Proctor and Schwartz, Inc

Figure 9.2. Psychiometric chart for a wide temperature range, 32-600°F (Proctor and Schwartz, Inc., Horsham, PA).

Figure 9.6. Tray dryer arrangements, batch and continuous. Performance data are in Table 9.5. (a) Air flow across the surfaces of the trays, (b) Air circulation forced through the beds on the trays (Proctor and Schwartz Inc.), (c) Continuous drying of trays mounted on trucks that move through the tunnel air flow may be in parallel or countercurrent (P.W. Kilpatrick, E. Lowe, and W.B. Van Arsdel, Advances in Food Research, Academic, New York, 1955, Vol. VI, p. 342).

Figure 9.8. Rotary tray, through-circulation belt conveyor, and heated screw conveyor dryers, (a) Rotary tray dryer (Wyssmont Co.), (b) Action of a rotating tray and wiper assembly (Wyssmont Co.), (c) A single conveyor belt with air upflow in wet zone and downflow in dry (Proctor and Schwartz Inc.), (d) A two-stage straight-through belt conveyor dryer, (e) A three-belt conveyor dryer as the material becomes dryer, the loading becomes deeper and the belt longer (Proctor and Schwartz Inc.), (f) Screw conveyor dryer with heated hollow screw (Bepex Corp.).

Figure 9.14. Spray dryer arrangements and behavior, (a) Spray dryer equipped with spray wheel straight section L/D = 0.5-1.0 (Proctor and Schwartz Inc.), (b) Spray dryer equipped with spray nozzle straight section L/D = 4-5 (Nonhebel and Moss, 1971). (c) Spray dryer for very heat sensitive products flat bottom, side air ports and air sweeper to cool leaving particles, (d) Distribution of air temperatures in parallel and countercurrent flows (Masters, 1976, p. 18, Fig. 1.5). (e) Droplet-forming action of a spray wheel (Stork-Bowen Engineering Co.).

Wentz and Thygeson, 1979 tray dryer from Perry, Chemical Engineers Handbook, 4th ed., p. 20-7 conveyor and spray dryers from Proctor and Schwartz, Inc. rotary, flash, and fluid bed dryers from Williams-Gardner, 1971, pp. 75,149, 168, 193). (Walas, 1988). 

Each zone of interior Ml plant cost 358,000 and each theater of operations Ml plant approximately 79,000. A total of thirty-four Ml theater of operations plants was procured in 1942 and 1943 from the American Laundry Machinery Co, and Proctor and Schwartz, Inc., under the super-... 

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