| 摘要 |
PURPOSE:To make a heat exchanger needless by mixing a part of a purified gas discharged from an adsorption zone in a rotary activiated carbon vessel with a part of a high-temp. purified gas after oxidation discharged from an oxidation catalyst bed to obtain a high-temp. gas for desorbing at a specified temp. CONSTITUTION:The odorous gas is introduced into an adsorption zone 5a in a rotary activated carbon vessel 5 through a blower 1, filters 2 and 3, and a granular activated carbon vessel 4, and odorous substances are removed to obtain a purified gas. A part of the purified gas, after passing through a damper 7, is mixed with a hugh-temp. purified gas from a damper 16 whose odorous substances are oxidized in an oxidation catalyst bed 13, to obtain a high-temp. purified gas at about 100-120 deg.C, which is introduced into a desorbing zone 5b in the rotary activated carbon vessel 5 wherein the odorous substances adsorbed by activated carbon are desorbed. The desorbed gas is passed through a blower 10, a heat exchanger 11, and a heater 12, and the temp. is elevated. The odorous components are oxidized in an oxidation catalyst vessel 13 to obtain the high- temp. purified gas. The high-temp. purified gas is passed through the heat exchanger 11, and a part of the gas is mixed with the purified gas discharged from the adsorption zone 5a. |
