Solution cooling absorption type ammonia water motive power circulation device

Abstract

The invention discloses a solution cooling absorption type ammonia water motive power circulation device, which consists of an evaporator 1, a turbine machine set 3, a regenerator 4, a low-pressure absorbing device 5, a low-pressure ammonia pump 6, a gas-liquid separator 7, a pre-heater 8, a high-pressure absorbing device 9, a high-pressure ammonia pump 10, a throttle valve 11 and a connecting pipeline, wherein the low-pressure absorbing device and the high-pressure absorbing device are respectively divided into a solution cooling absorbing section and a cooling water absorbing section, and the solution cooling absorbing section is arranged above the cooling water absorbing section. The solution cooling absorption type ammonia water motive power circulation device has the advantages that the absorbing device outlet solution is used for cooling the front section of the absorbing process, the cooling water quantity can be reduced, the heat discharge and the heat transfer loss on the environment can be reduced, the heat transfer area is favorably reduced, and the circulation heat efficiency is favorably improved. The solution cooling absorption type ammonia water motive power circulation device is provided with the three-flow pre-heater for preheating work solution before entering the evaporator, the dilute solution and rich ammonia gas entering the absorber can be cooled, the absorption driving force can be enhanced, and in addition, the smoke gas low-temperature corrosion resistance of the device is favorably improved.

Description

technical field [0001] The invention relates to a power cycle device, in particular to a solution cooling absorption type ammonia water power cycle device for power generation with medium and low temperature waste heat. Background technique [0002] Many industrial processes will produce a large amount of sensible heat waste heat, and most of the heat sources of geothermal energy and solar energy are sensible heat. Because of its exothermic process is characterized by large temperature changes, the isothermal endothermic process in the water vapor Rankine cycle does not match it, and under the limitation of node temperature difference, there is a large irreversible loss of heat transfer temperature difference; many Freon Similar working fluids have the effect of damaging the ozone layer, and the price is relatively expensive. The traditional working medium water has a high boiling point, the saturation pressure at room temperature is a vacuum state, and the specific volume ...

AI Technical Summary

Problems solved by technology

However, if the mixture of ammonia and water is simply used as the circulating working fluid, although the endothermic evaporation process of the working fluid can achieve a temperature change matching the exothermic process of the sensible heat source, the condensation and exothermic process of the working fluid will also have a large temperature. Change, which will increase the average exothermic temperature and reduce the thermal efficiency of the cycle

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