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US 12,758,899 B2Granted
Polyethylenimine as a new emulsion breaker for quench water systems
AssigneeEcolab USA Inc.
InventorsFabrice Cuoq, Steven Leen
Life of this patent
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Abstract
Methods to increase the efficiency and throughput of hydrocarbon stream cracking by inhibiting the formation of, or resolving an emulsion, in an ethylene production quench water system. The method includes contacting a non-alkoxylated branched or linear polyethylenimine (PEI) with a quench water composition from the quench water system under conditions suitable to prevent the formation of an emulsion or to resolve the quench water composition into two immiscible phases.
Claims14
A quench water composition, comprising:
- a non-alkoxylated branched or linear polyethylenimine (PEI) and water, wherein the PEI is selected from the group consisting of
- and any combination thereof, wherein
- is at least 1;
- R3 is H;
- R1, R2, R4, and R5 are selected from the group consisting of hydrogen (H), CH2CH2NH2, CH2CH2NHCH2CH2NH2, CH2CH2N(CH2CH2NH2)2, CH2CH2NHCH2CH2NH(CH2CH2NH2), CH2CH2NHCH2CH2N(CH2CH2NH2)2, CH2CH2N(CH2CH2NH2)(CH2CH2NHCH2CH2NH2),
- CH2CH2N(CH2CH2NH2)(CH2CH2N(CH2CH2NH2)2),
- CH2CH2N(CH2CH2NHCH2CH2NH2)(CH2CH2N(CH2CH2NH2)2), CH2CH2N(CH2CH2NHCH2CH2NH2)2 and CH2CH2N(CH2CH2N(CH2CH2NH2)2)2;
- and n is at least 1.
5 more elements
Dependencies are inferred from the claim text.