A Study of the Limitations to Spray Dryer Outlet Performance
| Autor: | Timothy A. G. Langrish, L. Ozmen |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
geography
food.ingredient geography.geographical_feature_category Moisture Waste management Chemistry General Chemical Engineering Spray dryer Pulp and paper industry Inlet Equilibrium moisture content Volumetric flow rate food Spray drying Skimmed milk Sorption isotherm Physical and Theoretical Chemistry |
| Zdroj: | Drying Technology. 21:895-917 |
| ISSN: | 1532-2300 0737-3937 |
| DOI: | 10.1081/drt-120021691 |
| Popis: | The concept of the product moisture locus was tested in this work using a pilot-scale modified Niro spray dryer (diameter 0.8 m, height 2 m), where the residence time of the particles inside this spray dryer is lower compared with larger industrial spray dryers. The moisture contents of skim milk powder produced from spray drying skim milk (solids content 8.8% w/v) at different operating conditions, namely different swirl vane angles (0°, 25°, 30°), inlet air temperatures (170°C, 200°C, 230°C) and process fluid flowrates (1.4 kg h−1, 1.6 kg h−1, 1.8 kg h−1), were compared with the predicted equilibrium moisture contents. In addition, the residence time of the particles was also increased in the spray dryer by decreasing the inlet air mass flowrate from 0.016 to 0.013 kg s−1. The outlet moisture contents of the skim milk powder for all the 23 runs carried out in this work were within 0.4% of the equilibrium values. Thus, the skim milk powder particles were in close equilibrium with the gas inside ... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
| Nepřihlášeným uživatelům se plný text nezobrazuje | K zobrazení výsledku je třeba se přihlásit. |