Compression type exhaust gas self cooling system

Abstract

The invention discloses a compression type exhaust gas self cooling system. The system comprises a thermal power system, a thermal power system exhaust path, an exhausting thermal power unit, a gas compressor, a first heat exhauster, a second heat exhauster and an expansion unit, wherein the thermal power system exhaust path of the thermal power system is communicated with the gas inlet of the exhausting thermal power unit; the exhaust port of the exhausting thermal power unit is communicated with the cooled gas inlet of the first heat exhauster; the cooled gas outlet of the first heat exhauster is communicated with the gas inlet of the gas compressor; the compressed gas outlet of the gas compressor is communicated with the cooled gas inlet of the second heat exhauster; the cooled gas outlet of the second heat exhauster is communicated with the gas inlet of the expansion unit; and the exhausting thermal power unit outputs power to the gas compressor or outputs power to the gas compressor in a compensatory manner. The system disclosed by the invention has the following beneficial effect: the closed gas phase cycle of the thermal power system can be efficiently realized and the exhaust of the thermal power system to the environment can be reduced or eliminated.

Description

technical field [0001] The invention relates to the field of thermal energy and power, in particular to a compressed exhaust self-cooling system. technical background [0002] In thermal power systems (such as engines, gas turbines, etc.), there are many situations where it is necessary to cool, liquefy or solidify the exhaust gas. For example, in order to recover the carbon dioxide in the exhaust gas, it is necessary to cool the exhaust gas and separate the water vapor in it before proceeding. Deep cooling, liquefaction or solidification of carbon dioxide. In some cases, such as to effectively recirculate the exhaust gas from the combustion chamber, it is also necessary to cool the exhaust gas. The temperature of the exhaust gas generally has a high temperature of seven to eight hundred degrees. The traditional method is to install a heat exchanger, but this method requires a large heat exchange area, and not only wastes the energy of the exhaust gas, but also needs to dis...

AI Technical Summary

Problems solved by technology

The temperature of the exhaust gas generally has a high temperature of seven to eight hundred degrees. The traditional method is to install a heat exchanger, but this method requires a large heat exchange area, and not only wastes the energy of the exhaust gas, but also needs to dissipate a large amount of energy. The power of the fan, so it has the disadvantages of bulky size and high power consumption

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