Compression type exhaust gas self cooling system

Abstract

A compression type exhaust self-cooling system includes a thermodynamic system (1), an exhaust passage (2), an exhaust thermodynamic unit (3), a gas compressor (4), a first heat radiator (5), a second heat radiator (51) and an expansion unit (6). The exhaust passage (2) of the thermodynamic system (1) is communicated with the gas inlet of the exhaust thermodynamic unit (3). The gas outlet of the exhaust thermodynamic unit (3) is communicated with the inlet for the gas to be cooled of the first heat radiator (5), and the cooled gas outlet of the first heat radiator (5) is communicated with the gas inlet (401) of the gas compressor (4). The compressed gas outlet (402) of the gas compressor (4) is communicated with the inlet for the gas to be cooled of the second heat radiator (51), and the cooled gas outlet of the second heat radiator (51) is communicated with the gas inlet of the expansion unit (6). The exhaust thermodynamic unit (3) outputs power or a compensatory power to the gas compressor (4). The system can realize the gas-closed cycle in a high efficiency, and reduce or eliminate the pollutant emission.

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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