Heat treatment of exchangers to remove coke
Patent
·
OSTI ID:7017203
This patent describes a process for preparing furfural coke for removal from metallic surfaces. It comprises: heating the furfural coke without causing an evolution of heat capable of undesirably altering metallurgical properties of the surfaces in the presence of a gas containing molecular oxygen at a sufficient temperature below 800{degrees}F (427{degrees}C) for a sufficient time to change the crush strength of the coke so as to permit removal with a water jet at a pressure of five thousand pounds per square inch.
- Assignee:
- Ashland Oil, Inc., Ashland, KY
- Patent Number(s):
- US 4902403; A
- Application Number:
- PPN: US 7-262182A
- OSTI ID:
- 7017203
- Resource Relation:
- Patent File Date: 20 Oct 1988
- Country of Publication:
- United States
- Language:
- English
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