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Liu, Fengrong
- Research on Flow Field Distribution and Structure Improvement of Gravity Sedimentation Tank Contained Polymer Sewage in Oilfield
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Authors
Affiliations
1 Key Laboratory of Enhanced Oil Recovery (Ministry of Education), Northeast Petroleum University, Daqing, CN
2 Shandong Oil Transportation Co., Ltd of PetroChina, Rizhao, CN
1 Key Laboratory of Enhanced Oil Recovery (Ministry of Education), Northeast Petroleum University, Daqing, CN
2 Shandong Oil Transportation Co., Ltd of PetroChina, Rizhao, CN
Source
Nature Environment and Pollution Technology, Vol 16, No 1 (2017), Pagination: 225-230Abstract
Gravity sedimentation tank is the key equipment in the process of sewage treatment in oilfield, whose separation performance has a significance in the treatment effect of sewage. In order to analyse the distribution of flow field in gravity sedimentation tank, the 1200m3 gravity sedimentation tank contained polymer sewage in oilfield was simulated. The distribution characteristic of three-dimensional flow in the tank is given. Then through the analysis of fluid trace distribution and the droplets movement, the non-uniformity of the flow field in the tank and existence of swirl flow and back mixing flow are discovered. On the basis of mentioned above, taking the oil removal efficiency as the evaluation index, the structure of liquid distributing device of gravity sedimentation tank is improved. It makes the oil removal efficiency increased by 8.4%.Keywords
Gravity Sedimentation Tank, Oil-Water Separation, Flow Field Analysis, Structure Improvement, Polymer-Contained Sewage.Full Text
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