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Liquid Asphalt Buffer Tank with Level Control - China Suppliers & Factory for Asphalt Storage Solutions

The liquid asphalt buffer tank, also referred to as the asphalt buffer tank or asphalt intermediate tank, is an essential component in the asphalt melting, transportation, and production system. This tank is designed for reliable intermediate storage, ensuring a stabilized flow rate and maintaining optimal pressure levels. It provides superior insulation storage, effectively eliminates pulsations and bubbles, and guarantees a continuous and stable supply to downstream processes. As a leading manufacturer in China, our factory specializes in producing high-quality asphalt buffer tanks, making us preferred suppliers for businesses in need of efficient and durable asphalt storage solutions

    Product Description

    The liquid asphalt buffer tank (also known as asphalt buffer tank or asphalt intermediate tank) is a crucial intermediate storage tank in the asphalt melting, transportation and production system. It is mainly used to stabilize the flow rate, maintain pressure, provide insulation storage, eliminate pulsations and bubbles, and ensure continuous and stable supply to the downstream.

    Liquid Asphalt Buffer Tank View 1
    Liquid Asphalt Buffer Tank View 2

    Core Function

    Flow Stabilization

    Absorbing fluctuations and pressure pulses from the upstream (such as the melting unit, pump), and avoiding impacts on the downstream (such as metering, spraying, stirring).

    Thermal Insulation

    Short-term storage of high-temperature liquid asphalt (approximately 150–180°C), maintaining fluidity through advanced insulation.

    Quality Improvement

    Gas removal and impurity separation: During the asphalt's stay in the tank, bubbles rise and impurities settle, improving asphalt quality.

    Safe Transition

    During the start-up/shutdown or maintenance of equipment, providing uninterrupted supply and reducing system startup frequency.

    Typical Structure (Standard Design)

    Tank body: Vertical cylinder + bottom conical bottom, carbon steel material.
    Heating and insulation: Built-in heat transfer oil coils / steam coils, outer insulation layer (rock wool, polyurethane).
    Top Components: Feed inlet, flue gas outlet, exhaust, manhole.
    Middle lower part: Discharge outlet (pump suction inlet).
    Bottom: Sewage outlet (sludge discharge).
    Attachments: Liquid level gauge, thermometer, differential pressure gauge, overflow port.

    Working Principle

    High-temperature liquid asphalt enters the tank from the top / side.
    It stays at a low speed in the tank (for several minutes to half an hour), with bubbles escaping and impurities settling.
    The built-in heating tubes maintain insulation and maintain the asphalt temperature and viscosity.
    The bottom discharge outlet is stabilized and transported to the next process by the pump.
    The asphalt flue gas is centrally led to the purification system.

    Application Scenarios

    Carbon / Anode Production

    Asphalt melting system → buffer tank → liquid asphalt storage tank → impregnation / mixing.

    Road Asphalt Mixing Station

    Asphalt tank → buffer tank (bucket) → metering → spraying and mixing.

    Asphalt Loading / Transportation

    The buffer tank stabilizes the flow, reducing the pulsation during loading and the splashing of flue gas.

    Differences from "Asphalt Storage Tank"

    Buffer Tank Small capacity (1–20 m³), short stay, strong insulation, gas removal and pressure stabilization, intermediate link. Storage Tank Large capacity (several - several thousand m³), long-term storage, main storage material.

    Frequently Asked Questions

    What is the primary role of a buffer tank in asphalt production?
    Its primary role is to act as an intermediate stabilizer that balances the flow and pressure between the melting unit and the downstream processing equipment, ensuring a continuous supply.
    What temperature range can these tanks maintain?
    They are designed to maintain high-temperature liquid asphalt typically between 150°C and 180°C to ensure optimal fluidity for processing.
    How does the tank improve asphalt quality?
    By allowing the asphalt to stay in the tank at a low speed, it facilitates the escape of air bubbles and allows heavier impurities to settle at the bottom for discharge.
    What heating methods are available for these tanks?
    Standard designs usually incorporate built-in heat transfer oil coils or steam coils, protected by high-efficiency rock wool or polyurethane insulation layers.
    Is the tank compatible with automated systems?
    Yes, they are equipped with various attachments like liquid level gauges, thermometers, and differential pressure gauges that can be integrated into automated control systems.
    Why is a conical bottom used in the design?
    The conical bottom facilitates the efficient discharge of sludge and impurities through the sewage outlet located at the lowest point.