Fuel-based ethanol dehydration process directly extracted by gasoline additive

Li, Jun; You, Chenjia; Lyu, Zhaoxian; Zhang, Chi; Chen, Lifang; Qi, Zhiwen

doi:10.1016/j.seppur.2015.05.012

Cited by 10 publications

(5 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Li et al 49 investigated two fuel additive-based processes, that is, ADS with and without SRC. Among the various gasoline additives (methyl tert-butyl ether, MTBE, ethyl tert-butyl ether, diisopropyl ether, and tert-amyl methyl ether), MTBE is screened as a potential solvent by analyzing residue curve maps, both experimentally and through simulations in Aspen Plus.…”

Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 99%

Review of Technological Advances in Bioethanol Recovery and Dehydration

Singh

Rangaiah

2017

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Today, at the threshold of the 21st century, rising apprehensions about the instability of oil prices, energy security, and adverse effects of fossil fuels on the environment, have made it imperative to search for alternative energy resources that are clean and sustainable. Among various biofuels, bioethanol is very promising. Bioethanol obtained from the fermentation of biomass is dilute and needs to undergo recovery and dehydration before its use as a fuel. This separation step is one of the energy-intensive steps in bioethanol production, which continues to motivate continual advances in bioethanol separation design. Hence, this review paper focuses on the recent advancements in the development of bioethanol recovery and dehydration processes. It is organized in the form of an annotated bibliography, whereby 54 journal papers and book chapters from the year 2008 to 2016 are summarized based on a classification according to separation technology employed. In addition, quantitative performance indicators (namely, cost and energy required for separation) in the papers/book chapters reviewed are presented on a consistent basis (per unit of bioethanol produced). All these will be useful to researchers and practitioners for technology selection and/or further advances in bioethanol separation.

show abstract

Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 99%

Review of Technological Advances in Bioethanol Recovery and Dehydration

Singh

Rangaiah

2017

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…The largest amount of water from bioethanol is removed by distillation, but the purity of bioethanol is limited to 89.47 mole% ethanol because of the minimum azeotrope with the water. The industrial processes used at this moment for ethanol anhydrization are extractive distillation [4][5][6][7][8][9][10][11][12][13], azeotropic distillation [7,[14][15][16][17][18] adsorption [19][20][21][22], pervaporation [23,24] or pressure swing distillation [25,26]. Hybrid processes that combine membrane processes with distillation claim the smallest costs for the separation of bioethanol obtained from fermented broths.…”

Section: Introductionmentioning

confidence: 99%

“…Depending on the boiling temperature of the entrainer, the energy consumption varies. Different compounds were proposed as entrainers for azeotropic distillation: methyl tert-butyl ether (MTBE) [14,15], ethyl tert-butyl ether (ETBE), tert-amyl methyl ether (TAME), diisopropyl ether (DIPE) [14,16] isooctane [15,17], octane, [18], hexane, cyclohexane, gasoline [16], [17], pentane [7]. The SEC for these processes varies between 1.69 MJ/kg ethanol [17] and 8 MJ/kg ethanol [15], depending on the ethanol concentration in the feed.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Regression Vapor–liquid Equilibrium Data for Ethanol + Dipropylene Glycol Binary System

Nicolae,

Fendu

2024

Period. Polytech. Chem. Eng.

View full text Add to dashboard Cite

Ethanol is one of the most utilized additives in gasoline, and its obtaining and separation from regenerable resources is of great interest. Despite the enormous energy consumption, extractive and azeotropic distillation is still preferred for ethanol anhydrization. This work studies the utilization of dipropylene glycol (DPG) as an extractive agent. The vapor–liquid equilibrium (VLE) data for the ethanol + DPG binary system was experimentally determined and the VLE data obtained were regressed using Non-Random Two Liquid (NRTL) and Universal Quasi Chemical (UNIQUAC) thermodynamic models in PRO/II 2020 simulation software. The binary interaction parameters obtained from regression were used to simulate the water + ethanol separation by extractive distillation with DPG. There were realized a series of several simulations, using different solvent/feed ratios in the extractive distillation column, starting from two basic variants: variant A, where no heat recovery is considered, and variant B, where the heat of the hot streams in the process flow diagram (PFD) is recovered in three heat exchangers. The specific energy consumption (SEC) expressed as MJ/kg of anhydrous ethanol were calculated for each variant. It was found that the most economical is variant B which for the SEC is 7.53 MJ/kg of anhydrous ethanol. The SEC calculated for the best variant in this study is lower than the SEC calculated by other researchers for similar processes.

show abstract

“…What they all have in common is that a solvent must be used that must be regenerated, resulting in a high energy demand. If the biofuels are to be used in combination with hydrocarbon fuels, acting as a substitute of a certain percentage, as for instance outlined in the Renewable Energy Directive of the European Union, a promising process alternative is the extraction of the biofuel components directly into the hydrocarbon fuels (e.g., gasoline) , or blending stocks (e.g., catalytic reformate) . This omits the step of solvent recovery, and only relatively small amounts of water in the organic extract phase need to be removed in order to meet the final fuel specifications.…”

Section: Introductionmentioning

confidence: 99%

Surrogates for Liquid–Liquid Extraction

Neubauer,

Lenk,

Schubert

et al. 2023

ACS Omega

View full text Add to dashboard Cite

Fuel surrogates are mixtures that mimic the properties of real fuels with only a small number of components, simplifying the calculation and simulation of fuel-related processes. This work extends a previously published surrogate optimization algorithm toward the generation of fuel surrogates with a focus on liquid–liquid extraction characteristics. For this purpose, experimental liquid–liquid equilibrium data from batch extraction experiments are incorporated into the calculation procedure as an additional constraint. The use of the method is demonstrated by optimizing a surrogate for the catalytic reformate. Application of the surrogate to an extraction process and comparison with experimental data demonstrate that the resulting surrogate accurately depicts the properties of the real mixture with regard to liquid–liquid extraction performance. This demonstrates that the use of such surrogates is of particular interest for mixtures used as extracting agents for biofuels.

show abstract

Fuel-based ethanol dehydration process directly extracted by gasoline additive

Cited by 10 publications

References 30 publications

Review of Technological Advances in Bioethanol Recovery and Dehydration

Review of Technological Advances in Bioethanol Recovery and Dehydration

Experimental and Regression Vapor–liquid Equilibrium Data for Ethanol + Dipropylene Glycol Binary System

Surrogates for Liquid–Liquid Extraction

Contact Info

Product

Resources

About