TY - GEN
T1 - Aerodynamic deduster technologies for removing dust and ammonia in air streams
AU - Zhang, Y.
AU - Tan, Z.
AU - Wang, X.
PY - 2005
Y1 - 2005
N2 - Particulate matter and gaseous pollutants produced in animal buildings have an adverse effect on health and comfort of workers and animals, and are also cause of concern to the people living close to animal buildings when emitted to the ambient environment. This paper summarized recent developments on aerodynamic air cleaning technology for particulate matter and gas emission control. Reverse flow cyclones are centrifugal separators that are widely used for industrial particulate matter removal. Typical pressure drops of these cyclones for air cleaning are 500 Pa or higher, and were believed to be only able to separate particles larger than 10 μm. An aerodynamic deduster that was able to separate particles as small as 3 μm at a pressure drop of 100 Pa was developed by the author's group. Unlike the existing cyclone technology, the deduster used a low pressure and low turbulent approach to substantially minimize the particle reentrainment and enhance the particle separation efficiency. By combining a fine mist scrubbing section, where gas absorption and particle coagulation took place, the deduster reduced ammonia emission by as much as 84% at low liquid/gas flow ratio. The airflow rate capacity of different deduster designs were between 135 to 12,000 L/s. Both laboratory and field evaluations showed that the deduster can be effectively used in reducing particulate matter emission from stationary sources.
AB - Particulate matter and gaseous pollutants produced in animal buildings have an adverse effect on health and comfort of workers and animals, and are also cause of concern to the people living close to animal buildings when emitted to the ambient environment. This paper summarized recent developments on aerodynamic air cleaning technology for particulate matter and gas emission control. Reverse flow cyclones are centrifugal separators that are widely used for industrial particulate matter removal. Typical pressure drops of these cyclones for air cleaning are 500 Pa or higher, and were believed to be only able to separate particles larger than 10 μm. An aerodynamic deduster that was able to separate particles as small as 3 μm at a pressure drop of 100 Pa was developed by the author's group. Unlike the existing cyclone technology, the deduster used a low pressure and low turbulent approach to substantially minimize the particle reentrainment and enhance the particle separation efficiency. By combining a fine mist scrubbing section, where gas absorption and particle coagulation took place, the deduster reduced ammonia emission by as much as 84% at low liquid/gas flow ratio. The airflow rate capacity of different deduster designs were between 135 to 12,000 L/s. Both laboratory and field evaluations showed that the deduster can be effectively used in reducing particulate matter emission from stationary sources.
KW - Aerodynamic deduster
KW - Air quality
KW - Dust and ammonia control
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M3 - Conference contribution
AN - SCOPUS:33645036415
SN - 1892769484
SN - 9781892769480
T3 - Livestock Environment VII - Proceedings of the Seventh International Symposium
SP - 230
EP - 238
BT - Livestock Environment VII - Proceedings of the Seventh International Symposium
PB - American Society of Agricultural and Biological Engineers
T2 - Livestock Environment VII - 7th International Symposium
Y2 - 20 October 2004 through 22 October 2004
ER -