Wednesday, February 25, 2015

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