Computer-aided process design and optimization with novel separation units

Jaksland, Cecilia; Hytoft, Glen; Gani, Rafiqul

doi:10.1016/s1359-4311(96)00093-2

Cited by 6 publications

(2 citation statements)

References 5 publications

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“…HMD systems have not been industrially applied because of the lack of detailed process know‐how and membrane replacement cost (13, 14). Similar cost reduction as compared to extractive distillation has been reported for PSD and hybrid separation systems (15−17). Jaksland et al (15) reported 30% reduction in the operating cost of PSD as compared to ED for ethanol separation without heat integration between the high‐ and low‐pressure columns.…”

Section: Introductionsupporting

confidence: 72%

“…Similar cost reduction as compared to extractive distillation has been reported for PSD and hybrid separation systems (15−17). Jaksland et al (15) reported 30% reduction in the operating cost of PSD as compared to ED for ethanol separation without heat integration between the high‐ and low‐pressure columns. In this study, PSD including a heat integration scheme has been used to evaluate potential reduction in processing cost.…”

Section: Introductionsupporting

confidence: 72%

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Process Design and Optimization of Novel Wheat‐Based Continuous Bioethanol Production System

Arifeen

Wang

Kookos

et al. 2007

Biotechnology Progress

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A novel design of a wheat-based biorefinery for bioethanol production, including wheat milling, gluten extraction as byproduct, fungal submerged fermentation for enzyme production, starch hydrolysis, fungal biomass autolysis for nutrient regeneration, yeast fermentation with recycling integrated with a pervaporation membrane for ethanol concentration, and fuel-grade ethanol purification by pressure swing distillation (PSD), was optimized in continuous mode using the equation-based software General Algebraic Modelling System (GAMS). The novel wheat biorefining strategy could result in a production cost within the range of dollars 0.96-0.50 gal(-1) ethanol (dollars 0.25-0.13 L(-1) ethanol) when the production capacity of the plant is within the range of 10-33.5 million gal y(-1) (37.85-126.8 million L y(-1)). The production of value-added byproducts (e.g., bran-rich pearlings, gluten, pure yeast cells) was identified as a crucial factor for improving the economics of fuel ethanol production from wheat. Integration of yeast fermentation with pervaporation membrane could result in the concentration of ethanol in the fermentation outlet stream (up to 40 mol %). The application of a PSD system that consisted of a low-pressure and a high-pressure column and employing heat integration between the high- and low-pressure columns resulted in reduced operating cost (up to 44%) for fuel-grade ethanol production.

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