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Simulation of bubble column reactors using CFD coupled with a population balance model

Tiefeng WANG

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 2,   Pages 162-172 doi: 10.1007/s11705-009-0267-5

Abstract: Bubble columns are widely used in chemical and biochemical processes due to their excellent mass andDue to the importance of the bubble behavior, the bubble size distribution must be considered in theThe population balance model (PBM) is an effective approach to predict the bubble size distribution,Bubble breakup and coalescence models due to different mechanisms are discussed.in high gas holdup, and interphase forces of bubble swarms.

Keywords： bubble column     computational fluid dynamics     bubble breakup and coalescence     population balance model     bubble    

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Experimental study on bubble behavior and CFD simulation of large-scale slurry bubble column reactor

Haoyi SUN, Tao LI, Weiyong YING, Dingye FANG

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 515-522 doi: 10.1007/s11705-010-0516-7

Abstract: Slurry bubble column reactors (SBCR) is a three-phase fluidized reactor with outstanding advantages comparedIn this paper, an experiment was conducted to investigate the bubble behavior in SBCR with a height ofBubble rise velocity, bubble diameter, and gas holdup in different radial and axial positions are measured

Keywords： SBCR     four-channel conductivity probe     hydrodynamics     CFD    

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Experimental study on the stratum applicability and mechanisms of bubble–slurry for earth pressure balance

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 9,   Pages 1387-1399 doi: 10.1007/s11709-023-0005-y

Abstract: The slump, volume stability, and permeability test of bubble–slurry-conditioned sand was conducted toexamine the conditioning effect, and the stratum applicability of bubble–slurry was determined fromIt was found that the conditioning effect of bubble–slurry in coarse gravel soil was excellent and couldThe main stabilization mechanism of bubble–slurry is that bentonite particles provide a space barrierAnd three seepage modes of bubble–slurry-conditioned sand were innovatively defined, and the occurrence

Keywords： EPB shield     bubble–slurry     soil conditioning     stability     permeability    

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The role of single deformed bubble on porous foam tray with submerged orifices on the mass transfer enhancement

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2127-2143 doi: 10.1007/s11705-023-2363-3

Abstract: liquid encroaching on the gas channels causes the increasing orifices velocity, which makes the trailing bubbleeasily detach from the midst of the leading bubble and causes pairing coalescence.

Keywords： bubble formation     porous submerged orifices     process intensification     foam tray    

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Synchronous observation of rising soluble bubble through quiescent solution

Yifu ZHANG , Shuai TIAN , Weizhong LI , Yongchen SONG ,

Frontiers in Energy 2009, Volume 3, Issue 3,   Pages 307-312 doi: 10.1007/s11708-009-0028-7

Abstract: A model was set up to describe the behavior of the bubble in a visual experimental system in which ahigh-speed camera rose instantaneously with the movement of the bubble.A series of trajectory videos about the bubble were recorded by a computer linked to the camera.The trajectory, volume changes and rate of mass transfer of the bubble were obtained by the CIPT.With the volume decreasing, the disturbed behavior of the bubble becomes tempered.

Keywords： soluble bubble     mass transfer     synchronous observation     computer image processing    

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Study on direct alcohol/ether fuel synthesis process in bubble column slurry reactor

Zhen CHEN, Haitao ZHANG, Weiyong YING, Dingye FANG

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 461-471 doi: 10.1007/s11705-010-0517-6

Abstract: 25 experimental data, and a steady-state one-dimensional mathematical model was further developed in bubblecolumn slurry reactor (BCSR), which was assumed that the bubble phase was plug flow, and the liquid

Keywords： syngas     alcohol/ether fuel     slurry catalyst     bubble column slurry reactor     global kinetics     mathematical model    

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Investigation of bubble diameter and flow regime between water and dilute aqueous ethanol solutions in

Baharak SAJJADI, Mostafa Keshavarz MORAVEJI, Reza DAVARNEJAD

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 2,   Pages 194-202 doi: 10.1007/s11705-010-1019-2

Abstract: In this study, the effect of ethanol addition into pure water and its concentration on bubble diameterBubble size distribution was measured by photography and picture analysis at various concentrations ofAlcohol concentration enhancement caused bubble diameter to decrease.

Keywords： airlift rector     bubble diameter     gas hold-up     flow regime     ethanol    

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Feasibility of bubble surface modification for natural organic matter removal from river water using

Yulong Shi, Jiaxuan Yang, Jun Ma, Congwei Luo

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 6, doi: 10.1007/s11783-017-0954-2

Abstract: A novel, functionalized bubble surface can be obtained in dissolved air flotation (DAF) by dosing chemicalsIn this study, different cationic chemicals were used as bubble surface modifiers, and their effectsThe results showed that chitosan was the most promising bubble modifier compared with a surfactant andPositive bubble modification provides an alternative approach for DAF to enhance NOM removal.

Keywords： Bubble surface modification     Chitosan     Disinfection by-product     Dissolved air flotation     Organic fraction    

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Numerical simulation of micro scale flowing and boiling

Wen WANG, Rui ZHUAN,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 396-401 doi: 10.1007/s11708-009-0049-2

Abstract: Numerical simulations of flowing and boiling in micro channels are presented, including the modeling of bubble

Keywords： volume-of-fluid (VOF)     micro channel     nucleate boiling     bubble dynamics     simulation    

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Synergistic promotion of particulate matter reduction and production performance via adjusting electrochemical reactions in the zinc electrolysis industry

Frontiers of Environmental Science & Engineering 2024, Volume 18, Issue 1, doi: 10.1007/s11783-024-1762-0

Abstract:

● Electrolytic PM can be reduced by controlling operation parameters.

Keywords： Zinc electrolysis     Particulate matter     Energy consumption     Operating parameters     Bubble characteristic    

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Removal of SO

Xiaolei LI, Chunying ZHU, Youguang MA

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 2,   Pages 185-191 doi: 10.1007/s11705-013-1326-5

Abstract: and SO by ammonium bicarbonate aqueous solution as absorbent was investigated experimentally in a bubble

Keywords： SO2 removal     bubble column reactor     removal rate     ammonium bicarbonate     absorbent    

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Development of electrorheological chip and conducting polymer-based sensor

Xianzhou ZHANG, Weihua LI, Weijia WEN, Yanzhe WU, Gordon WALLACE,

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 4,   Pages 393-396 doi: 10.1007/s11465-009-0043-8

Abstract: This paper presents the development of an integrated sensor using two types of smart materials: electrorheological (ER) fluids and conducting polymers (CPs). The developed ER chip worked as an actuator, and it was driven by different voltages and control frequencies. When the four electrodes are controlled synchronously, the diaphragm acts as a vibrator whose frequency can be adjusted in accordance with the frequency of the electrical signals. The response signals of the CP sensor were recorded, and its properties were analyzed. Experimental results show that the amplitude decreases monotonically when the frequency increases, owing to the time delay in the pressure buildup in the ER chip. However, the displacement fluctuation of the diaphragm below 20Hz can be detected clearly even if the value is very low. When the vibration frequency is larger than 20Hz, the CP sensor can hardly detect the displacement fluctuation. Thus, the upper limit frequency that the CP sensor can detect is about 20Hz. The practical applications of this microdevice are also discussed.

Keywords： electrorheological (ER) fluids     conducting polymer (CP)     polydimethylsioxane (PDMS)     driving frequency     amplitude     bubble    

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Gas marbles: ultra-long-lasting and ultra-robust bubbles formed by particle stabilization

Frontiers of Chemical Science and Engineering   Pages 1681-1687 doi: 10.1007/s11705-022-2180-0

Abstract: Bubbles and foams are ubiquitous in daily life and industrial processes. Studying their dynamic behaviors is of key importance for foam manufacturing processes in food packaging, cosmetics and pharmaceuticals. Bare bubbles are inherently fragile and transient; enhancing their robustness and shelf lives is an ongoing challenge. Their rupture can be attributed to liquid evaporation, thin film drainage and the nuclei of environmental dust. Inspired by particle-stabilized interfaces in Pickering emulsions, armored bubbles and liquid marble, bubbles are protected by an enclosed particle-entrapping liquid thin film, and the resultant soft object is termed gas marble. The gas marble exhibits mechanical strength orders of magnitude higher than that of soap bubbles when subjected to overpressure and underpressure, owing to the compact particle monolayer straddling the surface liquid film. By using a water-absorbent glycerol solution, the resulting gas marble can persist for 465 d in normal atmospheric settings. This particle-stabilizing approach not only has practical implications for foam manufacturing processes but also can inspire the new design and fabrication of functional biomaterials and biomedicines.

Keywords： bubble     particles     interfaces     armored bubble     liquid marble     gas marble     Pickering emulsion    

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Nucleate boiling in two types of vertical narrow channels

Lei GUO, Shusheng ZHANG, Lin CHENG

Frontiers in Energy 2011, Volume 5, Issue 3,   Pages 250-256 doi: 10.1007/s11708-010-0128-4

Abstract: To explore the mechanism of boiling bubble dynamics in narrow channels, we investigate 2-mm wide I- andThe influence of wall contact angle on bubble generation and growth is studied using numerical simulationThe greater the wall contact angle, the larger the bubble-covered area.Therefore, wall thermal resistance increases, bubble nucleation is suppressed, and the heat transferThe generation of bubbles dramatically disturbs the boundary layer, and the bubble bottom micro-layer

Keywords： nucleate boiling     narrow channel     numerical simulation     bubble dynamics    

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Removal of dyes from wastewater by growing fungal pellets in a semi-continuous mode

Tao Lu, Qilei Zhang, Shanjing Yao

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 3,   Pages 338-345 doi: 10.1007/s11705-017-1644-0

Abstract: To increase the efficiency of dye removal from wastewater using mycelial pellets, a bubble column reactorThe bubble column reactor was utilized to study the batch dye-removal efficiency of mycelial pellets.

Keywords： dye     mycelial pellets     marine fungus     bubble column reactor     semi-continuous biosorption    

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Title Author Date Type Operation

Simulation of bubble column reactors using CFD coupled with a population balance model

Tiefeng WANG

Journal Article

Experimental study on bubble behavior and CFD simulation of large-scale slurry bubble column reactor

Haoyi SUN, Tao LI, Weiyong YING, Dingye FANG

Journal Article

Experimental study on the stratum applicability and mechanisms of bubble–slurry for earth pressure balance

Journal Article

The role of single deformed bubble on porous foam tray with submerged orifices on the mass transfer enhancement

Journal Article

Synchronous observation of rising soluble bubble through quiescent solution

Yifu ZHANG , Shuai TIAN , Weizhong LI , Yongchen SONG ,

Journal Article

Study on direct alcohol/ether fuel synthesis process in bubble column slurry reactor

Zhen CHEN, Haitao ZHANG, Weiyong YING, Dingye FANG

Journal Article

Investigation of bubble diameter and flow regime between water and dilute aqueous ethanol solutions in

Baharak SAJJADI, Mostafa Keshavarz MORAVEJI, Reza DAVARNEJAD

Journal Article

Feasibility of bubble surface modification for natural organic matter removal from river water using

Yulong Shi, Jiaxuan Yang, Jun Ma, Congwei Luo

Journal Article

Numerical simulation of micro scale flowing and boiling

Wen WANG, Rui ZHUAN,

Journal Article

Synergistic promotion of particulate matter reduction and production performance via adjusting electrochemical reactions in the zinc electrolysis industry

Journal Article

Removal of SO

Xiaolei LI, Chunying ZHU, Youguang MA

Journal Article

Development of electrorheological chip and conducting polymer-based sensor

Xianzhou ZHANG, Weihua LI, Weijia WEN, Yanzhe WU, Gordon WALLACE,

Journal Article

Gas marbles: ultra-long-lasting and ultra-robust bubbles formed by particle stabilization

Journal Article

Nucleate boiling in two types of vertical narrow channels

Lei GUO, Shusheng ZHANG, Lin CHENG

Journal Article

Removal of dyes from wastewater by growing fungal pellets in a semi-continuous mode

Tao Lu, Qilei Zhang, Shanjing Yao

Journal Article