0
Research Papers: Gas Turbines: Coal, Biomass, and Alternative Fuels

A Novel Multifunctional Energy System (MES) for CO2 Removal With Zero Energy Penalty

[+] Author and Article Information
Hongguang Jin

Institute of Engineering Thermophysics,  Chinese Academy of Sciences, Beijing 100080, Chinahgjin@mail.etp.ac.cn

Wei Han

Institute of Engineering Thermophysics,  Chinese Academy of Sciences, Beijing 100080, China; Graduate School,  Chinese Academy of Sciences, Beijing 100049, China

Lin Gao

Institute of Engineering Thermophysics,  Chinese Academy of Sciences, Beijing 100080, China

J. Eng. Gas Turbines Power 130(2), 021401 (Mar 03, 2008) (7 pages) doi:10.1115/1.2799532 History: Received May 08, 2007; Revised June 13, 2007; Published March 03, 2008

This paper proposes a novel, multifunctional energy system (MES), in which hydrogen and electricity are cogenerated and about 90% of CO2 is removed. By integrating the methane/steam reforming reaction and combustion of coal, the natural gas and coal are utilized synthetically, and coal is burned to provide high-temperature thermal energy to the methane/steam reforming reaction. Afterwards, the resulting syngas enters a pressure swing adsorption (PSA) unit to separate about 70% of hydrogen, thereby significantly increasing the concentration of carbon dioxide from nearly 20% to 43% in the PSA tail gas. As a result, the overall efficiency of the new system becomes 63.2%. Compared to a conventional natural gas-based hydrogen plant and a coal-firing steam power plant without CO2 removal (the overall efficiency of the two systems is 63.0%), the energy penalty for CO2 removal in the new system is almost totally avoided. Based on the graphical exergy analysis, we propose that the integration of synthetic utilization of fossil fuel (natural gas and coal) and the CO2 removal process plays a significant role in zero energy penalty for CO2 removal and its liquefaction in the MES. The result obtained here provides a new approach for CO2 removal with zero or low thermal efficiency reduction (energy penalty) within an energy system.

FIGURES IN THIS ARTICLE
<>
Copyright © 2008 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Conceptual scheme of the multifunctional energy system with CO2 removal

Grahic Jump Location
Figure 2

System configuration of the new MES system with CO2 removal

Grahic Jump Location
Figure 3

(a) Coal-fired steam plant with CO2 removal by exhaust gas treatment; and (b) hydrogen plant with CO2 removal by exhaust gas treatment

Grahic Jump Location
Figure 4

(a) EUD for combustion of coal in the hearth of CFB boiler of reference systems with CO2 removal; and (b) EUD for combustion of coal in hearth of dual fuel reformer of MES

Grahic Jump Location
Figure 5

(a) EUD for combustion of NG in reformer of reference systems with CO2 removal; and (b) EUD for combustion of tail gas in gas turbine combustor of MES

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In