A study on non catalytic oxidation kinetics of calcium sulfite is presented under typical conditions of wet flue gas desulfurization (FGD)in this paper A laboratory scale mechanically stirred tank reactor is used with...A study on non catalytic oxidation kinetics of calcium sulfite is presented under typical conditions of wet flue gas desulfurization (FGD)in this paper A laboratory scale mechanically stirred tank reactor is used with continuous feed of both gas and liquid phase The results show that increasing CaSO 3 load from a lower value, the reaction rate increases and is limited by solid sulfite dissolution The oxidation rate limitation is observed at loads exceeding certain concentration The rate limitation is possibly caused by solid sulfite solubility or oxygen gas liquid diffusion The experimental conclusions are useful for design and operation of the holding tank in forced oxidation wet展开更多
为了考察等离子体活化空气产生臭氧对脱硫浆液中亚硫酸钙的氧化作用,采用沿面放电等离子体发生装置,探究了放电电压、曝气量、曝气气体温度以及亚硫酸钙浆液的浓度和温度等参数对亚硫酸钙氧化率的影响。结果表明,在室温条件下,当亚硫酸...为了考察等离子体活化空气产生臭氧对脱硫浆液中亚硫酸钙的氧化作用,采用沿面放电等离子体发生装置,探究了放电电压、曝气量、曝气气体温度以及亚硫酸钙浆液的浓度和温度等参数对亚硫酸钙氧化率的影响。结果表明,在室温条件下,当亚硫酸钙浓度为0.01 mol/L时,放电电压取15 k V、曝气量取1.0 m3/h时具有较好的放电氧化效果;较低的曝气气体温度和亚硫酸钙浓度、以及较高的浆液温度有利于亚硫酸钙的放电氧化。当放电电压为14 k V、亚硫酸钙浆液初始浓度0.01 mol/L时,放电氧化仅采用0.7 m3/h曝气量就可使其氧化率达到空气自氧化采用1.4 m3/h曝气量时的氧化率的1.49~1.59倍。当放电氧化的浆液浓度为空气自氧化的2倍时,其氧化率为空气自氧化的1.2~1.5倍,在降低工艺投资和运营成本方面具有明显优势。展开更多
文摘A study on non catalytic oxidation kinetics of calcium sulfite is presented under typical conditions of wet flue gas desulfurization (FGD)in this paper A laboratory scale mechanically stirred tank reactor is used with continuous feed of both gas and liquid phase The results show that increasing CaSO 3 load from a lower value, the reaction rate increases and is limited by solid sulfite dissolution The oxidation rate limitation is observed at loads exceeding certain concentration The rate limitation is possibly caused by solid sulfite solubility or oxygen gas liquid diffusion The experimental conclusions are useful for design and operation of the holding tank in forced oxidation wet
文摘为了考察等离子体活化空气产生臭氧对脱硫浆液中亚硫酸钙的氧化作用,采用沿面放电等离子体发生装置,探究了放电电压、曝气量、曝气气体温度以及亚硫酸钙浆液的浓度和温度等参数对亚硫酸钙氧化率的影响。结果表明,在室温条件下,当亚硫酸钙浓度为0.01 mol/L时,放电电压取15 k V、曝气量取1.0 m3/h时具有较好的放电氧化效果;较低的曝气气体温度和亚硫酸钙浓度、以及较高的浆液温度有利于亚硫酸钙的放电氧化。当放电电压为14 k V、亚硫酸钙浆液初始浓度0.01 mol/L时,放电氧化仅采用0.7 m3/h曝气量就可使其氧化率达到空气自氧化采用1.4 m3/h曝气量时的氧化率的1.49~1.59倍。当放电氧化的浆液浓度为空气自氧化的2倍时,其氧化率为空气自氧化的1.2~1.5倍,在降低工艺投资和运营成本方面具有明显优势。
