Comparison of CO2 Separation Efficiency from Flue Gases Based on Commonly Used Methods and Materials

The comparison study of CO2 removal efficiency from flue gases at low pressures and temperatures is presented, based on commonly used methods and materials. Our own experimental results were compared and analyzed for different methods of CO2 removal...

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Experimental investigations of the influence of radial gas mixing in an inert ceramic foam bed on thermal combustion of lean methane-air mixtures

The paper discusses the application possibilities of ceramic foam in a thermal combustion process of a lean methane–air mixture. The experiments were done in a ceramic foam bed. The foam (Vukoporr A) was made mainly of Al2O3. The foam samples were...

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Innovative catalytic streamlined carriers with triangular channels

The paper presents research on a novel catalytic carrier, called “streamlined structure”. The carrier is a short-channel monolith, whose walls are shaped like an airfoil profile (airplane wing). The intention is heat transfer intensification...

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Effect of POCS geometry on fluid flow and heat transfer

Hydraulic and transport properties of periodic open cellular structures (POCS) based on cubic cells were investigated numerically. Different cell and strut dimensions, as well as strut shapes, were examined. Numerical results of heat transfer and flow...

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Effect of bed configuration and fluid properties on dispersion in solid foams

The results of a study on axial dispersion in commercially available open cell metal (Nickelchromium) and ceramic (Vukopor A) foams with different pore density are presented. Residence time distributions were determined using tracer pulse experiments...

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Zastosowanie fotokatalizy w syntezie metanolu z metanu

A review, with 56 refs., of research progress on the prodn. of MeOH from MeH using oxide photocatalysts: W, Ti, Bi, Zn, Mo, Ni, Ce and Ga, as well as zeolites and graphene C nitrides. The process conditions were presented, in particular the light sources...

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Identification of Local Isotropic Turbulence Conditions in Various Bubble Columns Based on Several Reliable Parameters

Bubble columns (BCs) are widely used in the chemical industry. In many industrial applications, these important gas-liquid contactors operate in a churn-turbulent flow regime. In principle, it is essential to determine the operating conditions in every...

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Flow phenomena in laminar flow through streamlined and sharp-edged short monolithic structures

Monolithic structures of catalytic reactors offer low flow resistance, but their drawback is weak heat and mass transport. For transport intensification, innovative streamlined structures were designed, the walls of which are shaped like an airplane...

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Novel Identifier of Transitions in Bubble Columns Operated with Water and Aqueous Alcohol Solutions

The accurate identification of the transition velocities Utransin bubble columns(BCs) is important for their effective design, operation, and scale-up. In this work,a novel parameter, namely, the new hybrid index (NHI), was developed and suc-cessfully...

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Prediction of Small Bubble Holdups in Bubble Columns Operated with Various Organic Liquids at Both Ambient and Elevated Pressures and Temperatures

This article focuses on the prediction of the small bubble holdups (assuming the existence of two major bubble classes) in two bubble columns (0.289 m in ID and 0.102 m in ID), operated with organic liquids under various conditions (including high temperature...

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A Continuous‐Flow Microreactor for Knoevenagel Condensation of Ethyl Cyanoacetate with Benzaldehyde: The Effect of Grafted Amino Groups on Catalytic Activity

Ethyl α-cyanocinnamate was synthesized in the Knoevenagel condensation of benzaldehyde and ethyl cyanoacetate in flow monolithic microreactor of 0.63 cm3 volume. The catalytically active core was made of silica monolith modified with various amine...

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Bifunctionalised acid-base hierarchically structured monolithic microreactor for continuous-flow tandem catalytic process of cyanocinnamate synthesis

The results on zirconia-amine bifunctional modification of hierarchically porous silica monoliths for continuous-flow processes ar presented. The study reports the synthesis and properties of the modified porous monoliths and their performance in the...

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