A novel blend of piperazine (PZ) with N-(2-aminoethyl) piperazine (AEP) has been proposed as a superior solvent for CO2 capture from coal-fired flue gas. Blending PZ with AEP can remediate the precipitation issue of concentrated PZ while maintaining its high CO2 absorption rate, and high resistance to degradation. Although PZ/AEP has a lower CO2 capacity than concentrated piperazine, its higher heat of absorption may offset the negative effect on energy consumption. PZ/AEP also shows a milder nitrosamine issue than concentrated piperazine. A novel method for synthesizing AEP using PZ and monoethanolamine (MEA) was also developed to lower the solvent cost in industry application.
|Original language||English (US)|
|Number of pages||18|
|State||Published - Jan 1 2013|
|Event||11th International Conference on Greenhouse Gas Control Technologies, GHGT 2012 - Kyoto, Japan|
Duration: Nov 18 2012 → Nov 22 2012
- Solvent blend
ASJC Scopus subject areas