US4032299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spent catalyst regeneration apparatus with internal regenerated-catalyst recycle means
Assignee: Honeywell UOP LLC
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Filing: 1976-03-15
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Granted: 1977-06-28
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Expires: 1996-03-15
Abstract
Abstract A catalyst regeneration apparatus for the oxidation of coke from a spent catalyst and for the conversion of carbon monoxide resulting from the oxidation of coke to carbon monoxide. The apparatus comprises in combination and particular arrangement a spent-catalyst receiving chamber for containing a dense-bed of fluidized catalyst in which chamber spent catalyst is oxidized to produce regenerated catalyst and partially-spent regeneration gas; a transfer conduit through which partially-spent regeneration gas and regenerated catalyst pass and in which carbon monoxide is essentially completely converted to carbon dioxide to produce spent regeneration gas and regenerated catalyst at an increased temperature; a regenerated-catalyst receiving chamber for containing dense-bed of regenerated catalyst and in which spent regeneration gas and regenerated catalyst are separated; and, an internal regenerated-catalyst recycle means by which hot regenerated catalyst can be recycled from the transfer conduit to the spent-catalyst receiving chamber in amounts to increase the temperature and hence the rate of coke oxidation in the spent-catalyst receiving chamber.
Inventors
- 👤 Richard P. Pulak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:46
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18; C10G11/182; B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/26; Y; Y02; Y02P; Y02P30/00; Y02P30/40
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
271 words
An apparatus for oxidizing coke on spent catalyst which comprises in combination: a. a spent-catalyst receiving chamber for containing a dense-phase fluidized bed of catalyst having a spent catalyst inlet means and a fresh-regeneration gas inlet means connected thereto to allow passage of spent catalyst and fresh regeneration gas respectively into said chamber and having a regenerated-catalyst/regeneration-gas outlet means connected thereto to allow passage of regenerated catalyst and regeneration gas from said chamber; b. a transfer conduit positioned above said spent-catalyst receiving chamber and having a substantially vertical portion and a substantially horizontal portion in interconnection with said vertical portion, said vertical portion extending above said horizontal portion and having an inlet connected to the regenerated-catalyst/regeneration-gas outlet means and said horizontal portion extending into the side of a hereinafter described regenerated-catalyst receiving chamber and being provided with an outlet means into said chamber whereby regenerated catalyst and regeneration gas are carried from said spent-catalyst receiving chamber in admixture to said regenerated-catalyst receiving chamber, said portions of said transfer conduit being of sufficient internal volume to permit CO oxidation and transfer of the heat of combustion to said catalyst therein; c. an internal regenerated-catalyst recycle means, having an inlet means in the transfer conduit and an outlet means in the spent-catalyst receiving chamber, to allow passage of a portion of regenerated catalyst from the transfer conduit to the spent-catalyst receiving chamber; and, d. a regenerated-catalyst receiving chamber for containing a dense-phase bed of regenerated catalyst, said chamber having a regenerated-catalyst outlet means and a spent-regeneration-gas outlet means connected thereto to allow passage of regenerated catalyst and spent regeneration gas from said chamber.
Claim 2
Independent Claim
271 words
An apparatus for oxidizing coke on spent catalyst which comprises in combination: a. a spent-catalyst receiving chamber for containing a dense-phase fluidized bed of catalyst having a spent catalyst inlet means and a fresh-regeneration gas inlet means connected thereto to allow passage of spent catalyst and fresh regeneration gas respectively into said chamber and having a regenerated-catalyst/regeneration-gas outlet means connected thereto to allow passage of regenerated catalyst and regeneration gas from said chamber; b. a transfer conduit positioned above said spent-catalyst receiving chamber and having a substantially vertical portion and a substantially horizontal portion in interconnection with said vertical portion, said vertical portion extending above said horizontal portion and having an inlet connected to the regenerated-catalyst/regeneration-gas outlet means and said horizontal portion extending into the side of a hereinafter described regenerated-catalyst receiving chamber and being provided with an outlet means into said chamber whereby regenerated catalyst and regeneration gas are carried from said spent-catalyst receiving chamber in admixture to said regenerated-catalyst receiving chamber, said portions of said transfer conduit being of sufficient internal volume to permit CO oxidation and transfer of the heat of combustion to said catalyst therein; c. an internal regenerated-catalyst recycle means, having an inlet means in the transfer conduit and an outlet means in the spent-catalyst receiving chamber, to allow passage of a portion of regenerated catalyst from the transfer conduit to the spent-catalyst receiving chamber; and, d. a regenerated-catalyst receiving chamber for containing a dense-phase bed of regenerated catalyst, said chamber having a regenerated-catalyst outlet means and a spent-regeneration-gas outlet means connected thereto to allow passage of regenerated catalyst and spent regeneration gas from said chamber.
Claim 3
Dependent Claim
33 words
The apparatus of claim 1 further characterized in that said outlet of said transfer conduit is in communication with a disengaging space provided to separate catalyst and regeneration gas passing through said conduit.
Claim 4
Dependent Claim
22 words
The apparatus of claim 1 further characterized in that said internal regenerated-catalyst recycle means comprises a conduit and a catalyst collecting means.
Claim 5
Independent Claim
371 words
An apparatus for oxidizing coke on spent catalyst which comprises in combination: a. a spent-catalyst receiving chamber for containing a dense-phase fluidized bed of catalyst, said chamber having upper and lower sections, a fresh-regeneration-gas inlet means connected to said chamber at said lower section to allow passage of fresh regeneration gas into said chamber through said lower section, a spent-catalyst inlet means connected to said chamber to allow passage of spent catalyst into said chamber, and a regenerated-catalyst/regeneration-gas outlet means at the upper section of said chamber to allow passage of regenerated catalyst and regeneration gas in admixture from said chamber; b. a transfer conduit positioned above said spent catalyst receiving chamber and having a substantially vertical portion and a substantially horizontal portion in interconnection with said vertical portion, said vertical portion extending above said horizontal portion and having an inlet for regenerated catalyst and regeneration gas connected to the regenerated-catalyst/regeneration-gas outlet means, said horizontal portion extending into the side of a hereinafter described regenerated-catalyst receiving chamber and having an outlet means within said chamber in communication with a disengaging space whereby regenerated catalyst and regeneration-gas are carried in admixture from said spent-catalyst receiving chamber to said disengaging space, said portions of said transfer conduit being of sufficient internal volume to permit CO oxidation and transfer of the heat of combustion to said catalyst therein; c. a vertically disposed internal regenerated-catalyst recycle means comprising: a catalyst collecting means, located in the substantially vertical portion of the transfer conduit and having catalyst inlet means and catalyst outlet means; and, a downwardly extending conduit, having an inlet means attached to the outlet means of said collecting means and an outlet means located within the spent-catalyst receiving chamber, to allow passage of a portion of the regenerated catalyst from the transfer conduit to the spent-catalyst receiving chamber; and, d. a regeneration-catalyst receiving chamber for containing a dense-phase bed of regenerated catalyst, said regenerated-catalyst receiving chamber having upper and lower sections, a spent-regeneration-gas outlet means connected to said chamber at its upper section to allow passage of spent regeneration gas from said chamber, and a regenerated-catalyst outlet means connected to said chamber at its lower section to allow passage of regenerated catalyst from said chamber.
Claim 6
Independent Claim
371 words
An apparatus for oxidizing coke on spent catalyst which comprises in combination: a. a spent-catalyst receiving chamber for containing a dense-phase fluidized bed of catalyst, said chamber having upper and lower sections, a fresh-regeneration-gas inlet means connected to said chamber at said lower section to allow passage of fresh regeneration gas into said chamber through said lower section, a spent-catalyst inlet means connected to said chamber to allow passage of spent catalyst into said chamber, and a regenerated-catalyst/regeneration-gas outlet means at the upper section of said chamber to allow passage of regenerated catalyst and regeneration gas in admixture from said chamber; b. a transfer conduit positioned above said spent catalyst receiving chamber and having a substantially vertical portion and a substantially horizontal portion in interconnection with said vertical portion, said vertical portion extending above said horizontal portion and having an inlet for regenerated catalyst and regeneration gas connected to the regenerated-catalyst/regeneration-gas outlet means, said horizontal portion extending into the side of a hereinafter described regenerated-catalyst receiving chamber and having an outlet means within said chamber in communication with a disengaging space whereby regenerated catalyst and regeneration-gas are carried in admixture from said spent-catalyst receiving chamber to said disengaging space, said portions of said transfer conduit being of sufficient internal volume to permit CO oxidation and transfer of the heat of combustion to said catalyst therein; c. a vertically disposed internal regenerated-catalyst recycle means comprising: a catalyst collecting means, located in the substantially vertical portion of the transfer conduit and having catalyst inlet means and catalyst outlet means; and, a downwardly extending conduit, having an inlet means attached to the outlet means of said collecting means and an outlet means located within the spent-catalyst receiving chamber, to allow passage of a portion of the regenerated catalyst from the transfer conduit to the spent-catalyst receiving chamber; and, d. a regeneration-catalyst receiving chamber for containing a dense-phase bed of regenerated catalyst, said regenerated-catalyst receiving chamber having upper and lower sections, a spent-regeneration-gas outlet means connected to said chamber at its upper section to allow passage of spent regeneration gas from said chamber, and a regenerated-catalyst outlet means connected to said chamber at its lower section to allow passage of regenerated catalyst from said chamber.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |