Agitating – Having specified feed means – Liquid injector within mixing chamber
Reexamination Certificate
1998-11-12
2001-07-10
Soohoo, Tony G. (Department: 1723)
Agitating
Having specified feed means
Liquid injector within mixing chamber
C366S175200, C366S336000
Reexamination Certificate
active
06257754
ABSTRACT:
The present invention relates to the mixing of fluid and in particular to a mixing device with a deflection body for the mixing of two fluid streams.
It has now been found that when deflecting a gas-stream of different gases the gases are mixed thoroughly, in particular radial diffusers provide evenly mixing of gas streams as described in DK Patent No. 169,823 and PCT/DK/9500200.
Accordingly, this invention provides a mixing device for mixing of a first and second gas stream comprising within a housing at least one deflection body causing the gas streams to be radially deflected within the housing; and
a nozzle device for introduction of the second gas stream, arranged rotational symmetric to axis of the housing.
The mixing device according to the invention is in particular useful when installed in flue or waste gas channels provided with a catalytic compartment for the treatment of off-gases, wherein a reactant gas or a spray of reactive particles in liquid or solid phase is admixed with the off-gas for the catalytic treatment of the gas. In those applications the combined silencing and mixing effect of the mixing device advantageously reduces the overall dimensions of the channels and pressure drop of the gas, when compared to channels with separate silencing and mixing equipment. Accordingly, the invention further provides an off-gas channel comprising one or more catalyst beds for the catalytic treatment of off-gas in presence of a reactant gas, wherein the off-gas channel further comprises a mixing device of the above described type for the silencing and mixing of the off-gas and the reactant gas prior to introduction into the catalyst bed.
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Haldor Topsoe A/S
Ostrolenk Faber Gerb & Soffen, LLP
Soohoo Tony G.
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