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Home > Services > Generator Cooling Water Treatment Unit > Technology
¡¡Generator Cooling Water Treatment Unit > Technology

Following the extensive development of generator inner-cooling water treatment, we devote more and more to equipment R&D. We have complete facilities including pressure vessel manufacturing equipment, NDT devices, chemical & mechanical, welding and NDT lab. Complete technical equipment and experienced engineers keep us leading in Industrial technology development.

Performance comparison between XL series Unit and traditional technology
 
Item
National standard GB/T12145£­1999
Dosing copper corrosion inhibitor
Small Mixed bed treatment
Open circuit operation
XL series unit
Water quality (outlet)
PH (25¡æ)
>6.8
6.0-7.5
5.9-6.5
<6.5
7.0-7.9
¡¡Conductivity (¦Ìs/cm)
2
1-10
<0.2
<0.2
0.06-0.3
Cu2+ (¦Ìg/L)
¡Ü40
20-200
20-200
20-100
¡Ü5-20
Operation period
 
 
3 months
 
1-2 years
Safety
 
Normal
Normal
Bad
Excellent
Water saving
 
Normal
Good
Bad
Excellent
Integral assess
 
Bad
Normal
Bad
Excellent
 
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Application comparison in power plant
 
No.
Power Plant
Unit Capacity
Generator Cooling Type
Inner-cooling water treatment method
PH
DD (¦Ìs/cm)
Cu2+ (¦Ìg/L)
1
Pucheng Power Plant Unit 2
330MW
Water-hydrogen-hydrogen
A*
Small Mixed bed
6.21
0.520
40-200
B*
XL series unit
7.58
0.156
7-15.3
2
Pucheng Power Plant Unit 1
330MW
Water-hydrogen-hydrogen
A
Small Mixed bed
6.29
0.180
50£­200
B
XL series unit
7.63
0.230
5-11.2
3
Shiheng Power Plant Unit 3
300MW
Water-hydrogen-hydrogen
A
Periodical water replacement
6.29
 
48.7
B
XL series unit
7.65
0.211
6.0
4
Baoji Power Plant Unit 1
300MW
Water-hydrogen-hydrogen
A
Continuous water replacement
6.8
0.2-0.5
60
B
XL series unit
7.3
0.15
2-15
5
Qinling Power Plant Unit 6
200MW
Water-hydrogen-hydrogen
A
Continuous water replacement
6.5
0.2
25
B
XL series unit
7.7
0.18
8
6
Hancheng Power Plant Unit 4
125MW
Water-water
A
Chemical dosing
6.5
2-5
40-200
B
XL series unit
7.7
0.33
7.5
7
Shizuishan Power Plant Unit 1
300MW
Water-hydrogen-hydrogen
A
Chemical dosing
6.6
0.5-2.0
20£­120
B
XL series unit
7.62
0.162
8-15
8
Zhanjiang Power Plant Unit 1
300MW
Water-hydrogen-hydrogen
A
Chemical dosing
6.6
0.5-2.0
60-300
B
XL series unit
7.58
0.145
6-13
Note: A*- Before system modification; B*-After system modification.
 
Products characteristics
1. PH value of Outlet water increases from 6.0-6.5 (using small mixed bed) to 7.0-7.9
2. Cu2+ content reduces to below 5-20¦Ìg/L due to much less copper corrosion.
3. Conductivity of Unit outlet water maintains in 0.06-0.3¦Ìs/cm stably.
4. Design life cycle is 1 to 2 years. Only resin replacement or regeneration is needed while failure.
5. Online monitoring
6. XL series units are made of stainless steel and installed with inlet/outlet resin trap.
7. Maintenance free.

 
 
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