Spouted bed drier

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Abstract
The first commercial spouted bed driers have been installed in Canada and one has been used to dry three types of peas, lentils and flax. The data obtained from this drier have been compared and correlated with previous drying studies in various laboratory spouted bed driers. An empirical relationship between solids temperature and other variables has been obtained: where TK and TA are respectively the particle and inlet air temperature, dgm the particle diameter, Do the column diameter, F the feed rate and Mf the feed moisture content.High drying capacity was achieved through the use of high air temperatures with the result that a two foot diameter spouted bed heater (plus cooler) dried almost two tons per hour of peas through 8.8% moisture range. No damage was evident in materials dried.

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