Technical Bid for Membrane Cell
Electrolyzers for Cl2 & NaOH
0
Jan
2019
Technical Bid
Rev .
Month
Year
Description
www.chloralkalianode.com
Membrane Cell Electrolyzer
For Electrolytic Production of Cl 2 & NaOH
Technical Bid Jan, 2019
T. Prabu
D. Siv a Shanker
Jeyakumar V. P.
Executiv e - Design
AGM - Technical
Managing Director
Prepared By
Checked By
Approv ed By
Page 1 of 20
Membrane Cell Electrolyzer
For Electrolytic Production of Cl 2 & NaOH
Technical Bid Jan, 2019
INDEX
Sl. No.
DESCRIPTION
PAGE
i.
Cover sheet
1
ii.
Index
2
1
Introduction
3
2
Principle
Chart
/
General
4
Hypochlorite
5
Production
3
4
Electrolyzer selection guide
6
5
Technical Specification
7
6
Cathode Zero Gap technology
10
7
8
Dimension
9
Electrolyzer
11
Anode
13
Cathode
14
Quality Control
15
10
Inspection
11
Partial list of Customers
16
12
Warranty
17
13
Brochures
19
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Page 2 of 20
Membrane Cell Electrolyzer
For Electrolytic Production of Cl 2 & NaOH
Technical Bid Jan, 2019
1. Introduction:
Tiaano, I ndia has been established since 1992 w ith w ell-equipped latest in-plant facilities &
qualified engineers…
To offer… Quality, Economy & On-time deliv ery of  Electro-chemical equipments. 
Engineering equipments.  Turnkey Projects, under single platform to Marine, Chemical,
Pow er, Water, Steel, Automobile, Electronics, Metal finishing & Aerospace I ndustries.
By using…
Precious metal oxides of I ridium, Ruthenium, Platinum, Palladium and exotic
Metals like Titanium, Tantalum, Niobium, Zirconium, Nickel and their alloys.
To save... Pow er, resist corrosion, reduce maintenance cost & av oid product contamination.
Tiaano, offers platinum group precious metal oxide coatings w ith long life-times and low
operating potentials for service in Chlor-alkali cells. Tiaano’s coating systems are based on a
range of Nano-structured multi-layers of metal oxides; these include Ruthenium, I ridium,
Platinum, Palladium and Titanium - offer increased performance over conventional materials
by maximizing catalytic phases and surface area interactions.
By adding doping agents to the catalysts, w e are able to make them more selectiv e and
further improv e performance. The dev eloped coating technology allows for v ery thin layers
to be deposited increasing cost effectiv eness. The MMO Coated substrate w ill undergo
multiple thermal treatments at elev ated temperatures. This process w ill achiev e v ery good
bonding properties betw een the mixed metal oxide coating and the substrate.
Please v isit our site link http://w w w .chloralkalianode.com for more details about our
engineering and electrochemical equipments for Chlor-Alkali industries.
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Page 3 of 20
Membrane Cell Electrolyzer
For Electrolytic Production of Cl 2 & NaOH
Technical Bid Jan, 2019
2. Principle / Production Chart – General:
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Page 4 of 20
Membrane Cell Electrolyzer
For Electrolytic Production of Cl 2 & NaOH
Technical Bid Jan, 2019
3. Principle / Production Chart – Sodium Hypochlorite:
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Page 5 of 20
Membrane Cell Electrolyzer
For Electrolytic Production of Cl 2 & NaOH
Technical Bid Jan, 2019
4. Cell Selection Guide:
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Page 6 of 20
Membrane Cell Electrolyzer
For Electrolytic Production of Cl 2 & NaOH
Technical Bid Jan, 2019
5. Technical Specification:
a. General
:
i. Equipment
:
Electrolyzer for Membrane Cell.
ii. Design
:
‘Zero Gap’
iii. Application
:
Production of Chlorine and Caustic.
iv . Design & Mfd. By
:
Tiaano, Chennai, I ndia.
v. Country of Origin
:
I ndia.
vi. Model Number
:
Refer the Membrane cell selection guide
b. Input (Feed Brine Specification) :
Calcium + Magnesium
:
< 20 ppb.
Sulphate
:
Max. 10 Gpl
Sodium Chlorate
:
Max. 6 Gpl
I ron
:
Max. 0.1 ppm
Free Chlorine
:
Nil
Turbidity
:
Max. 10 ppm
Sodium Chloride
:
300 ~ 305 Gpl
Depletion of NaCl
:
Range 195 ~ 205 Gpl; Target 200 Gpl
Operation “k” factor
:
0.11based on membrane maintenance.
I nlet Temperature
:
70 to 75 Degree C
Outlet Temperature
:
85 to 90 Degree C
Outlet Anolyte conc.
:
220 ± 05 Gpl at CD of 4.0 kA/m2
Outlet Catholyte conc.
:
32 ± 1% at CD of 4.0 kA/m2
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Page 7 of 20
Membrane Cell Electrolyzer
For Electrolytic Production of Cl 2 & NaOH
Technical Bid Jan, 2019
c. Input (Raw materials)
:
i. Capacity
:
Refer the enclosed cell selection guide.
ii. Raw Material
:
Per ton of Cl2
1. NaCl
:
2.0 Tons
2. Electricity
:
2.5 kWh (Cells 2.2 + Auxiliary units 0.3)
3. Water
:
1.5 M 3
4. Chemical
:
Treatment chemicals as required.
Operating CD
:
4.0 kA / M 2
Anode Substrate
:
Titanium as per ASTM B 265 Gr. 2
Cathode Substrate
:
Nickel as per ASTM B 162 Gr. 201
Catalyst MOC
:
Platinum group precious Mixed Metal Oxide.
Deposition
:
Thermal Decomposition process.
Surface
:
Expanded Mesh
d. Material of construction:
e. Dimensionally Stable Anode coating:
 Very low oxygen coating with slightly higher chlorate inefficiency.
 Suitable for all cell technologies like UHDE, CEC, Asahi Glass, Lurgi, ELTECH &
etc.
 Suitable for current densities in excess of even 9 kA/m2.
 Excellent stability of the MMO coated titanium anode; improv ing the products
purity and maintenance costs.
 Allow s controlled, minimal gap cells.
 Substantially reduced energy consumption.
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Page 8 of 20
Membrane Cell Electrolyzer
For Electrolytic Production of Cl 2 & NaOH
Technical Bid Jan, 2019
 I mproved product quality & Exhibit long life.
 Operate at low v oltage.
 Minimize energy consuming side reactions.
 I mprove tolerance of operational upsets.
f. Features of Cathode Coating:
 Tiaano prov ides cathode coating for chlorine membrane cells. This platinum
based electro catalyst deliv ers the low est hydrogen ov er-potential for
maximum electrical sav ings.
 I t is expected to giv e v oltage sav ings of 280 mV v s. bare nickel cathodes. This
translates to pow er consumption sav ings of 200 DC kW Hr. / MT of chlorine. As
current density increases, sav ings increase.
 Tiaano’s Cathode Coating also prov ides excellent wear resistance and long life
through a permanent coating w hich causes no caustic contamination as
compared to competitiv e coatings.
 I ts performance is limited only by the impurities in the caustic circulation system.
Tiaano’s coatings are more resistant than other cathode coatings to iron
fouling.
 Tiaano’s Cathode Coating can be applied ov er a v ariety of substrates
including mesh, louv ers, sheet, punched plate and screen and in all chlorine
membrane technologies.
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Page 9 of 20
Membrane Cell Electrolyzer
For Electrolytic Production of Cl 2 & NaOH
Technical Bid Jan, 2019
6. Zero Gap Technology
i. Purpose
:
: Reducing the gap betw een anode and cathode. I n zero gap
technology, both anode and cathode surfaces are in contact w ith the
membrane, i.e. electrode gap equals to membrane thickness. Achiev ing
uniform current distribution the original anode and cathode mesh are not fully
flat; this is creating some non-uniformity in the current distribution. The elastic
element can adjust its thickness follow ing meshes profile, so the gap betw een
anode and cathode is kept uniform.
ii. Concept
: Zero Gap Technology totally remov es the ohmic drop related to
ionic mov ement through the Catholyte gap, by installation of a package of…

Cathode screen w hich is used as current collector.

A fine cathode screen shifts up to gently touch the membrane.

I n betw een them, durable elastic element is inserted, to transport
electrons by contact from the current collector to the fine cathode
screen, and capable of compensating for mechanical tolerances w ith
no harm for the membrane.
iii. Objectiv e:
o
Elastic element fills the gap betw een cathode & membrane.
o
Reduction in cell v oltage & Low hydrogen ev olution v oltage cathode.
o
Suitable for electricity conduct from current distributor to activ ated
cathode.
o
No high pressure on membrane.
o
Elasticity can long last & Durable performances in the life.
iv . Components:

Nickel Mattress: assuring a perfect “zero-gap” condition betw een cathode
mesh and membrane.

Activ ated Nickel Flynet: fine w ov en mesh, activ ated w ith a MMO coating
specific for “zero-gap” applications, positioned on top of the Nickel Mattress.
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Page 10 of 20
Membrane Cell Electrolyzer
For Electrolytic Production of Cl 2 & NaOH
Technical Bid Jan, 2019
7. Dimensions - Electrolyzer:
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Page 11 of 20
Membrane Cell Electrolyzer
For Electrolytic Production of Cl 2 & NaOH
Technical Bid Jan, 2019
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Page 12 of 20
Membrane Cell Electrolyzer
For Electrolytic Production of Cl 2 & NaOH
Technical Bid Jan, 2019
8. Dimensions – Anode:
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Page 13 of 20
Membrane Cell Electrolyzer
For Electrolytic Production of Cl 2 & NaOH
Technical Bid Jan, 2019
9. Dimensions – Cathode:
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Page 14 of 20
Membrane Cell Electrolyzer
For Electrolytic Production of Cl 2 & NaOH
Technical Bid Jan, 2019
10. Quality Control
:
The following tests will be conducted by our Internal QA Department
and necessary certificates will be produced.
o
Dimensional Test.
o
Coating thickness by volumetric method.
o
Coating peel-off test by scotch tape testing.
o
DP test on anode Pan.
o
SEP value test.
o
Hydro test.
o
Planarity as per the OEM standards, use precision straight
edge and hand feel test at the beginning and later will
go for indicator gauge for planetary test.
o
SEP Value Test:
The SEP Test is conducting to determine the coating activity. The
single electrode potential (SEP) is measured to assure the quality
of the coating in relation to the environment to which it will be
operated. In theory, the method determines the contribution of
the anode coating to the total cell voltage. This is accomplished
by measuring the voltage of the coating against a standard
calomel reference.
Inspection:
by you at our site before shipment. If any third
party inspection is required, it will be arranged by you with your
cost.
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Page 15 of 20
Membrane Cell Electrolyzer
For Electrolytic Production of Cl 2 & NaOH
Technical Bid Jan, 2019
11. Partial list of customers:
Year
ANODE /
CATHODE
COUNTRY
SCOPE OF TIAANO
OEM
MODEL NO.
ACTIVE AREA
(m2)
CD
(KA)
2019
ALGERIA
Anode &
Cathode
Fabrication & Supply
ELTECH
EC 521
0.18
6
2018
NEW
ZEALAND
Anode &
Cathode
Design, Fabrication &
Supply
TIAANO
Tiaano Bleach
0.5-E
0.5
4
2018
INDIA
Cell Assembly
Design, Fabrication &
Supply
TIAANO
Tiaano Bleach
2.0-C
2
4
2018
ARGENTINA
Anode &
Cathode
Fabrication & Supply
TRANSQUI
M
Tiaano Bleach
4.0-E
1
4
2018
INDIA
Cell Assembly
Design, Fabrication &
Supply
TIAANO
Tiaano Bleach
0.25-C
0.25
4
2017
INDIA
Cell Assembly
Design, Fabrication &
Supply
TIAANO
Tiaano Bleach
0.5-C
0.5
4
2017
IRAN
Anodes
Repair & Recoating
ICI
FM-21
0.21
4
2017
ALGERIA
Anodes
Repair & Recoating
ELTECH
EC 521
0.18
6
2017
INDIA
Cathode
(Zero Gap)
Retrofit
AGC
AZEC F2
1.6
4.5
INDIA
Anodes
Repair & Recoating
CEC
DCM 405*2
3.03
4.5
INDIA
Cathode
Repair & Recoating
CEC
DCM 405*2
3.03
4.5
2016
INDIA
Anodes
Repair & Recoating
UHDE
BM2.7
2.72
6
2015
SOUTH
AFRICA
Anode &
Cathode
Design, Fabrication &
Supply
CHLORGE
N
Tiaano Bleach
0.15-E
0.15
2
2014
USA
Anodes
Repair & Recoating
UHDE
BM2.7
2.72
6
2012
IRAN
Anodes
Repair & Recoating
ICI
FM-21
0.21
4
2011
INDIA
Anodes
Design, Fabrication &
Supply
TIAANO
Iodate
0.42
1.5
2010
BANGLADE
SH
Anodes
Design, Fabrication &
Supply
TIAANO
Chlorate
0.42
1.5
2009
INDIA
Cell Assembly
Design, Fabrication &
Supply
TIAANO
Hypo 10
0.64
4
SAUDI
ARABIA
Anode &
Cathode
Repair, Recoating &
Retrofit
ELTECH
MGC / EXL
1.5
4.72
SAUDI
ARABIA
Cathode
(Zero Gap)
Retrofit
ELTECH
MGC / EXL
1.5
4.72
1997
IRAN
Anodes
Repair & Recoating
1995
INDIA
Anodes
Repair & Recoating
2016
2002
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Page 16 of 20
12. Warranty
Membrane Cell Electrolyzer
For Electrolytic Production of Cl 2 & NaOH
Technical Bid Jan, 2019
:
Mechanical
Warranty:
Tiaano
warranties
that
the
mechanical
fabrication work is without faults and with the use of best and
appropriate material.
Tiaano warranties also the tightness of the
elements based on the proper handling and operation. The warranty
period shall be 12 months from the date of commissioning the elements
or 18 months from the date of our invoice. Excluded from the warrantee
are damages based on improper operation, corrosion and short circuit
attack of the elements by chlorine or caustic soda.
Warranty on Coating: The lifetime warranty will be 7.5 years from the
date of shipment or 7.0 years for the element coating after its
commissioning under normal operating conditions of cells and at a
maximum current density of 4.0 kA / M2. In a warranty case, customer
has to prove the observance of these operating conditions.
Tiaano warrantees that during the warrantee period the actual
electrode potential does not exceed the warranted potential of 1.38 V
and should not exceed the guaranteed potential of 1.41 V at any
instance, with the condition of measuring SEP anode 85oC, 280 Gpl NaCl
and 3.0 kA/M2.
In case of malfunction of the elements which can be attributed to the
electrode coating itself, Tiaano will recoat the anode at a price that is
reduced by the ratio of the life time achieved to the life time warranted.
In the latter case, the formula for the reduced price will be as follows:
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Page 17 of 20
Membrane Cell Electrolyzer
For Electrolytic Production of Cl 2 & NaOH
Technical Bid Jan, 2019
Price = T / life time x Po
Where,
Price
=
Reduced price to be paid by client for recoating.
T
=
Months on line after start up.
Life time=
warrantee period in months
Po
price of recoating prevailing at the time when the
=
Elements at Tiaano workshop.
Any
further
claims by the customer
for
any indirect
or
consequential loss or damage including but not limited to loss of
profits and loss of production are excluded.
Once the warranty period is over, the customer / owner is
expected to maintain the electrodes / electrolyzers / anodes /
Cathodes continuously to enhance maximum life and quality. If
required, the reconditioning or refurbishment shall be the
responsibilities of the owner and Tiaano may be approached for
required guidance and advice.
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Page 18 of 20
Membrane Cell Electrolyzer
For Electrolytic Production of Cl 2 & NaOH
Technical Bid Jan, 2019
13. Brochure for electrodes:
14.
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Page 19 of 20
Membrane Cell Electrolyzer
For Electrolytic Production of Cl 2 & NaOH
Technical Bid Jan, 2019
Brochure for Chlor Alkali Industries:
www.chloralkalianode.com
Page 20 of 20