On a clean power generation system with the co-gasification of biomass and coal in a quadruple fluidized bed gasifier

Linbo Yan; Boshu He

doi:10.1016/j.biortech.2017.03.087

On a clean power generation system with the co-gasification of biomass and coal in a quadruple fluidized bed gasifier

Bioresour Technol. 2017 Jul:235:113-121. doi: 10.1016/j.biortech.2017.03.087. Epub 2017 Mar 18.

Authors

Linbo Yan¹, Boshu He²

Affiliations

¹ Institute of Combustion and Thermal System, School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China. Electronic address: lbyan@bjtu.edu.cn.
² Institute of Combustion and Thermal System, School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China.

PMID: 28365338
DOI: 10.1016/j.biortech.2017.03.087

Abstract

A clean power generation system was built based on the steam co-gasification of biomass and coal in a quadruple fluidized bed gasifier. The chemical looping with oxygen uncoupling technology was used to supply oxygen for the calciner. The solid oxide fuel cell and the steam turbine were combined to generate power. The calcium looping and mineral carbonation were used for CO₂ capture and sequestration. The aim of this work was to study the characteristics of this system. The effects of key operation parameters on the system total energy efficiency (ŋ_ten), total exergy efficiency (ŋ_tex) and carbon sequestration rate (R_cs) were detected. The energy and exergy balance calculations were implemented and the corresponding Sankey and Grassmann diagrams were drawn. It was found that the maximum energy and exergy losses occurred in the steam turbine. The system ŋ_ten and ŋ_tex could be ∼50% and ∼47%, and R_cs could be over unit.

Keywords: Carbon capture; Chemical looping; Control strategy; Exergy analyses.

MeSH terms

Biomass*
Carbon Sequestration
Coal*
Gases
Oxygen
Steam

Substances

Coal
Gases
Steam
Oxygen