO2-depleted stream.
    Type: Application
    Filed: September 25, 2020
    Publication date: October 20, 2022
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Joseph DiPietro, Joseph Moate, Ugur Guner
  • Patent number: 11471818
    Abstract: A radial flow adsorption vessel comprising a cylindrical outer shell having a top end and a bottom end, the top end is enclosed by a vessel head that provides a centrical opening usable as a port to introduce or remove adsorbent particles into or from the vessel; at least one annular adsorption space disposed inside the shell, the at least one annular adsorption space defined by an outer and inner cylindrical porous wall, both co-axially disposed inside the shell; and a loading device for the adsorbent particles positioned above the at least one annular adsorption space at the top end of the vessel, the loading device comprises at least one conical element that extends radially to the outer cylindrical porous wall, the at least one conical element provides a plurality of orifices arranged at least in a region sitting above the at least one annular adsorption space.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: October 18, 2022
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Micah S. Kiffer, William Eric Karlson
  • Patent number: 11460246
    Abstract: Xenon and/or krypton is separated from a liquid oxygen stream comprising oxygen and xenon and/or krypton in a process comprising providing at least a portion of the liquid oxygen stream as a reflux liquid to the top of a rare gas recovery column operated at a pressure of between 5 to 25 bara, vaporizing a reboiler liquid in the reboiling zone in the bottom of the rare gas recovery column to produce a mixture of a rising vapor and a xenon and/or krypton-enriched liquid stream; and contacting the rising vapor with the reflux liquid in at least one distillation zone of the column to effect stripping xenon and/or krypton from the rising vapor to the reflux liquid. The process provides a recovery of xenon of greater than 90% and a krypton recovery of 15% to 90%.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: October 4, 2022
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Xukun Luo, Alan D. Berger, Donn Michael Herron
  • Patent number: 11453950
    Abstract: A method for supplying hydrogen gas for consumption in at least one downstream process, the method comprising: electrolysing water to provide hydrogen gas; compressing the hydrogen gas in a multistage compression system to provide compressed hydrogen gas; and feeding at least a portion of the compressed hydrogen gas to the downstream process(es); wherein the multistage compression system comprises at least one centrifugal compression stage; wherein the hydrogen gas is dosed with nitrogen gas upstream of the centrifugal compression stage(s); and wherein the nitrogen gas is present in the compressed hydrogen gas when fed to the downstream process(es).
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: September 27, 2022
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Joseph Gerard Wehrman, Paul Higginbotham, Vincent White
  • Publication number: 20220299263
    Abstract: A method of constructing a coil wound heat exchange module and transporting and installing the coil wound heat exchange module at a plant site, such as an natural gas liquefaction plant. A module frame is constructed and attached to a heat exchanger shell prior to telescoping of a coil wound mandrel into the shell. The module frame includes a lug and two saddles that remain attached to the shell throughout the process and when the heat exchanger is operated. The lug and saddles are constructed and located to stabilize the shell during construction, telescoping and transport (when in a horizontal orientation), and when the shell is installed at the plant site (in a vertical orientation). The lugs and saddles are adapted to allow for thermal expansion and contraction of the shell when it is transitioned from ambient to operating temperature and vice versa.
    Type: Application
    Filed: June 9, 2022
    Publication date: September 22, 2022
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Joseph E. Voda, Adam R. Garcia, Kevin E. Tiemann, Christopher J. Ranella, Paul I. Debrah, John A. Dally
  • Publication number: 20220290309
    Abstract: A process for producing compressed hydrogen gas, said process comprising electrolysing water to produce hydrogen gas and compressing said hydrogen gas in a multistage compression system to produce compressed hydrogen gas. The multistage compression system comprises at least one centrifugal compression stage, and the hydrogen gas is fed to the centrifugal compression stage at a pre-determined feed temperature and pressure and having a pre-determined relative humidity. The process further comprises adding water and heat to the hydrogen gas upstream of the centrifugal compression stage, as required, to humidify the hydrogen gas to the pre-determined relative humidity.
    Type: Application
    Filed: March 15, 2021
    Publication date: September 15, 2022
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Joseph Gerard Wehrman, Paul Higginbotham, Vincent White
  • Publication number: 20220290691
    Abstract: A process for producing compressed hydrogen gas including: electrolysing water to produce hydrogen gas, and compressing the hydrogen gas in a multistage compression system including: a centrifugal compression stage and a recycle system for recycling a portion of the hydrogen gas from a product end to a feed end of the centrifugal compression stage; wherein hydrogen gas feed is fed to the feed end at a pre-determined feed temperature and pressure and mole fraction of water; wherein a portion of the hydrogen gas is removed from the product end, reduced in pressure in the recycle system to the pre-determined feed pressure and is then recycled to form at least part of the hydrogen gas feed to the centrifugal compression stage; and further including cooling hydrogen gas comprising the reduced pressure hydrogen gas such that the water mole fraction in the hydrogen gas feed is at the pre-determined water mole fraction.
    Type: Application
    Filed: March 15, 2021
    Publication date: September 15, 2022
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Joseph Gerard Wehrman, Paul Higginbotham, Vincent White
  • Publication number: 20220290310
    Abstract: A method for supplying hydrogen gas for consumption in at least one downstream process, the method comprising: electrolysing water to provide hydrogen gas; compressing the hydrogen gas in a multistage compression system to provide compressed hydrogen gas; and feeding at least a portion of the compressed hydrogen gas to the downstream process(es); wherein the multistage compression system comprises at least one centrifugal compression stage; wherein the hydrogen gas is dosed with nitrogen gas upstream of the centrifugal compression stage(s); and wherein the nitrogen gas is present in the compressed hydrogen gas when fed to the downstream process(es).
    Type: Application
    Filed: March 15, 2021
    Publication date: September 15, 2022
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Joseph Gerard Wehrman, Paul Higginbotham, Vincent White
  • Patent number: 11439946
    Abstract: An adsorbent vessel for removing contaminants from a feed gas upstream from a cryogenic distillation process using pressure swing adsorption, temperature swing adsorption, or thermal-pressure swing adsorption. The adsorbent vessel having an adsorbent bed comprised of multiple layers of adsorbent material, including two layers of adsorbent material that selective adsorbs carbon dioxide. Each of the two layers is formed from an adsorbent material having a different capacity for adsorbing carbon dioxide.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: September 13, 2022
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Nasim Ul Hassan Malik, King Wai Hung, Gowri Krishnamurthy, William T. Kleinberg, Garrett C. Lau, Edward Landis Weist, Jr.
  • Patent number: 11441206
    Abstract: A system and method of controlling a metal melting process in a melting furnace, including determining at least one furnace parameter characterizing a melting furnace, adding a charge containing solid metal into the melting furnace, detecting at least one charge parameter characterizing the charge, firing a burner into the melting furnace to provide heat to melt the charge, and exhausting burner combustion products from the furnace, detecting at least one process parameter characterizing progress of melting the charge, calculating a furnace efficiency based on the at least one furnace parameter, calculating a predicted process pour readiness time based on the at least one charge parameter, the at least one process parameter, and the furnace efficiency, and controlling the metal melting process based on the predicted process pour readiness time.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: September 13, 2022
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Shailesh Pradeep Gangoli, Avishek Guha, Anshu Gupta, Reed Jacob Hendershot, Michael J. Gallagher, Martin Lawrence, Petr Tlamicha
  • Publication number: 20220283575
    Abstract: There is provided a method of monitoring operational characteristics of an industrial gas plant complex comprising a plurality of industrial gas plants. The method being executed by at least one hardware processor and comprising: assigning a machine learning model to each of the industrial gas plants forming the industrial gas plant complex; training the respective machine learning model for each industrial gas plant based on received historical time-dependent operational characteristic data for the respective industrial gas plant; executing the trained machine learning model for each industrial gas plant to predict operational characteristics for each respective industrial gas plant for a pre-determined future time period; and comparing predicted operational characteristic data for each respective industrial gas plant for a pre-determined future time period with measured operational characteristic data for the corresponding time period to identify deviations in industrial gas plant performance.
    Type: Application
    Filed: March 5, 2021
    Publication date: September 8, 2022
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Sanjay Mehta, Pratik Misra
  • Publication number: 20220285938
    Abstract: There is provided a method of determining and utilizing predicted available power resources from one or more renewable power sources for one or more industrial gas plants comprising one or more storage resources. The method is executed by at least one hardware processor and comprises: obtaining historical time-dependent environmental data associated with the one or more renewable power sources; obtaining historical time-dependent operational characteristic data associated with the one or more renewable power sources; training a machine learning model based on the historical time-dependent environmental data and the historical time-dependent operational characteristic data; executing the trained machine learning model to predict available power resources for the one or more industrial gas plants for a pre-determined future time period; and controlling the one or more industrial gas plants in response to the predicted available power resources for the pre-determined future time period.
    Type: Application
    Filed: March 5, 2021
    Publication date: September 8, 2022
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Sanjay Mehta, Pratik Misra
  • Publication number: 20220283567
    Abstract: There is provided a method of controlling an industrial gas plant complex comprising a plurality of industrial gas plants powered by one or more renewable power sources, the method being executed by at least one hardware processor, the method comprising receiving time-dependent predicted power data for a pre-determined future time period from the one or more renewable power sources; receiving time-dependent predicted operational characteristic data for each industrial gas plant; utilizing the predicted power data and predicted characteristic data in an optimization model to generate a set of state variables for the plurality of industrial gas plants; utilizing the generated state variables to generate a set of control set points for the plurality of industrial gas plants; and sending the control set points to a control system to control the industrial gas plant complex by adjusting one or more control set points of the industrial gas plants.
    Type: Application
    Filed: March 5, 2021
    Publication date: September 8, 2022
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Sanjay Mehta, Pratik Misra
  • Publication number: 20220268444
    Abstract: A hydrogen injection scheme can be employed via use of one or more injectors for injecting hydrogen to help entrain local mass while also generating local turbulence that can enhance mixing with a mixture of air and fuel to facilitate enhanced lean combustion, lower peak flame temperatures of combustion, and reduce nitrous oxide (NOx) emissions from the combustion of fuel. In some embodiments, the hydrogen can be injected to help transport heat released during combustion away from the injector to help avoid injector overheating as well. Different injectors can be utilized to provide a desired hydrogen injection scheme for a particular set of design and operational criteria for a gas turbine system or at least one combustion system that can be utilized in a gas turbine system.
    Type: Application
    Filed: February 23, 2022
    Publication date: August 25, 2022
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Mark Daniel D'Agostini, Anup Vasant Sane
  • Publication number: 20220252341
    Abstract: Integration of a natural gas liquefaction system, a hydrogen production system, and power generation system to increase CO2 capture and improve overall plant efficiency. The predominantly methane endflash is sent to the hydrogen production system which produces hydrogen and CO2. The CO2 may be captured or beneficially used. At least a portion of the hydrogen produced is used to fuel gas turbines in the power generation which, in turn, provides power for the refrigeration compressor of the natural gas liquefaction system—either in the form of mechanical work or electricity.
    Type: Application
    Filed: February 5, 2021
    Publication date: August 11, 2022
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Annemarie Ott Weist, Jeremy D. Beard, David Ross Graham, John Eugene Palamara, Mark Julian Roberts, Dejan Veskovic