MILL DESIGN - PRESS STATION

Key points to consider for design of press station ;

 SCREW PRESS

• sterilised fruit bulk density - 650 kg/m3
• digester retention time - 15 minute
• digester safety factor - 1.2

DIGESTER

• digester height, H = 2.5 x Diameter

 DIGESTER FEED CONVEYOR

• MPD to FFB ratio - 65%
• speed of conveyor - 50 rpm
• pitch of conveyor ribbon - 0.4 meter or 16 inches
• conveyor loading factor - 0.3
• average speed of travel of material - 1200 m/hr

 DIGESTER FEED CONVEYOR

• coefficient of friction - 0.4
• drive efficiency - 75%
• power safety factor - 1.2

Source - Masrawana Mohd. Masran's Collection