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Hot-dip galvanizing is an extremely common industrial method. The galvanized steel parts can not be corroded for a long time, and the aesthetics are also greatly improved. In the process of galvanizing, it is necessary to put the parts to be plated into a container with a high-temperature heated zinc solution for galvanizing. Therefore, the temperature of the galvanized combustion chamber is very high. However, in the current galvanized production, most of the heat discharged from the galvanized combustion chamber is directly discharged through the flue, resulting in a high temperature at the entrance of the chimney, which is measured to be at least 50 ( TC-600TC, a considerable amount of heat is wasted by direct discharge.

The purpose of the utility model is to provide a heat recovery system that fully utilizes energy in view of the serious waste of energy in the existing galvanizing system. The new technical scheme is a heat recovery system of a galvanizing production line, the heat recovery system includes a flue connected to a galvanizing combustion chamber and a heat preservation chamber, and the heat preservation chambers are respectively arranged in the galvanizing system for pickling The outside of the device, the water washing device, the sewage treatment device and the plating aid device, the heat preservation chamber is connected with the galvanizing combustion chamber through the flue.

The beneficial effect of the utility model is that the utility model is provided with a heat preservation chamber on the outside of the pickling device, the water washing device, the sewage treatment device and the plating aid device. The waste heat directly discharged from the chamber is transferred to the greenhouse through the flue to increase the temperature of the above-mentioned various devices to achieve a better galvanizing effect, making full use of the heat in the galvanizing process and saving energy. There is a smoke volume adjustment device, which controls the temperature in the device by adjusting the amount of smoke entering the above-mentioned various devices. The heat preservation chamber and the outside of the flue are provided with a heat insulation layer, which reduces the loss of heat during the transfer process. After utilizing the waste heat through this system, the temperature at the entrance of the chimney has changed from the original 500°C-600°C to about 200°C now, and most of the thermal energy is fully utilized, which saves energy and reduces air pollution.

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