会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 7. 发明申请
    • EXHAUST GAS TREATMENT SYSTEM
    • 排气处理系统
    • WO2017131567A1
    • 2017-08-03
    • PCT/SE2016/051250
    • 2016-12-13
    • SCANIA CV AB
    • RAYMAND, David
    • B01D53/94B01D53/96
    • B01D53/9477B01D53/944B01D53/96B01D2251/20B01D2255/1021B01D2255/20723B01D2255/9032B01D2257/404B01D2257/702
    • The invention relates to an exhaust gas treatment system (4) and a method for regenerating such an exhaust gas treatment system. The exhaust gas treatment system comprises: an oxidation catalyst assembly (10); a particulate filter (12) arranged downstream of the oxidation catalyst assembly; a reducing agent dosing device (14) arranged downstream of the particulate filter (12); and a selective catalytic reduction device (16) arranged downstream of the reducing agent dosing device (14). The oxidation catalyst assembly (10) comprises a first oxidation catalyst (18) arranged to selectively oxidise hydrocarbons present in the exhaust stream, at least partially, with substantially no concomitant oxidation of sulfur oxides present in the exhaust stream; and a second oxidation catalyst (20) arranged downstream of the first oxidation catalyst (18), arranged to oxidise hydrocarbons or partially oxidized hydrocarbons having slipped through the first oxidation catalyst (18), as well as to concomitantly oxidise NO to NO 2 . The system can be fuel-effectively regenerated when running on high-sulfur fuels in order to regenerate the particulate filter (12) as well as remove sulfur species deposited on the system catalysts. The invention further relates to a vehicle comprising such an exhaust gas treatment system.
    • 本发明涉及一种废气处理系统(4)和一种用于再生这种废气处理系统的方法。 废气处理系统包括:氧化催化剂组件(10); 布置在氧化催化剂组件下游的微粒过滤器(12) 布置在颗粒过滤器(12)下游的还原剂剂量装置(14); 和布置在还原剂定量供给装置(14)下游的选择性催化还原装置(16)。 所述氧化催化剂组件(10)包括第一氧化催化剂(18),所述第一氧化催化剂(18)布置成至少部分地选择性氧化存在于所述排气流中的烃,基本不伴随所述排气流中存在的硫氧化物的伴随氧化; 和设置在所述第一氧化催化剂(18)下游的第二氧化催化剂(20),所述第二氧化催化剂布置成氧化已经滑过所述第一氧化催化剂(18)的烃或部分氧化的烃,以及伴随地将NO氧化为NO < 2 。 当使用高硫燃料运行时,系统可以进行燃料有效再生,以便再生颗粒过滤器(12)以及去除沉积在系统催化剂上的硫物质。 本发明进一步涉及包含这种废气处理系统的车辆。
    • 8. 发明申请
    • PROCESS FOR THE REMOVAL OF CONTAMINANTS FROM FLUE GAS STREAMS
    • 从烟道气流中去除污染物的方法
    • WO2017106277A1
    • 2017-06-22
    • PCT/US2016/066549
    • 2016-12-14
    • CANNON TECHNOLOGY, INC.
    • SUCCHAK, Naresh, J.
    • B01D53/56
    • B01D53/78B01D53/1456B01D53/1493B01D53/50B01D53/56B01D53/64B01D53/75B01D2251/104B01D2251/206B01D2251/2067B01D2252/102B01D2252/2053B01D2257/302B01D2257/404B01D2258/0216B01D2258/0241B01D2258/025B01D2258/0283Y02A50/2345
    • A flue gas stream from fossil fuel fired sources and process gas streams from chemical, petroleum, and petrochemical operations and the like is directed to an exhaust duct, which conveys the flue gas stream containing nitrogen oxide contaminants into a quencher. The gas stream is conveyed through the quencher where aqueous medium is sprayed into contact with the flue gas stream. The quenched flue gas stream is mixed with ozone in a sub-stoichiometic amount for partial oxidation of NO X to form NO 2 and prevent the formation of N 2 O 5 . The flue gas containing NO 2 is absorbed into an acidic medium of a wet scrubber to form nitrous acid. The nitrous acid in the aqueous phase of the scrubber is mixed with selected compounds of ammonia to decompose the nitrous acid for release of nitrogen. The nitrogen oxide contaminants are removed from the flue gas stream in a process that minimizes the consumption of ozone and the operating costs associated therewith and eliminates the requirement to dispose of nitrate recovered from the scrubber purge stream.
    • 来自化石燃料燃烧源的烟道气流和来自化学,石油和石油化学操作等的工艺气流被引导至排气管道,该排气管道将含有氮氧化物污染物的烟道气流输送到 猝灭剂。 气流通过淬灭器输送,其中将含水介质喷雾到与烟道气流接触。 骤冷的烟道气流与亚化学计量的臭氧混合,用于NO X的部分氧化形成NO 2并防止N 2的形成, /子> 0 <子> 5 。 含有NO 2的烟道气被吸收到湿式洗涤器的酸性介质中以形成亚硝酸。 洗涤器水相中的亚硝酸与选定的氨化合物混合以分解亚硝酸释放氮。 氮氧化物污染物在臭氧消耗和与其相关的运行成本最小化的过程中从烟道气流中除去,并且消除了处理从洗涤器净化流中回收的硝酸盐的要求。