Introduction of Next Flemion
Membrane Fx-9010 (Fx-634)
July 2017
Contents
1. Features of Next Membrane
2. Performance Data
3. Key Technology for Next Membrane
1
Contents
1. Features of Next Membrane
2. Performance Data
3. Key Technology for Next Membrane
2
Features of Next Membrane : Fx-9010
1. Lowest voltage
・50 mV lower voltage than F-8080 and F-8080A
・Optimized reinforcing cloth
2. Higher CE in both hydrated and dehydrated state
・Suitable for zero gap and finite gap
・Suitable for electrolyzer which has low inner circulation of brine
3. Higher durability against Impurities
4. More robust
3
The Lowest Voltage
Voltage Reduction
Unit : mV
at 6 kA/m2
+60
Note;
・Prototypes;-30～-50mV
・Latest type after optimizing
manufacturing process;-50mV
F-8020
+30
F-8020SP
0
F-8080
F-8080A
Next Generation
-30
Fx-9010
-60
BM2.7v5 (AGC Commercial Plant)
BM2.7v6 (AGC Commercial size Pilot)
-90
0
100
200
300
400
500
600
700
800
-50 mV
900
1000
D.O.L
4
Prototypes of next generation membrane have kept stable low
voltage in an AGC commercial electrolyzer for more than 2 years.
Initial Change of Voltage
1.5dm2Cell, 6kA/m2, 32wt% NaOH, 90℃, 200g/l NaCl
3.140
3.130
F-8080
3.120
3.110
CV
3.100
3.090
3.080
Fx-9010
3.070
3.060
3.050
3.040
0
5
10
Fx-634BS(T-17-3)
Fx-634BS(T-17-3)
15
DOL
Fx-634BS(T-17-3)
F-8080(Tr-16-47-2)
F-8080(#1136)
F-8080(#1270)
20
F-8080(Tr-16-47-1)
Cell Voltage of Fx-9010 gradually falls for 10 days.
5
25
Higher CE in Wider Temperature Range
6 kA/m2, 32 wt% NaOH, 200 g/l NaCl
9898
New
Generation
Fx-9010
97
97
C.E.
CE (%)
(%)
F-8080A
96
F-8080
F-8080
F-8080A
96
95
9495
65
65
70
75
80
85
90
95
75
85
Catholyteoutlet
outlettemperature
temperature ((deg-C)
oC)
Catholyte
100
105
105
Fx-9010 shows higher CE not only at high temperature
but also at low temperature.
6
Higher CE in Weak Brine
6 kA/m2, 90 oC, 32 wt% NaOH
98
CE (%)
97
Fx-9010
96
F-8080A
F-8080
95
100
150
200
NaCl (g/l)
Fx-9010 shows higher CE in weak brine. It is suitable for
electrolyzers which have low inner circulation of brine.
250
Higher CE in Wider Range of Caustic Strength
6 kA/m2, 90 oC, 200 g/l NaCl
98
Fx-9010
CE (%)
97
96
F-8080A
95
F-8080
94
25
30
35
NaOH (wt%)
40
Fx-9010 shows higher CE in weak and strong caustic.
8
Durability against I/Ba
6 kA/m2, 80 oC, 32wt% NaOH,
1
I/Ba=20/1 ppm
Fx-9010
0
⊿CE(%)
-1
-2
F-8080
-3
-4
-5
-6
0
5
10
DOL after addition
15
Fx-9010 has higher stability of CE against I/Ba.
9
Durability against I/Sr
8 kA/m2, 90 oC, 32wt% NaOH, I/Sr=20/1
ppm
100
⊿CV(mV)
80
F-8080
60
40
Fx-9010
20
0
0
5
10
15
DOL after addition
20
25
Fx-9010 has higher stability of CV against I/Sr.
10
Durability against Mg
8 kA/m2, 90 oC, 32wt% NaOH, Mg=0.1
ppm
⊿CV(mV)
80
F-8080
60
40
Fx-9010
20
0
-20
0
5
10
15
DOL after addition
20
Fx-9010 has higher stability of CV against Mg.
11
More Robust
Frequent Load Tensile Test
Ratio to F-8080
Total number of frequent load tensile tests until membrane failure
(Sum of the value in various directions. Load : 60 % of tensile strength)
F-8080
F-8080A
Fx-9010
Fx-XXX
F-8080HD
Fx-9010 is more robust than F-8080 and F-8080A.
12
初期性能比較
AGC Internal Use Only
1.5dm2Cell, 6kA/m2, 32wt% NaOH, 90℃, 200g/l NaCl
3.20
CV(V)
3.15
F-8080
(Average)
3.10
F-8080A
（Average)
3.05
Fx-9010
（Average)
3.00
96.0
13
96.2
96.4
96.6
96.8
97.0 97.2
CE(%)
97.4
97.6
97.8
98.0
Contents
1. Features of Next Membrane
2. Performance Data
3. Key Technology for Next Membrane
14
Fx-9010 Evaluation in Customer Laboratory Cell
Zerogap, 6-8 kA/m2, 87℃ NaOH:32%, NaCl:180g/l
15
Membrane
Cell Voltage
F-8080
0
Fx-9010
-60mV
voltage : at 32%NaOH ,90℃
Fx-9010 Evaluation in Customer Laboratory Cell
Good Efficiency at Current Density 6-8 kA/m2
16
Contents
1. Features of Next Membrane
2. Performance Data
3. Key Technology for Next Membrane
17
Key Technology for Next Membrane
18
Advantages
Key Technologies
Voltage Reduction
Optimized Reinforcing cloth
Higher CE
in Wider Range
Fine Ion Channel
Higher Durability
against Impurities
Uniform Ion Channel
Basic Structure of Flemion
Sulfonic Layer
(High Conductivity)
Carboxylic Layer
(High Selectivity)
Reinforcing Cloth
Surface Coating
(Mechanical Strength)
(Gas Release)
19
Standard Reinforcing Cloth
Cross section
Plane Figure
Permanent Fiber
(PTFE fiber)
Sacrificial Fiber
(PET fiber)
Note;
・F-8080 and F-8080A have standard reinforcing cloth
・PET fiber dissolves under the electrolysis
Standard cloth is plain-woven fabric which is composed of
PTFE fiber and PET fiber.
20
Influence of Cloth on cell voltage
PTFE Fiber
“Shadow”
Na+
PTFE fiber interferes with the Na+ migration which
causes the increase of the cell voltage.
21
How to reduce the shadow area (1)
Conventional cloth
Optimized cloth
Flat type
Circle type
Note; There is no difference of fiber fineness between flat type and circle type
The shape of PTFE fiber changes into circle type,
which reduces shadow area.
22
How to reduce the shadow area (2)
Sacrificial Fiber Hole
(filled with solution)
PET fiber dissolves under the electrolysis and makes
sacrificial fiber holes, which reduces the shadow area.
23
How to reduce the shadow area (2)
Conventional cloth
F-8080/F-8080A
Optimized cloth
Fx-9010
The optimized cloth has 4 PET fibers between PTFE fibers,
which reduces the shadow area more.
24
Optimized Reinforcing cloth
Conventional Cloth
Optimized Cloth
Fx-9010
F-8080/F-8080A
PTFE Fiber
PET Fiber
Optimized reinforcing cloth reduces the shadow area more and
makes Fx-9010 show lower voltage.
Note; Optimized cloth is a part of voltage reduction technologies.
25
Next Generation Membrane : Fx-9010
1. Lowest voltage
・50 mV lower voltage than F-8080 and F-8080A
・Optimized reinforcing cloth
2. Higher CE in both hydrated and dehydrated state
・Suitable for zero gap and finite gap
・Suitable for electrolyzer which has low inner circulation of brine
3. Higher durability against Impurities
4. More robust
26