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1 CO2 纯度低对尿素生产的影响( 1 )影响尿素合成转化率。原料CO2 中惰性气体含量的增加会降低尿素合成中气相的NH3分压,导致液相中NH3浓度下降,使CO2 转化率降低。反之,则CO2 转化率提高。实验表明,CO2纯度在86%～1 0 0 %范围内,CO2 纯度每下降1 %,尿素合成转化率将下降0 .6%
1 CO2 purity low impact on urea production (1) affect the urea synthesis conversion rate. The increase of inert gas content in feedstock CO2 will reduce the partial pressure of NH3 in the gas phase in urea synthesis, resulting in the decrease of NH3 concentration in liquid phase and the decrease of CO2 conversion rate. Conversely, CO2 conversion is increased. Experiments show that the purity of CO2 is in the range of 86% ~ 100%, the purity of CO2 decreases by 1%, the conversion of urea synthesis will decrease by 0.6%