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Residence Time Distribution and Kinetics of Insolubility of Skim Milk Powder During Spray Drying

SSRN Electronic Journal
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Metric Options:   Counts1 Year3 Year

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  • Usage
    320
    • Abstract Views
      278
    • Downloads
      42

Article Description

The Residence Time Distribution (RTD) is an important tool to obtain an industrially efficient spray drying system. This study determined the RTD of a spray dryer (NIRO Mobile Minor) at different operating conditions. Two different feed line systems (long and short) were used to observe the influence on drying tower RTD. The mean residence time without hammering and hammering conditions are 17 seconds and 23 to 27 seconds, respectively. The insolubility of skim milk powder increases with the increase of drying temperature and mean deposition time. The formation of insoluble material follows the first-order kinetics and is well described by the Arrhenius-type relationship. Quantitative wall deposition during drying was found from 63 to 75% of the feed dry matter. This study helps to find optimum operating conditions for manufacturing the best quality skim milk powder (SMP) with a NIRO Mobile Minor.

Bibliographic Details

Md. Wadud Ahmed; Frank Schulnies; Thomas Kleinschmidt

Elsevier BV

Residence time distribution; Skim milk powder; Insolubility; Wall deposition; Spray drying

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