Thermodynamic evaluation of sorption-enhanced chemical looping gasification with coal as fuel

被引：22

作者：

Li, Bowen ^{[1
]}

Wang, Shuai ^{[1
,2
]}

Yang, Xuesong ^{[1
]}

Wu, Qiang ^{[1
]}

He, Yurong ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Peoples R China

[2] Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2020年 / 45卷 / 41期

关键词：

Chemical looping gasification; Coal; Sorption; Gibbs free energy; BLAST-FURNACE SLAG; FLUIDIZED-BED; COMBUSTION; CARRIER; DESIGN; SYSTEM; STEAM;

D O I：

10.1016/j.ijhydene.2020.05.205

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Chemical looping gasification (CLG) is regarded as an efficient way for the utilization of solid fuel and hydrogen-enriched syngas production. In this work, a thermodynamic analysis is carried out to evaluate the CLG performance of coal on the basis of Gibbs free energy minimization. In order to enhance the gasification process, CO2 sorption is employed and sorbents are circulated in the whole system. The influence of operating parameters on the CLG performance as well as heat requirement of the system is further examined. The results reveal that the addition of sorbent can promote the hydrogen production and provide the heat for the reaction in the fuel reactor (FR), whereas additional energy input is still required for the whole system. A proper increase of oxygen carrier circulation rate can achieve the auto-thermal condition of the system. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：21186 / 21194

页数：9

共 24 条

[21] Direct and two-step gasification behaviour of Victorian brown coals in an entrained flow reactor [J].

Xu, Tao ;

Bhattacharya, Sankar .

ENERGY CONVERSION AND MANAGEMENT, 2019, 195 :1044-1055

[22] Design and thermodynamic analysis of coal-gasification assisted multigeneration system with hydrogen production and liquefaction [J].

Yilmaz, Fatih ;

Ozturk, Murat ;

Selbas, Resat .

ENERGY CONVERSION AND MANAGEMENT, 2019, 186 :229-240

[23] Coal-Direct Chemical Looping Gasification for Hydrogen Production: Reactor Modeling and Process Simulation [J].

Zeng, Liang ;

He, Feng ;

Li, Fanxing ;

Fan, Liang-Shih .

ENERGY & FUELS, 2012, 26 (06) :3680-3690

[24] Thermodynamic evaluation of a conceptual process for coal gasification coupled with chemical looping air separation [J].

Zhu, Lin ;

Wang, Feng ;

Zhang, Zheng .

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION, 2016, 106 :33-41

← 1 2 3 →