US3795089A — Wet scrubber for air purifying systems

Claim 1

Independent Claim 252 words

Wet scrubbing apparatus comprising: a housing having an inlet and an outlet permitting gas flow through said housing; wetting means in said housing between said inlet and outlet for wetting gas flowing through said housing with a liquid purging agent; at least one liquid discharge opening in said housing for conducting liquid purging agent supplIed by said wetting means from said housing; and mounting means removably mounting said wetting means in said housing permitting installation and removal of the said wetting means transversely of the longitudinal axis of said housing; said wetting means comprising at least one jet bank, and said mounting means including an opening in the side wall of said housing and a removable plate covering said opening, said opening being of sufficient size to permit installation and removal therethrough of said jet bank; said mounting means further including a supply tube extending radially from said jet bank with its outer end projecting through said plate for connection with a supply of liquid purging agent; said mounting means further including gusset means extending between said supply tube and said plate; said gusset means including a pair of inner gussets extending between said supply tube and the inner surface of said plate, and a pair of outer gussets extending between said supply tube and the outer side of said plate; said mounting means further including a retaining tube projecting radially from said jet bank, and a retaining pin extending radially inwardly from the housing wall and received in said retaining tube.

Claim 2

Dependent Claim 252 words

Wet scrubbing apparatus comprising: a housing having an inlet and an outlet permitting gas flow through said housing; wetting means in said housing between said inlet and outlet for wetting gas flowing through said housing with a liquid purging agent; at least one liquid discharge opening in said housing for conducting liquid purging agent supplIed by said wetting means from said housing; and mounting means removably mounting said wetting means in said housing permitting installation and removal of the said wetting means transversely of the longitudinal axis of said housing; said wetting means comprising at least one jet bank, and said mounting means including an opening in the side wall of said housing and a removable plate covering said opening, said opening being of sufficient size to permit installation and removal therethrough of said jet bank; said mounting means further including a supply tube extending radially from said jet bank with its outer end projecting through said plate for connection with a supply of liquid purging agent; said mounting means further including gusset means extending between said supply tube and said plate; said gusset means including a pair of inner gussets extending between said supply tube and the inner surface of said plate, and a pair of outer gussets extending between said supply tube and the outer side of said plate; said mounting means further including a retaining tube projecting radially from said jet bank, and a retaining pin extending radially inwardly from the housing wall and received in said retaining tube.

Claim 3

Dependent Claim 44 words

Apparatus as claimed in claim 1 including a retaining pin opening in the wall of said housing, and a retaining cap overlying said retaining pin opening, and wherein said retaining pin projects through said retaining pin opening into threaded engagement with said retaining cap.

Claim 4

Dependent Claim 24 words

Apparatus as claimed in claim 2 wherein said jet bank comprises: a central distributor body, and jet spider means mounted on said distributor body.

Claim 5

Dependent Claim 27 words

Apparatus as claimed in claim 3 wherein said jet spider means includes a large spider and a small spider, said spiders being spaced axially from each other.

Claim 6

Dependent Claim 70 words

Apparatus as claimed in claim 4 wherein each of said spiders includes a plurality of jet tubes projecting radially from said distributor body, the jet tubes of said large spider each having a greater length than the jet tubes of said small spider, each of said jet tubes having jet nozzles at their outer ends for spraying liquid purging agent in a generally longitudinal direction with respect to said housing.

Claim 7

Dependent Claim 23 words

Apparatus as claimed in claim 5 including an outwardly projecting collar surrounding said opening, said plate overlying the outer end of said collar.

Claim 8

Dependent Claim 24 words

Apparatus as claimed in claim 1 wherein said wetting means comprises a central distributor body, and jet spider means mounted on said distributor body.

Claim 9

Dependent Claim 27 words

Apparatus as claimed in claim 7 wherein said jet spider means includes a large spider and a small spider, said spiders being spaced axially from each other.

Claim 10

Dependent Claim 69 words

Apparatus as claimed in claim 8 wherein each of said spiders includes a plurality of jet tubes projecting radially from said distributor, the jet tubes of said large spider each having a greater length than the jet tubes of said small spider, each of said jet tubes having jet nozzles at their outer ends for spraying liquid purging agent in a generally longitudinal direction with respect to said housing.

Claim 11

Dependent Claim 20 words

Apparatus as claimed in claim 1 including at least one packing in said housing between said inlet and said outlet.

Claim 12

Dependent Claim 25 words

Apparatus as claimed in claim 10 including packing retaining means removably retaining said packing in said housing for installation and removal axially of said housing.

Claim 13

Dependent Claim 61 words

Apparatus as claimed in claim 11 wherein said packing retaining means comprises a fixed retaining ring secured to the inner wall of said housing for engagement by one side of said packing near the periphery thereof, and a removable retaining ring axially installable and removable in said housing for engagement by the other side of said packing near the periphery thereof.

Claim 14

Dependent Claim 47 words

Apparatus as claimed in claim 12 wherein said packing retaining means further comprises a plurality of spacer rods each having one end secured to said removable retaining ring and extending axially therefrom, and a second removAble retaining ring secured to the other ends of said spacer rods.

Claim 15

Dependent Claim 18 words

Apparatus as claimed in claim 13 further including means providing an abutment for said second removable retaining ring.

Claim 16

Dependent Claim 43 words

Apparatus as claimed in claim 11 wherein said packing retaining means comprises a plurality of circumferentially spaced retaining pin assemblies each including a retaining pin projecting radially inwardly from the side wall of said housing for engagement by the periphery of said packing.

Claim 17

Dependent Claim 53 words

Apparatus as claimed in claim 11 wherein said wetting means comprises at least one jet bank, and said mounting means includes an opening in the side wall of said housing and a removable plate covering said opening, said opening being of sufficient size to permit installation and removal therethrough of said jet bank.

Claim 18

Dependent Claim 38 words

Apparatus as claimed in claim 16 wherein said mounting means further includes a supply tube extending radially from said jet bank with its outer end projecting through said plate for connection with a supply of liquid purging agent.

Claim 19

Dependent Claim 24 words

Apparatus as claimed in claim 1 including a sump mounted on the outer side wall of said housing communicating with said liquid discharge opening.

Claim 20

Dependent Claim 36 words

Apparatus as claimed in claim 18 including a liquid discharge opening on each side of each of said packings communicating with said sump, and a drain tube in said sump for conducting liquid from said sump.

Claim 21

Dependent Claim 31 words

Apparatus as claimed in claim 19 wherein the upper end of said drain tube is elevated above the bottom of said sump to provide a minimum liquid level in said sump.

Claim 22

Dependent Claim 42 words

Apparatus as claimed in claim 20 further including a plurality of separating walls extending from said housing into said sump to a depth below the upper end of said drain tube to prevent gas flowing through said housing from bypassing said packings.

Claim 23

Dependent Claim 228 words

Wet scrubbing apparatus comprising: a housing having an inlet and an outlet permitting gas flow through said housing; wetting means in said housing between said inlet and outlet for wetting gas flowing through said housing with a liquid purging agent; at least one liquid discharge opening in said housing for conducting liquid purging agent supplied by said wetting means from said housing; and mounting means removably mounting said wetting means in said housing permitting installation and removal of said wetting means transversely of the longitudinal axis of said housing; at least one packing in said housing between said inlet and said outlet; packing retaining means removably retaining said packing in said housing for installation and removal axially of said housing; said wetting means comprising at least one jet bank, and said mounting means includes an opening in the side wall of said housing and a removable plate covering said opening, said opening being of sufficient size to permit installation and removal therethrough of said jet bank; said mounting means further including a supply tube extending radially from said jet bank with its outer end projecting through said plate for connection with a supply of liquid purging agent; said mounting means further including a retaining tube projecting radially from each jet bank, and a retaining pin extending radially inwardly from the housing wall and received in said retaining tube.

Claim 24

Dependent Claim 228 words

Wet scrubbing apparatus comprising: a housing having an inlet and an outlet permitting gas flow through said housing; wetting means in said housing between said inlet and outlet for wetting gas flowing through said housing with a liquid purging agent; at least one liquid discharge opening in said housing for conducting liquid purging agent supplied by said wetting means from said housing; and mounting means removably mounting said wetting means in said housing permitting installation and removal of said wetting means transversely of the longitudinal axis of said housing; at least one packing in said housing between said inlet and said outlet; packing retaining means removably retaining said packing in said housing for installation and removal axially of said housing; said wetting means comprising at least one jet bank, and said mounting means includes an opening in the side wall of said housing and a removable plate covering said opening, said opening being of sufficient size to permit installation and removal therethrough of said jet bank; said mounting means further including a supply tube extending radially from said jet bank with its outer end projecting through said plate for connection with a supply of liquid purging agent; said mounting means further including a retaining tube projecting radially from each jet bank, and a retaining pin extending radially inwardly from the housing wall and received in said retaining tube.

Claim 25

Dependent Claim 24 words

Apparatus as claimed in claim 22 wherein said jet bank comprises: a central distributor body, and jet spider means mounted on said distributor body.

Claim 26

Dependent Claim 224 words

Wet scrubbing apparatus comprising: a housing having an inlet and an outlet permitting gas flow through said housing; wetting means in said housing between said inlet and outlet for wetting gas flowing through said housing with a liquid purging agent; at least one liquid discharge opening in said housing for conducting liquid purging agent supplied by said wetting means from said housing; and mounting means removably mounting said wetting means in said housing permitting installation and removal of said wetting means transversely of the longitudinal axis of said housing; at least one packing in said housing between said inlet and said outlet; packing retaining means removably retaining said packing in said housing for installation and removal axially of said housing; said packing retaining means comprises a fixed retaining ring secured to the inner wall of said housing for engagement by one side of said packing near the periphery thereof, and a removable retaining ring axially installable and removable in said housing for engagement by the other side of said packing near the periphery thereof; said packing retaining means further comprising a plurality of spacer rods each having one end secured to said removable retaining ring and extending axially therefrom, and a second removable retaining ring secured to the other ends of said spacer rods; means providing an abutment for said second removable retaining ring.

Claim 27

Dependent Claim 224 words

Wet scrubbing apparatus comprising: a housing having an inlet and an outlet permitting gas flow through said housing; wetting means in said housing between said inlet and outlet for wetting gas flowing through said housing with a liquid purging agent; at least one liquid discharge opening in said housing for conducting liquid purging agent supplied by said wetting means from said housing; and mounting means removably mounting said wetting means in said housing permitting installation and removal of said wetting means transversely of the longitudinal axis of said housing; at least one packing in said housing between said inlet and said outlet; packing retaining means removably retaining said packing in said housing for installation and removal axially of said housing; said packing retaining means comprises a fixed retaining ring secured to the inner wall of said housing for engagement by one side of said packing near the periphery thereof, and a removable retaining ring axially installable and removable in said housing for engagement by the other side of said packing near the periphery thereof; said packing retaining means further comprising a plurality of spacer rods each having one end secured to said removable retaining ring and extending axially therefrom, and a second removable retaining ring secured to the other ends of said spacer rods; means providing an abutment for said second removable retaining ring.

Claim 28

Dependent Claim 19 words

Apparatus as claimed in claim 24 wherein said last named means includes a second packing supported in said housing.

Claim 29

Dependent Claim 192 words

Wet scrubbing apparatus comprising: a housing having an inlet and an outlet permitting gas flow through said housing; wetting means in said housing between said inlet and outlet for wetting gas flowing through said housing with a liquid purging agent; at least one liquid discharge opening in said housing for conducting liquid purging agent supplied by said wetting means from said housing; and mounting means removably mounting said wetting means in said housing permitting installation and removal of said wetting means transversely of the longitudinal axis if said housing; at least one packing in said housing between said inlet and said outlet; packing retaining means removably retaining said packing in said housing for installation and removal axially of said housing; said packing retaining means comprises a plurality of circumferentially spaced retaining pin assemblies each including a retaining pin projecting radially inwardly from the side wall of said housing for engagement by the periphery of said packing, said retaining pin assembly each includes a socket member mounted on the outer wall of the housing, and a co-axial retaining pin opening formed in the wall of said housing for receiving a respective retaining pin.

Claim 30

Dependent Claim 192 words

Wet scrubbing apparatus comprising: a housing having an inlet and an outlet permitting gas flow through said housing; wetting means in said housing between said inlet and outlet for wetting gas flowing through said housing with a liquid purging agent; at least one liquid discharge opening in said housing for conducting liquid purging agent supplied by said wetting means from said housing; and mounting means removably mounting said wetting means in said housing permitting installation and removal of said wetting means transversely of the longitudinal axis if said housing; at least one packing in said housing between said inlet and said outlet; packing retaining means removably retaining said packing in said housing for installation and removal axially of said housing; said packing retaining means comprises a plurality of circumferentially spaced retaining pin assemblies each including a retaining pin projecting radially inwardly from the side wall of said housing for engagement by the periphery of said packing, said retaining pin assembly each includes a socket member mounted on the outer wall of the housing, and a co-axial retaining pin opening formed in the wall of said housing for receiving a respective retaining pin.

Claim 31

Dependent Claim 36 words

Apparatus as claimed in claim 26 wherein said retaining pin assembly further includes a plug threadedly mounted in said socket member, said plug having an internally threaded opening, the respective retaining pin being threadedly received therein.

Claim 32

Dependent Claim 54 words

Apparatus as claimed in claim 27 including one group of said retaining pin assemblies located on one side of said packing, a retaining ring engaging the other side of said packing at the periphery thereof, and a second group of said retaining pin assemblies engaging the side of said retaining ring opposite said packing.

Claim 33

Dependent Claim 248 words

Wet scrubbing apparatus comprising: a housing having an inlet and an outlet permitting gas flow through said housing; a plurality of jet banks mounted in said housing between said inlet and outlet and spaced from each other along the longitudinal axis of said housing for spraying liquid purging agent into said housing; each of said jet banks including a central distributor body located in said housing coaxial with the longitudinal axis of said housing and a pair of jet spiders mounted on said central distributor body in axially spaced relationship with respect to each other, each of said spiders including a plurality of jet tubes projecting radially from said central distributor body with a jet nozzle on the outer ends of each of said jet tubes for spraying liquid purging agent in a generally longitudinal direction with respect to said housing, the jet tubes of one of said spiders being of greater than the jet tubes of said other spider; a plurality of packings in said housing, each of said packings being located between an adjacent pair of said jet banks; at least one liquid discharge opening in said housing for conducting liquid purging agent from said housing; mounting means for mounting said jet banks in said housing for instaLlation and removal in a direction transverse to the longitudinal axis of said housing; and packing retaining means for supporting said packings in said housing for installation and removal in the direction of the longitudinal axis of said housing.

Claim 34

Dependent Claim 248 words

Wet scrubbing apparatus comprising: a housing having an inlet and an outlet permitting gas flow through said housing; a plurality of jet banks mounted in said housing between said inlet and outlet and spaced from each other along the longitudinal axis of said housing for spraying liquid purging agent into said housing; each of said jet banks including a central distributor body located in said housing coaxial with the longitudinal axis of said housing and a pair of jet spiders mounted on said central distributor body in axially spaced relationship with respect to each other, each of said spiders including a plurality of jet tubes projecting radially from said central distributor body with a jet nozzle on the outer ends of each of said jet tubes for spraying liquid purging agent in a generally longitudinal direction with respect to said housing, the jet tubes of one of said spiders being of greater than the jet tubes of said other spider; a plurality of packings in said housing, each of said packings being located between an adjacent pair of said jet banks; at least one liquid discharge opening in said housing for conducting liquid purging agent from said housing; mounting means for mounting said jet banks in said housing for instaLlation and removal in a direction transverse to the longitudinal axis of said housing; and packing retaining means for supporting said packings in said housing for installation and removal in the direction of the longitudinal axis of said housing.

Claim 35

Dependent Claim 68 words

Apparatus as claimed in claim 24 wherein the jet bank located nearest said inlet is disposed between said inlet and the packing located nearest said inlet, and is disposed to spray liquid purging agent in the direction of said outlet and hence toward the packing located nearest said inlet, and wherein the other jet banks are disposed to spray liquid purging agent in the direction of said inlet.

Claim 36

Dependent Claim 19 words

Apparatus as claimed in claim 29 including a droplet separator located downstream of the jet bank nearest said outlet.

Claim 37

Dependent Claim 13 words

Apparatus as claimed in claim 31 including a reducer secured to said outlet.

Claim 38

Dependent Claim 16 words

Apparatus as claimed in claim 32 wherein said reducer is located downstream of said droplet separator.

Claim 39

Dependent Claim 16 words

Apparatus as claimed in claim 32 wherein said droplet separator is located downstream of said reducer.

Claim 40

Dependent Claim 21 words

Apparatus as claimed in claim 33 wherein said housing is disposed vertically with said reducer mounted on the upper end thereof.

Claim 41

Dependent Claim 39 words

Apparatus as claimed in claim 35 including a semi-spherical bottom secured to the lower end of said housing and defining a sump for liquid purging agent, and a drain tube mounted in the lowermost point of said semi-spherical bottom.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1977-03-04	1977-09-03	1978-03-05	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1981-03-04	1981-09-03	1982-03-05	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1985-03-04	1985-09-03	1986-03-05	$7700.00	Window Closed / Lapsed

Wet scrubber for air purifying systems

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