US3880359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for decoking a delayed coker
Assignee: GREAT LAKES CARBON Corp
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Filing: 1974-04-24
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Granted: 1975-04-29
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Expires: 1994-04-24
Abstract
Abstract Coke is removed from the delayed coker or container by hydraulically cutting a substantial portion or all of it in a substantially vertical direction with water jet streams emanating from nozzles operatively mounted and coupled to a central drill stem which is provided with water under pressure and which is capable of rotation and vertical movement within the container. The coupling is by mechanical and hydraulic linking means permitting the movement of the nozzles in a radial direction from the axis of the central drill stem. After the cutting of the pilot hole with a conventional cutting head designed for that purpose, a substantial portion or all of the remainder of the coke in the container is removed by hydraulically cutting the coke in a substantially vertical direction by directing the water jet streams from the nozzles in a substantially vertical and downward direction against the horizontal surface of the coke in a series of radial incremental distances (which may be variable) substantially circumferentially across the surface of the coke. After each radial incremental cut, the drill stem is raised in the container, the nozzles are extended radially and the nozzles are then moved vertically from the top of the coke to the bottom thereof by lowering the drill stem as the coke is removed by the action of the water, thereby forming a varying, increasing diameter, cylindrical void in the container through which passes the remainder of the coke that is removed in this manner.
Inventors
- 👤 Anton R Novy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:42
CPC Classifications
C; C10; C10B; C10B33/00; C10B33/006
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
211 words
An apparatus used for removing coke from a delayed coking container by a series of substantially cylindrical and vertical hydraulic cuttings of the coke after a substantially vertical and central pilot hole is first cut through the entire height of the coke in the container, said removal means including: Water nozzles capable of directing water in jet streams in a substantially vertical and downward direction against the top surface of the coke; a central drill stem, which can be provided with water under pressure, capable of rotation and vertical movement within the container, to which stem the jet nozzles are operatively mounted and coupled; and mechanical and hydraulic linking means between the water nozzles and the central drill stem for radially extending the cutting action of the jet streams while simultaneously maintaining the jet nozzles in about the same substantially vertical direction, thus enabling each subsequent cylindrical hydraulic cutting in the series to enlarge the diameter of the central hole in the container by the total radial movement of the nozzles between each respective cutting in the series; the vertical and rotary movement of the drill stem, the radial extension of the linking means, and the hydraulic action of the jet streams all thus coacting in the removal of the coke.
Claim 2
Independent Claim
211 words
An apparatus used for removing coke from a delayed coking container by a series of substantially cylindrical and vertical hydraulic cuttings of the coke after a substantially vertical and central pilot hole is first cut through the entire height of the coke in the container, said removal means including: Water nozzles capable of directing water in jet streams in a substantially vertical and downward direction against the top surface of the coke; a central drill stem, which can be provided with water under pressure, capable of rotation and vertical movement within the container, to which stem the jet nozzles are operatively mounted and coupled; and mechanical and hydraulic linking means between the water nozzles and the central drill stem for radially extending the cutting action of the jet streams while simultaneously maintaining the jet nozzles in about the same substantially vertical direction, thus enabling each subsequent cylindrical hydraulic cutting in the series to enlarge the diameter of the central hole in the container by the total radial movement of the nozzles between each respective cutting in the series; the vertical and rotary movement of the drill stem, the radial extension of the linking means, and the hydraulic action of the jet streams all thus coacting in the removal of the coke.
Claim 3
Dependent Claim
108 words
An apparatus according to claim 1 wherein the linking means for radially extending the cutting action of the jet streams are actuated to a change of position by a motor, a screw driven by said motor, and a drive nut into which said screw is threaded, said drive nut being mechanically coupled to lever arms of said linking means and causing said lever arms to radially extend when said drive screw is further threaded into or through said nut, the operation of said motor being capable of being controlled from outside the coking container whenever one of the vertical cuttings in the series is ready to be commenced.
Claim 4
Dependent Claim
203 words
In an apparatus used for removing coke from a delayed coking container after a substantially vertical and central pilot hole is first cut through the entire height of the coke in the container, which apparatus includes a drill stem which can be provided with water under pressure and which drill stem is capable of rotation and vertical movement within the container and to which drill stem water nozzles capable of directing water in jet streams are operatively mounted and coupled, the improved removal means which include: Water nozzles capable of directing water in jet streams in a substantially vertical and downward direction against the top surface of the coke; and mechanical and hydraulic linking means between the water nozzles and the central drill stem for radially extending the cutting action of the jet streams while simultaneously maintaining the jet nozzles in about the same substantially vertical direction, thus enabling removal of coke from the container by a series of substantially cylindrical and vertical, hydraulic cuttings, and thus also enabling each subsequent cylindrical hydraulic cutting in the series to enlarge the diameter of the central hole in the container by the total radial movement of the nozzles between each respective cutting in the series.
Claim 5
Dependent Claim
203 words
In an apparatus used for removing coke from a delayed coking container after a substantially vertical and central pilot hole is first cut through the entire height of the coke in the container, which apparatus includes a drill stem which can be provided with water under pressure and which drill stem is capable of rotation and vertical movement within the container and to which drill stem water nozzles capable of directing water in jet streams are operatively mounted and coupled, the improved removal means which include: Water nozzles capable of directing water in jet streams in a substantially vertical and downward direction against the top surface of the coke; and mechanical and hydraulic linking means between the water nozzles and the central drill stem for radially extending the cutting action of the jet streams while simultaneously maintaining the jet nozzles in about the same substantially vertical direction, thus enabling removal of coke from the container by a series of substantially cylindrical and vertical, hydraulic cuttings, and thus also enabling each subsequent cylindrical hydraulic cutting in the series to enlarge the diameter of the central hole in the container by the total radial movement of the nozzles between each respective cutting in the series.
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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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |