Deaeration tank

Details Deaeration tank Deaeration tank

1997-08-25

1999-07-06

Smith, Duane S.

Gas separation: apparatus

Degasifying means for liquid

With gas contacting means

96204, 96220, B01D 1900

Patent

active

059192895

ABSTRACT:
There is disclosed a deaeration tank which can sufficiently deaerate object water, is decreased in size, and has high treatment capability. The deaeration tank includes a tank body which defines a deaeration chamber and receives object water, an air injection device disposed within the deaeration chamber for injecting air, a discharge passage for discharging object water from the deaeration chamber, and a bubble-scavenging member disposed in the discharge passage for scavenging fine bubbles contained in the object water which passes through the discharge passage. When object water is fed into the deaeration chamber, and air is injected into the deaeration chamber, thus-injected air ascends in the object water in the form of coarse bubbles and is then released from the surface of the object water. During this ascent of coarse bubbles within the deaeration chamber, through contact with the object water, coarse bubbles attract fine bubbles contained in the object water, so that the object water is deaerated. While thus-deaerated object water is passing through the discharge passage, fine bubbles, which move due to a turbulent flow of the object water or in accordance with Brownian movement, are scavenged by the bubble-scavenging member.

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