大处理量紧凑型气浮装置的数值模拟

doi:10.16085/j.issn.1000-6613.2016.03.013

化工进展 ›› 2016, Vol. 35 ›› Issue (03): 733-740.DOI: 10.16085/j.issn.1000-6613.2016.03.013

大处理量紧凑型气浮装置的数值模拟

孔祥功¹, 陈家庆¹, 姬宜朋¹, 王春升², 张明², 尚超², 蔡小垒¹, 刘美丽¹

1 北京石油化工学院机械工程学院, 北京 102617;
2 中海油研究总院技术研发中心, 北京 100027

收稿日期:2015-09-11 修回日期:2015-10-18 出版日期:2016-03-05 发布日期:2016-03-05
通讯作者: 陈家庆,教授,博士生导师。E-mail:Jiaqing@bipt.edu.cn.
作者简介:孔祥功(1989-),男,硕士研究生,主要从事多相流高效分离技术与设备研究工作。E-mail:kongxianggong@bipt.edu.cn
基金资助:
国家自然科学基金(51079006)及北京市属高等学校“长城学者”培养计划(CIT&TCD20150317)项目。

Numerical simulation of flow field and structural and operational parameters in a large capacity compact flotation unit(CFU)

KONG Xianggong¹, CHEN Jiaqing¹, JI Yipeng¹, WANG Chunsheng², ZHANG Ming², SHANG Chao², CAI Xiaolei¹, LIU Meili¹

1 School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China;
2 CNOOC Research Center, Beijing 100027, China

Received:2015-09-11 Revised:2015-10-18 Online:2016-03-05 Published:2016-03-05

摘要/Abstract

摘要： 目前鲜有关于大处理量气浮装置结构设计研究方面的报道,气浮装置国产化研究进程缓慢。为了解决这一问题,本文以自主研发的处理量为120m³/h 紧凑型气浮装置为计算模型,采用Eulerian 模型和RNG k-ε 湍流模型,运用Fluent 对其三维流场进行了数值模拟研究。分别研究了内筒高度、半径间隙及入口管径等结构参数和含油量、处理量等操作参数的影响,以便考察和优化气浮装置的分离性能。结构参数影响的数值模拟结果表明: 随着半径间隙的减小,除油率先增大后减小;随着入口管径的减小,除油率先减小后增大;改变内筒高度对除油率的影响较小。操作参数影响的数值模拟结果表明,装置的操作弹性相对较大,对水质水量一定程度的波动具有良好的适应性。

关键词: 紧凑型气浮装置, 含油污水, 分离效率, 数值模拟, 工程放大

Abstract: There were few reports about the structure design of large capacity floating device at present. The pace for domestication of flotation units was slow. In this paper,the self-developed compact flotation unit(CFU) with 120m³/h capacity was chosen as a simulation model. 3D flow fields were analyzed using Eulerian model and RNG k-ε turbulence model. The structural parameters such as inner cylinder height,radial clearance,inlet tube diameter were examined,as well as the influences of operational parameters including oil wastewater treatment capacity and inlet oil content,in order to investigate and optimize de-oiling performance of the unit. Results of structural parameters analysis showed that the inner cylinder height has less influence on separation efficiency. As radial clearance decreases,oil-water separation efficiency raises then declines. As the inlet tube diameter decreases, de-oil efficiency decreases first then increases. Results of operational parameters simulations indicated that CFU has a relatively large operational flexibility and good adaptability to a certain degree of fluctuations on water quality and quantity.

Key words: compact flotation unit, oily water, separation efficiency, numerical simulation, engineering scale-up

中图分类号:

孔祥功, 陈家庆, 姬宜朋, 王春升, 张明, 尚超, 蔡小垒, 刘美丽. 大处理量紧凑型气浮装置的数值模拟[J]. 化工进展, 2016, 35(03): 733-740.

KONG Xianggong, CHEN Jiaqing, JI Yipeng, WANG Chunsheng, ZHANG Ming, SHANG Chao, CAI Xiaolei, LIU Meili. Numerical simulation of flow field and structural and operational parameters in a large capacity compact flotation unit(CFU)[J]. Chemical Industry and Engineering Progree, 2016, 35(03): 733-740.

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大处理量紧凑型气浮装置的数值模拟

Numerical simulation of flow field and structural and operational parameters in a large capacity compact flotation unit(CFU)

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