High Capacity Liquid Asphalt Storage Tank System - Reliable China Suppliers & Factory for Road Construction Solutions
Product Description
A liquid asphalt storage tank is a sealed steel tank used for long-term, large-capacity storage of high-temperature liquid asphalt. It is the core equipment for material storage, thermal insulation, and transfer in asphalt mixing plants, modified asphalt production lines, waterproofing membrane manufacturing, and the carbon industry, providing a stable source of asphalt for the entire production system.
Main Classification
By Structure
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Horizontal asphalt storage tank: Most commonly used, standard for job sites/asphalt mixing plants. Capacity 5–100 tons, movable, fast installation, small footprint.
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Vertical asphalt storage tank: Large fixed storage tank, capacity 100–5,000 tons, used for asphalt depots and large mixing plants, high storage capacity.
By Heating Method
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Thermal oil circulation heating (most recommended): Thermal oil coils arranged inside the tank with an external thermal oil heater. Uniform heating, no asphalt coking or aging, stable temperature control. Industry mainstream.
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Fuel oil/gas direct heating: Fast temperature rise, low cost, suitable for remote job sites. Pay attention to exhaust and explosion protection.
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Electric heating: Used for small tanks, clean with no open flame, suitable for waterproofing and small repair projects.
Core Structure
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Inner tank: Q235B carbon steel, thickness 6–10 mm, resistant to high-temperature asphalt corrosion. Equipped with internal thermal oil coils, localized rapid heating zone, and ultra-low level asphalt extraction port.
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Insulation layer: 100–150 mm high-density rock wool/aluminum silicate, outer layer covered with aluminum sheet cladding. Temperature drop <1°C/h.
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Outer shell: Carbon steel protective cladding, weatherproof (rain and sun protection).
Auxiliary Systems:
- Automatic temperature control (130–160°C)
- Asphalt pump + feed/discharge piping
- Level gauge, pressure gauge, breather valve, manhole
- Optional mixing device to prevent stratification
Key Technical Features
🚀 Localized Rapid Heating
Heats the discharge zone only, energy-saving and protects asphalt quality.
🌡️ Constant Temperature
Maintains fluid state, preventing solidification, carbonization, and degradation.
🌱 Environmental Protection
Closed-loop system with breather valve and fume collection system.
🔄 Continuous Supply
Integrates with asphalt melter for continuous solid-to-liquid discharge.
Common Specifications
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Small job sites: 5t, 10t, 20t horizontal tanks
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Medium mixing plants: 30t, 50t, 80t, 100t horizontal tanks
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Large asphalt depots: 200t–2000t vertical tanks
Operating Principle
1. Hot liquid asphalt is fed into the tank from an asphalt melter or unloading system.
2. The internal coils continuously heat the tank, maintaining the asphalt at a constant temperature in a fluid state.
3. During production, the asphalt pump draws asphalt from the tank bottom, passing it through a filter and heater before delivering it to the process.
4. Impurities settle at the tank bottom and are periodically removed through the drain port.
Difference from Buffer Tank
| Type | Key Characteristics |
|---|---|
| Storage Tank | Large capacity, long-term storage, overall heating, main material storage. |
| Buffer Tank | Small capacity, short-term transfer, pressure stabilization and degassing. |
Frequently Asked Questions
Q1: What is the most recommended heating method for asphalt tanks?
Thermal oil circulation heating is the most recommended. It uses internal coils to provide uniform heating, preventing asphalt coking or aging while maintaining stable temperature control.
Q2: How well does the tank maintain temperature?
Thanks to the 100–150 mm high-density rock wool or aluminum silicate insulation layer, the temperature drop is kept extremely low at less than 1°C per hour.
Q3: What are the typical storage temperatures for liquid asphalt?
Liquid asphalt is typically stored at a constant temperature ranging between 130°C and 160°C to maintain its fluid state for production.
Q4: Can these tanks be moved between different job sites?
Yes, horizontal asphalt storage tanks (typically 5–100 tons) are designed for mobility and fast installation, making them ideal for temporary or moving job sites.
Q5: How does the "localized rapid heat extraction" save energy?
Instead of heating the entire large volume of the tank, this system focuses heat on the discharge zone. This ensures the asphalt is ready for pumping immediately while reducing overall energy consumption.
Q6: Are there environmental protections against asphalt fumes?
Yes, the tanks are equipped with breather valves and fume collection systems to create a closed-loop system that significantly reduces asphalt fume emissions.