CAJ | 학술논문

对烟气脱硝后的氨逃逸进行准确、灵敏、快速监测，避免氨气对环境的二次污染是工业和环保领域的工作重点之一。选择氨气1.53μm的单根吸收谱线为目标谱线，结合可调谐半导体激光吸收光谱技术( TDLAS )和波长快速扫描技术研究了高温烟气氨逃逸原位监测方法，并设计了相应的开放光路测量系统。分析了高温环境下温度对测量的影响，研究了温度修正方法，并设计了烟道现场氨浓度免定标精确反演算法，由实验得出最大相对检测误差为1.5%。通过工业现场的安装运行验证了文中系统的工程实用性和算法的可靠性，对于我国工业脱硝过程的监控和烟气安全排放起有效的技术支持。
대연기탈초후적안도일진행준학、령민、쾌속감측，피면안기대배경적이차오염시공업화배보영역적공작중점지일。선택안기1.53μm적단근흡수보선위목표보선，결합가조해반도체격광흡수광보기술( TDLAS )화파장쾌속소묘기술연구료고온연기안도일원위감측방법，병설계료상응적개방광로측량계통。분석료고온배경하온도대측량적영향，연구료온도수정방법，병설계료연도현장안농도면정표정학반연산법，유실험득출최대상대검측오차위1.5%。통과공업현장적안장운행험증료문중계통적공정실용성화산법적가고성，대우아국공업탈초과정적감공화연기안전배방기유효적기술지지。
Accurately, sensitively and rapidly monitoring of ammonia slip after the flue gas denitration to avoid ammonia secondary pollution of the environment is one of the focuses in industrial and environmental fields. This research chose the absorption line of ammonia molecules near 1.53μm as the goal line, studied the ammonia slip in situ monitoring method of high temperature flue gas through TDLAS technology and wavelength fast scanning technology, and designed the corresponding open-path measurement system. This research analyzed the temperature influence on measurement in the high temperature environment, studied the temperature correction method, designed an ammonia concentration accurate inversion algorithm which avoided calibration in flue-site and obtained the maximum relative detection error which is 1.5% by laboratory experiments. The engineering practicability and reliability of the algorithm of the system is proved by industrial field installation and operation. It will provide the effective technical support in industrial denitration process monitoring and the flue gas emissions in safety in our country.