摘要
国家节能减排工作的持续推进,刺激了中高压工业供汽的需求。本文在分析现有供汽技术特点的基础上,针对大流量、全工况、中高压工业供汽,提出一种新型复合循环型高压工业供汽技术改造方案。在国产超临界350 MW供热机组上进行了整体热力特性模拟,对改造后系统整体的运行参数、关键设备选型等进行了详细分析。该技术对锅炉、汽轮机本体改造工程量小、无不可恢复改造项目;改造后供汽量大幅提升、供汽系统启停灵活,对机组正常运行影响较小;外供蒸汽参数调整灵活、方便,增加供汽灵活性;供汽能力具有非常好的负荷适应性,可保证机组在供汽条件下仍具有良好的深度调峰能力。
Energy conservation and emission reduction is attracting more and more concern in recent years, along with that, industry steam supply with medium/high pressure is increasing. In order to achieve large mass flow and full running condition adaptability, a novel combined cycle high pressure industry steam supply technology is proposed, on the basis of analyzing the characteristics of current steam supply technologies. Moreover, the overall thermodynamic characteristics of a supercritical 350 MW unit is simulated, and the operating parameters and key equipment type selection of the entire system after transformation using the above technology is analyzed in detail. The results show that, for the proposed technology, no permanent modifications are needed to the boiler and turbine, which means that there is almost no influence in the unit’s performance when industry steam is off-line. After the retrofitting, the steam supply amount greatly increases, the start-stop of the steam supply system is flexible, and the normal operation of the unit is affected little. The parameter adjustment of the external steam supply is flexible and convenient, and the steam supply flexibility is increased. The load adaptability is very good, even under deep peak shaving condition the unit could still achieve steady industry steam supply.
作者
范庆伟
徐君诏
陆刚
雒青
王伟
常东锋
FAN Qingwei;XU Junzhao;LU Gang;LUO Qing;WANG Wei;CHANG Dongfeng(Xi'an Thermal Power Research Institute Co.,Ltd.,Xi'an 710054,China;Huaneng Xinjiang Energy Development Co.,Ltd.,Urumqi 830017,China)
出处
《热力发电》
CAS
北大核心
2020年第4期82-86,共5页
Thermal Power Generation
基金
中国华能集团有限公司总部科技项目(HNKJ17-H13)。
关键词
节能减排
复合循环
高压工业供汽
热电联产
超临界350
MW机组
技术方案
energy conversation and emission reduction
combined cycle
high pressure industry steam supply
heat and power cogeneration
supercritical 350 MW unit
technical solution
