Numerical calculation with experimental validation of pressure drop in a fixed‐bed reactor filled with the porous elements

摘要

Abstract > To study flow dynamics in a fixed‐bed reactor, experiment and numerical simulation are used. In this work, the flow dynamics in a fixed‐bed reactor filled with porous particles was simulated. For verification, experimental data were used. Porous particles were prepared from grains with sizes from 0.2 to 2.0?mm. Porous particles made by sintering grains in a muffle furnace. The study of pressure drop was performed in the velocity range up to 3?m/s. Numerical calculation was performed for a realistic computational domain obtained by RBD‐algorithm (rigid body dynamics). It was found that if the pore size is less than 0.5?mm, then the flow through the porous medium of particles is minimal; if the pore size is larger than 0.5?mm, then there is a flow through the porous elements of the fixed‐bed reactor. To take into account the porosity of the particles, <fi>γ</fi> correlation coefficient was proposed for the Ergun equation. </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> > 为了研究固定床反应器中的流动动力学，使用实验和数值模拟。在这项工作中，模拟了填充有多孔颗粒的固定床反应器中的流动动力学。为了验证，使用实验数据。多孔颗粒由0.2至2.0Ωmm的粒料从粒料中制备。通过烧结马弗炉中的晶粒制成的多孔颗粒。在高达3μm/ s的速度范围内进行压降的研究。对RBD算法（刚体动态）获得的现实计算域进行了数值计算。发现如果孔径小于0.5Ωmm，则通过多孔颗粒介质的流动是最小的;如果孔径大于0.5Ωmm，则存在通过固定床反应器的多孔元件的流动。考虑到颗粒的孔隙率， <fi>γ</ fi> 提出了Ergun方程的相关系数。 </ 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5期</span><b style="margin: 0 2px;">|</b><span>共9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=CFD modeling&option=203" rel="nofollow">CFD modeling;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=experiment&option=203" rel="nofollow">experiment;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=fixed‐bed&option=203" rel="nofollow">fixed‐bed;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=porous medium&option=203" rel="nofollow">porous medium;</a> </p> <div class="translation"> 机译：CFD建模;实验;固定床;多孔介质; 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