[12] Patent
[11] Patent No.:GC0007657  
[45] Date of Publishing the Grant of the Patent: 30/Apr /2018                48/2018  
Number of the Decision to Grant the Patent:2018/126537
Date of the Decision to Grant the Patent:26/Apr/2018

[21] Application No.:GC 2013-24987

[22] Filing Date:18/7/2013

[30] Priority:

[33] State [32] Priority date [31] Priority No.

[72] Inventors:1- Stephen De HaanŲŒ2- Peter Kin-Lee TAM

[73] Owner: Lummus Technology Inc., 1515 Broad Street, New Jersey 07003-3096, Bloomfield, USA

[74] Agent: Abu-Gazaleh Intellectual Property L.L.C




Int. Cl.: C10G 75/00, 9/16 (2006.01)

[56] Cited Documents:

-US 2009-0114567 A1 (MAXWELL, J. F.) 07 May 2009
-US 2007-0108036 A1 (SISKIN, M. et al.) 17 May 2007
-US 2011-0226667 A1 (LOTT, R. K. et al.) 22 September 2011
-US 2005-0261532 A1 (STELL, R. C. et al.) 24 November 2005
-US 5922192 A (ZIMMERMANN, G. et al.) 13 July 1999
Examiner: Faisal Abdulla Aljardan

[57] Abstract: The present disclosure provides for processes including a coke catcher that may be emptied during normal operation or steam standby, thereby overcoming the deficiencies in the prior design as discussed above, the coke catchers and process flows disclosed herein protecting the secondary transfer line exchanger from foulant while not limiting the time between heater cold shutdowns. The designs consider the impact of decoking options, such as when decoking to a firebox as opposed to a decoking drum. Further, flow and cost considerations are addressed in various embodiments; for example, decoke valves are fairly expensive, and process flows disclosed herein may provide for relocation of the decoke valve to facilitate coke catcher operations while not adding an expensive valve to the overall operating flow scheme.
No. of claims: 19     No. of figures: 6


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