Analysis and optimization of blast furnace gas dry dedusting and alkali spraying tower system
FU Yi1,2
（1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China 2. Human Resource Department, Shougang Qian′an Iron and Steel Co., Ltd., Qian′an 064404, Hebei, China）
Abstract：The dry dedusting alkali spraying tower system of blast furnace gas in No.3 new BF raised the problem of low flue gas condensate pH value, while the same type of system has been worked in No.2 BF of Qian′an Steel Company successfully. According to this phenomenon, the operation characteristics, such as alkali concentration, external drainage system, parameters of nozzles and alkali pumps, the gas residence time in alkali spraying tower and atomization effects of alkali nozzles, were analyzed contrastively. The results showed that the poor capability of the drainage system and the low atomization efficiency of the alkali nozzles were the main reasons for the low pH value of the blast furnace gas condensate. After improving the external drainage system and the alkali nozzles, the gas condensate pH value of No.3 blast furnace was between 6 and 7, which could not only prevent the production accidents caused by the corrosion of the blast furnace gas condensate, but also reduce the system operation cost.
付祎 . 高炉煤气干法除尘喷碱塔系统的分析与优化[J]. 中国冶金, 2018, 28(7): 41-45.
FU Yi,. Analysis and optimization of blast furnace gas dry dedusting and alkali spraying tower system[J]. China Metallurgy, 2018, 28(7): 41-45.
2018, Vol. 28 
