Industrial Hot Air Furnace
Product Overview
The industrial hot air furnace is an efficient heat source equipment dedicated to drying systems, designed for various material drying scenarios. Adopting an indirect heat exchange structure, it converts the heat generated by the combustion of gas, oil or biomass fuel into clean hot air through a high-efficiency heat exchange system, providing stable and continuous high-temperature heat directly for rotary dryers, mesh belt dryers, drying rooms and other equipment. The cylinder is made of high-quality carbon steel with built-in enhanced heat exchange components, featuring high thermal efficiency and stable operation. Models with different temperatures and air volumes can be customized as required. It is widely used in grain, chemical, building materials, food, mining and other industries, adapting to various working conditions such as grain drying, sludge drying, mineral powder dewatering and agricultural by-product processing.
Core Technical Parameters
| Parameter Item | Specification Range | Custom Options |
| Rated Thermal Power | 100,000~2,000,000 kcal/h | Customizable according to drying line capacity |
| Hot Air Outlet Temperature | 80℃~350℃ | Recommended range for typical use: 120℃~250℃ |
| Thermal Efficiency | ≥85% | Enhanced heat exchange model up to 92% |
| Fuel Type | Natural gas / LPG / Diesel / Biomass pellets | Adapt to fuel supply conditions in different regions |
| Fan Power | 1.5kW~15kW | Matched according to air volume requirements |
| Cylinder Material | Q235 Carbon Steel / 304 Stainless Steel / Lined with refractory materials | Food-grade / Anti-corrosion / High-temperature resistant customization |
| Working Mode | Continuous operation | Supports intermittent drying conditions |
| Control Mode | Manual control / PLC automatic control | With automatic temperature adjustment and fault alarm |
Performance Reference
| Model | Thermal Power (kcal/h) | Hot Air Volume (m³/h) | Matched Dryer Specification | Applicable Material Type |
| RFL-10 | 100,000 | 1500~2000 | Small rotary dryer Φ1.0×10m | Grain, Chinese medicinal materials, small granular materials |
| RFL-30 | 300,000 | 4000~5000 | Medium rotary dryer Φ1.5×12m | Slime, mineral powder, chemical granules |
| RFL-60 | 600,000 | 8000~10000 | Large rotary dryer Φ2.0×16m | Sand, sludge, agricultural by-products |
| RFL-100 | 1,000,000 | 15000~18000 | Large mesh belt drying line / Drying room | Industrial waste residue, building materials raw materials |
(Note: Data based on natural gas fuel and hot air temperature of 180℃)
Optional Configurations
| Configuration Item | Available Types | Applicable Scenarios |
| Combustion System | Imported burner / Domestic burner | Stable combustion, low nitrogen emission customization |
| Waste Heat Recovery Device | Flue gas waste heat recovery heat exchanger | Reduce fuel consumption and improve thermal efficiency |
| Dust Removal Device | Baghouse dust collector / Cyclone dust collector | Dust treatment for biomass fuel conditions |
| Insulation Layer | Aluminum silicate insulation cotton / Rock wool insulation layer | Reduce cylinder surface temperature and heat loss |
| Safety Devices | Over-temperature alarm / Flameout protection / Pressure relief valve | Safety protection for high-temperature working conditions |
Core Advantages
1.Clean Hot Air Output: Adopting indirect heat exchange design, the combustion flue gas is completely isolated from hot air without secondary pollution, suitable for materials with high cleanliness requirements such as food and grain.
2.High Efficiency & Energy Saving: Built-in enhanced heat exchange structure with thermal efficiency up to 85%, and fuel consumption can be further reduced with waste heat recovery device.
3.Stable & Durable: The cylinder is treated with high-temperature and anti-corrosion treatment, and key components are made of high-quality materials, enabling long-term continuous operation with low maintenance costs.
4.Flexible Adaptation: Supports customization of models with different temperatures, air volumes and fuel types, and can be seamlessly connected with various drying equipment to adapt to various industrial working conditions.