Vanconol® ET-103 Scale and Corrosion Inhibitor

Scale and Corrosion Inhibitor

Vanconol® ET-103

Description

Industrial circulating water systems (such as those in power plants, steel mills, fertilizer plants, and oilfield water injection systems) and boiler systems are both subject to scaling and corrosion. Scaling not only increases the thermal resistance of equipment, but also intensifies the concentration differences of dissolved oxygen and salt ions at the metal surface, leading to the formation of concentration cells and further accelerating corrosion. In practice, scale and corrosion inhibitors are typically added to reduce water hardness and mitigate scaling and corrosion.

Chemical Composition

A blend of alkyl imidazoline corrosion inhibitors, scale inhibitors, specialty surfactants, and synergists.

Mechanism of Action

   The scale-inhibiting components in this product effectively chelate salt ions in the system, suppressing scale formation. Meanwhile, the corrosion-inhibiting components adsorb onto the metal surface forming coordinate bonds, creating a monomolecular adsorption film that prevents corrosive media from contacting the metal, thereby protecting the metal surface.

Typical Properties

Property                   ET-103                             Test Method

Appearance                   Clear yellow liquid                      Visual

Water solubility               Dispersible in water, no phase separation           GB/T6324.1

Density (d20) g/cm³   0.9-1.1                             GB/T13378

pH (10% aqueous solution)   ≤8                                  SH/T0069

Kinematic viscosity mm²/s (40°C) <80                      GB/T 265

Corrosion rate (mm/a)        ≤0.076                       Q/SY126-2014

Scale inhibition efficiency %         ≥90                              Q/SY126-2014

Application Method

Check whether the product in the drum is in a molten state; if solidified, pre-heat to melt before use.

Calculate the required amount of corrosion inhibitor based on the produced water volume, then measure it into a dedicated container. Dilution may be performed as needed on site; softened water should be used for dilution.

The recommended dosage of this corrosion inhibitor is 15 ppm or higher.

For service conditions above 65°C, an active matter content of 75 ppm or higher is recommended.

Dosage requirements may vary depending on the corrosive media content of the oilfield produced water. Laboratory testing prior to use is recommended to determine the most economical dosage.