Choke valves are applied to control the pressure in CO2 pipeline. However, the temperature of fluid would drop rapidly because of Joule-Thomson cooling (JTC), which may cause solid CO2 generate and block the pipe. In this work, a three-dimensional Computational Fluid Dynamic (CFD) model, using the Lagrangian method, Reynold’s Stress Transport model (RSM) for turbulence and stochastic tracking model (STM) for particle trajectory, was developed to predict the gas-solid CO2 flow and deposition characteristics downstream pipeline. The model predictions were in good agreement with the experimental data published in the literature. The effects of particle size, flow velocity and pipeline diameter on the fluid-particle flow characteristics were examined. Results showed that the increase in the flow velocity would cause a decrease in particle deposition ratio and there existed the critical particle size that caused the deposition ratio maximum for each velocity. The paper also presents the effects of particle motion on different deposition regions. Moreover, the main deposition region (the sudden expansion region) is the easy to be blocked by the particles. With the increase in pipeline diameter, the particle deposition ratio was decreasing. In addition, it was recommended for Stokes number to avoid 3-8 St.
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2016 11th International Pipeline Conference
September 26–30, 2016
Calgary, Alberta, Canada
Conference Sponsors:
- Pipeline Division
ISBN:
978-0-7918-5026-8
PROCEEDINGS PAPER
Numerical Investigation of Deposition Characteristics of Solid CO2 During Choked Flow for CO2 Pipelines
Lin Teng,
Lin Teng
China University of Petroleum (East China), Qingdao, China
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Yuxing Li,
Yuxing Li
China University of Petroleum (East China), Qingdao, China
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Hui Han,
Hui Han
China University of Petroleum (East China), Qingdao, China
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Pengfei Zhao,
Pengfei Zhao
China University of Petroleum (East China), Qingdao, China
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Datong Zhang
Datong Zhang
China University of Petroleum (East China), Qingdao, China
Search for other works by this author on:
Lin Teng
China University of Petroleum (East China), Qingdao, China
Yuxing Li
China University of Petroleum (East China), Qingdao, China
Hui Han
China University of Petroleum (East China), Qingdao, China
Pengfei Zhao
China University of Petroleum (East China), Qingdao, China
Datong Zhang
China University of Petroleum (East China), Qingdao, China
Paper No:
IPC2016-64057, V002T02A004; 8 pages
Published Online:
November 10, 2016
Citation
Teng, L, Li, Y, Han, H, Zhao, P, & Zhang, D. "Numerical Investigation of Deposition Characteristics of Solid CO2 During Choked Flow for CO2 Pipelines." Proceedings of the 2016 11th International Pipeline Conference. Volume 2: Pipeline Safety Management Systems; Project Management, Design, Construction and Environmental Issues; Strain Based Design; Risk and Reliability; Northern Offshore and Production Pipelines. Calgary, Alberta, Canada. September 26–30, 2016. V002T02A004. ASME. https://doi.org/10.1115/IPC2016-64057
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