Mechanisms and strategies for ash deposition reduction in flue gas heat exchanger

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F21%3APU141066" target="_blank" >RIV/00216305:26210/21:PU141066 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007%2Fs10098-021-02083-2" target="_blank" >https://link.springer.com/article/10.1007%2Fs10098-021-02083-2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10098-021-02083-2" target="_blank" >10.1007/s10098-021-02083-2</a>

Result language

angličtina

Original language name

Mechanisms and strategies for ash deposition reduction in flue gas heat exchanger

Original language description

Abstract: Ash deposition in flue gas heat exchanger affects its heat transfer performance and lifecycle, which becomes a crucial factor restricting the efficient recovery and utilization of flue gas waste heat. In this paper, a numerical method was established to investigate the characteristics of ash deposition in tube bundle heat exchangers. An integrated fouling model including transport, rebound, deposition, and removal of particles was employed to predict the behaviour of particles. Then, the effects of particle diameter and flue gas velocity on collision mass, deposition mass, absolute deposition ratio, and relative deposition ratio were studied. At last, the thermal–hydraulic and ash deposition characteristics of three different tube shapes were compared. The results showed that the low-velocity regions on the circumference were the primary locations of particle deposition, and the medium-diameter particles were the main deposition components. With the increase in flue gas velocity, the deposition mass of large-diameter particles decreased, and that of small-diameter particles increased. The use of an elliptical tube and flattened round tube with an apex angle of 60°had also excellent thermal–hydraulic and anti-fouling performances. Consequently, the ash deposition and wear can be reduced by increasing flue gas velocity, filtering medium and large-diameter particles, and using elliptical and flattened round tubes. Graphic abstract: [Figure not available: see fulltext.]. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20704 - Energy and fuels

Project

<a href="/en/project/LTACH19033" target="_blank" >LTACH19033: Transmission Enhancement and Energy Optimized Integration of Heat Exchangers in Petrochemical Industry Waste Heat Utilisation</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

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

Name of the periodical

Clean Technologies and Environmental Policy

ISSN

1618-954X

e-ISSN

1618-9558

Volume of the periodical

neuveden

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

1-2

UT code for WoS article

000659019900001

EID of the result in the Scopus database

2-s2.0-85107649913