Back to results
US 4,786,488 AGranted
Process for the purification of hydrochloric acids
AssigneeChemische Werke Huls Aktiengesellschaft
InventorGerhard Sticken
Life of this patent
Estimating the term…
Abstract
A process for the purification of hydrochloric acids contaminated with C.sub.1 -chlorinated hydrocarbons involves the controlled use of a distillator column. The contaminants are removed by stripping with HCl gas, the stripping being performed in a bubble column.
Claims10
A process for the purification of hydrochloric acid which is contaminated by chlorinated hydrocarbons containing a single carbon atom by stripping with HCl gas, characterized in that the stripping is conducted in a column operating as a bubble column;
- the column being flooded with the hydrochloric acid and the HCl gas for stripping the chlorinated hydrocarbons being generated by heating the hydrochloric acid to a boiling temperature in the sump of the column, said HCl stripping gas passing upwardly through the bubble column before exiting as overhead together with the chlorinated hydrocarbons.
Dependencies are inferred from the claim text.