Process synthesis of intensified extractive distillation for recycling organics material from wastewater

Xue, Jian; Li, Jinlong; Ye, Qing; Yan, Lingqiang; Li, Xinhao; Zhang, Jianyu

doi:10.1016/j.seppur.2022.122172

Cited by 19 publications

(1 citation statement)

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“…Then, using ethylene glycol as the solvent to separate acetonitrile and water as an example, the results displayed that the new scheme can reduce energy by 16.3% compared with the conventional scheme. Moreover, Jian et al 16 proposed an innovative ED process by integrating the preconcentration column and the extractant recovery column to separate the azeotrope of acetonitrile, 1,4-dioxane, and water. This reduces the cost of the process by 20.84% and saves energy by 24.22%, compared with the four-column ED process using a preconcentration column.…”

Section: Introductionmentioning

confidence: 99%

Economic and Environmental Assessment of a Novel Integrated Three-Column Extractive Distillation Process for Recycling Organics from Wastewater

Xue

et al. 2023

Ind. Eng. Chem. Res.

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For diluted wastewater with azeotropes discharged from chemical plants, it is important to design a sustainable extractive distillation process to achieve efficient separation. By separating the dilute wastewater containing isopropanol and acetonitrile, it is proved that the four-column extractive distillation processes with a preconcentration column and a novel threecolumn process containing an integrated column with preconcentration and solvent recovery function can achieve energy conservation and cost reduction. At the same time, heat integration and heat pump-assisted technologies were further used to intensify the proposed processes. The proposed processes are evaluated in terms of economy, energy consumption, and CO 2 emissions. The results display that the double heat pump-assisted extractive distillation process can obtain 75.10% energy saving and the heat integration of the extractive distillation process with a preheater can save 69.45% cost, compared with the conventional extractive distillation process.

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Section: Introductionmentioning

confidence: 99%