Chemical Engineering Research & Design最新文献_第2页

Transient behavior of the DYNASWIRL® phase separator during cryogenics tank-to-tank transfer operations DYNASWIRL® 相分离器在低温储罐到储罐传输操作过程中的瞬态行为

IF 3.7 3区工程技术

Chemical Engineering Research & Design Pub Date : 2024-10-05 DOI: 10.1016/j.cherd.2024.10.003

{"title":"Transient behavior of the DYNASWIRL® phase separator during cryogenics tank-to-tank transfer operations","authors":"","doi":"10.1016/j.cherd.2024.10.003","DOIUrl":"10.1016/j.cherd.2024.10.003","url":null,"abstract":"<div><div>In order to separate gas and liquid from a two-phase mixture in space or earth applications, one can generate a strong artificial acceleration field instead of relying on gravity. This can be achieved by generating a swirl flow in a separator. The DYNASWIRL® phase separator is such a passive device, which had been demonstrated in air/water mixtures in the laboratory and on five reduced gravity NASA parabolic flights. In this work, extensive laboratory testing and numerical simulations are conducted to demonstrate the validity of the DYNASWIRL for phase separation with cryogenics. Liquid nitrogen (LN<sub>2</sub>) is used for extensive testing involving unsteady tank-to-tank transfer with quenching of separator and piping, liquid boil-off and vaporization, phase separation and recovery. This paper describes the separator and testing setups used. It examines the effects of the liquid (water and LN<sub>2</sub>), geometric parameters, and their effects on the separation and on the pressure loss across the separator, and analyzes the flow dynamics of the gas removal process. Validated numerical simulations support the experimental results and help explain the effects of the design parameters on the results.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Experimental and ANN modeling of kerosene fuel desulfurization using a manganese oxide-tin oxide catalyst 使用氧化锰-氧化锡催化剂进行煤油燃料脱硫的实验和 ANN 模拟

IF 3.7 3区工程技术

Chemical Engineering Research & Design Pub Date : 2024-10-05 DOI: 10.1016/j.cherd.2024.10.001

{"title":"Experimental and ANN modeling of kerosene fuel desulfurization using a manganese oxide-tin oxide catalyst","authors":"","doi":"10.1016/j.cherd.2024.10.001","DOIUrl":"10.1016/j.cherd.2024.10.001","url":null,"abstract":"<div><div>This research pioneered the use of a nanocatalyst composed of manganese oxide (MnO<sub>2</sub>) and stannic oxide (SnO<sub>2</sub>) to effectively remove dibenzothiophene (DBT) from kerosene fuel through the catalytic oxidative desulfurization (ODS) process, using hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) as the oxidant. Impregnating SnO<sub>2</sub> with varying amounts of MnO<sub>2</sub> was used to manufacture the catalyst. The oxidation experiment ran in a batch reactor with varying reaction times and temperatures to determine optimal conditions. High MnO<sub>2</sub> dispersion over SnO<sub>2</sub> was shown by catalyst characterization data. Under optimal operating parameters (catalyst type: 5 % MnO<sub>2</sub>/SnO<sub>2</sub>, reaction temperature: 75 °C, and reaction duration: 100 min), the results demonstrated a maximum DBT removal efficiency of 82.84 % from kerosene fuel. This research also provides the construction of Artificial Neural Network (ANN) model to simulate the upgrading of kerosene fuel via desulfurization process. There has been a growing trend toward the diversified use of ANN to represent steady state systems in chemical engineering. MATLAB's code was employed for matching the experimental data to the artificial neural network (ANN) model. The resulted data showed significant agreement between the experimental and predicted outcomes, with regression coefficients (R<sup>2</sup>) of 0.99902, 0.99986, and 0.99961 and mean square errors (MSE) of 0.266, 0.272, and 0.104 for 0 % MnO<sub>2</sub>/SnO<sub>2</sub>, 1 % MnO<sub>2</sub>/SnO<sub>2</sub>, and 5 % MnO<sub>2</sub>/SnO<sub>2</sub> respectively. This interactive model provided a solid foundation for understanding the novel behavior of the oxidation process.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Influence of computational parcel resolution on hydrodynamics and performance of reacting fluidized bed reactors 计算包裹分辨率对流化床反应器流体力学和性能的影响

IF 3.7 3区工程技术

Chemical Engineering Research & Design Pub Date : 2024-10-04 DOI: 10.1016/j.cherd.2024.09.033

{"title":"Influence of computational parcel resolution on hydrodynamics and performance of reacting fluidized bed reactors","authors":"","doi":"10.1016/j.cherd.2024.09.033","DOIUrl":"10.1016/j.cherd.2024.09.033","url":null,"abstract":"<div><div>The Eulerian-Lagrangian computational models are critical for understanding gas-phase processes and addressing engineering challenges, yet their numerical accuracy in reactive gas-solid fluidized beds remains a concern. This work utilizes the multiphase particle-in-cell (MP-PIC) scheme to assess the impact of parcel number on the hydrodynamics and reaction predictions in the fluid catalytic cracking (FCC) catalyst regeneration process. By employing the energy-minimization multi-scale model for bubbling and turbulent flow regimes, the MP-PIC simulations closely match experimental solids concentration profiles. We developed and analyzed different parcel resolutions: 9.5×10³, 2.0×10⁴, 1.0×10⁵, 2.2×10⁵, 1.1×10⁶ in bubbling fluidized beds (BFB), and 6.5×10³, 1.3×10⁴, 7.1×10⁴, 1.4×10⁵, 6.8×10⁵ in turbulent fluidized beds (TFB). The findings reveal a significant sensitivity of coke combustion efficiency, flue gas evolution, and temperature to parcel resolution in BFB, attributable to mesoscale activities, with less impact observed in TFB. The study highlights the essential balance between the accuracy of Lagrangian particle configuration and computational costs.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142442673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Innovative fluidized bed flotation column for fine particle separation 用于细颗粒分离的创新型流化床浮选柱

IF 3.7 3区工程技术

Chemical Engineering Research & Design Pub Date : 2024-10-02 DOI: 10.1016/j.cherd.2024.10.002

{"title":"Innovative fluidized bed flotation column for fine particle separation","authors":"","doi":"10.1016/j.cherd.2024.10.002","DOIUrl":"10.1016/j.cherd.2024.10.002","url":null,"abstract":"<div><div>Flotation columns are extensively utilized to separate fine mineral particles. In highly turbulent environments, the increased collision efficiency between bubbles and particles can lead to improved flotation efficiency of fine particles. The fluidized bed flotation column (FBFC), a new type of flotation equipment, improves the separation efficiency of fine particles by creating a highly turbulent environment in the fluidized zone through the addition of solid particles. This paper investigated the fluidization characteristics, bubble, and gas hold up of the FBFC, along with the flotation efficiency of fine quartz particles. Experimental results showed that introducing gas enhanced the fluidization process in the fluidized bed. The fluidized zone facilitated the fragmentation of bubbles into smaller ones. With increasing liquid velocity, the bubble diameter decreases before subsequently increasing, while the gas holdup initially rises and then declines. The flotation efficiency of fine quartz particles is superior in FBFC with added particles compared to those without added particles. The flotation efficiency of fine particles increases with the rise in both liquid velocity and gas velocity.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research progress in synthesis and application of polyionic-liquid heteropolyacid materials 聚阴离子液体杂多酸材料的合成与应用研究进展

IF 3.7 3区工程技术

Chemical Engineering Research & Design Pub Date : 2024-10-01 DOI: 10.1016/j.cherd.2024.09.032

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Experimental and theoretical modeling of droplet break-up of W/O emulsion flow in ESPs 静电除尘器中油包水乳化液流动液滴破裂的实验和理论建模

IF 3.7 3区工程技术

Chemical Engineering Research & Design Pub Date : 2024-10-01 DOI: 10.1016/j.cherd.2024.09.025

{"title":"Experimental and theoretical modeling of droplet break-up of W/O emulsion flow in ESPs","authors":"","doi":"10.1016/j.cherd.2024.09.025","DOIUrl":"10.1016/j.cherd.2024.09.025","url":null,"abstract":"<div><div>The behavior of water-in-oil emulsions flow within Electrical Submersible Pumps (ESPs) is of significant interest in the oil and gas industry due to its complex rheological characteristics, which are influenced by operational parameters and the chemical properties of both phases. Operational parameters such as dispersed phase fraction, temperature, flow rate, and pump design were investigated experimentally in this work. Improved semi-empirical models for mean and maximum droplet diameter estimation were also proposed. Through extensive experimentation and statistical analysis, this study reveals that smaller droplets form with increasing dispersed phase fraction and the flow geometry significantly affects droplet breakage intensity. The proposed models integrate the dispersed phase fraction, dimensionless flow rate, specific speed, and energy dissipation rate, exhibiting commendable alignment with experimental findings. This not only helps predict effective viscosity but offers valuable insights for further analyses, particularly regarding catastrophic phase inversion (CPI) prediction. These aspects have significant importance in the oil and gas industry and can enable the optimization of production systems and processing facilities.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142356976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrigendum to “Implications for control systems in highly volatile energy markets: Using a high purity distillation electrification case study” [Chem. Eng. Res. Des. 203 (2024) 431–440] 能源市场剧烈波动对控制系统的影响：使用高纯度蒸馏电气化案例研究" [Chem. Eng. Res. Des. 203 (2024) 431-440] 的更正

IF 3.7 3区工程技术

Chemical Engineering Research & Design Pub Date : 2024-10-01 DOI: 10.1016/j.cherd.2024.08.016

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Influence of ultrasound treatment over CuZnAlCr mixed oxide catalysts in high-temperature water gas shift reaction 超声处理对高温水煤气变换反应中铜锌铝铬混合氧化物催化剂的影响

IF 3.7 3区工程技术

Chemical Engineering Research & Design Pub Date : 2024-10-01 DOI: 10.1016/j.cherd.2024.09.043

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CFD simulation of liquid-liquid extraction mechanism and enhancement schemes in microchannels based on three mass transfer models 基于三种传质模型的微通道液-液萃取机理及强化方案的 CFD 仿真

IF 3.7 3区工程技术

Chemical Engineering Research & Design Pub Date : 2024-10-01 DOI: 10.1016/j.cherd.2024.09.042

{"title":"CFD simulation of liquid-liquid extraction mechanism and enhancement schemes in microchannels based on three mass transfer models","authors":"","doi":"10.1016/j.cherd.2024.09.042","DOIUrl":"10.1016/j.cherd.2024.09.042","url":null,"abstract":"<div><div>Microreactors are highly efficient devices with a large specific surface area to improve the mass transfer efficiency. In this paper, a comprehensive three-dimensional CFD model was constructed based on three mass transfer theories to simulate the liquid-liquid two-phase flow and mass transfer process in a microchannel reactor, and two enhancement schemes were proposed. The multiphase flow and mass transfer characteristics were investigated by visualization and extraction experiments. The results indicated that the extraction efficiencies (<em>E</em>) and overall mass transfer coefficients (<span><math><mrow><msub><mrow><mi>K</mi></mrow><mrow><mi>L</mi></mrow></msub><mi>a</mi></mrow></math></span>) calculated by the penetration model and surface renewal model were within <span><math><mo>±</mo></math></span>15 % errors compared to the experimental values. Moreover, <em>E</em> primarily increases with the increase of fluid residence time, while <span><math><mrow><msub><mrow><mi>K</mi></mrow><mrow><mi>L</mi></mrow></msub><mi>a</mi></mrow></math></span> increases with increasing flow rate. As the flow rate increases from 0.3 ml/min to 1.5 ml/min, <em>E</em> decreases by 15 %, and <span><math><mrow><msub><mrow><mi>K</mi></mrow><mrow><mi>L</mi></mrow></msub><mi>a</mi></mrow></math></span> rises from 0.78 s⁻¹ to 2.65 s⁻¹. Whereas the channel width decreases from 0.8 mm to 0.3 mm, <em>E</em> decreases by 3 %, and <span><math><mrow><msub><mrow><mi>K</mi></mrow><mrow><mi>L</mi></mrow></msub><mi>a</mi></mrow></math></span> rises from 0.44 s⁻¹ to 2.77 s⁻¹. Finally, microchannel with necked structure and baffles in mixing zone both improve the mass transfer efficient to some extent.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142442666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Assessing the engineering aspects of azo dye decolorization in aerobic granular reactors 评估好氧颗粒反应器中偶氮染料脱色的工程问题

IF 3.7 3区工程技术

Chemical Engineering Research & Design Pub Date : 2024-09-30 DOI: 10.1016/j.cherd.2024.09.040

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