-
公开(公告)号：KR100892483B1
公开(公告)日：2009-04-10
申请号：KR1020060076274
申请日：2006-08-11
Applicant: 현대자동차주식회사
CPC classification number: F01N3/10 , B01J23/50 , B01J29/40 , B01J29/46 , B01J35/0006 , B01J35/1019 , F01N2370/04
Abstract: 본 발명은 질소산화물 제거용 이중 층 촉매 시스템(dual bed catalytic system)에 관한 것으로서, 더욱 상세하게는 은(Ag)담지 알루미나(Al
2 O
3 )와 제올라이트(ZSM―5)를 포함하므로 기존의 은(Ag)담지 알루미나(Al
2 O
3 ) 촉매 또는 제올라이트(ZSM―5)를 단독으로 사용할 경우보다 질소산화물 제거효율이 월등히 향상된 결과를 얻을 수 있으며, 특히 은(Ag)담지 알루미나(Al
2 O
3 ) 촉매 만으로는 질소산화물 제거 활성이 거의 나타나지 않는 저온 (300 ℃) 의 조건에서도 높은 질소산화물 제거 활성을 나타내는 이중 층 촉매 시스템에 관한 것이다.
질소산화물, 이중 층, 촉매, 알루미나, 제올라이트-
公开(公告)号：KR100878944B1
公开(公告)日：2009-01-19
申请号：KR1020070083453
申请日：2007-08-20
Applicant: 현대자동차주식회사 , 포항공과대학교 산학협력단
Abstract: A reducing agent control device and method of the silver deposition alumina catalyst is provided to improve the fuel economy by controlling the optimum C1/NOx ratio according to temperature and spraying the reducing agent on the front of a catalyst. A reducing agent control device of the silver deposition alumina catalyst comprises a temperature and the NOx sensor(11) sensing the exhaust temperature and NOx; a controller(12) controlling amount of the reducing agent calculated through the C1/NOx ratio according to the exhaust temperature; a reducing agent tank(14) storing the reducing agent for returning the NOx to the nitrogen; a nozzle(16) spraying the reducing agent on front of the catalyst; and a flow controlling valve(19) supplying the reducing agent of the reducing agent tank to the nozzle.
Abstract translation: 提供银沉积氧化铝催化剂的还原剂控制装置和方法，以通过根据温度控制最佳C1 / NOx比并将还原剂喷射在催化剂的前面来提高燃料经济性。 银沉积氧化铝催化剂的还原剂控制装置包括温度和感测排气温度和NOx的NOx传感器（11）; 控制器（12），根据排气温度控制通过C1 / NOx比计算的还原剂的量; 储存用于将NOx还原到氮气的还原剂的还原剂罐（14） 将所述还原剂喷射到所述催化剂前面的喷嘴（16）; 以及将还原剂罐的还原剂供给到喷嘴的流量控制阀（19）。
-
公开(公告)号：KR1020060007975A
公开(公告)日：2006-01-26
申请号：KR1020040057606
申请日：2004-07-23
Applicant: 현대자동차주식회사 , 학교법인 포항공과대학교
CPC classification number: G01N31/224 , G01N33/0037 , Y02A50/245 , Y10T436/175383 , G01N31/227
Abstract: A method of performing quantitative analysis of nitrogen oxides occluded in heterogeneous catalysts, comprising the following steps, each performed in parallel for multiple samples: adsorption of nitrogen oxides by multiple samples using a batch adsorption apparatus, extraction of nitrogen oxides from the occluded samples using a solvent, reduction of nitrogen oxides to nitrite ions contained in the extract using hydrazine, and detection and quantification of nitrogen oxides by colorization using a modified Griess reagent. The method of the invention requires less time and expense as compared to the conventional method, wherein the process of serial adsorption, purge, desorption, and quantification is performed repeatedly to quantify the amount of nitrogen oxides adsorbed onto multiple samples. This method enables the efficient and reliable evaluation of nitrogen oxide adsorbing catalysts, which are commonly employed in automobiles for post-treatment of exhaust gases.
-
公开(公告)号：KR100250816B1
公开(公告)日：2000-04-01
申请号：KR1019970081453
申请日：1997-12-31
Applicant: 현대자동차주식회사
Inventor： 길정기
Abstract: PURPOSE: Disclosed is a preparing method of sodium-cobalt oxide catalyst for flue gas treatment of automobile, which is prepared by deposition of cobalt oxide from reaction with cobalt-containing compound and sodium carbonate. CONSTITUTION: After deposition of cobalt oxide (Co3O4) from mixture of cobalt nitrate hydrate (Co(NO3)3 6H2O) and sodium carbonate (Na2CO3) solution, the catalyst for flue gas treatment is prepared by incipient wetness method of sodium species. And, in order to remove sodium carbonate in the deposited cobalt oxide, a washing process is carried out using double deionized water. The catalyst, Co3O4, is dried at 80 - 120 deg. C for 10 - 14 h and calcined at 350 - 450 deg. C for 3 - 5 h. The incipient wetness method has sodium species be co-precipitate on the catalyst with the condition of atomic ratio of Na to Co of 0.005 - 0.03. The precipitated Na-Co3O4 catalyst is dried at 80 - 100 deg. C for 1 - 2 h and calcined at 550 - 600 deg. C for 15 - 17 h.
Abstract translation: 目的：公开了一种用于汽车烟气处理的氧化钴 - 氧化钴催化剂的制备方法，其通过与含钴化合物和碳酸钠反应沉积氧化钴制备。 构成：在硝酸钴水合物（Co（NO 3）3·6H 2 O）和碳酸钠（Na 2 CO 3）溶液的混合物中沉积氧化钴（Co 3 O 4）后，通过钠物质的初始湿法制备烟气处理催化剂。 并且为了除去沉积的氧化钴中的碳酸钠，使用双去离子水进行洗涤过程。 将催化剂Co 3 O 4在80-120℃干燥。 10至14小时，并在350-450度煅烧。 C 3〜5小时。 初始湿度法在钠与钴的原子比为0.005〜0.03的条件下，在催化剂上共沉淀钠。 将沉淀的Na-Co 3 O 4催化剂在80-100℃干燥。 在1-200℃下煅烧，在550-600℃煅烧。 C为15 - 17 h。
-
公开(公告)号：KR1019990061197A
公开(公告)日：1999-07-26
申请号：KR1019970081453
申请日：1997-12-31
Applicant: 현대자동차주식회사
Inventor： 길정기
Abstract: 본 발명은 코발트 화합물과 탄산나트륨(Na
2 CO
3 )을 반응시켜 산화코발트(Co
3 O
4 )를 석출시킨 다음 세척하고, 건조하고 소성하여 Co
3 O
4 촉매를 제조한 뒤 Na를 함침시켜 건조하고 소성하는 과정으로 구성되는 자동차 배기가스 정화용 Na-Co
3 O
4 촉매의 제조방법에 관한 것으로서, 본 발명의 제조방법에 의해 제조된 촉매는 Co
3 O
4 에 Na가 함침되기 때문에 촉매의 재현성을 향상시켜 자동차 배기가스 중의 질소산화물을 효과적으로 분해할 수 있는 우수한 촉매이다.-
Patent Agency Ranking
公开(公告)号：KR101316878B1
公开(公告)日：2013-10-08
申请号：KR1020120024054
申请日：2012-03-08
IPC: F01N3/031
CPC classification number: Y02T10/22
Abstract: 본 발명은 배기가스 여과 장치에 관한 것으로, 배기관과 연결된 외부 케이스, 전방 플랜지 및 후방 플랜지를 통해 상기 외부 케이스 내에 장착되며, 그 내측에는 배기 가스가 유입되는 배기 유입 통로가 형성되고, 상기 외부 케이스와 정화된 배기가스가 배출되도록 배기 유출 통로를 형성하는 여과유닛(filtering unit); 상기 전방 플랜지 내측에 구비되며, 그 내측에 상기 배기 유입 통로와 상기 배기 유출 통로를 연통하는 압력 릴리프 패스를 형성하는 압력 릴리프 플랜지; 상기 압력 릴리프 패스에 구비되는 압력 릴리프 메탈 폼; 및 상기 압력 릴리프 메탈 폼을 지지하도록 상기 압력 릴리프 패스의 지름 방향으로 구비되는 지지체;를 포함한다.
-
公开(公告)号：KR101126247B1
公开(公告)日：2012-03-19
申请号：KR1020090118737
申请日：2009-12-02
Abstract: 본 발명은 희토류 금속 (rare earth metal)을 함유하는, 배기가스내 질소 산화물의 선택적 환원용 촉매에 관한 것으로서, 더욱 상세하게는 4 내지 40 중량%의 희토류 금속이 조촉매로 사용된 망간(Mn)-철(Fe)/제올라이트(Zeolite) 촉매에 관한 것이다.
본 발명에 따라 제조된 희토류 금속이 함유된 망간(Mn)-철(Fe)/제올라이트 촉매는 우수한 질소 산화물 제거활성을 나타낼 뿐만 아니라, 기존의 망간(Mn)-철(Fe)/제올라이트 촉매의 가장 큰 문제점인 수열에 의한 촉매의 활성저하 (catalyst aging)를 극복하여 우수한 수열 안정성을 나타내는 장점이 있어, 배기가스, 특히 자동차용 배기가스 내 질소 산화물의 선택적 환원용 촉매로 유용하게 사용될 수 있다.
질소산화물, 수열안정성, 희토류 금속, 제올라이트, 망간, 철, 함침법-
公开(公告)号：KR1020090100642A
公开(公告)日：2009-09-24
申请号：KR1020080025943
申请日：2008-03-20
Applicant: 현대자동차주식회사
Inventor： 길정기
CPC classification number: Y02A50/2325 , Y02T10/24 , F01N3/20 , F01N3/035 , F01N2510/06 , F01N2610/02 , F01N2610/1453
Abstract: PURPOSE: A diesel exhaust after-treatment device and method are provided to increase the position degree of freedom of a reducing agent injection system by employing a metal filter with improved flow property. CONSTITUTION: A diesel exhaust after-treatment device comprises a DOC(100), a reducing agent injection system(200), and a metal filter(300). The DOC(Diesel Oxidation Catalyst) purifies hydride compound(HC) and carbon monoxide(CO) included in exhaust gas produced from a diesel engine. The metal filter allows for quick flow diffusion of the exhaust gas having passed through the DOC, and collects smoke(C,PM) in the flow diffusion of the exhaust gas. The reducing agent injection system is installed between the DOC and the metal filter and sprays a reducing agent to remove nitric oxide(NOx) included in the exhaust gas.
Abstract translation: 目的：提供一种柴油机废气后处理装置和方法，通过采用具有改善的流动性的金属过滤器来增加还原剂注射系统的位置自由度。 构成：柴油机废气后处理装置包括DOC（100），还原剂注入系统（200）和金属过滤器（300）。 DOC（柴油氧化催化剂）净化由柴油发动机产生的废气中所含的氢化物（HC）和一氧化碳（CO）。 金属过滤器允许通过DOC的废气的快速流动扩散，并且在废气的流动扩散中收集烟雾（C，PM）。 还原剂注入系统安装在DOC和金属过滤器之间并喷射还原剂以除去废气中所含的一氧化氮（NOx）。
-
公开(公告)号：KR1020080014486A
公开(公告)日：2008-02-14
申请号：KR1020060076274
申请日：2006-08-11
Applicant: 현대자동차주식회사
CPC classification number: F01N3/10 , B01J23/50 , B01J29/40 , B01J29/46 , B01J35/0006 , B01J35/1019 , F01N2370/04
Abstract: A dual bed catalytic system comprising Ag/Al2O3 and a ZSM-5 zeolite catalyst is provided to obtain an excellent NOx removing effect, wherein the dual bed catalytic system can be used widely as an industrial catalyst for the reduction of NOx released from various types of fixed sources or moving sources at a temperature of at least 300 deg.C. A dual bed catalytic system for the removal of NOx comprises silver(Ag) supported alumina(Al2O3) and a zeolite(ZSM-5). The silver(Ag) supported alumina(Al2O3) and the zeolite(ZSM-5) are stacked in the dual bed catalytic system. The dual bed catalytic system comprises 1 to 5 wt.% of the silver(Ag) supported alumina(Al2O3) and 95 to 99 wt.% of the zeolite(ZSM-5). The zeolite(ZSM-5) has copper(Cu) supported thereon. The copper(Cu) supported zeolite(ZSM-5) comprises 0 to 5 wt.% of copper(Cu) and 95 to 100 wt.% of a zeolite(ZSM-5). The dual bed catalytic system comprises the silver(Ag) supported alumina(Al2O3) and the zeolite(ZSM-5) in a volume ratio range of 4:1 to 1:4. The silver(Ag) supported alumina(Al2O3) is positioned at a front part of a catalytic converter, and the zeolite(ZSM-5) is positioned at a rear part of the catalytic converter. The dual bed catalytic system comprising a hydrocarbon compound having 6 to 16 carbon atoms as a reducing agent.
Abstract translation: 提供了包含Ag / Al 2 O 3和ZSM-5沸石催化剂的双床催化体系以获得优异的NOx去除效果，其中双床催化体系可广泛用作用于减少从各种类型的 固定源或移动源，温度至少为300摄氏度。 用于去除NOx的双床催化体系包括银（Ag）负载的氧化铝（Al 2 O 3）和沸石（ZSM-5）。 银（Ag）负载氧化铝（Al2O3）和沸石（ZSM-5）堆叠在双床催化体系中。 双床催化体系包含1至5重量％的银（Ag）负载氧化铝（Al 2 O 3）和95至99重量％的沸石（ZSM-5）。 沸石（ZSM-5）具有负载的铜（Cu）。 铜（Cu）负载的沸石（ZSM-5）包含0-5重量％的铜（Cu）和95-100重量％的沸石（ZSM-5）。 双床催化体系包含体积比为4:1至1:4的银（Ag）负载氧化铝（Al2O3）和沸石（ZSM-5）。 银（Ag）负载氧化铝（Al2O3）位于催化转化器的前部，沸石（ZSM-5）位于催化转化器的后部。 该双床催化体系包含碳原子数为6〜16的烃化合物作为还原剂。
-
公开(公告)号：KR100656026B1
公开(公告)日：2006-12-08
申请号：KR1020050096318
申请日：2005-10-13
Applicant: 현대자동차주식회사 , 학교법인 포항공과대학교
Abstract: A method for quantitatively analyzing aromatic hydrocarbon absorbed in a catalyst is provided to promptly and reliably evaluate the characteristics and efficiency of the hydrocarbon absorbing catalyst. A method for quantitatively analyzing aromatic hydrocarbon absorbed in a catalyst includes the steps of: passing a gas including the aromatic hydrocarbon through an absorption catalyst to absorb the aromatic hydrocarbon to the absorption catalyst; obtaining a test material from the absorption catalyst and applying a solvent to the test material and shaking the test material to flow out the aromatic hydrocarbon; and measuring the light absorption degree by using an UV light absorption degree.
Abstract translation: 提供一种定量分析催化剂中吸收的芳烃的方法，以快速可靠地评估烃吸收催化剂的特性和效率。 定量分析催化剂中吸收的芳烃的方法包括以下步骤：使包含芳烃的气体通过吸收催化剂以将芳烃吸收到吸收催化剂; 从吸收催化剂获得测试材料并将溶剂施加到测试材料上并摇动测试材料以流出芳烃; 并通过使用UV光吸收度来测量光吸收程度。
-
-
-
-
-
-
-
-
-
Search Results
23
records
(took 0.022 seconds)
