Patents by Inventor Edward M. Calverley

Edward M. Calverley has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210229045
    Abstract: A process for separating hydrogen from a gas mixture having hydrogen and a larger gas molecule is comprised of flowing the gas mixture through a carbonized polyvinylidene chloride (PVDC) copolymer membrane having a hydrogen permeance in combination with a hydrogen/methane selectivity, wherein the combination of hydrogen permeance and hydrogen/methane selectivity is (i) at least 30 GPU hydrogen permeance and at least 200 hydrogen/methane selectivity or (ii) at least 10 GPU hydrogen permeance and at least 700 hydrogen/methane selectivity. The carbonized PVDC copolymer may be made by heating and restraining a polyvinylidene chloride copolymer film or hollow fiber having a thickness of 1 micrometer to 250 micrometers to a pretreatment temperature of 100° C. to 180° C. to form a pretreated polyvinylidene chloride copolymer film and then heating and restraining the pretreated polyvinylidene chloride copolymer film to a maximum pyrolysis temperature from 350° C. to 750° C.
    Type: Application
    Filed: April 15, 2021
    Publication date: July 29, 2021
    Applicant: Dow Global Technologies LLC
    Inventors: Junqiang Liu, Douglas E. Beyer, Janet M. Goss, Chan Han, Edward M. Calverley
  • Publication number: 20210229044
    Abstract: A carbonized PVDC copolymer useful for the separation of an olefin from its corresponding paraffin may be made by heating a polyvinylidene chloride copolymer film or hollow fiber having a thickness of 1 micrometer to 20 micrometers to a pretreatment temperature of 100° C. to 180° C. to form a pretreated polyvinylidene chloride copolymer film and then heating the pretreated polyvinylidene chloride copolymer film to a maximum pyrolysis temperature from 350° C. to 750° C. A process for separating an olefin from its corresponding paraffin in a gas mixture is comprised of flowing the gas mixture through the aforementioned carbonized polyvinylidene chloride (PVDC) copolymer to produce a permeate first stream having an increased concentration of the olefin and a second retentate stream having an increased concentration of its corresponding paraffin.
    Type: Application
    Filed: April 14, 2021
    Publication date: July 29, 2021
    Applicant: Dow Global Technologies LLC
    Inventors: Junqiang Liu, Janet M. Goss, Edward M. Calverley, Douglas E. Beyer
  • Patent number: 11007489
    Abstract: A carbonized PVDC copolymer useful for the separation of an olefin from its corresponding paraffin may be made by heating a polyvinylidene chloride copolymer film or hollow fiber having a thickness of 1 micrometer to 20 micrometers to a pretreatment temperature of 100° C. to 180° C. to form a pretreated polyvinylidene chloride copolymer film and then heating the pretreated polyvinylidene chloride copolymer film to a maximum pyrolysis temperature from 350° C. to 750° C. A process for separating an olefin from its corresponding paraffin in a gas mixture is comprised of flowing the gas mixture through the aforementioned carbonized polyvinylidene chloride (PVDC) copolymer to produce a permeate first stream having an increased concentration of the olefin and a second retentate stream having an increased concentration of its corresponding paraffin.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: May 18, 2021
    Assignee: Dow Global Technologies LLC
    Inventors: Junqiang Liu, Janet M. Goss, Edward M. Calverley, Douglas E. Beyer
  • Patent number: 11007488
    Abstract: A process for separating hydrogen from a gas mixture having hydrogen and a larger gas molecule is comprised of flowing the gas mixture through a carbonized polyvinylidene chloride (PVDC) copolymer membrane having a hydrogen permeance in combination with a hydrogen/methane selectivity, wherein the combination of hydrogen permeance and hydrogen/methane selectivity is (i) at least 30 GPU hydrogen permeance and at least 200 hydrogen/methane selectivity or (ii) at least 10 GPU hydrogen permeance and at least 700 hydrogen/methane selectivity. The carbonized PVDC copolymer may be made by heating and restraining a polyvinylidene chloride copolymer film or hollow fiber having a thickness of 1 micrometer to 250 micrometers to a pretreatment temperature of 100° C. to 180° C. to form a pretreated polyvinylidene chloride copolymer film and then heating and restraining the pretreated polyvinylidene chloride copolymer film to a maximum pyrolysis temperature from 350° C. to 750° C.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: May 18, 2021
    Assignee: Dow Global Technologies LLC
    Inventors: Junqiang Liu, Douglas E. Beyer, Janet M. Goss, Chan Han, Edward M. Calverley
  • Publication number: 20210087120
    Abstract: A process for preparing C2 to C5 paraffins includes introducing a feed stream comprising hydrogen gas and a carbon-containing gas into a reaction zone of a reactor, and converting the feed stream into a product stream comprising C2 to C5 paraffins in the reaction zone in the presence of a hybrid catalyst. The hybrid catalyst includes a metal oxide catalyst component and a microporous catalyst component. The metal oxide catalyst component satisfies: an atomic ratio of Cu/Zn from 0.01 to 3.00; an atomic ratio of Cr/Zn from 0.01 to 1.50; and percentage of (Al+Cr) from greater than 0.0 at % to 50.0 at % based on a total amount of metal in the metal oxide catalyst component.
    Type: Application
    Filed: February 7, 2019
    Publication date: March 25, 2021
    Applicant: Dow Global Technologies LLC
    Inventors: Davy L.S. Nieskens, Glenn Pollefeyt, Andrzej Malek, Edward M. Calverley, Peter E. Groenendijk, Aysegul Ciftci Sandikci
  • Patent number: 10646849
    Abstract: A process to prepare a carbon molecular sieve adsorbent composition comprises steps beginning with an activated carbon having specific effective micropore size. The activated carbon is impregnated with monomers or partially polymerized polymer, allowed to complete polymerization, and then carbonized such that the impregnant shrinks the micropores to another specific effective micropore size. Finally, the impregnated/polymerized/carbonized product is annealed at a temperature ranging from 1000° C. to 1500° C., which ultimately and predictably shrinks the micropores to a size ranging from 4.0 Angstroms to 4.3 Angstroms. The invention surprisingly enables fine tuning of the effective micropore size, as well as desirable selectivity, capacity and adsorption rates, to obtain highly desirable carbon molecular sieving capability particularly suited for use in, for example, fixed beds in pressure swing or temperature swing processes to enable propylene/propane separations.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: May 12, 2020
    Assignee: Dow Global Technologies LLC
    Inventors: Junqiang Liu, Chan Han, Janet M. Goss, Edward M. Calverley
  • Patent number: 10239043
    Abstract: Novel carbon molecular sieve (CMS) compositions comprising carbonized vinylidene chloride copolymer having micropores with an average micropore size ranging from 3.0 to 5.0. These materials offer capability in separations of gas mixtures including, for example, propane/propylene; nitrogen/methane; and ethane/ethylene. Such may be prepared by a process wherein vinylidene chloride copolymer beads, melt extruded film or fiber are pretreated to form a precursor that is finally carbonized at high temperature. Preselection or knowledge of precursor crystallinity and attained maximum pyrolysis temperature enables preselection or knowledge of a average micropore size, according to the equation ?=6.09+(0.0275×C)?(0.00233×T), wherein ? is the average micropore size in Angstroms, C is the crystallinity percentage and T is the attained maximum pyrolysis temperature in degrees Celsius, provided that crystallinity percentage ranges from 25 to 75 and temperature in degrees Celsius ranges from 800 to 1700.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: March 26, 2019
    Assignee: Dow Global Technologies LLC
    Inventors: Junqiang Liu, Douglas E. Beyer, Edward M. Calverley, Chan Han
  • Publication number: 20190083939
    Abstract: A carbonized PVDC copolymer useful for the separation of an olefin from its corresponding paraffin may be made by heating a polyvinylidene chloride copolymer film or hollow fiber having a thickness of 1 micrometer to 20 micrometers to a pretreatment temperature of 100° C. to 180° C. to form a pretreated polyvinylidene chloride copolymer film and then heating the pretreated polyvinylidene chloride copolymer film to a maximum pyrolysis temperature from 350° C. to 750° C. A process for separating an olefin from its corresponding paraffin in a gas mixture is comprised of flowing the gas mixture through the aforementioned carbonized polyvinylidene chloride (PVDC) copolymer to produce a permeate first stream having an increased concentration of the olefin and a second retentate stream having an increased concentration of its corresponding paraffin.
    Type: Application
    Filed: March 14, 2017
    Publication date: March 21, 2019
    Inventors: Junqiang Liu, Janet M. Goss, Edward M. Calverley, Douglas E. Beyer
  • Publication number: 20190076793
    Abstract: A process for separating hydrogen from a gas mixture having hydrogen and a larger gas molecule is comprised of flowing the gas mixture through a carbonized polyvinylidene chloride (PVDC) copolymer membrane having a hydrogen permeance in combination with a hydrogen/methane selectivity, wherein the combination of hydrogen permeance and hydrogen/methane selectivity is (i) at least 30 GPU hydrogen permeance and at least 200 hydrogen/methane selectivity or (ii) at least 10 GPU hydrogen permeance and at least 700 hydrogen/methane selectivity. The carbonized PVDC copolymer may be made by heating and restraining a polyvinylidene chloride copolymer film or hollow fiber having a thickness of 1 micrometer to 250 micrometers to a pretreatment temperature of 100° C. to 180° C. to form a pretreated polyvinylidene chloride copolymer film and then heating and restraining the pretreated polyvinylidene chloride copolymer film to a maximum pyrolysis temperature from 350° C. to 750° C.
    Type: Application
    Filed: March 14, 2017
    Publication date: March 14, 2019
    Inventors: Junqiang Liu, Douglas E. Beyer, Janet M. Goss, Chan Han, Edward M. Calverley
  • Publication number: 20180280927
    Abstract: A process to prepare a carbon molecular sieve adsorbent composition comprises steps beginning with an activated carbon having specific effective micropore size. The activated carbon is impregnated with monomers or partially polymerized polymer, allowed to complete polymerization, and then carbonized such that the impregnant shrinks the micropores to another specific effective micropore size. Finally, the impregnated/polymerized/carbonized product is annealed at a temperature ranging from 1000° C. to 1500° C., which ultimately and predictably shrinks the micropores to a size ranging from 4.0 Angstroms to 4.3 Angstroms. The invention surprisingly enables fine tuning of the effective micropore size, as well as desirable selectivity, capacity and adsorption rates, to obtain highly desirable carbon molecular sieving capability particularly suited for use in, for example, fixed beds in pressure swing or temperature swing processes to enable propylene/propane separations.
    Type: Application
    Filed: September 30, 2016
    Publication date: October 4, 2018
    Applicant: Dow Global Technologies LLC
    Inventors: Junqiang Liu, Chan Han, Janet M. Goss, Edward M. Calverley
  • Patent number: 10065157
    Abstract: The present invention relates to a mixer, an apparatus comprising the mixer and a reactor, and processes incorporating the same. The mixer comprises an inlet (104) to a chamber (102), wherein the chamber inlet angle is less than 90°. The mixer further comprises an expander zone (106) that expands outwardly at an expander angle of less than 90°. The mixer may be coupled to a reactor at its outlet, which may closely approximate the size of the reactor inlet due to the expander (106).
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: September 4, 2018
    Assignee: Blue Cube IP LLC
    Inventors: Max M. Tirtowidjojo, Hua Bai, Edward M. Calverley
  • Publication number: 20170203276
    Abstract: Novel carbon molecular sieve (CMS) compositions comprising carbonized vinylidene chloride copolymer having micropores with an average micropore size ranging from 3.0 to 5.0. These materials offer capability in separations of gas mixtures including, for example, propane/propylene; nitrogen/methane; and ethane/ethylene. Such may be prepared by a process wherein vinylidene chloride copolymer beads, melt extruded film or fiber are pretreated to form a precursor that is finally carbonized at high temperature. Preselection or knowledge of precursor crystallinity and attained maximum pyrolysis temperature enables preselection or knowledge of a average micropore size, according to the equation ?=6.09+(0.0275×C)?(0.00233×T), wherein ? is the average micropore size in Angstroms, C is the crystallinity percentage and T is the attained maximum pyrolysis temperature in degrees Celsius, provided that crystallinity percentage ranges from 25 to 75 and temperature in degrees Celsius ranges from 800 to 1700.
    Type: Application
    Filed: June 22, 2015
    Publication date: July 20, 2017
    Applicant: Dow Global Technologies LLC
    Inventors: Junqiang Liu, Douglas E. Beyer, Edward M. Calverley, Chan Han
  • Patent number: 9579627
    Abstract: A novel microporous carbon molecular sieve may be used as the basis for carbon adsorbent pellets that have discrete areas of carbonized binder and of carbonized precursor, macropores having an average pore diameter greater than or equal to 1 micrometer and a total macroporosity of at least 30 percent, both as measured by mercury porosimetry, and micropores that are capable of selectively admitting a C2-C3 alkene and excluding a C2-C3 alkane, and a total microporosity ranging from 10 percent to 30 percent. The pellets may be prepared by pyrolyzing a pellet structure comprising a carbon forming, non-melting binder and a non-porous gel type sulfonated polystyrene precursor at a temperature ranging from 500° C. to 1000° C., under an inert atmosphere and other conditions suitable to form the described pellets. The pellets are particularly useful in pressure swing and temperature swing adsorption processes to separate C2-C3 alkane/alkene mixtures.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: February 28, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Junqiang Liu, Mark K. Brayden, Edward M. Calverley, Steven R. Lakso, Yujun Liu, Marcos V. Martinez
  • Patent number: 9403741
    Abstract: Processes for the production of chlorinated alkanes are provided. The present processes comprise dehydrochlorinating one or more trichloroalkanes having from 3-6 carbon atoms and vicinal chlorine atoms, followed by a series of sequential chlorination and/or further dehydrochlorination steps. Because the trichloroalkane is first dehydrochlorinated, rather than being first chlorinated, greater specificity to desired tetra- and pentachloroalkanes can be seen.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: August 2, 2016
    Assignee: BLUE CUBE IP LLC
    Inventors: Max M. Tirtowidjojo, David S. Laitar, Matthew L. Grandbois, William J. Kruper, Jr., Edward M. Calverley
  • Publication number: 20160158715
    Abstract: The present invention relates to a mixer, an apparatus comprising the mixer and a reactor, and processes incorporating the same. The mixer comprises an inlet (104) to a chamber (102), wherein the chamber inlet angle is less than 90°. The mixer further comprises an expander zone (106) that expands outwardly at an expander angle of less than 90°. The mixer may be coupled to a reactor at its outlet, which may closely approximate the size of the reactor inlet due to the expander (106).
    Type: Application
    Filed: October 14, 2013
    Publication date: June 9, 2016
    Inventors: MAX M. TIRTOWIDJOJO, HUA BAI, EDWARD M. CALVERLEY
  • Patent number: 9334205
    Abstract: Processes for the production of chlorinated propanes and propenes are provided. The present processes comprise catalyzing at least one chlorination step with one or more regios elective catalysts that provide a regioselectivity to one chloropropane of at least 5:1 relative to other chloropropanes.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: May 10, 2016
    Assignee: Blue Cube IP LLC
    Inventors: Max Markus Tirtowidjojo, Matthew Lee Grandbois, William J. Kruper, Edward M. Calverley, David Stephen Laitar, Kurt Frederick Hirksekorn
  • Publication number: 20160023967
    Abstract: Processes for the production of chlorinated alkanes are provided. The present processes comprise dehydrochlorinating one or more trichloroalkanes having from 3-6 carbon atoms and vicinal chlorine atoms, followed by a series of sequential chlorination and/or further dehydrochlorination steps. Because the trichloroalkane is first dehydrochlorinated, rather than being first chlorinated, greater specificity to desired tetra- and pentachloroalkanes can be seen.
    Type: Application
    Filed: March 7, 2014
    Publication date: January 28, 2016
    Applicant: BLUE CUBE IP LLC
    Inventors: Max M. TIRTOWIDJOJO, David S. LAITAR, Matthew L. GRANDBOIS, William J. KRUPER, Jr., Edward M. CALVERLEY
  • Publication number: 20160008787
    Abstract: A novel microporous carbon molecular sieve may be used as the basis for carbon adsorbent pellets that have discrete areas of carbonized binder and of carbonized precursor, macropores having an average pore diameter greater than or equal to 1 micrometer and a total macroporosity of at least 30 percent, both as measured by mercury porosimetry, and micropores that are capable of selectively admitting a C2-C3 alkene and excluding a C2-C3 alkane, and a total microporosity ranging from 10 percent to 30 percent. The pellets may be prepared by pyrolyzing a pellet structure comprising a carbon forming, non-melting binder and a non-porous gel type sulfonated polystyrene precursor at a temperature ranging from 500° C. to 1000° C., under an inert atmosphere and other conditions suitable to form the described pellets. The pellets are particularly useful in pressure swing and temperature swing adsorption processes to separate C2-C3 alkane/alkene mixtures.
    Type: Application
    Filed: March 24, 2014
    Publication date: January 14, 2016
    Inventors: Junqiang Liu, Mark K. Brayden, Edward M. Calverley, Steven R. Lakso, Yujun Liu, Marcos V. Martinez
  • Publication number: 20140371494
    Abstract: Processes for the production of chlorinated propanes and propenes are provided. The present processes comprise catalyzing at least one chlorination step with one or more regios elective catalysts that provide a regioselectivity to one chloropropane of at least 5:1 relative to other chloropropanes.
    Type: Application
    Filed: December 12, 2012
    Publication date: December 18, 2014
    Inventors: Max Markus Tirtowidjojo, Matthew Lee Grandbois, William J. Kruper, JR., Edward M. Calverley, David Stephen Laitar, Kurt Frederick Hirksekorn
  • Patent number: 8912115
    Abstract: The present invention is an improved method for preparing a heterogeneous, supported hydrogenation catalyst that comprises a Group VIII A metal and a catalyst support (for example, SiO2, with either a hydrophilic or a hydrophobic surface) via aqueous deposition precipitation as well as the catalyst prepared by said method.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: December 16, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Michael M. Olken, Edward M. Calverley