Effect of upflow and downflow baffle configuration on particulate matter removal in a mirror-symmetrical multi-compartment scrubber

Abstract

Control over particulate matter (PM) emission from grilling is required for improving public health and air quality. The performance of mirror-symmetrical multi-compartment scrubbers with an upflow (U-type) and downflow baffle (D-type) configuration was evaluated for PM emission control from grilling at a flow rate of 30 m³ min⁻¹. The PM removal efficiency of the U-type scrubber was the highest when the water level was 8 cm (95.6%), and the pressure drops recorded at the water levels of 6, 8 and 10 cm were 103, 122 and 153 mmH₂O, respectively. Although PM removal efficiency of the D-type scrubber was over 91.0% at the water levels of 8, 10 and 12 cm, the pressure drops were 124, 142 and 185 mmH₂O, respectively. A comprehensive evaluation of the water volume, pressure drop and PM removal performance, as well as device size, revealed that the U-type scrubber with a PM removal efficiency of 92% or higher and a pressure drop of 122 mmH₂O or lower at the water levels of 6–8 cm was more economical for removing PM from grilling gas than the D-type scrubber.

Keywords:

• Particulate matter
• meat grilling restaurant
• multi-compartment scrubber
• baffle configuration
• pressure drop

Additional information

Funding

This research was supported by the Technology Development Program to Solve Climate Change at the National Research Foundation (NRF) funded by the Ministry of Science and ICT (2017M1A2A2086515).