Venturi scrubber
OwnerErnest L. Kolminventor
Life of this patent
Estimating the term…
Abstract
An improved venturi scrubber for removing particulate matter from a gas stream. The scrubber includes ports located either at the throat at the venturi or in the divergent section for injecting gas or air into the stream being processed through the scrubber. The ports may be either a series of openings or a continuous annular opening and are connected by ducting either to the convergent section of the scrubber to receive a portion of the incoming gas stream or to a separate source of gas or air.
Claims17
In a venturi scrubber having a first region for receiving a primary stream of gas, a second region extending from the downstream end of the first region and converging in the downstream direction, a third region of reduced diameter extending in a smooth inner surface configuration at the downstream end of the second region and forming the venturi throat, and a fourth region extending in a smooth inner surface configuration from the downstream end of the third region and diverging in the downstream direction, means to inject liquid in droplet form into the primary stream of gas, the improvement which comprises:
- at least one first duct opening into the scrubber at a point located within a first zone encompassing the downstream portion of the third region and the upstream portion of the fourth region;
- and
- means for directing a secondary stream of gas through the first duct into the first zone of the scrubber whereby the gas enters the first zone at an acute angle to the primary stream of gas so as to cause a substantial increase in turbulence within the primary stream of gas and a resultant increase in the surface area of the liquid droplets in said stream.
A venturi scrubber, comprising:
- first wall means defining an inlet region;
- second wall means extending from the downstream end of the first wall means and converging in the downstream direction;
- third wall means extending in a smooth inner path configuration from the downstream end of the second wall means and defining the throat of the venturi;
- fourth wall means extending from the downstream end of the third wall means and diverging in the downstream direction;
- at least one duct opening into the venturi at a point within a zone extending between the downstream portion of the throat and the upstream portion of the fourth wall means to inject a secondary stream of gas into the primary gas stream through the scrubber, the secondary stream being injected at an acute angle to the primary gas stream;
- said duct extending from the opening within the zone to a second opening in the second wall means wherein the openings at each end of the duct are annular openings extending substantially the full circumference of the scrubber and the duct surrounds the wall means between the two openings;
- and
- nozzle means for injecting a liquid into the stream of gas passing through the venturi throat.
Dependencies are inferred from the claim text.