Absorption circulating system based on temperature and pressure raising technique

Abstract

The invention discloses an absorption circulating system based on a temperature and pressure raising technique and belongs to the field of energy recycling. The absorption circulating system based onthe temperature and pressure raising technique comprises a temperature and pressure raising sub circle and an absorption power sub circle. The temperature and pressure raising sub circle comprises a generator, a first separator, a condenser, a first working medium pump, an evaporator and a temperature and pressure booster, wherein an inlet of the first separator is connected to an outlet of the generator; an inlet of the condenser is connected to a gas outlet of the first separator; an inlet of the first working medium pump is connected to an outlet of the condenser; an inlet of the evaporatoris connected to an outlet of the first working medium pump; and a gas inlet of the temperature and pressure booster is connected to an outlet of the evaporator. An inlet temperature and an inlet pressure of a turbine are enhanced by means of power circular waste heat / conventional waste heat, and the working condition of the turbine is improved, so that energy is utilized thoroughly more effectively. In addition, compared with a conventional circle, a transformation mode is relatively easy to achieved, so that an existing industrial waste heat utilizing level is improved favorably.

Description

technical field [0001] The invention relates to the technical field of energy recovery and utilization, in particular to an absorption circulation system based on temperature raising and pressure raising technology. Background technique [0002] With the continuous improvement of energy demand, low-grade energy such as solar energy, ocean energy, low-grade waste heat generated in the production process of enterprises, and heat emitted from flue gas have great utilization value due to their wide distribution; [0003] For example, the patent application number is 201010033707.4, and a closed Brayton cycle waste heat power generation system was announced on 2010.07.28. The start-up booster system is connected to the helium inlet of the counterflow flue gas heat exchanger through the helium circulation pipeline, and the counterflow flue gas The helium outlet of the heat exchanger is connected to the turbine power unit through the helium circulation pipeline, and the helium wast...

AI Technical Summary

Problems solved by technology

The device of the present invention has high thermal energy-mechanical energy conversion efficiency, large unit capacity, compact structure, strong heat source adaptability, high power / weight ratio, and good technical and product stability. To meet the inlet conditions of the turbine, heat exchangers and confluencers are used to change the inlet conditions of the turbines, but the conversion and utilization of low-grade energy are not involved, but heat exchangers are used for direct heating, although the inlet conditions are improved , but the conversion utilization rate of low-grade energy is still very low, and the utilization of low-grade waste heat is not complete. After the heat source is utilized, there is still a certain amount of exergy and heat, and if the heat exchanger is used to raise the temperature, an additional high-temperature heat source will undoubtedly be required. This will undoubtedly increase energy consumption, and it is difficult to achieve the purpose of energy saving.

[0007] To sum up, it can be seen that the conversion of low-grade energy is difficult at present, and the difficulty of utilization is high. The current turbine inlet temperature and pressure cannot meet the needs of efficient conversion; usually for low-grade temperature difference resources, the conversion efficiency of the absorption cycle is higher than that of the Rankine cycle. , but the small pressure difference caused by the small temperature difference restricts the working conditions of the turbine, and it is particularly important to improve the inlet conditions of the turbine; in addition, the current utilization of low-grade waste heat is not complete, and there is still a certain amount of exergy after the heat source is utilized. and heat, how to use energy more efficiently is also very important

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