电力科技与环保2024，Vol.40Issue(5)：455-464,10.DOI:10.19944/j.eptep.1674-8069.2024.05.002
"双碳"目标下煤电机组节能改造技术发展与实践
Development and practice of energy-saving retrofit technologies for coal power units under carbon peaking and carbon neutrality goals
摘要
Abstract
Under the background of carbon peaking and carbon neutrality,energy saving and carbon reduction in the coal power industry is an urgent problem to be solved.This paper summarises and analyses various energy-saving retrofit technologies for coal power units through retrofit cases,focusing on the impact of boiler and turbine optimisation on the overall energy-saving upgrading of power plants.Existing coal power energy-saving retrofit technologies include unit parameter upgrading retrofit technologies and equipment upgrading retrofit technologies.The key lies in the reasonable optimisation of turbines,boilers and their auxiliary systems.The parameter upgrading retrofit technology has a certain energy-saving effect,and the cross-generation retrofit can save power generation standard coal consumption of 3.5-8.5 g/(kW·h).The energy-saving effect of turbine efficiency retrofit technology is better,and the saving of standard coal consumption for power generation by through-flow retrofit is generally 6.0-10.0 g/(kW·h),which is highly feasible.The cost of boiler heating surface retrofit and piping retrofit is higher than that of through-flow retrofit,and the energy saving is about 3.5-4.5 g/(kW·h).Boiler using advanced waste heat recovery technology about 0.4 g/(kW·h)energy savings;the application of advanced pulverising system can significantly improve the efficiency of the pulverised coal separator so that the boiler efficiency by 0.2%-1%.In the future,the coal power industry needs to focus on the coupling application between energy-saving technologies and other technologies such as low-carbon and the construction of energy-saving and carbon reduction evaluation system.The formation of optimizable and evaluable energy-saving and low-carbon technology integration solutions for the characteristics of the units will support the green and low-carbon transformation of the coal power industry.关键词
煤电机组/节能改造/提参数/锅炉/汽轮机Key words
Coal power units/energy efficiency retrofits/raise parameter/boiler/turbine分类
能源科技引用本文复制引用
程文煜,张健,熊卓,赵永椿,张军营,陈国庆.."双碳"目标下煤电机组节能改造技术发展与实践[J].电力科技与环保,2024,40(5):455-464,10.基金项目
国家重点研发计划项目(2023YFB4102905) （2023YFB4102905）
低碳智能燃煤发电与超净排放全国重点实验室开放课题项目(D2023FK097) （D2023FK097）
