整体式催化剂上固定床甲烷氧化偶联反应器的数值模拟（英文）

【摘要】：A three-dimensional geometric model was set up for the oxidative coupling of methane(OCM) fixed bed reactor loaded with Na_3PO_4-Mn/SiO_2/cordierite monolithic catalyst,and an improved Stansch kinetic model was established to calculate the OCM reactions using the computational fluid dynamics method and Fluent software.The simulation conditions were completely the same with the experimental conditions that the volume velocity of the reactant is 80 ml·min~(-1) under standard state,the CH_4/O_2 ratio is 3 and the temperature and pressure is800 ℃ and 1 atm,respectively.The contour of the characteristic parameters in the catalyst bed was analyzed,such as the species mass fractions,temperature,the heat flux on side wall surface,pressure,fluid density and velocity.The results showed that the calculated values matched well with the experimental values on the conversion of CH4 and the selectivity of products(C_2H_6,C_2H_4,CO,CO_2 and H_2) in the reactor outlet with an error range of±4%.The mass fractions of CH_4 and O_2 decreased from 0.600 and 0.400 at the catalyst bed inlet to 0.445 and0.120 at the outlet,where the mass fractions of C_2H_6,C_2H_4,CO and CO_2 were 0.0245,0.0460,0.0537 and 0.116,respectively.Due to the existence of laminar boundary layer,the mass fraction contours of each species bent upwards in the vicinity of the boundary layer.The volume of OCM reaction was changing with the proceeding of reaction,and the total moles of products were greater than reactants.The flow field in the catalyst bed maintained constant temperature and pressure.The fluid density decreased gradually from 2.28 kg·m~(-3) at the inlet of the catalyst bed to 2.18 kg·m~(-3) at the outlet of the catalyst bed,while the average velocity magnitude increased from 0.108 m·s-1 to 0.120 m·s~(-1). 【作者单位】： State
【关键词】： Numerical simulation Fixed bed reactor Computational fluid dynamics Oxidative coupling of methane Monolithic catalyst
【基金】：Supported by the National Basic Research Program of China(2005CB221405)
【分类号】：O621.251
【正文快照】： 1.IntroductionThe conversion of methane to chemicals and liquid fuels is achievedmainly by direct methods and indirect methods.The direct methods aremore potential since they can avoid the syngas step[1].Oxidative cou-pling of methane(OCM)is one of the d

您可以在本站搜索以下学术论文文献来了解更多相关内容

Oxidative coupling of methane in a dual-bed reactor comprising of particle/cordierite monolithic catalysts    

Modeling the oxidative coupling of methane: Heterogeneous chemistry coupled with 3D flow field simulation    Yaghobi Nakisa;Ghoreishy Mir Hamid Reza;

Oxidative coupling of methane in a fixed bed reactor over perovskite catalyst:A simulation study using experimental kinetic model    Nakisa Yaghobi;Mir Hamid Reza Ghoreishy;

Oxidative Coupling of Methane over Lithium Doped (Mn+W)/SiO_2 Catalysts    A. Malekzadeh;A. Khodadadi;A. K. Dalai;M. Abedini;

甲烷在W-Mn体系催化剂上氧化偶联制乙烯    方学平,李树本,林景治,禇衍来

甲烷氧化偶联Mn_2O_3-Na_2WO_4/SiO_2催化剂——Ⅰ.表面分散状态和氧化物/担体相互作用    蒋致诚,于长江,方学平,李树本,何金海,罗锡辉

整体式催化剂上固定床甲烷氧化偶联反应器的数值模拟（英文）    张照;郭紫琪;季生福;

甲烷制乙烯技术研究进展    贺久长;韩洁;

Effect of CO_2 on the structural variation of Na_2WO_4/Mn/SiO_2 catalyst for oxidative coupling of methane to ethylene    Jia Shi;Lu Yao;Changwei Hu;

甲烷氧化偶联制乙烯催化剂的研究进展    张明森;冯英杰;柯丽;武洁花;赵清锐;

Numerical simulation of packed-bed reactor for oxidative coupling of methane    Zhao Zhang;Ziqi Guo;Shengfu Ji;

中国催化三十年进展:理论和技术的创新    辛勤;林励吾;

Particle/metal-based monolithic catalysts dual-bed reactor with beds-interspace supplementary oxygen:Construction and performance for oxidative coupling of methane    

Kinetic study of oxidative coupling of methane over Mn and/or W promoted Na_2SO_4/SiO_2 catalysts    M.Ghiasi;A.Malekzadeh;S.Hoseini;Y.Mortazavi;A.Khodadadi;A.Talebizadeh;

Mn/W催化剂上甲烷氧化偶联反应机理的Monte Carlo模拟    倪嵩波;黄凯;傅淑霞;

颗粒/整体式催化剂双层床反应器中甲烷氧化偶联反应性能    潘登;季生福;汪文化;李成岳;

金属基整体式催化剂的研究进展    卢泽湘;范立维;

友刊链接    

镍基整体式催化剂上生物质粗燃气重整调变的特性研究    李凯;定明月;李宇萍;王铁军;吴创之;马隆龙;

有机废气催化燃烧用贵金属钯整体式催化剂的研究    林探厅;余倩;李永峰;刘祖超;姚煌;李俊;余林;李聪;

由杉木锯屑生物质制合成气:镍基整体式催化剂的表征及催化性能    鲁敏;吕鹏梅;袁振宏;李惠文;许敬亮;

Co-Ni_2P/SBA-15/Cordierite整体式催化剂的制备及其二苯并噻吩加氢脱硫性能(英文)    吴平易;兰玲;季生福;魏妮;吕忠武;刘辉;

整体式催化剂的物化性能研究    王军,沈美庆,秦永宁,刘杨胜

堇青石整体式催化剂的研究进展    刘芸;吴爽;张忠金;臧树良;

甲烷在整体式Co基催化剂上的燃烧性能    任屹罡,陈耀强,庞秀江,龚茂初

整体式催化剂MnO_X-CeO_2/Al_2O_3催化燃烧苯研究    闫生辉;

整体式催化剂的应用及研究进展    马瑞平;熊春燕;乔永志;王媛媛;张云;闫皙;

整体式催化剂活性物质抗脱落性能研究    吴东方;孔尚尚;

纳米碳材料/碳化硅整体式催化剂:制备,修饰以及在烷烃脱氢反应中的应用    刘洪阳;袁华;刁江勇;王琦;苏党生;

Pd/Y_2O_3整体式催化剂的制备及甲苯氧化性能研究    金凌云;苏孝文;鲁继青;罗孟飞;

化学镀技术制备钯基/316L不锈钢丝网整体式催化剂净化甲苯    李宇;李永峰;周碧玉;余倩;余林;

Pd/Graphene/堇青石整体式催化剂的制备与性能研究    朱玉超;周永华;叶红齐;

添加不同助剂的铈基储氧材料对低浓度乙醇低温催化燃烧活性的影响    曹红岩;龚茂初;王健礼;沈美;闫生辉;刘志敏;陈耀强;

CeO_2-Y_2O_3涂层的绿色制备及负载Pd整体式催化剂的研究    金凌云;苏孝文;鲁继青;何迈;罗孟飞;

CeY涂层负载Pd整体式催化剂的研究    金凌云;何迈;谢冠群;罗孟飞;

含La、Ce整体式催化剂及其反应性能研究    季生福;

六铝酸盐及其金属基整体式催化剂的甲烷催化燃烧研究    李彤

分子筛催化氮氧化物分解的反应过程研究    王玉丽

微乳液浸渍—破乳技术制备钯整体式催化剂及其催化加氢性能研究    周永华

低碳烷烃CO_2氧化脱氢催化剂的制备及其催化性能的研究    史雪君

磷化物催化剂的制备及其加氢脱硫反应性能的研究    魏妮

用于H_2中CO优先氧化的CuO-CeO_2/FeCrAl整体式催化剂研究    曾尚红

甲基丙烯醛一步氧化酯化制甲基丙烯酸甲酯整体式催化剂的制备与研究    冯鹏飞

环己烷选择性氧化钒基整体式催化剂催化性能的研究    郭佳能

应用于笑气分解的整体式催化剂的研究    韩俊波

磷化物整体式催化剂的制备与加氢脱硫性能研究    董亮

化学镀法制备用于有机废气催化燃烧处理的整体式催化剂的研究    林探厅

整体式催化剂反应/反应耦合强化的研究    刘茜

整体式催化剂用于过氧化氢异丙苯分解反应的研究    韩丽

甲烷氧化偶联整体式催化剂的制备及反应性能的研究    唐晶晶

用于高含水量丙烯酸废气催化净化的整体式钯催化剂的研究    易攀

甲烷氧化偶联整体式催化剂的制备及反应性能的研究    孙思