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2. 发明授权

US5425916A Apparatus for the detection and control of aromatic compounds in combustion effluent 失效
标题翻译：用于检测和控制燃烧流出物中芳香族化合物的装置
公开(公告)号：US5425916A
公开(公告)日：1995-06-20
申请号：US164430
申请日：1993-12-08
申请人： Janos M. Beer , Arslan Kahn , Adel F. Sarofim , Jan H. Thijssen , Majed A. Toqan
发明人： Janos M. Beer , Arslan Kahn , Adel F. Sarofim , Jan H. Thijssen , Majed A. Toqan
IPC分类号： G01J3/443 , G01N21/64 , G01N21/01
CPC分类号： G01N21/6402 , F23G2207/107 , Y10T436/12 , Y10T436/19 , Y10T436/212
摘要： An apparatus for detecting the presence of polycyclic aromatic hydrocarbons in the effluent of a turbulent commercial combustion system for monitoring or controlling the composition of the effluent. The apparatus is a system for directyl selectively detecting the presence in the effluent high molecular weight polycyclic aromatic compounds having five or more rings by laser induced fluorescence. The system includes an illuminating source of select fluorescence excitation of wavelengths that induces substantial fluorescence by high molecular weight polycyclic aromatic hydrocarbons in the gas phase. Sampling structure is constructed to provide optical access to the effluent stream to sample the effluent stream at a select position where high molecular weight polycyclic aromatic compounds having five or more rings may be present in sufficient amounts that the fluorescence from the effluent at the select position at the excitation wavelength is predominantly from high molecular weight polycyclic aromatic compounds having five or more rings, when the high molecular weight polycyclic aromatic compounds are present in sufficient amounts. A detector detects the fluorescent signal from the illuminated effluent and an analyzer analyzes the signal to directly selectively determine the presence of the high molecular weight polycyclic aromatic hydrocarbons having five or more rings in the effluent.
摘要翻译：一种用于检测湍流商业燃烧系统的流出物中多环芳烃的存在的装置，用于监测或控制流出物的组成。该装置是通过激光诱导的荧光来选择性地检测具有五个或更多个环的流出物高分子量多环芳族化合物中存在的装置。该系统包括在气相中通过高分子量多环芳烃诱导基本荧光的波长的选择荧光激发的照明源。采样结构被构造成提供对流出物流的光学访问以在选择位置对流出物流进行采样，其中具有五个或更多个环的高分子量多环芳族化合物可以以足够的量存在，以使来自选择位置处的流出物的荧光当高分子量多环芳族化合物以足够的量存在时，激发波长主要来自具有五个或更多个环的高分子量多环芳族化合物。检测器检测来自被照射流出物的荧光信号，并且分析仪分析信号以直接选择性地确定在流出物中具有五个或更多个环的高分子量多环芳烃的存在。

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