V-Ti基脱硝催化剂去除汞和PCDDs/PCDFs的研究现状

Research status of V-Ti-based denitrification catalysts for removal of Hg and PCDDs/PCDFs

将柔软纤维与折皱钢网复合制成波纹式支撑骨架,将V-Ti基脱硝催化剂负载到波纹式支撑骨架上制成整体波纹式脱硝催化剂。介绍V-Ti基波纹式整体脱硝催化剂的主要制备工艺、优点以及国内外对V-Ti基波纹式整体脱硝催化剂的研究现状;对V-Ti基脱硝催化剂与贵金属脱硝催化剂的制造成本以及PCDDs/PCDFs催化分解效果进行对比,两者具有相同的催化分解效果,V-Ti基脱硝催化剂成本低得多;活性组分、V质量分数以及活性温度不同,V-Ti基脱硝催化剂催化分解PCDDs/PCDFs的效果也不同,催化分解率最高可达97.7%;研究者得出V-Ti基脱硝催化剂催化氧化Hg0的不同效果,介绍V-Ti基脱硝催化剂催化氧化Hg0的研究现状。

The composite corrugated support frames were prepared by using the soft fibers and creasing steel mesh. The monolithic corrugated denitrification catalysts were prepared by loading V-Ti-based De-NOx catalysts onto corrugated support frames. The current major preparation processes,main advantages and research status of V-Ti-based corrugated denitrification catalysts at home and abroad were reviewed.Compared V-Ti-based denitrification catalysts with noble metal denitrification catalysts,both catalysts possessed the same catalytic decomposition effects of PCDDs / PCDFs,but the manufacturing cost of V-Ti-based denitrification catalysts was lower than those of noble metal denitrification catalysts. V-Ti-based denitrification catalysts with different active components,vanadium contents and reaction activity temperatures exhibited different catalytic decomposition effects of PCDDs / PCDFs. The highest catalytic decomposition rate was 97. 7%. The researchers obtained different catalytic effects of V-Ti-based denitrification catalysts for oxidation of Hg0. The research status of V-Ti-based denitrification catalyst for catalytic oxidation of Hg0 oxidation was introduced.