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Power industry solutions
The necessity of steel structure anticorrosion in power industry
There are many high-temperature and highly corrosive environments in the power industry. In this environment, traditional coatings are prone to cracking, peeling, and failure.
Taking the flue gas desulfurization system of a power plant, in the wet flue gas desulfurization device, there are four locations that are most vulnerable to corrosion damage, namely: absorber, scrubber, duct outlet, mixing chamber and flue. The acid condensate formed in the flue gas desulfurization process, coupled with the environment such as wear, pitting and chlorination corrosion, are the root causes of corrosion damage to stainless steel scrubbers.
Factors such as high temperature, dew point, dry-wet cycle, gas flow rate, high-concentration sulfate solution, fluoride and chloride will accelerate pitting and crevice corrosion.
Coating reference system for steel structure of substation＞＞
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Examples of painted parts
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Protection plan
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Road number
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thickness(μm)
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Substation steel structure surface
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Surface pretreatment
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Sandblasting and rust removal reach Sa2.5 level
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Cold spray zinc primer
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2
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80-120
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High-temperature pipelines in substations
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Surface pretreatment
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Sandblasting and rust removal reach Sa2.5 level
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Silicone high temperature resistant paint
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1
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60
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Coating reference system for steel structure of thermal power plant＞＞
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Examples of painted parts
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Protection plan
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Road number
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thickness(μm)
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Air cooling platform/coal shed grid
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Surface pretreatment
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Sandblasting and rust removal reach Sa2.5 level
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Cold spray zinc primer
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2
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100
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Silver metallic finish
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1
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20
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Boiler bracket
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Surface pretreatment
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Sandblasting and rust removal reach Sa2.5 level
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Cold spray zinc primer
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1
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80
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Cold spray zinc sealant 80um
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1
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80
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Polyurethane finish 70um
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1
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70
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Solar energy steel structure coating reference system＞＞
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Examples of painted parts
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Protection plan
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Road number
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thickness(μm)
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Solar steel structure surface
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Surface pretreatment
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Sandblasting and rust removal reach Sa2.5 level
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Cold spray zinc primer
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2
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80-120
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| Silver metallic finish |
1
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60
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Reference System for Maintenance and Painting of Power Steel Structure＞＞
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Examples of repaired painted parts
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Protection plan
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Road number
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thickness(μm)
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Air-cooled/Boiler Support/Suspended Suite/Coal Conveying Station Shed/Grid
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Surface pretreatment
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Sandblasting and rust removal reach Sa2.5 level
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| Cold spray zinc primer | 1 | 80-120 | |
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Epoxy Mica Intermediate Paint
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1 | 60-80 | |
| Fluorocarbon topcoat |
1
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60
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Power industry painting case
Other Industry Solutions
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Public Security Record No. 32021102000961| Su (tin) dangerous chemical word 02802