US4356151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solids quench boiler
Assignee: Stone and Webster Engineering Corp
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Filing: 1980-07-03
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Granted: 1982-10-26
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Expires: 2000-07-03
Abstract
Abstract Apparatus for quenching and cooling the reactor effluent in a thermal regenerative cracking (TRC) system. The quench apparatus includes a section for introducing relatively cool particulate solids into a hot effluent stream to effect initial quenching and a section to further cool the composite of quenched effluent and solids.
Inventors
- 👤 Herman N. Woebcke
- 👤 Arju H. Bhojwani
- 👤 Robert J. Gartside
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:39
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/28; C10G9/32; B; B01; B01J; B01J8/00; B01J8/0015; B01J8/003; C10G2400/00; C10G2400/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
211 words
In a TRC apparatus having a reaction cracking chamber and means for quenching the cracked effluent and wherein the temperature in the cracking zone is between 1300° and 2500° F. and wherein the hydrocarbon feed or the hydrosulfurization residual oil along with the entrained inert solids and the diluent gas are passed through the cracking zone for a residence time of 0.05 to 2 seconds, and then quench cooled, the improvement wherein said means for quenching the effluent comprises: a. a quench chamber containing a fluidized bed of particulate solids; b. a reactor effluent outlet tube extending from said reaction cracking chamber and extending into the fluidized bed; c. a riser tube having an inside diameter larger than the outside diameter of the reactor outlet tube aligned with the reactor outlet tube, which riser tube surrounds the reactor outer tube and depends into the fluidized bed below the top of the reactor outlet tube; d. an opening defined by the outside of the reactor outlet tube and the inside of the riser tube which opening provides communication between the fluidized bed and the interior of the riser tube; and e. an indirect heat exchanger, wherein the riser tube terminates at the entry of the hot side of the indirect heat exchanger.
Claim 2
Dependent Claim
211 words
In a TRC apparatus having a reaction cracking chamber and means for quenching the cracked effluent and wherein the temperature in the cracking zone is between 1300° and 2500° F. and wherein the hydrocarbon feed or the hydrosulfurization residual oil along with the entrained inert solids and the diluent gas are passed through the cracking zone for a residence time of 0.05 to 2 seconds, and then quench cooled, the improvement wherein said means for quenching the effluent comprises: a. a quench chamber containing a fluidized bed of particulate solids; b. a reactor effluent outlet tube extending from said reaction cracking chamber and extending into the fluidized bed; c. a riser tube having an inside diameter larger than the outside diameter of the reactor outlet tube aligned with the reactor outlet tube, which riser tube surrounds the reactor outer tube and depends into the fluidized bed below the top of the reactor outlet tube; d. an opening defined by the outside of the reactor outlet tube and the inside of the riser tube which opening provides communication between the fluidized bed and the interior of the riser tube; and e. an indirect heat exchanger, wherein the riser tube terminates at the entry of the hot side of the indirect heat exchanger.
Claim 3
Dependent Claim
37 words
An apparatus as in claim 1 further comprising a diverging cone at the lower end of the riser tube and a converging cone formed on the outer surface of the upper end of the reactor outlet tube.
Claim 4
Dependent Claim
32 words
An apparatus as in claim 1 further comprising a diverging cone at the termination of the riser tube terminating at the entry end of the hot side of the indirect heat exchanger.
Claim 5
Dependent Claim
29 words
An apparatus as in claim 3 wherein the divergent cone on the riser tube is at an angle to the axis of the riser tube of less than 10°.
Claim 6
Dependent Claim
75 words
An apparatus as in claim 1 wherein said indirect heat exchanger comprises: a first circular parallel array of vertical tubes joined together to form a pressure-tight outer surface for the indirect heat exchanger; a first torus to which one end of the first circular array of tubes is manifolded; a second torus to which the other end of the first circular array of tubes is manifolded; and means for delivering coolant to the first torus.
Claim 7
Dependent Claim
25 words
An apparatus as in claim 5 wherein additional vertically disposed cooling tubes are arranged in concentric circular arrays within said first circular array of tubes.
References Cited (Backward Citations)
US2433726A
Cited
US2943922A
Cited
US3224869A
Cited
US3583476A
Cited
US3718708A
Cited
US3898043A
Cited
US4061562A
Cited
US4097363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-25 | 1986-04-26 | 1986-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-25 | 1990-04-26 | 1990-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-25 | 1994-04-26 | 1994-10-26 | $7700.00 | Window Closed / Lapsed |