Mineral oils: processes and products – Chemical conversion of hydrocarbons – With subsequent treatment of products
Reexamination Certificate
2004-12-23
2009-08-18
Griffin, Walter D (Department: 1797)
Mineral oils: processes and products
Chemical conversion of hydrocarbons
With subsequent treatment of products
C208S047000, C208S0480AA, C208S04800Q
Reexamination Certificate
active
07575669
ABSTRACT:
A method for mitigating fouling in a wash unit used in a hydrocarbon cracking process wherein the fouling is due to the presence of polymers and deposits thereof formed by condensation of carbonyl compounds contained within a feed stream of the wash unit. In one embodiment, the invention provides a method of mitigating fouling in a wash unit by introducing into the feed stream an effective amount of an additive including: an inorganic salt of dithionite; and an epsilon caprolactam or a 6-amino caproic acid derivable therefrom. The additive scavenges the carbonyl compounds contained within the feed stream and dissolves deposits of the polymers to thereby mitigate fouling in the wash unit.
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Carroll Rodney B.
Conley & Rose, P.C.
Dorf Ketal Chemicals, LLC
Griffin Walter D
Young Natasha
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