外混合喷嘴液相孔尺寸对雾化性能的影响
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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 ?ow 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 40.89μm,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.
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 ?ow 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 40.89μm,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.
引文
[1]Mobil Oil Corporation.Aromatization reactions:US3894103[P].1975-07-08.
[2]Chang C D,Chu C T W,Socha R F.Methanol conversion to olefins over ZSM-5[J].J Catal,1984,86(2):289-296.
[3]潘红艳,田敏,何志艳,等.甲醇制烯烃用ZSM-5分子筛的研究进展[J].化工进展,2014,33(10):2625-2633.
[4]文尧顺,南海明,吴秀章,等.甲醇制烯烃反应动力学及反应器模型研究进展[J].化工进展,2014,33(10):2521-2527.
[5]王垚,狄佐星,李玉新,等.用于甲醇制烯烃的非均相催化反应器评述[J].化工学报,2014,65(7):2474-2484.
[6]李希,应磊,成有为,等.甲醇制烯烃多级串联流化床反应器模拟[J].化工学报,2015,66(8):3041-3049.
[7]Khanmohammadi M,Amani S H,Garmarudi A B,et al.Methanol-to-propylene process:Perspective of the most important catalysts and their behavior[J].Chin J Catal,2016,37(3):325-339.
[8]Yarulina M,Chowdhury A D,Meirer F,et al.Recent trends and fundamental insights in the methanol-to-hydrocarbons process[J].Nature Catal,2018,1:398-411.
[9]陈丽.我国MTO/MTP生产技术的研究进展[J].石油化工,2015,44(8):1024-1027.
[10]宋鹏飞,侯建国,王秀林,等.绝热多段固定床甲烷化反应器设计中几个问题的研究[J].现代化工,2014,34(10):143-145,147.
[11]中国寰球工程公司.一种轴向逐层递增型冷激式甲醇制丙烯固定床反应器:201210139453.3[P].2012-05-07.
[12]Guo Wenyao,Wu Wenzhang,Luo Man,et al.Modeling of diffusion and reaction in monolithic catalysts for the methanolto-propylene process[J].Fuel Process Technol,2013,108(4):133-138.
[13]文尧顺,吴秀章,张永民,等.甲醇制烯烃SHMTO工艺反应器的大型冷模实验研究[J].石油学报:石油加工,2015,31(4):836-844.
[14]侯凌云,侯晓春.喷嘴技术手册[M].2版.北京:中国石化出版社,2007:67-141.
[15]梁健,庄壮,邬文燕,等.甲醇制丙烯反应器雾化喷嘴的性能研究[J].石油化工,2017,46(7):908-913.
[16]庄壮,匡建平,雍晓静,等.不同液相孔径对MTP反应器喷嘴雾化性能的影响[J].天然气化工:C1化学与化工,2016,41(6):78-83.
[17]Payri R,Viera J P,Gopalakrishnan V,et al.The effect of nozzle geometry over internal flow and spray formation for three different fuels[J].Fuel,2016,183(20):20-33.
[2]Chang C D,Chu C T W,Socha R F.Methanol conversion to olefins over ZSM-5[J].J Catal,1984,86(2):289-296.
[3]潘红艳,田敏,何志艳,等.甲醇制烯烃用ZSM-5分子筛的研究进展[J].化工进展,2014,33(10):2625-2633.
[4]文尧顺,南海明,吴秀章,等.甲醇制烯烃反应动力学及反应器模型研究进展[J].化工进展,2014,33(10):2521-2527.
[5]王垚,狄佐星,李玉新,等.用于甲醇制烯烃的非均相催化反应器评述[J].化工学报,2014,65(7):2474-2484.
[6]李希,应磊,成有为,等.甲醇制烯烃多级串联流化床反应器模拟[J].化工学报,2015,66(8):3041-3049.
[7]Khanmohammadi M,Amani S H,Garmarudi A B,et al.Methanol-to-propylene process:Perspective of the most important catalysts and their behavior[J].Chin J Catal,2016,37(3):325-339.
[8]Yarulina M,Chowdhury A D,Meirer F,et al.Recent trends and fundamental insights in the methanol-to-hydrocarbons process[J].Nature Catal,2018,1:398-411.
[9]陈丽.我国MTO/MTP生产技术的研究进展[J].石油化工,2015,44(8):1024-1027.
[10]宋鹏飞,侯建国,王秀林,等.绝热多段固定床甲烷化反应器设计中几个问题的研究[J].现代化工,2014,34(10):143-145,147.
[11]中国寰球工程公司.一种轴向逐层递增型冷激式甲醇制丙烯固定床反应器:201210139453.3[P].2012-05-07.
[12]Guo Wenyao,Wu Wenzhang,Luo Man,et al.Modeling of diffusion and reaction in monolithic catalysts for the methanolto-propylene process[J].Fuel Process Technol,2013,108(4):133-138.
[13]文尧顺,吴秀章,张永民,等.甲醇制烯烃SHMTO工艺反应器的大型冷模实验研究[J].石油学报:石油加工,2015,31(4):836-844.
[14]侯凌云,侯晓春.喷嘴技术手册[M].2版.北京:中国石化出版社,2007:67-141.
[15]梁健,庄壮,邬文燕,等.甲醇制丙烯反应器雾化喷嘴的性能研究[J].石油化工,2017,46(7):908-913.
[16]庄壮,匡建平,雍晓静,等.不同液相孔径对MTP反应器喷嘴雾化性能的影响[J].天然气化工:C1化学与化工,2016,41(6):78-83.
[17]Payri R,Viera J P,Gopalakrishnan V,et al.The effect of nozzle geometry over internal flow and spray formation for three different fuels[J].Fuel,2016,183(20):20-33.