METHOD FOR SEALING LEAKAGE ACROSS VALVES IN A SULFUR RECOVERY PLANT

METHOD FOR SEALING LEAKAGE ACROSS VALVES IN A SULFUR RECOVERY PLANT

An improved method for reducing the sulfur losses associated with leakage across closed valves in a Claus type sulfur recovery plant involving the recirculating of low sulfur content Claus tail gas to the high pressure side of the closed valves. This improved method for compensating for leakage acro...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: KUNKEL, LORENZ V
Format: Patent
Sprache:eng ; fre
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Beschreibung
Zusammenfassung:An improved method for reducing the sulfur losses associated with leakage across closed valves in a Claus type sulfur recovery plant involving the recirculating of low sulfur content Claus tail gas to the high pressure side of the closed valves. This improved method for compensating for leakage across a closed valve is particularly useful in sealing a valve in the so-called Cold Bed Adsorption plant. Thus, allowing a conventional carbon steel valve of an undercut design to be used at a temperature range from under 250.degree.F to over 650.degree.F while meeting contemporary emission standards.