During use, oily viscous substances shall be prohibited from entering Activated carbon To avoid blocking Honeycomb activated carbon The pores of the honeycomb activated carbon or the expansion surface covered with the honeycomb activated carbon make the gas unable to contact the expansion surface of the honeycomb activated carbon, reducing the use effect. If the gas contains such substances, it should be purified before entering the honeycomb activated carbon box to achieve good application effect.

Water resistant honeycomb activated carbon, as long as it is used to filter waste gas without water, if the gas contains water or directly contacts with water, the water resistant honeycomb activated carbon will deform, which is a product fault and cannot be used; Water resistant honeycomb activated carbon belongs to porous adsorption material, and foaming shall be prevented during transportation, storage and use. After water immersion, water fills the active pores to reduce the direct contact between the specific surface of activated carbon and gas, which will affect the use effect.