0
Research Papers

A Novel Multifunctional Energy System for CO2 Removal by Solar Reforming of Natural Gas

[+] Author and Article Information
Wei Han, Hongguang Jin, Rumou Lin

 Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, Chinahanwei@mail.etp.ac.cn

J. Sol. Energy Eng 133(4), 041004 (Sep 21, 2011) (8 pages) doi:10.1115/1.4004034 History: Received September 13, 2010; Revised April 07, 2011; Published September 21, 2011; Online September 21, 2011

In this paper, a novel multifunctional energy system (MES) fueled by natural gas and solar radiation is proposed. In this MES, hydrogen and electricity are cogenerated and approximately 92% of CO2 derived from natural gas is removed. The solar concentrated process provides high-temperature thermal energy to the methane/steam reforming reaction. The resulting syngas enters a pressure swing adsorption unit to separate approximately 80% of hydrogen. This process significantly increases the concentration of carbon dioxide in syngas from nearly 19% to 49%, which decreases energy consumption in CO2 removal. As a result, the overall power efficiency of the new system becomes about 39.2%. Compared to a conventional natural gas-based hydrogen plant with CO2 removal and a concentrated solar power tower plant, the overall power efficiency of the new system is increased by 7.9 percentage points. Based on the graphical exergy analysis, the integration of synthetic utilization of natural gas and solar radiation, combination of the hydrogen production plant and power plant, and integration of the energy utilization processes and CO2 separation were found to play significant roles to improve thermodynamic performance. The result obtained here provides a new approach for highly efficient use of solar radiation by hybrid natural gas.

FIGURES IN THIS ARTICLE
<>
Copyright © 2011 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 fueled by solar radiation and natural gas

Grahic Jump Location
Figure 2

System configuration of multifunctional energy system fueled by solar radiation and natural gas

Grahic Jump Location
Figure 3

(a) Flowchart of the concentrated solar power tower plant; and (b) flowchart of the NG-based hydrogen plant with CO2 removal

Grahic Jump Location
Figure 4

(a) EUD for steam generation from solar radiation in the receiver of the CSTP; and (b) EUD for reforming process in the solar reformer of the MES

Grahic Jump Location
Figure 5

(a) EUD for combustion of NG and tail gas in the reformer of the NHPR; and (b) EUD for combustion of NG and tail gas in the GT combustor of the MES

Grahic Jump Location
Figure 6

(a) EUD for flue gas heat recovery process in reference systems; and (b) EUD for flue gas heat recovery in the MES

Grahic Jump Location
Figure 7

EUD of heat exchange process

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