Vanconol® RF-401 Refinery Tower Top Corrosion Inhibitor
1. Abstract
Vanconol® RF-401 is a high-efficiency corrosion inhibitor specifically designed for refinery systems. It is suitable for working conditions with a temperature < 180℃ and can effectively address low-temperature corrosion issues caused by the HCl-H₂S-H₂O system. Through heteroatoms such as N and metal-philic anchoring groups in the molecule, a monomolecular adsorption film is formed on the metal surface, isolating corrosive media from contact with the metal, slowing down the electrode reaction rate, significantly reducing the equipment corrosion rate, extending equipment service life, ensuring stable operation of refinery units, and lowering safety risks and production costs.
2. Core Product Information
Item Name | Technical Indicators (RF-401) | Test Method |
Appearance | Pale yellow transparent liquid | Visual inspection |
Density (d₂₀) (g/cm³) | 0.90-1.10 | GB/T 13378 |
Kinematic Viscosity (mm²/s) | ≤80 (40℃) | GB/T 265 |
Pour Point (℃) | ≤-10 | GB/T 510 |
Corrosion Inhibition Rate (%) | ≥90% | Static Weight Loss Method |
Note: Corrosion inhibition rate test standard Q/SHCG 110—2017 |
3. Main Features and Advantages
Strong Targeting: Specifically designed for low-temperature corrosion scenarios in refineries, accurately addressing uniform corrosion, pitting corrosion and other issues caused by the HCl-H₂S-H₂O system, especially suitable for severe corrosion areas such as two-phase transition zones.
Efficient Protection: Molecules are quickly adsorbed on the metal surface to form coordinate bonds, constructing a dense monomolecular adsorption film, which double blocks the contact of corrosive media and the diffusion of H ions, ensuring stable corrosion inhibition effect.
Wide Applicability: Suitable for various refinery working conditions such as the overhead system of atmospheric and vacuum distillation units, the reaction effluent system of hydrogenation units, the overhead system of fractionating towers in catalytic cracking units, and circulating water systems.
Flexible Operation: Can be diluted and prepared for use; the dosage can be adjusted according to the content of corrosive media in oil products, and the economic dosage can be determined through laboratory tests to reduce use costs.
4. Application Guide
4.1 Recommended Application Fields
Vanconol® RF-401 Corrosion Inhibitor is particularly suitable for various low-temperature corrosion working conditions in refineries (operating temperature < 180℃). It targets corrosion protection of equipment and pipelines such as overhead circulating heat exchangers, overhead heat exchangers, and air coolers, effectively extending equipment service life, ensuring stable operation of units, and reducing maintenance and safety risks.
4.2 Usage Methods and Recommended Dosage
Pre-operation Preparation: Check if the product packaging is intact and confirm that the product in the barrel is in a molten state (preheat and melt in advance if solidified).
Dilution and Preparation: Taking a 20% concentration injection solution as an example, extract 200kg of this product into a clean mixing tank with stirring, then add 800kg of demineralized water, stir until uniform, and take a sample to observe; it is considered qualified if it is a homogeneous liquid; the dilution ratio can be adjusted according to on-site needs.
Dosage Calculation: The effective dosage of the corrosion inhibitor should not be less than 5ppm, and it should be continuously injected using a metering pump; the specific dosage varies according to the content of corrosive media in oil products. It is recommended to conduct laboratory tests before use to determine the economic dosage.
Usage Monitoring: During use, regularly detect the iron ion content in cooling water to ensure it is < 3ppm, and appropriately adjust the injection amount of the corrosion inhibitor according to the test results.
5. Safety and Storage
Safe Operation: Wear protective gloves and goggles during use to avoid direct contact with skin and eyes. In case of accidental contact, rinse immediately with a large amount of clean water and seek medical help.
Storage Conditions: The product should be stored in a clean, cool and dry warehouse, away from direct sunlight, high temperature and fire sources. During storage and transportation, it is necessary to protect from sunlight, fire, moisture and collision.
Packaging and Shelf Life: The product is packaged in plastic barrels with a net content of 220L per barrel; other packaging can be customized according to user requirements. The shelf life is one year at room temperature. The remaining product after use should be sealed and stored to prevent volatilization.
6. Frequently Asked Questions (FAQ)
Q: Which specific working conditions is RF-401 Corrosion Inhibitor suitable for?
A: RF-401 Corrosion Inhibitor is specifically designed for refinery systems and is suitable for low-temperature corrosion scenarios with an operating temperature < 180℃, including the overhead system of atmospheric and vacuum distillation units, the reaction effluent system of hydrogenation units, the overhead system of fractionating towers in catalytic cracking units, and circulating water systems, especially for environments with HCl-H₂S-H₂O corrosive media.
Q: How to accurately determine the usage amount of RF-401 Corrosion Inhibitor?
A: It is recommended that the initial effective dosage is not less than 5ppm; the specific dosage needs to be determined through laboratory tests according to the content of corrosive media in oil products. During use, it is necessary to monitor the iron ion content in cooling water (which should be < 3ppm) and appropriately adjust the injection amount accordingly to ensure the corrosion inhibition effect and economy.
7. Contact Us and Information Acquisition
For more detailed information, technical support or sample application of Vanconol® RF-401 Refinery Tower Top Corrosion Inhibitor, please contact our customer representative. We will wholeheartedly provide you with professional consultation and solutions.
Contact: Cary Lee
Email: cary.lee@surfychem.com
Mobile: +86 18526487936
