The absorbing tower has a first absorbing unit and a second absorbing unit, and gas is supplied to the second absorbing unit through the first absorbing unit.

A discharge pipe (11) is connected to the adsorption tower (6) located most downstream of the adsorption unit (5).

Upon CO2 release, the regenerated lean solution can be recycled to the sorption tower.

An adsorption tower (6) located most upstream of an adsorption unit (5) is connected to the colloid removal unit (3) by a connection pipe (9).

The use of a turbulent contactor to absorb a selected gas component from a gas stream.

The bottom stream from the first absorption tower is then sent to an intermediate ethylene recovery tower where crude ethylene is purified, and the overhead ethylene stream being sent to the ethylene purification tower.

A seawater flue-gas desulfurization device provided with an absorption tower (1) and an oxidation tank (14).

A first absorption tower uses n-butane as a solvent to absorb both the ethane and ethylene, allowing for inert gasses to be removed from the stream.

The method comprises passing the residual gases leaving the absorption tower, through a two-stage combination before introduction into the residual gas turbine.

Provided is an exhaust gas treatment device capable of treating a large flow of exhaust gas while the diameter of each absorption tower is restricted.

In a process for preparing nitric acid, nitrogen oxides are first generated in an ammonia combustion plant (2), and these are then supplied to at least one absorption tower (4, 5).

The stream (250) is mixed with other Br2 streams (224) and (234) for further treatment in counter-current absorption tower (256) producing a Br2 product stream (258).

Heat is exchanged in the heat exchanger (22), between process-condensed water discharged from the CO2 absorption tower (11) and steam-condensed water discharged from the reboiler (21).