Reactive distillation — industrial applications, process design & scale-up

2001 ◽  
Vol 56 (2) ◽  
pp. 387-394 ◽  
Author(s):  
A Tuchlenski ◽  
A Beckmann ◽  
D Reusch ◽  
R Düssel ◽  
U Weidlich ◽  
...  
Keyword(s):  
Process Design ◽  
Reactive Distillation ◽  
Scale Up ◽  
Industrial Applications

scholarly journals Dynamic modeling of the isoamyl acetate reactive distillation process

2017 ◽  
Vol 19 (1) ◽  
pp. 59-66 ◽  
Author(s):  
Syed Sadiq Ali ◽  
Sk Safdar Hossain ◽  
Mohammad Asif
Keyword(s):  
Dynamic Modeling ◽  
Process Parameters ◽  
Reactive Distillation ◽  
Scale Up ◽  
Isoamyl Acetate ◽  
Industrial Applications ◽  
Process Conditions ◽  
Whole Process ◽  
Product Flow ◽  
The Stability

Abstract The cost-effectiveness of reactive distillation (RD) processes makes them highly attractive for industrial applications. However, their preliminary design and subsequent scale-up and operation are challenging. Specifically, the response of RD system during fluctuations in process parameters is of paramount importance to ensure the stability of the whole process. As a result of carrying out simulations using Aspen Plus, it is shown that the RD process for isoamyl acetate production was much more economical than conventional reactor distillation configuration under optimized process conditions due to lower utilities consumption, higher conversion and smaller sizes of condenser and reboiler. Rigorous dynamic modeling of RD system was performed to evaluate its sensitivity to disturbances in critical process parameters; the product flow was quite sensitive to disturbances. Even more sensitive was product composition when the disturbance in heat duties of condenser or reboiler led to a temperature decrease. However, positive disturbance in alcohol feed is of particular concern, which clearly made the system unstable.

scholarly journals Taguchi optimization and scale up of xylanase from Bacillus licheniformis isolated from hot water geyser

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Girisha Malhotra ◽  
Shilpa S. Chapadgaonkar
Keyword(s):  
Process Parameters ◽  
Wheat Bran ◽  
Scale Up ◽  
Industrial Applications ◽  
Hot Water ◽  
Optimization Strategy ◽  
Taguchi Optimization ◽  
Xylanase Production ◽  
Alkali Tolerance ◽  
Optimized Conditions

Abstract Background Xylanase is one of the widely applied industrial enzymes with diverse applications. Thermostability and alkali tolerance are the two most desirable qualities for industrial applications of xylanase. In this paper, we reveal the statistical Taguchi optimization strategy for maximization of xylanase production. The important process parameters pH, temperature, concentration of wheat bran, and concentration of yeast extract were optimized using the Taguchi L8 orthogonal array where the 4 factors were considered at 2 levels (high and low). Results The optimized conditions given by model were obtained as follows: (i) pH 6, (ii) culture temperature 35 °C, (iii) concentration of xylan 2% w/v, (iv) concentration of wheat bran 2.5% w/v. The production was scaled upto 2.5 L bioreactor using optimized process parameters. A high xylanase titer of 400 U/ml could be achieved in less than 60 h of culture in the reactor. Conclusion Optimization was successful in achieving about threefold increase in the yield of xylanase. The optimized conditions resulted in a successful scale up and enhancement of xylanase production.

The reverse water gas shift reaction: a process systems engineering perspective

2021 ◽  
Author(s):  
Miriam González-Castaño ◽  
Bogdan Dorneanu ◽  
Harvey Arellano-García
Keyword(s):  
Systems Engineering ◽  
Process Design ◽  
Process Intensification ◽  
Industrial Applications ◽  
Catalytic Systems ◽  
Process Systems ◽  
Reverse Water Gas Shift ◽  
Reaction Thermodynamics ◽  
Rwgs Reaction ◽  
Shift Reaction

RWGS reaction thermodynamics, mechanisms and kinetics. Process design and process intensification – from lab scale to industrial applications and CO2 value chains. Pathways for further improvement of catalytic systems, reactor and process design.

Esso Energy Award Lecture, 1981 - New concepts in thermodynamics for better chemical process design

1983 ◽  
Vol 386 (1790) ◽  
pp. 1-33 ◽  
Keyword(s):  
Process Design ◽  
Heat Recovery ◽  
Industrial Applications ◽  
Second Law ◽  
Design Development ◽  
Chemical Process Design ◽  
New Concepts ◽  
Second Law Analysis ◽  
Heat Exchanger Networks ◽  
Simple Network

Most chemical processes are networks of different pieces of equipment. Usually, even the best pieces of equipment will give a poor overall process if linked up inappropriately in the network. This paper describes principles and procedures for better process network design. Development of the procedures began in 1972. In the years since, industrial applications have led to significant improvements in even the most modern processes. The paper begins with a fresh look at thermodynamic Second Law analysis. This classical analysis highlights inefficient parts of complex systems, drawing the engineer’s attention to excessive losses of potential. Unfortunately, the analysis is both difficult to produce and difficult to interpret. To tackle the first problem, the paper describes how Second Law information can be obtained from conventional heat and mass balances. There is no need for additional data. To tackle the second problem, the paper introduces a general distinction between ‘avoidable’ and ‘inevitable’ inefficiencies. This makes an interpretation of the analysis practically more meaningful. Next, the paper describes thermodynamic procedures and principles for specialized sub-tasks in process design. Emphasis is placed on heat recovery networks. Here, the problem is to recover as much heat as is economically justified within a process before externally supplied heat is used. The concept of ‘inevitable’ inefficiencies leads to techniques for the prediction of the ‘inevitable’ amount of external heating. This amount is called the energy target. The target either stimulates the engineer into achieving it or gives him confidence that his design is optimal. The paper continues by describing the concept of the heat recovery ‘pinch’. The pinch leads to the design of, first, heat exchanger networks, which achieve the energy targets, and, second, overall processes, which keep the targets low. Two common threads in all these procedures are the attempt to keep the engineer involved (they do not constitute ‘automatic’ design) and the attempt to make best practical use of inefficiencies that are ‘inevitable’ anyway. Owing to these features, the procedures usually help the engineer to find processes that are elegant in a general sense. Many designs found in practice were not only energy efficient but easily operated and maintained, safe, had relatively simple network structures and, most surprisingly, were cheap to build as well as cheap to run.

Application of the Continuous Rheoconversion Process (CRP) to Low Temperature HPDC-Part I: Microstructure

2006 ◽  
Vol 116-117 ◽  
pp. 402-405 ◽  
Author(s):  
Qin Yue Pan ◽  
Stuart Wiesner ◽  
Diran Apelian
Keyword(s):  
Low Temperature ◽  
Scale Up ◽  
Microstructural Characterization ◽  
Industrial Applications ◽  
Primary Phase ◽  
Heat Extraction ◽  
Initial Stage ◽  
Fraction Solid ◽  
Die Castings

The continuous rheoconversion process (CRP) is a novel slurry-on-demand process that was developed at MPI/WPI in 2002. The process is based on a passive liquid mixing technique in which the nucleation and growth of the primary phase are controlled using a specially designed “reactor”. The reactor provides heat extraction, copious nucleation, and forced convection during the initial stage of solidification, thus leading to the formation of globular structures. This paper presents our recent work on the scale-up of the CRP for industrial applications. Specifically, we demonstrate an important application of the CRP to low temperature (low fraction solid) HPDC. In Part I of this paper, we present salient results on microstructural characterization of CRP processed castings vs. conventional die castings.

scholarly journals Phase Behavior that Enables Solvent-Free Carbonate-Promoted Furoate Carboxylation

2020 ◽  
Author(s):  
Amy Frankhouser ◽  
Matthew Kanan
Keyword(s):  
Phase Behavior ◽  
Process Design ◽  
Heterogeneous Reaction ◽  
Scale Up ◽  
Solvent Free

<div><div><div><p>A solvent-free transformation that enables production of polyester precursors from inedible biomass proceeds from a heterogeneous reaction mixture containing both solid and molten components. Characterization of the evolution of these component phases over the course of the reaction provides insight relevant to process design and scale-up.</p></div></div></div>

Sign in / Sign up

Export Citation Format

Share Document