PERFORMANCE OF A CYCLONE ADAPTED WITH WATER SPRAYERS

• DOI: 10.22533/at.ed.4751906115

• Palavras-chave: Palavras Chaves

• Keywords: bagasse, cogeneration, collection, efficiency, particulate material.

• Abstract:

  Sugarcane bagasse is a

  lignocellulosic material used as fuel for energy

  cogeneration to supply the thermal and electric

  energy requirements of sugar mills. The

  combustion of this biomass releases pollutants

  including particulate material, which can have

  adverse effects in the environment and towards

  human health. One way to remove this type of

  pollutant from combustion emissions is to use

  modified cyclones fitted with water sprayers.

  The objective of this study was to achieve

  maximum efficiency of particle collection from

  waste gas streams in the sugar and alcohol

  industry. The variables gas velocity, mass flow,

  temperature, and collection time were optimized,

  and evaluation was made of the effect of water

  addition within the cyclone. In the absence of

  water, the highest collection efficiency achieved

  after optimization was 82%. The addition of water,

  using a liquid/gas ratio of 2.5 L.m-3, resulted in

  increase of the collection efficiency from 82 to

  97%, representing a 14% improvement. For

  particles with aerodynamic diameters of 10 and

  2.5 μm, the collection efficiencies increased from

  65 to 87% and from 20 to 46%, respectively. It

  could be concluded that optimization and the

  spraying of water within the cyclone resulted in

  improved treatment of the effluent gas, and that

  the technique represents an excellent option for

  use in the sugar and alcohol industry.

• Número de páginas: 15