The working principle of the indirect gas hot blast stove and the superiority of the product

The indirect gas-fired hot blast stove is mainly suitable for drying materials that are not allowed to be polluted, or for drying heat-sensitive materials with low temperature
.

Such as: milk powder, pharmaceuticals, synthetic resins, fine chemicals,
etc.

This kind of heating device uses steam, heat transfer oil, flue gas, etc.
as the carrier to heat the air through various forms of heat exchangers
.

The working principle of the indirect gas-fired hot blast stove: The combustion chamber of the hot blast stove is integrated with the heat exchanger, and adopts an all-steel multi-layer sleeve structure.
and flue gas are double return, each way for heat exchange
.

In order to improve the thermal efficiency, the multi-head helical grooved heat exchange technology and the turbulent flow principle are adopted to reduce the thickness of the laminar flow, so that the air and flue gas continuously change the direction of rotation during travel, which greatly enhances the heat exchange effect
.

The main working process is: light oil (gas) burns in the combustion chamber to generate high-temperature flue gas, which enters the smoke ring under the action of the burner, exchanges heat with the outside air, and is discharged from the chimney through the flue, and the cold air is blown in by the blower.
The shell of the hot blast furnace flows into the air ring outside the furnace through the top of the furnace, and the equipment that needs clean hot air is supplied by the hot air outlet pipe
.

Advantages of indirect gas-fired hot blast stove products: It adopts a split structure with the heat exchanger, and the layout is flexible, which is suitable for the development of large-scale development
.

The furnace is made of heat-resistant stainless steel to ensure the service life of the product
.

 　　The heat exchanger adopts the tubular type, the heat exchange area is sufficient, the exhaust gas temperature is low, the thermal efficiency is as high as 90%, and the energy saving effect is obvious
.

 　　According to different hot air temperature requirements, different heat exchange tube types and different materials are used, and the hot air temperature can reach 550 ℃
.

 　　The blower adopts the frequency conversion control method, which can realize the stepless adjustment of the air volume
.

 　　The output load adopts the proportional transfer mode, takes the hot air temperature as the target parameter, tracks the target parameter through the proportional regulator, automatically controls the size of the combustion load, and is infinitely close to the target parameter
.

 　　The imported burner is selected, which has the functions of automatic ignition and flameout protection, which is safe and reliable, and has a very high degree of automation
.

 　　The flue gas recirculation technology is adopted, and the tail exhaust flue gas is fully utilized to participate in the temperature adjustment of the flue gas, which protects the heat exchanger on the one hand, and saves a lot of energy on the other hand
.