Process for cleaning heat-exchanger surfaces

Process for cleaning heat-exchanger surfaces

In a process for cleaning heat-exchanger surfaces in fluidising apparatuses for the preparation of epsilon -caprolactam by catalytic rearrangement of cyclohexanone oxime in the presence of supported catalysts containing boron trioxide in the fluidised bed, the heat-exchanger surfaces are treated wit...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BRAND,UWE, BUCHAECKERT,HELMUT, FUCHS,HUGO,.DR
Format: Patent
Sprache:eng ; ger
Schlagworte:
BLASTING
CHEMISTRY
CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE ORHEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
HEAT EXCHANGE IN GENERAL
HEATING
HETEROCYCLIC COMPOUNDS
LIGHTING
MECHANICAL ENGINEERING
METALLURGY
ORGANIC CHEMISTRY
WEAPONS
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Beschreibung
Zusammenfassung:In a process for cleaning heat-exchanger surfaces in fluidising apparatuses for the preparation of epsilon -caprolactam by catalytic rearrangement of cyclohexanone oxime in the presence of supported catalysts containing boron trioxide in the fluidised bed, the heat-exchanger surfaces are treated with a pulsed fluidised bed of quartz sand, sintered aluminium oxide and/or glass beads.