摘要
Abstract
In order to address the prevalent issues of low energy efficiency and equipment aging in small steam turbine units at waste-to-energy power plants,specifically targeting a 6 MW waste incineration generating unit in a county of Jiangxi.A collaborative technical renovation plan including turbine host upgrade and condenser replacement is proposed.During the investigation,a detailed thermodynamic system model is established to simulate and analyze unit performance under different retrofit scenarios.A comprehensive techno-economic analysis is conducted,incorporating key economic parameters such as equipment investment,operation and maintenance costs,and power generation revenue.The practical results show that after replacing the original equipment with a high-speed and high-efficiency steam turbine,the steam consumption rate of the turbine is significantly reduced by 21.2%,and the net power generation of the unit is correspondingly increased by 21.2%.It is expected that the annual new power generation income is 4.076 million yuan,and the static payback period of the project investment is about 1 a.The implementation of the overall replacement measures for the condenser effectively reduces the operating temperature difference of the condenser by 3.6℃,and further increases the net power generation of the unit by 1.41%on this basis.It is expected that the annual new power generation income is 328 000 yuan,and the investment payback period for the condenser renovation is about 1.1 a.This study systematically constructs an energy efficiency improvement technology path and implementation plan suitable for small waste incineration power plants,and its methods and results can provide technical references for energy-saving and efficiency improvement of similar old units.关键词
垃圾焚烧发电/汽轮机改造/转速优化/端差优化/热经济性分析/投资回收期Key words
waste-to-energy(WTE)/turbine retrofit/rotational speed optimization/terminal temperature difference optimization/thermo-economic analysis/payback period分类
信息技术与安全科学
