The liquid is collected to the bottom of the column and it undergoes evaporation through a reboiler, while the gas is collected to the top and it undergoes condensation through a condenser.
12.
The resultant " rich " amine is then routed into the regenerator ( a stripper with a reboiler ) to produce regenerated or " lean " amine that is recycled for reuse in the absorber.
13.
The overhead stream may be cooled and condensed using a water-cooled or air-cooled bottoms reboiler may be a steam-heated or hot oil-heated heat exchanger, or even a gas or oil-fired furnace.
14.
To conserve energy and cooling capacity in chemical and other plants, regenerative heat exchangers can transfer heat from a stream that must be cooled to another stream that must be heated, such as distillate cooling and reboiler feed pre-heating.
15.
In the Boundary Dam plant, emissions increased when CO 2 loading of lean amine increased for the blend and MEA . However, decreasing the lean loading increases the reboiler heat duty, which results in an obvious tradeoff between emissions and heat duty or energy costs.
16.
If a dynamic system similar to Gronowski's is used, in the nearly 30 minutes of start-up time saved over a reboiler method, the typical combined cycle plant will generate even more income from the same fuel consumed with each and every system start, especially using typical peak electricity pricing.
17.
Common enhanced methods include the use of stripping gas, the use of a vacuum system ( lowering the entire stripper pressure ), the DRIZO process, which is similar to the use of stripping gas but uses a recoverable hydrocarbon solvent, and the Coldfinger process where the vapors in the reboiler are partially condensed and drawn out separately from the bulk liquid.
