Transcript Effect of Imbibition on Extraction and Steam Balance

EFFECT OF IMBIBITION
ON EXTRACTION AND
STEAM BALANCE
HAROLD S. BIRKETT
2004 AVERAGE LOSSES
UNDETERMINED 2.4 LB 96/TC
$0.4 M
FILTERCAKE
5.4 LB 96/TC
$0.8 M
BAGASSE
19.8 LB 96/TC
$3.1 M
FINAL MOL
17.1 LB 96/TC
$2.7 M
784,947 TC, $.20/LB
EXTRACTION .
EXTRACTION AS FUNCTION OF IMBIBITION
LOUISIANA DATA
100
98
96
94
92
90
88
86
84
82
80
78
0
10
20
30
40
50
60
IMBIBITION % CANE
4 MILLS
5 MILLS
6 MILLS
7 MILLS
BASED ON: FIBER = 13.5, AVG LA CONDITIONS, DATA RANGE 10-30 % IMB, THEN EXTRAPOLATED
70
100
98
80
96
60
94
40
92
20
90
0
88
6
8
10
12
14
16
18
20
22
24
26
NUMBER OF ROLLERS
LOST UND. JUICE % FIBER
HUGOT
POL EXT AT 13.5% FIBER
POL EXT AT 13.5% FIBER .
LOST UND. JUICE % FIBER .
LOST UNDILUTED JUICE % FIBER AS
FUNCTION OF LENGTH OF TANDEM
EXTRACTION % .
EXTRACTION AS FUNCTION OF
IMBIBITION % CANE
97
96
95
94
93
92
91
90
89
88
87
0
5
10
15
20
25
IMBIBITION % CANE
EXTRACTION %
HUGOT, FIBER =15
30
35
40
100
98
80
96
60
94
40
92
20
90
0
88
300
0
50
100
150
200
250
IMBIBITION % FIBER
IMB (11 ROLLS)
EXT (11)
IMB (14 ROLLS)
EXT (14)
IMB (17 ROLLS)
EXT (17)
POL EXT AT 13.5% FIBER .
LOST UND. JUICE % FIBER .
LOST UNDILUTED JUICE % FIBER AS
FUNCTION OF IMBIBITION % FIBER
EXTRACTION VS IMBIBITION SCHEME
90.0
81.8
86.7
88.3
87.7
LB EXHAUST/TON CANE .
EXHAUST REQUIRED
LB/TON CANE
1600
1400
1200
1000
800
600
0
20
40
IMBIBITION % CANE
TRIPLE
TRIPLE - V1 TO P & H
QUAD
QUAD - V1 TO P & H
EXT=92, FIBER=13.5, POL=12.25, MJ PUR=85; +1 EXT = +4-5 LB STEAM/TON CANE
60