Abstract: Chemical absorption represents a mainstream and efficient technology for carbon dioxide capture in coal-fired power plants, which can drastically cut direct CO₂ emissions of power units. Nevertheless, this technique suffers from prominent energy consumption drawbacks. A large volume of extracted steam from power plants is consumed during the high-temperature CO₂ desorption process, leading to sharp declines in power supply efficiency and rising power generation costs. Such issues greatly hinder the large-scale engineering application of carbon capture technology in coal-fired power units. To offset the energy loss of carbon capture systems and mitigate their adverse impacts on power plant performance, this paper proposes a novel integrated carbon capture system coupled with an Organic Rankine Cycle (ORC). Leveraging the low-grade waste heat power generation characteristics of ORC, the system recovers low-temperature waste heat generated in carbon capture processes for energy regeneration.A process model for capturing one million tons of CO₂ annually is established using the chemical process simulation software Aspen Plus, with an integrated ORC unit deployed to recover waste heat from stripper overhead gas and reboiler condensate water. Five organic working fluids, namely RC318, R152a, R600a, R600 and R245fa, are selected for simulation. The influences of working fluid mass flow rate and evaporation pressure on the net power output, heat absorption capacity, thermal efficiency, exergy efficiency of the ORC system, as well as the cooling water circulation flow rate of the integrated system are analyzed systematically.Simulation results indicate that both the evaporation pressure and mass flow rate of organic working fluids in the integrated system are positively correlated with net power output, while a mutual restriction exists between these two parameters. The primary heat source for heating the ORC working fluid originates from the waste heat of stripper regenerated gas, which serves as the core source of waste heat recovery. Among the five working fluids, R152a exhibits the optimal comprehensive performance. Under the optimal operating conditions of 3 MPa evaporation pressure and a mass flow rate of 188 kg/s, the maximum net power output reaches 7.29 MW. Meanwhile, it only induces a 2.36% increase in cooling water circulation flow rate. This scheme can effectively compensate for the energy consumption penalty of carbon capture and reduce the power generation efficiency loss of coal-fired power plants by 18.50%.