Publication detail
Wet Flue Gas Desulfurization Using a New O-Element Design Which Replaces the Venturi Scrubber
LEŠTINSKÝ, P. JECHA, D. BRUMMER, V. STEHLÍK, P.
Czech title
Mokré odsíření spalin použítím nevoho apaprátu O-element nahrazující Venturiho aparát
English title
Wet Flue Gas Desulfurization Using a New O-Element Design Which Replaces the Venturi Scrubber
Type
conference paper
Language
en
Original abstract
Scrubbing by a liquid spraying is 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. There are many configurations of scrubbers designed to provide contact between the liquid and gas stream for effectively capturing particles or soluble gas pollutants, such as spray plates, packed bed towers, jet scrubbers, cyclones, vortex and venturi scrubbers. The primary function of venturi scrubber is the capture of fine particles as well as HCl, HF or SO2 removal with effect of the flue gas temperature decrease before input to the absorption column. In this paper, sulfur dioxide (SO2) from flue gas was captured using new design replacing venturi scrubber (1st degree of wet scrubbing). The flue gas was prepared by the combustion of the carbon disulfide solution in toluene (1:1 vol.) in the flame in the reactor. Such prepared flue gas with temperature around 150°C was processed in designed laboratory O-element scrubber. Water was used as absorbent liquid. The efficiency of SO2 removal, pressure drop and temperature drop were measured on our experimental device. The dependence of these variables on liquid-gas ratio was observed. The average temperature drop was in the range from 150°C to 40°C. The pressure drop was increased with increasing of a liquid-gas ratio, but no too much as for the common venturi scrubber designs. The efficiency of SO2 removal was up to 70 %. The pressure drop of our new designed wet scrubber is similar to commonly used venturi scrubbers; nevertheless the influence of amount of the liquid on pressure drop is not so significant.
Czech abstract
Morká vypírka s je jedním z nepoužívanějším a nejúčinnějším technologickým postupem používaným pro odstraňování tuhých znečišťujících látek a rozpustných plynných látek (jako je SO2, HF, HCl) ve spalinách. Existuje mnoho aparátů mokrých vypírek, které zajišťují kontakt mezi kapalinou a proudem plynu z kterého jsou účinně zachycovány tuhé částice nebo rozpustné plynné znečišťující látky, jakou jsou aparáty kde je rozstřikována kapaliny pomocí trysek, náplňové kolony, cyklony, a venturiho trubice. Venturiho trubice, která je hojně využívány, jejíž primární funkcí je zachycení jemných tuhých částic stejně tak polutantů HF, HCl, a SO2 s paralelním účinkem poklesy teploty spalin před vstupem do absorpční kolony. V tomto příspěvku jsou zveřejněny výsledky odstranění oxidu siřičitého SO2 ze spalin v novém aparátu, který může nahrazovat Venturiho trubici. (první stupeň čištění spalin). Spaliny jsou obohaceny oxidem siřičitým při spálení směsi sirouhlíku a toluenu v poměru 1:1 na hořáku zemního plynu. Spaliny s přibližnou teplotou 150 °C vstupují do nově navrženého aparátu , O-element. Absorpční kapalina byla použita voda z vodovodního řádu. Na novém aparátu byla měřena účinnost odstranění oxidu siřičitého, tlaková ztráta, změna teploty. Tyto parametry byly sledovány v závislosti na změně poměru kapalina-plyn. Rozdíl teplot na vstupu a výstupu ze zařízení byl od 150 do 40 °C Tlaková ztráta se zvětšovala se zvyšujícím se poměrem kapalina-plyn, přibližně se stejnou tendencí jako u Venturiho trubice. ˇÚčinnost odstranění SO2 byla až 70%.
English abstract
Scrubbing by a liquid spraying is 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. There are many configurations of scrubbers designed to provide contact between the liquid and gas stream for effectively capturing particles or soluble gas pollutants, such as spray plates, packed bed towers, jet scrubbers, cyclones, vortex and venturi scrubbers. The primary function of venturi scrubber is the capture of fine particles as well as HCl, HF or SO2 removal with effect of the flue gas temperature decrease before input to the absorption column. In this paper, sulfur dioxide (SO2) from flue gas was captured using new design replacing venturi scrubber (1st degree of wet scrubbing). The flue gas was prepared by the combustion of the carbon disulfide solution in toluene (1:1 vol.) in the flame in the reactor. Such prepared flue gas with temperature around 150°C was processed in designed laboratory O-element scrubber. Water was used as absorbent liquid. The efficiency of SO2 removal, pressure drop and temperature drop were measured on our experimental device. The dependence of these variables on liquid-gas ratio was observed. The average temperature drop was in the range from 150°C to 40°C. The pressure drop was increased with increasing of a liquid-gas ratio, but no too much as for the common venturi scrubber designs. The efficiency of SO2 removal was up to 70 %. The pressure drop of our new designed wet scrubber is similar to commonly used venturi scrubbers; nevertheless the influence of amount of the liquid on pressure drop is not so significant.
Keywords in English
Desulphurization, absorption, flue gas, modeling
RIV year
2015
Released
01.06.2015
Location
New York
ISSN
1307-6892
Book
International Science Index
Volume
2015
Number
17 (6) Part I
Pages from–to
130–134
Pages count
5
BIBTEX
@inproceedings{BUT114963,
author="Pavel {Leštinský} and David {Jecha} and Vladimír {Brummer} and Petr {Stehlík},
title="Wet Flue Gas Desulfurization Using a New O-Element Design Which Replaces the Venturi Scrubber",
booktitle="International Science Index",
year="2015",
volume="2015",
number="17 (6) Part I",
month="June",
pages="130--134",
address="New York",
issn="1307-6892"
}