陶瓷纤维催化滤管再生探索与失活原因分析  

Regeneration and deactivation analysis of catalytical ceramic fiber filter

作　　者：黄丽明 杨广华 Huang Liming;Yang Guanghua(Fujian Longking Co.,Ltd.,Longyan 364000,Fujian,China)

机构地区：[1]福建龙净环保股份有限公司,福建龙岩364000

出　　处：《工业催化》2024年第8期46-52,共7页Industrial Catalysis

摘　　要：为了考察陶瓷纤维催化滤管失活原因并进行再生效果探索,分别采用乙二胺四甲叉磷酸钠(EDTMPS)、羟基乙叉二膦酸(HEDP)和氨基三亚甲基膦酸(ATMP)配置的清洗剂清洗失活的陶瓷纤维催化滤管,并对新鲜样、失活样和各清洗后的样品进行脱硝性能、显气孔率、XRF、XRD、BET和SEM等测试分析。结果表明,清洗后的样品在(250~400)℃时脱硝性能得到明显恢复,清洗后降低了失活催化滤管中的K、Na和Ca元素含量,清除了大部分表面覆盖和浸入纤维毛细孔道内的粉尘,减弱了板结现象,纤维上催化剂形貌得到恢复,但深层的覆盖和堵塞现象恢复程度不是很理想,其中HEDP配置的清洗剂效果最佳。若要进一步提升催化滤管的脱硝性能,需要补充催化剂。In order to investigate the reason of deactivation of ceramic filter and explore the regeneration effect,the deactivated ceramic fiber catalytic filter was cleaned with the cleaning agent configured with ethylenediamine tetramethylene phosphate(EDTMPS),hydroxyethylidene diphosphonic acid(HEDP),and aminotrimethylene phosphonic acid(ATMP),respectively.The denitrification activity,apparent porosity,XRF,XRD,BET,and SEM of fresh,deactivated and cleaned samples were tested and analyzed.The results showed that the denitration activity of the cleaned sample is obviously restored at(250-400)℃,the contents of K,Na and Ca in the deactivated catalytic filter tube were reduced after cleaning,most of the dust covered the surface and immersed in the fiber capillary channel were removed,and the phenomenon of agglomeration or agglomeration was weakened,the morphology of the catalyst on the fiber has been restored.However,the recovery degree of deep coverage and blockage is not ideal.The cleaning agent configured with HEDP has the best effect.To further improve the denitrification performance of the catalytic filter tube,it is necessary to supplement the catalyst.

关 键 词：催化剂工程 陶瓷纤维催化滤管 再生 清洗剂 脱硝性能 

分 类 号：TQ426.6[化学工程] O643.362[理学—物理化学]