Optimal liquid fuel extractive desulfurization in micro and mini-channels

Experimental study and mass transfer modelling for extractive desulfurization of diesel with ionic liquid in microreactors

“…It was further found that decreasing the inner diameter of the microchannel from 1 mm to 0.75 mm improved the extraction efficiency by 10%, because the resulted decrease of slug size and increase of specific surface area improved the mass transfer. Recently, Al-Azzawi et al [28] compared the EDS performance of polyethylene glycol and a deep eutectic solvent in miniaturized borosilicate channels of different diameters, and further confirmed the presence of higher percentage of extraction when using a small diameter channel. It was also concluded that the time for reaching the equilibrium was reduced in microchannel devices by almost 99% of that in conventional batch processes.…”

“…deep eutectic solvents, polymers.) for extraction processes have proved the superiority of the segmented flow microreactor compared with the conventional extraction equipment [24][25][26][27][28]. Tsaoulidis et al [24] carried out the extraction of dioxouranium (VI) from nitric acid solutions by TBP/[Bmim][NTf 2 ] mixtures in a microchannel of 0.5 mm internal diameter.…”

Extractive Desulfurization in Microchannel Contactors Using Deep Eutectic Solvents: Optimization Using Central Composite Design (CCD) and Flow Pattern Mapping

“…The residence time is directly related to the microchannel length. Therefore, an increase in the microchannel length results in an increase in the residence time and a subsequent increase in sulfur removal. ,, As can be seen in Figure a, sulfur removal is more sensitive to the variation in the microchannel length at an RF/D of 1 compared to an RF/D of 5.…”

“…Al-azzawi et al 40 also employed the RSM based on central composite design (CCD) to relate sulfur removal to different influential parameters, including the mixture velocity, the volume fraction, the channel diameter, and length. Their findings demonstrated that a quadratic model can fit the experimental data reasonably.…”

“…Moreover, as reported in Table , there is a lack of information on the flow pattern of the EDS process in the microchannels. ,− It should be noted that the previous articles did not provide a sufficient illustration of the various flow regime types. Additionally, the application of RSM for the optimization of the EDS in microchannels is limited to the study of Al-Azzawi et al To fill this research gap, the main focus of the present study is to employ the RSM for the optimization of EDS in the microchannels, considering the sulfur removal and appropriate flow pattern. It should be noted that the solvent screening was investigated in our previous study in detail .…”