Denitration catalyst abrasionproof decreases device

The utility model discloses a denitration catalyst abrasionproof decreases device, which comprises an outer shell, the inside of shell is equipped with the catalysis runner, the top of shell is equipped with detains the cover, following platform links to each other with the higher authority platform through the screw rod, the inside in direct hole is equipped with silicon carbide tube, silicon carbide tube's bottom is equipped with the extension. This denitration catalyst abrasionproof decreases device, through the higher authority platform, the cooperation of following platform and extension,owing to use single silicon carbide tube, the cost of manufacture has been reduced, the use screw rod runs through the shell and detains the following platform and upper platform that covers the outside, make to detain to cover and be fixed in on the shell completely, it removes to take place the position when having avoided it to use, detain cover installation back extension and insert the adaptation inslot on catalysis