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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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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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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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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: Typically, foam combined with polymers and slurry is used to solve spewing.However, in current techniques, slurry, foam, and the other agents are mixed with soil separately, theirIn this study, an anionic surfactant was used to foam in bentonite slurry to form bubble–slurry to maximizethe synergy between bubbles and slurry.The slump, volume stability, and permeability test of bubble–slurry-conditioned sand was conducted to

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 slurrydata, and a steady-state one-dimensional mathematical model was further developed in bubble column slurryfavorable 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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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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Advances in the slurry reactor technology of the anthraquinone process for H

Hongbo Li, Bo Zheng, Zhiyong Pan, Baoning Zong, Minghua Qiao

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1,   Pages 124-131 doi: 10.1007/s11705-017-1676-5

Abstract: This paper overviews the development of the anthraquinone auto-oxidation (AO) process for the production of hydrogen peroxide in China and abroad. The characteristics and differences between the fixed-bed and fluidized-bed reactors for the AO process are presented. The detailed comparison indicates that the production of hydrogen peroxide with the fluidized-bed reactor has many advantages, such as lower operation cost and catalyst consumption, less anthraquinone degradation, higher catalyst utilization efficiency, and higher hydrogenation efficiency. The key characters of the production technology of hydrogen peroxide based on the fluidized-bed reactor developed by the Research Institute of Petroleum Processing, Sinopec are also disclosed. It is apparent that substituting the fluidized-bed reactor for the fixed-bed reactor is a major direction of breakthrough for the production technology of hydrogen peroxide in China.

Keywords： anthraquinone process     fixed-bed reactor     slurry-bed reactor     hydrogen peroxide    

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Aggregating structure in coal water slurry studied by eDLVO theory and fractal dimension

Qiang LI, Qian WANG, Jian HOU, Jiansheng ZHANG, Yang ZHANG

Frontiers in Energy 2023, Volume 17, Issue 2,   Pages 306-316 doi: 10.1007/s11708-021-0736-1

Abstract: Coal water slurry gasification is a main source of hydrogen in the developing hydrogen economy.To expand the application of coal water slurry and gasification process, it is necessary to understandIn this paper, the micro-structure in coal water slurry was studied by extended DLVO (eDLVO) theory andof coals are measured and explained by the aggregating structure and fractal dimension in coal water slurry

Keywords： coal water slurry     extended DLVO (eDLVO)     fractal dimension     stability    

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Synthesis of methanol and ethanol over CuZnAl slurry catalyst prepared by complete liquid-phase technology

Wei HUANG, Linmei YU, Wenhui LI, Zhili MA

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 472-475 doi: 10.1007/s11705-010-0525-6

Abstract: Its main innovative thought lies in preparing slurry catalysts directly from raw solution.Activity tests indicate that the CuZnAl slurry catalyst prepared by the new method can efficiently catalyzeconversion of syngas to ethanol in a slurry reactor, while CO conversion reaches 35.9% and ethanol selectivity

Keywords： methanol     slurry     ethanol     complete liquid-phase technology     CuZnAl catalyst    

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direct electro-Fenton process and bioremediation for the treatment of pyrene-contaminated soil in a slurry

Wendi XU,Shuhai GUO,Gang LI,Fengmei LI,Bo WU,Xinhong GAN

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 6,   Pages 1096-1107 doi: 10.1007/s11783-015-0804-z

Abstract: performance of the DEF-BIO process on the remediation of a pyrene (PYR)-contaminated soil was evaluated in a slurry

Keywords： direct electro-Fenton     bioremediation     slurry reactor     combined process     pyrene    

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Research and application of construction slurry of shield tunnel under water-rich sandy gravel stratum

Deng Hengyi,Xu Xueying,Chen Mingjuan

Strategic Study of CAE 2010, Volume 12, Issue 12,   Pages 79-82

Abstract:

Aiming to the slurry shield construction of underground diameter projectfrom Beijing railway station to Beijing railway west station, the optimum slurry ratio in the conditionwas proposed through the proportional tests, which improved the forming quality and velocity of the slurry

Keywords： slurry shield     sandy gravel stratum     proportion of slurry    

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Research on large slurry shield excavation parameter control under complex conditions

Wang Baiquan,Ren Yong,Jin Zhongxiang,Gu Yanqi

Strategic Study of CAE 2010, Volume 12, Issue 12,   Pages 65-69

Abstract: measures for shield posture control and a brief introduction on synchronized grouting parameters and slurryIn the end, a conclusion on the importance of excavation parameter and slurry density in machine excavation

Keywords： slurry shield     excavation parameter     synchronized grouting     slurry cycling     shield posture    

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Title Author Date Type Operation

Experimental study on slurry-induced fracturing during shield tunneling

Teng WANG, Dajun YUAN, Dalong JIN, Xinggao LI

Journal Article

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

Journal Article

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

Haiding XIANG, Tiefeng WANG

Journal Article

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

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

Advances in the slurry reactor technology of the anthraquinone process for H

Hongbo Li, Bo Zheng, Zhiyong Pan, Baoning Zong, Minghua Qiao

Journal Article

Aggregating structure in coal water slurry studied by eDLVO theory and fractal dimension

Qiang LI, Qian WANG, Jian HOU, Jiansheng ZHANG, Yang ZHANG

Journal Article

Synthesis of methanol and ethanol over CuZnAl slurry catalyst prepared by complete liquid-phase technology

Wei HUANG, Linmei YU, Wenhui LI, Zhili MA

Journal Article

direct electro-Fenton process and bioremediation for the treatment of pyrene-contaminated soil in a slurry

Wendi XU,Shuhai GUO,Gang LI,Fengmei LI,Bo WU,Xinhong GAN

Journal Article

Research and application of construction slurry of shield tunnel under water-rich sandy gravel stratum

Deng Hengyi,Xu Xueying,Chen Mingjuan

Journal Article

Research on large slurry shield excavation parameter control under complex conditions

Wang Baiquan,Ren Yong,Jin Zhongxiang,Gu Yanqi

Journal Article