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Patent

Apparatus for cleaning waste flue gases

TLDR
In this paper, a spray tower is used for cleaning waste flue gas, where a reactant solution is sprayed into a waste gas, and the water contained in the droplets is vaporized and the reaction products are dried into solid particles by the sensible heat of said flue gases.
Abstract
A waste flue gas cleaning method and an apparatus for practicing said method, in which a reactant solution is sprayed into a waste flue gas introduced into a spray tower, whereby a toxic component in the flue gas is caused to be absorbed in and react with the droplets of the sprayed reactant solution, and the water contained in the droplets is vaporized and the reaction products are dried into solid particles by the sensible heat of said flue gas. A series of the above operation is accomplished within the spray tower while maintaining the outlet gas temperature always above the dew point of the flue gas, and the solid particles of the reaction products are removed from the flue gas by an after dust collector.

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Flue gas desulfurization process

TL;DR: In this paper, a wet, calcium-based desulfurization process for reliably and cost effectively removing sulfur dioxide from the flue gas generated by the combustion of fossil flues containing sulfur is described.
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A method and an equipment for reducing the sulphur dioxide emissions of a marine enigne

TL;DR: In this paper, a method and an equipment for reducing sulphur dioxide emissions of a marine engine is presented, wherein flue gases are scrubbed with a scrubbing solution in a scrubber.
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System and method for removing hydrogen sulfide from a natural gas stream

TL;DR: In this article, a refining system for refining a feed gas comprising hydrocarbons and hydrogen sulfide having a first concentration of H2S using a separation process for H2s removal is described.
References
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Patent

Removal of so2 from flue gases

TL;DR: In this article, the treatment of flue gases and the like containing obnoxious or disagreeable substances, with the object of removing these substances before discharging the gases into the atmosphere, so as to render the gases substantially innocuous or such as not to constitute...
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Process of treating gases from aluminum furnaces

Weber Julius
TL;DR: In the production of aluminium according to the usual method of today (electrolysis of dissolved alumina in a fluoride melt) gases are evolved which carry with them some flue-dust.