Publication detail

Wet flue gas desulphurization using a new O-element design

JECHA, D. LEŠTINSKÝ, P. BRUMMER, V. STEHLÍK, P.

Original Title

Wet flue gas desulphurization using a new O-element design

Type

journal article in Web of Science

Language

English

Original Abstract

crubbing by liquid sprayingis one of the most effective processes used for removal of fine particles and soluble gas pollutants (such as SO2, HCl, HF) from the flue gas. The primary function of venturi scrubber, which represents the first stage of the wet flue gas cleaning processes, such as in waste incineration plants, is to capture fine particles as well as remove HCl, HF or SO2 as a result of the decrease in the flue gas temperature before entering the absorption column. In this paper, a newly developed four-branch O-element is proposed as a replacement for venturi scrubber. By means of this device, sulphur dioxide (SO2) removal efficiency and pressure loss and temperature drop were experimentally calculated. The dependence of these variables on liquid–gas ratio was monitored. The simulated flue gas was prepared by the combustion of the carbon disulphide solution in toluene (1:1 vol.) in the presence of the flame in the reactor. Such prepared flue gas with temperature around 150 °C was processed in the laboratory-designed O-element scrubber. Water was used as an absorbent liquid. The maximal efficiency of SO2 removal achieved by this process was up to 70 %, which is far better in comparison with the commonly used venturi scrubbers. The pressure drop of our proposed newly designed wet scrubber is similar to that of the commonly used venturi scrubbers; nevertheless, the influence of the amount of the liquid on pressure drop is not so significant. In parallel, a mathematical model describing the mass transfer, enthalpy balance and pH change of the absorbing solution was also developed. Enthalpy balance was calculated by numerical iteration to determine the unknown outlet liquid temperature. Mass transfer calculation was used for the determination of complete Henry constant from all the subsequent SO2 absorption reactions.

Keywords

Desulphurization, Absorption, Heat exchange, Flue gas, Model Wet scrubber, Wet cleaning, SO2

Authors

JECHA, D.; LEŠTINSKÝ, P.; BRUMMER, V.; STEHLÍK, P.

Released

1. 3. 2017

Publisher

Springer Berlin Heidelberg

Location

Berlin

ISBN

1618-954X

Periodical

Clean Technologies and Environmental Policy

Year of study

19

Number

2017

State

United States of America

Pages from

417

Pages to

426

Pages count

10

URL

https://link.springer.com/article/10.1007/s10098-016-1227-7

BibTex

@article{BUT126709,
  author="David {Jecha} and Pavel {Leštinský} and Vladimír {Brummer} and Petr {Stehlík}",
  title="Wet flue gas desulphurization using a new O-element design",
  journal="Clean Technologies and Environmental Policy",
  year="2017",
  volume="19",
  number="2017",
  pages="417--426",
  doi="10.1007/s10098-016-1227-7",
  issn="1618-954X",
  url="https://link.springer.com/article/10.1007/s10098-016-1227-7"
}