Petrochemicals and Energy Storage-Holy Hong Chemical (Dalian) Co., Ltd.

Corrosion Protection Project for Large Chemical Storage Tank Area

China Northeast Base

2024

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Facing challenges

In this project, the equipment’s steel structure is exposed long-term to a severe corrosive environment characterized by high salt spray, high humidity and heat, and intense ultraviolet radiation—conditions compounded by real-world constraints such as fluctuating medium temperatures and limited inspection and maintenance cycles. The project must not only meet multiple technical specifications, including ISO 12944 and industry standards for the petroleum and petrochemical sectors, but also comply with water-based, environmentally friendly coating requirements. This poses extremely high challenges to the corrosion resistance, aging resistance, and overall engineering reliability of the coating system.

Solution

In response to the project’s operating conditions and design life requirements, Holy Hong has developed a multi-layer, systematic heavy-duty anti-corrosion coating solution based on ISO 12944 and relevant petrochemical standards. This solution incorporates technologies such as waterborne hyperbranched epoxy, graphene-reinforced coatings, and fluorocarbon topcoats. Through the coordinated design of cathodic protection in the primer, shielding enhancement in the mid-coat, and weather-resistant protection in the topcoat, Holy Hong ensures environmental compliance while providing long-term, stable protection for the equipment’s steel structures.

Project outcomes

After the project was implemented, the coating system demonstrated outstanding resistance to salt spray, aging, and temperature fluctuations under harsh service conditions. The protective performance on critical components remained stable and reliable. Not only did it meet relevant industry standards and environmental protection requirements, but it also effectively extended the equipment’s anti-corrosion service life, reduced the frequency of subsequent maintenance, and lowered overall operating costs. This provides a replicable example of water-based heavy-duty anti-corrosion applications for similar projects.

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