Low-temperature waste heat recovery system for drying box

Abstract

The invention discloses a low-temperature waste heat recovery system for a drying box, belongs to the field of waste heat recovery, and solves the problems of environmental pollution and energy waste caused by direct emission of drying gas of an existing kaolin drying box. The low-temperature waste heat recovery system comprises a waste heat recoverer and a controller, the waste heat recoverer comprises a heat exchange box and a recovery box, the heat exchange box is installed in the recovery box, an air inlet of the heat exchange box is connected with an air outlet of the drying box through a pipeline, an air inlet pipe is arranged at the top of one side of the recovery box, the bottom of the other side of the recovery box is connected with a combustion chamber through a pipeline, an exhaust fan is arranged on the pipeline between the combustion chamber and the recovery box, a temperature sensor is arranged in the recovery box, and the temperature sensor and the exhaust fan are both electrically connected with the controller. According to the waste heat recovery system, the waste heat recovery utilization rate can be effectively increased, the production cost of an enterprise is further reduced, and environment-friendly emission is guaranteed.

Description

technical field [0001] The invention relates to waste heat recovery, more specifically, it relates to a low-temperature waste heat recovery system of a drying box. Background technique [0002] During the processing of kaolin, it generally needs to go through a drying process. At present, the drying of kaolin is usually carried out by using a drying box. The kaolin is put into the drying box, and then the high-temperature gas generated by the combustion of gas in the combustion chamber is passed into the drying box for drying processing. During the drying process, a large amount of high-temperature gas will be discharged. If the high-temperature gas is not cooled in time, it will not only easily cause air pollution, but also waste a lot of heat energy. Therefore, some existing drying boxes are usually equipped with waste heat recovery systems. The heat of high temperature gas is recovered and reused. However, the structure of the existing low-temperature waste heat system ...

AI Technical Summary

Problems solved by technology

During the drying process, a large amount of high-temperature gas will be discharged. If the high-temperature gas is not cooled in time, it will not only easily cause air pollution, but also waste a lot of heat energy. Therefore, some existing drying boxes are usually equipped with waste heat recovery systems. Recover and reuse the heat of high temperature gas

However, the structure of the existing low-temperature waste heat system of the drying box is relatively simple, resulting in poor waste heat recovery effect and low reuse rate after waste heat recovery, which is not conducive to the rapid development of enterprises

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