EXHAUST GAS CLEANING METHOD CONTAINING WATER-SOLUBLE VOLATILE HYDROCARBON OF LARGE AMOUNT AND HIGH HUMIDITY

摘要

PROBLEM TO BE SOLVED: To provide a treating method of a large amount of exhaust gas exceeding 10,000 m3/h of high humidity of 50% or more of R.H., and containing lean water-soluble VOC of several hundred to several thousand ppm in the exhaust gas.

SOLUTION: In an exhaust gas treating method, an adsorbing apparatus is used for treating the exhaust gas containing lean water-soluble hydrocarbon and a large amount of moisture. The adsorbing apparatus consists of a layer packed with zeolite-made honeycomb or zeolum-made honeycomb as an adsorbent, so-called a molecular sieve adsorbent, wherein a pre-stage alternately performing adsorption and desorption, is packed with a honeycomb layer formed of zeolite or zeolum having a pore diameter of about 3 Å and/or a honeycomb layer consisting of hydrophobic silica gel, and a rear stage is packed with particulate meso-hole activated carbon and/or hydrophobic silica gel, with the upper and lower stages communicated with each other.

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