Process for the purification of phenol and phenol formaldehyde c

Details Process for the purification of phenol and phenol formaldehyde c Process for the purification of phenol and phenol formaldehyde c

1977-12-02

1979-06-05

Hart, Charles N.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

210 62, 210 63R, 260702, C02B 114, C02B 136

Patent

active

041573005

ABSTRACT:
Phenol or phenol-formaldehyde containing waste water is purified with chlorine dioxide by treating the waste water with alkali or alkaline earth metal chlorite in the presence of formaldehyde and the weight ratio of formaldehyde to phenol is between 0.5 to 2:1 and the mole ratio of the sum of phenol + formaldehyde to chlorite is between 1:1.2 to 1:2, whereupon the treated water is decolorized, in a given case in known manner.

REFERENCES:
patent: 2323594 (1945-07-01), Hampel
patent: 2367771 (1945-01-01), Hampel
patent: 2430674 (1947-11-01), Hampel
patent: 2430675 (1947-11-01), Hampel
patent: 2452928 (1948-11-01), Hampel
patent: 2452970 (1948-11-01), Vincent
patent: 2452971 (1948-11-01), Vincent
patent: 3386915 (1968-06-01), Rutschi
patent: 3531463 (1970-09-01), Gustafson
patent: 3574052 (1971-04-01), Westerlund
patent: 3617582 (1971-11-01), Lawes
patent: 3635817 (1972-01-01), Zuckerman
patent: 3663467 (1972-05-01), Albright
patent: 3733266 (1973-05-01), Bishop
patent: 4013761 (1977-03-01), Ward
Stepanyan et al., Int. Chem. Eng., vol. 12 (1972) No. 4, pp. 649-651.
J. F. White, Ind. Eng. Chem., vol. 34, Jul. 1942, pp. 782-792.
F. Meinch et al., "Industrie-Abwasser," 4th Ed. (1968), p. 619.
Gesundh. Ing., vol. 81 (1960) pp. 205 et seq.
H. Thieleman, Gesundh. Ing., vol. 92 (1971) No. 10, pp. 295-299.
Chemical Abstracts (1969) vol. 71, 83221s (Klossowski).
Chemical Abstracts (1973) vol. 79, 23266m.
T. Nash, Nature (London) vol. 1970 (1952) p. 976.

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