105-final-new inventions for extending the service life of ......new inventions for extending the...
TRANSCRIPT
New Inventions for Extending The
Service Life of Coke Drums
Mahmod Samman, Ph.D., P.E.
Houston Engineering Solutions, LLC
(+1) 832-512-0109
RefComm
Galveston 2016
www.hes.us.com
Overview
Three issued and pending HES patents in last
two years aimed at mitigating or minimizing
classic coke drum failures:
• Non-welded skirt attachment
• Non-bolted skirt anchors
• Fatigue-resistant shell
2
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Non-welded skirt attachment
3
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Skirt Attachment Cracking
4
API 1996 Survey
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HES Tongue-and-Groove Skirt
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6www.hes.us.com
Status
6
• Precedents:
– Sliding skirt 2002 (24+ drums in operation)
– Retrofit 2011 - in operation
– Undocumented set 30+ years in operation
• Being implemented
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Non-bolted skirt anchors
7
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Skirt Bolt failures
8
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HES Clearance-Restraint Anchors
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10www.hes.us.com
Status
10
• Not aware of any precedents
• Being implemented
www.hes.us.com
Fatigue-resistant shell
11
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Seam Bulging
12
Weil & Rapasky 1958
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HES Staggered-Seam Shell
13
14www.hes.us.com
Status
14
• Not aware of any precedents
• No pending implementation
www.hes.us.com
Summary
Three issued and pending HES patents in last
two years aimed at mitigating or minimizing
classic coke drum failures:
• Tongue-and-Groove skirt attachment
– Being implemented
• Clearance-Restraint skirt anchors
– Being implemented
• Staggered-Seam shell design
15