Gradient utilization system by medium/low-temperature geothermal energy assisted carbon dioxide capture
A technology of carbon dioxide and geothermal energy, applied in the direction of direct carbon dioxide emission reduction, inorganic chemistry, energy input, etc., can solve the problems of power plant power generation efficiency decline, large heat energy consumption, etc., and achieve the effect of avoiding waste, realizing stable operation, and eliminating adverse effects
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Embodiment 1
[0022] When the medium and low temperature geothermal energy is used in stages, the connection relationship between the medium and low temperature geothermal energy subsystem, the power generation subsystem and the carbon dioxide capture subsystem is as follows: figure 1 As shown, after the production well 24 in the medium and low temperature geothermal energy subsystem is sequentially connected in series through the first control valve 19, the filter 20, the geothermal heat exchanger 21 and the third pump 22, the geothermal water after heat exchange is regenerated Backfilling into the injection well 25, to keep the balance of geothermal water. The working fluid at the outlet of the heat source end of the reboiler 8 is connected to the inlet of the heat source end of the low-pressure feed water heat exchanger 12, and the outlet of the heat source end of the low-pressure feed water heat exchanger 12 is connected to the inlet of the second pump 23, thereby realizing medium and lo...
Embodiment 2
[0024] When the medium and low temperature geothermal energy can only realize the energy supply and utilization of the reboiler 8, the connection relationship between the medium and low temperature geothermal energy subsystem, the power generation subsystem and the carbon dioxide capture subsystem is as follows: figure 2 As shown, the outlet of the heat source end of the reboiler 8 is directly connected to the second pump 23, the outlet of the second pump 23 is connected to the inlet of the low-temperature end of the geothermal heat exchanger 21, and the outlet of the low-temperature end of the geothermal heat exchanger 21 is connected to the into the steam extraction pipeline and connected to the heat source end of the reboiler 8 to provide the required thermal energy for the reboiler 8. The connection method of embodiment 2 only uses geothermal energy to provide the heat required by the reboiler 8, which has the advantage of simplifying the system structure and reducing the ...
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