Results 31 to 40 of about 387 (144)

Additives in Biphasic Hydroformylation: An Analysis of the Influence of the Interfacial Area

Chemie Ingenieur Technik, Volume 97, Issue 5, Page 378-394, May 2025.
Optimizing homogeneous biphasic hydroformylation offers significant potential for improving chemical efficiency by use of additives or by investigating different stirrer and reactor designs. Traditionally, efforts have focused on conversion rates and selectivity, but advanced techniques such as high‐pressure borescopy now allow detailed in‐situ ...
Frederike S. Heinen, Jeroen T. Vossen, Andreas J. Vorholt   +2 more
wiley   +1 more source

Simultaneous optimization of simulated moving bed adsorption and distillation for 2,3‐butanediol recovery

AIChE Journal, Volume 71, Issue 2, February 2025.
Abstract A combined simulated moving bed (SMB) and distillation separation scheme is developed to recover 2,3‐butanediol (BDO) from a dilute fermentation broth. The scheme was integrated into a lignocellulosic biorefinery that produces hydrocarbon fuels from corn stover with BDO as an intermediate.
Marco Avendano, Qiang Fu, Jianpei Lao, Sankar Nair, Matthew J. Realff   +4 more
wiley   +1 more source

A reinforcement learning approach with masked agents for chemical process flowsheet design

AIChE Journal, Volume 71, Issue 1, January 2025.
Abstract This study introduces two novel Reinforcement Learning (RL) agents for the design and optimization of chemical process flowsheets (CPFs): a discrete masked Proximal Policy Optimization (mPPO) and a hybrid masked Proximal Policy Optimization (mHPPO).
Simone Reynoso‐Donzelli, Luis Alberto Ricardez‐Sandoval   +1 more
wiley   +1 more source

Model Development and Simulation of Anaerobic Digestion Process Using Aspen Plus

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
Cleaner energy, particularly biogas, is urgently needed. Biogas is generated via anaerobic digestion (AD), decomposing organic materials without oxygen. AD simulation models are appreciated for their cost‐effectiveness and predictive accuracy. This study creates a process model with Aspen Plus to simulate AD and biogas production.
Amir Sheikhi, Majid Rasouli, Fatemeh Boshagh   +2 more
wiley   +1 more source

Prediction of Phase Equilibria of Li － Na － K －Mg － Cl － SO₄ － H₂O System at Multiple Temperatures

, 2021
Based on the extended UNIQUAC model，phase equilibria of six quinary subsystems of the simplified water-salt system Li － Na － K － Mg － Cl － SO4 － H2O were computed by using software AQSOL027． The computing phase diagrams were compared to experimental ...
Jun, Li, Wu, Li, Rui-zhi, Cui, Thomsen, Kaj, Guo-liang, Nie   +4 more
core   +1 more source

Separation of Isoprenol‐Dimethyldioxane Mixture by Vacuum and Extractive Distillation

International Journal of Chemical Engineering, Volume 2025, Issue 1, 2025.
This study investigates the isolation of commercial isoprenol, a by‐product of large‐scale isoprene production. The challenge lies in separating isoprenol from an azeotropic mixture with 4,4‐dimethyldioxane‐1,3. The separation processes considered are vacuum and extractive distillation.
Alexander V. Klinov, Alexander V. Malygin, Alina R. Khairullina, Sébastien Déon   +3 more
wiley   +1 more source

Optimal design of reduced vapor transfer dividing wall structures with and without heat integration

AIChE Journal, Volume 70, Issue 11, November 2024.
Abstract A dividing wall column (DWC) is a prime example of process intensification, whereby significant energy and cost savings can be achieved for some systems compared to operation in conventional design of two columns in series. It has been theorized that the vapor and liquid thermal coupling streams in the DWC could be replaced by liquid‐only ...
Fanyi Duanmu, Eva Sorensen
wiley   +1 more source

Liquid‐Liquid Phase Equilibrium of Glycerolysis Precursors: Experimental and Modeling Study

Chemical Engineering &Technology, Volume 47, Issue 1, Page 208-216, January 2024.
Glycerol and oleic acid are mutually immiscible components. Their rigorous reaction produces glycerol esters and water. Such mutual immiscibility of glycerol and free fatty acids limits glycerolysis, a reaction capable of upgrading waste‐derived oils. The glycerol solubility in the fatty phase increases when glycerol esters are added to the immiscible ...
Kapil Mamtani, Christian L. da Silveira, Mohammed M. Farid, Kaveh Shahbaz   +3 more
wiley   +1 more source

Biogas Production Optimization in the Anaerobic Codigestion Process: A Critical Review on Process Parameters Modeling and Simulation Tools

Journal of Chemistry, Volume 2024, Issue 1, 2024.
Many operational parameters, either discretely or collectively, can influence the biodegradation performance towards enhancing biogas yield and quality. Among the operating parameters, organic loading rate (OLR), inoculum‐substrate ratio, and carbon‐nitrogen ratio (C/N) are the most critical parameters in the optimization and enhancement of biogas ...
Mohammed Kelif Ibro, Venkata Ramayya Ancha, Dejene Beyene Lemma, Claudio Di Iaconi   +3 more
wiley   +1 more source

Application of the mass-based UNIQUAC model to membrane systems: A critical revision

, 2012
The UNIQUAC model is very suitable in describing (liquid + liquid) as well as (vapor + liquid) equilibrium for a wide range of systems. It can be extended to (solvent + polymer) systems for describing sorption equilibria.
Van der Bruggen, Bart, Chovau, Simon, Luis Alconero, Patricia, Van Der Bruggen, B., Luis, Patricia, Chovau, S.   +5 more
core   +1 more source