Abstract: An apparatus for preventing the emission of dioxins in an incineration facility including an incinerator having a boiler, and an exhaust gas treatment facility for treating exhaust gas discharged from a flue of the boiler. This apparatus further includes a steam supply pipe for supplying steam into a water tube or a downcomer of the boiler from an auxiliary boiler or another steam-generating source, a flue damper for opening and closing the flue of the boiler, a detector for detecting the temperature of gas within the boiler at a point disposed upstream of the flue damper, and a damper control device responsive to a temperature, detected by the detector, for opening and closing the flue damper.

Abstract: A pressure vessel includes a cylindrical, fixed body which is closed at the two ends thereof, the central portion of the body forming a sample accommodating space, and a drum body provided in such a manner as to be rotatable relative to the outer periphery of the body. The body has an opening in a lateral portion thereof, and the drum body 3 has an opening at a position which faces the opening formed in the body at one rotated position.