![]() ![]() Results show that co-current flow mode performs better than counter-current flow mode and an aldehyde to DIOL feed-in mole ratio of 1.35 to 1 is sufficient. The reactive extraction model was established on Aspen Plus v11, and the effects of flow mode (co-current and counter-current), number of stages, the feed-in mole ratio of aldehyde to DIOL on the conversions of EG and 1,2-BDO, the recovery of 2-ethyl-1,3-dioxolane (2ED), and the purity of acetals were investigated. Based on the results of the thermodynamic analysis, a reactive extraction process was proposed to intensify the acetalization of EG and 1,2-BDO mixture with propyl aldehyde. ![]() Propyl aldehyde, apart from as the reactant, also shows excellent performance in water removal and acetals extraction. Thermodynamic experiments were carried out and employed to analyze the vapor–liquid and liquid–liquid behaviors of the system. Ethylene glycol (EG) is a widely used industrial chemical material, and integrated chemical-looping separation technology (CLS) was verified effective to remove 1,2-butanediol (1,2-BDO) and recover EG produced via the syngas to EG route. ![]()
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February 2023
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