Mixing in the NETmix Reactor

• Type: Article in International Scientific Journal
• Date: 2021-11-12

Authors

Joana Matos (Author) Other; Ricardo J. Santos (Author) FEUP; Madalena M. Dias (Author) FEUP; José Carlos B. Lopes (Author) FEUP

Journal

The Journal is awaiting validation by the Administrative Services.

Title: Frontiers in Chemical Engineering

Vol. 167

Associated Projects

LA LSRE-LCM - Financiamento Plurianual 2020-2023 para a Unidade LA LSRE-LCM Laboratório de Processos de Separação e Reacção - Laboratório de Catálise e Materiais

Other information

Authenticus ID: P-00W-8PH

DOI: 10.3389/fceng.2021.771476

Abstract (EN): <jats:p>NETmix is a static mixing reactor composed of a network of mixing chambers interconnected by channels. The repetitive mixing pattern inside the reactor enables the use of reduced geometries to represent the NETmix network, such as the ExtendedNUB model, used in this work. Mixing in NETmix is based on the impingement of jets, issuing from channels. Inside the chambers, the jets are engulfed by dynamic vortices which can be quantified using Lagrangian techniques. Batch Lagrangian Mixing Simulation (BLMS) is based on successive injections of particles to measure the fraction of the fluids at the outlet of the mixing chambers. The distribution of the outlet fraction of particles indicates that it is possible to have nearly perfect mixing inside the NETmix chambers, depending on the dimensions of the channels and chambers. The NETmix design is here optimized in relation to the chamber diameter to channel width ratio, <jats:inline-formula><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="m1"><mml:mrow><mml:mi>D</mml:mi><mml:mo>/</mml:mo><mml:mi>d</mml:mi></mml:mrow></mml:math></jats:inline-formula>. Results from BLMS show that best performance in NETmix occurs for <jats:inline-formula><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="m2"><mml:mrow><mml:mn>6.65</mml:mn><mml:mo>¿</mml:mo><mml:mi>D</mml:mi><mml:mo>/</mml:mo><mml:mi>d</mml:mi><mml:mo>¿</mml:mo><mml:mn>6.85</mml:mn></mml:mrow></mml:math></jats:inline-formula>.</jats:p>

Language: English

Type (Professor's evaluation): Scientific