Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1975-10-02
1977-05-31
Spear, Jr., Frank A.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
260621A, 260627R, C07C 3724
Patent
active
040267911
ABSTRACT:
In the process of producing phenol from cumene, aqueous waste streams result which are contaminated with organic materials, particularly phenol, which are made innocuous to the environment only with substantial difficulty. A process is described to reduce the biological oxygen demand of these aqueous wastes, particularly the phenol content, by a liquid extraction step whereby a highly aromatic fraction of an organic waste stream in the phenol process is used as the solvent. The process includes provision for simultaneous preparation and recovery of the solvent as well as recovery of the phenol.
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Crady C. W.
Mukai R. G.
Myers Kurt S.
Pullman Incorporated
Spear, Jr. Frank A.
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