Cleaning and liquid contact with solids – Processes – Including melting
Patent
1994-09-13
1997-04-22
Silbaugh, Jan H.
Cleaning and liquid contact with solids
Processes
Including melting
134 2, 134 6, 134 8, 134 19, 134 2211, 134 2212, 134 2219, 134 23, 134 24, 134 34, 134 35, 134 36, 134 40, B08B 700, C23G 100
Patent
active
056225709
ABSTRACT:
A process for removing accumulated meltable matter from a pipe includes introducing inside a pipe a cylindrical travelling element or pig made of low density, high elasticity foam. A mixture of reagents which, after a certain period of time will cause a highly exothermic reaction to occur, is introduced inside the pig so that by displacing the pig the meltable deposits within the pipe will melt and will be carried by the pig to a place from which they will be removed together with the pig.
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Lima Paulo Cesar R.
Lobato Carmem Silvia D. D.
Saliba Carlos Alberto
Gray Robin S.
Petroleo Brasileiro S.A. - Petrobras
Silbaugh Jan H.
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