Method for prevention of fouling in basic solution by inhibiting polymerization and solubilizing deposits using amino acids
AssigneeDorf Ketal Chemicals (1) PVT Ltd.
InventorsMahesh Subramaniyam, Bankar Prashant
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Abstract
A method for inhibiting and dissolving the deposits formed on caustic or alkaline scrubbers used in scrubbing acidic gases such as carbon dioxide, hydrogen sulfide, which are formed during the pyrolytic cracking of naphtha, ethane, and propane. The cracking operations produce certain oxygenated compounds such as vinyl acetate or acetaldehyde, which undergo polymerization under alkaline condition. The vinyl acetate on hydrolysis releases acetaldehyde under alkaline conditions. Amino acids such as 6 amino caproic acid and lactams such as epsilon caprolactam not only prevent but also dissolve the polymers formed by aldol condensation.
Claims36
A method for inhibiting and dissolving polymeric deposits on the internal surfaces of a caustic wash system, the deposits resulting from polymerization of at least one component of a feed stream, comprising adding to the feed stream an additive comprising an amount of an amino acid effective to inhibit polymerization and dissolve deposits.
The method of claim1 wherein the pH of the caustic wash system is greater than 7.
A method for inhibiting and dissolving polymeric deposits on the internal surfaces of a caustic wash system, the deposits resulting from polymerization of at least one component of a feed stream, comprising adding to the feed stream an additive comprising an amount of a lactam, sultam acid, or isomer thereof effective to inhibit polymerization and dissolve deposits.
Dependencies are inferred from the claim text.