燃煤锅炉烟气SCR脱硝催化剂再生工程实践

Regeneration Practice of Catalyst in SCR Denitration of Boiler Flue Gas

针对锅炉烟气SCR脱硝中催化剂的损耗,提出并实施了催化剂再生的小试和中试。对失活的催化剂进行检测,研究了催化剂失活的原因;介绍了失活催化剂再生方案及再生前后催化剂的活性指标;详细介绍了催化剂再生的中试及工程应用。结果表明:失活催化剂的再生实践是成功的,失活催化剂的活性能有效地恢复;脱硝效率有所提高。

Aiming at the loss of catalyst in the SCR denitration of boiler flue gas, small and pilot-scale tests on catalyst regeneration were performed, during which inactivated catalyst was tested to study the reason of the inactivation. An introduction is being presented to both the regeneration scheme for inactivated catalyst and the activity indexes of catalyst before and after regeneration, together with a detail description to the pilot-scale test and engineering application of catalyst regeneration. Results show that the regeneration practice is successful and the activity of inactivated catalyst can be recovered effectively after regeneration. Moreover, the denitration efficiency has been improved to some extent.