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利用磷石膏和废氨水对二氧化碳(CO_2)进行矿化反应,研究反应温度、反应时间、液固比、氮硫物质的量之比、CO_2流量、搅拌转速、水洗预处理次数等因素对磷石膏-废氨水体系矿化CO_2能力的影响。通过实验确定最佳反应条件:反应温度40℃、反应时间60 min、液固比8.0 m L/g、氮硫物质的量之比2.4、CO_2流量500 m L/min、搅拌转速300 r/min、水洗预处理次数3次。在此条件下,磷石膏-废氨水对CO_2的矿化能力可达到100g磷石膏固定CO_223.60 g。
Phosphogypsum and spent ammonia were used to carry out mineralization reaction of carbon dioxide (CO2). The effects of reaction temperature, reaction time, ratio of liquid to solid, ratio of nitrogen and sulfur, flow rate of CO2, stirring speed and pretreatment times on phosphogypsum Effect of Waste Ammonia System on Mineralization of CO_2. The reaction conditions were as follows: the reaction temperature was 40 ℃, the reaction time was 60 min, the liquid-solid ratio was 8.0 m L / g, the ratio of nitrogen and sulfur was 2.4, the flow rate of CO 2 was 500 m L / min and the stirring speed was 300 r / min , Washed pretreatment times 3 times. Under these conditions, the phosphogypsum - ammonia wastewater can reach 100g of phosphogypsum fixed CO_223.60g.