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US 11,786,893 B2Granted
Solvent system for cleaning fixed bed reactor catalyst in situ
AssigneeUnited Laboratories International, LLC
InventorsStephen D. Matza, Elisa Rice
Life of this patent
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Abstract
A method of equipment decontamination may include: introducing a cleaning stream comprising hydrogen and a solvent comprising a fatty acid methyl ester and an oxygenated solvent into the equipment; and introducing a stream comprising nitrogen into the equipment, wherein the equipment comprises deposits and other contaminants.
Claims20
A method of equipment decontamination comprising:
- introducing a cleaning stream comprising hydrogen and a solvent comprising a fatty acid methyl ester and an oxygenated solvent into the equipment;
- and
- introducing a stream comprising nitrogen into the equipment, wherein the equipment comprises deposits.
A method comprising:
- introducing a stream comprising hydrogen into a reactor, wherein the reactor comprises a catalyst, deposits on the catalyst, and other contaminants;
- introducing into the stream comprising hydrogen a solvent stream comprising a fatty acid methyl ester and an oxygenated solvent and vaporizing the solvent stream into the stream comprising hydrogen to produce a cleaning stream;
- contacting the deposits with the cleaning stream and removing at least a portion of the deposits and/or other contaminants with the cleaning stream;
- and
- introducing a nitrogen stream into the reactor.
2 more elements
Dependencies are inferred from the claim text.