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气升式

气升式的相关文献在1989年到2023年内共计499篇,主要集中在化学工业、废物处理与综合利用、植物学 等领域,其中期刊论文97篇、会议论文4篇、专利文献2600867篇;相关期刊66种,包括中国抗生素杂志、辽宁石油化工大学学报、石油化工高等学校学报等; 相关会议3种,包括生物制品研发与质量控制及生物反应器研讨会、第八届全国生物化工学术会议、第七届全国生物化工学术会议等;气升式的相关文献由1074位作者贡献,包括刘永民、欧阳平凯、郑平等。

气升式—发文量

期刊论文>

论文:97 占比:0.00%

会议论文>

论文:4 占比:0.00%

专利文献>

论文:2600867 占比:100.00%

总计:2600968篇

气升式—发文趋势图

气升式

-研究学者

  • 刘永民
  • 欧阳平凯
  • 郑平
  • 李干禄
  • 陈可泉
  • 韦策
  • 王瑛
  • 艾训儒
  • 董静洲
  • 郑小江
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 李婷
    • 摘要: 建立高长径比的内循环气升式反应器冷模装置,该反应器主体高为2000mm、内径90mm、壁厚5mm的圆管,导流筒高1550mm、外径60mm、壁厚2.3mm,底部间PVC制成,液体间歇操作,空气经流量计后连续鼓入反应器内.表观气速的范围为1.32~4.92cm·s-1,以空气-水-石英砂为实验物系,在静液高为1600mm,石英砂装载量w为1.32%、2.61%、5.14%、7.59%条件下,考察了循环液速与表观气速和固体装载量的关系,并研究了上升区气含率、上升区固含率的轴向分布情况.实验结果表明:一定气量下,低装载量时,气含率随轴向高度的增加分布均匀,高装载量时,气含率分布不均匀;在一定表观气速范围内,循环液速随着石英砂装载量增加而降低.
    • 王帅; 付鑫; 龙文宇; 刘永民
    • 摘要: 在内径0.090 m、高2m的旋流气升式环流反应器(HALR)中,表观气速为0.37~3.9 cm/s,以空气为气相,分别以水、6个质量分数(w=0.5%~1%)的甘油水溶液为液相,研究了在不同底部间隙、翅片数量及翅片角度时,上升区平均气含率随表观气速的变化规律.结果 表明,所有物系上升区平均气含率都随表观气速的增加而增加;在低表观气速(ug<1.2 cm/s)时,不同翅片角度及翅片数量对上升区平均气含率影响小;在高表观气速(ug>1.2 cm/s)时,上升区平均气含率随翅片数量增加而增大、随翅片角度减小而增大;底部间隙小(b=1 25、24cm)的上升区平均气含率相接近,并都小于底部间隙大(b=3.5cm)的上升区平均气含率;上升区平均气含率随w(甘油)的增加而增加;建立了气含率与w(甘油)的关联式,关联式的预测值与实验值吻合较好,平均相对误差为5.54%.
    • 刘鹏麟; 刘永民; 陈琴
    • 摘要: Raw materials for refining process are poorer and poorer, while people's awareness of environment protection is enhancing, the quality requirements of light oil are higher and higher,so the circulation reactor has been paid more and more attention because of its simple structure, convenient operation, low energy consumption, good mass transfer and heat transfer effect. In this experiment, the gas flow rate of the circulating reactor (its height 1 370 mm, diameter 100 mm) with finned fins was deeply studied under room temperature and 0.2 MPa pressure in air-water two-phase system. The relationship between superficial gas velocity, axial height, bottom gap, top gap, the finned draft tube, gas-liquid separator and the local gas holdup in riser, overall average gas holdup was studied.%炼油工艺原料的重质化,劣质化越来越严重,人们对环境的保护意识增强,对轻质油品质量的要求提高,而环流反应器因具有结构简单、操作方便、能耗低、传质及传热效果好等特点受到越来越多的关注.研究了有分离器带翅片倒流筒的环流反应器气含率.实验在室温、压力0.2 MPa、水-空气两相物系的实验条件下,以有分离器带翅片导流筒的环流反应器(高为1370 mm、直径为100 mm)为主要研究对象.实验研究了表观气速、轴向高度、底部间隙、顶部间隙、翅片导流筒以及气液分离器与上升区局部气含率和整体平均气含率的关系.
    • 高美伊; 郭秋丽; 刘永民; 赵德智
    • 摘要: 对于空气-水和空气-水-阴离子交换树脂物系,在体积为130 L(内径为290 mm、高为2000 mm)气升式旋流反应器(HALR)中,当表观气速为0~0.84 cm/s时,研究了固体装载量、颗粒粒径、有无分离器、不同导流筒形式对体积传质系数的变化规律.结果表明,三相物系的体积传质系数大于两相的体积传质系数;随着颗粒粒径的增大,体积传质系数呈下降趋势;有分离器的体积传质系数大于无分离器的;表观气速较小时,带翅片导流筒的体积传质系数最大.
    • 邱爽; 高美伊; 郭秋丽; 戴咏川; 刘永民
    • 摘要: 在内径0.090m总高2.4m的旋流气升式环流反应器中,以空气作气相,分别以水、1%(v)正丁醇水溶液和异丙醇水溶液(浓度(v)为1%、5%、10%)为液相,在上升区表观气速为0.46~2.53cm·s-1范围内,研究了底部间隙、翅片数量、异丙醇水溶液和正丁醇水溶液物系对上升区气含率和下降区液体速度随上升区表观气速的变化规律.结果表明:上升区气含率随底部间隙的减小而增加,液体循环速度则减小;翅片数越少,循环液速越高,3翅片的下降区液体速度比4翅片的平均高约28.3%;气含率在低气速时3翅片的大于4翅片的,高气速时4翅片的大于3翅片的;醇的浓度增加,气含率增加;1%异丙醇水溶液物系的气含率、循环速度均小于1%正丁醇水溶液物系.%Average gas holdup in riser and liquid superficial velocities in downcommer were studied on different bottom tap, the numbers of helical sheets, the bulk concentration of 1(v )% n-butanol and isopropanol aqueous solution (1% 、5% 、10%v.),type of alcohols, with superficial gas velocities of riser, for the systems of the air being gas phase and water, isopropanol and n-butanol aqueous solution being liquid phase,respectively, in the helical flow airlift loop reactor with 0.09m in inner diameter and 2.40m in total height. The superficial gas velocities in riser was in the range of 0.46~2.53cm·s-1. The results show, that average gas holdup in riser was increased and the liquid superficial velocities in downcommer was decreased with the decreasing of bottom tap.The larger the liquid superficial velocities was, the less the numbers of helical sheets was. The liquid velocities of 3 helical sheets was more average 28.3% than the one of 4 helical sheets.The gas holdup in 3 helical sheets was more than the one of 4 helical sheets at the lower superficial gas rates, and the opposite at the higher superficial gas rates. The gas holdups increased with increasing of the concentration of isopropanol aqueous solution. The gas holdup and the liquid velocities of the 1% isopropanol aqueous solution were smaller than ones of the 1% n-butanol aqueous solution.
    • 张宇; 王帅; 刘永民
    • 摘要: 在内径00.90m,高24.m的旋流气升式环流反应器中,以空气为气相,分别以水,Φ(异丙醇)=1%、5%、10%,Φ(正丁醇)=1%和Φ(乙醇)=1%的水溶液为液相,在表观气速为0.46~1.86cm/s,研究了在不同底部间隙、翅片数量、Φ(异丙醇)、醇的类型条件下局部和总体气含率随表观气速的变化情况.结果表明:所有物系,表观气速一定,上升区局部气含率在轴向高度上基本不变,只随表观气速的增加而增加;随着 Φ(异丙醇)的增加,气含率随之增加.对于体积分数均为1%的乙醇、异丙醇、正丁醇水溶液的两相物系,总体气含率乙醇物系最大,正丁醇次之,异丙醇的最小.在表观气速小于0.931 cm/s时,导流筒上固定的翅片数越少气含率越高,而在表观气速大于0.931 cm/s时,则有相反的结果;其它条件相同时,底部间隙越小气含率越大.%Total gas holdup and local gas holdup in riser were studied on different bottom tap ,the numbers of helical sheets ,the volumetric concentration of isopropanol aqueous solution (1% ,5% , 10% ) ,type of alcohols ,with sperficial gas velocities ,for the systems of the air being gas phase and wa-ter ,isopropanol ,n-butanol and ethanolaqueous solution being liquid phase ,respectively ,in the helical-flow airlift loop reactor (HALR) with 90 mm in inner diameter and 2400 mm in height .The superficial gas velocities was in the range of 0.46~1. 86 cm/s .The results showed ,that the local gas holdup was changed a little along the axial height and increased only with superficial gas velocities for any systems used .The gas holdups increased with increasing of the concentration of isopropanol aqueous solution . The total gas holdups of ethanol aqueous solution was largest ,one of the n-butanol was smaller and one of the isopropanol was minimum for the alcohols .The less the numbers of helical sheets was ,the larger the gas holdups was ,at the gas velocities was less than 0.931 cm/s .The more the numbers of helical sheets was ,the larger the gas holdups was ,at the gas velocities was more than 0 .931 cm/s .The less the bottom tap ,the larger the gas holdups at other identical conditions .
    • 李博; 赵德智; 刘永民; 郭秋丽; 贾宝军
    • 摘要: 为了进一步强化气升式环流反应器的流动、传质、混合性能,设计开发了新型的旋片环隙气升式环流反应器.该反应器以有机玻璃为材料,外管高1 800 mm、内径90 mm、导流筒总长1 600 mm、主体直径50 mm,其特征是导流筒上附有若干组旋片,每组旋片间距110 mm.在表观气速为0.37~2.59 cm/s的条件下,研究了底部间隙、固体装载量以及不同分配器材料对该反应器内气含率的影响规律.结果表明,在相同轴向高度的条件下,随着表观气速的增大,上升区局部气含率增大;固体装载量增加,上升区局部气含率增加;底部间隙变大,低气速下局部气含率变大;在高气速下,气含率变小.在较低表观气速下,微孔分布器的局部气含率低于高分子材料的局部气含率;当表观气速较高时,结果相反.
    • 林进; 沈浩; 景文珩
    • 摘要: 采用VOF双流体模型对19通道气升式陶瓷膜过滤装置进行气液两相流的流体动力学模拟,研究了曝气孔直径和曝气量对气升式陶瓷膜过滤装置的气含率、环流液速、膜面剪切力及膜管内湍流强度的影响,模拟结果与实验结果的误差在5%~10%之间。结果表明,气升管与降液管的气含率都随曝气量增大而增大,随曝气孔直径减小而增大;环流液速、膜面剪切力及膜管内的湍流强度都随曝气量增大先增大,当曝气量达到400 L·h−1时其增大趋势变缓。通过实验和模拟比较了3种不同孔径的曝气头,环流液速与曝气孔的直径关系不大,仅与曝气量相关,但曝气孔直径越小,其膜面剪切力越大,越有利于过滤过程的进行。%The influences of aerator aperture size and aeration rate on the gas hold-up, liquid circulation velocity, wall shear stress and turbulence intensity in a novel airlift ceramic membrane filtration equipment containing a 19-channel ceramic membrane was investigated by the CFD simulation. Further, the VOF model was adopted to simulate the flow state of the gas-liquid two-phase fluid and the mean error between experiment date and simulation date was 5%—10%. The results demonstrated that the gas hold-up increased with increasing aeration rate and decreasing aerator aperture size. The liquid circulation velocity, wall shear stress and turbulence intensity increased with increasing aeration rate, and the increasing trend became slow after the aeration rate reached 400 L·h−1. For the three aperture aerator with different size, the comparison of experiment and simulation results have indicated that the liquid circulation velocity was only related to the aeration rate, and had little to do with aerator aperture size. Decreasing of the aerator aperture size was conductive to the increasing of the wall shear stress and the filtration process.
    • 沈浩; 张春; 陈超; 景文珩; 邢卫红
    • 摘要: 采用新型的气升式陶瓷膜过滤系统处理油田含聚采出水,通过气液两相流替代单一的液相流动,降低了陶瓷膜处理油田含聚采出水过程的能耗,系统考察了曝气孔大小、曝气量和跨膜压差对膜渗透通量的影响。结果表明,采用孔径为微米级的曝气头曝气使高压气体在多通道膜管内的分布更为均匀,进而有效抑制膜污染和浓差极化,延缓通量衰减。当曝气孔径为1μm时,渗透通量达到最大,且曝气量从300 L·h−1增加到600 L·h−1时,通量显著增加。此外,跨膜压差对膜的渗透通量影响显著,当跨膜压差为0.4 MPa时,渗透通量最佳。陶瓷膜处理油田采出水的出水水质各方面指标数据较为稳定,达到5.1.1回注水标准。最后,计算讨论了气升式陶瓷膜过滤装置的吨水能耗。%A novel airlift ceramic membrane filtration equipment was employed to treat the produced polymer-containing wastewater at oilfield. In the process of treatment on the produced polymer-containing wastewater at oilfield by ceramic membrane filtration, the energy consumption was reduced due to the gas-liquid two phase flow in place of monophase flow of liquid. Effects of aeration pore size, aeration rate and transmembrane pressure on membrane flux were investigated. It showed that the microporous aeration promoted the more homogeneous distribution of gas inside membrane tube, hence inhibited membrane contamination and concentration polarization and the alleviated decay of membrane flux. The maximum flux was achieved under condition of 1μm of aeration pore size, of which the membrane flux increased remarkably with an increase in aeration rate from 300 to 600 L·h−1. Moreover, the transmembrane pressure influenced the membrane flux significantly, with an optimal pressure of 0.4 MPa. The various parameters of quality of the permeated water are stable, which satisfies the requirements of the standard 5.1.1 of reusing water. The energy consumption per ton water of airlift ceramic membrane filtration equipment was also calculated.
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