Patent ID: 7575669
Filing Date: 2009-08-18
Classification: C10G,Y02P

Abstract:
1. A method for mitigating fouling in a wash unit used in a hydrocarbon cracking process wherein said fouling is due to the presence of polymers and deposits thereof formed by condensation of carbonyl compounds contained within a feed stream of said wash unit under alkaline conditions, the method comprising the step of: introducing into said feed stream an effective amount of an additive consisting of: wherein said effective amount of additive inhibits formation of polymers of carbonyl compounds, and dissolves the polymers which are formed in spite of the inhibitory action; dissolves the polymers that exist in a caustic scrubber, and reacts with non-polymerized carbonyl compounds, low molecular weight species; high molecular weight carbonyl polymers to form the compound which is soluble in the caustic solution to thereby mitigate fouling in the wash unit, wherein said inorganic salt of dithionite and 6-amino caproic acid are blended, and wherein said additive scavenges the carbonyl compounds under alkaline conditions.