Process for producing caprolactam

Details Process for producing caprolactam Process for producing caprolactam

1976-06-21

1978-02-07

Jiles, Henry R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D20104

Patent

active

040726789

ABSTRACT:
Treatment of process waste waters to be discharged from a lactam manufacturing plant by stepwise concentration in two steps under suitable conditions, extraction of lactam from the concentrate with an organic solvent, oxidative combustion of the extract residue and conversion of sulfur dioxide formed into sulfuric acid can save losses of lactams, organic solvents and sulfur containing compounds to a considerable extent and render the waste waters no longer harmful.

REFERENCES:
patent: 2973355 (1961-02-01), Bauer
patent: 3264060 (1966-08-01), Nieswandt et al.
patent: 3795731 (1974-03-01), Furkert
patent: 3852272 (1974-12-01), De Rooij
patent: 3852273 (1974-12-01), De Rooij
patent: 3954955 (1976-05-01), Furkert
patent: 3992372 (1976-11-01), Gath et al.
patent: 4036830 (1977-07-01), De Rooij et al.

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