华电技术 ›› 2019, Vol. 41 ›› Issue (12): 78-80.

• 技术交流 • 上一篇    

燃煤电厂脱硫主塔氧化风完全失去的影响和预控措施

  

  1. 国电驻马店热电有限公司,河南驻马店〓463000

  • 出版日期:2019-12-25 发布日期:2020-01-17

Impact and preventive measures for total loss of oxidizing air on main desulfurization tower of a coalfired power plant

  1. Guodian Zhumadian Thermal Power Company Limited, Zhumadian 463000, China

  • Online:2019-12-25 Published:2020-01-17

摘要:

2×330MW亚临界燃煤供热电厂采用石灰石-石膏湿法烟气脱硫工艺,按照单塔双循环技术进行超净排放改造后,吸收塔采用2台氧化风机(11),机组正常运行中氧化风完全失去,导致吸收塔浆液pH值下降,机组出口SO2质量浓度上升。分析了吸收塔氧化风完全失去的危害并提出了生产运行中的预防及控制措施,确保脱硫系统安全、可靠、经济运行。

关键词:

font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">燃煤电厂, 石灰石-石膏湿法烟气脱硫工艺, 氧化风, SOfont-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">2质量浓度, 浆液, pHfont-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">

Abstract:

Limestonegypsum wet flue gas desulfurization process is taken by 2×330MW subcritical coalfired units in a heatsupply power plant. After ultraclean transformation taking singletower doublecirculation technology, the absorption tower sets up two oxidation fans(one for normal operation and one for backup). During the normal operation of the unit, the oxidizing air is totally lost, which causes the increase of slurry pH in the absorption tower and the increase of SO2 mass concentration at the unit outlet. The hazards of total loss of oxidizing air in the absorption tower are analyzed, and preventive measures during operation are proposed, to ensure the safe, reliable and economical operation of the desulfurization system.

Key words:

font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">coalfont-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">fired power plant, limestonefont-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">gypsum wet flue gas desulfurization process, oxidizing air, SOfont-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">2 mass concentration, slurry, pHfont-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">