Defoamer composition, method for making a defoamer composition, and method for defoaming an industrial process stream
AssigneeKemira Oyj
InventorYong Zou
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Abstract
A defoamer composition, method for making the defoamer emulsion, and a method for defoaming an industrial process steam. The defoamer composition comprises a microcrystalline wax and a long chain fatty alcohol in an aqueous emulsion. The defoaming compositions may be used effectively and efficiently in relatively high temperature industrial process streams.
Claims30
A defoamer composition comprising:
- an aqueous phase;
- and
- an organic phase emulsified in the aqueous phase and comprising at least one microcrystalline wax and at least one long chain fatty alcohol, the microcrystalline wax having a melting point of at least about 83° C. and the at least one long chain fatty alcohol having a carbon chain length of C22 or more and a melting point of at least about 62° C.
A method of defoaming in an industrial process stream comprising the step of adding to the industrial process stream a defoamer composition in an amount effective to defoam or prevent foaming in the industrial process stream, the defoamer composition comprising:
- an aqueous phase;
- and
- an organic phase emulsified in the aqueous phase and comprising at least one microcrystalline wax and at least one long chain fatty alcohol, the microcrystalline wax having a melting point of at least about 83° C. and the at least one long chain fatty alcohol having a carbon chain length of C22 or more and a melting point of at least about 62° C.
A method of making a defoamer composition in an amount effective to defoam or prevent foaming in the industrial process stream, the method comprising the steps of:
- heating a mixture comprising water, at least one microcrystalline wax, and at least one long chain fatty alcohol sufficiently to liquefy any solids, the microcrystalline wax having a melting point of at least about 83° ° C. and the at least one long chain fatty alcohol having a carbon chain length of C22 or more and a melting point of at least about 62° C.;
- adding at least one emulsifier and at least one surfactant to the mixture;
- and
- homogenizing the mixture to form an emulsion comprising an organic phase emulsified into an aqueous phase.
Dependencies are inferred from the claim text.