Claims
- 1. A method for preventing foulant deposition in an aqueous stream of acrylonitrile stripper bottoms containing organic material produce water-insoluble foulant materials which cause fouling on surfaces of heat exchangers used in the production of acrylonitrile, the method comprising dispersing the water-insoluble foulant into said aqueous stream by addition of from about 0.1 to 10,000 parts per million naphthalene sulfonate formaldehyde condensate having a molecular weight of from about 3000 to about 1 million daltons, to prevent said fouling deposition on the surfaces of said heat exchangers.
- 2. The method of claim 1 wherein the condensate is a salt of sodium, potassium, calcium, ammonium hydroxide, and/or mixtures thereof.
- 3. The method of claim 1 wherein the mixed sodium/potassium salts of naphthalene sulfonate formaldehyde condensate are added to the aqueous stream in the concentration of from about 0.1 to about 1,000 parts per million.
REFERENCE TO RELATED PATENT
The present application is a division of application Ser. No. 08/428,587, filed Apr. 25, 1995 which is a continuation-in-part of application Serial No. 08/238,035 filed Apr. 22, 1994 , now abandoned, by Robert D. McClain entitled "Antifoulant for Acrylonitrile Processing", the disclosure of which is incorporated herein by reference.
US Referenced Citations (5)
Divisions (1)
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Number |
Date |
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Parent |
428587 |
Apr 1995 |
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Continuation in Parts (1)
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238035 |
Apr 1994 |
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