Method for the removal of at least one contaminant from an aqueous liquor or a gas

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 spiralling 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.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from patent application number 19158786.4 filed in Europe on February 22, 2019, the entire content of which is hereby incorporated by reference for all purposes. technical field [0003] The present invention relates to a method for removing pollutants from aqueous liquids or gases, and more particularly to a method for removing pollutants such as sulfur dioxide (SO x ), organic, non-metallic and / or metallic) methods. Background technique [0004] Fossil fuels contain sulfur which forms gaseous sulfur oxides SO during combustion x . SO in fuel exhaust x The amount varies according to natural differences in the sulfur content of the fuel. of SO from fossil fuel combustion x More than 95% of the emissions are dominated by sulfur dioxide, SO 2 . SO 2 is a poisonous gas, directly harmful to both fauna and flora. SO 2 A secondary effect of the emissions on the atmosphere is the for...

AI Technical Summary

Problems solved by technology

[0019] However, in the use of concentrated solutions of hydratable solid alkaline materials in water like soda ash as the motive fluid to transport such solids, or using water as the motive fluid to transport hydratable solid alkaline agents (e.g., soda ash ) test, the throat of the injector or the injector itself may quickly become clogged with hydrates requiring frequent cleaning

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