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Analysis on Operation and Corrosion of Shock Wave Ash Blowing System in Desulfurization and Denitration Unit

Chen Xiaoyi;SINOPEC Qingdao Petrochemical Co.,Ltd.;  
Taking the catalytic flue gas desulfurization and denitrification unit of a refinery as an example, the general situation and upgrading reconstruction of the unit are briefly introduced.Aiming at the dew point corrosion problem of sulfur in the shock wave ash blowing system which is most common in the operationprocess of desulphurization and denitrification waste heat boiler, the corresponding measures are put forward combining with the operation and corrosion status of the unit, which reduced the frequency of sulfur leakage corrosion in the shock blowing system of desulphurization and denitrification waste heat boiler, as well as the operation risk of the unit.
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