Antifoulant for acrylonitrile purification

Details Antifoulant for acrylonitrile purification Antifoulant for acrylonitrile purification

1997-04-15

1998-05-05

McCarthy, Neil

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

526 75, 558462, 558463, C02F 510

Patent

active

057469245

ABSTRACT:
The invention comprises a method of inhibiting the formation of foulants and residues, gums and precipitates, polymeric tars and other highly oxidized carbonaceous tars which can be formed in the process of manufacture and recovery of acrylonitrile. The method comprises adding to the liquid or gaseous phases passing through, or stored in acrylonitrile process equipment, an effective antifouling amount of a dispersant which is stable in the environment within an acrylonitrile process and is neutral to the equipment used for the manufacture of acrylonitrile.

REFERENCES:
patent: 3876508 (1975-04-01), Bonnema et al.
patent: 4264476 (1981-04-01), Umemura et al.
patent: 4278614 (1981-07-01), Umemura et al.
patent: 4545943 (1985-10-01), Innes et al.
patent: 4609502 (1986-09-01), Khoobiar et al.
patent: 4902824 (1990-02-01), Syrinek
patent: 5091093 (1992-02-01), Herwig et al.

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