节点文献
甲烷化反应工艺流程和反应器模拟
Methanation reaction process and reactor simulations
【摘要】 通过分析绝热反应曲线和反应过程CO转化率曲线,设计可行的多级绝热固定床甲烷化工艺流程,得到了一个第一甲烷化反应器循环比为3.0,反应器个数为3的甲烷化反应系统。建立绝热固定床反应器的一维拟均相数学模型,在工业操作条件下,分析了该流程中3个甲烷化反应器内的温度和摩尔分数分布规律。在合成气的进料速度800 kmol/h,进料温度553 K,操作压力为3.0 MPa,氢碳物质的量比约为3.0,循环比为3.0的条件下,模拟结果表明:物料在3个反应器出口的温度分别为879,725,611 K;甲烷干基摩尔分数分别为53.48%,79.24%和95.49%;CO在3个反应器出口的转化率分别为82.18%,99.41%和100%。第3反应器出口CH4干基摩尔分数为95.49%,满足了工业生产要求。
【Abstract】 By analyzing adiabatic reaction equilibrium curve and CO conversion curve,the multiple adiabatic methanation process of three reactors was obtained with the first reactor recycle ratio of 3. 0. A one-dimensional pseudo-homogeneous model of adiabatic fixed-bed reactor was developed to calculate the distribution of temperature and mole fraction under industrial conditions. The reactor simulations were carried out under the condition of feed rate 800 kmol / h,inlet temperature 553 K,operation pressure 3 MPa and H2/( CO + CO2) mole ratio about 3. The results showed that the outlet temperature reached 879 K,725 K and 611 K,the outlet CH4dry-based mole fraction were 53. 48%,79. 24% and 95. 49%,respectively. The CO conversion were 86. 48%,99. 20% and 100%,respectively. The outlet CH4dry-based mole fraction of the third reactor was 95. 49%,which should meet the requirement of industrial production.
【Key words】 methanation; adiabatic fixed-bed reactor; one-dimensional pseudo-homogeneous; reactor simulations;
- 【文献出处】 化学工程 ,Chemical Engineering(China) , 编辑部邮箱 ,2016年08期
- 【分类号】TE665.3
- 【被引频次】5
- 【下载频次】400