Experimental results on the performance of a laboratory scale rectangular Venturi scrubber in the removal of fine mineral particles from a confined air stream are presented, and a new correlation is proposed and evaluated. The scrubber was operated with air velocities in the throat varying from 58 m/s to 75 m/s and liquid flow rates varying from 280 ml/min to 900 ml/min. Liquid was injected as a jet emerging from a 1.0 mm orifice at the throat. Results for dust collection grade efficiency varied from 87% to 98% for particles from 0.1 m to 2.0 m.
The Venturi scrubber is used for removing particulate matter from gaseous
effluents and finds a large application in industry. The size of the droplet is of fundamental
importance to the performance of the equipment. This work aims at studying the effect of
some design parameters, namely liquid flow rate and liquid injection system in the droplet
size and to correlate this with collection efficiency. A laser diffraction technique was used in
order to measure droplet size in situ in a rectangular Venturi scrubber, with liquid injected
through 1mm diameter orifices on the throat walls. Liquid flow rates of 600 and 900 ml/min
and number of orifices varying from 1 to 5 were used in the experiments. The throat gas
velocity was kept at 69.3 m/s. It was found that all these variables significantly affected
droplet size. The results of droplet size were compared with the particle capture (collection)
efficiency measured in the same experimental conditions. It was observed that the collection
efficiency was affected by the liquid atomizing conditions and by the droplet distribution in
the Venturi throat.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.