High-efficiency steam power cycle system for cascaded utilization of energy

A high-efficiency steam power cycle system for cascaded utilization of energy, comprising:

• a steam cycle system and an organic working fluid Rankine cycle system;
• wherein
• the steam cycle system comprises a steam generator, a steam turbine, a condenser, and a separation device, the separation device is provided with a first outlet and a second outlet;
• and an outlet of the steam generator, the steam turbine, the condenser, an inlet of the separation device, the first outlet, and an inlet of the steam generator are sequentially connected;
• the organic working fluid Rankine cycle system comprises a heat exchanger, the heat exchanger is provided with a water-based absorbent inlet and a water-based absorbent outlet;
• and
• the water-based absorbent outlet, an inlet of the condenser, the inlet of the separation device, the second outlet, and the water-based absorbent inlet are sequentially connected;
• and
• the separation device is configured to separate a mixed liquid discharged from the condenser into water and a water-based absorbent solution;
• and the water flows to the steam generator through the first outlet, and the water-based absorbent solution flows to the heat exchanger through the second outlet.