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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Moving to above-ground Sx Sealing
Stefaan Gouhie
CSI Ametek+33 6 70 61 73 28
SxSeal 2000
™
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Sulfur Sealing in the SRU
Maintain bulk temperature
Maintain wall temperature
Sulfur
Seal
Sulfur
Seal
Sulfur
Seal
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Traditional solution: Seal leg
– 20+ ft. below-grade
sulfur seal
– Jacketed piping
heating technology
• Sealing mechanism
operates on
hydrostatic pressure
• Liquid sulfur creates a
vapor seal
Liquid sulfur
Liquid sulfur
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Seal leg - Benefits
• Supplemental pressure
relief
• Long maintenance
interval
Liquid sulfur
Liquid sulfur
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Seal leg: Prone to plugging
• Debris collects at the
bottom of the seal leg
• Plugging can also
occur at startup
• Costly maintenance
X
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Seal leg: Other potential issues
• Ground-water intrusion
• What happens if plant wants to increase pressure?
• Operation status confirmed via look box
• Crane needed for installation and removal
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Look Box Safety
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Seal Leg Safety
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Seal Leg Safety
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Safety Issues Seal Leg
• Exposure to H2S vapors
• Burns from liquid sulphur
• Mess created in SRU
• How Serious?
– “This area is the most dangerous in the SRU”
• 40 Year SRU Veteran, Brimstone Vail 2013
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Sulfur sealing optionsIn-ground
Above-ground
1000
Seal Leg
2000
SxSeal ™
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
No-flow condition
H2S
Sx Vapor
Liquid
sulfur
SxSeal 1000 in operation
Liquid sulfur
™
H2S
Sx Vapor
Liquid
sulfur
Flowing condition
Liquid sulfur
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Requires regular maintenance
• Need for fresh air suit?
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Safety Issues SxSeal 1000
• Regular Maintenance
• Exposure to H2S vapors
• Exposure to liquid Sulphur
• No pressure relief path
– Rupture disk
• Still need for lookbox
H2S
Sx Vapor
Liquid
sulfur
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
SxSeal 2000
™
• Best of both
worlds in sulfur
sealing technology
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
SxSeal 2000 in operation
™
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Construction and Components
Orifice plate
Plug
Orifice
Lift Handles
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Operating status indicators
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Operating status indicators
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Low maintenance
• Debris can be
cleared during
turnaround.
• Built-in clean out
facilitates quick,
easy maintenance.
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Easy retrofit
• Minimal elevation difference between inlet & outlet
• Facilitates retrofit
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Heated with ControTrace
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Summary of benefits
• Safe, visual confirmation of
performance – no look box
required
• No filter maintenance
• Online cleaning possible
• No water intrusion, cross-
contamination, or plugging
• Supplemental relief path
SxSeal 2000™
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE™
SxSeal 2000 – 200+ in operation
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
26
Video
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CLEAR VISION │ SOUND STRATEGIES │ SOLID PERFORMANCE
Questions?