Distillation: processes – separatory – Plural distillations performed on same material – Distillation of initial distillate
Patent
1992-08-20
1994-03-22
Bascomb, Jr., Wilbur
Distillation: processes, separatory
Plural distillations performed on same material
Distillation of initial distillate
203 12, 203 96, 203DIG19, 202153, 202158, 423588, B01D 314
Patent
active
052961044
ABSTRACT:
Process for obtaining purified hydrogen peroxide solutions, consisting in evaporating the crude aqueous hydrogen peroxide solution containing the impurities and feeding by means of the vapour phase produced the foot of a distillation column provided in its lower part with a zone for washing the vapour phase with a small flow of liquid which refluxes in the bottom of the column and which has the same composition as the purified aqueous hydrogen peroxide solution forming the product leaving the column, in drawing off this purified product at a column height such that the draw-off is carried out above the vapour phase washing zone and in collecting at the bottom of the column a residue consisting of the small flow of washing liquid which contains most of the impurities. The washing zone has a diameter which is greater than that of the remainder of the column.
Distillation column for carrying out the process.
REFERENCES:
patent: 358196 (1887-02-01), Gruneberg et al.
patent: 3094401 (1963-06-01), Lidell
patent: 3152052 (1964-10-01), Jenney et al.
patent: 3714342 (1973-01-01), Kabisch
patent: 5171407 (1992-12-01), Meili
Glinos Konstantin
Signorini Lido
Bascomb, Jr. Wilbur
Interox International (Societe Anonyme)
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