Topic
Spray tower
About: Spray tower is a research topic. Over the lifetime, 1028 publications have been published within this topic receiving 4715 citations.
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TL;DR: In this article, the performance of a deflector spray tower was compared with an open spray tower (OST) and a Tray Spray Tower (TST), and the results showed that DST is superior in tower resistance, with a decrease of approximately 39.7%.
44 citations
TL;DR: In this article, the authors examined the key factors in the performance of the two types of reaction and the role of kinetics and mass transfer in the process, as well as the safety of the process.
Abstract: Ethoxylation and/or propoxylation are performed in industry to produce surfactants and polyglycols. The reaction is normally promoted by an alkaline catalyst (such as NaOH or KOH) and is performed in gas−liquid stirred reactors, Venturi loop reactors, and spray tower loop reactors. In the first two types of reactors, the gas phase is dispersed into the liquid phase; on the contrary, in the latter case, the liquid phase is dispersed into the gaseous one. In this paper, the key factors in ethoxylation/propoxylation technology will be examined: (i) the types of reactors employed and their performances; (ii) the role of kinetics and mass transfer in the process; and (iii) safety.
42 citations
TL;DR: Developing simple realistic models in order to describe the gaseous removal process of SO(2) by absorption with and without chemical reaction in spray towers and shows that best performance can be achieved in the droplet inertia-controlling regime.
42 citations
TL;DR: In this article, the mass transfer parameters and H 2 S removal efficiency in a laboratory-made spray tower designed for deodorization were analyzed and the results demonstrated that as soon as the chlorination rate reached 0.5 g Cl 2 ǫ 2 L −1, more than 99% of the hydrogen sulphide was removed.
Abstract: The aim of this study was to characterise the mass transfer parameters and H 2 S removal efficiency in a laboratory-made spray tower designed for deodorisation. In order to study mass transfer, the volumic interfacial area ( a ) and the volumic mass transfer coefficient ( k L a ) were estimated. The influences of both superficial liquid and gas velocities were quantified ( U L from 4.1 × 10 −5 to 4.6 × 10 −4 m s −1 , U G from 9.4 × 10 −3 to 2.8 × 10 −2 m s −1 ). It could be shown that the superficial liquid velocity has a slight influence on the mass transfer parameters whereas the variation of the superficial gas velocity influences them much more. Then H 2 S removal efficiency was studied at pH 10 in the presence or not of an oxidant, sodium hypochlorite. The results demonstrated that as soon as the chlorination rate reached 0.5 g Cl 2 L −1 , more than 99% of the hydrogen sulphide is removed.
41 citations
TL;DR: In this paper, a mathematical model for describing the behavior of spray tower loop reactors is developed, characterised by the fact that mass transfer and reaction occurs independently in two distinct zones of the reactor.
40 citations