环流预汽提组合旋流快分系统分离性能的实验研究
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摘要
针对新型旋流快分器与密相环流预汽提器的优良特性,将两者耦合成一套完整的快分系统.通过大型冷模实验,研究了该快分系统的分离特性,并考察了操作条件对系统快分效率及快分压降的影响规律.结果表明,该系统能较好地实现气固高效分离,具有较大的操作弹性和优良的操作稳定性,冷态下分离效率在98.5%以上,最高可达99.93%,快分压降分布合理.根据实验结果,得到该系统分离效率及压降的经验模型,计算值与实验值吻合较好.
In order to achieve the excellent performance of novel vortex quick separator and dense phase circulation pre-stripper, a novel combined system of circulation pre-stripper and vortex quick separator(CVQS) was established. The separation characteristics of CVQS were studied via a large-scale cold model. Moreover, the separation efficiency and pressure drop of vortex quick separator at different operating conditions were analyzed. The results show that the novel system with excellent operational flexibility and stability can separate gas and solid efficiently, its separation efficiency reaches above 98.5%, the maximum efficiency is 99.93%, and the pressure drop of vortex quick separator is reasonably distributed. Then, empirical formulae for estimating the separation efficiency and pressure drop are set up based on the experimental data, the computed and experimental results are in good agreement.
In order to achieve the excellent performance of novel vortex quick separator and dense phase circulation pre-stripper, a novel combined system of circulation pre-stripper and vortex quick separator(CVQS) was established. The separation characteristics of CVQS were studied via a large-scale cold model. Moreover, the separation efficiency and pressure drop of vortex quick separator at different operating conditions were analyzed. The results show that the novel system with excellent operational flexibility and stability can separate gas and solid efficiently, its separation efficiency reaches above 98.5%, the maximum efficiency is 99.93%, and the pressure drop of vortex quick separator is reasonably distributed. Then, empirical formulae for estimating the separation efficiency and pressure drop are set up based on the experimental data, the computed and experimental results are in good agreement.
引文
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[13]许克家.催化裂化提升管出口快分系统的密相环流式预汽提器的研究[D].北京:中国石油大学(北京),1998.81?88.
[14]沈志远,杨利军,刘梦溪,等.中心气升式环流反应器内压力脉动特性的研究[J].中国粉体技术,2014,20(6):1?8.
[15]王德武,卢春喜,严超宇.提升管与气?固环流床层耦合反应器的流体力学特性及流动模型[J].化工学报,2010,61(9):2235?2242.
[16]卢春喜,徐桂根,卢水根,等.用于催化裂化的预汽提式提升管末端快分系统的研究及工业应用[J].石油炼制与化工,2002,33(1):33?37.
[17]孙凤侠.催化裂化沉降器旋流快分系统的流场分析与数值模拟[D].北京:中国石油大学(北京),2004.139?146.
[18]罗晓兰,陈建义,金有海,等.固粒相浓度对旋风分离器性能影响的试验研究[J].工程热物理学报,1992,13(3):282?285.
[2]卢春喜,时铭显.国产新型催化裂化提升管出口快分系统[J].石化技术与应用,2007,25(2):142?146.
[3]卢春喜,时铭显,许克家.带有密相环流预汽提器提升管出口的气固快分方法及设备[P].中国专利:CN1200945A,1998?12?09.
[4]曹占友,时铭显,孙国刚.提升管催化裂化反应系统气固快速分离和气体快速引出方法及装置[P].中国专利:CN1160744A,1997?10?01.
[5]曹占友,时铭显,孙国刚,等.提升管反应系统旋流式气固快速分离和引出方法及装置[P].中国专利:CN1165052A,1997?11?19.
[6]孙凤侠,周双珍,卢春喜,等.催化裂化沉降器多臂式旋流快分系统封闭罩内的流场[J].石油炼制与化工,2003,34(9):59?65.
[7]孙凤侠,卢春喜,时铭显.催化裂化沉降器VQS系统内三维气体速度分布的改进[J].石油炼制与化工,2004,35(2):51?55.
[8]孙凤侠,卢春喜,时铭显.催化裂化沉降器旋流快分系统内气相流场的数值模拟与分析[J].化工学报,2005,56(1):16?23.
[9]孙凤侠,卢春喜,时铭显.旋流快分器内气相流场的实验与数值模拟研究[J].石油大学学报(自然科学版),2005,29(3):106?111.
[10]孙凤侠,卢春喜,时铭显.催化裂化沉降器新型高效旋流快分器内气固两相流动[J].化工学报,2005,56(12):2280?2287.
[11]Onken U,Weiland P.Airlift Fermenter:Construction Behavior and Uses[J].Advances in Biotechnological Processes,1983,1(12):67?95.
[12]刘梦溪,卢春喜.单段高料位气?固密相环流汽提器的密度分布[J].石油化工,2001,30(11):850?854.
[13]许克家.催化裂化提升管出口快分系统的密相环流式预汽提器的研究[D].北京:中国石油大学(北京),1998.81?88.
[14]沈志远,杨利军,刘梦溪,等.中心气升式环流反应器内压力脉动特性的研究[J].中国粉体技术,2014,20(6):1?8.
[15]王德武,卢春喜,严超宇.提升管与气?固环流床层耦合反应器的流体力学特性及流动模型[J].化工学报,2010,61(9):2235?2242.
[16]卢春喜,徐桂根,卢水根,等.用于催化裂化的预汽提式提升管末端快分系统的研究及工业应用[J].石油炼制与化工,2002,33(1):33?37.
[17]孙凤侠.催化裂化沉降器旋流快分系统的流场分析与数值模拟[D].北京:中国石油大学(北京),2004.139?146.
[18]罗晓兰,陈建义,金有海,等.固粒相浓度对旋风分离器性能影响的试验研究[J].工程热物理学报,1992,13(3):282?285.