Removal of SO2 and NO from flue gas by wet scrubbing using an aqueous NaClO2 solution

Chien, Tsung Wen; Chu, Hsin

doi:10.1016/s0304-3894(00)00274-0

Cited by 168 publications

(97 citation statements)

References 12 publications

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“…Figure 8 shows the variation in removal efficiency of HCl gas using the wet scrubber plotted against the liquid-to-gas ratio for the different sizes of packing balls while keeping the face velocity and pH constant at 2 m/sec and 11, respectively. The removal efficiency showed a linear increase regardless of the size of the packing balls because the higher liquid-to-gas ratio means an increase in the gasliquid contacting surface area (Chein and Chu, 2000). The removal efficiency with the 3.5-inch balls was increased from 82.8% to 97.5% when the size of the packing balls was decreased to 1 inch and the liquid-to-gas ratio was increased to 3 L/m 3 .…”

Section: Removal Efficiency Of An Acidic Gas By the Scrubbermentioning

confidence: 93%

Integration of a nonmetallic electrostatic precipitator and a wet scrubber for improved removal of particles and corrosive gas cleaning in semiconductor manufacturing industries

Kim

Han

Yoa

et al. 2012

Journal of the Air & Waste Management Association

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Section: Removal Efficiency Of An Acidic Gas By the Scrubbermentioning

confidence: 93%

Integration of a nonmetallic electrostatic precipitator and a wet scrubber for improved removal of particles and corrosive gas cleaning in semiconductor manufacturing industries

Kim

Han

Yoa

et al. 2012

Journal of the Air & Waste Management Association

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“…In this study, a porous bubbler was used for the absorption of NO 2 in the solution. However, some researchers have suggested using scrubber or packed column for simulation and determination of maximum absorption (28)(29)(30). The initial amount of absorption was high, because the measuring time started 7 minutes after the start of the system.…”

Section: Effect Of Initial Concentration and Sodium Hydroxide Solutiomentioning

confidence: 99%

Investigation of Photocatalytic Oxidation and Wet Absorption in a Combined System for Removal of Nitrogen Oxides

2016

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Background: One of the important achievements of the past decade was the rapid growth of industries and accordingly production of various chemical compounds.Objectives: This study presents a combined system of photocatalytic oxidation and absorption solution to remove nitrogen oxides from polluted air flow. Materials and Methods:The experimental system used in this study comprised a pollutant gas source, mixing chamber, photocatalytic oxidation reactor, wet absorption system, and finally a system for measuring nitrogen oxides. Firstly, by using photocatalytic property, nitrogen oxide was converted to nitrogen dioxide. Then, absorption system was used to absorb nitrogen dioxide into the sodium hydroxide solution. Results: Experimental results have shown that output of nitrogen oxide removal in the initial concentration of 200 ppm was 44% in the beginning of the process and then fixed at 15% during the rest of the process. Also, by changing the amount of zinc oxide nanoparticles from 4 to 8 mg/cm 2 , no considerable change was observed in the conversion rate of nitrogen oxide. In addition, while

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“…Many researchers have attempted to determine the critical mechanisms involved in particulate matter scrubbing and gas absorption by wet scrubbers (Miconnet et al, 1981;Haase and Koehne, 1999;Kashdan et al, 1982;Chien, and Chu, 2000). Jung and Lee (1998) were the first researchers to carry out an analytical study on the collection of small particles by a system consisting of multiple fluid spheres, such as water droplets or gas bubbles.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the performance of a turbulent wet scrubber for scrubbing particulate matter

Lee

Mohan

Byeon

et al. 2012

Journal of the Air & Waste Management Association

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A turbulent wet scrubber was designed and developed to scrub particulate matter (PM) at micrometer and submicrometer levels from the effluent gas stream of an industrial coal furnace. Experiments were conducted to estimate the particle removal efficiency of the turbulent scrubber with different gas flow rates and liquid heads above the nozzle. Particles larger than 1 µm were removed very efficiently, at nearly 100%, depending upon the flow rate, the concentration of the dust-laden air stream, and the water level in the reservoir. Particles smaller than 1 µm were also removed to a greater extent at higher gas flow rates and for greater liquid heads. Pressure-drop studies were also carried out to estimate the energy consumed by the scrubber for the entire range of particle sizes distributed in the carrier gas. A maximum pressure drop of 217 mm H 2 O was observed for a liquid head of 36 cm and a gas flow rate of 7 m 3 /min. The number of transfer units (NTU) analysis for the efficiencies achieved by the turbulent scrubber over the range of particles also reveals that the contacting power achieved by the scrubber is better except for smaller particles. The turbulent scrubber is more competent for scrubbing particulate matter, in particular PM 2.5 , than other higher energy or conventional scrubbers, and is comparable to other wet scrubbers of its kind for the amount of energy spent.Implications: The evaluation of the turbulent scrubber is done to add a novel scrubber in the list of wet scrubbers for industrial applications, yet simple in design, easy to operate, with better compactness, and with high efficiencies at lower energy consumption. Hence the turbulent scrubber can be used to combat particulate from industrial gaseous effluents and also has a scope to absorb gaseous pollutants if the gases are soluble in the medium used for particles capture.

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Removal of SO2 and NO from flue gas by wet scrubbing using an aqueous NaClO2 solution

Cited by 168 publications

References 12 publications

Integration of a nonmetallic electrostatic precipitator and a wet scrubber for improved removal of particles and corrosive gas cleaning in semiconductor manufacturing industries

Integration of a nonmetallic electrostatic precipitator and a wet scrubber for improved removal of particles and corrosive gas cleaning in semiconductor manufacturing industries

Investigation of Photocatalytic Oxidation and Wet Absorption in a Combined System for Removal of Nitrogen Oxides

Evaluating the performance of a turbulent wet scrubber for scrubbing particulate matter

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