Energy-saving high-temperature flue gas hot air furnace

Energy-saving high-temperature flue gas hot air furnace

Structural composition:

• Combustion device:

It is the core part of producing high-temperature flue gas. For coal-fired energy-saving high-temperature flue gas hot air furnace, there are grates, coal feeding devices, etc. to ensure that the coal can burn stably; gas-fired ones have gas nozzles, ignition devices, etc. to ensure the full combustion of gas. Different fuel types have different structures and working principles of their combustion devices, but the purpose is to efficiently produce high-temperature flue gas.

• Heat exchange device:

It is usually composed of high-temperature resistant heat exchange tubes or heat exchange plates. High-temperature flue gas transfers heat to the air through the heat exchange device, so that the air is heated. The design and material selection of the heat exchange device are very critical and directly affect the efficiency of heat exchange and the service life of the equipment.

• Blowing device:

It includes equipment such as blowers, which are responsible for sucking cold air into the hot air furnace and providing sufficient pressure to make the air flow in the furnace and fully contact with the heat exchange device, so that it is heated into high-temperature hot air.

• Smoke exhaust system:

 It is used to exhaust the smoke after combustion, generally including flues, chimneys and other parts. The design of the smoke exhaust system must ensure that the smoke can be discharged smoothly while minimizing heat loss.

• Control system:

 It is composed of temperature sensors, controllers, etc., which can monitor the operating parameters of the hot blast furnace in real time, such as temperature, pressure, etc., and automatically adjust the fuel supply, blast volume, etc. according to the set parameters to ensure the stable operation and high efficiency and energy saving of the hot blast furnace.

• Working principle:

Depending on the fuel, the working principle of the energy-saving high-temperature flue gas hot blast furnace is slightly different. Taking coal as an example, coal burns in the combustion device to produce high-temperature flue gas. The blast device blows cold air into the hot blast furnace. When the cold air passes through the heat exchange device, it exchanges heat with the high-temperature flue gas. After absorbing heat, it is heated into high-temperature hot air, and then discharged from the hot air outlet. It can be used for various equipment or processes that require high-temperature hot air. The flue gas after combustion is discharged from the hot blast furnace through the exhaust system.

Advantages and characteristics:

Energy saving:

• Efficient heat exchange:

The use of advanced heat exchange technology and structural design makes the heat exchange between high-temperature flue gas and cold air more sufficient, improves the utilization rate of heat, and reduces heat waste. For example, some hot blast furnaces use multi-layer heat exchange tubes or heat exchange plates of special shapes to increase the heat exchange area and improve the heat exchange efficiency.

• Precise temperature control:

Equipped with an intelligent control system, it can accurately control the temperature of the hot air according to actual needs, avoiding energy waste caused by too high or too low temperature. When the hot air temperature reaches the set value, the control system will automatically adjust the fuel supply and blast volume to keep the hot air temperature stable.

• Strong fuel adaptability:

It can adapt to a variety of fuels, such as coal, natural gas, biomass pellets, etc. Users can choose the right fuel according to local fuel resources and prices, reduce fuel costs, and improve the economy of energy utilization.

High temperature performance:

• Output high temperature hot air:

It can output hot air at a higher temperature to meet the needs of various high temperature processes, such as high temperature drying, high temperature baking, high temperature calcination, etc. Its output temperature can be adjusted according to different models and specifications, generally between several hundred degrees Celsius and thousands of degrees Celsius.

• Good temperature stability:

During operation, it can maintain the stability of the hot air temperature, avoiding the impact of temperature fluctuations on the production process. This is of great significance for some production processes with high temperature requirements, such as the drying of medicines and foods.

Other advantages:

• Good environmental performance:

By optimizing the combustion process and equipping corresponding environmental protection equipment, such as dust collectors, desulfurization and denitrification devices, etc., the emission of pollutants is reduced, which meets the national environmental protection requirements. After the flue gas generated during the combustion process is treated, the concentration of pollutants such as smoke, sulfur dioxide, and nitrogen oxides emitted is low, and the impact on the environment is small.

• Safe and reliable operation:

It has complete safety protection devices, such as temperature sensors, pressure sensors, safety valves, etc., which can monitor the operating status of the equipment in real time. When abnormal conditions occur, it automatically alarms and takes corresponding protective measures to ensure the safe operation of the equipment.

• Small equipment footprint:

The structure is compact and the footprint is small, which is suitable for installation in places with limited space. Compared with traditional heating equipment such as steam boilers, energy-saving high-temperature flue gas hot air furnaces do not require large boiler rooms and complex piping systems, and are more convenient to install and maintain.

• Long service life:

It adopts high-quality materials and advanced manufacturing processes, has good high temperature resistance and corrosion resistance, can operate stably for a long time in harsh working environments, and has a long service life. At the same time, the maintenance cost of the equipment is low, which reduces the user's later investment.