The Experts below are selected from a list of 141 Experts worldwide ranked by ideXlab platform
Xiaobing Li - One of the best experts on this subject based on the ideXlab platform.
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Research of novel process route and scale-up based on oil-water Separation flotation column
Journal of Water Reuse and Desalination, 2017Co-Authors: Huang, Hongxiang Xu, Lun Wu, Xiaobing Li, Yongtian WangAbstract:A novel process ‘coalescence-airflotation-carrier preferential adsorption’ utilising an oil-water Separation flotation column with a unique structure was used in the oil-water Separation field. The oil-water Separation flotation column contains the Cyclonic Separation and airflotation Separation which has advantages in oily sewage treatment, especially in polymer-flooding-drive oily sewage treatment. In this paper, different dimensions of flotation column with 1 m 3 d −1 , 30 m 3 d −1 and 2,000 m 3 d −1 oil-water Separation systems were investigated. In addition, several operating parameters which impact Separation, such as feeding speed, aeration rate, circulating pressure, adsorbents consumption and frother consumption were also investigated. The optimum operating parameters determined for 1 m 3 d −1 the oil-water Separation flotation column were a feeding speed of 0.042 m 3 h −1 , an aeration rate of 0.10 m 3 h −1 , a coal consumption of 4 (g coal)·(g oil) −1 , a frother consumption of 10 mg L −1 , and a circulating pressure of 0.12 MPa. The novel process cost reduced 55.8% than conventional two-stage air flotation process. In the 2,000 m 3 d −1 oil-water Separation experiment, the oil concentration and the oil removal efficiency of outlet are 23.39 mgL −1 , 97.70%, respectively. Sediment is not produced during the oily sewage treatment using the novel process and flotation column.
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Study of Oil Removal Kinetics using Cyclone-Static Microbubble Flotation Column
Separation Science and Technology, 2014Co-Authors: Hongxiang Xu, Yongtian Wang, Xiaowei Deng, Xiaobing LiAbstract:The Cyclonic-static microbubble flotation column (FCSMC) has dual effects including the Cyclonic Separation and airflotation Separation with advantages in the oily wastewater treatment field such as the small lower limit of the effective Separation size, short Separation time, large handling capacity, and low operating cost, especially the polymer-flooding oily wastewater treatment aspect. In this paper, the Cyclonic Separation function mechanism of the FCSMC was investigated. In addition, several operating parameters which impact oil removal efficiency and kinetics constants such as circulating pressure, the superficial gas velocity and the frother consumption were also investigated. The mathematical model relationship between the Separation kinetics constants and the factors including circulating pressure, gas superficial velocity, and the average bubble diameter was established. Based on the strength by steps, the physical Separation model of the Cyclonic-static microbubble was also established.
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Oil removing efficiency in oil–water Separation flotation column
Desalination and Water Treatment, 2014Co-Authors: Hongxiang Xu, Gan Cheng, Yongtian Wang, Xiaowei Deng, Xiaobing LiAbstract:AbstractAn oil–water Separation flotation column with a unique structure was used in oil–water Separation fields. The oil–water Separation flotation column contains the Cyclonic Separation and airflotation Separation with advantages in the oily sewage treatment field such as low effective Separation size, short Separation time, large handling capacity, and low operating cost, especially in polymer-flooding-drive oily sewage treatment aspect. In this paper, the oil removal efficiencies of the Cyclonic and airflotation sections of the oil–water Separation flotation column were investigated. In addition, several operating parameters which impact Separation such as feeding speed, aeration rate, circulating pressure, underflow split ratio, frother consumption were also investigated. The optimum operating parameters determined for the oil–water Separation flotation column were a feeding speed of 1.50 m3 h−1, an aeration rate of 2.50 m3 h−1, and a circulating pressure of 0.28 MPa. A bottom flow diversion ratio o...
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Cyclonic Separation process intensification oil removal based on microbubble flotation
International journal of mining science and technology, 2013Co-Authors: Hongxiang Xu, Xiaobing LiAbstract:Abstract The Cyclonic-static microbubble flotation column has dual effects including the Cyclonic Separation and floatation Separation with the characteristics of the small lower limit of the effective Separation size, short Separation time, large handling capacity, and low operation cost. It shows significant advantages in the oily wastewater treatment field, especially the polymer flooding oily wastewater treatment aspect. In this paper, the Cyclonic Separation function mechanism of the Cyclonic-static microbubble flotation column was studied, the impact of the parameters including the feeding rate, aeration rate, circulating pressure, and underflow split ratio on the Cyclonic Separation efficiency was investigated, and the Cyclonic Separation efficiency model was established as well. In addition, by applying the Doppler Laser Velocimeter (LDV) and Fluent simulation software, the test and simulation to the single-phase flow velocity field of the Cyclonic Separation section of the Cyclonic-static microbubble flotation column were carried out, and the velocity distribution rule of the Cyclonic Separation section was analyzed under the single-phase flow conditions.
Hongxiang Xu - One of the best experts on this subject based on the ideXlab platform.
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Research of novel process route and scale-up based on oil-water Separation flotation column
Journal of Water Reuse and Desalination, 2017Co-Authors: Huang, Hongxiang Xu, Lun Wu, Xiaobing Li, Yongtian WangAbstract:A novel process ‘coalescence-airflotation-carrier preferential adsorption’ utilising an oil-water Separation flotation column with a unique structure was used in the oil-water Separation field. The oil-water Separation flotation column contains the Cyclonic Separation and airflotation Separation which has advantages in oily sewage treatment, especially in polymer-flooding-drive oily sewage treatment. In this paper, different dimensions of flotation column with 1 m 3 d −1 , 30 m 3 d −1 and 2,000 m 3 d −1 oil-water Separation systems were investigated. In addition, several operating parameters which impact Separation, such as feeding speed, aeration rate, circulating pressure, adsorbents consumption and frother consumption were also investigated. The optimum operating parameters determined for 1 m 3 d −1 the oil-water Separation flotation column were a feeding speed of 0.042 m 3 h −1 , an aeration rate of 0.10 m 3 h −1 , a coal consumption of 4 (g coal)·(g oil) −1 , a frother consumption of 10 mg L −1 , and a circulating pressure of 0.12 MPa. The novel process cost reduced 55.8% than conventional two-stage air flotation process. In the 2,000 m 3 d −1 oil-water Separation experiment, the oil concentration and the oil removal efficiency of outlet are 23.39 mgL −1 , 97.70%, respectively. Sediment is not produced during the oily sewage treatment using the novel process and flotation column.
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Study of Oil Removal Kinetics using Cyclone-Static Microbubble Flotation Column
Separation Science and Technology, 2014Co-Authors: Hongxiang Xu, Yongtian Wang, Xiaowei Deng, Xiaobing LiAbstract:The Cyclonic-static microbubble flotation column (FCSMC) has dual effects including the Cyclonic Separation and airflotation Separation with advantages in the oily wastewater treatment field such as the small lower limit of the effective Separation size, short Separation time, large handling capacity, and low operating cost, especially the polymer-flooding oily wastewater treatment aspect. In this paper, the Cyclonic Separation function mechanism of the FCSMC was investigated. In addition, several operating parameters which impact oil removal efficiency and kinetics constants such as circulating pressure, the superficial gas velocity and the frother consumption were also investigated. The mathematical model relationship between the Separation kinetics constants and the factors including circulating pressure, gas superficial velocity, and the average bubble diameter was established. Based on the strength by steps, the physical Separation model of the Cyclonic-static microbubble was also established.
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Oil removing efficiency in oil–water Separation flotation column
Desalination and Water Treatment, 2014Co-Authors: Hongxiang Xu, Gan Cheng, Yongtian Wang, Xiaowei Deng, Xiaobing LiAbstract:AbstractAn oil–water Separation flotation column with a unique structure was used in oil–water Separation fields. The oil–water Separation flotation column contains the Cyclonic Separation and airflotation Separation with advantages in the oily sewage treatment field such as low effective Separation size, short Separation time, large handling capacity, and low operating cost, especially in polymer-flooding-drive oily sewage treatment aspect. In this paper, the oil removal efficiencies of the Cyclonic and airflotation sections of the oil–water Separation flotation column were investigated. In addition, several operating parameters which impact Separation such as feeding speed, aeration rate, circulating pressure, underflow split ratio, frother consumption were also investigated. The optimum operating parameters determined for the oil–water Separation flotation column were a feeding speed of 1.50 m3 h−1, an aeration rate of 2.50 m3 h−1, and a circulating pressure of 0.28 MPa. A bottom flow diversion ratio o...
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Cyclonic Separation process intensification oil removal based on microbubble flotation
International journal of mining science and technology, 2013Co-Authors: Hongxiang Xu, Xiaobing LiAbstract:Abstract The Cyclonic-static microbubble flotation column has dual effects including the Cyclonic Separation and floatation Separation with the characteristics of the small lower limit of the effective Separation size, short Separation time, large handling capacity, and low operation cost. It shows significant advantages in the oily wastewater treatment field, especially the polymer flooding oily wastewater treatment aspect. In this paper, the Cyclonic Separation function mechanism of the Cyclonic-static microbubble flotation column was studied, the impact of the parameters including the feeding rate, aeration rate, circulating pressure, and underflow split ratio on the Cyclonic Separation efficiency was investigated, and the Cyclonic Separation efficiency model was established as well. In addition, by applying the Doppler Laser Velocimeter (LDV) and Fluent simulation software, the test and simulation to the single-phase flow velocity field of the Cyclonic Separation section of the Cyclonic-static microbubble flotation column were carried out, and the velocity distribution rule of the Cyclonic Separation section was analyzed under the single-phase flow conditions.
Jiongtian Liu - One of the best experts on this subject based on the ideXlab platform.
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Effect of cone angles on single-phase flow of a laboratory Cyclonic-static micro-bubble flotation column: PIV measurement and CFD simulations
Separation and Purification Technology, 2015Co-Authors: Ai Wang, Xiaokang Yan, Lijun Wang, Yijun Cao, Jiongtian LiuAbstract:Abstract Combination of Cyclonic flotation and conventional column flotation is a novel column flotation technology. A Cyclonic-static micro bubble flotation column (FCSMC) using this technology significantly improves recovery rate during flotation. However, the mechanism of Cyclonic Separation still remains black box. This paper presents CFD simulations on single-phase to find how different the reversal cone, a key part in Cyclonic flotation unit in FCSMC, can affect the fluid flow, then corresponding mineral processing efficiency. PIV measurement is established for simulations validation. RSM-S turbulent model is used to obtain hydrodynamic characteristics in FCSMC. 38-, 48-, 58-, 68-degree cone angle cases are explored. Results show that three kinds of vortexes exist in a laboratory FCSMC: spiraling-up quasi-free vortex near wall, spiraling-up quasi-forced vortex near column axis and spiraling-down quasi-forced vortex between wall and axis of column. The vortexes are greatly affected by the angle of the reversal cone. In the column flotation unit, diameter and flux of quasi-forced vortex spiraling down increase while quasi-forced vortex spiraling up decreases with the angle increasing from 38° to 68°. Smaller angle generates larger overflow in Cyclonic flotation unit. Both tangential velocity and centrifugal intensity in Cyclonic flotation unit decrease. Disordered fluid flow in Cyclonic flotation unit is generated under too small cone angle, like 38°. Besides, under too large cone angle, like 68°, centrifugal intensity in column flotation unit increases and quasi-forced vortex spiraling up flux in Cyclonic flotation unit decreases or disappears. So the Separation environment is deteriorated. Among the four degrees, optimal fluid flow of the laboratory Cyclonic-static micro bubble flotation column can be maintained under an angle of 48°.
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Cyclonic Separation process intensification oil removal based on microbubble flotation
Elsevier, 2013Co-Authors: Jiongtian LiuAbstract:The Cyclonic-static microbubble flotation column has dual effects including the Cyclonic Separation and floatation Separation with the characteristics of the small lower limit of the effective Separation size, short Separation time, large handling capacity, and low operation cost. It shows significant advantages in the oily wastewater treatment field, especially the polymer flooding oily wastewater treatment aspect. In this paper, the Cyclonic Separation function mechanism of the Cyclonic-static microbubble flotation column was studied, the impact of the parameters including the feeding rate, aeration rate, circulating pressure, and underflow split ratio on the Cyclonic Separation efficiency was investigated, and the Cyclonic Separation efficiency model was established as well. In addition, by applying the Doppler Laser Velocimeter (LDV) and Fluent simulation software, the test and simulation to the single-phase flow velocity field of the Cyclonic Separation section of the Cyclonic-static microbubble flotation column were carried out, and the velocity distribution rule of the Cyclonic Separation section was analyzed under the single-phase flow conditions. Keywords: Cyclonic-static microbubble flotation column, Microbubble flotation, Cyclonic Separation, Oil–water separatio
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effect of a Cyclonic flotation column on the Separation of magnesium from phosphate ore
Mining Science and Technology (china), 2011Co-Authors: Jiongtian Liu, Yijun Cao, Dapeng WangAbstract:Abstract This study was performed to investigate the effects of the Cyclonic Separation mechanism on the removal of magnesium from phosphate ore. An analysis of the particle-bubble collision mechanism in a Cyclonic force field was used to design two different pulp circulation systems for a Cyclonic-static micro-bubble flotation column (FCSMC). Experiments comparing the two conditions were then conducted. Size analysis of the feed and separated products was conducted with a BXF cyclone size analyzer. The results show that about 34.60% of the total MgO content in the feed exists in the −10 μm fraction. This demonstrates that magnesium removal from phosphate ore has the characteristics of a micro-fine particle flotation problem. Under conditions of Cyclonic circulation the MgO level of the concentrate is 1.74%, which is lower than that obtained from the column operated in direct-flow circulation by 0.34%. These results indicate that the Cyclonic circulation mechanism of the FCSMC can promote removal of micro-fine particles containing magnesium. This is attributed to the function of surface flotation and to the reduction of the lower Separation limit under conditions of Cyclonic circulation.
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Particle Residence Time in Column Flotation Based on Cyclonic Separation
Journal of China University of Mining and Technology, 2007Co-Authors: Xiao-hua Zhou, Jiongtian LiuAbstract:Abstract The Cyclonic static micro-bubble column flotation (FCSMC) is an effective Separation device for fine particle treatment. The high mineralization rate and short flotation time of this equipment can be attributed to its unique Cyclonic force field. It also has been observed that the presence of a Cyclonic force field leads to a lower bottom Separation size limit and a reduction of unselective entrainment. The collection zone of the column is considered to consist of two parts, a column Separation zone and a Cyclonic zone. Total recovery of the collection zone was developed. For our study, we analyzed the particle movement in the Cyclonic zone. Particle residence time equations for the Cyclonic zone were derived by force analysis. Results obtained in this study provide a theoretical foundation for the design and scale-up of the FCSMC.
R H Wilson - One of the best experts on this subject based on the ideXlab platform.
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chemical engineering applications of electrical process tomography
Sensors and Actuators B-chemical, 2003Co-Authors: Henri S Tapp, A J Peyton, E K Kemsley, R H WilsonAbstract:Electrical tomographic imaging has been applied to a broad range of chemical engineering processes, including: bubble columns, fluidised beds, pneumatic transport, liquid mixing, Cyclonic Separation, pressure filtration, liquid pipe-flow, polymerisation, emergency depressurisation, and paste extrusion. Two imaging approaches are described, electrical capacitance tomography (ECT) and electrical impedance tomography (EIT). To date, these have primarily been used as low-cost research tools for studying process dynamics, although they potentially may also act as sensors permitting on-line monitoring and control. Various aspects of design, operation and data processing are described, along with a review of applications in the literature.
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Chemical engineering applications of electrical process tomography
Sensors and Actuators B-chemical, 2003Co-Authors: Henri S Tapp, A J Peyton, E K Kemsley, R H WilsonAbstract:Electrical tomographic imaging has been applied to a broad range of chemical engineering processes, including: bubble columns, fluidised beds, pneumatic transport, liquid mixing, Cyclonic Separation, pressure filtration, liquid pipe-flow, polymerisation, emergency depressurisation, and paste extrusion. Two imaging approaches are described, electrical capacitance tomography (ECT) and electrical impedance tomography (EIT). To date, these have primarily been used as low-cost research tools for studying process dynamics, although they potentially may also act as sensors permitting on-line monitoring and control. Various aspects of design, operation and data processing are described, along with a review of applications in the literature.
Hua-lin Wang - One of the best experts on this subject based on the ideXlab platform.
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Gas-Particle Cyclonic Separation Dynamics: Modeling and Characterization
Separation and Purification Reviews, 2018Co-Authors: Bingtao Zhao, Dongshen Wang, Yaxin Su, Hua-lin WangAbstract:As a stationary intensification processing technology, Cyclonic Separation has been widely used for multiphase gas-particle Separation in the fields of fluidized processing, energy utilization, mat...
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Cyclonic Separation Technology: Researches and Developments
Chinese Journal of Chemical Engineering, 2012Co-Authors: Hua-lin Wang, Yanhong Zhang, Jiangang Wang, Honglai LiuAbstract:Abstract Centered on the techniques and industrial applications of the reinforced Cyclonic Separation process, its principles and mechanism for Separation of ions, molecules and their aggregates using polydisperse droplets are discussed generally; the characteristics and influential factors of fish-hook phenomenon of the grade efficiency curve in Cyclonic Separation for both gas and liquid are analyzed; and the influence of shear force on particle behavior (or that of particle swarm) is also summarized. A novel idea for Cyclonic Separation is presented here: enhancing the Cyclonic Separation process of ions, molecules and their aggregates with monodisperse microspheres and their surface grafting, rearranging the distribution of particles by size using centrifugal field, reinforcing the Cyclonic Separation performance with orderly arranged particle swarm. Also the investigation of the shortcut flow, recirculation flow, the asymmetric structure and non-linear characteristics of the Cyclonic flow field with a combined method of Volumetric 3-component Velocimetry (V3V) and Phase-Doppler Particle Anemometer (PDPA) are elaborated. It is recommended to develop new systems for the Separation of heterogeneous phases with Cyclonic technology, in accordance with the capture and reuse of CO2, methanol to olefins (MTO) process, coal transfer, and the exploitation of oil shale.
