| 摘要 |
PURPOSE:Not to take a wrong value of measurement by condensing and depositing impurities and to obtain an accurate result of the measurement, by heating a thermal decomposition furnace, collecting tube of mercury, measuring instrument of flow rate and gas flow passage joining these equipments by a heating apparatus. CONSTITUTION:Collecting apparatus of mercury is composed of a fire flue 1 of exhaust smoke of an incinerator, a tube for sampling 2, its heating apparatus 3, a collecting tube of mercury 7 and a heating thermal insulation box 11. After removing an interferring substance in exhaust gas of the flue 1 by the tube 2 heated by the apparatus 3 in a removing furnace 4, mercury is caught by the tube 7 and then, remaining exhaust gas is taken out of system by a pump 8. Further, the tube 7 collected mercury is taken out from the box 11 and is measured. On this occasion, impurities are condensed and depositied becaused of heating all collecting system of mercury and an accurate measurement is performed. |
