Gas separation: processes – Sound waves used
Reexamination Certificate
2005-03-29
2005-03-29
Chiesa, Richard L. (Department: 1724)
Gas separation: processes
Sound waves used
C095S071000, C095S078000, C096S053000, C096S062000, C096S077000, C096S087000, C096S096000, C096S097000, C096S389000
Reexamination Certificate
active
06872238
ABSTRACT:
Fine particles of dust and other pollutants in gas streams are agglomerated to form larger particles which are more easily filtered in downstream processing. In one embodiment, particles in successive portions of the gas stream are charged with opposite polarity, and the gas stream is introduced into an Evasé portion (12) to slow it down. Particles of different sizes have differential deceleration and therefore mix generally in the direction of flow, leading to agglomeration of oppositely-charged particles. In another embodiment, a gas stream is divided into substreams in respective parallel passages, and the particles in adjacent passages are charged to opposite polarity. Deflectors at the downstream end of the passages cause substreams of particles of opposite polarity to mix, with resultant agglomeration of oppositely charged particles.
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Chiesa Richard L.
Indigo Technologies Group Pty Ltd.
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