Waste heat recovery device for drying room and temperature control method thereof

Abstract

The invention discloses a waste heat recovery device for a drying room and a temperature control method thereof. The waste heat recovery device comprises a box body and a heat exchanging system, wherein the heat exchanging system is combined with the box body through a heat exchanging combination part; cold air is pumped into the heat exchanging system, and waste gas heat flowing into the box body is absorbed by adopting a heat exchanging principle. The waste heat recovery device is simple in structure and can realize recovery utilization of the waste heat and energy conservation and environment protection; after the waste gas passes through the waste heat recovery device, the temperature of the pipe wall is reduced, heat radiation of the waste gas exhaust system temperature to air is reduced, and comprehensive energy conservation can reach about 20%; according to the device and the method, discharged waste heat gas and cold air temperature before and after heating can be in real time detected and controlled, the waste gas heat in the drying room can be as much as possible recycled, requirements of the exhaust gas temperature can be met, and the heat recycling efficiency can be effectively increased.

Description

technical field [0001] The invention relates to a heat energy recovery device, in particular to a drying room waste heat recovery device and a temperature control method thereof. Background technique [0002] At present, in the entire field of baking in the baking room, almost all baking equipment uses the low humidity and low temperature air outside the baking equipment to directly exchange the high humidity and high temperature moisture inside the equipment to bake the materials in the equipment. , Dehumidification. Although this technology can achieve the effect of dehumidification, in the process of dehumidification, because the dehumidification exhaust gas contains a lot of heat, it cannot be recycled, and a large amount of heat energy is lost in the air outside the equipment, resulting in a large waste of energy. The heat energy has not been effectively used, resulting in a large energy consumption in the drying room during the baking operation. [0003] The large am...

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Problems solved by technology

Although this technology can achieve the effect of dehumidification, in the process of dehumidification, because the dehumidification exhaust gas contains a lot of heat, it cannot be recycled, and a large amount of heat energy is lost in the air outside the equipment, resulting in a large waste of energy. The heat energy has not been effectively used, resulting in a large energy consumption in the drying room during the baking operation

[0003] The large amount of waste heat and moisture discharged from the drying room during the baking operation not only wastes heat energy, but also when the exhaust gas temperature is too high, it will increase the temperature of the exhaust pipe wall, increase the heat radiation of the exhaust system to the surrounding environment, and have a greater impact on the environment ; In the prior art, when utilizing the principle of heat exchange to recycle waste heat from waste gas, the monitoring of the temperature before and after heating of the discharged waste heat gas and cold air is not considered. If it increases, it is easy to cause sticking and condensation, which will also affect the efficiency of the drying room and the operation of the waste heat recovery device

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