Preliminary Design of Reactive Distillation Columns

2005 ◽  
Vol 83 (4) ◽  
pp. 379-400 ◽  
Author(s):  
R. Thery ◽  
X.M. Meyer ◽  
X. Joulia ◽  
M. Meyer
Keyword(s):  
Reactive Distillation ◽  
Preliminary Design ◽  
Distillation Columns

scholarly journals Performance Indicators in Reactive Distillation Design

2009 ◽  
Vol 4 (4) ◽  
Author(s):  
Rui M Filipe ◽  
Henrique A Matos ◽  
Augusto Q Novais
Keyword(s):  
Performance Indicators ◽  
Reactive Distillation ◽  
Additional Term ◽  
Design Stage ◽  
Preliminary Design ◽  
Multi Objective Optimization ◽  
Distillation Columns ◽  
Preliminary Design Stage ◽  
Distillation Design ◽  
The Cost

A cost indicator for the design and multi-objective optimization of reactive distillation columns, designated capacity, was introduced in previous work by the authors. The question of this indicator's effectiveness as a measure of the actual column cost is herein investigated over a number of designs by comparing it with the value obtained by means of conventional costing procedures. The results show that the level of accuracy obtained when using capacity is satisfactory and certainly acceptable for a preliminary design stage. However, in the present work a further refinement of this indicator is proposed, with the incorporation of an additional term, which accounts for the cost of catalyst. This will ensure a more stringent choice of candidate configurations at the early stages of design.

scholarly journals Novel Hybrid Reactive Distillation with Extraction and Distillation Processes for Furfural Production from an Actual Xylose Solution

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1152
Author(s):  
Le Cao Nhien ◽  
Nguyen Van Duc Long ◽  
Moonyong Lee
Keyword(s):  
Production Process ◽  
Energy Use ◽  
Reactive Distillation ◽  
Process Efficiency ◽  
Continuous Stirred Tank Reactor ◽  
Butyl Chloride ◽  
Distillation Columns ◽  
Reactive Liquid ◽  
Pharmaceutical Industries ◽  
Furfural Production

Furfural is only derived from lignocellulosic biomass and is an important chemical used in the plastics, agrochemical, and pharmaceutical industries. The existing industrial furfural production process, involving reaction and purification steps, suffers from a low yield and intensive energy use. Hence, major improvements are needed to sustainably upgrade the furfural production process. In this study, the conventional furfural process based on a continuous stirred tank reactor and distillation columns was designed and optimized from an actual aqueous xylose solution via a biomass pretreatment step. Subsequently, a reactive distillation (RD) and extraction/distillation (ED) configuration was proposed for the reaction and purification steps, respectively, to improve the process efficiency. RD can remove furfural instantly from the reactive liquid phase and can separate heavy components from the raw furfural stream, while the ED configuration with toluene and butyl chloride used as extracting solvents can effectively separate furfural from a dilute aqueous stream. The results showed that the hybrid RD-ED process using a butyl chloride solvent saves up to 51.8% and 57.4% of the total investment costs and total annual costs, respectively, compared to the conventional process. Furthermore, environmental impacts were evaluated and compared for all structural alternatives.

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