Microwave‐induced polar/nonpolar mixture separation performance in a film evaporation process

Li, Hong; Liu, Jiahui; Li, Xingang; Gao, Xin

doi:10.1002/aic.16436

Cited by 26 publications

(5 citation statements)

References 17 publications

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“…There is an emerging interest in deploying microwave technology (MWT) for energy efficient, rapid, volumetric, and selective heating. − The potential of using renewable solar and wind energy to power microwave (MW) devices makes the technology even more appealing. MW heating is primarily driven by dipole polarization and ionic conduction inside the heated materials and directly deposits energy volumetrically, instead of relying on conventional conduction and convection.…”

Section: Introductionmentioning

confidence: 99%

Operation and Optimization of Microwave-Heated Continuous-Flow Microfluidics

Chen

Baker-Fales

Vlachos

2020

Ind. Eng. Chem. Res.

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Microwave (MW) technology can be powerful for electrification and process intensification but limited fundamental understanding of scalability and design principles hinders its effective use. In this work, we build a continuous-flow microreactor inside a commercial single-mode MW applicator and the corresponding computational fluid dynamics model to simulate the temperature profile. The model is in good agreement with experiments for various microreactor dimensions and operating conditions. The model indicates that MW heating is greatly influenced by reactor geometry as well as the operating parameters. We observe a strong correlation between parameters and develop a gradient boost regression tree model to predict the outlet temperature accurately. This model is then applied to optimize the dimensions and operating conditions to maximize the outlet temperature and energy efficiency, resulting in a Pareto optimal. We demonstrate computationally and experimentally that it is possible to surpass the Pareto optimal and achieve an energy efficiency of ∼90% or greater at temperatures relevant for liquid-phase chemistry via salting of the solvent. The present methodology can be applied to other complex MW reactors. The combined numerical and experimental approach provides insights into and a framework for scale-up and optimization.

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Section: Introductionmentioning

confidence: 99%

Operation and Optimization of Microwave-Heated Continuous-Flow Microfluidics

Chen

Baker-Fales

Vlachos

2020

Ind. Eng. Chem. Res.

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“…Li et al 47 designed a microwave‐induced film evaporator for the separation of polar/non‐polar azeotropic mixture, and studied the influence mechanism of microwave on the separation of polar/non‐polar system. It is found that microwave irradiation can increase the vaporization of polar substances, and appropriate increase of microwave power can improve the separation effect.…”

Section: Experimental Study and Mechanism Analysis Of Microwave‐assis...mentioning

confidence: 99%

Research progress on the formation mechanism of azeotrope and its separation process in microwave field

Zeng

Jia

et al. 2021

J of Chemical Tech & Biotech

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In the process of petrochemical, coal chemical, and pharmaceutical industries, a large amount of azeotrope is usually produced. The traditional method of separating azeotrope consumes a lot of energy. Therefore, it is of great significance to develop a low energy consumption and high efficiency method of separating azeotrope to achieve economic benefits and reduce energy consumption. The use of microwave fields for enhanced distillation processes to separate azeotrope is currently of great interest. In this paper, the mechanism of azeotropic formation is reviewed from three aspects: experimental studies, quantum chemical calculations and molecular simulations, and the influence of cluster structure on azeotropic formation is analyzed. Then the paper discusses the experimental study of microwave‐enhanced distillation process to separate azeotrope and the molecular simulation process, and the mechanism of microwave‐assisted azeotropic separation and the feasibility of industrialization are analyzed. © 2021 Society of Chemical Industry (SCI).

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“…Water treatment and water reuse techniques, including water softening, brackish water purification, , and wastewater treatment, , are important to relieve water resource crisis. Various methods have been applied in water treatment, such as evaporation, distillation, and adsorption . Membrane-based separation process is one of the most crucial technologies for water treatment because of the high efficiency, easy operation, and relatively low energy consumption .…”

Section: Introductionmentioning

confidence: 99%

High Permeance Polyamide Nanofiltration Membranes Based on Poly(l-lactic acid) Electrospun Nanofibrous Membranes with Controlled Hydrophilicity

Yu,

Li,

Lin

et al. 2024

ACS Appl. Nano Mater.

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Nanofiltration (NF) membranes have aroused great attention in recent years. The most commonly used NF membranes are polyamide (PA) thin-film composite (TFC) membranes based on ultrafiltration membranes. Owing to the high porosity and interconnected pores, electrospun nanofibrous membranes are promising substrates for the fabrication of high-flux nanofiltration membranes, i.e., thin-film nanofibrous composite (TFNC) nanofiltration membranes. In this work, poly(l-lactic acid) (PLLA) nanofibrous membranes with adjustable hydrophilicity were successfully fabricated, and then, a PA layer was synthesized on the surface via the interfacial polymerization between piperazine (PIP) and trimesoyl chloride (TMC). The hydrophilicity of PLLA nanofibrous membranes influences the distribution and adsorption weight of PIP, which further affects the formation and morphology of the PA layer. Results indicate that, as the hydrophilicity of PLLA nanofibrous membranes increases, the adsorption amount of PIP increases, the thickness of the PA layer decreases, and the cross-linking degree increases, which ensures both high permeance and high rejection to Na2SO4. The TFNC membranes exhibit a water permeance of 17.0 L·m–2·h–1·bar–1 and a Na2SO4 rejection of 98.0%. This work achieves the control of substrate hydrophilicity by introducing hydrophilic additives and provides new insights for the fabrication of high-performance nanofiltration membranes.

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Microwave‐induced polar/nonpolar mixture separation performance in a film evaporation process

Cited by 26 publications

References 17 publications

Operation and Optimization of Microwave-Heated Continuous-Flow Microfluidics

Operation and Optimization of Microwave-Heated Continuous-Flow Microfluidics

Research progress on the formation mechanism of azeotrope and its separation process in microwave field

High Permeance Polyamide Nanofiltration Membranes Based on Poly(l-lactic acid) Electrospun Nanofibrous Membranes with Controlled Hydrophilicity

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