Heterogeneous Catalytic Distillation - A Patent Review

Lutze, Philip; Dada, Emmanuel A.; Gani, Rafiqul; Woodley, John M.

doi:10.2174/2211334711003030208

Cited by 13 publications

(3 citation statements)

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“…Over the past few decades, reactive distillation (RD) has positioned itself as a conventional technology within the scope of process intensification and is regularly considered in the conceptual design phase of new processes . Only a few processes applying RD exist as off-the-shelf solutions, but numerous RD columns are described in the literature , or available in patents . Well-known industrial applications of RD are the methyl acetate process by the Eastman-Kodak company, where 10 unit operations (two reactors and eight distillation columns) were reduced to a single RD column followed by two distillation columns to remove impurities .…”

Section: Introductionmentioning

confidence: 99%

“…A design for the column was obtained from previous work in the research group , stripping stages, seven reactive stages and four rectifying stages. An initial catalyst loading was obtained from the literature, in which Mo et al suggest a loading of 523.85; however, this is at a much lower feed rate of approximately 1 mol/s methyl lactate .…”

Section: Introductionmentioning

confidence: 99%

“…1 Only a few processes applying RD exist as off-the-shelf solutions, but numerous RD columns are described in the literature 2,3 or available in patents. 4 Well-known industrial applications of RD are the methyl acetate process by the Eastman-Kodak company, where 10 unit operations (two reactors and eight distillation columns) were reduced to a single RD column followed by two distillation columns to remove impurities. 5 Another example is the production of Methyl-tert butylether via the Huls Ethermax process, applying a heterogeneous catalyst in a packed column, also known as catalytic distillation (CD).…”

Section: ■ Introductionmentioning

confidence: 99%

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Determination of the Minimum Catalyst Amount in the Design of Catalytic Distillation Columns

Kroeze

Braakhuis

Kate

et al. 2021

Ind. Eng. Chem. Res.

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This paper presents a method to determine the minimum amount of a catalyst needed to operate a heterogeneously catalyzed reactive distillation column based on kinetic and VLE data only, avoiding rigorous column simulations. Good initial estimates for catalyst loadings are rarely discussed, and shortcut methods are lacking. The described method determines the highest possible reaction rate using known kinetics and column stage temperatures obtained from ternary diagrams of the column top and bottom sections, neglecting the highest or lowest boiler of the column, respectively. The method was validated against several literature cases. From these cases, it could be determined that a conservative estimate for the amount of the catalyst in the early design phase is six times the minimum catalyst found using the method described. Additionally, the presented method provides information regarding the operability of the column, for example, related to catalyst deactivation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Determination of the Minimum Catalyst Amount in the Design of Catalytic Distillation Columns

Kroeze

Braakhuis

Kate

et al. 2021

Ind. Eng. Chem. Res.

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Emerging applications of process intensification for enhanced separation and energy efficiency, environmentally friendly sustainable adsorptive separations: A review

Kopaç

2021

Int J Energy Res

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Process intensification (PI) is devoted to obtaining safer, smaller, cost-effective, environmentally friendly, energy-efficient and sustainable technologies, playing a major role in chemical process industries. Conventional technologies applied in the adsorptive separations may suffer from low selectivities, conversions and energy efficiencies; higher costs, kinetic and thermodynamic limitations related to the specific separation systems. Suitable PI techniques based on material, equipment and process development methodologies can play a major role in the proper organization of the adsorption separations. This article provides an overview of the concept of PI, starting from the history and its evolution over the years. Recent advances on the adsorptive separation applications through chemical PI are discussed with illustrative examples. Type of adsorption technology, intensification technique in terms of various intensification parameters are illustrated for a variety of adsorption separation systems. Product purity, productivity, gas uptake, recovery, separation efficiency, adsorbent property, bed volume, production yield, selectivity, energy efficiency, process cost and environmental sustainability are among the intensification parameters involved depending on the type of the separation system. The significant process enhancements achieved through PI in the examples are given. Conclusions, perspectives and future approaches are proposed with the aim for further contribution to the development of adsorption separations. Novelty statementSince the concept of process intensification (PI) has been introduced in the early 80s, a quite diverse range of definitions have been offered for PI during the years, which do not involve an exact standard definition that has been accepted commonly. Since then, PI has been a rapidly growing field in chemical process industries and generated many innovative processes, resulting in higher production yields, higher recovery, high-purity products, energy-efficient, cost competitive and environmental-friendly sustainable clean technologies. The paper aims to compile the concepts and definitions of PI proposed by different researchers starting from the first limited definitions until the more extensive recent ones. Then the recent advances on the various adsorptive

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