Contactor/filter improvements

Patent · Sun Jan 01 00:00:00 EST 1989

OSTI ID:867177

Stelman, David ^[1]

---

1. West Hills, CA

A contactor/filter arrangement for removing particulate contaminants from a gaseous stream includes a housing having a substantially vertically oriented granular material retention member with upstream and downstream faces, a substantially vertically oriented microporous gas filter element, wherein the retention member and the filter element are spaced apart to provide a zone for the passage of granular material therethrough. The housing further includes a gas inlet means, a gas outlet means, and means for moving a body of granular material through the zone. A gaseous stream containing particulate contaminants passes through the gas inlet means as well as through the upstream face of the granular material retention member, passing through the retention member, the body of granular material, the microporous gas filter element, exiting out of the gas outlet means. Disposed on the upstream face of the filter element is a cover screen which isolates the filter element from contact with the moving granular bed and collects a portion of the particulates so as to form a dust cake having openings small enough to exclude the granular material, yet large enough to receive the dust particles. In one embodiment, the granular material is comprised of prous alumina impregnated with CuO, with the cover screen cleaned by the action of the moving granular material as well as by backflow pressure pulses.

• Research Organization: Rockwell International Corp., Canoga Park, CA (United States)
• DOE Contract Number: AC22-83PC60262
• Assignee: United State of America as represented by United States (Washington, DC)
• Patent Number(s): US 4880608
• OSTI ID: 867177
• Country of Publication: United States
• Language: English

Related Subjects

contactor
filter
improvements
arrangement
removing
particulate
contaminants
gaseous
stream
housing
substantially
vertically
oriented
granular
material
retention
upstream
downstream
microporous
gas
element
spaced
apart
provide
zone
passage
therethrough
inlet
means
outlet
moving
containing
passes
passing
exiting
disposed
cover
screen
isolates
contact
bed
collects
portion
particulates
form
dust
cake
openings
exclude
receive
particles
embodiment
comprised
prous
alumina
impregnated
cuo
cleaned
action
backflow
pressure
pulses
removing particulate
substantially vertical
particulate contaminants
outlet means
gas filter
gas outlet
gaseous stream
filter element
gas inlet
vertically oriented
spaced apart
stream containing
granular material
inlet means
substantially vertically
moving granular
porous gas
pressure pulse
filter arrangement
material retention
containing particulate
pressure pulses
/423/55/95/422/