A device for recovering waste heat and moisture in flue gas

Abstract

The invention relates to a device for recovering waste heat and moisture in flue gas, which comprises a concentrated solution storage tank connected with a regenerator, the solution outlet of the storage tank is respectively connected with the inlet of the regenerator and the concentrated solution inlet of the dilute concentrated solution heat exchanger Connected; the concentrated solution outlet of the dilute concentrated solution heat exchanger is connected with the concentrated solution inlet of the dilute solution storage tank, the solution outlet of the dehumidification dust collector is connected with the inlet of the dilute solution storage tank, and the outlet of the diluted solution storage tank is exchanged with the diluted concentrated solution respectively. The dilute solution inlet of the heater is connected with the solution channel inlet of the solution-water heat exchanger, the dilute solution outlet of the dilute concentrated solution heat exchanger is connected with the dilute solution inlet of the concentrated solution storage tank; the solution outlet of the solution-water heat exchanger is connected through The heat source end of the heat pump is connected to the inlet of the dehumidifier and dust collector; the water channel inlet of the solution-water heat exchanger is connected to the water to be treated, and the water channel outlet is connected to the water channel inlet of the steam cooling heat exchanger through the cold source end of the heat pump. The channel outlet is connected to the user; the steam outlet of the regenerator is connected with the steam inlet of the steam cooling heat exchanger, and the flue gas inlet and outlet of the regenerator are respectively connected with the flue gas outlet of the industrial combustion chamber and the flue gas inlet of the dehumidifier and dust collector.

Description

technical field [0001] The invention relates to a waste heat recovery and utilization system, in particular to a device based on solution dehumidification technology and capable of recovering waste heat and moisture in flue gas. Background technique [0002] The solution dehumidification method is a humidity treatment method that uses the water vapor partial pressure difference between the humid air and the hygroscopic solution to realize the transfer and transfer of moisture. During the process of moisture evaporation, condensation and mass transfer, it is also accompanied by the phase change of the wet air. The heat transfer process with the solution. Compared with the traditional waste heat recovery technology, the solution dehumidification technology requires a lower driving heat source temperature and a simple structure, which can realize independent control of temperature and humidity and purify the air at the same time. It has been rapidly developed and popularized in...

AI Technical Summary

Problems solved by technology

At present, the research of solution dehumidification technology on low-temperature waste heat recovery (such as flue gas, etc.) is mainly limited to using low-temperature waste heat as the driving heat source of solution dehumidification air-conditioning system. During the process, although the heat in the flue gas has been fully recovered and reused, the water vapor and air pollutants have not been effectively treated and recovered.

Images