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Petroleum and petrochemical industry solutions

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石油石化行业解决方案

Time of issue:2021-08-05 12:05:42
The necessity of anticorrosion of steel structure of petroleum and petrochemical storage tank

Storage tanks are an indispensable part of the petroleum and petrochemical industry. Storage tanks are used for storage of crude oil, gasoline, diesel, etc. Petroleum products are very dangerous, so the protection of petroleum storage tanks is very important.
Since petroleum substances are solvents, they have strong solubility for general paints, so pay attention to oil resistance when choosing anticorrosive paint solutions for petroleum storage tanks.

Reference system of anticorrosive coating supporting schemes for steel oil storage tanks>>


Surface treatment:
1. Sandblasted to Sa2.5 or above, roughness 45~70μm;
2. Steel structure defects caused by welding or spatter, sharp angles, sharp edges, etc. that affect the quality of coating should be removed;
3. The surface to be painted should be free of water, dust and other dirt.

Climate environment:
The ambient humidity should be between 5 and 35℃, and no construction is allowed when it is rainy, foggy, snowy, or when the relative humidity is greater than 80%.

1.1 Painting part: the bottom surface of the tank bottom

Coating structure Variety of paint colour Dry film thickness/μm Recommended number of coating passes
Primer/bottom surface in one Epoxy thick build anticorrosive coating black 300 3
Primer Inorganic zinc-rich primer around the weld grey 80 2

1.2 Coating parts: 1.8 meters below the upper surface of the tank bottom plate and the lower part of the tank inner wall (crude oil tank, naphtha tank)

Coating structure Variety of paint colour Dry film thickness/μm Recommended number of coating passes
Primer Epoxy primer Iron oxide red 120 1
Topcoat Solvent-free epoxy anticorrosive coating grey 200 1

1.3 Coating position: the lower surface of the floating roof + the outer surface of the outer edge plate of the floating roof

Coating structure Variety of paint colour Dry film thickness/μm Recommended number of coating passes
Primer Epoxy oil resistant, static conductive and anticorrosive paint primer Red-brown 150 2
Topcoat Epoxy oil resistant, static conductive and anticorrosive paint finish Light gray 100 1
Water-based solution:
Coating structure Variety of paint colour Dry film thickness/μm Recommended number of coating passes
Primer Waterborne epoxy graphene oil resistant, static electricity conductive and anticorrosive paint primer Red-brown 150 3
Topcoat Water-based epoxy mica oil-resistant, static-conducting and anticorrosive paint finish Light gray 150 3

1.4 Coating parts: heater outer surface and coil, heater bracket

Coating structure Variety of paint colour 干膜厚度/μm 建议涂装道数
Primer Epoxy silicone heat-resistant primer Iron oxide red 150 3
Topcoat Epoxy silicone heat-resistant topcoat grey 100 2
Water-based solution:
Coating structure Variety of paint colour Dry film thickness/μm Recommended number of coating passes
Primer Water-based epoxy silicone heat-resistant primer Iron oxide red 150 3
Topcoat Water-based epoxy silicone heat-resistant topcoat grey 100 2

1.5 Painting parts: the inner surface and internal structure of the floating tank

Coating structure Variety of paint Colour Dry film thickness/μm Recommended number of coating passes
Primer Water-based inorganic zinc-rich primer grey 80 1

1.6 Coating parts: the outer surface of the tank wall + the upper 2cm part of the inner surface of the tank wall, the upper surface of the floating roof, the wind-resistant ring, etc.

Coating structure Variety of paint colour Dry film thickness/μm Recommended number of coating passes
Primer Epoxy zinc-rich primer grey 75 1
Intermediate paint Epoxy Mica Intermediate Paint grey 100 1
Topcoat Acrylic polyurethane anticorrosive finish White 80 1
Water-based solution:
Coating structure Variety of paint colour Dry film thickness/μm Recommended number of coating passes
Primer Waterborne epoxy zinc-rich primer grey 80 2
Intermediate paint Waterborne epoxy mica intermediate paint grey 100 2
Topcoat Waterborne acrylic polyurethane anticorrosive topcoat White 80 2

1.7 Coating part: the outer surface of the volatile oil tank wall

Coating structure Variety of paint colour Dry film thickness/μm Recommended number of coating passes
Primer Thermal insulation cooling paint primer grey 60 1
Intermediate paint Intermediate paint for heat insulation and cooling paint White 90 1
Topcoat Thermal insulation cooling paint finish White 150 2
Water-based solution:
Coating structure Variety of paint colour Dry film thickness/μm Recommended number of coating passes
Primer Water-based thermal insulation and cooling paint primer grey 100 2
Intermediate paint Intermediate paint for water-based thermal insulation and cooling paint White 100 2
Topcoat Water-based heat insulation and cooling paint finish White 100 2

1.8 Coating parts: anti-corrosion on the inner wall of the solvent tank

Coating structure Variety of paint colour Dry film thickness/μm Recommended number of coating passes
Primer Inorganic zinc-rich primer grey 120 2

1.9 Coating part: high-performance coating on the outer wall of the storage tank

Coating structure Variety of paint colour Dry film thickness/μm Recommended number of coating passes
Primer Epoxy zinc-rich primer grey 75 1
Intermediate paint Epoxy Mica Intermediate Paint grey 100 1
Topcoat Fluorocarbon topcoat Agreed 80 1
Water-based solution:
Coating structure Variety of paint colour Dry film thickness/μm Recommended number of coating passes
Primer Waterborne epoxy zinc-rich primer grey 80 2
Intermediate paint Waterborne epoxy mica intermediate paint grey 100 2
Topcoat Water-based fluorocarbon top coat Agreed 80 2
Reference system for maintenance and anti-corrosion coating schemes of steel oil storage tanks>>

 

Examples of painted parts
Protection plan
Road number
thickness(μm)
Outer wall of petroleum storage tank
 
Surface pretreatment
Sandblasting and rust removal reach Sa2.5 level
Epoxy zinc-rich primer
1
80-120
Epoxy Mica Intermediate Paint
1
60-80
High fluorocarbon topcoat/polyurethane topcoat
1
80

Petroleum and petrochemical industry painting case

行业解决方案

Petroleum and petrochemical industry painting case

Other industry solutions

行业解决方案

Other industry solutions

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