HEESUNG CATALYSTS CORPORATION Patent applications |
Patent application number | Title | Published |
20150051068 | IMPROVEMENT IN PROCESS FOR THERMAL FIXATION OF CATALYTICALLY ACTIVE COMPONENT ONTO ALUMINA SUPPORT - The present invention relates to an improvement in a process for the thermal fixation of a catalytically active component onto an alumina support and, more specifically, to an improvement in a process for the thermal fixation of a catalytically active component onto an alumina support for preparing a thermally stable catalyst for treating exhaust gas from an internal combustion engine, by means of thermally stable dispersion and fixation of the catalytically active component(s) for treating exhaust gas from an internal combustion engine, onto a surface or an internal space of the alumina support. | 02-19-2015 |
20140363578 | APPARATUS AND METHOD FOR QUANTITATIVELY COATING CATALYST SUPPORT - Disclosed herein is a method of coating a catalyst support, in which a monolithic catalyst support provided therein with a plurality of longitudinally formed channels is quantitatively coated with catalyst slurry applied to post-treatment of exhaust gas, including the steps of: introducing catalyst slurry into a quantitative container whose bottom is vertically moved; moving a catalyst support to the top of a container such that the bottom of the catalyst support and top of the container are horizontally disposed each other; sealing the bottom of the catalyst support and the top of the container from the outside; moving the bottom of the container upward; and applying a vacuum to the channels of the catalyst support. | 12-11-2014 |
20140349840 | AMMONIA OXIDATION CATALYST IN SCR SYSTEM - Disclosed herein is an ammonia oxidation catalyst for converting nitrogen oxides generated from a mobile source or fixed source into harmless nitrogen using ammonia as a reductant and preventing the formation of nitrogen oxides due to the oxidation of ammonia. The ammonia oxidation catalyst includes selective catalytic reductive zeolite sequentially impregnated with platinum and copper. | 11-27-2014 |
20130156669 | CATALYSTS FOR NOX REDUCTION EMPLOYING H2 AND A METHOD OF REDUCING NOX - Disclosed is a catalyst composition for reducing NOx through two steps including reacting NOx with H2 thus producing ammonia which is then reacted with NOx, instead of direct NOx reduction by H2, and a method of reducing NOx using the catalyst composition. | 06-20-2013 |
20130115141 | DEVICE FOR DISCHARGING EXHAUST GAS FROM DIESEL ENGINE, HAVING AMMONOLYSIS MODULE - The present invention relates to a device for discharging exhaust gas from a diesel engine by using hydrogen gas, which includes an ammonolysis module. More specifically, the present invention relates to a device for purifying exhaust gas of a diesel engine, wherein the device for discharging exhaust gas from a diesel engine comprises a DOC-DPF-LNT module formed in the downstream of diesel engine in a serial mode, further includes an ammonolysis module; the device for discharging exhaust gas from a diesel engine comprises a DOC-DPF-HC-SCR module formed in the downstream of diesel engine in a serial mode, further includes an ammonolysis module; and the device comprises an LNT-DPF module and an ammonolysis module. | 05-09-2013 |
20130089472 | NON-PGM CATALYST FOR BURNING CARBON SOOT, AND FILTRATION FILTER AND EXHAUST GAS POST-PROCESSING APPARATUS USING THE SAME - The present invention provides a non-PGM catalyst for burning carbon soot without using a noble metal, the non-PGM catalyst comprising: a cerium-praseodymium complex oxide and an iron oxide, the cerium-praseodymium complex oxide impregnated with silver (Ag). The cerium-praseodymium complex oxide illustratively consists of 60 to 95 wt % of cerium oxide and 5 to 40 wt % of praseodymium oxide, and silver (Ag) impregnated in the complex oxide is 1.5 to 3.0 parts by weight of the total weight of the complex oxide. The iron oxide may be an oxide in a form of particles separate from the cerium-praseodymium complex oxide in which silver is impregnated, and may be 0.5 to 2 parts by weight of the total weight of the cerium praseodymium complex oxide. | 04-11-2013 |
20130089471 | NON-PGM CATALYST FOR BURNING CARBON SOOT, AND FILTRATION FILTER AND EXHAUST GAS POST-PROCESSING APPARATUS USING THE SAME - The present invention provides a non-PGM catalyst for burning carbon soot without using a noble metal, the non-PGM catalyst comprising: a cerium-praseodymium complex oxide and an iron oxide, the cerium-praseodymium complex oxide impregnated with silver (Ag). The cerium-praseodymium complex oxide illustratively consists of 60 to 95 wt % of cerium oxide and 5 to 40 wt % of praseodymium oxide, and silver (Ag) impregnated in the complex oxide is 1.5 to 3.0 parts by weight of the total weight of the complex oxide. The iron oxide may be an oxide in a form of particles separate from the cerium-praseodymium complex oxide in which silver is impregnated, and may be 0.5 to 2 parts by weight of the total weight of the cerium praseodymium complex oxide. | 04-11-2013 |
20110150742 | CATALYSTS FOR NOX REDUCTION EMPLOYING H2 AND A METHOD OF REDUCING NOX - Disclosed is a catalyst composition for reducing NOx through two steps including reacting NOx with H2 thus producing ammonia which is then reacted with NOx, instead of direct NOx reduction by H2, and a method of reducing NOx using the catalyst composition. | 06-23-2011 |
20110126525 | NOVEL SCR CATALYSTS AND AFTER-TREATMENT DEVICES FOR DIESEL ENGINE EXHAUST GAS - Disclosed is an SCR catalyst composition having improved NOx conversion and a device for post-treating diesel engine exhaust gas using the same. The SCR catalyst composition can effectively convert NOx generated from an engine into harmless components. The device, which improves the NOx conversion, includes an SCR catalyst module disposed downstream of a diesel engine and having an injector, an oxidation catalyst module disposed downstream of the SCR catalyst module, and a catalyst soot filter module, all of which are successively arranged in series. | 06-02-2011 |
20090255237 | SCR Catalytic Converter Without NH3 or Urea Injection - The present invention relates to a Selective Catalytic Reduction (SCR) catalytic converter that does not require the injection of a reducing agent, and, particularly, to an open-flow type or wall-flow type SCR catalytic converter that does not require the injection of a reducing agent, which includes a front portion, in which first supports supporting modified catalyst components are applied on the inner surfaces of porous partition walls, a middle portion, in which second supports supporting ammonia synthesis catalyst components are applied on the inner surfaces of porous partition walls, and a rear portion, in which third supports supporting SCR reducing catalyst components are applied on the inner surfaces of porous partition walls. More particularly, the present invention relates to a catalytic converter, which can improve a reduction rate of NOx without requiring the injection of an ammonia reducing agent from the outside. | 10-15-2009 |
20090126353 | Oxidation Catalyst for NH3 and an Apparatus for Treating Slipped or Scripped NH3 - Disclosed herein are an ammonia oxidation catalyst and a system for treating slipped ammonia or waste ammonia using the oxidation catalyst. More specifically, disclosed are an ammonia oxidation catalyst comprising either Cu-containing zeolite impregnated with platinum or Cu-containing alumina impregnated with platinum, which has improved low-temperature activity to oxidize ammonia generated in a mobile source or fixed source system and is used to inhibit the formation of nitrogen oxides, as well as a system for treating ammonia contained in vehicle exhaust gas, a chemical reactor system and an environmental device and system, which include the oxidation catalyst. | 05-21-2009 |