Method for the removal and inhibition of metal scale formation i

Details Method for the removal and inhibition of metal scale formation i Method for the removal and inhibition of metal scale formation i

1974-04-19

1976-09-21

Wolk, Morris O.

Cleaning and liquid contact with solids

Processes

For metallic, siliceous, or calcareous basework, including...

21 25R, 21 25B, 134 31, 148 16, 148 206, 208 47, 252 87, C23F 902, C23F 1116, C23F 1402

Patent

active

039817407

ABSTRACT:
A method for the inhibition of metal scale formation in a hydrocarbon processing unit prior to catalyst loading and start-up comprising the steps: circulating a gas comprising a sulfiding component; heating the hydrocarbon conversion zone to at least hydrocarbon conversion temperature; and, collecting loosely bound metal scale until scale production abates. The recurring problem of catalyst bed inlet plugging is solved by removing indigenous metal scale, dust and debris and by passivating the virgin metallic surfaces before the initial start-up of a hydrocarbon processing unit.

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