Reactor Engineering Aspects of the Lateral Flow Reactor

Autor:	René Bos, Laurien Vandewalle, Shauvik De, Kevin Van Geem, Guy B. Marin
Rok vydání:	2020
Předmět:	Pressure drop Uniform distribution (continuous) business.industry General Chemical Engineering Nuclear engineering Kinetics Flow (psychology) Selective catalytic reduction General Chemistry Computational fluid dynamics Industrial and Manufacturing Engineering Mass transfer business NOx
Zdroj:	Industrial & Engineering Chemistry Research. 59:11157-11169
ISSN:	1520-5045 0888-5885
DOI:	10.1021/acs.iecr.0c01229
Popis:	A lateral flow reactor (LFR) is a low pressure drop fixed bed reactor especially suitable for end-of-pipe treatment, for example, the Shell DeNO(x) system for selective catalytic reduction of NOx. Inherently, an LFR is prone to flow maldistribution, which in turn may negatively affect conversion. A detailed study of the hydrodynamics and overall reactor performance of an LFR is presented. The characterization of the flow patterns is carried out in detail with a 2D computational fluid dynamics (CFD) model. In addition, a "double 1D" hydrodynamic model is developed and validated against the CFD results. This computationally much more efficient model is extended with catalytic reaction kinetics, accounting for intraparticle mass transfer limitations. LFR efficiency can be defined as the ratio of the amount of catalyst needed in a fixed bed with uniform distribution over the amount of catalyst needed in the LFR to reach the same overall conversion. Despite the inherently limited flow uniformity, this efficiency of the LFR remains higher than 95% as long as the flow uniformity is above 50%, that is, for nearly all practical cases.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::535447b09cb4d80cf0300404f6b1b831 https://doi.org/10.1021/acs.iecr.0c01229 Zobrazit plný text záznamu