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Scale‐up analysis of autothermal operation of methane oxidative coupling with La2O3La2O3/CaO catalyst

机译：甲烷氧化偶联与LA2O3LA2O3 / CAO催化剂的自热运作的扩展分析

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Abstract > The exothermicity of oxidative coupling of methane (OCM) renders a cooled packed‐bed reactor impractical or impossible. Recently, we proposed an adiabatic autothermal reactor as a solution to this problem and reported the first results for stable autothermal operation (AO) with feed at ambient temperature. AO on the ignited branch is possible only in the region of steady‐state multiplicity. High per‐pass conversion and productivity requirements demand a stable ignited branch at the lowest possible feed temperature and high flow rate. To achieve OCM scale‐up, many conditions must be satisfied simultaneously. Using a kinetic model for <fi>La</fi> <sub>2</sub> <fi>O</fi> <sub>3</sub> / <fi>CaO</fi> catalyst, we examine the impact of space time, feed methane to oxygen ratio, feed temperature, particle size, inter‐phase heat and mass transfer gradients, pore‐diffusion, bed scale heat/mass dispersion on the region of AO for large scale adiabatic packed‐bed reactors. We show that while it is possible to achieve <fi>CH</fi> <sub>4</sub> conversion of about 20% and <fi>C</fi> <sub>2</sub> selectivity of about 80% in scaled‐up reactors, these values are sensitive to the design and operating parameters. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“Main”XML：Lang =“en”> <标题类型=“main”>抽象</ title> > 甲烷（OCM）的氧化偶联的放热使冷却的填充床反应器变得不切实际或不可能。最近，我们提出了一种绝热自热反应器作为该问题的解决方案，并报道了在环境温度下用饲料稳定自热操作（AO）的第一种结果。点燃分支上的AO只有在稳态多个区域中也是可能的。高级转换和生产率要求需要稳定的点火分支，以尽可能低的饲料温度和高流速。为了实现OCM Scale-Up，必须同时满足许多条件。使用动力学模型 <fi> la </ fi> <sub> 2 </ sub> <fi </ fi> <sub> 3 </ sub> / <fi> cao </ fi> 催化剂，我们检查空间时间的影响，饲喂甲烷对氧比，进料温度，粒度，相互转移梯度，孔隙扩散，床比例热/质量分散在AO的大型绝热区域包装床反应器。我们表明虽然有可能实现 <fi> ch </ fi> <sub> 4 </ sub> 转换约20％和 <fi> c </ fi> <sub> 2 </ sub> 在缩放反应器中，选择性约为80％，这些值对设计和操作参数敏感。 </ p> </摘要> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-18537/'>《AIChE Journal》</a> <b style="margin: 0 2px;">|</b><span>2020年第6期</span><b style="margin: 0 2px;">|</b><span>共14页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/238.html" title="化学工业">化学工业;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=autothermal operation&option=203" rel="nofollow">autothermal operation;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=extinction&option=203" rel="nofollow">extinction;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=ignition&option=203" rel="nofollow">ignition;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=mass transfer control&option=203" rel="nofollow">mass transfer control;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=oxidative coupling&option=203" rel="nofollow">oxidative coupling;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=pore diffusion&option=203" rel="nofollow">pore diffusion;</a> </p> <div class="translation"> 机译：自动操作;灭绝;点火;传质控制;氧化偶联;孔隙扩散; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704022506743.html">Scale‐up analysis of autothermal operation of methane oxidative coupling with La2O3La2O3/CaO 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</li> <li> <div> <b>5. </b><a class="enjiyixqcontent" href="/academic-journal-cn_chinese-journal-catalysis_thesis/0201295483822.html">甲烷在SrO-La_2O_3/CaO催化剂上的氧化偶联 Ⅰ.SrO对La_2O_3/CaO催化剂的助催化作用</a> <b>[J]</b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=余林&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 余林</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=徐奕德&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,徐奕德</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=黄家生&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,黄家生</a> <span> <a href="/journal-cn-28399/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 催化学报 </a> </span> <span> . 1993</span><span>,第1期</span> </span> </div> </li> <li> <div> <b>6. </b><a class="enjiyixqcontent" href="/academic-conference-cn_meeting-32680_thesis/02022655267.html">CaO、SrO膜上甲烷氧化偶联的NEMCA效应研究</a> <b>[C]</b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=马忠龙&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 马忠龙</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=李家玲&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,李家玲</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=杨(王争)&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,杨(王争)</a> <span> <a href="/conference-cn-32680/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 第七届全国高校化学工艺学术会议 </a> <span> <span> . 2000</span> </span> </div> </li> <li> <div> <b>7. </b><a class="enjiyixqcontent" href="/academic-degree-domestic_mphd_thesis/020314922493.html">计算机辅助催化剂配方优选及在多组分甲烷氧化偶联催化剂设计中应用</a> <b>[A] </b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=黄凯&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 黄凯</a> <span> . 2001</span> </span> </div> </li> </ul> <ul style="display: none;"> <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/patent-detail/06120113801204.html">甲烷氧化偶联反应用催化剂的短周期制备方法及甲烷氧化偶联反应用催化剂和其应用</a> <b>[P]</b> . <span> 中国专利： CN113797951A </span> <span> . 2021-12-17</span> </div> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/patent-detail/06120112849091.html">甲烷氧化偶联催化剂及其制备方法和甲烷氧化偶联制乙烯的方法</a> <b>[P]</b> . <span> 中国专利： CN112871152A </span> <span> . 2021-06-01</span> </div> </li> <li> <div> <b>3. </b><a class="enjiyixqcontent" href="/patent-detail/06130403282313.html">CATALYSTS SUPPORTED ON MODIFIED-CARRIER FOR OXIDATIVE COUPLING RACTION OF METHANE AND METHOD FOR OXIDATIVE COUPLING RACTION OF METHANE USING THE SAME</a> <b>[P]</b> . <span> 外国专利：  KR20190057752A </span> <span> . 2019-05-29</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：改性载体上甲烷氧化偶联反应的催化剂及甲烷氧化偶联反应的方法 </span> </p> </li> <li> <div> <b>4. </b><a class="enjiyixqcontent" href="/patent-detail/06130403110443.html">CATALYSTS SUPPORTED ON MODIFIED-CARRIER FOR OXIDATIVE COUPLING RACTION OF METHANE AND METHOD FOR OXIDATIVE COUPLING RACTION OF METHANE USING THE SAME</a> <b>[P]</b> . <span> 外国专利：  KR102036741B1 </span> <span> . 2019-10-28</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：改性载体上甲烷氧化偶联反应的催化剂及甲烷氧化偶联反应的方法 </span> </p> </li> <li> <div> <b>5. </b><a class="enjiyixqcontent" href="/patent-detail/06130401815540.html">Catalysts supported on modified-carrier for oxidative coupling reaction of methane and method for oxidative coupling reaction of methane using the same</a> 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