公开(公告)号：US20220081334A1

公开(公告)日：2022-03-17

申请号：US17426645

申请日：2020-02-20

Applicant: SOLVAY SA

Inventor： Eric COUDRY ,  Sabrina BEDEL ,  Perrine DAVOINE ,  Thierry DELPLANCHE

IPC: C02F1/68 ,  C02F1/66 ,  B01D53/92 ,  F01N3/08 ,  B01F3/12 ,  B01F5/00 ,  B01F5/04

Abstract: A method for the removal of at least one contaminant from an aqueous liquor or a gas, comprising: preparing a solution or slurry of a solid alkali reagent by supplying a solid alkali reagent into a pre-wetting chamber via a feed pipe; supplying a liquid via two or more liquid sidestreams, each through a liquid inlet positioned on a side wall of the chamber to allow the liquid sidestreams to wash an internal wall of a frusto-conical section of the chamber and flow, preferably tangentially onto the internal wall in a downward spiraling manner thereby forming a vortex, towards a fluid outlet of the chamber and to further wet the solid alkali reagent with the supplied liquid thereby forming a pre-wetted reagent; and flowing a stream though a conduit, thereby creating a suction by the eductor to draw the pre-wetted reagent out of the chamber fluid outlet and mixing it with the stream to form a slurry or solution; and directing the slurry or solution exiting the eductor to an aqueous liquor or gas treatment unit, removing at least a portion of the contaminant from the aqueous liquor or gas in the treatment unit.