In order to slow down the corrosion of the heating surface in the incineration furnace, the Everbright Environment Energy’s (Boluo) power plant in Huizhou, Guangdong province, was selected for the study. During the study, calcium hydroxide was added to the furnace, the corrosion layer and deposition were analyzed by Scanning Electron Microscopy, and the analysis of the local and all-element components of the deposition was carried out by the Energy Dispersive Spectrometer and the X-ray Fluorescence Spectrometer. Results showed that, the acid gases which contain Cl and S were absorbed by calcium hydroxide effectively. S content in the tube layer decreased from 25.33% to 8.17%, and sulfur corrosion was greatly slowed down. Alkali metal content such as Na and K increased from 0.89% and 0.44% to 4.81% and 3.11%, and the alkali metal corrosion was accelerated to a certain extent. The amount of Fe in the deposition of the tube decreased from 8.42% to 4.54%, which proved that the high temperature corrosion was effectively alleviated by adding calcium hydroxide on considering both acid gas corrosion and alkali metal corrosion.
OUYANG Xiao-ping
,
XU Hai-feng
,
ZHOU Jin-peng
,
LAI Jian-hua
,
WU Hai-hong
,
MA Xiao-qian
,
YU Zhao-sheng
,
CHEN Li-mei
,
LIN Yan
. Effect of Calcium Hydroxide on Heating Surface Corrosion of Waste Incinerator[J]. Advances in New and Renewable Energy, 2017
, 5(6)
: 417
-425
.
DOI: 10.3969/j.issn.2095-560X.2017.06.002
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