Macrokinetics of sulfite oxidation inhibited by Glycerol in a organic amine wet flue gas desulfurization process
Wei Fengyu1， Wang Qilin1, Zou Yongchang1, Yao Gang1, Xu Guangze2
1. School of Chemistry and Chemical Engineering， Hefei University of Technology, Hefei 230009, China;
2. Shuangdun Environment Technology Company, Yixing 214205, China
It is necessary to slow down the oxidation rate of sulfite so as to improve the economical benefit and the recycling process feasibility of organic amine wet flue gas desulfurization. The macrokinetics of sulfite oxidation inhibited by Glycerol were investigated in an bland aqueous solution of N, N′-bis (2-hydroxypropyl) piperazine (HPP) and 1-(2-hydroxyethy) piperazine (HEP) using a batch stirred reactor. The effects of initial S4+ concentration Cs, Gly concentration CGly, amine concentration CN, pH value and temperature T on the oxidation reaction rate r are discussed. The results show that in the range of pH vaule 5.5 to 6.5, r decreases with the increase of pH vaule, Gly concentration and amine concentration, but increases with temperature. And the apparent activation energy of S4+ oxidation reaction is 12.22 kJ/mol. An empirical macrokinetic equation of Gly inhibiting S4+ oxidation is established, as the following form of r=■C■·exp(■)·10■ in the organic amine system.
魏凤玉1，王麒麟1，邹勇昌1，姚 港1，徐光泽2. 有机胺湿法脱硫中丙三醇抑制亚硫酸盐氧化的宏观动力学[J]. 煤炭与化工, 2022, 45(4): 151-155.
Wei Fengyu1， Wang Qilin1, Zou Yongchang1, Yao Gang1, Xu Guangze2. Macrokinetics of sulfite oxidation inhibited by Glycerol in a organic amine wet flue gas desulfurization process. CCI, 2022, 45(4): 151-155.
