Agroindustrial project analysi

Pneumatic Batch or continuous $120,000 for 90 Low labor costs but This dryer is used for materials thatconveyor operation for large- tons, $136,000 skilled personnel re- can be carried by high-velocity airscale drying of powder for 120 tons, quired for maintenance (such as flour, grains, powder); beorgranules with low $164,000 for 200 and operation; $0.004 cause drying time is short, loss ofmoisture content; best tons, $220,000 for per pound raw ma- nutrients is negligible and little adforoperations requir- 480 tons dailyd terial, $0.0133 per verse organoleptic change takes placeing conveyance andpound water removedclassification duringdryingRotary Batch or continuous $122,000 for 16 Low labor costs but Similar to, but requiring less flooroperation for medium- tons, $182,000 skilled personnel re- space than, pneumatic conveyorto large-scale drying of for 28 tons, quired for maintenancesolids that are rela- $264,000 for 48 and operation; $0.005-tively free-flowing and tons, $363,000 .007 per pound rawCh granular (such as for 75 tons dailyd material, $0.0166-grains).0233 per pound waterremovedSpray Continuous operation $330,000 for 11 Low labor costs but Spray drying can produce productsfor medium- to large- tons, $495,000 skilled personnel re- comparable in organoleptic quality andscale drying of fluids, for 32 tons, quired for maintenance nutrient retention with those producedslurries, and pastes; $644,000 for 64 and operation; $0.005- by freeze drying; in United States andbest for drying one tons, $825,000 .019 per pound raw other developed countries, most driedproduct in large vol- for 144 tons material, $0.007-.0253 milk solids and whole egg solids areumes dailye per pound water re- produced by spray drying (milk andmoved egg must be pasteurized before spraydryingto kill pathogenic microorganisms)(Table continues on the following page.)