Effect of active alkali and alkaline earth metals on physicochemical properties and gasification reactivity of co-pyrolysis char from coal blended with corn stalks

被引：32

作者：

Chen, Xiye ^{[1
,2
]}

Liu, Li ^{[1
]}

Zhang, Linyao ^{[1
,2
]}

Zhao, Yan ^{[3
]}

Xing, Chang ^{[4
]}

Jiao, Zixin ^{[1
]}

Yang, Chunhui ^{[2
]}

Qiu, Penghua ^{[1
]}

机构：

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

[2] Harbin Inst Technol, Sch Chem & Chem Engn, Harbin 150001, Peoples R China

[3] Shenyang Acad Environm Sci, Liaoning Prov Key Lab Urban Ecol, Shenyang 110167, Peoples R China

[4] Harbin Inst Technol, Sch Astronaut, Harbin 150001, Peoples R China

来源：

RENEWABLE ENERGY | 2021年 / 171卷

基金：

国家重点研发计划;

关键词：

Active AAEMs; Co-pyrolysis; Char properties; Coal; Corn stalks; LIGNOCELLULOSIC BIOMASS; STRUCTURE EVOLUTION; GASEOUS PRODUCTS; THERMAL-BEHAVIOR; DECOMPOSITION; CELLULOSE; KINETICS; SYNERGY;

D O I：

10.1016/j.renene.2021.02.098

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

During co-pyrolysis, active alkali and alkaline earth metals (AAEMs) can influence the synergistic effect of coal and biomass. For exploring the influence of active AAEMs on the co-pyrolysis process, this paper studied the physicochemical properties and gasification reactivity of co-pyrolysis char of four blends: raw coal and raw corn stalks (RC&RCS), pickling coal and raw corn stalks (HC&RCS), raw coal and pickling corn stalks (RC&HCS), and pickling coal and pickling corn stalks (HC&HCS). The results show that the synergistic effects on char yields are within 3%. During co-pyrolysis, the presence of corn stalks is beneficial to the generation of spherical particles from coal char, and the promotion effect of pickling corn stalks is greater than that of the raw corn stalks. The active AAEMs have an inhibitory effect on the decomposition of aliphatic C-H, C=O and-CH3 in Shenmu coal, and also on the decomposition of O-H, aliphatic C-H and C-O in the corn stalks. The experimental values of gasification residual carbon of RC&RCS/HC&RCS co-pyrolysis char are 24-77% of the calculated values, while that of RC&HCS/HC&HCS co-pyrolysis char are 86-103% of the calculated values. The interaction between the blends promotes the reactivity of co-pyrolysis char. (C) 2021 Published by Elsevier Ltd.

引用

页码：1213 / 1223

页数：11

共 28 条

[1] Examination of degree of cross-linking for cellulose precursors pretreated with acid/hot water at low temperature [J].

Chaiwat, Weerawut ;

Hasegawa, Isao ;

Kori, Junichi ;

Mae, Kazuhiro .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2008, 47 (16) :5948-5956

[2] A Review on the Properties of Copyrolysis Char from Coal Blended with Biomass [J].

Chen, Xiye ;

Liu, Li ;

Zhang, Linyao ;

Zhao, Yan ;

Qiu, Penghua ;

Ruan, Roger .

ENERGY & FUELS, 2020, 34 (04) :3996-4005

[3] Physicochemical Properties and AAEM Retention of Copyrolysis Char from Coal Blended with Corn Stalks [J].

Chen, Xiye ;

Liu, Li ;

Zhang, Linyao ;

Zhao, Yan ;

Ruan, Roger ;

Qiu, Penghua .

ENERGY & FUELS, 2019, 33 (11) :11082-11091

[4] Pyrolysis Characteristics and Kinetics of Coal-Biomass Blends during Co-Pyrolysis [J].

Chen, Xiye ;

Liu, Li ;

Zhang, Linyao ;

Zhao, Yan ;

Qiu, Penghua .

ENERGY & FUELS, 2019, 33 (02) :1267-1278

[5] Gasification reactivity of co-pyrolysis char from coal blended with corn stalks [J].

Chen, Xiye ;

Liu, Li ;

Zhang, Linyao ;

Zhao, Yan ;

Qiu, Penghua .

BIORESOURCE TECHNOLOGY, 2019, 279 :243-251

[6] Evaluation of chemical structure, pyrolysis reactivity and gaseous products of Shenmu coal of different particle sizes [J].

Chen, Xiye ;

Zhao, Yan ;

Liu, Li ;

Zhang, Linyao ;

Zhang, Zhuo ;

Qiu, Penghua .

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, 2018, 130 :294-304

[7] Thermogravimetric analysis and kinetics of the co-pyrolysis of coal blends with corn stalks [J].

Chen, Xiye ;

Liu, Li ;

Zhang, Linyao ;

Zhao, Yan ;

Zhang, Zhuo ;

Xie, Xing ;

Qiu, Penghua ;

Chen, Gang ;

Pei, Jiangtao .

THERMOCHIMICA ACTA, 2018, 659 :59-65

[8] Mineral matter interactions during co-pyrolysis of coal and biomass and their impact on intrinsic char co-gasification reactivity [J].

Ellis, Naoko ;

Masnadi, Mohammad S. ;

Roberts, Daniel G. ;

Kochanek, Mark A. ;

Ilyushechkin, Alexander Y. .

CHEMICAL ENGINEERING JOURNAL, 2015, 279 :402-408

[9] Some recent advances in the understanding of the pyrolysis and gasification behaviour of Victorian brown coal [J].

Li, Chun-Zhu .

FUEL, 2007, 86 (12-13) :1664-1683

[10] Fates and roles of alkali and alkaline earth metals during the pyrolysis of a Victorian brown coal [J].

Li, CZ ;

Sathe, C ;

Kershaw, JR ;

Pang, Y .

FUEL, 2000, 79 (3-4) :427-438

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