Discussion and Analysis on Effect of Hot Secondary Air Governance Gypsum Rain on the Power Plant Unit

Abstract:

For gypsum rain phenomenon in limestone-gypsum wet desulfurization system. This article made programme that has used unit existing equipment allowance. Extracted hot secondary air to heat purified flue gas to eliminate "gypsum rain". This programme is implemented which makes temperature of purified flue gas rising to 70 °C. That almost eliminate "gypsum rain" phenomenon. While temperature of boiler exhaust gas declined, and temperature of hot air reduced, and boiler thermal efficiency declined, unit of power coal consumption rosed. Comparing to other programmes, this programme has a larger advantage in technology, economic, and security aspects.

• Periodical: Advanced Materials Research (Volumes 864-867)
• Pages: 1798-1803
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.864-867.1798
• Online since: December 2013
• Authors: Kun Lu*, Da Wei Chen, Zhuang Li
• Keywords: Boiler Efficiency, Gypsum Rain, Hot Secondary Air, Net Coal Consumption, WFGD

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