MILL DESIGN - DEPERICARPER STATION

Key points to consider for design of depericarper system ;

CAKE BREAKER CONVEYOR

• press cake ratio to FFB - 31%
• bulk density of press cake - 604 kg/m3 (19% fibre + 12% nut)
• rotation speed - 60 rpm
• tip speed - 2.1 m/s
• pitch of paddle / ribbon - 150 mm or 6 in
• loading factor - 1.3

DEPERICARPER SYSTEM

• fibre to FFB - 19%
• air to fibre ratio - 4 : 1
• air density at 27C - 1.1777 kg/m3
• conveyor velocity - 25 m/s
• separation velocity at 27C - 13 m/s

DESTONER SYSTEM

• nut to FFB ratio - 12%
• air to nut ratio - 5 : 1
• air density at 27C - 1.1777 kg/m3
• conveyor velocity - 24 m/s
• separation velocity at 27C - 16 m/s

Source - Masrawana Mohd. Masran's Collection