Patents by Inventor Chang-houn Rhee

Chang-houn Rhee 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: 20240139669
    Abstract: A method for preparing hydrogen from ammonia by using pressure swing adsorption (PSA) is provided. The method for preparing hydrogen from ammonia, of the present invention, comprises the steps of: generating hydrogen and nitrogen from ammonia gas through a high-temperature reaction by using a catalyst; performing purification by selectively adsorbing unreacted ammonia gas from a gas containing unreacted ammonia and low-purity hydrogen and nitrogen, which are supplied through the high-temperature reaction and cooled; and performing purification by separating high-purity hydrogen from the gas consisting of low-purity hydrogen and nitrogen, wherein purification is carried out by using a carbon molecular sieve (CMS) adsorbent so as to desorb the unreacted ammonia gas through PSA.
    Type: Application
    Filed: November 10, 2022
    Publication date: May 2, 2024
    Applicants: POSCO CO., LTD, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Chi-Kyu Ahn, Chang-Houn Rhee, Gook-Hee Kim, Man-Su Lee, Hai-Woong Park, Beom-Sik Kim, Seong-Min Son
  • Patent number: 10465123
    Abstract: Provided is a method of increasing an amount of coke-oven gas, including the step of: introducing steam into a gas way of a carbonization chamber of a coke oven such that a water-gas reaction is conducted at 500° C. or higher during a process of carbonizing coal in the carbonization chamber of the coke oven, wherein the starting point of steam into the gas way is moved up prior to a time point at which an amount of generation of coke-oven gas is maximized, so as to increase the steam introduction time, thereby maximizing a reaction of steam with carbon existing in the carbonization chamber of the coke oven.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: November 5, 2019
    Assignees: POSCO, Research Institute of Industrial Science and Techn
    Inventors: Joo Hyoung Park, Chang Houn Rhee
  • Patent number: 9255224
    Abstract: Provided is a method of amplification of coke oven gas (COG) through reacting high-temperature carbon with carbon dioxide and/or water using waste heat generated in a coke oven. More particularly, a method of amplification of COG including providing a gasification agent including carbon dioxide, water, or a mixture thereof to a COG stream in a carburization chamber of a coke oven and gasifying carbon by allowing the gasification agent to react with carbon in the carburization chamber, and a coke oven apparatus suitable for the method are provided.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: February 9, 2016
    Assignee: Research Institute of Industrial Science & Technology
    Inventors: Joo-Hyoung Park, Hee-Dong Chun, Je-Young Kim, Heung-Soo Park, Min-Young Yi, Kun-Woo Han, Chang-Houn Rhee, Sung-Uk Ryu
  • Publication number: 20150218458
    Abstract: Provided is a method of increasing an amount of coke-oven gas, including the step of: introducing steam into a gas way of a carbonization chamber of a coke oven such that a water-gas reaction is conducted at 500° C. or higher during a process of carbonizing coal in the carbonization chamber of the coke oven, wherein the starting point of steam into the gas way is moved up prior to a time point at which an amount of generation of coke-oven gas is maximized, so as to increase the steam introduction time, thereby maximizing a reaction of steam with carbon existing in the carbonization chamber of the coke oven.
    Type: Application
    Filed: October 4, 2012
    Publication date: August 6, 2015
    Inventors: Joo Hyoung Park, Chang Houn Rhee
  • Patent number: 8378039
    Abstract: [Summary] The present invention relates to an apparatus for manufacturing polymer particles and a method for manufacturing the same. The present invention provides an apparatus and a method, by which polymer particles having excellent monodispersity and homogeneous physical properties, such as homogeneous cross-linking degree and polymerization degree, may be efficiently prepared. In the present invention, particles having excellent monodispersity with the desired particle diameter, and also having a high cross-linking degree or a core-shell or core-double shell structure may also be effectively prepared. In addition, the processes for manufacturing said polymer particles are exceptionally reproducible in the present invention.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: February 19, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Jae Hoon Choe, Chang Houn Rhee, Jung Hyun Seo, Yoo Seok Kim, In Hyoup Song, Jung Uk Choi, Kwang Ho Song
  • Publication number: 20120305381
    Abstract: Provided is a method of amplification of coke oven gas (COG) through reacting high-temperature carbon with carbon dioxide and/or water using waste heat generated in a coke oven. More particularly, a method of amplification of COG including providing a gasification agent including carbon dioxide, water, or a mixture thereof to a COG stream in a carburization chamber of a coke oven and gasifying carbon by allowing the gasification agent to react with carbon in the carburization chamber, and a coke oven apparatus suitable for the method are provided.
    Type: Application
    Filed: December 29, 2010
    Publication date: December 6, 2012
    Applicant: Research Institute of Industrial Science & Technology
    Inventors: Joo-Hyoung Park, Hee-Dong Chun, Je-Young Kim, Heung-Soo Park, Min-Young Yi, Kun-Woo Han, Chang-Houn Rhee, Sung-Uk Ryu
  • Patent number: 8173712
    Abstract: The present invention relates to a modified inorganic material with excellent cation exchange capacity. In addition, the invention relates to a method of preparing the modified inorganic material, a composite electrolyte membrane comprising the modified inorganic material powder that has excellent methanol-repelling ability, and a fuel cell comprising the composite electrolyte membrane. The modified inorganic material includes an inorganic material, and a cation exchanger bonded to the inorganic material.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: May 8, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Hae-kyoung Kim, Jae-sung Lee, Hyun-chul Lee, Hyuk Chang, Chang-houn Rhee
  • Patent number: 8052939
    Abstract: The present invention discloses to a channel reactor system having a first channel plate assembly in which an exothermic reaction is performed and a second channel plate assembly provided for heat-exchanging and constituted integrally with the first channel plate assembly so as to remove effectively heat, the channel reactor system comprising at least two channel units into which reaction gas and cooling fluid are separately introduced, each channel unit comprising a reaction channel plate assembly into which reaction gas is introduced and a heat-exchanging channel plate assembly into which cooling fluid is introduced; and at least one intermediate plate disposed between the upper and lower channel units, the intermediate plate supplying reaction gas and cooling fluid inflowed from the upper channel unit with new reactant and cooling fluid and supplying reaction gas and cooling fluid to the reaction channel plate assembly and the heat-exchanging channel plate assembly of the lower channel unit, respectively.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: November 8, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Jun Yeon Cho, Jung Uk Choi, Jae Hoon Choe, Kwang Cheon Park, Chang Houn Rhee, Sun Hyuk Bae, Kwang Ho Song
  • Publication number: 20110263800
    Abstract: [Summary] The present invention relates to an apparatus for manufacturing polymer particles and a method for manufacturing the same. The present invention provides an apparatus and a method, by which polymer particles having excellent monodispersity and homogeneous physical properties, such as homogeneous cross-linking degree and polymerization degree, may be efficiently prepared. In the present invention, particles having excellent monodispersity with the desired particle diameter, and also having a high cross-linking degree or a core-shell or core-double shell structure may also be effectively prepared. In addition, the processes for manufacturing said polymer particles are exceptionally reproducible in the present invention.
    Type: Application
    Filed: November 23, 2009
    Publication date: October 27, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Jae Hoon Choe, Chang Houn Rhee, Jung Hyun Seo, Yoo Seok Kim, In Hyoup Song, Jung Uk Choi, Kwang Ho Song
  • Patent number: 7988936
    Abstract: The present invention discloses to a chemical reactor with high heat efficiency and small volume, the chemical reaction of the present invention comprises a first unit for performing heat exchange of exothermic reaction products with exothermic reaction raw material fed for exothermic reaction; a second unit including a plate assembly for exothermic reactions and a plate assembly for endothermic reactions; and a third unit for performing heat exchange of endothermic reaction products with endothermic reaction raw material fed for endothermic reactions.
    Type: Grant
    Filed: July 19, 2007
    Date of Patent: August 2, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Jun Yeon Cho, Jae Hoon Choe, Kwang Cheon Park, Gyea-Young Kwak, Chang Houn Rhee, Sun Hvuk Bae, Jung Uk Choi, Kwang Ho Song
  • Publication number: 20100015016
    Abstract: The present invention discloses to a channel reactor system having a first channel plate assembly in which an exothermic reaction is performed and a second channel plate assembly provided for heat-exchanging and constituted integrally with the first channel plate assembly so as to remove effectively heat, the channel reactor system comprising at least two channel units into which reaction gas and cooling fluid are separately introduced, each channel unit comprising a reaction channel plate assembly into which reaction gas is introduced and a heat-exchanging channel plate assembly into which cooling fluid is introduced; and at least one intermediate plate disposed between the upper and lower channel units, the intermediate plate supplying reaction gas and cooling fluid inflowed from the upper channel unit with new reactant and cooling fluid and supplying reaction gas and cooling fluid to the reaction channel plate assembly and the heat-exchanging channel plate assembly of the lower channel unit, respectively.
    Type: Application
    Filed: May 29, 2007
    Publication date: January 21, 2010
    Applicant: LG CHEM, LTD.
    Inventors: Jun-Yeon Cho, Jung Uk Choi, Jae Hoon Choe, Kwang Cheon Park, Chang Houn Rhee, Sun Hyuk Bae, Kwang Ho Song
  • Publication number: 20090311150
    Abstract: The present invention discloses to a chemical reactor with high heat efficiency and small volume, the chemical reaction of the present invention comprises a first unit for performing heat exchange of exothermic reaction products with exothermic reaction raw material fed for exothermic reaction; a second unit including a plate assembly for exothermic reactions and a plate assembly for endothermic reactions; and a third unit for performing heat exchange of endothermic reaction products with endothermic reaction raw material fed for endothermic reactions, the exothermic reaction raw material discharged from the first unit is fed into the plate assembly for exothermic reactions in the second unit and used in the exothermic reactions, the exothermic reaction products are fed into the first unit to pre-heat the exothermic reaction raw material, the endothermic reaction raw material discharged from the third unit is fed into the plate assembly for endothermic reactions in the second unit and used in the endothermic
    Type: Application
    Filed: July 19, 2007
    Publication date: December 17, 2009
    Applicant: LG Chem, Ltd.
    Inventors: Jun Yeon Cho, Jae Hoon Choe, Kwang Cheon Park, Gyea-Young Kwak, Chang Houn Rhee, Sun Hyuk Bae, Jung Uk Choi, Kwang Ho Song
  • Patent number: 7368198
    Abstract: A hydrogen ionic conductive inorganic material having a layered structure, wherein a moiety containing a functional group with hydrogen ionic conductivity is introduced between layers of an inorganic material having a nano-sized interlayer distance. A polymer nanocomposite membrane including a reaction product of the hydrogen ionic conductive inorganic material and a conductive polymer, and a fuel cell using the same, are also provided. In the polymer nanocomposite membrane, a conductive polymer may be intercalated to a hydrogen ionic conductive inorganic material having a layered structure or products exfoliated from an inorganic material having a layered structure are dispersed in a conductive polymer.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: May 6, 2008
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Hae-kyoung Kim, Jae-sung Lee, Chang-houn Rhee, Hyuk Chang
  • Publication number: 20050282052
    Abstract: The present invention relates to a modified inorganic material with excellent cation exchange capacity. In addition, the invention relates to a method of preparing the modified inorganic material, a composite electrolyte membrane comprising the modified inorganic material powder that has excellent methanol-repelling ability, and a fuel cell comprising the composite electrolyte membrane. The modified inorganic material includes an inorganic material, and a cation exchanger bonded to the inorganic material.
    Type: Application
    Filed: June 13, 2005
    Publication date: December 22, 2005
    Inventors: Hae-kyoung Kim, Jae-sung Lee, Hyun-chul Lee, Hyuk Chang, Chang-houn Rhee
  • Publication number: 20050084728
    Abstract: A hydrogen ionic conductive inorganic material having a layered structure, wherein a moiety containing a functional group with hydrogen ionic conductivity is introduced between layers of an inorganic material having a nano-sized interlayer distance. A polymer nanocomposite membrane including a reaction product of the hydrogen ionic conductive inorganic material and a conductive polymer, and a fuel cell using the same, are also provided. In the polymer nanocomposite membrane, a conductive polymer may be intercalated to a hydrogen ionic conductive inorganic material having a layered structure or products exfoliated from an inorganic material having a layered structure are dispersed in a conductive polymer.
    Type: Application
    Filed: August 27, 2004
    Publication date: April 21, 2005
    Inventors: Hae-kyoung Kim, Jae-sung Lee, Chang-houn Rhee, Hyuk Chang