| 摘要 |
<p>PURPOSE:To efficiently recover methyl bromide in a waste gas contg. a minute amt. of methyl bromide used in fumigation and to easily desorb the methyl bromide. CONSTITUTION:A methyl bromide-contg. waste gas from a fumigated warehouse 10 is brought into contact with an aq. beta-cyclodextrin-soln. in an absorption tower 11 to clathrate and absorb the methyl bromide in the waste gas. The clathrated methyl bromide is desorbed from the soln. in a regeneration tank 12, and then the desorbed methyl bromide gas is burned and decomposed in a furnace 13. Consequently, the aq. soln. having clathrated and absorbed methyl bromide is easily regenerated by heating or ultrasonic irradiation and repeatedly recylced, and the discharge of methyl bromide into the atmosphere is almost completely prevented.</p> |
