外混合喷嘴液相孔尺寸对雾化性能的影响  

Effect of liquid-phase pore sizes on the spraying performance varied in outside-atomization nozzles

作　　者：姚敏[1] 庄壮[2] 梁健[3] 金政伟 匡建平 雍晓静[2] Yao Min;Zhuang Zhuang;Liang Jian;Jin Zhengwei;Kuang Jianping;Yong Xiaojing(Shenhua Ningxia Coal Industry Group Co.,Ltd.,Yinchuan Ningxia 750011,China;Institute of Coal Chemical Industry Technology,Shenhua Ningxia Coal Industry Group Co.,Ltd.,Yinchuan Ningxia 750411,China;Energy Source Equipment Division,Shanghai Marine Diesel EngineResearch Institute,Shanghai 201108,China;Ningxia Shenyao Technology Co. Ltd.,Yinchuan Ningxia 750200,China)

机构地区：[1]神华宁夏煤业集团有限责任公司,宁夏银川750011 [2]神华宁夏煤业集团有限责任公司煤炭化学工业技术研究院,宁夏银川750411 [3]中国船舶重工集团公司第七一一研究所,上海201108 [4]宁夏神耀科技有限责任公司,宁夏银川750200

出　　处：《石油化工》2019年第2期157-162,共6页Petrochemical Technology

基　　金：宁夏回族自治区宁东能源化工基地科技创新项目(2014NDKJ100);全国西部之光访问学者计划(2018年第15批)

摘　　要：借助"冷模"实验,以甲醇制丙烯(MTP)反应器外混合式雾化喷嘴为研究对象,分别选用N_2和H_2O为实验模拟介质,考察了液相孔结构与气液质量流量比(G/L)对雾化粒径分布、雾化角和雾化覆盖直径的影响规律。实验结果表明,当G/L=12.19、截面积比为0.022 3时,雾滴对应特征中值直径和最大直径分别为16.75μm和60.81μm,雾滴粒径分布介于5.49～40.89μm之间,雾化角达12.2°;且覆盖直径随着截面积比增大而略有增加,当液相通道内径为1.0 mm、液相环隙通道外径为12.22 mm和气相环隙通道内径为13.34 mm时,喷嘴对应覆盖直径达720 mm。The atomization performances of outside-atomization nozzles used in methanol-topropylene( MTP) reactor were investigated by “cold model” experiments. The effect rules of the different liquid-phase pore diameter sizes and gas-liquid mass flow ratios(G/L) on atomization particle size distributions,atomizing angles and droplet-covered diameter were also investigated. The experiment results showed that mean mass diameter and max mass diameter were 16.75 μm and 60.81 μm respectively,corresponding particle size distribution was between 5.49 μm and 40.89 μm,and atomizing angle was 12.2° while G/L maintained 12.19 and cross-section area ratios equaled to 0.022 3. Furthermore,droplet-covered diameter of the nozzle increased slightly with the increase of the cross-section area ratios,and it could reached 720 mm while liquid-phase pore inside diameter was 1.0 mm,aperture gaps of liquid-phase outside diameter was 12.22 mm and aperture gaps of gas-phase inside diameter was 13.34 mm.

关 键 词：固定床反应器 外混合 气-液相喷嘴 喷嘴结构 气液质量流量比 

分 类 号：TQ022.4[化学工程]