LAPSE:2024.1025v1
Published Article
LAPSE:2024.1025v1
Numerical Simulation and Environmental Impact Assessment of VOCs Diffusion Based on Multi-Emission Sources in the Natural Gas Purification Plant
June 7, 2024
Abstract
The rising number of natural gas purification plants has raised concerns about safety and environmental issues related to VOC (Volatile Organic Compounds) leakage. Therefore, it is crucial to conduct in-depth research on oil vapor emission patterns in these plants. Taking a typical natural gas purification plant as an example, a 1:1 scale model was established. Using methanol as the simulated medium, a study was conducted to investigate the impact of multiple leaks on the dispersion process of VOCs at the plant, combining field sampling with numerical simulation. The results indicate that wind speed influences the concentration of oil vapor, particularly on the leeward side, where vortex and reflux phenomena occur. The area of high concentration of oil vapor at v = 4 m·s−1 is eight times that at v = 8 m·s−1. Gravity and eddy currents contribute to the accumulation of oil vapor, especially closer to the central area of the plant where surrounding buildings obstruct dispersion. Smaller distances between leakage sources result in higher concentrations of oil vapor in the central region, leading to a larger affected area in the event of an accident. The study holds significant practical significance for the research, prevention, and management of leakage and dispersion incidents.
The rising number of natural gas purification plants has raised concerns about safety and environmental issues related to VOC (Volatile Organic Compounds) leakage. Therefore, it is crucial to conduct in-depth research on oil vapor emission patterns in these plants. Taking a typical natural gas purification plant as an example, a 1:1 scale model was established. Using methanol as the simulated medium, a study was conducted to investigate the impact of multiple leaks on the dispersion process of VOCs at the plant, combining field sampling with numerical simulation. The results indicate that wind speed influences the concentration of oil vapor, particularly on the leeward side, where vortex and reflux phenomena occur. The area of high concentration of oil vapor at v = 4 m·s−1 is eight times that at v = 8 m·s−1. Gravity and eddy currents contribute to the accumulation of oil vapor, especially closer to the central area of the plant where surrounding buildings obstruct dispersion. Smaller distances between leakage sources result in higher concentrations of oil vapor in the central region, leading to a larger affected area in the event of an accident. The study holds significant practical significance for the research, prevention, and management of leakage and dispersion incidents.
Record ID
Keywords
multiple emission sources, natural gas purification plant, numerical simulation, oil vapor diffusion, superimposed effect
Subject
Suggested Citation
Ge Y, Huang W, Li X, Xu Z, Yang Q, Zhang C, Zhou N, Kong X, Tian X. Numerical Simulation and Environmental Impact Assessment of VOCs Diffusion Based on Multi-Emission Sources in the Natural Gas Purification Plant. (2024). LAPSE:2024.1025v1
Author Affiliations
Ge Y: Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Engineering Technology Research Center for Oil Vapor Recovery, Changzhou University, Changzhou 213164, China
Huang W: Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Engineering Technology Research Center for Oil Vapor Recovery, Changzhou University, Changzhou 213164, China [ORCID]
Li X: Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Engineering Technology Research Center for Oil Vapor Recovery, Changzhou University, Changzhou 213164, China
Xu Z: Institute of Oil and Gas Technology, PetroChina Changqing Oilfield Co., Xi’an 710016, China
Yang Q: Institute of Oil and Gas Technology, PetroChina Changqing Oilfield Co., Xi’an 710016, China
Zhang C: Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Engineering Technology Research Center for Oil Vapor Recovery, Changzhou University, Changzhou 213164, China
Zhou N: Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Engineering Technology Research Center for Oil Vapor Recovery, Changzhou University, Changzhou 213164, China
Kong X: Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Engineering Technology Research Center for Oil Vapor Recovery, Changzhou University, Changzhou 213164, China
Tian X: Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Engineering Technology Research Center for Oil Vapor Recovery, Changzhou University, Changzhou 213164, China
Huang W: Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Engineering Technology Research Center for Oil Vapor Recovery, Changzhou University, Changzhou 213164, China [ORCID]
Li X: Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Engineering Technology Research Center for Oil Vapor Recovery, Changzhou University, Changzhou 213164, China
Xu Z: Institute of Oil and Gas Technology, PetroChina Changqing Oilfield Co., Xi’an 710016, China
Yang Q: Institute of Oil and Gas Technology, PetroChina Changqing Oilfield Co., Xi’an 710016, China
Zhang C: Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Engineering Technology Research Center for Oil Vapor Recovery, Changzhou University, Changzhou 213164, China
Zhou N: Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Engineering Technology Research Center for Oil Vapor Recovery, Changzhou University, Changzhou 213164, China
Kong X: Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Engineering Technology Research Center for Oil Vapor Recovery, Changzhou University, Changzhou 213164, China
Tian X: Jiangsu Provincial Key Laboratory of Oil and Gas Storage and Transportation Technology, Engineering Technology Research Center for Oil Vapor Recovery, Changzhou University, Changzhou 213164, China
Journal Name
Processes
Volume
12
Issue
2
First Page
364
Year
2024
Publication Date
2024-02-09
ISSN
2227-9717
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PII: pr12020364, Publication Type: Journal Article
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LAPSE:2024.1025v1
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https://doi.org/10.3390/pr12020364
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Jun 7, 2024
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