Carbon Capture Systems Optimal Location Scheme For Multi-stage Emission Reduction Planning In Power Plants

CCS technology is one of the important means to the current CO2emissionreduction.To install the carbon capture systems in the Conventional thermal power plants,making it becomes to be the carbon capture power plant. It can achieve large-scale, highefficiency of emission reduction; it is no doubt that the introduction of carbon capturesystem has brought unprecedented opportunities and challenges to Chinese powergeneration companies. However, duing to high equipment costs and the immaturity of theCCS technology, the application of the carbon capture system in China is still very scarce.Because of the CCS technology is not mature; the investment of carbon capture systems isa high-risk project. Not planned carbon capture systems configuration not only result anunnecessary waste but also cause the obstruction to the development of new technologies.Therefore, the risk assessment and the investment planning of carbon capture systemshave the great significance.The paper focus on the issue of the multi-stage optimal allocation of carbon capturesystems from two aspects, one is the operating characteristics of carbon capture powerplant;the other is the general expenses of carbon capture power plant.The main contents ofthis paper is as follows:First of all, the paper introduces some typical carbon capture technology, includingthe technical principles and technical line, and looking ahead the development prospectsof the CCS technology. Then, described the importance and usefulness of the emissionreduction planning of the carbon capture systems. By introducing technology readinesslevel factor, researched the three stages of the CCS technology development in China.Subsequently, the emission reduction index of the planning period decomposed into eachstage rationally by the rate of technological progress and applied it to the later model.Secondly, the paper studies the impact of the power generation efficiency andelectricity costs for thermal power plants. The three aspects of the investment cost of theCarbon capture systems were quantified through mathematical formula and incorporatedit into the model of optimize allocation of carbon capture systems, the optimum model ofcarbon capture systems with minimum general expenses as objective function isdeveloped.Finally, an algorithm based on the discrete bacterial colony chemotaxis (DBCC) wasused to solve this problem, the optimal allocation under different emission reduction scenarios and average mitigation cost curve of power plants of carbon capture systemswas obtained, and the general laws of the power plant configuration of the carbon capturesystem were obtained by the analysis. On this basis, the operation of the carbon capturesystems were studied, the operation scheme of the carbon capture systems were gottenwith maximum power generation companies profit as objective function when at the 40%of the emission reduction index. The impact of different factors on the mitigation costs indifferent emission reduction scenarios was obtained by sensitivity analysis. The resultsdemonstrate the effectiveness of the model and the optimization algorithm.