论文部分内容阅读
基于催化剂在线增活工艺,以火电厂运行条件下的典型钒钛类失活催化剂为原料,采用单因素变量法展开了钒基活化液各成分对失活催化剂增活效果的研究,对活化液增活后的催化剂进行活性评价及SEM、BET、FT-IR和XRD等分析,考察增活前后NO转换率、催化剂表面形貌及结构的变化情况。研究结果表明,在实验条件下,随着4种活性成分含量的增加,催化剂增活后NO转换率均呈现先升高后降低的规律,NO转换率最高达99%,且增活后催化剂表面活性成分增加,Brnsted酸性位增多,比表面积增加,对烟气具有较强适应力。
Based on the on-line catalyst activation process and the typical vanadium-titanium deactivated catalyst under the operating conditions of thermal power plant as raw materials, the effects of various components of the vanadium-based activation solution on the activation of the deactivated catalyst were investigated by the single-variable method. The catalysts were evaluated for their activity, SEM, BET, FT-IR and XRD. The NO conversion rate, surface morphology and structure of the catalyst before and after activation were investigated. The results show that under the experimental conditions, with the increase of the content of the four active components, the NO conversion rate of the catalyst increases first and then decreases after the catalyst is activated, the NO conversion rate is up to 99%, and after the activated catalyst surface Increasing the active ingredient, Brnsted acidic position increased, the specific surface area increased, the flue gas has strong adaptability.