Boiler afterheat recovering device

Abstract

The invention relates to a boiler waste-heat recovery device, comprising a transverse partition (6), a vertical partition (2) and a wall body (1). The inner cavity is divided into three independent spaces by the inner wall of the wall body (1); the first space is a hot air channel (7) communicated with an air outlet (14); the second space is a heat exchange chamber (12) which is communicated with a smoke inlet (5) and a smoke outlet (11); the third space is an air chamber (8) which is communicated with an air inlet (9); a plurality of heat collecting pipes (13) are arranged in the heat exchange chamber (12); the air inlet ends of the heat collecting pipes (13) are put into the air chamber (8); the air outlets of the heat collecting pipes (13) are put into the hot air channel (7). The air is heated by the heat of the flue gas discharged from the boiler during combustion, and then the hot air is transported back into the combustion chamber of the boiler for reutilization, thereby, the fuel cost can be reduced by about 70 percent. The temperature of flue gas discharge is reduced from the original 330 DEG to less than 100 DEG.

Description

technical field [0001] The invention relates to a boiler waste heat recovery and utilization device. Background technique [0002] At present, regardless of coal-fired boilers, gas-fired boilers or oil-fired boilers, there is a problem of low thermal efficiency. One of the important reasons is that a large amount of heat energy is wasted as the flue gas is discharged into the atmosphere. With the increasingly prominent problem of global energy shortage, this issue has received more and more attention and attention. On the one hand, this waste of energy directly leads to high heating costs. On the other hand, high-temperature flue gas carries a large amount of heat and dust into the atmosphere, causing environmental pollution and rising atmospheric temperature. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a boiler waste heat recovery device, which can reduce fuel cost, improve heat utilization rate and reduce...

AI Technical Summary

Problems solved by technology

On the one hand, this energy waste directly leads to high heating costs. On the other hand, high-temperature flue gas carries a large amount of heat and dust into the atmosphere, causing environmental pollution and rising atmospheric temperature.

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