Flue gas heat exchanger with additional combustion boiler

Abstract

The invention provides a flue gas heat exchanger with an additional combustion boiler and belongs to the technical field of heat exchange equipment. The flue gas heat exchanger with the additional combustion boiler comprises a shell, one end of the shell is arranged to be a flue gas heat exchange channel, the other end is arranged to be an additional combustion chamber with the additional combustion boiler, a partition plate is arranged between the flue gas heat exchange channel and the additional combustion chamber, and the wall body of the shell is provided with heat exchange fins. The additional combustion boiler communicates with a traditional flue gas heat exchange channel, and in the conditions that the flue gas supply is sufficient and duration is long, heat exchange is performed directly through the flue gas heat exchange channel; in the condition that the flue gas supply is insufficient or duration is short, direct heating is performed through combustion of the additional combustion boiler to assist in heat supply; and combusted tail flue gas enters the flue gas heat exchange channel for performing traditional heat exchange, heat supply after heat exchange is guaranteed, therefore the continuous use requirements of users are met, and the use value of the flue gas heat exchanger is improved.

Description

technical field [0001] The invention relates to the technical field of heat exchange equipment, in particular to a flue gas heat exchanger with a supplementary combustion boiler. Background technique [0002] The flue gas heat exchanger can recover the heat in the tail smoke and reuse it, avoiding the waste of resources and conforming to the purpose of scientific development. Therefore, the flue gas heat exchanger is widely used in people's production and life. [0003] Traditionally, because the flue gas heat exchanger simply exchanges heat between cold water and tail smoke to absorb the heat in the tail smoke, although it can provide sufficient hot water resources when the tail smoke is sufficient, but when the tail smoke Insufficient or short duration of tail smoke, it is difficult for the flue gas heat exchanger to perform a complete heat exchange process, so that the cold water in the flue gas heat exchanger cannot reach the required temperature or provide continuous ho...

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Problems solved by technology

[0003] Traditionally, because the flue gas heat exchanger simply exchanges heat between cold water and tail smoke to absorb the heat in the tail smoke, although it can provide sufficient hot water resources when the tail smoke is sufficient, but when the tail smoke Insufficient or short tail smoke duration, it is difficult for the flue gas heat exchanger to perform a complete heat exchange process, so that the cold water in the flue gas heat exchanger cannot reach the required temperature or provide continuous hot water resources, which affects the The use of hot water in this situation has brought a lot of inconvenience to people's production and life, and has lost its use value.

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