Petroleum coking drum with slump preventers

• US H1,442 H
• Filed: 11/16/1992
• Issued: 06/06/1995
• Est. Priority Date: 11/16/1992
• Status: Abandoned Application

• Current Assignee: David M. Edgerton, Kerry L. Willis, Kip W. Miller
• Original Assignee: David M. Edgerton, Kerry L. Willis, Kip W. Miller
• Inventors: Edgerton, David M., Miller, Kip W., Willis, Kerry L.
• Primary Examiner(s): Wu, Shean
• Application Number:
  US79/768,13
• Time in Patent Office: 932 Days
• Field of Search: 196122, 196125, 196130, 196133, 202121, 202222, 202241, 202252, 202261
• CPC Class Codes: C10B 1/04 Vertical retorts
• CPC Class Codes: C10B 33/00 Discharging devices; Coke guides

Abstract

Petroleum coke slumping in a petroleum coking drum is reduced by the use of a petroleum coking drum comprising a) a generally cylindrical vessel having a principal diameter portion, an upper reduced diameter portion at an upper end of the vessel, an upper reducing diameter portion extending from a lower end of the upper reduced diameter portion to an upper end of the principal diameter portion, a lower reduced diameter portion at a lower end of the vessel and a lower reducing diameter portion extending from an upper end of the lower reduced diameter portion to a lower end of the principal diameter portion; b) a top head removably positionable to close the upper reduced diameter portion; c) a bottom head removably positionable to close the lower reduced diameter portion; and d) a plurality of restraining bars positioned around an inner circumference of the lower reduced diameter portion. Restraining bars may also be positioned on inner surfaces of the lower reducing diameter portion or on both the reducing diameter portion and the reduced diameter portion of the inner walls of the petroleum coking drum.

Claims

1. A petroleum coking drum comprising:

a) a generally cylindrical vessel having a principal diameter portion, an upper reduced diameter portion at an upper end of said vessel, an upper reducing diameter portion extending from a lower end of said upper reduced diameter portion to an upper end of said principal diameter portion, a lower reduced diameter portion at a lower end of said vessel and a lower reducing diameter portion extending from an upper end of said lower reduced diameter portion to a lower end of said principal diameter portion;

b) a top head removable positionable to close said upper reduced diameter portion;

c) a bottom head removable positionable to close said lower reduced diameter portion; and

d) a plurality of restraining bars positioned around an inner circumference of said lower reduced diameter portion.

2. The drum of claim 1 wherein said restraining bars are less than about 4 inches in height.

3. The drum of claim 2 wherein said restraining bars are from about 0.5 to about 4 inches in height.

4. The drum of claim 1 wherein said restraining bars are less than about 4 inches wide.

5. The drum of claim 4 wherein said bars are from about 0.5 to about 4 inches wide.

6. The drum of claim 1 wherein said restraining bars are less than 2 feet in length.

7. A petroleum coking drum comprising:

a) a generally cylindrical vessel having a principal diameter portion, an upper reduced diameter portion at an upper end of said vessel, an upper reducing diameter portion extending from a lower end of said upper reduced diameter portion to an upper end of said principal diameter portion, a lower reduced diameter portion at a lower end of said vessel and a lower reducing diameter portion extending from an upper end of said lower reduced diameter portion to a lower end of said principal diameter portion;

b) a top head removable positionable to close said upper reduced diameter portion;

c) a bottom head removable positionable to close said lower reduced diameter portion; and

d) a plurality of restraining bars positioned around an inner circumference of said lower reducing diameter portion.

8. The drum of claim 7 wherein said restraining bars are less than about 4 inches in height.

9. The drum of claim 8 wherein said restraining bars are from about 0.5 to about 4 inches in height.

10. The drum of claim 7 wherein said restraining bars are less than about 4 inches wide.

11. The drum of claim 10 wherein said bars are from about 0.5 to about 4 inches wide.

12. The drum of claim 7 wherein said restraining bars are less than 2 feet in length.

13. A petroleum coking drum comprising:

a) a generally cylindrical vessel having a principal diameter portion, an upper reduced diameter portion at an upper end of said vessel, an upper reducing diameter portion extending from a lower end of said upper reduced diameter portion to an upper end of said principal diameter portion, a lower reduced diameter portion at a lower end of said vessel and a lower reducing diameter portion extending from an upper end of said lower reduced diameter portion to a lower end of said principal diameter portion;

b) a top head removable positionable to close said upper reduced diameter portion;

c) a bottom head removable positionable to close said lower reduced diameter portion; and

d) a plurality of restraining bars positioned around an inner circumference of said lower reduced diameter portion and an inner circumference of said lower reducing diameter portion.

14. The drum of claim 13 wherein said restraining bars are less than about 4 inches in height.

15. The drum of claim 14 wherein said restraining bars are from about 0.5 to about 4 inches in height.

16. The drum of claim 13 wherein said restraining bars are less than about 4 inches wide.

17. The drum of claim 16 wherein said bars are from about 0.5 to about 4 inches wide.

18. The drum of claim 13 wherein said restraining bars are less than 2 feet in length.