详情描述

As environmental quality standards rise, converting coal-fired furnaces to gas-fired ones has become one of the directions for controlling combustion pollution. In recent years, our company has undertaken numerous coal-to-gas hot air furnace projects, gaining mature experience in furnace conversions. We can provide reasonable coal-to-gas hot air furnace solutions according to customer needs, and offer one-stop services including production, installation, and follow-up.

Direct-fired gas hot air furnace

Primarily composed of valve components, burners, combustion chambers, secondary air distribution, and control systems.

Through the valve component, the burner nozzle is fully mixed with air for combustion, and a clean, high-temperature flame is directly sprayed into the combustion chamber for complete combustion, producing clean high-temperature flue gas at about 1000°C. This high-temperature flue gas is then re-aerated to adjust to the required heat air temperature for production. The heated air is channeled through heat air ducts into drying equipment (such as ovens, furnaces, drum dryers, belt dryers, and fluidized bed dryers) to dry the material.

Hot air cleaning, high thermal efficiency, low auxiliary equipment, low investment cost, and good operating environment; easy to operate, with manual/automatic control; features automatic ignition, load adjustment, flame detection, and alarm function.

2. Indirect heat exchange gas hot air furnace

Primarily composed of the combustion system, heat exchange system, control system, and exhaust system.

The burner generates high-temperature flue gas by combustion, which heats the heat exchanger system. The heated air is then blown into the drying system by a blower. The thermal efficiency can reach 92%. When the hot air temperature in the drying system reaches the rated upper limit, the burner automatically stops combustion or switches to a low flame. When the hot air temperature drops to the rated lower limit, the burner will reignite and operate or switch to a high flame to increase the temperature, and the rate of temperature increase can also be adjusted by regulating the inlet valve.

High heat exchange temperature, high thermal efficiency, compact size, stable hot air temperature, long lifespan, and low maintenance costs.