The investment and annual costs for a separation of aromatic hydrocarbons from a naphtha feed (~10 % aromatics) can be 35 to 70 % lower for an extraction with ionic liquids compared to an extraction with sulfolane. Aromatic hydrocarbons (benzene, toluene, ethyl benzene and xylenes) and C4 C10 aliphatic hydrocarbons are normally separated by liquid extraction, extractive distillation or azeotrop...

• COSMO-RS method to evaluate extractive properties of ionic liquid + propylene carbonate pair in water. Experimental characterization phase equilibria for determination water impact the catalytic activity selected liquids. COSMO/Aspen tool models and simulates close-cycle processes Hydrophilicity within novel separation scheme stands as optimization key process. Ionic liquids (ILs) have been e...

Objectives . To investigate the effectiveness of various options for organizing process diabatic distillation in separation a mixture acetone–toluene–n-butanol by extractive (ED) with dimethylformamide as an entrainer scheme where is used first column. Methods Mathematical modeling Aspen Plus v. 12.1 software package was primary research method. The local Non-Random Two Liquid composition equat...

There are several challenges for ABE fermentation to be used in an industrial scale including the low of butanol yield, high energy requirement separation and purification, competeness sugar with food demand as substrat. In this study, techno-economical aspects by using immobilized cells large extractant volume were studied. Overall production process was designed rice straw raw material which ...

The production of anhydrous ethanol, due to the presence azeotrope, is difficult using conventional distillation, at pressure atmospheric, as a separation process. One methods used extractive consisting in addition third substance capable change vapor-liquid equilibrium system and obtaining dehydration ethanol. Therefore, ethanol process propylene glycol solvent was evaluated ProSimPlus softwar...

In this work, the ethanol fuel dehydration process was optimized using Aspen Plus? simulator and a multivariate statistical technique based on desirability function. The suitability of ionic liquids 1-methylimidazolium chloride ([Mim][Cl]), 1-ethyl-3-methylimidazolium ([Emim][Cl]), 1-butyl- -3-methylimidazolium ([Bmim][Cl]) 1-hexyl-3-methylimidazolium ([Hmim][Cl]), as extractive distillation en...

Twenty 70-year-old longleaf pine trees from a spacing, thinning, and pruning study were harvested, from which samples were analyzed for gross calorific value (GCV). A strong correlation was found between GCV and extractive contents for the unextracted wood samples. Although lignin content should impact GCV, no correlation was found between the variation in GCV with lignin content for the extrac...

The increasing need for sustainable processes stimulates the production and recovery of renewable organic acids. purification these acids is often difficult because similar acid volatilities but can be improved through extractive distillation. Generic insights into solvent effects on separation efficiency close-boiling are however lacking. This study provides effect acidity, acidity difference ...

Social media such as Twitter have become an important method of communication, with potential opportunities for NLG to facilitate the generation of social media content. We focus on the generation of indicative tweets that contain a link to an external web page. While it is natural and tempting to view the linked web page as the source text from which the tweet is generated in an extractive sum...