Pressure loss and droplet entrainment under spray absorber conditions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F25%3APU151972" target="_blank" >RIV/00216305:26210/25:PU151972 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1383586624030788" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1383586624030788</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.seppur.2024.129339" target="_blank" >10.1016/j.seppur.2024.129339</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Pressure loss and droplet entrainment under spray absorber conditions

Popis výsledku v původním jazyce

The interaction of spray with counter-flowing flue gas causes pressure loss (Delta P) and influences droplet entrainment and sorbent loss in gas-liquid scrubbers. As these phenomena were usually investigated separately and not linked with atomizer characteristics, it is difficult to obtain insight into the scrubber operation and select an atomization device proper to particular process. Atomizers typically used in a spray column, together with pressure-swirl and twin fluid effervescent types, were tested in column-like conditions. All the atomizers were tested at the same liquid flow rate of 140 kg/h, with inlet pressure (p(in)) from 0.025 to 0.2 MPa under the counter-flow velocity (u(cf)) ranging from 0 to 1 m/s. A small-scale low-speed wind tunnel was specially designed to simulate spray column flow conditions. The Delta P and droplet entrainment were correlated with atomizer operating regimes. Empirical and analytical models of Delta P were compared with experimental results for different atomizers. Limitations of both models are discussed. The Delta P is influenced by the spray velocity at the discharge orifice (u(L)) and correlates well with the liquid kinetic energy (E-k) and Reynolds number at the discharge orifice. The atomizers working on higher p(in), provide a larger interfacial area, but yield higher E-k at the discharge orifice, causing larger Delta P and a greater risk of sorbent loss due to presence of smaller droplets.

Název v anglickém jazyce

Pressure loss and droplet entrainment under spray absorber conditions

Popis výsledku anglicky

The interaction of spray with counter-flowing flue gas causes pressure loss (Delta P) and influences droplet entrainment and sorbent loss in gas-liquid scrubbers. As these phenomena were usually investigated separately and not linked with atomizer characteristics, it is difficult to obtain insight into the scrubber operation and select an atomization device proper to particular process. Atomizers typically used in a spray column, together with pressure-swirl and twin fluid effervescent types, were tested in column-like conditions. All the atomizers were tested at the same liquid flow rate of 140 kg/h, with inlet pressure (p(in)) from 0.025 to 0.2 MPa under the counter-flow velocity (u(cf)) ranging from 0 to 1 m/s. A small-scale low-speed wind tunnel was specially designed to simulate spray column flow conditions. The Delta P and droplet entrainment were correlated with atomizer operating regimes. Empirical and analytical models of Delta P were compared with experimental results for different atomizers. Limitations of both models are discussed. The Delta P is influenced by the spray velocity at the discharge orifice (u(L)) and correlates well with the liquid kinetic energy (E-k) and Reynolds number at the discharge orifice. The atomizers working on higher p(in), provide a larger interfacial area, but yield higher E-k at the discharge orifice, causing larger Delta P and a greater risk of sorbent loss due to presence of smaller droplets.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20400 - Chemical engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

SEPARATION AND PURIFICATION TECHNOLOGY

ISSN

1383-5866

e-ISSN

1873-3794

Svazek periodika

354

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

„“-„“

Kód UT WoS článku

001310467000001

EID výsledku v databázi Scopus

2-s2.0-85202849978