skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Advanced CO2 Capture Technology for Low Rank Coal IGCC System

Abstract

The overall objective of the project is to demonstrate the technical and economic viability of a new Integrated Gasification Combined Cycle (IGCC) power plant designed to efficiently process low rank coals. The plant uses an integrated CO2 scrubber/Water Gas Shift (WGS) catalyst to capture over90 percent capture of the CO2 emissions, while providing a significantly lower cost of electricity (COE) than a similar plant with conventional cold gas cleanup system based on SelexolTM technology and 90 percent carbon capture. TDA’s system uses a high temperature physical adsorbent capable of removing CO2 above the dew point of the synthesis gas and a commercial WGS catalyst that can effectively convert CO in The overall objective of the project is to demonstrate the technical and economic viability of a new Integrated Gasification Combined Cycle (IGCC) power plant designed to efficiently process low rank coals. The plant uses an integrated CO2 scrubber/Water Gas Shift (WGS) catalyst to capture over90 percent capture of the CO2 emissions, while providing a significantly lower cost of electricity (COE) than a similar plant with conventional cold gas cleanup system based on SelexolTM technology and 90 percent carbon capture. TDA’s system uses a high temperature physical adsorbent capable of removingmore » CO2 above the dew point of the synthesis gas and a commercial WGS catalyst that can effectively convert CO in bituminous coal the net plant efficiency is about 2.4 percentage points higher than an Integrated Gasification Combined Cycle (IGCC) plant equipped with SelexolTM to capture CO2. We also previously completed two successful field demonstrations: one at the National Carbon Capture Center (Southern- Wilsonville, AL) in 2011, and a second demonstration in fall of 2012 at the Wabash River IGCC plant (Terra Haute, IN). In this project, we first optimized the sorbent to catalyst ratio used in the combined WGS and CO2 capture process and confirmed the technical feasibility in bench-scale experiments. In these tests, we did not observe any CO breakthrough both during adsorption and desorption steps indicating that there is complete conversion of CO to CO2 and H2. The overall CO conversions above 90 percent were observed. The sorbent achieved a total CO2 loading of 7.82 percent wt. of which 5.68 percent is from conversion of CO into CO2. The results of the system analysis suggest that the TDA combined shift and high temperature PSA-based Warm Gas Clean-up technology can make a substantial improvement in the IGCC plant thermal performance for a plant designed to achieve near zero emissions (including greater than 90 percent carbon capture). The capital expenses are also expected to be lower than those of Selexol. The higher net plant efficiency and lower capital and operating costs result in substantial reduction in the COE for the IGCC plant equipped with the TDA combined shift and high temperature PSA-based carbon capture system.« less

Authors:
 [1]
  1. Tda Research, Inc., Wheat Ridge, CO (United States)
Publication Date:
Research Org.:
Tda Research, Inc., Wheat Ridge, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1123833
DOE Contract Number:  
FE0007966
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; 01 COAL, LIGNITE, AND PEAT

Citation Formats

Alptekin, Gokhan. Advanced CO2 Capture Technology for Low Rank Coal IGCC System. United States: N. p., 2013. Web. doi:10.2172/1123833.
Alptekin, Gokhan. Advanced CO2 Capture Technology for Low Rank Coal IGCC System. United States. https://doi.org/10.2172/1123833
Alptekin, Gokhan. 2013. "Advanced CO2 Capture Technology for Low Rank Coal IGCC System". United States. https://doi.org/10.2172/1123833. https://www.osti.gov/servlets/purl/1123833.
@article{osti_1123833,
title = {Advanced CO2 Capture Technology for Low Rank Coal IGCC System},
author = {Alptekin, Gokhan},
abstractNote = {The overall objective of the project is to demonstrate the technical and economic viability of a new Integrated Gasification Combined Cycle (IGCC) power plant designed to efficiently process low rank coals. The plant uses an integrated CO2 scrubber/Water Gas Shift (WGS) catalyst to capture over90 percent capture of the CO2 emissions, while providing a significantly lower cost of electricity (COE) than a similar plant with conventional cold gas cleanup system based on SelexolTM technology and 90 percent carbon capture. TDA’s system uses a high temperature physical adsorbent capable of removing CO2 above the dew point of the synthesis gas and a commercial WGS catalyst that can effectively convert CO in The overall objective of the project is to demonstrate the technical and economic viability of a new Integrated Gasification Combined Cycle (IGCC) power plant designed to efficiently process low rank coals. The plant uses an integrated CO2 scrubber/Water Gas Shift (WGS) catalyst to capture over90 percent capture of the CO2 emissions, while providing a significantly lower cost of electricity (COE) than a similar plant with conventional cold gas cleanup system based on SelexolTM technology and 90 percent carbon capture. TDA’s system uses a high temperature physical adsorbent capable of removing CO2 above the dew point of the synthesis gas and a commercial WGS catalyst that can effectively convert CO in bituminous coal the net plant efficiency is about 2.4 percentage points higher than an Integrated Gasification Combined Cycle (IGCC) plant equipped with SelexolTM to capture CO2. We also previously completed two successful field demonstrations: one at the National Carbon Capture Center (Southern- Wilsonville, AL) in 2011, and a second demonstration in fall of 2012 at the Wabash River IGCC plant (Terra Haute, IN). In this project, we first optimized the sorbent to catalyst ratio used in the combined WGS and CO2 capture process and confirmed the technical feasibility in bench-scale experiments. In these tests, we did not observe any CO breakthrough both during adsorption and desorption steps indicating that there is complete conversion of CO to CO2 and H2. The overall CO conversions above 90 percent were observed. The sorbent achieved a total CO2 loading of 7.82 percent wt. of which 5.68 percent is from conversion of CO into CO2. The results of the system analysis suggest that the TDA combined shift and high temperature PSA-based Warm Gas Clean-up technology can make a substantial improvement in the IGCC plant thermal performance for a plant designed to achieve near zero emissions (including greater than 90 percent carbon capture). The capital expenses are also expected to be lower than those of Selexol. The higher net plant efficiency and lower capital and operating costs result in substantial reduction in the COE for the IGCC plant equipped with the TDA combined shift and high temperature PSA-based carbon capture system.},
doi = {10.2172/1123833},
url = {https://www.osti.gov/biblio/1123833}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {9}
}