new flemion membranes for zero gap configuration · 2016-11-21 · 0,2 0,4 0,6 0,8 1 1,2 1,4 70 72...

New Flemion Membranes for Zero Gap Configuration

Clorosur Technical Seminar

& WCC Safety Workshop

1

Contents

Next Generation Membrane

F-8080A : New Type of F-8080 seriesfor Zero Gap

Influence of Zero Gap on the membrane

Configuration of Finite Gap and Zero Gap

2

Finite Gap Zero Gap

Elastic Cushion

Anode

Membrane

Cathode

Membrane

Fine Mesh Cathode

Anode

Woven MeshExpand Metal

Current Collector

Less Catholyte Flow at Membrane Surface

3

Finite Gap Zero Gap

Anode

Membrane

Cathode

Membrane

Anode

Expand Metal

Catholyte Flow Catholyte Flow

Less flow of catholyte at membrane surface removes less heat of

membrane, which makes membrane higher temperature than

catholyte outlet.

Elastic Cushion

Fine Mesh CathodeWoven Mesh

Current Collector

Less Flow caused

by the structure

4

95

96

97

98

65 70 75 80 85 90 95 100 105

CE

(%)

Catholyte outlet temperature (oC)

F-8080, 6 kA/m2, 32 wt% NaOH, 200 g/l NaCl

Higher Temperature in Zero Gap

Zero gap with fine mesh

cathode and elastic cushion

Finite gap

The temperature of the membrane in zero gap is

at least 5 oC higher than in finite gap.

Magnified View of Configuration

5

Zero Gap

Elastic Cushion

Woven Mesh

Fine Mesh Cathode

Finite Gap

Anode Membrane

CathodeExpand Metal

AnodeMembrane

Less H2 Gas Flow in Zero Gap Structure

6

Zero Gap

Elastic Cushion

Anode

Woven Mesh

Fine Mesh Cathode

Membrane

Finite Gap

Anode Membrane

CathodeExpand Metal

H2 gas Flow Less Flow

Less flow makes more H2 gas bubbles touch the membrane,

caused by zero gap structure.

H2 Gas

Higher H2 in Cl2 at Lower CD

7

0

0,2

0,4

0,6

0,8

1

1,2

1,4

70 72 74 76 78 80 82 84

H2/C

l 2o

n a

no

de

sid

e

(vo

l%)


Finite Gap

(0.8kA/m2)

Zero Gap

(0.7kA/m2)

Zero gap shows higher H2 in Cl2 than finite gap in same

electrolyzer, which indicates more H2 gas touches to cathode

side surface of the membrane.

H2/Cl2 on anode side at low CD in commercial size electrolyzer

8

Contents


F-8080A ; New Type of F-8080 seriesfor Zero Gap


9

95

96

97

98

65 70 75 80 85 90 95 100 105

CE

(%)


F-8080, 6 kA/m2, 32 wt% NaOH, 200 g/l NaCl

F-8080 : CE Decrease in Zero Gap

Zero gap with fine mesh

cathode and elastic cushion

Finite gap

F-8080 in zero gap shows 0.5-1% lower CE than in finite gap

at high temperature.

95

96

97

98

65 70 75 80 85 90 95 100 105

CE

(%)


10

F-8080A : Higher CE at High Temperature

F-8080

F-8080A shows more than 96 % CE even at 100 oC.

Finite gap (Lab cell)

F-8080A

6 kA/m2, 32 wt% NaOH, 200 g/l NaCl

95

96

97

98

65 70 75 80 85 90 95 100 105

CE

(%)


11

F-8080A : Higher CE in commercial size nx-BiTAC

F-8080A in commercial nx-BiTAC with zero gap shows

high enough CE at high temperature.

Zero gap (Commercial size nx-BiTAC)

F-8080in commercial size nx-BiTAC

F-8080Ain commercial size nx-BiTAC

6kA/m2, 32wt% NaOH, 200g/l NaCl

F-8080 in Lab

with finite gap

95

96

97

98

100 150 200 250

CE

(%)

NaCl (g/l)

12

F-8080A : Higher CE in Hydrated Condition

F-8080A shows higher CE in weak brine.

Lab cell, 6 kA/m2, 90 oC, 32 wt% NaOH

F-8080A

F-8080

Features of F-8080A

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1. Higher stability for zero gap

・Especially, higher CE at high temperature

2. Higher CE against hydrated state

3. Same voltage and durability as F-8080

・higher CE in weak brine

・Low voltage and high durability

・Fine adjustment of F-8080 which has proven reliability

14

Contents


F-8080A : New Type of F-8080 seriesfor Zero Gap


・Lowest Voltage

・Higher CE in Wider Range

・Higher Durability against I/Ba

Next Generation

Lowest Voltage

15

2000 2005 2015 2020

+60

+30

0

-30

-60

-90

Voltage R

eduction

Unit : mV

at 6 kA/m22010

F-8080A

F-8020SP

F-8020

F-8080

Fx-634

-50 mV

16

0 50 100 150 200 250 300 350 400 450 500

Prototypes of next generation membrane keep stable low voltage

in AGC commercial electrolyzers for over one year.

Next Generation

Stability of Lowest Voltage

+60

+30

0

-30

-60

-90

Voltage R

eduction

Unit : mV

at 6 kA/m2

D.O.L

BM2.7v5 (AGC Commercial Plant)

BM2.7v6 (AGC Commercial Pilot)

F-8080A

F-8020SP

F-8020

Note;

・Prototypes;-30～-50mV

・Latest type after optimizing manufacturing process;-50mV

-50 mV

F-8080

Fx-634

Key Technology of Next Membrane

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What is new?

Three new technologies were

optimally combined

Key Technology of Next Membrane

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Advantages Key Technologies

Voltage Reduction Fiber Arrangement

Higher CE

in Wider RangeFine Ion Channel

Higher Durability

against I/BaUniform Ion Channel

Optimized Fiber Arrangement

Sacrificial Fiber

PTFE

Fiber

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Optimized ClothConventional Cloth

Making use of optimized fiber arrangement, this makes

next generation membrane shows lowest voltage.

F-8080/F-8080A Next generation

Next generation membrane shows higher CE

not only at high temperature but also at low temperature.20

94

95

96

97

98

65 75 85 95 105

C.E

.(%

)

Catholyte outlet temperature (deg-C)

New Generation

F-8080

F-8080A

Higher CE in Wider Temperature Range

6 kA/m2, 32 wt% NaOH, 200 g/l NaCl

95

96

97

98

65 70 75 80 85 90 95 100 105

CE

(%)


Next Generation

F-8080AF-8080

95

96

97

98

100 150 200 250

CE

(%)

NaCl (g/l)

Next generation membrane shows higher CE in weak brine. It is

suitable for electrolyzers which have less inner circulation of brine.

6 kA/m2, 90 oC, 32 wt% NaOH

Next Generation

F-8080A

F-8080

Higher CE in Weak Brine

94

95

96

97

98

25 30 35 40

CE

(%

)

NaOH (wt%)

22

Higher CE in Wider Range of Caustic Strength

Next generation shows higher CE in weak and strong caustic.

6 kA/m2, 90 oC, 200 g/l NaCl

Next Generation

F-8080A

F-8080

23

Durability against I/Ba

92

93

94

95

96

97

98

0 5 10 15

CE

(%

)

DOL after addition

F-8080

Next Generation

6 kA/m2, 80 oC, I/Ba=20/1 ppm

Next generation membrane has higher durability against I/Ba.

Note : Same durability against Ca as F-8080

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Furthermore!

25

F-8080 F-8080A Fx-XXX F-8080HD

Ra

tio

to

F-8

08

0

Frequent Load Tensile Test

Total number of frequent load tensile test until membrane breaking

(Sum of the value to various direction. Load : 60 % of tensile strength)

Next generation membrane is more robust than F-8080 and F-8080A.

Next Generation

Next Generation Membrane : Fx-634

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1. Lowest voltage

・50 mV lower voltage than F-8080 and F-8080A

3. Higher durability against I/Ba

2. Higher CE in both hydrated and dehydrated state

・Suitable for zero gap and finite gap

・Suitable for electorolyzer which has less inner circulation of brine

4. Better robustness

・Optimized fiber arrangement

Large quantity of Fx-634 will be delivered from 2Q 2017.

27

Summary

Next Generation Membrane : Fx-634

F-8080A : New Type of F-8080 series for Zero Gap

Influence of Zero Gap on the membrane・Higher temperature due to less heat removal

・50 mV lower voltage than F-8080/F-8080A

・Higher CE in both more hydrated and more dehydrated state

・Durability against I/Ba and better robustness

・Advanced F-8080 for higher temperature and weak brine, for hydrated state.

・Fine adjustment of F-8080 which has proven reliability.

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Information of CTCN(Climate Technology Centre and Network )

Importance of Energy Saving

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• Expected energy consumption reduction by

converting into membrane is 20-30%.

Electrolysis Process

Mercury Diaphragm Membrane

Energy efficiency

as 1.0 0.8-0.9 0.7-0.8

Potential financial scheme by UNFCCC

30

• COP 16 in 2010

established the

Technology

Mechanism.

• Climate Technology Centre &

Network (CTCN) is the operational

arm of the Technology Mechanism.

Courtesy: Rajiv Garg, ”CTCN: Support implementation of NAMAs”

Potential financial scheme by UNFCCC

31

The CTCN’s mission is “Stimulating

technology cooperation and enhance the development and transfer of

technologies to developing country Parties at their request”

1. Technical assistance to developing countries

2. Knowledge sharing and training

3. Fostering collaboration on climate technologies (including linking climate technology projects with

financing opportunity)

Services:

Overview of CTCN Services

1. Technical Assistance

2. Information and Knowledge

3. Collaboration and Networking

Climate Technology Centre and Network

Environmentally sound technologies deployed

Facilitate and enhance the transfer of climate technologies

Greenhouse gas emissions reduced and resilience to climate change increased

Targets in INDCs achieved


CTCN Technical Assistance

Provided:

• To developing countries upon their request

• Free of charge (value up to 250,000 USD)

• State of the art and locally relevant expertise

• To academic, public, NGO, or private entities…

Fast and short (3 pages) application process for countries


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Thank you for your attention

new flemion membranes for zero gap configuration · 2016-11-21 · 0,2 0,4 0,6 0,8 1 1,2 1,4 70 72...

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