一种增大气相通量DJ塔板的流体力学性能及工业应用
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摘要
基于塔板与填料空中复合理论,设计出了一种将规整填料与带折边的固定阀(DJ-5型)塔板结合的新型塔板(DJ-5Plus塔板),在内径为600 mm的有机玻璃塔内,以空气-水为物系,对该新型塔板的流体力学性能进行了研究,着重考察了DJ-5 Plus塔板雾沫夹带特点,研究了干板压降、湿板压降、漏液等流体力学性能,并与DJ-5塔板进行了对比。实验结果表明,与DJ-5塔板相比,DJ-5 Plus塔板的雾沫夹带率低50%以上,而干板压降高3%～29%,湿板压降高2%～15%;且DJ-5 Plus塔板的漏液率低15%～20%。DJ-5 Plus塔板在流体力学性能方面表现优良,尤其适用于气相负荷较大的工况。DJ-5 Plus塔板已经成功应用于工业实践中的扩能增效改造,达到扩能提产增效的效果。
Based on the spacing packing-combined tray technology,a novel tray(DJ-5 Plus tray was presented. The tray was obtained by combining a common fixed valve tray with flanged valves(DJ-5 tray) and structured packings. The hydraulic performances of these trays were investigated with an air-water system in a plexiglass column with an inner diameter of 600 mm. The entrainment feature of DJ-5 Plus tray was focused and other hydraulic performances of dry plate pressure drop,wet plate pressure drop,and weeping fraction were also involved and compared with those of DJ-5 tray. The results showed that the entrainment rates of DJ-5 Plus tray were lower than those of the common DJ-5 by more than 50%. The dry/wet pressure drops of DJ-5 Plus tray were higher than those of the common DJ-5 tray by 3%-29% and 2%-15%,respectively;while the weeping fractions lower by 15%-20%. As results,DJ-5 Plus tray is potential to be used for high vapor capacity applications for its good hydraulic performances. The DJ-5 Plus tray has been implemented and well operated in a certain industrial revamping case for enhancing capacity and increasing economic benefit.
Based on the spacing packing-combined tray technology,a novel tray(DJ-5 Plus tray was presented. The tray was obtained by combining a common fixed valve tray with flanged valves(DJ-5 tray) and structured packings. The hydraulic performances of these trays were investigated with an air-water system in a plexiglass column with an inner diameter of 600 mm. The entrainment feature of DJ-5 Plus tray was focused and other hydraulic performances of dry plate pressure drop,wet plate pressure drop,and weeping fraction were also involved and compared with those of DJ-5 tray. The results showed that the entrainment rates of DJ-5 Plus tray were lower than those of the common DJ-5 by more than 50%. The dry/wet pressure drops of DJ-5 Plus tray were higher than those of the common DJ-5 tray by 3%-29% and 2%-15%,respectively;while the weeping fractions lower by 15%-20%. As results,DJ-5 Plus tray is potential to be used for high vapor capacity applications for its good hydraulic performances. The DJ-5 Plus tray has been implemented and well operated in a certain industrial revamping case for enhancing capacity and increasing economic benefit.
引文
[1]董军,李建波.塔板技术的发展现状与研究展望[J].石油炼制与化工,2007,38(11):46-51.
[2]赵洪康,王宝华,金君素,等.新型导向立体板填复合塔板的研究与工业应用[J].中国科学:化学,2018,48(6):666-675.
[3]丁梦军,王成习.大通量塔板研究进展[J].化学工程,2010,38(10):37-41.
[4]江山,胡大鹏,金鑫,等.大通量板式塔研究进展[J].化工装备技术,2015,36(5):31-34.
[5]刘继东,谢振山,贺亮,等.立体传质塔板CTST喷射特性的研究[J].高校化学工程学报,2014,28(3):518-523.
[6]唐正强.两种新型塔板与多降液管的实验研究[D].北京:中国石油大学,2008.
[7]李群生,刘旺国,李钊,等.新型导向复合塔板的性能研究[J].石油化工,2009,38(3):870-874.
[8]Chen Guoxiang,Afacan A,Xu C,et al.Performance of combined mesh packing and sieve tray in distillation[J].Can JChem Eng,1990,68:382-386.
[9]俞晓梅,袁孝竞.塔器[M].北京:化学工业出版社,2010:105-113.
[10]Sinderen A H V,Wijn E F,Zanting R W J.Entrainment and maximum vapour flow rate of trays[J].Chem Eng Res Des,2003,81(1):94-107.
[11]王良华,姚克俭,李育敏,等.新型固定阀塔板的流体力学和传质性能研究[J].化学工程,2005,33(2):4-8.
[12]中国石油化工总公司,浙江工业大学.空中复合填料塔板:97103868.6[P].1997-04-03.
[13]万先河.组合导向浮阀塔板的水力学实验及CFD模拟[D].上海:华东理工大学,2018.
[14]任海伦,安登超,朱桃月,等.精馏技术研究进展与工业应用[J].化工进展,2016,35(6):1606-1626.
[15]兰州石油机械研究所.现代塔器技术[M].北京:中国石化出版社,2005:357-360.
[16]姜硕.新型固定阀塔板流体力学实验研究及数值模拟[D].天津:天津大学,2012.
[17]黄雪雷,俞晓梅,李育敏.降液管中水流的扼流现象研究[J].高校化学工程学报,2003,17(6):632-636.
[18]兰州石油机械研究所.现代塔器技术[M].北京:中国石化出版社,2005:56-65.
[2]赵洪康,王宝华,金君素,等.新型导向立体板填复合塔板的研究与工业应用[J].中国科学:化学,2018,48(6):666-675.
[3]丁梦军,王成习.大通量塔板研究进展[J].化学工程,2010,38(10):37-41.
[4]江山,胡大鹏,金鑫,等.大通量板式塔研究进展[J].化工装备技术,2015,36(5):31-34.
[5]刘继东,谢振山,贺亮,等.立体传质塔板CTST喷射特性的研究[J].高校化学工程学报,2014,28(3):518-523.
[6]唐正强.两种新型塔板与多降液管的实验研究[D].北京:中国石油大学,2008.
[7]李群生,刘旺国,李钊,等.新型导向复合塔板的性能研究[J].石油化工,2009,38(3):870-874.
[8]Chen Guoxiang,Afacan A,Xu C,et al.Performance of combined mesh packing and sieve tray in distillation[J].Can JChem Eng,1990,68:382-386.
[9]俞晓梅,袁孝竞.塔器[M].北京:化学工业出版社,2010:105-113.
[10]Sinderen A H V,Wijn E F,Zanting R W J.Entrainment and maximum vapour flow rate of trays[J].Chem Eng Res Des,2003,81(1):94-107.
[11]王良华,姚克俭,李育敏,等.新型固定阀塔板的流体力学和传质性能研究[J].化学工程,2005,33(2):4-8.
[12]中国石油化工总公司,浙江工业大学.空中复合填料塔板:97103868.6[P].1997-04-03.
[13]万先河.组合导向浮阀塔板的水力学实验及CFD模拟[D].上海:华东理工大学,2018.
[14]任海伦,安登超,朱桃月,等.精馏技术研究进展与工业应用[J].化工进展,2016,35(6):1606-1626.
[15]兰州石油机械研究所.现代塔器技术[M].北京:中国石化出版社,2005:357-360.
[16]姜硕.新型固定阀塔板流体力学实验研究及数值模拟[D].天津:天津大学,2012.
[17]黄雪雷,俞晓梅,李育敏.降液管中水流的扼流现象研究[J].高校化学工程学报,2003,17(6):632-636.
[18]兰州石油机械研究所.现代塔器技术[M].北京:中国石化出版社,2005:56-65.