Containment system for coke drums
First Claim
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1. An apparatus for confining the discharge of coke, liquids and/or gases from a bottom outlet of a coke drum, the coke drum being supported above a switch deck floor, comprising:
- a shield of dimensions in a horizontal plane greater than that of a horizontal plane of the coke drum bottom outlet and of vertical height at least about as great as the height of the bottom outlet above the switch deck floor;
a system to move said shield into position to cover an area from the drum bottom outlet to the switch deck floor.
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Abstract
A system that reduces worker exposure during coke drum unheading and cutting operations and that reduces risk to workers also provides a capacity increase in that the time a coke drum is not being filled is reduced. This system employs a containment shield that safely permits drainage through the bottom head and contains water and coke avalanches.
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Citations
17 Claims
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1. An apparatus for confining the discharge of coke, liquids and/or gases from a bottom outlet of a coke drum, the coke drum being supported above a switch deck floor, comprising:
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a shield of dimensions in a horizontal plane greater than that of a horizontal plane of the coke drum bottom outlet and of vertical height at least about as great as the height of the bottom outlet above the switch deck floor; a system to move said shield into position to cover an area from the drum bottom outlet to the switch deck floor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A safety improved coke drum supported above a switch deck floor comprising:
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an upright coke drum having a sidewall and a lower portion that tapers downwardly and inwardly from a lower end portion of the sidewall to a bottom end that has a large diameter bottom outlet therein, the bottom outlet being spaced above the switch deck floor; a removable cover closing said bottom outlet; a shield of dimensions in a horizontal plane greater than that of a horizontal plane of the coke drum bottom outlet and of vertical height at least about as great as the height of the bottom outlet above the switch deck floor; and a plurality of actuators connected to said circumferential shield; and a system to move said shield with respect to said drum bottom outlet to selectably position said shield to encompass an area between said bottom outlet and the switch deck floor. - View Dependent Claims (8, 9, 10, 11)
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12. For use with an upright coke drum having a sidewall and a lower portion that tapers downwardly and inwardly from the sidewell to a bottom and that has a large diameter bottom outlet therein, the bottom outlet being spaced above a switch deck floor, a safety system comprising:
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a removable cover closing the coke drum bottom outlet; remotely controllable unheading apparatus for unheading said closure from the bottom outlet; and a shield of dimensions in a horizontal plane greater than that of a horizontal plane of the coke drum bottom outlet and said unheading apparatus and of vertical height at least about as great as the height of the bottom outlet above the switch deck floor, the shield at least substantially surrounding an area between the bottom outlet and the switch deck floor configured to confine discharges from the coke drum when said cover is unheaded from the bottom outlet. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification