▎ 摘　　要

NOVELTY - The utility model claims a front dry filter device of RCO active carbon adsorption and concentration catalytic combustion device, comprising a filter box, the front end of the filter box is provided with an air inlet, the rear end of the filter box is provided with an air outlet, the inner part of the filter box along the gas inlet direction is orderly provided with a front metal filter screen, graphene filter module; and an active carbon filter screen or a glass fibre filter screen; the graphene filter module is composed of several graphene filters in a matrix manner; each graphene filter comprises a filter frame and a continuous V-shaped folded graphene filter paper; the graphene filter paper is connected with the filter frame. The front metal filter screen of the utility model, graphene filter module, and active carbon filter screen or glass fibre filter screen are capable of filtering the waste gas, realizing three-stage purification treatment, purifying and filtering effect is good, and the efficiency is high.