Simulation and analysis of MED-TVC combined treatment system for treating oilfield wastewater with Aspen Plus

doi:10.11894/1005-829x.2014.35(2).086

Abstract

Abstract:

In order to achieve the effective and clean treatment of oilfield wastewater, a combined treatment system of multiple effect desalination(MED) and thermal vapor compressor(TVC) has been proposed. A verified process flow model of the MED-TVC system is established with Aspen Plus instrument. On the basis of this, the optimization effects of TVC process on MED process are analyzed. And the influence of operating steam pressure and TVC initia- ting location on the thermal performance of the system are studied. The results indicate that both of adding TVC device and increasing its operating steam pressure can effectively improve MED system performance. Optimizing TVC initiating location can increase 12% of water-making ratio of the system, and decrease 22.54% of condensate flow.

Key words: oilfield wastewater, Aspen Plus, multiple effect desalination, thermal vapor compressor

摘要：

为实现油田污水的高效洁净处理, 提出了多效蒸发(multiple effect desalination, MED) 和蒸汽热力喷射器(thermal vapor compressor, TVC)联合处理系统。应用Aspen Plus工具建立了MED-TVC系统的工艺流程模型, 并进行了模型验证。在此基础上, 分析了TVC对MED工艺的优化效果, 研究了工作蒸汽压力和TVC引射位置对系统热力性能的影响。研究结果表明:增加TVC装置及提高其工作蒸汽压力均能有效改善MED系统性能;优化TVC引射位置可以使系统造水比提高12%, 冷凝水流量减少22.54%。

关键词: 油田污水, Aspen Plus, 多效蒸发, 蒸汽喷射器

CLC Number:

TK124

Zhou Yihui, Jiang Fengyin, Bi Mingshu, Wang Yu'nan. Simulation and analysis of MED-TVC combined treatment system for treating oilfield wastewater with Aspen Plus[J]. INDUSTRIAL WATER TREATMENT, 2015, 35(2): 86-89.

周一卉, 姜凤银, 毕明树, 王宇楠. 油田污水MED-TVC联合处理系统的Aspen Plus模拟与分析[J]. 工业水处理, 2015, 35(2): 86-89.

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https://www.iwt.cn/EN/Y2015/V35/I2/86

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