Coke drum discharge system

• US 7,438,786 B2
• Filed: 07/09/2004
• Issued: 10/21/2008
• Est. Priority Date: 11/09/2001
• Status: Expired due to Term

• Current Assignee: Foster Wheeler USA Corporation (John Wood Group PLC)
• Original Assignee: Foster Wheeler USA Corporation (John Wood Group PLC)
• Inventors: Malsbury, Allen S.
• Primary Examiner(s): BHAT, NINA NMN
• Application Number:
  US10/887,188
• Publication Number:
  US 20040238408A1
• Time in Patent Office: 1,565 Days
• Field of Search: 202/245, 202/242, 202/244, 202/252, 202/262, 202/269, 201/28
• US Class Current: 201/28
• CPC Class Codes: B01J 2208/00761 Discharging
• CPC Class Codes: B01J 8/003 in a downward flow
• CPC Class Codes: C10B 33/00 Discharging devices; Coke guides
• CPC Class Codes: C10B 33/12 Discharge valves
• CPC Class Codes: C10B 55/00 Coking mineral oils, bitumen, tar, and the like or mixtures thereof with solid carbonaceous material cracking oils C10G

Abstract

An apparatus including a coke drum for coking hydrocarbon substances, a valve disposed near the bottom of the coke drum, and a discharge conduit for removing coke from the coke drum, wherein the discharge conduit is connected to the valve such that when the valve is open, the coke may be removed via the discharge conduit.

Claims

1. A process for repetitively producing and removing coke from a delayed coker vessel, wherein the coker vessel has a bottom portion defining an aperture through which coke is released, said process comprising:

(a) sealing an aperture closure housing to the bottom portion of the coker vessel;

(b) moving a closure member within the closure housing to close the aperture;

(c) feeding a heavy hydrocarbon feed into the coker vessel through a feed line attached to the coker vessel at a side entry position above the bottom of the coker vessel;

(d) coking the heavy hydrocarbon in the coker vessel;

(e) moving the closure member within the closure housing to open the aperture to allow coke removal from the coker vessel;

(f) releasing coke through the aperture; and

(g) repeating steps (b) through (f) successively wherein step (a) further comprises sealing a funnel to the coker vessel bottom and attaching the feed line to the funnel at a side entry position.

2. The process of claim 1, wherein step (a) further comprises sealing a coke chute to the bottom portion of the aperture closure housing.