US5565020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and arrangement for separating particulate solids
Assignee: Honeywell UOP LLC
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Filing: 1994-11-25
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Granted: 1996-10-15
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Expires: 2014-11-25
Abstract
Abstract In this invention a cyclonic separation method and apparatus discharges particulate solids and gaseous fluids into a separation vessel from a discharge opening of a central conduit and withdraws separated gaseous fluids from the separation vessel with a recovery conduit having an inlet located below the discharge opening. Recovery of separated gases using cyclonic separation is improved by the specific location of the recovery piping inlet which reduces the entrainment of fine particles with the gases.
Inventors
- 👤 Steven Niewiedzial
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:08
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/12
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
121 words
An apparatus for separating solid particles from a stream comprising a mixture of gaseous fluids and solid particles, said apparatus comprising: a separation vessel; a mixture conduit extending vertically into a central section of said separation vessel and defining a discharge opening located within said vessel and tangentially oriented for discharging said stream into the open interior of said vessel and imparting a tangential velocity to said stream; a particle outlet defined by said separation vessel for discharging particles from a lower portion of said vessel; and, a gas recovery conduit defining an inlet for withdrawing gaseous fluids from within the open interior of said separation vessel at a location below said discharge opening and radially offset from the mixture conduit.
Claim 2
Independent Claim
121 words
An apparatus for separating solid particles from a stream comprising a mixture of gaseous fluids and solid particles, said apparatus comprising: a separation vessel; a mixture conduit extending vertically into a central section of said separation vessel and defining a discharge opening located within said vessel and tangentially oriented for discharging said stream into the open interior of said vessel and imparting a tangential velocity to said stream; a particle outlet defined by said separation vessel for discharging particles from a lower portion of said vessel; and, a gas recovery conduit defining an inlet for withdrawing gaseous fluids from within the open interior of said separation vessel at a location below said discharge opening and radially offset from the mixture conduit.
Claim 3
Dependent Claim
31 words
The apparatus of claim 1 wherein said separation vessel is a containment vessel having an open interior and said gas recovery conduit communicates with a cyclone separator located in said vessel.
Claim 4
Dependent Claim
24 words
The apparatus of claim 1 wherein said mixture conduit is a vertical riser conduit that extends upwardly into a central portion of said vessel.
Claim 5
Dependent Claim
15 words
The apparatus of claim 1 wherein said separation vessel is located within a containment vessel.
Claim 6
Dependent Claim
30 words
The apparatus of claim 1 wherein said separation vessel is cylindrical and said discharge opening is spaced radially farther from the central axis of said separation vessel than said inlet.
Claim 7
Dependent Claim
18 words
The apparatus of claim 5 wherein said inlet comprises an opening in the form of an annular segment.
Claim 8
Dependent Claim
17 words
The apparatus of claim 5 wherein said inlet comprises an opening in the form of an annulus.
Claim 9
Independent Claim
128 words
An apparatus for separating solid particles from a stream comprising a mixture of gaseous fluids and solid particles, said apparatus comprising: a containment vessel; a separation vessel located within said containment vessel having an open bottom; a central conduit extending vertically into said separation vessel; at least two curved conduits located in said separation vessel, said curved conduits communicating with and extending radially from said central conduit, each curved conduit defining a discharge opening for the tangential discharge of said stream into the open interior of said separation vessel; and a gas recovery conduit defining an inlet located below and radially inward from said discharge opening for collecting gaseous fluids from within the open interior of said separation vessel, said inlet being radially offset from said central conduit.
Claim 10
Independent Claim
128 words
An apparatus for separating solid particles from a stream comprising a mixture of gaseous fluids and solid particles, said apparatus comprising: a containment vessel; a separation vessel located within said containment vessel having an open bottom; a central conduit extending vertically into said separation vessel; at least two curved conduits located in said separation vessel, said curved conduits communicating with and extending radially from said central conduit, each curved conduit defining a discharge opening for the tangential discharge of said stream into the open interior of said separation vessel; and a gas recovery conduit defining an inlet located below and radially inward from said discharge opening for collecting gaseous fluids from within the open interior of said separation vessel, said inlet being radially offset from said central conduit.
Claim 11
Dependent Claim
24 words
The apparatus of claim 8 wherein said central conduit is a vertical riser conduit that extends upwardly into a central portion of said vessel.
Claim 12
Dependent Claim
18 words
The apparatus of claim 8 wherein said inlet comprises an opening in the form of an annular segment.
Claim 13
Dependent Claim
17 words
The apparatus of claim 8 wherein said inlet comprises an opening in the form of an annulus.
Claim 14
Independent Claim
105 words
A method for separating solid particles from a stream comprising a mixture of solid particles and gaseous fluids, said method comprising: passing said mixture of solid particles and gaseous fluids into a separation vessel through a central conduit; tangentially discharging said mixture from a discharge opening into the open interior of said separation vessel; collecting gaseous fluids from said separation vessel into an inlet below said discharge opening and radially offset from the central conduit and withdrawing gaseous fluids from the open interior of said separation vessel; and passing solid particles from said separation vessel at a location below said discharge opening and said inlet.
Claim 15
Independent Claim
105 words
A method for separating solid particles from a stream comprising a mixture of solid particles and gaseous fluids, said method comprising: passing said mixture of solid particles and gaseous fluids into a separation vessel through a central conduit; tangentially discharging said mixture from a discharge opening into the open interior of said separation vessel; collecting gaseous fluids from said separation vessel into an inlet below said discharge opening and radially offset from the central conduit and withdrawing gaseous fluids from the open interior of said separation vessel; and passing solid particles from said separation vessel at a location below said discharge opening and said inlet.
Claim 16
Dependent Claim
31 words
The method of claim 12 wherein said stream is discharged at a location farther from the center of said separation vessel than the location from which the gaseous fluids are withdrawn.
Claim 17
Dependent Claim
18 words
The method of claim 12 further comprising passing said gaseous fluids from said inlet to a cyclone separator.
Claim 18
Dependent Claim
16 words
The method of claim 12 wherein said stream is discharged from at least two discharge openings.
Claim 19
Dependent Claim
25 words
The method of claim 12 wherein said solid particles comprise catalyst particles and said central conduit comprises a riser in a fluidized catalytic cracking process.
Claim 20
Dependent Claim
12 words
The method of claim 16 wherein said riser is a reactor riser.
Claim 21
Independent Claim
111 words
An apparatus for separating solid particles from a stream comprising a mixture of gaseous fluids and solid particles, said apparatus comprising: a separation vessel; a mixture conduit extending into said separation vessel and defining a discharge opening located within said vessel and tangentially oriented for discharging said stream into said vessel and imparting a tangential velocity to said stream; a particle outlet defined by said separation vessel for discharging particles from a lower portion of said vessel; and, a gas recovery conduit defining an inlet in the form of at least a segment of an annulus for withdrawing gaseous fluids within said separation vessel at a location below said discharge opening.
Claim 22
Independent Claim
111 words
An apparatus for separating solid particles from a stream comprising a mixture of gaseous fluids and solid particles, said apparatus comprising: a separation vessel; a mixture conduit extending into said separation vessel and defining a discharge opening located within said vessel and tangentially oriented for discharging said stream into said vessel and imparting a tangential velocity to said stream; a particle outlet defined by said separation vessel for discharging particles from a lower portion of said vessel; and, a gas recovery conduit defining an inlet in the form of at least a segment of an annulus for withdrawing gaseous fluids within said separation vessel at a location below said discharge opening.
Claim 23
Dependent Claim
17 words
The apparatus of claim 18 wherein said inlet comprises and opening in the form of an annulus.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-10-15 | 2000-04-15 | 2000-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-10-15 | 2004-04-15 | 2004-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-10-15 | 2008-04-15 | 2008-10-15 | $7700.00 | Window Closed / Lapsed |