文献类型：期刊文献

中文题名：文丘里管收缩段高固气比气固两相流压降模型

英文题名：Pressure drop model for gas/solid flow in contraction section of Venturi with high solid-gas ratio

作者：李鹏[1];陆海峰[1];郭晓镭[1];龚欣[1]

机构：[1]华东理工大学煤气化及能源化工教育部重点实验室上海市煤气化工程技术研究中心,上海200237

年份：2017

卷号：45

期号：6

起止页码：39

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:【CSCD2017_2018】；

基金：国家自然科学基金资助项目(21206041);中央高校基本科研业务费专项资金资助(222201514338);上海市科学技术委员会科委资助(14dz1200100)

语种：中文

中文关键词：文丘里管;煤粉;两相流;动量传递;流体力学;压降模型

外文关键词：Venturi ; pulverized coal ; two-phase flow ; momentum transfer ; fluid mechanics ; pressure drop model

摘要：为建立高固气比(10 kg/kgIn order to establish a pressure drop model of gas-coal mixture flowing through the contraction section of Venturi with high solid-gas ratio （10 kg/kg 〈 Z 〈 135 kg/kg）, the pressure drop composition in the contraction section of Venturi in the dense phase pneumatic conveying system was analyzed, including pressure drop generated by gas and solid, and acceleration pressure drop of gas and solid. Then the model was realized by the numerical calculation method, and the variation characteristics along the distance of the pressure drop, gas and solid velocity were obtained. The results show that predicted results of pressure drop in Venturi contraction section at different contraction angle （5°, 9° and 13°are in good agreement with the experimental results giving total deviation within ＋20% under certain operating parameters, and the loss of static pressure energy of gas is mostly used for the acceleration of solid in gas-coal mixture with high solid-gas ratio, which leads to the acceleration pressure drop of the solid in the contraction section of the total pressure drop of 87% -97%.