%0 Journal Article
%T 煤制天然气过程催化甲烷化的数值模拟<br>Numerical simulation of catalytic methanation process of producing natural gas using coal
%A 王翠苹
%A 李刚
%A 李厚洋
%A 姜旭
%J 热科学与技术
%D 2015
%R 10.13738/j.issn.1671-8097.2015.01.014
%X 两步法煤制天然气的第一步反应主要生产粗煤气CO和H2，调整CO:H2比值后进行甲烷化反应。在计算软件HSC中分别控制温度、压力和CO:H2比例，计算了甲烷化产物变化规律，得到第二步甲烷化反应最适条件是1.8MPa、700℃；通过在计算软件Fluent中进行一步法催化甲烷化反应的模拟，0.1MPa、720℃时的催化甲烷化即可达到无催化高压条件的甲烷产率，甲烷化产率最高时对应的n(H2):n(CO)比值为1.8。<br>The main products from the first step reaction of the two-step coal gasification are CO and H2, and the ratio of CO to H2 can be adjusted for the next methanation reaction step. A computing software HSC was used to compute the methanation product changing trend by controlling the reaction temperature, pressure and CO/H2 ratio, and the optimum condition for the second step reaction was derived as 1.8 MPa and 700℃. The catalytic methanation reaction was simulated using commercial software Fluent, and the coal gasification and methanation reaction occurred successively in a one-step reactor. The methanation productivity of catalytic methanation under the condition of 720℃ and 0.1 MPa is comparable to the high pressure production without catalytic reaction. The CO/H2 ratio of is up to 1.8 when the highest methanation yield is achieved.
%K HSC 甲烷化反应 Fluent 催化甲烷化&lt
%K br&gt
%K HSC methanation reaction FLUENT catalytic methanation
%U http://rkxyjs.ijournals.cn/ch/reader/view_abstract.aspx?file_no=C-14010&flag=1