Experimental analysis of ammonia–water rectification in absorption systems with the 10mm metal Pall ring packing

Sieres, Jaime; Fernández-Seara, José; Uhía, Francisco J.

doi:10.1016/j.ijrefrig.2007.05.009

Cited by 13 publications

(5 citation statements)

References 21 publications

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“…This could be part of the reason why some of the industry standards such as Berl saddles and Pall rings are used in packed bed reactors instead of dimpled spheres. 29 Using computational fluid dynamics techniques inherently introduces error. Generally, these software packages calculate fluid parameters by iteratively solving the equations for transport and energy balances based on user defined boundary conditions.…”

Section: Discussionmentioning

confidence: 99%

Computational Modeling of Textured Enzyme Immobilizing Scaffolds in a Packed Bed Reactor

Rojnuckarin

Baker

Foster

2022

Preprint

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Understanding and analyzing heterogeneous reactions in packed bed reactors is important in many applications. Here we present a computational model to investigate the impact of surface texturing on enzyme immobilizing scaffolds in a packed bed environment. It was hypothesized that the implementation of surface texturing would increase the overall reactive surface area of the bed and thus improve reactor efficiency. The model utilizes computational fluid dynamics (CFD) to solve the transport, multi-component flow, and reaction kinetic equations. A stochastic algorithm for random packing of sphere-like particles was also implemented to mimic the random packing that exists in a typical packed bed. This model analyzes the many coupled forms of transport and reaction kinetics that exist in a packed bed reactor with the goal of improved resolution and understanding of the system. The impact of form drag as it relates to scaffold geometry on outlet product concentration is included.

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Section: Discussionmentioning

confidence: 99%

Computational Modeling of Textured Enzyme Immobilizing Scaffolds in a Packed Bed Reactor

Rojnuckarin

Baker

Foster

2022

Preprint

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“…Packing should also be compatible with the material that being distilled or eliminated. Initially, random packing materials such as Propak, helipak, and wire mesh have been used for the absorption of pollutants and are all made from metal [56][57][58][59][60]. Under higher acid [61,62] and basic [63,64] conditions, plastic packing materials have been chosen to prevent corrosion.…”

Section: Column Reactormentioning

confidence: 99%

A review on an electrochemically assisted-scrubbing process for environmental harmful pollutant's destruction

Muthuraman

Moon

2012

Journal of Industrial and Engineering Chemistry

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“…Particularly, the ammonia gas is one of the key contributors of air pollution, which leads to the deterioration of the atmospheric environment . Because a packed tower's operation is considered to be cost‐effective, ammonia–water absorption columns are nowadays gaining popularity to eliminate environmental problems associated with the ammonia emission …”

Section: Introductionmentioning

confidence: 99%

“…Although there are several other successful studies in the recent literature on the packed columns, distillation columns and packed media, there are almost no systematic papers regarding the implementation of different mathematical analogies leading to the formulation of novel prediction models, which can directly be used for the packed tower design in physical ammonia absorption. To the best of the author's knowledge, the present paper is the first study specifically devoted to a study of composite desirability function‐based empirical modeling for the prediction of packed column diameter and packing height in ammonia absorption.…”

Section: Introductionmentioning

confidence: 99%

Composite desirability function‐based empirical modeling for packed tower design in physical ammonia absorption

Yetilmezsoy

2011

Asia-Pacific J Chem Eng

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This paper describes two new empiricial models based on the composite desirability function methodology for the prediction of packed column diameter and packing height in solving problems of physical ammonia absorption. The computational analysis including a total of 131 absorption scenarios were conducted for six fundamental operating parameters such as inlet gas flow rate (500–5000 m3/h), solute concentration in the inlet gas (5–10%), desired removal efficiency (87–98%), operating temperature (10–60 °C), percentage of the minimal liquid‐to‐gas flow rates ratio (24–52%) and percent of flooding velocity (30–80%). The ceramic Raschig rings were selected as one of the most common packing types for the present analysis. The column diameter to packing size ratio were considered to be greater than 30 for a total of 500 packing sizes (0.01–5 inches in diameter) included in the numerical cycle. New non‐linear regressions as the functions of packing factor, packing size and various transfer unit constants (α, β, γ, η and ϕ) were implemented in the prediction scheme of the proposed empirical models. The performance of the models was evaluated with various descriptive statistical indicators. The testing results showed that all predictions were proven to be satisfactory with very high determination coefficients of about R2 = 0.997 and R2 = 0.963 for the packed column diameter and required packing height, respectively. © 2011 Curtin University of Technology and John Wiley & Sons, Ltd.

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Experimental analysis of ammonia–water rectification in absorption systems with the 10mm metal Pall ring packing

Cited by 13 publications

References 21 publications

Computational Modeling of Textured Enzyme Immobilizing Scaffolds in a Packed Bed Reactor

Computational Modeling of Textured Enzyme Immobilizing Scaffolds in a Packed Bed Reactor

A review on an electrochemically assisted-scrubbing process for environmental harmful pollutant's destruction

Composite desirability function‐based empirical modeling for packed tower design in physical ammonia absorption

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