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An M, Guan X, Yang N. Modeling and optimization of flow distribution in multistage pipe distributors. AIChE J 2021. [DOI: 10.1002/aic.17462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Min An
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering Chinese Academy of Sciences Beijing China
- School of Chemical Engineering University of Chinese Academy of Sciences Beijing China
- Henan Province Supercomputing Center Zhengzhou University Zhengzhou China
| | - Xiaoping Guan
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering Chinese Academy of Sciences Beijing China
- School of Chemical Engineering University of Chinese Academy of Sciences Beijing China
| | - Ning Yang
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering Chinese Academy of Sciences Beijing China
- School of Chemical Engineering University of Chinese Academy of Sciences Beijing China
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Chaoyue L, Shiyu F, Lei X, Xiaotian P, Yan Y. Gas-liquid mass transfer characteristics of aviation fuel scrubbing in an aircraft fuel tank. Sci Rep 2021; 11:15426. [PMID: 34326386 PMCID: PMC8322315 DOI: 10.1038/s41598-021-94786-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 07/14/2021] [Indexed: 11/22/2022] Open
Abstract
Dissolved oxygen evolving from aviation fuel leads to an increase in the oxygen concentration in an inert aircraft fuel tank ullage that may increase the flammability of the tank. Aviation fuel scrubbing with nitrogen-enriched air (NEA) can largely reduce the amount of dissolved oxygen and counteract the adverse effect of oxygen evolution. The gas–liquid mass transfer characteristics of aviation fuel scrubbing are investigated using the computational fluid dynamics method, which is verified experimentally. The effects of the NEA bubble diameter, NEA superficial velocity and fuel load on oxygen transfer between NEA and aviation fuel are discussed. Findings from this work indicate that the descent rate of the average dissolved oxygen concentration, gas holdup distribution and volumetric mass transfer coefficient increase with increasing NEA superficial velocity but decrease with increasing bubble diameter and fuel load. When the bubble diameter varies from 1 to 4 mm, the maximum change of descent rate of dissolved oxygen concentration is 18.46%, the gas holdup is 8.73%, the oxygen volumetric mass transfer coefficient is 81.45%. When the NEA superficial velocities varies from 0.04 to 0.10 m/s, the maximum change of descent rate of dissolved oxygen concentration is 146.77%, the gas holdup is 77.14%, the oxygen volumetric mass transfer coefficient is 175.38%. When the fuel load varies from 35 to 80%, the maximum change of descent rate of dissolved oxygen concentration is 21.15%, the gas holdup is 49.54%, the oxygen volumetric mass transfer coefficient is 44.57%. These results provide a better understanding of the gas and liquid mass transfer characteristics of aviation fuel scrubbing in aircraft fuel tanks and can promote the optimal design of fuel scrubbing inerting systems.
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Affiliation(s)
- Li Chaoyue
- School of Mechanical and Electrical Engineering, Jinling Institute of Technology, Nanjing, China.,Key Laboratory of Aircraft environment control and life support, MIIT, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Feng Shiyu
- Key Laboratory of Aircraft environment control and life support, MIIT, Nanjing University of Aeronautics and Astronautics, Nanjing, China.
| | - Xu Lei
- School of Mechanical and Electrical Engineering, Jinling Institute of Technology, Nanjing, China.,Key Laboratory of Aircraft environment control and life support, MIIT, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Peng Xiaotian
- Key Laboratory of Aircraft environment control and life support, MIIT, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Yan Yan
- College of Mechanical and Electrical Engineering, Xi'an Polytechnic University, Xi'an, China
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Shi J, Guo K, Wang Z, Zheng L, Liu H, Xiang W, Liu C, Li X. Computational Fluid Dynamics Simulation of Hydrodynamics in a Two-Stage Internal Loop Airlift Reactor with Contraction-Expansion Guide Vane. ACS OMEGA 2021; 6:6981-6995. [PMID: 33748612 PMCID: PMC7970565 DOI: 10.1021/acsomega.0c06277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Accepted: 02/18/2021] [Indexed: 06/12/2023]
Abstract
Global circulation and liquid back mixing adversely affect the continuous production of a multistage internal airlift loop reactor. A contraction-expansion guide vane (CEGV) is proposed and combined with a two-stage internal loop airlift reactor (TSILALR) to suppress the liquid back mixing between stages. A computational fluid dynamics (CFD) simulation is conducted to evaluate the performance of the CEGV in the TSILALR. The bubble size distribution and turbulent flow properties in the TSILALR are considered in the CFD simulation by using the population balance model and RNG k-ε turbulence model. The CFD model is validated against the experimental results. The deviations in the gas holdup and mean bubble diameter between the simulation and experimental results are less than 8% and 6%, respectively. The streamlines, flow pattern, bubble size distribution, and axial liquid velocity in the TSILALRs with and without the CEGV at superficial velocities of 0.04 and 0.08 m/s are obtained by CFD simulation. It has been shown that the CEGV generated local circulation flows at each stage instead of a global circulation flow in the TSILALR. The average global gas holdup in the TSILALR with a CEGV increased up to 1.98 times. The global gas holdup increased from 0.045 to 0.101 and the average axial velocity in the riser decreased from 0.314 to 0.241 m/s when the width of the CEGV increased from 50 to 75 mm at the superficial gas velocity of 0.08 m/s.
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Affiliation(s)
- Jiazhen Shi
- School
of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- State
Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Kai Guo
- School
of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- State
Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Zhengchao Wang
- School
of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- State
Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Longyun Zheng
- School
of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- State
Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Hui Liu
- School
of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- State
Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Wenyu Xiang
- School
of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- State
Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Chunjiang Liu
- School
of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- State
Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Xue Li
- The
Institute of Seawater Desalination and Multipurpose Utilization, MNR
(Tianjin), Tianjin 300192, China
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Zhao L, Peng C, Zhang J, Tang Z. Synergistic effect of microbubble flow and light fields on a bionic tree-like photobioreactor. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2020.116092] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Jia S, Cao X, Qian X, Yuan X, Yu KT. A mesoscale method for effective simulation of Rayleigh convection in CO2 storage process. Chem Eng Res Des 2020. [DOI: 10.1016/j.cherd.2020.07.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Li WL, Gao XY, Ouyang Y, Wang JQ, Chu GW, Zou HK, Xiang Y, Chen JF. CFD Analysis of Gas Flow Characteristics and Residence Time Distribution in a Rotating Spherical Packing Bed. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b03625] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Wen J, Sun Q, Sun Z, Gu H. The effect of multi-orifice plate configuration on bubble detachment volume. Chin J Chem Eng 2019. [DOI: 10.1016/j.cjche.2018.09.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Shi W, Yang J, Li G, Yang X, Zong Y, Cai X. Modelling of breakage rate and bubble size distribution in bubble columns accounting for bubble shape variations. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2018.05.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Zhang L, Liu C, He X, Zhang F, Zhang Z. Aerobic oxidation of styrene in functional reactors and computational fluid dynamics simulation. ASIA-PAC J CHEM ENG 2018. [DOI: 10.1002/apj.2206] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Lingling Zhang
- School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
| | - Chengzhi Liu
- School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
| | - Xiangpo He
- School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
| | - Feng Zhang
- School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
| | - Zhibing Zhang
- School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 China
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Modeling and validation of a pilot-scale aqueous mineral carbonation reactor for carbon capture using computational fluid dynamics. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2017.11.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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