US 4,308,040 AGranted

Apparatus for neutralizing odors

AssigneeQuad Environmental Technologies Corp.

InventorsHarold J. Rafson, Egbert deVries

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Abstract

Apparatus, particularly adapted to the removal of odorous constituents from waste gas streams, is described. The apparatus comprises a treatment vessel or chamber preferably of cylindrical shape containing a coaxially-mounted exhaust duct which serves also as a columnar support for the chamber top or roof. An odorous gas is introduced tangentially into an upper portion of the reactor and is caused to move in a spiral flow around the central column and to exahust through an exit port into the central duct adjacent the chamber floor. An arcuate, spiral baffle is mounted on the chamber floor and extends continuously from the inner vessel wall to the central duct thereby directing gas flow into the exit port to reduce pressure drop through the treatment chamber. A finely divided spray of a reagent reactive toward the odorous compound is introduced into the chamber through nozzles ringing the chamber wall or mounted in the chamber roof. Reagent droplets coalesce on the chamber floor and are removed from the vessel.

Claims12

Dependent claims

Gas treatment apparatus including a closed cylindrical vessel;

gas entry means disposed in an upper portion of said vessel, said entry means arranged to cause gas to tangentially enter the vessel;
a columnar duct with an unobstructed interior area disposed coaxilly within said vessel and extending continuously from the vessel floor to the vessel roof, said duct fixedly attached to both said floor and said roof to form a structural support for said vessel and to define an annular area between said duct and the vessel wall;
baffle means mounted in a substantially vertical attitude on the floor of said vessel and extending in a continuous arcuate spiral from the inner vessel wall to said duct;
gas exit means communicating between said annular area and the interior of said duct by means of said baffle means, said gas exit means disposed in a lower portion of said duct and said annular area providing an unobstructed passage for gas flow from said gas entry to said baffle means;
and adjacent the floor of said vessel;
a plurality of nozzles disposed in an upper portion of said vessel, said nozzles adapted to inject a very finely divided liquid spray having a median droplet diameter less than about 10 microns into only said annular area formed by the vessel wall and the columnar duct, and
liquid exit means communicating between the floor of said annular area and the exterior of said vessel.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/236,540Filed 20 Feb 1981 · continuation in part
Priority: 27 Oct 1978
Granted: 29 Dec 1981
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

B01D 53/18
By absorption: absorbing units; Liquid distributors therefor
B01D 53/34
Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g.…:…
Y10S 261/17
Gas and liquid contact apparatus: odorizers
B01D
Separation