Method usable in particular for washing and desorbing solid products containing hydrocarbons
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United States of America Patent
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Jul 7, 1987
Grant Date -
N/A
app pub date -
Jul 3, 1985
filing date -
Jul 4, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and a device usable in particular for washing solid products contaminated by hydrocarbons. According to this method, a desorbent liquid phase is used to wash solid products which are brought into contact with this desorbent liquid phase forming a mixture consisting of solution, desorbed hydrocarbons and washed products. Said mixture, freed from gravel, undergoes at least one separation stage, this separation giving a underflow comprising at least the major part of the washed sand and an overflow from which the hydrocarbons and the aqueous phase are recovered. This method is applicable to de-oiling oil-contaminated sands and gravels.
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