Patents by Inventor Jung Hoon Chang
Jung Hoon Chang 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).
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Patent number: 8246790Abstract: The present invention provides a (meth)acrylic acid collecting method for collecting a (meth)acrylic acid from a mixed gas that includes an organic byproduct, a steam, and a (meth)acrylic acid that are generated in a production reaction of the (meth)acrylic acid, which includes the steps of a) contacting the mixed gas that includes the organic byproduct, the steam, and the (meth)acrylic acid with a (meth)acrylic acid absorption solvent to obtain a gas that includes the organic byproduct and the steam and the (meth)acrylic acid containing solution while the gas and the (meth)acrylic acid containing solution are separated from each other; b) contacting the gas that includes the organic byproduct and the steam that are obtained in the step a with the organic byproduct absorption solvent to obtain the gas that includes the steam and the organic byproduct containing solution while the gas and the organic byproduct containing solution are separated from each other; c) supplying the gas that includes the steam thatType: GrantFiled: October 23, 2008Date of Patent: August 21, 2012Assignee: LG Chem, Ltd.Inventors: Se-Won Baek, Kyoung-Su Ha, Sung-Kyoo Park, Jun-Seok Ko, Dong-Hyun Woo, Young-Bae Kim, Jung-Hoon Chang
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Patent number: 8043583Abstract: Disclosed is a shell-and-tube reactor or heat exchanger, which alternately comprises a doughnut-type baffle plate and a first disc-type baffle plate in order to increase heat transfer efficiency. In the reactor or heat exchanger, a second disc-type baffle plate is placed in an empty space inside of the doughnut-type baffle plate, and some tubes, through the inside of which a first object for heat transfer with a heat transfer medium, are present in a region inside of the doughnut-type baffle plate and outside of the second disc-type baffle plate. Also disclosed is a method for producing an oxide, comprising: using said reactor or heat exchanger, and causing a catalytic vapor-phase oxidation reaction in the tubes, through the inside of which the first object for heat transfer with the heat transfer medium is passed.Type: GrantFiled: January 31, 2007Date of Patent: October 25, 2011Assignee: LG Chem, Ltd.Inventors: Sang Baek Shin, Sang Phil Han, Ye Hoon Im, Young Bae Kim, Jung Hoon Chang, Sang Oeb Na, Won Am Lee
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Publication number: 20100224478Abstract: The present invention provides a (meth)acrylic acid collecting method for collecting a (meth)acrylic acid from a mixed gas that includes an organic byproduct, a steam, and a (meth)acrylic acid that are generated in a production reaction of the (meth)acrylic acid, which includes the steps of a) contacting the mixed gas that includes the organic byproduct, the steam, and the (meth)acrylic acid with a (meth)acrylic acid absorption solvent to obtain a gas that includes the organic byproduct and the steam and the (meth)acrylic acid containing solution while the gas and the (meth)acrylic acid containing solution are separated from each other; b) contacting the gas that includes the organic byproduct and the steam that are obtained in the step a with the organic byproduct absorption solvent to obtain the gas that includes the steam and the organic byproduct containing solution while the gas and the organic byproduct containing solution are separated from each other; c) supplying the gas that includes the steam thatType: ApplicationFiled: October 23, 2008Publication date: September 9, 2010Inventors: Se-Won Baek, Kyoung-Su Ha, Sung-Kyoo Park, Jun-Seok Ko, Dong-Hyun Woo, Young-Bae Kim, Jung-Hoon Chang
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Patent number: 7744831Abstract: Disclosed is an annular distributor having: an annular slit layer that is mounted on an inner circumferential surface of the annular distributor and has at least one slit discharging or introducing a fluid; at least one opening that is formed on an outer circumferential surface of the annular distributor and is connected with any one of a fluid supply duct and a fluid discharge duct; and at least one guide vane selected from three types of guide vanes that are installed in the annular distributor, and splits a flow rate of the fluid supplied from the duct or collects a flow rate of the fluid discharged to the duct. And disclosed are a reactor or heat exchanger has the annular distributor, and a method of producing unsaturated aldehyde or unsaturated acid from olefin by catalytic gas phase oxidation in the reactor.Type: GrantFiled: February 26, 2007Date of Patent: June 29, 2010Assignee: LG Chem, Ltd.Inventors: Sang Baek Shin, Sang Phil Han, Ye Hoon Im, Young Bae Kim, Jung Hoon Chang
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Patent number: 7695695Abstract: A shell-and-tube reactor or heat exchanger comprises first tubes, through the inside of which a first object for heat transfer with a heat transfer medium is passed, some of the first tubes being provided in a zone in which a flow of the heat transfer medium (parallel flow) parallel to the axis of the tubes is present; and a second tube, through the inside of which the first object is not passed, the second tube being provided in said zone such that it is parallel to the axis of the first tubes. A method for producing an oxide comprises using said shell-and-tube reactor or heat exchanger, and causing a catalytic vapor-phase oxidation reaction in first tubes, through the inside of which the first object for heat transfer with the heat transfer medium is passed.Type: GrantFiled: January 18, 2007Date of Patent: April 13, 2010Assignee: LG Chem, Ltd.Inventors: Sang Baek Shin, Sang Phil Han, Ye Hoon Im, Young Bae Kim, Jung Hoon Chang, Sang Oeb Na, Won Am Lee
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Publication number: 20070202022Abstract: Disclosed is an annular distributor having: an annular slit layer that is mounted on an inner circumferential surface of the annular distributor and has at least one slit discharging or introducing a fluid; at least one opening that is formed on an outer circumferential surface of the annular distributor and is connected with any one of a fluid supply duct and a fluid discharge duct; and at least one guide vane selected from three types of guide vanes that are installed in the annular distributor, and splits a flow rate of the fluid supplied from the duct or collects a flow rate of the fluid discharged to the duct. And disclosed are a reactor or heat exchanger has the annular distributor, and a method of producing unsaturated aldehyde or unsaturated acid from olefin by catalytic gas phase oxidation in the reactor.Type: ApplicationFiled: February 26, 2007Publication date: August 30, 2007Inventors: Sang Baek Shin, Sang Phil Han, Ye Hoon Im, Young Bae Kim, Jung Hoon Chang
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Publication number: 20070187079Abstract: Disclosed is a shell-and-tube reactor or heat exchanger, which alternately comprises a doughnut-type baffle plate and a first disc-type baffle plate in order to increase heat transfer efficiency. In the reactor or heat exchanger, a second disc-type baffle plate is placed in an empty space inside of the doughnut-type baffle plate, and some tubes, through the inside of which a first object for heat transfer with a heat transfer medium, are present in a region inside of the doughnut-type baffle plate and outside of the second disc-type baffle plate. Also disclosed is a method for producing an oxide, comprising: using said reactor or heat exchanger, and causing a catalytic vapor-phase oxidation reaction in the tubes, through the inside of which the first object for heat transfer with the heat transfer medium is passed.Type: ApplicationFiled: January 31, 2007Publication date: August 16, 2007Inventors: Sang Baek Shin, Sang Phil Han, Ye-Hoon Im, Young Bae Kim, Jung Hoon Chang, Sang Oeb Na, Won Am Lee
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Publication number: 20070167647Abstract: Disclosed is a shell-and-tube reactor or heat exchanger comprising: first tubes, through the inside of which a first object for heat transfer with a heat transfer medium is passed, some of the first tubes being provided in a zone in which a flow of the heat transfer medium (parallel flow) parallel to the axis of the tubes is present; and a second tube, through the inside of which the first object is not passed, the second tube being provided in said zone such that it is parallel to the axis of the first tubes. Also disclosed is a method for producing an oxide, comprising using said shell-and-tube reactor or heat exchanger, and causing a catalytic vapor-phase oxidation reaction in first tubes, through the inside of which the first object for heat transfer with the heat transfer medium is passed.Type: ApplicationFiled: January 18, 2007Publication date: July 19, 2007Inventors: Sang Baek Shin, Sang Phil Han, Ye Hoon Im, Young Bae Kim, Jung Hoon Chang, Sang Oeb Na, Won Am Lee
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Patent number: 6866784Abstract: A slurry recycling system for use in a chemical mechanical polishing (CMP) apparatus for polishing a workpiece by using a slurry containing an abrasive, a pH agent and a deionized water is provided. The slurry recycling system includes a slurry collection tank for storing the slurry used in the CMP apparatus as a recyclable slurry; an ultra filter for separating, from the recyclable slurry, a fluid ingredient containing the pH agent and the deionized water and the abrasive to allow the abrasive to be reintroduced into the slurry collection tank; and a reverse osmosis filter for separating, from the fluid ingredient, the pH agent and the deionized water to allow the pH agent to be reintroduced into the slurry collection tank and to allow the deionized water to be discharged out.Type: GrantFiled: June 27, 2001Date of Patent: March 15, 2005Assignee: Nymtech, Co., Ltd.Inventors: Jung Hoon Chang, Kwang Jun Lee, Jin Goo Park
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Publication number: 20030189004Abstract: A slurry recycling system for use in a chemical mechanical polishing (CMP) apparatus for polishing a workpiece by using a slurry containing an abrasive, a pH agent and a deionized water is provided. The slurry recycling system includes a slurry collection tank for storing the slurry used in the CMP apparatus as a recyclable slurry; an ultra filter for separating, from the recyclable slurry, a fluid ingredient containing the pH agent and the deionized water and the abrasive to allow the abrasive to be reintroduced into the slurry collection tank; and a reverse osmosis filter for separating, from the fluid ingredient, the pH agent and the deionized water to allow the pH agent to be reintroduced into the slurry collection tank and to allow the deionized water to be discharged out.Type: ApplicationFiled: December 16, 2002Publication date: October 9, 2003Inventors: Jung Hoon Chang, Kwang Jun Lee, Jin Goo Park