Hopper Heater
Hopper Heaters are the unsung heroes of industrial filtration. They are essential for the efficient removal of fly ash from Electrostatic Precipitators (ESP) and bag filter hoppers. Without proper heating, fly ash cools down, absorbs moisture, and turns into a concrete-like sludge that blocks the flow.
Our heaters are specifically designed to solve this problem. By preheating the hopper during critical startup conditions, they ensure that moisture condensate never has a chance to accumulate. During normal operation, they play a crucial role in maintaining the hopper wall and fly ash at temperatures above the flue gas acid dew point. This dual-action protection prevents the formation of corrosive acids, maintaining the integrity of your system and ensuring smooth, uninterrupted operation.
Key Features of Hopper Heater
- Robust Construction: Available in Flexible Silicone Rubber or Metal-Clad (Aluminum/SS) designs to withstand vibration and harsh outdoor environments.
- Uniform Heating: Engineered for low watt density (typically 3 to 5 Watts/sq. inch) to spread heat evenly without creating hot spots that could damage sensitive materials.
- Dew Point Protection: Capable of maintaining temperatures (typically 120°C to 250°C) specifically calculated to prevent acid condensation in flue gas applications.
- Custom Sizing: We manufacture “tailor-made” modules to fit specific hopper geometries, including trapezoidal and rectangular shapes.
- Easy Installation: Designed for quick mounting using eyelets, laces, or pressure plates, ensuring optimal contact with the hopper surface.
- Voltage Options: Standard and custom voltages available (110V, 230V, 415V) to match your plant’s power grid.
Advantages of Hopper Heater
- Eliminates Downtime: By preventing moisture accumulation, these heaters stop “bridging” and “rat-holing” before they start. Therefore, your system runs continuously without manual intervention to clear clogs.
- Protects Equipment: Keeping the hopper walls warm prevents the formation of sulfuric acid (in coal-fired plants). As a result, you significantly extend the lifespan of your hopper walls by reducing corrosion.
- Energy Efficient: Unlike heating the entire air volume, surface heaters transfer energy directly to the metal wall. Thus, you achieve the desired temperature with lower energy consumption.
- Vibration Resistant: Our heaters are built to endure the mechanical shaking and vibration common in ESP and bag filter systems.
- Low Maintenance: Once installed, the rugged design requires virtually no maintenance, providing a “fit and forget” solution.
Uses & Applications of Hopper Heater
- Power Plants: Heating Fly Ash Hoppers in ESPs to prevent ash solidification and acid attack.
- Cement & Steel Industries: Maintaining temperature in dust collectors and silos.
- Food & Pharmaceutical: Preventing condensation in sugar, flour, or powder storage bins.
- Chemical Processing: Viscosity maintenance for thick liquids or resins stored in outdoor tanks/hoppers.
- Pollution Control: Essential for Bag Filter Houses to prevent wet bags and blinding.
