BENCH SCALE METHOD AND DEVICE FOR OBTAINING PERFORMANCE PARAMETER OF THERMALLY DETACHING AND ATTACHING PROCESS

摘要

PURPOSE: To provide a bench scale process and a device for determining the operating parameters, for instance, maximum temperature and residence time required to remove a particular contaminant existing at a specific depth during a full-scale thermal desorption process. CONSTITUTION: A temperature of a representative contaminated soil sample at a particular depth as a function of residence time is measured during the bench scale thermal desorption process in determining method of the operating parameters. An operating parameter determining device has a container 80 for housing the soil sample 78, at least one partition 84 disposed between adjacent layers of the soil sample and at least one thermocouple 86 provided within each layer of the soil sample. When the operating parameters are determined, the heat flux, absorptivity, thermal diffusivity and thermal conductivity are determined during the bench scale thermal desorption process and the operating parameters of the full scale thermal desorption process are predicted by utilizing these.