Air Pollution Control from Rice Shellers - A Case Study
A Rice Sheller is used for obtaining polished white
rice from paddy. There are about 3000 Rice Shellers in Punjab and
50000 in India. During the process of shelling lot of dust is emitted
from different unit operations like paddy silo, paddy shaker, bucket
elevators, huskers, paddy separator etc. These dust emissions have
adverse effect on the health of the workers and the wear and tear of
the shelling machinery is fast. All the dust emissions spewing out of
these unit operations of a rice Sheller were contained by providing
suitable hoods and enclosures while ensuring their workability. These
were sucked by providing an induced draft fan followed by a high
efficiency cyclone separator that has got an overall dust collection
efficiency of more than 90%. This cyclone separator replaced two
cyclone separators and a filter bag house, which the Rice Sheller was
already having. The dust concentration in the stack after the
installation of cyclone separator is well within the stipulated
standards. Besides controlling pollution, there is improvement in the
quality of products like bran and the life of shelling machinery has
enhanced. The payback period of this technology is less than four
shelling months.
[1] P. Pillayer, “ Rice Post Production manual, Wiley Eastern Limited ,1984
[2] S. M. Ahuja, Powder Technology, 204, 48-53 (2010)
[3] M. E. Fayed, L. Otten, “Handbook of Powder Science and Technology”,
Van Nostrand Reinhold Company, New York, 1984
[4] R. Jackson , Mechanical Equipment for Removing Grit and Dust from
Gases , Cheney and Sons ,Banbury, England (1963)
[5] R. H. Perry and C. H. Chilton, Chemical Engineer’s Handbook, 6th
edition, 1984.
[1] P. Pillayer, “ Rice Post Production manual, Wiley Eastern Limited ,1984
[2] S. M. Ahuja, Powder Technology, 204, 48-53 (2010)
[3] M. E. Fayed, L. Otten, “Handbook of Powder Science and Technology”,
Van Nostrand Reinhold Company, New York, 1984
[4] R. Jackson , Mechanical Equipment for Removing Grit and Dust from
Gases , Cheney and Sons ,Banbury, England (1963)
[5] R. H. Perry and C. H. Chilton, Chemical Engineer’s Handbook, 6th
edition, 1984.
@article{"International Journal of Chemical, Materials and Biomolecular Sciences:70601", author = "S. M. Ahuja", title = "Air Pollution Control from Rice Shellers - A Case Study", abstract = "A Rice Sheller is used for obtaining polished white
rice from paddy. There are about 3000 Rice Shellers in Punjab and
50000 in India. During the process of shelling lot of dust is emitted
from different unit operations like paddy silo, paddy shaker, bucket
elevators, huskers, paddy separator etc. These dust emissions have
adverse effect on the health of the workers and the wear and tear of
the shelling machinery is fast. All the dust emissions spewing out of
these unit operations of a rice Sheller were contained by providing
suitable hoods and enclosures while ensuring their workability. These
were sucked by providing an induced draft fan followed by a high
efficiency cyclone separator that has got an overall dust collection
efficiency of more than 90%. This cyclone separator replaced two
cyclone separators and a filter bag house, which the Rice Sheller was
already having. The dust concentration in the stack after the
installation of cyclone separator is well within the stipulated
standards. Besides controlling pollution, there is improvement in the
quality of products like bran and the life of shelling machinery has
enhanced. The payback period of this technology is less than four
shelling months.", keywords = "Air Pollution, Cyclone Separator, Pneumatic
Conveying, Rice Sheller.", volume = "9", number = "6", pages = "743-4", }