Direct-fired hot blast stove

Direct-fired hot blast stove

The direct-fired hot-blast stove is a device that generates hot air through the direct combustion of fuel, featuring high efficiency and energy saving, and is widely used in multiple fields. The direct-fired stove designed and manufactured by our company has obtained national patents. The following is its detailed information:

working principle

Fuel combustion: Fuel is burned in a combustion device, producing high-temperature combustion gases.

Mixing and heating: High-temperature combustion gases mix with external air to form hot air at the desired temperature.

Material contact: Hot air directly contacts the material being dried, heating and evaporating moisture to achieve drying or baking.

Applicable fuel

Solid fuels: such as coal and coke.

Liquid fuel: such as diesel, heavy oil, and alcohol-based fuel.

Gaseous fuels: such as coal gas, natural gas, and liquefied gas.

feature

High efficiency and energy saving: High thermal efficiency, with fuel consumption reduced by about half compared to steam or indirect heaters.

Direct heating: Hot air comes into direct contact with the material, resulting in fast heating.

Compact structure: No need for complex heat exchangers.

Temperature control: Precise temperature control can be achieved by adjusting the fuel supply and air mixing ratio.

Application field

Industrial drying: such as grain, food, chemicals, building materials, etc.

Industrial heating: such as metal heat treatment, paint baking, etc.

Agricultural drying: such as seeds, feed, fertilizers, etc.

Other fields: such as waste gas/wastewater treatment, SCR denitration heating, etc.

Precautions

Fuel selection: Choose the appropriate fuel based on actual needs and costs.

Equipment maintenance: Regularly inspect the combustion device and ventilation system to ensure safe operation.

Environmental protection requirements: Select equipment that meets environmental standards to reduce pollutant emissions.

Applicable materials: Ensure that the materials are suitable for direct contact with hot air to avoid contamination or damage.

Special Note:

Our company's equipment features a multi-layered, sleeve-type, pure metal structure, free of refractory materials, and adopts a single cantilever design. This design eliminates issues such as cracking and detachment caused by differential thermal expansion and contraction due to varying material expansion coefficients found in traditional equipment. The material used in the high-temperature zone is high-temperature resistant stainless steel (such as 310S), ensuring a long service life. The thermal efficiency is no less than 95%.