Abstract A gas cleaning apparatus is described having a common container for a liquid take-up zone and a sedimentation zone. The container is normally closed except for first and second casings which extend downwardly from the top of the container and have open lower ends. The first casing has a top open to the atmosphere and the second casing is an inlet chamber having its top portion connected to a conduit for gas to be cleaned. A vacuum maintained in the container causes liquid levels in the casings to be below a liquid level in the container. A vertically extending gas treatment passage has a lower end terminating above the liquid level of the liquid take-up zone in the second casing and the other end connected to a liquid droplet separator in turn connected to a suction fan to draw a mixture of liquid droplets and gas to be cleaned upwardly through the treatment passage into the droplet separator. The upper end of this passage is connected to the top of the container to maintain the vacuum in the container. Liquid separated in the droplet separator is returned by a conduit into the lower end of the second casing at a position spaced above the sedimentation zone so that any solids can settle as sludge in the container. Rotating scrapers driven by a shaft extending downwardly through the first casing move settled sludge toward a discharge valve at the lower end of the conical bottom. The valve is operated in response to the load on the motor to open the valve to discharge sludge. A level detector in the container controls the introduction of make-up liquid.
Inventors
👤 K Gustavsson
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-29 23:12
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/02; B01D47/021
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
254 words
A gas cleaning apparatus comprising: a liquid take-up means for directing a gas stream towards a liquid surface in a liquid take-up zone and causing said gas to absorb liquid in the form of droplets, a treatment passage which extends from the liquid takeup zone and through which the gas with liquid droplets flows away from the liquid take-up zone, a liquid droplet separator connected to the treatment passage and from which the liquid separated from the gas in the droplet separator is returned to the system, and a sedimentation means for settling solid material removed from said gas in a sedimentation liquid zone which communicates with the liquid take-up zone, said sedimentation means and the liquid take-up means being enclosed in a common container, said liquid take-up zone being separated from the sedimentation zone by a downwardly open casing containing said take-up zone, a gas inlet connected to said casing through which said gas is directed at said liquid surface, a gas outlet provided for said casing by a portion of the treatment passage extending into the casing through its top end to an intermediate position below said gas inlet and above said liquid surface, said gas inlet and said gas outlet passing through the same opening in said common container containing the sedimentation zone, and a liquid conduit extending from the droplet separator and having it output end opening out into the container at a position within the said casing below said liquid surface and which is spaced from the sedimentation zone.
Claim 2
Dependent Claim
254 words
A gas cleaning apparatus comprising: a liquid take-up means for directing a gas stream towards a liquid surface in a liquid take-up zone and causing said gas to absorb liquid in the form of droplets, a treatment passage which extends from the liquid takeup zone and through which the gas with liquid droplets flows away from the liquid take-up zone, a liquid droplet separator connected to the treatment passage and from which the liquid separated from the gas in the droplet separator is returned to the system, and a sedimentation means for settling solid material removed from said gas in a sedimentation liquid zone which communicates with the liquid take-up zone, said sedimentation means and the liquid take-up means being enclosed in a common container, said liquid take-up zone being separated from the sedimentation zone by a downwardly open casing containing said take-up zone, a gas inlet connected to said casing through which said gas is directed at said liquid surface, a gas outlet provided for said casing by a portion of the treatment passage extending into the casing through its top end to an intermediate position below said gas inlet and above said liquid surface, said gas inlet and said gas outlet passing through the same opening in said common container containing the sedimentation zone, and a liquid conduit extending from the droplet separator and having it output end opening out into the container at a position within the said casing below said liquid surface and which is spaced from the sedimentation zone.
Claim 3
Dependent Claim
70 words
An apparatus according to claim 1, in which there is arranged in the sedimentation zone of the container a conveying means for conveying the sediment to a discharge means which is arranged to be opened automatically by a control means in response to an increase in resistance to movement of said conveying means above a predetermined value whereby the deposited sLudge is discharged from the container with a thicker consistency.
Claim 4
Dependent Claim
27 words
An apparatus in accordance with claim 1 which also includes a gas absorbing liquid provided in the sedimentation zone to absorb gaseous pollutants in said gas stream.