(111f) Safe Molecular Sieve Decommissioning & Unloading Process
AIChE Spring Meeting and Global Congress on Process Safety
2013
2013 Spring Meeting & 9th Global Congress on Process Safety
The 25th Ethylene Producers’ Conference
Ethylene Unit Safety Session
Wednesday, May 1, 2013 - 10:10am to 10:32am
Unloading the spent molecular sieve from the Primary Dryers in the Q-Chem Ethylene unit is a higher risk task that requires proper understanding of and handling during any shutdown period. Q-Chem has two Primary Dryers that each can hold a total of 95,000 KG of Molecular Sieve. The molecular sieve material is very reactive with moisture and can generate excess heat that can exhibit a significant safety threat to humans dealing with it directly. At the time of the February 2012 Turnaround, Q-Chem had not yet replaced these beds since commissioning (about 9 years operation).
This paper discusses Q-Chem’s approved experience in handling and unloading the spent molecular sieve safely from the dryer without impacting the equipment. The deactivation and unloading process will be explained thoroughly here with the time line and various process parameters controlled.
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Individuals
2013 Spring Meeting & 9th Global Congress on Process Safety
AIChE Pro Members | $150.00 |
AIChE Graduate Student Members | Free |
AIChE Undergraduate Student Members | Free |
AIChE Explorer Members | $225.00 |
Non-Members | $225.00 |
The 25th Ethylene Producers’ Conference only
AIChE Pro Members | $100.00 |
Fuels and Petrochemicals Division Members | Free |
AIChE Graduate Student Members | Free |
AIChE Undergraduate Student Members | Free |
AIChE Explorer Members | $150.00 |
Non-Members | $150.00 |