Solvent Degradation and Emissions from a 0.7MWe Pilot CO2 Capture System with Two-stage Stripping

Thompson, Jesse; Nikolic, Heather; Combs, Megan; Bhatnagar, Saloni; Pelgen, Jonanthan; Abad, Keemia; Liu, Kunlei

doi:10.1016/j.egypro.2017.03.1242

Title: Solvent Degradation and Emissions from a 0.7MWe Pilot CO₂ Capture System with Two-stage Stripping

Abstract

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.

Authors:

Thompson, Jesse ^[1]; Nikolic, Heather ^[1]; Combs, Megan ^[1]; Bhatnagar, Saloni ^[1]; Pelgen, Jonanthan ^[1]; Abad, Keemia ^[1]; Liu, Kunlei ^[1]

Univ. of Kentucky, Lexington, KY (United States)

Publication Date:: Sat Jul 01 00:00:00 EDT 2017

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.

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                    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.  https://doi.org/10.1016/j.egypro.2017.03.1242

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                    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.  https://doi.org/10.1016/j.egypro.2017.03.1242.  https://www.osti.gov/servlets/purl/1485413.

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@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         = {Sat Jul 01 00:00:00 EDT 2017},

  month        = {Sat Jul 01 00:00:00 EDT 2017}

}

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https://doi.org/10.1016/j.egypro.2017.03.1242

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Figures / Tables:

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

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Title: Solvent Degradation and Emissions from a 0.7MWe Pilot CO2 Capture System with Two-stage Stripping

Abstract

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Title: Solvent Degradation and Emissions from a 0.7MWe Pilot CO₂ Capture System with Two-stage Stripping