Open AccessThe Application and Performance Evaluation of Condensing Dust Removal and Demisting Device Apply in Desnifurization System
Author(s) -
Fengji Wang,
Yue Zhu
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/555/1/012057
Subject(s) - flue gas desulfurization , slurry , mist , heat exchanger , cooling tower , flue gas , environmental science , water cooling , waste management , materials science , environmental engineering , nuclear engineering , meteorology , engineering , mechanical engineering , physics
In order to realize the ultra-low emission of flue gas in a 600 MW coal-fired unit, the original demister of desulfurization tower (two-stage ridge demister + one-stage tube demister) was transformed into a Condensing dust removal and demisting device. The Condensing dust removal and demisting device is composed of a three-stage ridge type high-efficiency mist eliminator and a condensing wet film layer. In addition, it is equipped with a cooling station outside the tower composed of a spray cooling water pump and a closed cooling equipment under 100% and 50% working conditions, by adjusting the operation mode of the cooling station and controlling the operation. The slurry droplet emission of the desulfurization system under different working conditions, the overall collaborative dust cleaning efficiency and the SO 3 removal rate were tested on site. The test results show that the heat exchange of the cooling station has a great influence on the operation effect of the Condensing dust removal and demisting device, and improving the heat exchange of the cooling station is helpful to improve the removal effect of slurry drop, dust and SO 3 .