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HLN-127 Neutralizing Corrosion Inhibitor for Atmospheric and Vacuum Distillation Units
Oil Refining Auxiliary

HLN-127 Neutralizing Corrosion Inhibitor for Atmospheric and Vacuum Distillation Units

HLN-127 is a high-performance neutralizing corrosion inhibitor specifically designed for use in atmospheric and vacuum distillation units. It effectively mitigates corrosion caused by acidic substances such as HCl and H2S, as well as scale corrosion due to ammonium chloride (NH4Cl) and iron sulfide (FeS). This product combines organic amines, amphoteric imidazolines, gas-phase corrosion inhibitors, anti-emulsifiers, and dispersants, providing comprehensive protection for critical equipment in refining processes.

    Product Features

    • pH Control: Maintains the pH of condensed water within 5.5 to 6.0, balancing acid corrosion and under-scale corrosion caused by NH4Cl and FeS.
    • Efficient Performance: Reduces agent consumption by over 20% compared to similar products, achieving a corrosion inhibition rate of ≥90%.
    • Anti-Emulsification: Minimizes the tendency of condensed water to form emulsions, lowering oil content and COD in the water phase.
    • Environmentally Safe: Free of metals and harmful elements, ensuring no adverse effects on downstream processing units or wastewater treatment systems.

    Technical Specifications

    Parameter

    Technical Indicators

    Test Method

    Appearance

    Brown liquid

    Visual Inspection

    Solubility

    Miscible with water in any ratio

    Visual Inspection

    Density (20℃, kg/m³)

    950~1050

    GB/T 13377

    Freezing Point (℃)

    ≤-20

    GB/T 510

    Kinematic Viscosity (40℃, mm²/s)

    ≤20

    GB/T 265

    pH (10% aqueous solution)

    ≥11.0

    SH/T 0069

    Corrosion Inhibition Rate (%)

    ≥90

    Q/SHCG109-2017Appendix A

    Water Content (%)

    Reported Value

    SH/T 0246

    Applications

    • Corrosion Control: Protects against HCl-H2S-H2O corrosion in overhead condensing cooling systems of atmospheric and vacuum distillation units.
    • Scale Mitigation: Prevents ammonium chloride (NH4Cl) and iron sulfide (FeS) scaling, avoiding secondary corrosion and ensuring equipment longevity.

    Usage Instructions

    1. **Preparation:** Pump the product into a corrosion inhibitor storage tank and dilute with demineralized or deoxygenated water to the required concentration.
    2. **Injection Points:** Use a metering pump to inject the inhibitor before the water injection point on the evaporation line at the top of the distillation column, ideally close to the dew point.
    3. **Dosage:** Adjust injection rates to maintain the pH of condensate between 5.5 and 8.0. Typical dosage: 10-40ppm (relative to crude oil). Initial doses may be increased to establish adsorption equilibrium.
    4. **Custom Adjustment:** Modify injection rates based on crude oil properties (organic chlorine and sulfur content), condensate chloride ion levels, and corrosion monitoring data.

    Performance Guarantee

    • Maintains iron ion concentration in condensed water at critical points (e.g., primary distillation tower, atmospheric tower, and vacuum tower tops) is ≤3mg/L.
    • Does not cause emulsification or affect oil-water separation, device stability, or product quality.
    • No adverse effects on downstream processing units or wastewater treatment systems.
    • Recommended Dosage: Based on crude oil properties, the following table provides guidance on neutralizer injection rates.

    Recommended Dosage Table

    Organic Chlorine Content (mg/L)

    Sulfur Content (wt%)

    Recommended Injection Rate (μg/g)

    ≤10

    ≤1.0

    10-20

    ≤10

    1.0-2.0

    15-25

    ≤10

    ≥2.0

    20-30

    10-30

    ≤1.0

    15-25

    10-30

    1.0-2.0

    20-30

    10-30

    ≥2.0

    25-35

    ≥30

    ≤1.0

    20-30

    ≥30

    1.0-2.0

    25-35

    ≥30

    ≥2.0

    30-40

    Packaging, Storage, and Safety

    • Packaging: Available in 25L plastic drums, 200L iron or plastic drums, or IBC ton barrels.
    • Storage: Store in a cool, dry, and ventilated area at room temperature. Shelf life: 2 years.
    • Safety: Keep away from fire sources. Refer to the Material Safety Data Sheet (MSDS) for additional safety information.