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中文摘要：
在2L高压反应釜内,通过测定平衡时总Cr6＋浓度及Cr2O72-浓度,研究了反应温度、CO2压力、搅拌转速、碳化反应时间及Na2CrO4料液浓度对碳化法生产Na2Cr2O7工艺中一次碳化率的影响及一次碳化率、总Cr6＋浓度对Na2CrO4二次碳化率的影响.结果表明,在反应温度60℃、CO2压强1.2MPa、搅拌速度800r/min、反应时间2h及料液浓度4.17mol/L时,一次碳化率可达70%;一次碳化率为60%及总Cr6＋浓度为5mol/L时,二次碳化率可达95%.
英文摘要：
The effects of reaction temperature,pressure of CO2,stirring speed,reaction time and concentration of feed liquid on the first carbonization rate in the process of carbonization for sodium dichromate were studied,and the influences of the first carbonation rate and total concentration of chromium on the secondary carbonation rate.The experiment was carried in a high pressure reaction kettle.The results showed that when the reaction temperature was 60℃,pressure of CO2 1.2 MPa,stirring speed 800 r/min,reaction time 2 h and liquid concentration 4.17 mol/L,the first carbonization rate reached 70%.When the first carbonation rate was 60% and total chromium concentration 5 mol/L,the secondary carbonization rate reached 95%.
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