Heavy Alkylate (Ha)

Heavy Alkylate (HA) is a premium hydrocarbon stream derived from alkylation units where light olefins (such as propylene, butylene) react with isoparaffins (mainly isobutane) in the presence of strong acid catalysts like sulfuric or hydrofluoric acid. While lighter alkylate fractions are widely used in gasoline blending due to their high octane number, the heavier fractionknown as Heavy Alkylatecontains higher molecular weight hydrocarbons (C9C16 range).

This fraction is characterized by low sulfur, low olefin content, and a high degree of branching, which gives it excellent stability, low reactivity, and good solvency properties. Due to these attributes, Heavy Alkylate is often utilized beyond fuels, especially in specialty chemical applications.

Key Specifications (Typical Range)

Applications

1. Solvent Industry

• Used as a high-purity hydrocarbon solvent
• Ideal for paints, coatings, and adhesives due to low sulfur and odor

2. Lubricant Blending

• Acts as a base oil component or diluent
• Provides thermal stability and oxidation resistance

3. Petrochemical Feedstock

• Feedstock for further refining or cracking processes
• Used in production of specialty hydrocarbons

4. Industrial Cleaning Fluids

• Effective degreasing and cleaning agent
• Low reactivity makes it safe for sensitive equipment

5. Fuel Blending (Limited Use)

• Can be blended into diesel or heavy fuels
• Enhances combustion stability

Function

• Diluent: Reduces viscosity in formulations
• Carrier Fluid: Transports active ingredients in industrial mixtures
• Solvent Medium: Dissolves non-polar substances efficiently
• Stabilizer: Improves storage stability of blends
• Processing Aid: Enhances flow and handling characteristics

Benefits

• Low Sulfur Content Environmentally safer, reduced emissions
• High Chemical Stability Long shelf life, minimal degradation
• Low Odor Suitable for indoor and consumer applications
• Excellent Solvency Power Effective in dissolving oils and greases
• Low Olefin Content Reduced gum formation and oxidation
• Versatility Applicable across multiple industries
• Good Safety Profile Higher flash point compared to lighter hydrocarbons