Patents Assigned to H R D Corporation
  • Publication number: 20100324308
    Abstract: Herein disclosed is a method, comprising: forming a dispersion under high shear comprising gas bubbles of an oxidant dispersed in a liquid phase, wherein the bubbles have a mean diameter of less than 1.5 micron; and contacting the dispersion with an oxidation catalyst to produce a product stream, wherein the product stream comprises a substance selected from the group consisting of dicarboxylic acid, benzoic acid, 2-methylbenzoic acid, 3-methylbenzoic acid, 4-methylbenzoic acid, and phthalic anhydride. In some cases, forming the dispersion under high shear comprises introducing the oxidant and the liquid phase into a high shear device comprising at least one rotor and at least one complementarily-shaped stator. Herein also disclosed is a system for producing a substance selected from the group consisting of dicarboxylic acid, benzoic acid, 2-methylbenzoic acid, 3-methylbenzoic acid, 4-methylbenzoic acid, and phthalic anhydride.
    Type: Application
    Filed: August 12, 2010
    Publication date: December 23, 2010
    Applicant: H R D CORPORATION
    Inventors: Abbas HASSAN, Aziz HASSAN, Rayford G. Anthony, Gregory G. BORSINGER
  • Publication number: 20100313751
    Abstract: Herein disclosed is an apparatus comprising (1) a porous rotor symmetrically positioned about an axis of rotation and surrounding an interior space; (2) an outer casing, wherein the outer casing and the rotor are separated by an annular space; (3) a motor configured for rotating the rotor about the axis of rotation; (4) a feed inlet positioned along the axis of rotation and fluidly connected with the interior space; and (5) a first outlet, wherein the first outlet is fluidly connected with the interior space. Herein disclosed is a system, comprising at least one disclosed apparatus. Herein disclosed is also a method of separating a feed gas into a first fraction and a second fraction, wherein the first fraction has an average molecular weight lower than the average molecular weight of the second fraction.
    Type: Application
    Filed: February 19, 2010
    Publication date: December 16, 2010
    Applicant: H R D CORPORATION
    Inventors: Abbas Hassan, Rayford G. Anthony, Aziz Hassan
  • Patent number: 7842184
    Abstract: A method for removing contaminant from feedwater by forming a dispersion comprising bubbles of a treatment gas in a continuous phase comprising feedwater, wherein the bubbles have a mean diameter of less than about 5 ?m and wherein the treatment gas is selected from air, oxygen, and chlorine. A method for removing contaminants from a feedwater by subjecting a fluid mixture comprising feedwater and a treatment gas to a shear rate greater than 20,000 s?1 in a high shear device to produce a dispersion of treatment gas in a continuous phase of the feedwater. A system for treating feedwater to remove contaminants therefrom is also presented, the system comprising at least one high shear mixing device comprising at least one generator comprising a rotor and a stator separated by a shear gap; and a pump configured for delivering feedwater and treatment gas to the high shear mixing device.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: November 30, 2010
    Assignee: H R D Corporation
    Inventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
  • Publication number: 20100294699
    Abstract: Herein disclosed is a method for hydrodesulfurization, hydrodenitrogenation, hydrofinishing, amine production or a combination thereof. The method comprises forming a dispersion comprising hydrogen-containing gas bubbles dispersed in a liquid feedstock, wherein the bubbles have a mean diameter of less than about 5 ?m and wherein the feedstock comprises a mixture of petroleum-derived hydrocarbons and a naturally derived renewable oil. The feedstock comprises hydrocarbons selected from the group consisting of liquid natural gas, crude oil, crude oil fractions, gasoline, diesel, naphtha, kerosene, jet fuel, fuel oils, and combinations thereof. The method further comprises contacting the dispersion with a catalyst that is active for hydrodesulfurization, hydrodenitrogenation, hydrofinishing, amine production, or a combination thereof. The catalyst comprises homogeneous catalysts and heterogeneous catalysts. The catalyst may be utilized in fixed-bed or slurry applications.
    Type: Application
    Filed: January 18, 2010
    Publication date: November 25, 2010
    Applicant: H R D CORPORATION
    Inventors: Abbas HASSAN, Rayford G. ANTHONY, Gregory G. BORSINGER, Aziz HASSAN
  • Publication number: 20100266465
    Abstract: Methods and systems for the production of linear alkylbenzenes are described herein. The methods and systems incorporate the novel use of a high shear device to promote dispersion and mixing of one or more olefins (e.g. propylene) with an aromatic. The high shear device may allow for lower reaction temperatures and pressures and may also reduce reaction time with existing catalysts.
    Type: Application
    Filed: June 8, 2010
    Publication date: October 21, 2010
    Applicant: H R D CORPORATION
    Inventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
  • Publication number: 20100234550
    Abstract: In this disclosure, a system is described, comprising a shear device with at least one inlet and at least one outlet and a mixing vessel with at least one inlet and at least one outlet, wherein an inlet of the shear device is in fluid communication with an outlet of the mixing vessel. In certain embodiments, the shear device and the mixing vessel form a loop for fluid communication. Also disclosed herein is a method of high shear oxidation, comprising mixing an oxidant with a substrate to form a substrate-oxidant mixture and applying shear to the substrate-oxidant mixture to form a product. The product includes ethylene oxide, propylene oxide, terephthalic acid, phenol, acrylonitrile, maleic anhydride, phthalic anhydride, nitric acid, caprolactam, oxidized polyethylene, oxidized polypropylene, oxidized polyethylene copolymers, and oxidized polypropylene copolymers. Suitable oxidant includes air, oxygen, ozone, peroxide, organic peroxide, halogen, oxygen-containing gas, and halogen-containing gas.
    Type: Application
    Filed: December 14, 2009
    Publication date: September 16, 2010
    Applicant: H R D CORPORATION
    Inventors: Abbas Hassan, Harshad M. Bhatt, Aziz Hassan, Gregory G. Borsinger
  • Publication number: 20100222615
    Abstract: Herein disclosed is a method of hydrating an alkylene oxide. In an embodiment, the method comprises (a) introducing an alkylene oxide into water to form a first stream; (b) flowing the first stream through a high shear device to produce a second stream; and (c) contacting the second stream with a catalyst in a reactor to hydrate the alkylene oxide and form an alkylene glycol. In some embodiments, alkylene oxide comprises ethylene oxide, propylene oxide, butylene oxide, or combinations thereof. In some embodiments, producing the second stream comprises an energy expenditure of at least about 1000 W/m3. In some embodiments, the catalyst comprises an amine, an acid catalyst, an organometallic compound, an alkali metal halide, a quaternary ammonium halide, zeolites, or combinations thereof. In some embodiments, the alkylene glycol comprises ethylene glycol.
    Type: Application
    Filed: March 12, 2010
    Publication date: September 2, 2010
    Applicant: H R D CORPORATION
    Inventors: Abbas Hassan, Aziz Hassan, Rayford G. Anthony, Krishnan Viswanathan, Gregory G. Borsinger
  • Publication number: 20100217039
    Abstract: Herein disclosed is an apparatus, which comprises (1) a first cylindrical, porous, catalytic rotor symmetrically positioned about an axis of rotation and surrounding a first interior space; wherein the first porous catalytic rotor comprises a first catalyst; (2) an outer casing, wherein the outer casing and the rotor are separated by an annular space; (3) a motor configured for rotating the rotor about the axis of rotation; (4) a feed inlet line; and (5) a first outlet line, wherein the first outlet line is fluidly connected with the annular space. Herein disclosed is also a method comprising: (1) passing a feed gas comprising at least one gaseous reactant through a porous, catalytic rotor, wherein the porous, catalytic rotor is permeable to the at least one gaseous reactant and is made from or contains a catalyst effective for catalyzing a first reaction; and (2) extracting a first desired product.
    Type: Application
    Filed: February 16, 2010
    Publication date: August 26, 2010
    Applicant: H R D CORPORATION
    Inventors: Abbas HASSAN, Rayford G. ANTHONY, Aziz HASSAN
  • Publication number: 20100200487
    Abstract: A system for treating feedwater to remove contaminants therefrom, the system comprising at least one high shear mixing device comprising at least one generator comprising a rotor and a stator separated by a shear gap, wherein the shear gap is the minimum distance between the rotor and the stator, and wherein the high shear mixing device is capable of producing a tip speed of the rotor of greater than 22.9 m/s (4,500 ft/min) and a pump configured for delivering feedwater and treatment gas selected from oxygen, air, and chlorine to the high shear mixing device.
    Type: Application
    Filed: April 23, 2010
    Publication date: August 12, 2010
    Applicant: H R D CORPORATION
    Inventors: Abbas HASSAN, Ebrahim BAGHERZADEH, Rayford G. ANTHONY, Gregory BORSINGER, Aziz HASSAN
  • Publication number: 20100199545
    Abstract: Embodiments disclosed herein describe a system for producing enhanced wax alternatives. The system comprises a reactor with at least one inlet and one outlet and at least one high shear mixing device with at least one inlet and one outlet. The at least one outlet of said high shear mixing device is in fluid communication with at least one inlet of said reactor. The high shear mixing device may comprise counter rotating rotors. The high shear mixing device may also comprise at least one catalytic surface. Embodiments disclosed herein also describe a method of producing enhanced wax alternatives. The method comprises (1) providing petroleum wax and base oil; (2) mixing said petroleum wax and base oil with a hydrogen-containing gas in a high shear device to form a feedstock; and (3) hydrogenating said feedstock for a time sufficient to produce enhanced hydrogenated products.
    Type: Application
    Filed: January 22, 2010
    Publication date: August 12, 2010
    Applicant: H R D CORPORATION
    Inventors: Abbas Hassan, Gregory G. Borsinger, Rayford G. Anthony, Aziz Hassan
  • Publication number: 20100183486
    Abstract: Use of a high shear mechanical device incorporated into a process for the production of chlorobenzene is capable of decreasing mass transfer limitations, thereby enhancing the chlorobenzene production process.
    Type: Application
    Filed: March 31, 2010
    Publication date: July 22, 2010
    Applicant: H R D CORPORATION
    Inventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
  • Patent number: 7749481
    Abstract: A method for removing hydrogen sulfide from a sour gas stream comprising hydrogen sulfide by oxidizing hydrogen sulfide in a converter by contacting the sour gas stream with an aqueous catalytic solution, thereby producing a desulfurized gas stream and a liquid stream comprising reduced catalyst and elemental sulfur, introducing an oxidant and the liquid stream comprising reduced catalyst and elemental sulfur into a high shear device and producing a dispersion wherein the mean bubble diameter of the oxidant gas in the dispersion is less than about 5 ?m, introducing the dispersion into a vessel from which a sulfur-containing slurry is removed and a regenerated catalyst stream is removed, wherein the sulfur slurry comprises elemental sulfur and aqueous liquid, and recycling at least a portion of the regenerated catalyst stream to the converter. A system of apparatus for carrying out the method is also provided.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: July 6, 2010
    Assignee: H R D Corporation
    Inventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
  • Patent number: 7750188
    Abstract: A method for producing aniline or toluenediamine is disclosed which comprises forming a dispersion comprising hydrogen gas bubbles dispersed in a liquid medium comprising either nitrobenzene or dinitrotoluene, wherein the hydrogen gas bubbles have a mean diameter less than 1 micron; and subjecting the dispersion to hydrogenation reaction promoting conditions comprising pressure less than about 600 kPa and temperature less than about 200° C., whereby at least a portion of the nitrobenzene or dinitrotoluene is hydrogenated to form aniline or toluenediamine, respectively. A system for carrying out the method is also disclosed.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: July 6, 2010
    Assignee: H R D Corporation
    Inventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
  • Publication number: 20100168477
    Abstract: Disclosed herein is a method for cyclohexane oxidation. The method comprises a) forming a dispersion comprising liquid cyclohexane and an oxidant gas utilizing a high shear device, wherein the dispersion comprises oxidant gas bubbles with a mean diameter of less than about 5 ?m, and wherein the high shear device comprises at least one rotor and at least one stator; and b) hydrogenating the dispersion in the presence of a hydrogenation catalyst to form a product comprising cyclohexanol or cyclohexanone. In some embodiments, the oxidant comprises air, oxygen-enriched air, oxygen, or an oxygen-containing gas. In some embodiments, step a) of the method comprises forming the dispersion in the presence of an oxidation catalyst. Also disclosed herein is a system for oxidizing cyclohexane.
    Type: Application
    Filed: December 1, 2009
    Publication date: July 1, 2010
    Applicant: H R D CORPORATION
    Inventors: Abbas Hassan, Aziz Hassan, Gregory G. Borsinger, Krishnan Viswanathan, Rayford G. Anthony
  • Publication number: 20100147764
    Abstract: A method for removing contaminant from feedwater by forming a dispersion comprising bubbles of a treatment gas in a continuous phase comprising feedwater, wherein the bubbles have a mean diameter of less than about 5 ?m and wherein the treatment gas is selected from the group consisting of air, oxygen, and chlorine. A method for removing contaminants from a feedwater by subjecting a fluid mixture comprising feedwater and a treatment gas to a shear rate greater than 20,000 s?1 in a high shear device to produce a dispersion of treatment gas in a continuous phase of the feedwater. A system for treating feedwater to remove contaminants therefrom is also presented, the system comprising at least one high shear mixing device comprising at least one generator comprising a rotor and a stator separated by a shear gap; and a pump configured for delivering feedwater and treatment gas to the high shear mixing device.
    Type: Application
    Filed: February 22, 2010
    Publication date: June 17, 2010
    Applicant: H R D CORPORATION
    Inventors: Abbas HASSAN, Ebrahim BAGHERZADEH, Rayford G. ANTHONY, Gregory BORSINGER, Aziz HASSAN
  • Publication number: 20100125157
    Abstract: A method and system for producing dispersed waxes, including a high shear mechanical device. In one embodiment, the method comprises forming a dispersion of wax globules in a carrier liquid in a high shear device prior to implementation in a waxy product. In another instance the system for producing waxy products comprises a high shear device for dispersing wax in a carrier liquid.
    Type: Application
    Filed: November 6, 2009
    Publication date: May 20, 2010
    Applicant: H R D CORPORATION
    Inventors: Abbas Hassan, Aziz Hassan
  • Publication number: 20100114061
    Abstract: Herein disclosed is a system for applying shear stress ex-situ to a fluid. In some embodiments, the system comprises a shear device; and at least one device configured for intravenous administration of the fluid to a patient, the devices defining a fluid passage configured to be sterilized and maintained sterile during use, the fluid comprising at least one therapeutic fluid, blood, or a combination thereof. The shear device of the system is in fluid communication with the at least one device configured for intravenous administration of the fluid to a patient. Herein also disclosed is a method of preparing a fluid for intravenous administration to a patient.
    Type: Application
    Filed: October 1, 2009
    Publication date: May 6, 2010
    Applicant: H R D CORPORATION
    Inventors: Abbas HASSAN, Rayford G. ANTHONY, Gregory G. BORSINGER, Aziz HASSAN
  • Publication number: 20100111786
    Abstract: Use of a high shear mechanical device in a process for production of starch by hydration and disruption of corn kernel particles in the presence of sulfur dioxide or bisulfite ions makes possible a decrease in mass transfer limitations, thereby enhancing starch production. A system for production of starch is also provided in which a high shear mixing device is configured to receive an aqueous corn slurry from a pump that is disposed between the reactor and a gaseous sulfur dioxide inlet of the high shear mixing device. The high shear mixing device is also configured to generate a fine dispersion of sulfur dioxide bubbles and small corn particles in the slurry. A reactor is configured to receive the output from the high shear mixing device and to provide for starch production.
    Type: Application
    Filed: July 31, 2009
    Publication date: May 6, 2010
    Applicant: H R D CORPORATION
    Inventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
  • Publication number: 20100092354
    Abstract: Use of a high shear mechanical device incorporated into a process for the production of chloral as a reactor device is capable of decreasing mass transfer limitations, thereby enhancing the chloral production process. A system for the production of chloral from acetaldehyde and chlorine, the system comprising a reactor and an external high shear device the outlet of which is fluidly connected to the inlet of the reactor; the high shear device capable of providing a dispersion of chlorine gas bubbles within a liquid, the bubbles having an average bubble diameter of less than about 100 ?m.
    Type: Application
    Filed: December 10, 2009
    Publication date: April 15, 2010
    Applicant: H R D CORPORATION
    Inventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
  • Patent number: 7696391
    Abstract: A method for producing nitrobenzene is disclosed which comprises forming a dispersion comprising benzene-containing droplets or particles dispersed in a mixture of concentrated nitric acid and concentrated sulfuric acid, wherein said particles have a mean diameter less than one micron, and subjecting the dispersion to reaction conditions comprising a pressure in the range of about 203 kPa (2 atm) to about 6080 kPa (60 atm) and a temperature in the range of about 20° C. to about 230° C., whereby at least a portion of said benzene is nitrated to form nitrobenzene. A system for carrying out the method is also disclosed.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: April 13, 2010
    Assignee: H R D Corporation
    Inventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan