Hydropower coproduction system capable of performing gradient utilization of flue gas waste heat concentrated solutions and working method of hydropower coproduction system

Abstract

The invention discloses a hydropower coproduction system capable of performing gradient utilization of flue gas waste heat concentrated solutions and a working method of the hydropower coproduction system, and belongs to the field of energy resources and power. The hydropower coproduction system is characterized in that the heat quantity of flue gas (1) is absorbed by an inorganic salt dilute solution (2) in a heater (9), so that waste heat recovering is realized; the heated dilute solution enters a humidifying tower (10) to transfer heat and mass to low-temperature dry air (3); when the temperature of the air (3) is raised, the moisture content of the air (3) is increased, then the air (3) enters a heat exchanger (13) to transfer heat and mass to an organic working medium (4); the temperature of the air (3) is reduced, and the moisture is deposited; the low-temperature air (3) enters a gas-liquid separator (14); and the separated air enters the humidifying and packing tower (10) againthrough a fan (15) to start the next circulation. The hydropower coproduction system disclosed by the invention utilizes the differences of moisture loading capacity of the air in different temperatures, through the direct contact of air-dilute solution in the humidifying tower, heat and mass transferring is performed, and the concentration of the inorganic salt dilute solution is realized; the gradient utilization of energy is realized, the utilization rate is high, and the energy saving effect is good.

Description

technical field [0001] The invention relates to a hydropower cogeneration system and a working method for cascade utilization of flue gas waste heat concentrated solution, belonging to the field of energy and power. Background technique [0002] The temperature of industrial exhaust gas is relatively high, and it is a high-grade medium and low temperature heat source. Recycling waste heat from flue gas to achieve cascade utilization of energy can have a very good energy-saving effect. [0003] The methods for concentrating inorganic salt solutions include distillation, freezing, electrodialysis and reverse osmosis. The techniques that can be used on a large scale in engineering are distillation and reverse osmosis. Distillation is divided into multi-stage flash evaporation and multi-stage flash evaporation. Effect distillation, and multi-effect distillation is the main method. But for some corrosive salt solutions, it is difficult to concentrate the solution in a simple wa...

AI Technical Summary

Problems solved by technology

But for some corrosive salt solutions, it is difficult to concentrate the solution in a simple way

[0004] In view of the problems existing in the current solution concentration method and the concentration of corrosive salt solutions, it is necessary to propose a method that can concentrate some corrosive inorganic salt solutions and at the same time achieve the purpose of extracting pure water. water shortage

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