Through analysis

the affecting factors on catalyst used for denitrification in flue gas with high dust content have been pointed out

they are mainly flow velocity of flue gas

hardness of fly ash

and yield strength of surface material on the catalyst etc.

confirming abrasion are occurred on the top and in the inner passage of catalyst.For this

some measures for preventing catalyst from abrasion

such as reinforcing the top of catalyst

heightening the yield strength of surface material

increasing the thickness of catalyst's wall

as well as selecting suitable sort of the catalyst etc..Through comparison

it is believed that the abrasiveness of plate type catalyst is the strongest in flue gas with high dust content.