Patents by Inventor Keh-Sik Min
Keh-Sik Min 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).
-
Patent number: 8729141Abstract: Disclosed is a method for methanol synthesis using synthesis gas obtained from reforming of natural gas with carbon dioxide. First, synthesis gas is obtained from steam carbon dioxide reforming of methane, in which steam reforming of natural gas is carried out simultaneously with carbon dioxide reforming of methane, by using a catalyst (Ni/Ce/MgAlOx, or Ni/Ce—Zr/MgAlOx) and processing condition capable of maintaining a predetermined ratio of carbon monoxide, carbon dioxide, and hydrogen [H2/(2CO+3CO2)=0.85-1.15]. Next, methanol synthesis is carried out by using the obtained synthesis gas and a catalyst system suitable for methanol synthesis with minimum byproduct formation (a catalyst system including a Cu—Zn—Al oxide containing CuO, ZnO, and Al2O3 at a predetermined ratio in combination with a cerium-zirconium oxide obtained by a sol-gel process).Type: GrantFiled: September 14, 2009Date of Patent: May 20, 2014Assignees: Hyundai Heavy Industries Co., Ltd., Korea Research Institute of Chemical TechnologyInventors: Jong Wook Bae, Jong Hyeok Oh, Ki Won Jun, Yun Jo Lee, Jun-ho Ko, Seok-Lyong Song, Keh-Sik Min
-
Patent number: 8623927Abstract: Disclosed are a catalyst for synthesis of methanol from synthesis gas and a method for preparing the same. The catalyst includes a Cu—Zn—Al oxide containing CuO, ZnO and Al2O3 in a predetermined ratio or Cu—Zn—Al—Zr oxide containing CuO, ZnO, Al2O3 and ZrO2 in a predetermined ratio, in combination with a cerium-zirconium oxide obtained by a sol-gel process. As compared to the existing Cu—Zn—Al catalysts for synthesizing methanol, the catalyst disclosed herein inhibits formation of byproducts and improves yield of methanol. Therefore, it is possible to improve methanol purification efficiency and carbon conversion efficiency.Type: GrantFiled: July 24, 2009Date of Patent: January 7, 2014Assignees: Hyundai Heavy Industries Co., Ltd., Korea Research Institute of Chemical TechnologyInventors: Suk-Hwan Kang, Jong Wook Bae, Ki Won Jun, Keh-Sik Min, Seok-Lyong Song, Sam-Heon Jeong
-
Patent number: 8524119Abstract: Disclosed are a catalyst for preparing synthesis gas from natural gas and carbon dioxide, and a method for preparing the same. More particularly, a combined reforming process is performed as an economical way of using carbon dioxide, wherein steam reforming of natural gas is carried out simultaneously with carbon dioxide reforming of methane in such a manner that a predetermined ratio of carbon monoxide/carbon dioxide/hydrogen (H2/(2CO+3CO2)=0.85-1.15) is maintained. In this manner, the catalyst is used to prepare synthesis gas suitable for methanol synthesis and Fischer-Tropsch synthesis. Disclosed also is a method for preparing synthesis gas on a specific catalyst consisting of Ni/Ce/MgAlOx or Ni/Ce-Zr/MgAlOx. The catalyst is inhibited from deactivation caused by generation of cokes during the reaction as well as deactivation caused by reoxidation of nickel with water added during the reaction. Therefore, the catalyst shows excellent activity as compared to other catalysts for use in combined reforming.Type: GrantFiled: July 30, 2009Date of Patent: September 3, 2013Assignees: Hyundai Heavy Industries Co., Ltd., Korea Research Institute of Chemical TechnologyInventors: Ki Won Jun, Seung-Chan Baek, Jong Wook Bae, Keh-Sik Min, Seok-Lyong Song, Tae-Young Oh
-
Publication number: 20120111258Abstract: An air cavity vessel having longitudinal and transverse partitions is provided. The air cavity vessel, which injects air into the bottom thereof to form air layers in order to reduce resistance of the vessel, includes transverse partitions partitioning the bottom in a transverse direction, longitudinal partitions partitioning the bottom in a longitudinal direction, spatial areas defined in a grid pattern by the transverse partitions and the longitudinal partitions, an air supply unit installed in a forebody of the vessel and supplying compressed air into the spatial areas, and a compressor for supplying the compressed air to the air supply unit. Thereby, multiple air layers are formed on a bottom flat area on a small scale.Type: ApplicationFiled: November 9, 2010Publication date: May 10, 2012Applicant: HYUNDAI HEAVY INDUSTRIES CO., LTD.Inventors: Keh-Sik MIN, Seok-Cheon GO, Hong-Gi LEE
-
Patent number: 8166899Abstract: An air cavity vessel having longitudinal and transverse partitions is provided. The air cavity vessel, which injects air into the bottom thereof to form air layers in order to reduce resistance of the vessel, includes transverse partitions partitioning the bottom in a transverse direction, longitudinal partitions partitioning the bottom in a longitudinal direction, spatial areas defined in a grid pattern by the transverse partitions and the longitudinal partitions, an air supply unit installed in a forebody of the vessel and supplying compressed air into the spatial areas, and a compressor for supplying the compressed air to the air supply unit. Thereby, multiple air layers are formed on a bottom flat area on a small scale.Type: GrantFiled: November 9, 2010Date of Patent: May 1, 2012Assignee: Hyundai Heavy Industries Co., Ltd.Inventors: Keh-Sik Min, Seok-Cheon Go, Hong-Gi Lee
-
Publication number: 20110237689Abstract: Disclosed is a method for methanol synthesis using synthesis gas obtained from reforming of natural gas with carbon dioxide. First, synthesis gas is obtained from steam carbon dioxide reforming of methane, in which steam reforming of natural gas is carried out simultaneously with carbon dioxide reforming of methane, by using a catalyst (Ni/Ce/MgAlOx, or Ni/Ce—Zr/MgAlOx) and processing condition capable of maintaining a predetermined ratio of carbon monoxide, carbon dioxide, and hydrogen [H2/(2CO+3CO2)=0.85-1.15] Next, methanol synthesis is carried out by using the obtained synthesis as and a catalyst system suitable for methanol synthesis with minimum byproduct formation (a catalyst system including a Cu—Zn—Al oxide containing CuO, ZnO, and Al2O3 at a predetermined ratio in combination with a cerium-zirconium oxide obtained by a sol-gel process).Type: ApplicationFiled: September 9, 2009Publication date: September 29, 2011Inventors: Jong Wook Bae, Jong Hyeok Oh, Ki Won Jun, Yun Jo Lee, Jun-ho Ko, Seok-Lyong Song, Keh-Sik Min
-
Publication number: 20110118367Abstract: Disclosed are a catalyst for synthesis of methanol from synthesis gas and a method for preparing the same. The catalyst includes a Cu—Zn—Al oxide containing CuO, ZnO and Al2O3 in a predetermined ratio or Cu—Zn—Al—Zr oxide containing CuO, ZnO, Al2O3 and ZrO2 in a predetermined ratio, in combination with a cerium-zirconium oxide obtained by a sol-gel process. As compared to the existing Cu—Zn—Al catalysts for synthesizing methanol, the catalyst disclosed herein inhibits formation of byproducts and improves yield of methanol. Therefore, it is possible to improve methanol purification efficiency and carbon conversion efficiency.Type: ApplicationFiled: July 24, 2009Publication date: May 19, 2011Inventors: Suk-Hwan Kang, Jong Wook Bae, Ki Won Jun, Keh-Sik Min, Seok-Lyong Song, Sam-Heon Jeong
-
Publication number: 20110114892Abstract: Disclosed are a catalyst for preparing synthesis gas from natural gas and carbon dioxide, and a method for preparing the same. More particularly, a combined reforming process is performed as an economical way of using carbon dioxide, wherein steam reforming of natural gas is carried out simultaneously with carbon dioxide reforming of methane in such a manner that a predetermined ratio of carbon monoxide/carbon dioxide/hydrogen (H2/(2CO+3CO2)=0.85-1.15) is maintained. In this manner, the catalyst is used to prepare synthesis gas suitable for methanol synthesis and Fischer-Tropsch synthesis. Disclosed also is a method for preparing synthesis gas on a specific catalyst consisting of Ni/Ce/MgAlOx or Ni/Ce—Zr/MgAlOx. The catalyst is inhibited from deactivation caused by generation of cokes during the reaction as well as deactivation caused by reoxidation of nickel with water added during the reaction. Therefore, the catalyst shows excellent activity as compared to other catalysts for use in combined reforming.Type: ApplicationFiled: July 30, 2009Publication date: May 19, 2011Inventors: Ki Won Jun, Seung-Chan Baek, Jong Wook Bae, Keh-Sik Min, Seok-Lyong Song, Tae-Young Oh
-
Patent number: 7806067Abstract: Disclosed herein is a thrust fin for ships which recovers lost energy caused by rotational flow generated behind a propeller, and converts it into thrust. The thrust fin of the present invention has a simple shape, enhances propulsive efficiency of the ship, and can be applied to a real ship thanks to the simple installation thereof, to maximize thrust of the ship. The thrust fin is mounted to a front portion of the rudder of the ship such that left and right sides of the thrust fin, which are integrated with each other into a single body, are asymmetrical. A vertical position, at which the thrust fin is mounted to the rudder, is at an optimum position as determined in consideration of the shape of the rudder and hydrodynamic characteristics.Type: GrantFiled: December 8, 2005Date of Patent: October 5, 2010Assignee: Hyundai Heavy Industries Co., Ltd.Inventors: Keh-Sik Min, Bong-jun Chang, Hong-gi Lee
-
Publication number: 20080066669Abstract: Disclosed herein is a thrust fin (20) for ships which recovers lost energy caused by rotational flow generated behind a propeller (30), and converts it into thrust. The thrust fin (20) of the present invention has a simple shape, enhances propulsive efficiency of the ship, and can be applied to a real ship thanks to the simple installation thereof, to maximize thrust of the ship. The thrust fin (20) is mounted to a front portion of the rudder (10) of the ship such that left and right sides of the thrust fin, which are integrated with each other into a single body, are asymmetrical. A vertical position, at which the thrust fin (20) is mounted to the rudder (10), is at an optimum position as determined in consideration of the shape of the rudder and hydrodynamic characteristics.Type: ApplicationFiled: December 8, 2005Publication date: March 20, 2008Inventors: Keh-Sik Min, Bong-jun Chang, Hong-gi Lee
-
Publication number: 20020069810Abstract: The present invention relates to a polygonal section spar platform for drilling and production, which can raise efficiency in process and production and reduce manufacturing costs by making a section of a drilling and production spar platform in a polygonal shape. The drilling and production spar platform comprises a ballast tank, a spar hull, a mooring fairleader, a trim tank and a fixed ballast, wherein the spar hull, which is an underwater portion of the drilling and production spar platform, has a section being in the form of a polygon. By such spar platform, the present invention can largely increase the manufacturing performance and production and promote a general operational efficiency.Type: ApplicationFiled: March 5, 2001Publication date: June 13, 2002Applicant: HYUNDAI HEAVY INDUSTRIES CO. LTD.Inventors: Keh-Sik Min, In-Kyu Park, Hyun-Soo Sin