Patents Assigned to Celanese International Corporation
  • Production of acetic acid with high conversion rate
    Patent number: 9567282
    Abstract: A process for producing acetic acid comprising the steps of reacting carbon monoxide and at least one of methanol and a methanol derivative in a first reactor under conditions effective to produce a crude acetic acid product; separating the crude acetic acid product into at least one derivative stream, at least one of the at least one derivative stream comprising residual carbon monoxide; and reacting at least a portion of the residual carbon monoxide with at least one of methanol and a methanol derivative over a metal catalyst in a second reactor to produce additional acetic acid.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: February 14, 2017
    Assignee: CELANESE INTERNATIONAL CORPORATION
    Inventors: G. Paull Torrence, Brian W. Hokkanen, Michael O. Nutt, Tianshu Pan, Ronald D. Shaver
  • Processes for producing acetic acid
    Patent number: 9561994
    Abstract: The disclosure is directed to a carbonylation process for producing acetic acid which includes separating a vapor product stream from a carbonylation reactor to produce a crude acid product comprising acetic acid comprising lithium cations and contacting the crude acetic acid product with a cationic exchanger in the acid form within a first treatment device to produce an intermediate acid product; and contacting the intermediate acetic acid product with a metal-exchanged ion exchange resin having acid cation exchange sites within a second treatment device to produce a purified acetic acid. Embodiments directed to operation of a treatment device comprising a plurality of sampling ports are also disclosed.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: February 7, 2017
    Assignee: CELANESE INTERNATIONAL CORPORATION
    Inventors: Ronald David Shaver, Yaw-Haw Liu, Mark O Scates, Sarah Lane Abrego
  • Pump around reactor for production of acetic acid
    Patent number: 9550714
    Abstract: The present invention relates to improved processes for the manufacture of acetic acid. A pump around reactor is used to produce additional heat for the production of steam. The pump around reactor receives a portion of the reaction solution produced by the carbonylation reactor and further reacts that portion with additional carbon monoxide and/or reactants.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: January 24, 2017
    Assignee: CELANESE INTERNATIONAL CORPORATION
    Inventor: Raymond J. Zinobile
  • Processes for producing acetic acid
    Patent number: 9540302
    Abstract: Processes for the producing acetic acid and, in particular, to improved processes for removing a cation, such as lithium, and iodides from a low energy carbonylation process to produce purified acetic acid. In one embodiment, the cation, e.g., lithium, may be removed using a cationic exchanger prior to removing iodides using a metal-exchanged ion exchange resin. The present invention is suited for removing at least one cation selected from the group consisting of Groups IA and IIA of the periodic table, quaternary nitrogen cations, and phosphorous-containing cations.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: January 10, 2017
    Assignee: CELANESE INTERNATIONAL CORPORATION
    Inventors: Mark O. Scates, Sarah Lane Abrego, Yaw-Hwa Liu, Ronald D. Shaver
  • Processes for producing an acetic acid product having low butyl acetate content
    Patent number: 9540304
    Abstract: A process for producing an acetic acid product having low butyl acetate content via a carbonylation reaction. The carbonylation reaction is carried out at a temperature from 100 to 300° C., a hydrogen partial pressure from 0.3 to 2 atm, and a rhodium catalyst concentration from 100 to 3000 wppm, based on the weight of the reaction medium. The butyl acetate concentration in the acetic acid product may be controlled by removing acetaldehyde from a stream derived from the reaction medium and/or by adjusting at least one of reaction temperature, hydrogen partial pressure, and metal catalyst concentration.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: January 10, 2017
    Assignee: CELANESE INTERNATIONAL CORPORATION
    Inventors: Yaw-Hwa Liu, Mark O. Scates
  • Ruthenium-bismuth mixed oxide hydrogenation catalysts and processes for producing ethanol
    Patent number: 9540297
    Abstract: A process is disclosed for producing ethanol, comprising contacting acetic acid and hydrogen in a reactor in the presence of a catalyst comprising a binder, a mixed oxide, and at least two promoter metals comprising ruthenium and bismuth. The mixed oxide preferably also comprises cobalt and tin.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: January 10, 2017
    Assignee: CELANESE INTERNATIONAL CORPORATION
    Inventors: Heiko Weiner, Zhenhua Zhou, Victor J. Johnston
  • Process to control HI concentration in residuum stream
    Patent number: 9512056
    Abstract: A process directed to acetic acid production comprising providing a feed stream comprising methyl iodide, water, acetic acid, methyl acetate, and at least one PRC to a distillation column comprising a distillation zone and a bottom sump zone and distilling the feed stream at a pressure and a temperature sufficient to produce an overhead stream comprising methyl iodide and at least one PRC, and a residuum stream flowing from the bottom sump zone comprising water and greater than or equal to about 0.11 weight percent HI is disclosed herein.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: December 6, 2016
    Assignee: CELANESE INTERNATIONAL CORPORATION
    Inventors: Mark O Scates, Ronald David Shaver, Yaw-Haw Liu
  • Process for producing acetic acid
    Patent number: 9505691
    Abstract: Process for producing acetic acid is disclosed in which the reaction medium is separated into a liquid recycle and a vapor product stream including acetic acid, methyl iodide, methyl acetate and water in a flash vessel. The vapor product stream is condensed into a liquid stream that is enriched in acetic acid and this liquid stream is further sent to the distillation columns to recover acetic acid. The process advantageously improves the capacity of the acetic acid production while reducing the amount of acetic acid that is recycled.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: November 29, 2016
    Assignee: Celanese International Corporation
    Inventor: Ronald David Shaver
  • Process to control HI concentration in residuum stream
    Patent number: 9505696
    Abstract: A process directed to acetic acid production comprising providing a feed stream having a first density comprising water, acetic acid, methyl acetate, at least one PRC, and greater than about 30 wt % methyl iodide to a distillation column comprising a distillation zone and a bottom sump zone; and distilling the feed stream at a pressure and a temperature sufficient to produce an overhead stream having a second density and comprising greater than about 40 wt % methyl iodide and at least one PRC; wherein a percent decrease between the first density and the second density is from 20% to 35%.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: November 29, 2016
    Assignee: Celanese International Corporation
    Inventors: Mark O Scates, Ronald David Shaver, Yaw-Haw Liu
  • Process to control HI concentration in residuum stream
    Patent number: 9505695
    Abstract: A process directed to acetic acid production comprising providing a feed stream comprising methyl iodide, water, acetic acid, methyl acetate, and at least one PRC to a distillation column comprising a distillation zone and a bottom sump zone and distilling the feed stream at a pressure and a temperature sufficient to produce an overhead stream comprising methyl iodide and at least one PRC, and a residuum stream flowing from the bottom sump zone comprising water and greater than or equal to about 0.11 weight percent HI is disclosed herein.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: November 29, 2016
    Assignee: CELANESE INTERNATIONAL CORPORATION
    Inventors: Mark O Scates, Ronald David Shaver, Yaw-Haw Liu
  • Process for producing acrylic acids and acrylates
    Patent number: 9487466
    Abstract: In one embodiment, the invention is to process for producing acrylics. The process includes the steps of contacting a crude product stream with an extraction agent mixture at a temperature less than 50° C.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: November 8, 2016
    Assignee: CELANESE INTERNATIONAL CORPORATION
    Inventors: Craig J. Peterson, R. Jay Warner, Josefina T. Chapman
  • Processes for producing acetic acid
    Patent number: 9487464
    Abstract: The disclosure is directed to a carbonylation process for producing acetic acid which includes separating a vapor product stream from a carbonylation reactor to produce a crude acid product comprising acetic acid comprising lithium cations and contacting the crude acetic acid product with a cationic exchanger in the acid form within a first treatment device to produce an intermediate acid product; and contacting the intermediate acetic acid product with a metal-exchanged ion exchange resin having acid cation exchange sites within a second treatment device to produce a purified acetic acid. Embodiments directed to a treatment device comprising a plurality of sampling ports having a first open flow path and a second flow path comprising a porous element are disclosed.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: November 8, 2016
    Assignee: CELANESE INTERNATIONAL CORPORATION
    Inventors: Ronald David Shaver, Yaw-Haw Liu, Mark O Scates, Sarah Lane Abrego
  • Ethanol manufacturing process over catalyst having improved radial crush strength
    Patent number: 9486781
    Abstract: Acetic acid is hydrogenation in the presence of a catalyst comprising one or more active metals on a silica support, wherein the catalyst has a radial crush strength of at least 4 N/mm. The one or more active metals may include cobalt, copper, gold, iron, nickel, palladium, platinum, iridium, osmium, rhenium, rhodium, ruthenium, tin, zinc, lanthanum, cerium, manganese, chromium, vanadium, molybdenum and mixtures thereof. Radial crush strength may be improved by steam treating the catalyst support prior to the loading of the one or more active metals.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: November 8, 2016
    Assignee: CELANESE INTERNATIONAL CORPORATION
    Inventors: Zhenhua Zhou, Emily Duff, Dheeraj Kumar, Heiko Weiner
  • Reducing hydrogen iodide content in carbonylation processes
    Patent number: 9458077
    Abstract: Processes for producing acetic acid wherein at least one process vent stream is treated in an absorber column that utilizes a scrubber solvent, e.g., acetic acid, methanol, and/or methyl acetate to remove hydrogen iodide therefrom.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: October 4, 2016
    Assignee: CELANESE INTERNATIONAL CORPORATION
    Inventors: Ronald D. Shaver, Yaw-Hwa Liu, Mark O. Scates
  • Hydrogenation catalysts comprising a mixed oxide and processes for producing ethanol
    Patent number: 9458072
    Abstract: A process is disclosed for producing ethanol, comprising contacting acetic acid and hydrogen in a reactor in the presence of a catalyst comprising a binder and a mixed oxide comprising cobalt and preferably tin, wherein the mixed oxide is present in an amount from 60 to 90 wt. %, based on the total weight of the catalyst.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: October 4, 2016
    Assignee: CELANESE INTERNATIONAL CORPORATION
    Inventors: Heiko Weiner, Zhenhua Zhou, Victor J. Johnston
  • Processes for producing acetic acid from a reaction medium having low ethyl iodide content
    Patent number: 9458078
    Abstract: A process for producing high purity acetic acid from a carbonylation reaction, wherein the carbonylation reaction is carried out while maintaining a low ethyl iodide content in the reaction medium. The ethyl iodide concentration may be maintained by removing acetaldehyde from the reaction medium and/or by adjusting at least one A) hydrogen partial pressure in the reactor, B) methyl acetate concentration of the reaction medium; and/or C) methyl iodide concentration of the reaction medium.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: October 4, 2016
    Assignee: CELANESE INTERNATIONAL CORPORATION
    Inventors: Yaw-Hwa Liu, Mark O. Scates
  • Processes for producing anhydrous ethanol compositions
    Patent number: 9447005
    Abstract: The present invention is to a process for producing a anhydrous ethanol composition comprising hydrogenating acetic acid in the presence of a catalyst to form a crude ethanol product; separating in a first column at least a portion of the crude ethanol product into a first distillate comprising ethanol, water and ethyl acetate, and a first residue comprising acetic acid; separating in a second column at least a portion of the first distillate into a second distillate comprising ethyl acetate and a second residue comprising ethanol and water; separating in a third column at least a portion of the second residue into a third distillate comprising ethanol and residual water and a third residue comprising separated water; and dehydrating at least a portion of the third distillate to form the anhydrous ethanol composition. The anhydrous ethanol composition, as formed, comprises less than 1 wt. % water.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: September 20, 2016
    Assignee: CELANESE INTERNATIONAL CORPORATION
    Inventors: Trinity Horton Hale, Radmila Wollrab, Victor J. Johnston, Lincoln Sarager, R. Jay Warner, Gerald Grusendorf
  • Methanol carbonylation system with multiple absorber feed options
    Patent number: 9446363
    Abstract: A methanol carbonylation system 10 includes an absorber tower 75 adapted for receiving a vent gas stream and removing methyl iodide therefrom with a scrubber solvent, the absorber tower being coupled to first and second scrubber solvent sources 16, 56 which are capable of supplying different first and second scrubber solvents. A switching system including valves 90, 92, 94, 96, 98 alternatively provides first or second scrubber solvents to the absorber tower and returns the used solvent and sorbed material to the carbonylation system to accommodate different operating modes.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: September 20, 2016
    Assignee: Celanese International Corporation
    Inventors: Raymond J. Zinoble, Tommy W. Doggett, Lun-kuang Liu
  • Adhesive composition and use thereof
    Patent number: 9428673
    Abstract: The invention discloses an adhesive composition suitable for bonding wood, in particular hardwood. The adhesive composition comprises a vinyl acetate-ethylene copolymer-based emulsion, a vinyl alcohol polymer, and a polyisocyanate. The process for preparing the adhesive composition and use of the same are also disclosed.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: August 30, 2016
    Assignee: CELANESE INTERNATIONAL CORPORATION
    Inventors: Yi Han, Xiaodong Zhao, Bangfang He, Yifang Shi
  • Process to produce acetic acid with recycle of water
    Patent number: 9416088
    Abstract: A process for producing acetic acid is disclosed in which the recycle ratio of the mass flow of the light liquid phase recycled to the reactor to the mass flow of the aqueous recycle stream recycled to the reactor is less than or equal to 2.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: August 16, 2016
    Assignee: CELANESE INTERNATIONAL CORPORATION
    Inventors: Ronald D. Shaver, Yaw-Hwa Liu, Mark O. Scates