CAJ | 학술논문

为了延长火电厂脱硝催化剂的使用寿命，介绍了脱硝催化剂使用及寿命管理现状，结合催化剂使用全过程论述了投运前、运行中及后续维护过程中催化剂的寿命管理方法，总结了催化剂中毒原因并提出寿命管理建议。催化剂选择设计时应充分考虑催化剂厂家提供的催化剂实际运行参数，最大限度满足催化剂运行工况；催化剂运行、检修、维护过程中，要严格控制喷氨量、运行温度、吹灰系统，避免为了提高脱硝效率而增加氨逃逸，引起空气预热器堵塞等问题。堵塞、中毒、机械磨损、烧结是造成催化剂失活的主要原因，通过检测脱硝催化剂的效率、氨逃逸和SO2/SO3转化率等指标，判断催化剂是否失活，并定期进行催化剂单体的检测和脱硝系统性能测试。最后提出应加强废旧催化剂的回收处理技术，如催化剂的二次再生技术以及从废旧催化剂中提取微量元素、回收有效成分等。
위료연장화전엄탈초최화제적사용수명，개소료탈초최화제사용급수명관리현상，결합최화제사용전과정논술료투운전、운행중급후속유호과정중최화제적수명관리방법，총결료최화제중독원인병제출수명관리건의。최화제선택설계시응충분고필최화제엄가제공적최화제실제운행삼수，최대한도만족최화제운행공황；최화제운행、검수、유호과정중，요엄격공제분안량、운행온도、취회계통，피면위료제고탈초효솔이증가안도일，인기공기예열기도새등문제。도새、중독、궤계마손、소결시조성최화제실활적주요원인，통과검측탈초최화제적효솔、안도일화SO2/SO3전화솔등지표，판단최화제시부실활，병정기진행최화제단체적검측화탈초계통성능측시。최후제출응가강폐구최화제적회수처리기술，여최화제적이차재생기술이급종폐구최화제중제취미량원소、회수유효성분등。
In order to lengthen service life of denitration catalyst in thermal power plant,the use and life management state of deniration catalyst was introduced combining with the whole catalyst use process. The cause of catalyst poisoning was analyzed. In order to maximize catalyst effects,the choose of catalyst should take full account of actual operating parameters which were provided by manufacturer. The ammonia could clog air preheater,so the spraying value of ammonia,operating temperature,soot blower system should be controlled strict-ly. The clogging,poisoning,physical deterioration and sintering were the main reasons of catalyst deactivation. The catalyst efficiency,am-monia escape and SO2/SO3 conversion ratio could be used to check if the catalyst still had activity. There were some useful component in waste catalyst,so the waste catalyst recycling and regeneration technologies development should be strengthened.