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Title: Solvent Degradation and Emissions from a 0.7MWe Pilot CO 2 Capture System with Two-stage Stripping

Abstract

The UKy-CAER team successfully tested an advanced 0.7 MWe post-combustion CO 2 capture system on a coal-fired power plant using a heat integration process combined with two-stage stripping to enhance the CO 2 absorber performance. One of the unique feature of the UKy-CAER integrated process is a two-stage stripping unit for solvent regeneration. The secondary stripper is empowered by the heat rejection from a conventional steam-heated (primary) stripper. The secondary stripper outlet stream at the commercial scale can be used as boiler secondary combustion air, consequently enriching the flue gas with CO 2, resulting in less energy penalty required by the CO2 capture system. The primary goal of this study was to form an initial assessment of the impact on the amine solvent from coal combustion flue gas contaminants and the potential higher oxygen content in the solvent due to incorporation of the secondary air stripper into the conventional amine scrubber/stripper system. The overall oxidative degradation was comparable to previous reports with 30 wt% MEA solvent at similar flue gas run hours. This suggests that the addition of the secondary air stripper appears to be negligible with regards to solvent oxidation.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Univ. of Kentucky, Lexington, KY (United States)
Publication Date:
Research Org.:
Univ. of Kentucky, Lexington, KY (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1485413
Grant/Contract Number:  
FE0007395
Resource Type:
Accepted Manuscript
Journal Name:
Energy Procedia
Additional Journal Information:
Journal Volume: 114; Journal Issue: C; Conference: 13th International Conference on Greenhouse Gas Control Technologies, GHGT-13, 14-18 November 2016, Lausanne, Switzerland; Journal ID: ISSN 1876-6102
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; Pilot CO2 capture; solvent degradation; monoethanolamine; heat stable salt; amine emissions

Citation Formats

Thompson, Jesse, Nikolic, Heather, Combs, Megan, Bhatnagar, Saloni, Pelgen, Jonanthan, Abad, Keemia, and Liu, Kunlei. Solvent Degradation and Emissions from a 0.7MWe Pilot CO2 Capture System with Two-stage Stripping. United States: N. p., 2017. Web. doi:10.1016/j.egypro.2017.03.1242.
Thompson, Jesse, Nikolic, Heather, Combs, Megan, Bhatnagar, Saloni, Pelgen, Jonanthan, Abad, Keemia, & Liu, Kunlei. Solvent Degradation and Emissions from a 0.7MWe Pilot CO2 Capture System with Two-stage Stripping. United States. doi:10.1016/j.egypro.2017.03.1242.
Thompson, Jesse, Nikolic, Heather, Combs, Megan, Bhatnagar, Saloni, Pelgen, Jonanthan, Abad, Keemia, and Liu, Kunlei. Sat . "Solvent Degradation and Emissions from a 0.7MWe Pilot CO2 Capture System with Two-stage Stripping". United States. doi:10.1016/j.egypro.2017.03.1242. https://www.osti.gov/servlets/purl/1485413.
@article{osti_1485413,
title = {Solvent Degradation and Emissions from a 0.7MWe Pilot CO2 Capture System with Two-stage Stripping},
author = {Thompson, Jesse and Nikolic, Heather and Combs, Megan and Bhatnagar, Saloni and Pelgen, Jonanthan and Abad, Keemia and Liu, Kunlei},
abstractNote = {The UKy-CAER team successfully tested an advanced 0.7 MWe post-combustion CO2 capture system on a coal-fired power plant using a heat integration process combined with two-stage stripping to enhance the CO2 absorber performance. One of the unique feature of the UKy-CAER integrated process is a two-stage stripping unit for solvent regeneration. The secondary stripper is empowered by the heat rejection from a conventional steam-heated (primary) stripper. The secondary stripper outlet stream at the commercial scale can be used as boiler secondary combustion air, consequently enriching the flue gas with CO2, resulting in less energy penalty required by the CO2 capture system. The primary goal of this study was to form an initial assessment of the impact on the amine solvent from coal combustion flue gas contaminants and the potential higher oxygen content in the solvent due to incorporation of the secondary air stripper into the conventional amine scrubber/stripper system. The overall oxidative degradation was comparable to previous reports with 30 wt% MEA solvent at similar flue gas run hours. This suggests that the addition of the secondary air stripper appears to be negligible with regards to solvent oxidation.},
doi = {10.1016/j.egypro.2017.03.1242},
journal = {Energy Procedia},
number = C,
volume = 114,
place = {United States},
year = {2017},
month = {7}
}

Journal Article:
Free Publicly Available Full Text
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Figures / Tables:

Fig. 1 Fig. 1: Flow diagram of UKy-CAER 0.7 MWe small pilot CO2 capture plant.

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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.