Modeling of a reactive separation process using a nonequilibrium stage model

1998 ◽  
Vol 22 ◽  
pp. S111-S118 ◽  
Author(s):  
Arnoud Higler ◽  
Ross Taylor ◽  
R. Krishna
Keyword(s):  
Separation Process ◽  
Stage Model ◽  
Reactive Separation

A Continuous Reactive Separation Process for Ethyl Lactate Formation

2005 ◽  
Vol 9 (5) ◽  
pp. 599-607 ◽  
Author(s):  
Navinchandra Asthana ◽  
Aspi Kolah ◽  
Dung T. Vu ◽  
Carl T. Lira ◽  
Dennis J. Miller
Keyword(s):  
Separation Process ◽  
Ethyl Lactate ◽  
Lactate Formation ◽  
Reactive Separation

scholarly journals Contribution of the Reactive Separation Process to Methanol Recovery and Biodiesel Characteristics

2020 ◽  
pp. 20-25
Author(s):  
Yoel Pasae ◽  
Eda Lolo Allo ◽  
Lyse Bulo
Keyword(s):  
Chemical Reaction ◽  
Palm Oil ◽  
Separation Process ◽  
Transesterification Reaction ◽  
Raw Material ◽  
Reaction Process ◽  
National Standard ◽  
Reversible Reaction ◽  
Reactive Separation ◽  
Separation Equipment

The chemical reaction that occurs in the biodiesel processing is a type of reversible reaction between oil and methanol. Therefore, to increase the conversion of the reaction, the amount of methanol used is more than the stoichiometric equilibrium. The excess methanol is often difficult to recover after washing biodiesel. Determine of the contribution of the reactive separation process to methanol recovery and biodiesel characteristics are the focus of this study. The transesterification reaction process is carried out in reactive separation equipment, using palm oil as raw material, NaOH, and super base CaO as the catalyst. The results showed that the reactive separation process could recover methanol as much as 55.88% for the reaction process using a NaOH catalyst, and 52.94% for the reaction process using a super base CaO catalyst. The biodiesel characteristics produced to meet the criteria set out in the Indonesian National Standard.

An Integrated Reactive Separation Process for Co-Hydrotreating of Vegetable Oils and Gasoil to Produce Jet Diesel

2018 ◽  
pp. 839-844 ◽  
Author(s):  
Miriam García-Sánchez ◽  
Mauricio Sales-Cruz ◽  
Teresa López-Arenas ◽  
Tomás Viveros-García ◽  
Alberto Ochoa-Tapia ◽  
...  
Keyword(s):  
Vegetable Oils ◽  
Separation Process ◽  
Reactive Separation

scholarly journals A carbon molecular sieve membrane-based reactive separation process for pre-combustion CO2 capture

2020 ◽  
Vol 605 ◽  
pp. 118028 ◽  
Author(s):  
Mingyuan Cao ◽  
Linghao Zhao ◽  
Dongwan Xu ◽  
Richard Ciora ◽  
Paul K.T. Liu ◽  
...  
Keyword(s):  
Co2 Capture ◽  
Molecular Sieve ◽  
Separation Process ◽  
Carbon Molecular Sieve ◽  
Reactive Separation

A reactive separation process for pre-combustion CO2 capture employing oxygen-blown coal gasifier off-gas

2020 ◽  
pp. 127694
Author(s):  
Mingyuan Cao ◽  
Linghao Zhao ◽  
Dongwan Xu ◽  
Doug Parsley ◽  
Richard Ciora ◽  
...  
Keyword(s):  
Co2 Capture ◽  
Separation Process ◽  
Coal Gasifier ◽  
Reactive Separation

scholarly journals An Intensified Reactive Separation Process for Bio-Jet Diesel Production

Processes ◽  
2019 ◽  
Vol 7 (10) ◽  
pp. 655 ◽  
Author(s):  
Miriam García-Sánchez ◽  
Mauricio Sales-Cruz ◽  
Teresa Lopez-Arenas ◽  
Tomás Viveros-García ◽  
Eduardo S. Pérez-Cisneros
Keyword(s):  
Fatty Acids ◽  
Separation Process ◽  
Operating Conditions ◽  
International Standards ◽  
Feed Ratio ◽  
Two Phase ◽  
Distillation Columns ◽  
Operating Variables ◽  
Triglyceride Hydrolysis ◽  
Reactive Separation

An intensified three-step reaction-separation process for the production of bio-jet diesel from tryglycerides and petro-diesel mixtures is proposed. The intensified reaction-separation process considers three sequentially connected sections: (1) a triglyceride hydrolysis section with a catalytic heterogeneous reactor, which is used to convert the triglycerides of the vegetable oils into the resultant fatty acids. The separation of the pure fatty acid from glycerol and water is performed by a three-phase flash drum and two conventional distillation columns; (2) a co-hydrotreating section with a reactive distillation column used to perform simultaneously the deep hydrodesulphurisation (HDS) of petro-diesel and the hydrodeoxigenation (HDO), decarbonylation and decarboxylation of the fatty acids; and (3) an isomerization-cracking section with a hydrogenation catalytic reactor coupled with a two-phase flash drum is used to produce bio-jet diesel with the suitable fuel features required by the international standards. Intensive simulations were carried out and the effect of several operating variables of the three sections (triglyceride-water feed ratio, oleic acid-petro-diesel feed ratio, hydrogen consumption) on the global intensified process was studied and the optimal operating conditions of the intensified process for the production of bio-jet diesel were achieved.

The Solution Strategy as an Indicator of the Developmental Stage of Preschool Children’s Mental-Rotation Ability

2010 ◽  
Vol 31 (2) ◽  
pp. 95-100 ◽  
Author(s):  
Claudia Quaiser-Pohl ◽  
Anna M. Rohe ◽  
Tobias Amberger
Keyword(s):  
Preschool Children ◽  
Mental Rotation ◽  
Latent Class ◽  
Preschool Age ◽  
Stage Model ◽  
Solution Strategy ◽  
Thinking Aloud ◽  
Transition Analysis ◽  
Solution Strategies ◽  
Close Relationship

The solution strategies of preschool children solving mental-rotation tasks were analyzed in two studies. In the first study n = 111 preschool children had to demonstrate their solution strategy in the Picture Rotation Test (PRT) items by thinking aloud; seven different strategies were identified. In the second study these strategies were confirmed by latent class analysis (LCA) with the PRT data of n = 565 preschool children. In addition, a close relationship was found between the solution strategy and children’s age. Results point to a stage model for the development of mental-rotation ability as measured by the PRT, going from inappropriate strategies like guessing or comparing details, to semiappropriate approaches like choosing the stimulus with the smallest angle discrepancy, to a holistic or analytic strategy. A latent transition analysis (LTA) revealed that the ability to mentally rotate objects can be influenced by training in the preschool age.

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