Technology and Innovation
on Energy Saving in Chlor-alkali Industry
JIANGYIN ANCAN ELECTROCHEMICAL EQUIPMENT LTD.
By Mr. Gao Jian
Contents
1
Caustic/Chlorine Cost Constituents and Reduction
2
ANCAN Technology Innovation to Stay Ahead of Production
3
ANCAN Technical Support and Service
4
Conclusion
Caustic/Chlorine Cost Constituents and Reduction
1
Rapid Development of Chlor-alkali in China
Caustic Capacity Ranked First in the World Since 2006.
X10,000 ton NaOH
4500
4000
3500
3000
2500
2000
1500
1000
500
Membrane Cells
Diaphragm Cells
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
1998
1997
1996
1995
1994
1993
1992
1991
1990
0
Year
1
Caustic/Chlorine Cost Constituents and Reduction
• Caustic/Chlorine Production Cost Constituents
29%
3% 1%
5%
1%
9%
48%
2%
2%
Direct Current
NaCl
Auxiliary Power
Membrane
Investment
Labour
Chemicals
Maintenance
Utility
1
Caustic/Chlorine Cost Constituents and Reduction
Method of Reduce DC Power Consumption
DC Power Cost = Voltage x
Unit Cost of
x Efficiency
Electricity
x Current
Average Current to
Decide Production
Capacity
Improve Membrane
Efficiency
Reduce Average Electricity Cost
Reduce Average Voltage
2
ANCAN Technology Innovation to Stay Ahead of Production
Technology Innovation of Reducing DC
Power Consumption
Zero Gap Modification
Elastic mesh
Many existing membrane electrolyzer
are finite gap. ANCAN can modify the
electrodes to zero gap.
Activated mesh
2
ANCAN Technology Innovation to Stay Ahead of Production
Technology Improvement on Reducing DC Power
Benefit of Zero Gap Modification --- Comparing with Finite Gap
1 Lower cell voltage --- Saving of > 140 kWh/t 100% NaOH
2 Can increase operating current, equivalent to >10% of
production increase
3 Reduce membrane vibration, prolong membrane life span
4 More even current distribution, safer operating condition
Requirement
---Zero Gap Modification
---Cell Voltage Monitoring
---Differential Pressure Control and Protection
---Operation Skill
2
Technology Innovation to Stay Ahead of Production Cost
Zero Gap Modification of Asahi Kasei Electrolyzer
Gasket
Anode Mesh
Activated Mesh
Elastic Mesh
Membrane
2
ANCAN Technology Innovation to Stay Ahead of Production
Zero Gap Modification of BiTAC Electrolyzer
Gasket
Anode Mesh
Elastic Mesh
Activated Mesh
Membrane
2
ANCAN Technology Innovation to Stay Ahead of Production
Zero Gap Modification of F2 Electrolyzer
Activated
Mesh
Activated
Mesh
Elastic Mesh
Elastic Mesh
2
ANCAN Technology Innovation to Stay Ahead of Production
Technology of Reducing DC by Reducing Voltage
Improved Anode Coating
Improved Cathode Coating
2
ANCAN Technology Innovation to Stay Ahead of Production
ANCAN Coating - Anode
Anode Coating Magnified
Membrane Electrolyzer Anode Coating：
◆ Excellent electrochemical characteristics
and longer life.
◆ Lower chlorine evolution potential, higher
anode efficiency
◆ Good resistant properties against deposit
of anolyte contaminants
2
ANCAN Technology Innovation to Stay Ahead of Production
ANCAN Coating -Cathode
Cathode Coating Magnified
Membrane Electrolyzer Cathode Coating
◆Stable and good electrolysis property
and can resist some degree of polarity
reversal.
◆ Lower Electric potential
◆ Good resistant properties against
deposit of catholyte contaminants
3
ANCAN Technical Support and Service
◇Full Range of Electrolyzer Maintenance and Repair
Service
◇Electrolyzer Components Replacement
ANCAN Technical Support and Service (Maintenance)
3
BM-2.7
F2
DD350
Asahi Kasei
B1
Eltech
BiTAC
INEOS
FM-21 SP
3
ANCAN Technical Support and Service ( spareparts)
PFA Flexible Hose
Membrane
Electrolyzer Gasket
Other Electrolyzer’s
Components
3
ANCAN Technical Support and Service (Maintenance)
ANCAN has provided technical service and support to more than
130 Chlor-alkali Plants in China.
ANCAN’s Partial Reference List outside of China
CUSTOMER NAME
REPAIRED ELECTROLYZER
SABAH FOREST INDUSTRIES SDN.BHD
FM21
TAIWAN PLASTIC INDUSTRY CO., LTD
BM2.7
TAIWAN PULP & PAPER CORP.
DN350
PT.PINDO DELI PULP AND PAPER MILLS
DD350
PT INDAH KIAT PULP PAPER TBK
OXYTECH
PT LONTAR PAPYRUS PULP PAPER INDUSTRY
OXYTECH
PT PABRIK KERTAS TJIWI KIMIA TBK.
OXYTECH
PT PABRIK KERTAS INDONESIA
OXYTECH
MALAY-SINO CHEMICAL INDUSTRIES SDN.BHD
DD350
SOUTH BASIC CHEMICALS LIMITED COMPANY
。。。。。。
DD350
BM2.7
。。。。。。
4
Conclusion
ѳ ANCAN got >20 yrs of experience for all kind
of Electrolyzers maintenance & repair. ANCAN
can provide Chloralkali Industry following
support & service ：
ѳ 1、Electrolyzer modification work
ѳ 2、Supply spare parts/components for all kind
of Electrolyzers
ѳ 3、To support & provide routine service for all
kind of Electrolyzers
Thank You
Jiangyin Ancan Electrochemical Equipment Ltd.
E-mail：gj@ancan-cn.com
TEL：+86-510-86593903
Fax：+86-510-86591880
http://www.ancan-cn.com