Exhaust gas heat recovery heating furnace with built-in preheating chamber

Abstract

The invention provides an exhaust gas heat recovery heating furnace with a built-in preheating chamber, and belongs to the technical field of heat exchange. In a traditional flame heating furnace, a heat exchanger needs to be independently arranged, and the fabrication process is complicated. According to the exhaust gas heat recovery heating furnace, the inner cavity of a furnace body is divided into a left area and a right area; the preheating chamber is arranged in the left area; a flame heating chamber is arranged in the right area; high-temperature exhaust gas in the furnace is introduced into the preheating chamber which is integrally molded with the flame heating furnace; on one hand, the high-temperature exhaust gas in the preheating chamber is used for heating combustion-supporting air, so that the combustion temperature of the flame is increased; on the other hand, blanks which continuously enter a blank guide rail are heated by the high-temperature exhaust gas for enough time, and reach relatively high temperature when being heated by the flame, so that energy consumption when the blanks are heated is greatly reduced. Therefore, the effect of returning the exhaust gas to the furnace for re-combustion is achieved; exhaust gas emission is reduced; the environment is protected; the exhaust gas heat recovery heating furnace has the advantages of energy conversion, time saving, high work efficiency and the like.

Description

technical field [0001] The invention relates to a heat recovery device in high-temperature waste gas in a furnace, in particular to a segmented composite heat absorption device, which belongs to the technical field of heat exchange. Background technique [0002] The waste gas discharged from the known flame heating furnace is directly discharged into the chimney, and a large amount of available heat energy is lost to the atmosphere, resulting in waste of energy and low utilization rate of resources. The exhaust gas recycling system of the heat treatment furnace mentioned in Chinese patent ZL200720040084.7 requires a separate heat exchanger to heat the air sucked into the suction port, which has a certain effect of saving gas, but the manufacturing process is relatively complicated. Another example is the heat storage hot water tank disclosed in Chinese patent ZL200720187888.X, which utilizes the waste heat of the chimney. Although it can use the waste heat of the chimney...

AI Technical Summary

Problems solved by technology

[0002] The exhaust gas discharged from the known flame heating furnace is directly discharged into the chimney, and a large amount of available heat energy is lost to the atmosphere, resulting in energy waste and low resource utilization

The exhaust gas recycling system of the heat treatment furnace mentioned in the Chinese patent ZL200720040084.7 requires a separate heat exchanger to heat the air sucked into the suction port, which has a certain effect of saving gas, but the manufacturing process is relatively complicated.

Another example is the heat storage hot water tank disclosed in Chinese patent ZL200720187888.X, which utilizes the waste heat of chimneys. Although it can use the waste heat of chimneys to supply hot water for family daily life, it has not achieved the purpose of reducing exhaust emissions and protecting the environment.

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