碳循环利用的垃圾焚烧电厂-烟气处理-P2G协调优化运行

Coordinated and Optimized Operation of Waste Incineration Plant-Flue Gas Treatment-P2G with Carbon Cycle

垃圾焚烧电厂中垃圾热值普遍偏低,常需天然气作为辅助燃料,由此产生了大量的碳排放。为解决此环保难题,本文构建了基于碳循环利用的垃圾焚烧电厂-烟气处理-P2G协调优化运行模型,在焚烧电厂烟气处理后加装CO_(2)收集装置,结合P2G技术将回收的CO_(2)合成CH_(4),实现碳循环和再利用。模型以售电收益、碳排放成本、辅助燃料购买成本、烟气处理及P2G功率运行成本等组成的综合净收益最大为目标,以焚烧发电、烟气处理、烟气收集、烟气存储、和P2G合成等运行参数为约束条件。仿真结果表明,利用峰谷分时电价,可优化不同时段的烟气存储装置、发电、烟气处理及P2G的运行状态,有效减少辅助燃料购买及碳排放成本,增加售电收益。采用含碳收集、P2G和辅助燃料补充协调优化运行的垃圾焚烧电厂,可充分实现碳循环利用,极大限度地减少碳排放,具有显著的经济及社会效益。

Aiming at the environmental protection problem that the CO_(2) generated by waste incineration power plants is difficult to deal with,a waste incineration power plant-flue gas treatment-P2G coordinated and optimized operation model based on carbon recycling is constructed in this paper.The electricity-to-gas technology recovers CO_(2) and synthesizes methane to realize carbon recycling and reuse.The model aims to maximize the comprehensive net income composed of electricity sales revenue,carbon emission costs,auxiliary fuel purchase costs,flue gas treatment and power-to-gas power operating costs.The operating periods of incineration power generation,flue gas treatment,flue gas collection,flue gas storage,and electricity-to-gas synthesis are the decision variables.The simulation results show that the model uses the real-time electricity price and the flue gas storage device to flexibly coordinate the power generation,flue gas treatment and power to gas operation state of the waste incineration power plant in different periods,which can effectively reduce the cost of auxiliary fuel purchase and carbon emission,increase the income of electricity sales,fully realize the carbon recycling,and have significant economic and social benefits.