Huali industrial high-temperature rock wool has excellent performance in corrosion protection

    Corrosion under insulation (CUI) refers to the corrosion phenomenon that occurs on the surface of equipment with thermal or cold insulation layer, which brings great hidden dangers to the stable operation and safe production of equipment. Due to the presence of the insulation layer, CUI has strong concealment and is generally difficult to detect. In order to reduce the corrosion under the insulation layer, it can be optimized from the aspects of anti-corrosion coating and insulation structure, among which the selection of low-corrosion insulation materials is an important measure.Huali research department has focused on the research of rock wool insulation products, used in high temperature industrial insulation fields.Now we have ASTM rock wool products, rock wool board, rock wool blanket, and rock wool pipe. They have excellent performance in corrosion protection.

    At present, in the field of pipeline insulation, common insulation materials have obvious differences in anti-corrosion performance. In order to verify the anti-corrosion effect, we conducted a comparative test in 2022: we used Huali rock wool pipe, rock wool blanket, aluminum silicate blanket, glass wool and aerogel mounted on the same pipeline for anti-corrosion comparison tests.

    After one year of placement under outdoor conditions, when the insulation material was opened, we found that the steel pipe area where the rock wool pipe was installed had very light corrosion, and the corrosion was basically invisible; The rock wool blanket pipe also has better corrosion protection, with only a slight rust on the top, which may be caused by the barbed wire used in the blanket. The area of the carbon steel pipe where the aerogel is installed is very seriously corroded, whether it is the top or side of the pipe, there are very obvious rust; Rust has also occurred at the top of the carbon steel pipe area where glass wool is installed; The area where the aluminum silicate blanket is installed has relatively light corrosion, but a small amount of noticeable rust also appears on the top.

    Huali rock wool industrial high-temperature rock wool has the advantages of strong high temperature resistance, good hydrophobicity, low thermal conductivity and no toxic and asbestos free, which can provide protection for devices, pipelines and reactors in the petrochemical industry, and our rock wool products is a reliable guarantee for the petroleum refining industry to reduce energy consumption, ensure long-term stability of the system and improve production efficiency.

    This comparative test clearly shows the advantages of huali rock wool industrial high-temperature rock wool products in pipeline corrosion protection. Huali industrial high-temperature rock wool is designed with high-quality raw materials and formulas, with high hydrophobic properties, while effectively avoiding the introduction of corrosive sulfate, sodium fluoride plasma, soluble chloride ion content as low as 10ppm, greatly protect of metal equipment, pipelines, etc., Also rock wool insulation materials for pipeline insulation can reduce the loss caused by later maintenance costs and downtime, rock wool products are a perfect solution for industrial thermal insulation and CUI reduction.