How to protect catalyst in the flue gas condition with high tar content?

In order to protect the denitration catalyst under the condition of high tar content flue gas, it is essential to figure out the source of tar. Only make clear where the source is from first, then can we think about "how to protect it".

Taken together, the protective measure is to prevent tar from contacting the catalyst. For example, if tar comes from incomplete combustion, then it should be considered to improve the performance of the burner and improve the combustion efficiency.

The catalyst’s performance will be reduced once polluted by tar. In addition, if the accumulated tar reaches a certain degree, and the temperature of catalyst reaches the ignition point of tar, the catalyst will have a potential risk of being burnt. There have been similar cases in the history of SCR flue gas denitration equipment operation.

In principle, catalyst deactivation caused by tar pollution is a physical deactivation. Technically speaking, the activity of the catalyst can be restored and reused through proper regeneration treatment.