Apparatus for cleaning gases

Claim 2

Apparatus for cleaning gases comprising a vessel having peripheral walls, an inlet communicating with said vessel for introducing gases to be cleaned, an axial core member disposed in said vessel and forming with said walls an annular gas passage, and means directing a liquid spray across said annular gas passage for thereby forming a spray zone wherein entrained matter is removed from said gases, means for collecting said liquid spray, a drying means communicating with said vessel to receive gases therefrom including a plate having at least one slot therein, a centrifugal separator disposed on said slot in flow communication therewith including an outer wall on one side of the slot and an inner hollow wall defining a gas outlet, said inner wall spaced from the outer wall with the outer wall extending over the inner wall to form an arcuate path therebetween, a liquid outlet defined by an end of the outer wall remote from the inlet, a series of openings gas inlet on the inner wall remote from the inlet, said inner wall having a gas outlet opening spaced from the gas inlet openings and liquid outlet whereby gas passes through said openings and liquid passes out said outlet, and a gas outlet communicating with said drying means for removing cleaned and dried gases.

Claim 3

Apparatus as set forth in claim 1 in which said spray means includes a fixed axial spray nozzle disposed to project a spray outwardly through said gas stream.

Claim 4

Apparatus as set forth in claim 1 in which said spray means includes a series of peripherally spaced spray openings and means disposed to eject a liquid spray inwardly from said openings across the path of said gas stream.

Claim 5

Apparatus as set forth in claim 1 in which a plurality of spray nozzles are displaced axially along said gas path and are adapted to eject a liquid spray through said gas stream.

Claim 6

Apparatus as set forth in claim 1 including an axially disposed spray nozzle adapted to eject a spray outwardly through said gas stream and a set of peripherally disposed spray openings disposed to eject a spray inwardly across said gas stream.

Claim 7

Apparatus as set forth in claim 5 in which said nozzles are axially displaced.

Claim 8

Apparatus as set forth in claim 5 in which said nozzles are disposed in transverse alignment whereby the inwardly directed and outwardly directed sprays impinge to form an annular zone of concentrated liquid spray through which said gases pass.

Claim 9

Apparatus as set forth in claim 1 including at least one additional spray means disposed to eject a spray through said gas stream in advance of said first mentioned spray zone.

Claim 10

Apparatus as set forth in claim 1 including means for supplying said gases tangentially into said vessel for causing said gases to pass along said annular passage in a helical path.

Claim 11

Apparatus as set forth in claim 1 in which said passage is flared radially for increasing the cross sectional aRea thereof as the gas advances to the discharge end thereof.

Claim 12

Apparatus as set forth in claim 10 in which the walls of said vessel are flared outwardly toward the discharge end thereof.

Claim 13

Apparatus as set forth in claim 1 wherein said plate has a plurality of said slots therein with a separator disposed on each of said slots.

Claim 14

Apparatus as set forth in claim 1 wherein said passage has an annular restriction therein forming an annular venturi throat.

Claim 15

Apparatus for cleaning gases comprising a vessel having peripheral walls, an inlet communicating with said vessel for introducing gases to be cleaned, an axial core member disposed in said vessel and forming with said walls an annular gas passage, means supplying wash liquid to said passage, a reservoir disposed across the discharge end of said vessel to receive said wash liquid, a drying means communicating with the discharge end of said vessel to receive gases therefrom including a plate having at least one slot therein, a centrifugal separator disposed on said slot in flow communication therewith including an outer wall on one side of said slot and an inner hollow wall defining a gas outlet, said inner wall spaced from the outer wall with the outer wall extending over the inner wall to form an arcuate path therebetween, a liquid outlet defined by an end of the outer wall remote from the inlet, a series of gas inlet openings on the inner wall remote from the inlet, said inner wall having a gas outlet opening spaced from the gas inlet openings and liquid outlet whereby gas passes through said openings and liquid passes out said outlet, and a gas outlet communicating with said drying means for removing cleaned and dried gases.

Claim 16

Apparatus for cleaning gases comprising a vessel having peripheral walls, an inlet communicating with said vessel for introducing gases to be cleaned, an axial core member disposed in said vessel and forming with said walls an annular gas passage, means supplying wash liquid to said passage, a reservoir disposed across the discharge end of said vessel to receive said wash liquid, a drying means communicating with the discharge end of said vessel to receive gases therefrom including a plate having at least one slot therein, a centrifugal separator disposed on said slot in flow communication therewith including an outer wall on one side of said slot and an inner hollow wall defining a gas outlet, said inner wall spaced from the outer wall with the outer wall extending over the inner wall to form an arcuate path therebetween, a liquid outlet defined by an end of the outer wall remote from the inlet, a series of gas inlet openings on the inner wall remote from the inlet, said inner wall having a gas outlet opening spaced from the gas inlet openings and liquid outlet whereby gas passes through said openings and liquid passes out said outlet, and a gas outlet communicating with said drying means for removing cleaned and dried gases.

Claim 17

Apparatus as set forth in claim 14 wherein said plate has a plurality of said slots therein with a separator disposed on each of said slots.

Claim 18

Apparatus as set forth in claim 14 in which said reservoir comprises a hollow base on which said vessel rests.

Claim 19

Apparatus as set forth in claim 16 in which a conveyor is disposed in said base, said conveyor having scraping means to remove deposited material from said reservoir.

Claim 20

Apparatus as set forth in claim 14 including spring fingers disposed around said annular passage and extending across the path of the gas stream therein for breaking up suspended bubbles in the gas stream in advance of the discharge end of said passage.

Claim 21

Apparatus as set forth in claim 18 in which the walls of said vessel diverge outwardly at the lower end thereof for increasing the transverse area of said annular passage and providing increased surface area in said reservoir in which the foam may be broken down.

Claim 22

Apparatus as set forth in claim 14 including an inlet duct and an outlet duct and heat exchange means connected thereto.

Claim 23

Apparatus as set forth in claim 14 including means for withdrawing liquid from said collecting means and recycling the same as wash liquid.

Claim 24

Apparatus as set forth in claim 14 wherein said passage has an annular restriction therein forming an annular venturi throat.

Claim 25

A gas centrifugal drying unit comprising a vessel having a transverse plate dividing said vessel into inlet and discharge chambers, said plate having an elongated opening for the passage of gas and centrifugal separators for drying the gas, each of said separators comprising a hollow U-shaped baffle connected to said plate at the legs of the U disposed along one side of said openings and having oppositely disposed side walls, the side wall away from said opening having a series of holes therein for the passage of gas, said hollow baffle being open at one end for the discharge of such gas into said discharge compartment, and a curved deflector plate extending from said transverse plate on the side of said opening opposite said baffle and extending over and around said baffle to form an arcuate passage for gas and entrained liquid therebetween and terminating in a lip spaced above said transverse plaTe on the side of said baffle opposite said opening, the arrangmenet being such that entrained liquid is caused by centrifugal force to impinge upon and flow along the inner surface of said deflector plate in an arcuate path and to fall from said lip onto said transverse plate while a portion of the gas from which the liquid has been stripped flows into said hollow baffle and from the open end thereof into said discharge compartment and the remainder of said gas flows through the opening between said lip and said transverse plate into said last mentioned compartment.

Claim 26

A gas centrifugal drying unit comprising a vessel having a transverse plate dividing said vessel into inlet and discharge chambers, said plate having an elongated opening for the passage of gas and centrifugal separators for drying the gas, each of said separators comprising a hollow U-shaped baffle connected to said plate at the legs of the U disposed along one side of said openings and having oppositely disposed side walls, the side wall away from said opening having a series of holes therein for the passage of gas, said hollow baffle being open at one end for the discharge of such gas into said discharge compartment, and a curved deflector plate extending from said transverse plate on the side of said opening opposite said baffle and extending over and around said baffle to form an arcuate passage for gas and entrained liquid therebetween and terminating in a lip spaced above said transverse plaTe on the side of said baffle opposite said opening, the arrangmenet being such that entrained liquid is caused by centrifugal force to impinge upon and flow along the inner surface of said deflector plate in an arcuate path and to fall from said lip onto said transverse plate while a portion of the gas from which the liquid has been stripped flows into said hollow baffle and from the open end thereof into said discharge compartment and the remainder of said gas flows through the opening between said lip and said transverse plate into said last mentioned compartment.

Claim 27

A unit as set forth in claim 23 in which said transverse plate and baffle are upwardly inclined toward the open end of said baffle and means is provided to remove separated liquid from the lower portion of said transverse plate.

Claim 28

A unit as set forth in claim 23 in which said arcuate passage is of decreasing cross-section toward the discharge lip thereof for passing gases therealong at increasing velocity.

Claim 29

A unit as set forth in claim 23 including an adjustable damper disposed adjacent said baffle and positioned to control the gas flow through said arcuate passage.

Claim 30

A drying unit for removing entrained matter from gases comprising a vessel having peripheral walls, a transverse plate extending across said vessel to divide the same into inlet and outlet compartments, said plate having at least one slot through which the gases pass, a hollow baffle disposed on said plate adjacent said slot, a deflector vane defining a housing extending from said plate disposed on the opposite side of said slot and extending over the adjacent baffle surface to form an arcuate path therebetween to deflect the gases and entrained liquid thereover in an arcuate path, said baffle having a wall with gas inlet openings opposed to the slot and remote therefrom for the passage of gas, said vanes extending over said openings, and said housing having an open end for the discharge of collected liquids said inner wall having a gas outlet opening spaced from the gas inlet openings and the open end of the housing.

Claim 31

A drying unit for removing entrained matter from gases comprising a vessel having peripheral walls, a transverse plate extending across said vessel to divide the same into inlet and outlet compartments, said plate having at least one slot through which the gases pass, a hollow baffle disposed on said plate adjacent said slot, a deflector vane defining a housing extending from said plate disposed on the opposite side of said slot and extending over the adjacent baffle surface to form an arcuate path therebetween to deflect the gases and entrained liquid thereover in an arcuate path, said baffle having a wall with gas inlet openings opposed to the slot and remote therefrom for the passage of gas, said vanes extending over said openings, and said housing having an open end for the discharge of collected liquids said inner wall having a gas outlet opening spaced from the gas inlet openings and the open end of the housing.

Claim 32

Apparatus as set forth in claim 27 wherein said plate has a series of said slots and a series of said baffles and said vanes disposed thereon adjacent each of said slots.

Claim 33

Apparatus as set forth in claim 27 in which said plate is inclined downwardly at its periphery for the collection of the separated liquid.

Claim 34

Apparatus as set forth in claim 27 in which said drying vessel is disposed on a hollow base forming a reservoir adapted to receive the collected liquid.

Claim 35

Apparatus as set forth in claim 29 including at least one drainage pipe extending downwardly from the periphery of said plate into the liquid in the reservoir.

Claim 36

Apparatus as set forth in claim 29 in which said drying vessel is disposed on a hollow base forming a reservoir containing separated liquid and said pipe extends into the liquid in said reservoir.

Claim 37

Apparatus for washing and drying gases comprising a hollow base forming a reservoir for liquids, a gas washing unit comprising a vessel having peripheral walls disposed on said base and communicating therewith to receive gases therefrom, said base having a gas inlet opening above the level of the liquid thereon for passing gases over said liquid into said vessel for washing, said vessel having a central axial core forming with said walls an annular gas passage wherein the gases pass upwardly from said base, means disposed to supply a wash liquid to said passage and drying means in said vessel above said annular gas passage including a transverse plate extending across said vessel to divide the same into inlet and outlet compartments, said plate having at least one slot through which the gases pass, a hollow baffle disposed on said plate adjacent said slot, a deflector vane defining a housing extending from said plate disposed on the opposite side of said slot and extending over the adjacent baffle surface to form an arcuate path therebetween to deflect The gases and entrained liquid thereover in an arcuate path, said baffle having a wall with gas inlet openings opposed to the slot and remote therefrom for the passage of gas, said vanes extending over said openings and said housing having an open end for the discharge of collected liquids said inner wall having a gas outlet opening spaced from the gas inlet openings and the open end of the housing.

Claim 38

Apparatus for washing and drying gases comprising a hollow base forming a reservoir for liquids, a gas washing unit comprising a vessel having peripheral walls disposed on said base and communicating therewith to receive gases therefrom, said base having a gas inlet opening above the level of the liquid thereon for passing gases over said liquid into said vessel for washing, said vessel having a central axial core forming with said walls an annular gas passage wherein the gases pass upwardly from said base, means disposed to supply a wash liquid to said passage and drying means in said vessel above said annular gas passage including a transverse plate extending across said vessel to divide the same into inlet and outlet compartments, said plate having at least one slot through which the gases pass, a hollow baffle disposed on said plate adjacent said slot, a deflector vane defining a housing extending from said plate disposed on the opposite side of said slot and extending over the adjacent baffle surface to form an arcuate path therebetween to deflect The gases and entrained liquid thereover in an arcuate path, said baffle having a wall with gas inlet openings opposed to the slot and remote therefrom for the passage of gas, said vanes extending over said openings and said housing having an open end for the discharge of collected liquids said inner wall having a gas outlet opening spaced from the gas inlet openings and the open end of the housing.

Claim 39

Apparatus for washing and drying gases as set forth in claim 33 in which an annular restriction is disposed in said gas passage forming an annular venturi through which said gases pass.

Claim 40

Apparatus for washing and drying gases as set forth in claim 33 in which spray means is disposed to pass said wash liquid in the form of a spray through the gas stream in said passage.

Claim 41

Apparatus as set forth in claim 33 wherein said plate has a series of said slots and a series of said baffles and said vanes disposed thereon adjacent each of said slots.