The combustion chamber of the grain drying tower is a very important component. It is responsible for transferring the heat energy generated by fuel combustion to the grain in the drying tower. However, during the combustion process, a certain amount of heat energy is lost, causing the temperature of the combustion chamber to drop. Therefore, reducing the temperature loss in the combustion chamber is one of the keys to improving the energy utilization rate of grain drying towers. Next, I will introduce how to reduce the temperature loss in the combustion chamber from three aspects.

1. Optimize combustion control

The temperature loss in the combustion chamber is often closely related to the control of the combustion process. By optimizing combustion control, the temperature loss in the combustion chamber can be reduced to a minimum.

The first is fuel supply control. The supply of fuel should be adjusted according to the drying needs of the grain to avoid excess or deficiency. Excess fuel will cause part of the fuel to be discharged without complete combustion, resulting in a waste of heat energy; while insufficient fuel will cause the temperature in the combustion chamber to be insufficiently high enough to provide sufficient heat energy.

 Next is the control of gas and suction. The mixing ratio of gas and air should be reasonably adjusted to ensure complete combustion of the fuel. Too much gas will cause too lean combustion in the combustion chamber and reduce the temperature of the combustion chamber; while too little gas will cause too rich combustion in the combustion chamber, causing the temperature of the combustion chamber to rise too quickly and affecting the combustion efficiency.

 It is the oxygen supply control of the combustion chamber. Reasonable control of the oxygen supply in the combustion chamber can promote complete combustion of fuel and reduce heat energy loss. This can usually be achieved by increasing the preheating temperature of the air, adjusting the air intake volume, or using an oxygen sensor.

2. Strengthen the thermal insulation protection of the combustion chamber

Thermal insulation protection of the combustion chamber is another key measure to reduce the temperature loss of the combustion chamber. By increasing the thickness of the thermal insulation layer of the combustion chamber, the loss of heat energy can be reduced.

The first step is to choose the right insulation material. Thermal insulation materials need to have excellent thermal conductivity and high temperature resistance. Currently commonly used thermal insulation materials include high-temperature ceramic fiber, aluminum silicate fiber, rubber foam, etc.

The second is to increase the thickness of the insulation layer. By increasing the thickness of the insulation layer, the conduction and radiation loss of heat energy on the insulation material can be effectively reduced, and the insulation effect of the combustion chamber can be improved.

In addition, a multi-layer insulation structure can also be adopted, that is, multiple layers of insulation layers are provided outside the combustion chamber to further reduce the loss of heat energy.

3. Improve the sealing of the combustion chamber

The sealing of the combustion chamber is directly related to the temperature loss in the combustion chamber. Improving the sealing of the combustion chamber can reduce the leakage of gas and flue gas during the fuel combustion process, thereby reducing the loss of heat energy.

The first is to choose high-quality sealing materials. Sealing materials need to have good high temperature resistance and sealing performance to ensure that they can effectively seal under high temperature conditions.

The second is a reasonably designed sealing structure. By properly setting the sealing position and sealing method, the leakage of heat energy can be effectively prevented. For example, add sealing gaskets at the connection between the combustion chamber and other components, or use sealing elements that can automatically seal.

In addition, regular inspection and maintenance of the sealing structure are also key to maintaining the sealing performance of the combustion chamber. Detect and repair damage in the sealing structure promptly to avoid leakage of heat energy.