Article
Chemistry, Multidisciplinary
Deqi Wang, Haikang Huang, Yongli Lv, Kai Chen, Yanlei Zhong, Peisheng Chen, Fan Min, Ganhua Xie, Zhichao Dong, Zonglin Chu
Summary: This study introduces a Gemini-type separator that utilizes the cooperation of two types of superwettable sand particles with opposite wettability to achieve efficient and continuous separation and purification of water and oil phases in complex oil-water systems.
Article
Engineering, Chemical
Fei Dong, Jingpeng Zhou, Sheng Xu, Jie Ni
Summary: This study investigates the effects of vane channel parameters on the flow field and performance of a vane type gas-water separator for a proton exchange membrane fuel cell (PEMFC) system. The results show that the pressure drop of the separator gradually increases with the increase of the vane contraction ratio, while the separation efficiency has a tendency to increase and then decrease with the increase of the vane incidence angle.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Engineering, Chemical
Chuanjun Han, Yang Hu, Wenying Li, Qin Bie
Summary: In this study, a 3D printed guide vane cyclone separator was designed to investigate the separation efficiency, turbulent kinetic energy, and particle movement. The results revealed that the tangential velocity played a major role in the separation process, and the bottom of the exhaust pipe was the main region for gas-solid separation and pressure drop. The separation efficiency and pressure drop were positively correlated with the inlet velocity and the particle radius of the fluid.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Nuclear Science & Technology
Ke Wang, Li Liu, Dehui Xu, Hanyang Gu
Summary: This study conducted a three-dimensional simulation and optimization of a conical swirl-vane separator to investigate its flow field and separation performance. The results showed that the conical barrel reduced the flow channel, resulting in a low-pressure and low-velocity wake region. The structure of the conical barrel and drain holes were found to be crucial for liquid separation.
NUCLEAR ENGINEERING AND DESIGN
(2023)
Article
Energy & Fuels
Hamidreza Asaadian, Milan Stanko
Summary: Subsea water separation using pipe separators is crucial for efficient and environmentally responsible extraction of oil and gas from the seabed. This study evaluated the performance of a multi-parallel pipe separator for water-oil bulk separation, comparing spiked and unspiked oil mixtures. Crude oil spiking significantly reduced the efficiency of the pipe separator and affected the water cut ratio and flow pattern.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Rongcheng Mao, Yudong Li, Yiqian Liu, Huatong Zhu, Ning Wang, Qiang Yang, Hao Lu
Summary: Based on experiment and numerical simulation, a new type of efficient oil-water separator with high separation accuracy was constructed in this study by adding oil collecting pipe. Experimental results showed that, in the treatment of 10% oil mixture, when the inlet flow rate was 0.5 m/s, the volume fraction of oil at the oil outlet could reach 45%, and the volume fraction of oil at the water outlet could be reduced to 0.0724%. The novel separator exhibits great potential in oil fields with high water content or offshore platforms according to the laboratory-scale tests.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Jiarong Wang, Zhongli Ji, Zhen Liu
Summary: A novel vane separator with grooves was proposed to improve the removal efficiency of fine droplets in natural gas purification processes. The combination of experimental and numerical methods revealed that the groove configurations significantly influenced the airflow velocity distribution and droplet trajectories, thereby affecting the separation efficiency and pressure drop.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Nuclear Science & Technology
Danjie Mai, Fulong Zhao, Yuan Zhao, Ruifeng Tian, Sichao Tan
Summary: This study investigates the influence of structural parameters on the characteristics of the wave type separator and proposes three optimal schemes based on numerical calculation and analysis. The results show that in hot conditions, the pressure drop calculated in the 2D model is higher compared to the 3D model and the calculation accuracy of velocity is slightly poorer. Increasing the plate spacing generally decreases the pressure drop and separation efficiency, with a local minimum pressure drop occurring in a certain range. The pressure drop and separation efficiency increase with the increase of plate-hook distance or overall hook length. Plate IV-Y is identified as the best all-around performer among the seven schemes, improving efficiency and reducing pressure loss simultaneously, while plate V-P shows the best optimization performance on separation efficiency when not considering the pressure loss.
PROGRESS IN NUCLEAR ENERGY
(2023)
Article
Nuclear Science & Technology
Ruiqi Kang, Zhenqin Xiong, Shuo Ouyang, Shengjie Gong
Summary: This study investigates the effect of drainage channels on the separation efficiency of swirl-vane separators in nuclear reactors. It is found that using drainage channels can improve separation efficiency at low gas velocities, but reverse gas flow from down-comer to riser through these channels can deteriorate separation at high gas velocities. The arrangement of drainage channels has the greatest impact on separation performance compared to their size and shape.
ANNALS OF NUCLEAR ENERGY
(2023)
Article
Biochemistry & Molecular Biology
Tao Zhang, Chenguang Li, Shuyu Sun
Summary: The effect of temperature on the penetration velocities of water droplets in oil-water separations using a separation membrane is studied. A numerical scheme based on the phase-field model is developed to simulate the motion of droplets under different temperatures. It is found that higher temperature leads to faster droplet penetration, and a larger density difference in the oil-water system aids in the separation process.
Article
Energy & Fuels
Min Zhan, Wanyou Yang, Fenghui Zhang, Changhua Luo, Huaxiao Wu, Peiwen Guo, Qiong Shen, Xiaobo Zeng, Changqi Yan
Summary: This paper introduces a new type of separator and an experimental system to investigate its separation performance. The experimental results show that higher water flow rate and oil fraction lead to lower separation efficiency.
FRONTIERS IN ENERGY RESEARCH
(2021)
Article
Engineering, Marine
Songtao Huang, Xue He, Jiaqing Chen, Xiujun Wang, Jian Zhang, Jianyu Dong, Baosheng Zhang
Summary: As offshore oilfields enter the middle- and late-exploitation period and tertiary enhanced oil recovery (EOR) technology becomes more popular, traditional methods of oil-water separation face new challenges. To address this issue, electric-field-enhanced oil-water separation equipment was developed and tested in a mine field. The experimental results showed that the equipment had more significant advantages compared to traditional equipment, especially in large flow conditions.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Chemical
Xiaobo Zeng, Le Zhao, Guangming Fan, Changqi Yan
Summary: Centrifugal separation is a feasible method for oil-water separation, and the optimization of axial separators can improve separation performance, while multiple stage separators have high separation performance and low split ratio.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2021)
Article
Energy & Fuels
Xiaobo Zeng, Meng Wang, Guangming Fan, Jie Cheng, Changqi Yan
Summary: This paper investigates the flow behaviors inside the separator at different inlet flow patterns using a vane-type separator and provides guidance for practical application. Different flow forms such as swirling chain flow, swirling intermittent flow, and swirling annular flow are observed. The accumulation of bubbles can be eliminated by opening the first light phase outlet. Experimental results suggest that vane-type separator is suitable for applications with high liquid velocity and low gas void fraction.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Article
Engineering, Chemical
Lingzi Wang, Biyuan Liu, Jianmei Feng, Xueyuan Peng
Summary: A new structural scheme using a multi-layer central channel is proposed to improve cyclone separator performance. Experimental results showed that the cyclone separator with three layers (SEP-3) had the highest separation efficiency, while the one with two layers (SEP-2) had the lowest pressure drop. SEP-3 maintained high performance at low inlet velocities, unlike the other two structures. It also performed the best in separating small oil droplets.
Article
Engineering, Chemical
Lele Yang, Jan Zhang, Yong Ma, Jingyu Xu, Jing Wang
CHEMICAL ENGINEERING SCIENCE
(2020)
Article
Engineering, Chemical
Lele Yang, Li Zou, Yong Ma, Jing Wang, Jingyu Xu
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Energy & Fuels
Jun Niu, Shuo Liu, Jing-yu Xu
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2020)
Article
Engineering, Chemical
Shuo Liu, Jian Zhang, Lin-tong Hou, Jing -yu Xu
Summary: The study investigated the variation regularity of characteristic droplet diameters in swirling flow field through experimental research and numerical simulations. The results revealed a bilinear relationship between the section average d(32) and the turbulent energy dissipation rate, a quadratic relationship between the section average d(90) and the swirling number, and a linear relationship between the d(5) and the swirling number. These characteristic droplet diameters were found to be sensitive to various operating parameters and oil properties.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Dong Zhang, Shuo Liu, Jian Zhang, Lin-tong Hou, Jing-yu Xu
Article
Chemistry, Multidisciplinary
Meng Yang, Shuo Liu, Wan-hai Xu, Jing-yu Xu
Article
Engineering, Chemical
Wenqi Ke, Lintong Hou, Lisong Wang, Jun Niu, Jingyu Xu
Summary: This study established a new model of liquid-film reversal in gas wells, considering the influences of pipe angle and friction coefficient of the gas-liquid interface. Experimental results showed that the interfacial shear force increases with the liquid superficial velocity, affecting the critical liquid-carrying gas velocity and production rate.
Article
Chemistry, Multidisciplinary
Wei An, Qingfan Zhang, Jianping Zhao, Liang Qu, Shuo Liu, Meng Yang, Jingyu Xu
Summary: The novel skimmer is able to effectively recover spilled oil on the sea surface and speed up the recovery process. The experimental results show a linear relationship between recovery efficiency and split ratio, and the oil content at the overflow port is influenced by spilled oil amount and split ratio.
Article
Mechanics
Li-song Wang, Shuo Liu, Lin-tong Hou, Meng Yang, Jian Zhang, Jing-yu Xu
Summary: This study introduces a simplified model and a unified model for predicting the critical gas velocities of film reversal. The simplified model offers a balance between simplicity and high accuracy, while the unified model considers more details and is more rigorous, aiding in understanding the mechanism of film reversal.
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
(2022)
Article
Engineering, Chemical
Nian-Hui Wan, Li-Song Wang, Lin-Tong Hou, Qi-Lin Wu, Jing-Yu Xu
Summary: A transient model using the finite difference method to simulate temperature and pressure in CO2 injection wells is proposed. The maximum error between simulated and measured results is 5.04%. The phase state is primarily controlled by the wellbore temperature, and increasing injection temperature or decreasing injection rate can help achieve the supercritical state.
Article
Engineering, Chemical
Lintong Hou, Dong Zhang, Meng Yang, Shuo Liu, Jingyu Xu
Summary: The flow characteristics and wall slip phenomenon of gas-liquid-solid mixtures in horizontal pipes were investigated. The critical liquid velocity for flow structure transformation was found to be between 0.75 and 1 m/s. The injection of gas reduced drag to a certain extent. However, the relative slip contribution increased and then decreased with an increase in the superficial gas velocity. The pressure gradient and wall slip velocity were sensitive to gas and liquid phase velocities, phase volume fraction, and pipe conditions.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Mechanics
Jian Zhang, Yun-teng He, Shuo Liu, Jing-yu Xu
Summary: Cylindrical cyclones with a vortex finder are commonly used in the petroleum industry for oil-water separation. This study utilized dimensional analysis and multiphase flow numerical simulation to analyze the separation process in such cyclones. The results showed that the diameter of the overflow pipe, inlet velocity, and flow split ratio significantly influenced the structure of the vortex core. Increasing the diameter of the oil droplet improved the separation efficiency, while increasing the overflow split ratio decreased the oil volume fractions in the outlets.
Article
Energy & Fuels
Lele Yang, Lian Luo, Jing Wang, Jingyu Xu, Zhenfeng Zhai
Summary: This paper introduces a pressure control scheme for GLCC to achieve fast and stable gas-liquid separation. Experimental results show that increasing liquid superficial velocity only increases the distribution of small droplets, and the droplet size distribution at high dimensionless pressure is larger compared to that at low dimensionless pressure.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Applied
Jun Niu, Shuo Liu, Jing-Yu Xu
CHEMICAL INDUSTRY & CHEMICAL ENGINEERING QUARTERLY
(2020)
Article
Engineering, Chemical
Shuo Liu, Jian Zhang, Li-Song Wang, Jing-Yu Xu
SEPARATION AND PURIFICATION TECHNOLOGY
(2020)
Article
Engineering, Chemical
Andrea Coletto, Pietro Poesio
Summary: Experiments and simulations were conducted to study the air volume fraction and hold-up in a bubble channel reactor. A new signal processing method was proposed to avoid the loss of bubble residence time. The results were in agreement with previous studies and a bubble-scale model was developed to explain the relationship between hold-up and air superficial velocity.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2024)
