Design of scrubbers for condensing boilers

Haase, F.; Koehne, H.

doi:10.1016/s0360-1285(99)00002-7

Cited by 15 publications

(1 citation statement)

References 11 publications

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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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