Method for the removal of heat stable amine salts from an amine absorbent
a technology of heat stable amine salts and absorbents, which is applied in the direction of fluid pressure measurement, liquid/fluent solid measurement, peptides, etc., can solve the problems of significant amine loss through the reclamation waste stream, and the detrimental effect of cosub>2/sub>in the amine absorbent of the separation process
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Amine Loss into the Waste Brine Stream of the Electrodialysis Unit
[0073]Amine losses from a lean amine absorbent into the waste brine of a 3-loop ElectroSep electrodialysis unit (ElectroSep Inc., USA) was evaluated with various CO2 loadings in the lean amine absorbent. 1.2 and 1.4 wt % amine was observed in the waste brine stream when the lean amine absorbent had CO2 loadings of 2.2 and 2.9 wt % CO2, respectively. Only 0.3 wt % amine was observed in the waste brine stream with 0.01 wt % CO2 in the lean amine absorbent. This represents a 75-80% reduction in amine losses compared to the higher lean loadings. This example shows that a significant reduction of amine losses can be achieved by reduction of the CO2 loading of the lean amine absorbent, e.g. by stipping or flashing, prior to feeding it to a reclaimer unit, such as a electrodialysis unit.
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