Experimental verification of 2-dimensional computational fluid dynamics modeling of supercritical fluids Fischer Tropsch reactor bed

A universal methodology for reliable predicting the non-steroidal anti-inflammatory drug solubility in supercritical carbon dioxide

“…Separation scenarios, including fluidization 1 , liquid–liquid extraction 2 , adsorption 3 , 4 , crystallization 5 , membrane 6 , 7 , and microfluid absorption 8 , are continuously engaged in different industrial processes. Moreover, the processes operated with the supercritical fluids have a wide range of applications in diverse fields, including extraction 9 , reaction 10 , food industry 11 , nanoparticle decoration 12 , nanosheet fabrication 13 , tissue engineering 14 , and pharmaceutical processing 15 . Water 16 , propane 17 , and carbon dioxide (CO 2 ) 18 are among materials potentially used as the supercritical medium.…”

Thermal Assessment of a Micro Fibrous Fischer Tropsch Fixed Bed Reactor Using Computational Fluid Dynamics

“…Fischer Tropsch (FT) synthesis, central to many gas-to-liquid (GTL) processes, is a process in which synthesis gas (or syngas, i.e., a mixture of H 2 and CO) is converted to a variety of hydrocarbon products including paraffin, olefins, and value-added chemicals [1][2][3][4][5][6]. FT synthesis is a highly exothermic reaction (the total heat released per mole of CO consumed is from 140 kJ/mol to 160 kJ/mol), and therefore, efficient heat removal is one of the main considerations while designing commercial-scale FT reactors [7,8].…”

“…On the other hand, the HTFT process mainly involves two phases (gas-solid) [21], which operates at temperatures from 593 K to 623 K, and utilizes fused iron-based catalysts to produce lighter hydrocarbons such as The latter, however, can be done by applying Computational Fluid Dynamics (CFD) to represent the fluid behavior inside the reactor bed accurately. In our previous work, a two-dimensional (2D) model was developed to study the effect of using a non-conventional Supercritical Fluid (SCF) reaction media on the heat management characteristics of the bed [3,5]. Moreover, Challiwala et al developed a 2D pseudo-homogenous model of an MFECC bed and conventional PBR using a simple kinetic model for a cobalt-based catalyst [9].…”

“…They analyzed the performance of the MFECC bed and PBR in terms of heat management and CO conversion at the various process and design parameters (inlet temperature, inlet flowrate, tube diameter). This study aims to extend on their works [3,5,9] and develop a 2D model of an FT fixed bed reactor (FB) in COMSOL ® Multiphysics v5.3a utilizing a detailed kinetic model for a cobalt-based catalyst for two systems; non-conventional MFECC bed and conventional PBR, both operating under gas-phase conditions (GP-FT). The model is used to study the effect of the thermal performance of both the reactor systems on conversion levels and hydrocarbon product selectivity.…”

Advances in Carbon Management Technologies

“…Syngas is a mixture of carbon monoxide and hydrogen and serves as an important intermediate to produce a large range of value-added chemicals (i.e., methanol, acetic acid, dimethyl ether, etc.) and ultra clean fuels via Fischer Tropsch (FT) technology (Abusrafa et al, 2019;Choudhury et al, 2019). Commercially, the reforming of methane is done via three well-known technologies: Steam Reforming of Methane (SRM), Partial Oxidation of Methane (POX) and Autothermal Reforming (ATR).…”