文献类型：期刊文献

中文题名：甲烷化反应工艺流程和反应器模拟

英文题名：Methanation reaction process and reactor simulations

作者：沈叶婷[1];张海涛[1,2];房鼎业[1,2];李涛[1,2]

机构：[1]华东理工大学大型工业反应器工程教育部工程研究中心化学工程联合国家重点实验室,上海200237;[2]华东理工大学煤气化及能源化工教育部重点实验室,上海200237

年份：2016

卷号：44

期号：8

起止页码：42

中文期刊名：化学工程

外文期刊名：Chemical Engineering(China)

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

语种：中文

中文关键词：甲烷化;绝热固定床反应器;一维拟均相;反应器模拟

外文关键词：methanation ; adiabatic fixed-bed reactor; one-dimensional pseudo-homogeneous ; 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。
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 CH4 dry-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 CH4 dry-based mole fraction of the third reactor was 95.49%, which should meet the requirement of industrial production.