| 摘要 |
<p>PURPOSE:To economically and effectively obtain exhaust gas of higher concentration of gaseous hydrogen chloride than introduced gas by introducing gas contg. gaseous hydrogen chloride into an adsober to adsorb hydrogen chloride and making the gas at lower pressure than that when it is introduced to desorb the adsorbed gaseous hydrogen chloride. CONSTITUTION:Gaseous starting material contg. hydrogen chloride is increased in pressure to the prescribed one by a gas compressor 2 through a pipe 1 and delivered to the 1st adsorber 4a of three adsorbers 4a, 4b, 4c through a switching valve 3. In the adsorber 4a which has adsorbed the prescribed quantity of hydrogen chloride and is just before the saturated state, the gaseous starting material is stopped by switching the switching valve 3, and simultaneously, the adsorber is evacuated by a vacuum pump 10 by switching the switching valve 3 to be in a state of reduced pressure to desorb the hydrogen chloride absorbed on an adsorbent is while the adsorbent is regenerated. In the regeneration process, high concentration hydrogen chloride gas as a product is obtained from a discharge opening of the vacuum pump 10 and delivered to the downstream consumption process.</p> |
