Piperazine/N-methylpiperazine/N,N’-dimethylpiperazine as an Aqueous Solvent for Carbon Dioxide Capture
A blend of piperazine (PZ), N-methylpiperazine (MPZ) and N,N’-dimethylpiperazine (DMPZ) is described as a novel CO2 capture solvent for aqueous absorption-stripping. This blend provides improved solid solubility and heat of absorption compared to concentrated PZ. No insolubility was observed fo...
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2014-09-01
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Online Access: | http://dx.doi.org/10.2516/ogst/2012089 |
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doaj-6b0262b18f95469eb088b68234b326a12021-04-02T06:58:19ZengEDP SciencesOil & Gas Science and Technology1294-44751953-81892014-09-0169590391410.2516/ogst/2012089ogst120016Piperazine/N-methylpiperazine/N,N’-dimethylpiperazine as an Aqueous Solvent for Carbon Dioxide CaptureFreeman Stephanie A.Chen XiNguyen ThuRafique HumeraXu QingRochelle Gary T. A blend of piperazine (PZ), N-methylpiperazine (MPZ) and N,N’-dimethylpiperazine (DMPZ) is described as a novel CO2 capture solvent for aqueous absorption-stripping. This blend provides improved solid solubility and heat of absorption compared to concentrated PZ. No insolubility was observed for regions of high CO2 loading, unlike PZ solvents. The blend performed like concentrated PZ in terms of CO2 capacity and CO2 absorption rate, both of which were more than double that of a traditional 7 molal (30 wt%) MonoEthanolAmine (MEA). Thermal equilibrium was established between the three constituent amines that increases the thermal stability compared to traditional blended solvents. The primary drawback of this novel solvent system is enhanced amine volatility at absorber conditions compared with both concentrated PZ and MEA. http://dx.doi.org/10.2516/ogst/2012089 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Freeman Stephanie A. Chen Xi Nguyen Thu Rafique Humera Xu Qing Rochelle Gary T. |
spellingShingle |
Freeman Stephanie A. Chen Xi Nguyen Thu Rafique Humera Xu Qing Rochelle Gary T. Piperazine/N-methylpiperazine/N,N’-dimethylpiperazine as an Aqueous Solvent for Carbon Dioxide Capture Oil & Gas Science and Technology |
author_facet |
Freeman Stephanie A. Chen Xi Nguyen Thu Rafique Humera Xu Qing Rochelle Gary T. |
author_sort |
Freeman Stephanie A. |
title |
Piperazine/N-methylpiperazine/N,N’-dimethylpiperazine as an Aqueous Solvent for Carbon Dioxide Capture |
title_short |
Piperazine/N-methylpiperazine/N,N’-dimethylpiperazine as an Aqueous Solvent for Carbon Dioxide Capture |
title_full |
Piperazine/N-methylpiperazine/N,N’-dimethylpiperazine as an Aqueous Solvent for Carbon Dioxide Capture |
title_fullStr |
Piperazine/N-methylpiperazine/N,N’-dimethylpiperazine as an Aqueous Solvent for Carbon Dioxide Capture |
title_full_unstemmed |
Piperazine/N-methylpiperazine/N,N’-dimethylpiperazine as an Aqueous Solvent for Carbon Dioxide Capture |
title_sort |
piperazine/n-methylpiperazine/n,n’-dimethylpiperazine as an aqueous solvent for carbon dioxide capture |
publisher |
EDP Sciences |
series |
Oil & Gas Science and Technology |
issn |
1294-4475 1953-8189 |
publishDate |
2014-09-01 |
description |
A blend of piperazine (PZ), N-methylpiperazine (MPZ) and N,N’-dimethylpiperazine (DMPZ) is described as a novel CO2 capture solvent for aqueous absorption-stripping. This blend provides improved solid solubility and heat of absorption compared to concentrated PZ. No insolubility was observed for regions of high CO2 loading, unlike PZ solvents. The blend performed like concentrated PZ in terms of CO2 capacity and CO2 absorption rate, both of which were more than double that of a traditional 7 molal (30 wt%) MonoEthanolAmine (MEA). Thermal equilibrium was established between the three constituent amines that increases the thermal stability compared to traditional blended solvents. The primary drawback of this novel solvent system is enhanced amine volatility at absorber conditions compared with both concentrated PZ and MEA.
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url |
http://dx.doi.org/10.2516/ogst/2012089 |
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