Comprehensive upgrading reconstruction and performance analysis of a subcritical boiler

Abstract

Abstract:

In order to improve the economy and flexibility of units and meet environment requirements,it is necessary to upgrade and reconstruct energyintensive and highemission coalfired units. Taking a 600MW subcritical coalfired unit as researching object,the schemes,items and effects of the comprehensive upgrading were studied.The results indicated that the unit after reconstruction met the demands of the expansion to 630MW.Efficiency of the boiler has increased by 0.2%~0.7%, roughly and the net coal consumption rate under heating operation has been below 300g/(kW·h), the national standard.Meanwhile,the fluegas temperature at the SCR inlet during lowload running has been improved.

Key words:

font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">comprehensive upgrading and reconstruction, boiler efficiency, net coal consumption rate, coalfont-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">firde units

WU Siming，TONG Jialin，WU Yueseng，QI Yong，SUN Wuyi.

Comprehensive upgrading reconstruction and performance analysis of a subcritical boiler [J]. Huadian Technology, 2020, 42(6): 66-71.

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Comprehensive upgrading reconstruction and performance analysis of a subcritical boiler

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