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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   Pages 1387-1399 doi: 10.1007/s11709-023-0005-y

Abstract: In this study, an anionic surfactant was used to foam in bentonite slurry to form bubble–slurry to maximizeThe 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 barrier

Keywords： EPB shield     bubble–slurry     soil conditioning     stability     permeability    

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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: The recent studies of direct alcohol/ether synthesis process in slurry reactors were reviewed, and theglobal kinetics model for direct dimethyl ether (DME) synthesis from syngas over a novel Cu-Zn-Al-Zr slurry25 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 liquidfavorable to the increase of CO conversion, selectivity of dimethyl ether, product yield and height of slurry

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

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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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Process Intensification in Pneumatically Agitated Slurry Reactors Review

Shujun Geng, Zai-Sha Mao, Qingshan Huang, Chao Yang

Engineering 2021, Volume 7, Issue 3,   Pages 304-325 doi: 10.1016/j.eng.2021.03.002

Abstract:

Pneumatically agitated slurry reactors, including bubble column reactors and airlift loop reactorsTo further improve the performance of slurry reactors (i.e., mixing and mass/heat transfer) and to satisfytemperature control, reduction of back-mixing, and product separation), the process intensification of slurryprocess-intensification methods for mixing and separation that allow continuous production in these slurryFinally, it presents conclusions and perspectives on the design of industrial slurry reactors.

Keywords： Slurry reactors     Pneumatic agitation     Bubble column     Airlift loop reactor     Process intensification     Solid    

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Experimental study on slurry-induced fracturing during shield tunneling

Teng WANG, Dajun YUAN, Dalong JIN, Xinggao LI

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 333-345 doi: 10.1007/s11709-021-0718-8

Abstract: Facial support in slurry shield tunneling is provided by slurry pressure to balance the external earthHydraulic fracturing may occur and cause a significant decrease in the support pressure if the slurryPreventing the occurrence of hydraulic fracturing in a slurry shield requires investigating the effectsIn this study, a hydraulic fracturing apparatus was developed to test the slurry-induced fracturing ofsample parameters and loading conditions, including types of holes, unconfined compressive strength, slurry

Keywords： slurry shield tunneling     hydraulic fracturing test     fracturing pressure     fracture dip     unconfined compressivestrength     slurry viscosity    

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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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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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Copper fractal growth during recycling from waste printed circuit boards by slurry electrolysis

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1405-7

Abstract:

• Copper fractal growth was observed during WPCBs recycling by slurry

Keywords： Dendritic copper     Fractal growth     WPCBs     Slurry electrolysis    

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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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Kinetic study of hydrodesulfurization of coker gas oil in a slurry reactor

Haiding XIANG, Tiefeng WANG

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 2,   Pages 139-144 doi: 10.1007/s11705-013-1323-8

Abstract: In this work, we studied the hydrodesulfurization (HDS) of CGO in a slurry reactor.A macro reaction kinetic model was established for the HDS of CGO in the slurry reactor.

Keywords： coker gas oil     hydrodesulfurization     slurry reactor     reaction kinetic 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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Numerical simulation on flow of ice slurry in horizontal straight tube

Shengchun LIU,Ming SONG,Ling HAO,Pengxiao WANG

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 201-207 doi: 10.1007/s11708-017-0451-0

Abstract: Numerical simulation on flow of ice slurry in horizontal straight tubes was conducted in this paper toinfluence of the diameter and length of tubes, the ice packing factors (IPF) and the flow velocity of ice slurryIt could also be concluded that future rheological model of ice slurry should be considered in three

Keywords： ice slurry     horizontal tubes     numerical simulation     pressure drop     viscosity model    

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Development and demonstration plant operation of an opposed multi-burner coal-water slurry gasification

WANG Fuchen, ZHOU Zhijie, DAI Zhenhua, GONG Xin, YU Guangsuo, LIU Haifeng, WANG Yifei, YU Zunhong

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 251-258 doi: 10.1007/s11708-007-0035-5

Abstract: The features of the opposed multi-burner (OMB) gasification technology, the method and process of the research, and the operation results of a pilot plant and demonstration plants have been introduced. The operation results of the demonstration plants show that when Beisu coal was used as feedstock, the OMB CWS gasification process at Yankuang Cathy Coal Co. Ltd had a higher carbon conversion of 3%, a lower specific oxygen consumption of about 8%, and a lower specific carbon consumption of 2%–3% than that of Texaco CWS gasification at the Lunan Fertilizer Plant. When Shenfu coal was used as feedstock, the OMB CWS gasification process at Hua-lu Heng-sheng Chemical Co. Ltd had a higher carbon conversion of more than 3%, a lower specific oxygen consumption of about 2%, and a lower specific coal consumption of about 8% than that of the Texaco CWS gasification process at Shanghai Coking & Chemical Corporation. The OMB CWS gasification technology is proven by industrial experience to have a high product yield, low oxygen and coal consumption and robust and safe operation.
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Application of gamma-ray attenuation technology in density measurement of a slurry reactor

Jian XU, Weisheng WEI, Kai ZHANG

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 486-490 doi: 10.1007/s11705-010-0509-6

Abstract: Axial density profile of the gas-liquid-solid mixture in a slurry bubble column was measured by gamma-ray

Keywords： slurry reactor     axial density distribution     gamma-ray attenuation technology    

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Research and application on separation technology of slurry and water under sandy-gravel stratum

Wang Guangyu,Sun Shanhui,Su Qinggui

Strategic Study of CAE 2010, Volume 12, Issue 12,   Pages 41-45

Abstract:

This paper gives a summary on application technology of slurry and water

Keywords： slurry tunnel machine     separation of slurry and water     filter-press    

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Title Author Date Type Operation

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

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

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

Process Intensification in Pneumatically Agitated Slurry Reactors

Shujun Geng, Zai-Sha Mao, Qingshan Huang, Chao Yang

Journal Article

Experimental study on slurry-induced fracturing during shield tunneling

Teng WANG, Dajun YUAN, Dalong JIN, Xinggao LI

Journal Article

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

Tiefeng WANG

Journal Article

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

Journal Article

Copper fractal growth during recycling from waste printed circuit boards by slurry electrolysis

Journal Article

Synchronous observation of rising soluble bubble through quiescent solution

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

Journal Article

Kinetic study of hydrodesulfurization of coker gas oil in a slurry reactor

Haiding XIANG, Tiefeng WANG

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

Numerical simulation on flow of ice slurry in horizontal straight tube

Shengchun LIU,Ming SONG,Ling HAO,Pengxiao WANG

Journal Article

Development and demonstration plant operation of an opposed multi-burner coal-water slurry gasification

WANG Fuchen, ZHOU Zhijie, DAI Zhenhua, GONG Xin, YU Guangsuo, LIU Haifeng, WANG Yifei, YU Zunhong

Journal Article

Application of gamma-ray attenuation technology in density measurement of a slurry reactor

Jian XU, Weisheng WEI, Kai ZHANG

Journal Article

Research and application on separation technology of slurry and water under sandy-gravel stratum

Wang Guangyu,Sun Shanhui,Su Qinggui

Journal Article