• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

ELECTRIC POWER CONSTRUCTION ›› 2015, Vol. 36 ›› Issue (3): 114-118.doi: 10.3969/j.issn.1000-7229.2015.03.020

Previous Articles     Next Articles

Comparison of Unit and Public Urea Hydrolysis Process Technology for Flue Gas Denitrification

JIANG Yanliang1,2, ZHU Lin1,2,LI Xiaoming1,2 ,WANG Xianna1,2   

  1. 1. School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing
    210044,China; 2. State Power Environmental Protection Research Institute, Nanjing 210031, China
  • Online:2015-03-01

Abstract:

Combined with specific project examples, the safety reliability and space adaptability of the public urea hydrolysis technology for flue gas denitrification were compared with that of the unit system urea hydrolysis technology, as well as their arrangements, through the research methods of surveys, case studies and lessons. And compared with the unit system configuration, the main advantages of the public system are embodied in the following aspects: the public system is safer and more reliable because of the mutual standby for the hydrolysis reactor; the main pipeline based on transporting ammonia, reduces the possibility of the blockage of the pipeline; which can adapt to the concentration fluctuation of inlet NOx; the space layout is more flexible and compact; more boilers, more advantages can be taken by the public system. The public layout of urea hydrolysis system is recommended priority for the condition that the loading rate is not high, the concentration of nitrogen oxides fluctuations high and the power plant locates in cold regions.

Key words: urea hydrolysis, layout, flue gas denitrification, selective catalytic reduction(SCR)