Chemical looping with oxygen uncoupling of hydrochar in a combined cycle for renewable and low-emission power generation

Received: 01 Oct 2022, Revised: 17 Oct 2022, Accepted: 15 Dec 2022, Available online: 21 Dec 2022, Version of Record: 21 Dec 2022

Eduardo Villegas a
,
Thinh D. Nguyen a
,
Yong X. Gan b
,
Charles J. Coronella c
,
Marisa Zuzga d
,
Mingheng Li a
a
Department of Chemical and Materials Engineering, California State Polytechnic University, Pomona, CA 91768, USA
b
Department of Mechanical Engineering, California State Polytechnic University, Pomona, CA 91768, USA
c
Department of Chemical and Materials Engineering, University of Nevada, Reno 89557, USA
d
ZERE Energy and Biofuels, Inc., San Bruno, CA 94066, USA

Abstract


This work is concerned with design and analysis of a renewable power generation process featured with fast speed of biomass processing, low NOx and SOx emissions and ease of carbon capture. It is based on chemical looping with oxygen uncoupling (CLOU) of hydrochar derived from hydrothermal carbonization (HTC) of biomass. An air reactor and a fuel reactor employing CuO/Cu2O redox reactions are integrated with a combined Brayton and Rankine cycle to generate power. The design simulation is conducted using Aspen Plus V11. By implementing multiple-stage intercooled compression and multiple-stage reheat expansion in the Brayton cycle and multi-pressure steam generation in the Rankine cycle, an overall thermal efficiency of 35.3% on HHV basis without carbon capture (or 32.4% with carbon capture) is obtained.
Graphical abstract

  1. Download: Download high-res image (112KB)
  2. Download: Download full-size image
Keywords
Chemical looping with oxygen uncoupling
Hydrochar
Power generation
Renewable energy
Carbon capture
Process design and simulation



Description



   

Indexed in scopus

https://www.scopus.com/authid/detail.uri?authorId=57194408086 		      

Article metrics

10.31763/DSJ.v5i1.1674 Abstract views : | PDF views :

   

Cite

How to cite item
   

Full Text

Download

Conflict of interest


“Authors state no conflict of interest”


Funding Information


This research received no external funding or grants


Peer review:


Peer review under responsibility of Defence Science Journal


Ethics approval:


Not applicable.


Consent for publication:


Not applicable.


Acknowledgements:


None.