C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/612.9
C07C 201/16 (2006.01) C02F 1/26 (2006.01) C02F 11/06 (2006.01) C07C 205/21 (2006.01)
Patent
CA 1316942
PROCESS FOR EXTRACTING AND DISPOSING OF NITROPHENOLIC BY-PRODUCTS ABSTRACT OF THE DISCLOSURE A process for treating nitrophenolic by-products contained in nitration waste water including the steps of solvent extraction, solvent and nitrophenolic residue recov- ery by distillation, and incineration of the nitrophenolic residue is disclosed. The extraction process involves the extraction of the nitrophenolic by products from the nitra- tion waste water utilizing a solvent in the presence of an acid at an elevated temperature and acidic pH. The extrac- tion produces a nitrophenolic solvent solution which is sub- jected to distillation to recover the solvent for reuse and produce a residue containing the nitrophenolic materials. The residue can be disposed of by incineration.
610961
Adams Earl George
Barker Robert Bridges
Finlayson & Singlehurst
First Chemical Corporation
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