摘要
为实现净化黄磷尾气变换制甲醇合成气,对变换反应热力学、静力学及动力学进行了计算。通过计算,在汽气摩尔比为1.4时,反应放出热量33167.14kJ/kmol,将黄磷尾气变换反应设计为部分变换,变换采用循环进气的方式,可移走大量反应热,并可以使反应维持在催化剂活性温度范围内,此时平衡变换率为0.5294,可以满足制甲醇合成气的需要。实验表明,出口气体H2和CO摩尔比可以稳定在2∶1左右达到150h,催化剂床层温度稳定在催化剂活性温度范围内。
In order to prepare the methanol synthesis gas from purified yellow phosphorus off-gas by water-gas shift reaction, the thermodynamics, hydrostatic and dynamic parameters were calculated. The calculated results show that the partial shift must be adopted because the reaction heat reaches 33 167.14 kJ/kmol while the mole ratio of steam/gas is 1.4. The superfluous reaction heat can be removed by adopting the circular mode of gas-feeding, and the reaction can be kept at the active temperature of shift catalyst. An equilibrium shift ratio of 0.529 4 can be obtained under the above conditions and the shift ratio can meet the need of preparation of methanol synthesis gas. The experimental results show that the mole ratio of CO/H2 can be maintained at about 2 ： 1 for 150 h and the temperature of catalyst bed is in the range of catalyst activity temperature.
出处
《化学工程》
CAS
CSCD
北大核心
2009年第8期71-74,共4页
Chemical Engineering(China)
基金
国家发改委高科技产业化西部专项([2005]1899)
国家自然科学基金资助项目(50768006)
关键词
黄磷尾气
变换
甲醇合成气
工艺设计
yellow phosphorus off-gas
shift
methanol synthesis gas
process design
