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    • 3. 发明公开
    • 배기가스 내의 아산화질소를 저온촉매환원법으로 제거하는 방법
    • 使用低温催化还原法在燃烧气体中除去氧化氮的方法
    • KR1020120104038A
    • 2012-09-20
    • KR1020110022098
    • 2011-03-11
    • 대구대학교 산학협력단
    • 김문현김대환
    • B01D53/86B01J23/38B01J29/068
    • Y02A50/2345Y02C20/10B01D53/86B01J23/38B01J29/068
    • PURPOSE: A method for removing nitrous oxide from exhaust gas based on low-temperature catalytic reduction is provided to remove nitrous oxide from nitric acid or exhaust gas under low reaction temperatures or high space velocities by using hydrogen as a reducing agent. CONSTITUTION: A method for removing nitrous oxide from exhaust gas based on low-temperature catalytic reduction includes the following: a catalyst is prepared by supporting 0.2 to 5 weight% of noble metals based on the total weight of the catalyst in a support; and nitrous oxide is reduced by using hydrogen as a reducing agent at the per-determined space velocity of a reactor and the pre-determined temperature of the reactor under the existence of the catalyst. The space velocity of the reactor is in a range between 50,000 and 250,000h^-1. The temperature of the reactor is in a range between 100 and 200 degrees Celsius. The noble metals are one or more selected from platinum, rhodium, palladium, ruthenium, gold, and silver. [Reference numerals] (AA) Removal rate of nitrogen dioxide; (BB) Reaction time(h); (CC) 1.72 weight% of platinum; (DD) Support=silicon dioxide; (EE) Reaction temperature=110 Deg C; (FF) Spatial speed(based on powder)=102.500h^-1; (GG) Concentration of nitrogen dioxide = 500ppm; (HH) Concentration of hydrogen = 500ppm; (II) 0.65 weight% of platinum
    • 目的:提供一种基于低温催化还原从废气中除去一氧化二氮的方法,通过使用氢作为还原剂,在低反应温度或高空速下从硝酸或废气中除去一氧化二氮。 构成:基于低温催化还原从废气中除去一氧化二氮的方法包括以下步骤:通过在载体中以催化剂的总重量为基础,以0.2至5重量%的贵金属为载体制备催化剂; 并且在反应器的确定的空速下使用氢作为还原剂并在催化剂存在下反应器的预定温度来还原一氧化二氮。 反应器的空间速度在50,000和250,000h ^ -1之间。 反应器的温度在100至200摄氏度之间。 贵金属是选自铂,铑,钯,钌,金和银中的一种或多种。 (附图标记)(AA)二氧化氮的去除率; (BB)反应时间(h); (CC)1.72重量%铂; (DD)支持=二氧化硅; (EE)反应温度= 110℃; (FF)空速(基于粉末)= 102.500h ^ -1; (GG)二氧化氮浓度= 500ppm; (HH)氢气浓度= 500ppm; (II)0.65重量%的铂
    • 5. 发明公开
    • 배기가스 내의 아산화질소를 저온촉매환원법으로 제거하는 방법
    • 使用低温催化还原法在燃烧气体中除去氧化氮的方法
    • KR1020130096212A
    • 2013-08-29
    • KR1020130089709
    • 2013-07-29
    • 대구대학교 산학협력단
    • 김문현김대환
    • B01D53/86B01D53/56B01J23/38B01J29/068
    • Y02C20/10Y02P20/328B01D53/86B01D53/56B01J23/38B01J29/068
    • PURPOSE: A method of removing nitrous oxide in the exhaust gas is provided to remove N2O in the exhaust gas emitted from an adipic acid manufacturing process to the level of being used in a real work field by employing hydrogen as a reducing agent at low reaction velocity and high space velocity. CONSTITUTION: A method of removing nitrous oxide in exhaust gas comprises the steps of: reducing nitrous oxide at the space velocity of a reactor of 50,000-250,000 h^-1 and the temperature of the rector of 100-200°C by using hydrogen as a reducing agent under the existence of a catalyst in which 0.2-5 wt% of precious metal based on the total weight percentage of the catalyst is backed up to a supporter; reducing nitrous oxide at space velocity and temperature of the reactor on a catalyst power basis. The precious metal is selected from one of platinum, rhodium, palladium, ruthenium, gold and silver. The supporter is silicon dioxide, titanium dioxide, dialuminum trioxide, activated charcoal or zeolite. [Reference numerals] (AA) Rate of nitrogen dioxide rejection (%); (BB) Reaction time (h); (CC) 1.72 weight% platinum; (DD) Supporter = silicon dioxide; (EE) Reaction temperature = 110°C; (FF) Space velocity (powder standard) = 102,500h^-1; (GG) Nitrogen dioxide concentration = 500ppm; (HH) Hydrogen concentration = 500 ppm; (II) 0.65 weight% platinum
    • 目的:提供一种去除排气中的一氧化二氮的方法,以将从己二酸制造过程排出的排气中的N2O除去在实际工作场所中使用的水平,通过在低反应速度下使用氢作为还原剂 和高空速。 构成:废气中一氧化二氮除去的方法包括以下步骤:在500-250,000h -1的反应器的空间速度下还原一氧化二氮,使用氢气作为反应器的温度为100-200℃ 存在催化剂的还原剂,其中基于催化剂总重量百分比的0.2-5重量%的贵金属被支撑到支持体上; 在催化剂功率的基础上在反应器的空间速度和温度下还原一氧化二氮。 贵金属选自铂,铑,钯,钌,金和银之一。 支持者是二氧化硅,二氧化钛,三氧化二铝,活性炭或沸石。 [参考数字](AA)二氧化氮排出率(%); (BB)反应时间(h); (CC)1.72重量%铂; (DD)支持者=二氧化硅; (EE)反应温度= 110℃; (FF)空速(粉末标准)= 102,500h ^ -1; (GG)二氧化氮浓度= 500ppm; (HH)氢浓度= 500ppm; (II)0.65重量%铂