Fluidization and reaction behavior in chemical looping gasification of lignite

被引：9

作者：

Yang, Jie ^{[1
]}

Liu, Shengyu ^{[1
]}

Guo, Zhiying ^{[2
]}

Ao, Ran ^{[2
]}

Dai, Quxiu ^{[2
]}

Sun, Yuxin ^{[1
]}

Deng, Zhiyong ^{[1
]}

Tan, Xiandong ^{[1
]}

Yang, Yijin ^{[1
]}

Ma, Liping ^{[2
]}

机构：

[1] Chengdu Univ Informat Technol, China Serbia Belt & Rd Joint Lab Environm & Energ, Coll Resources & Environm, Chengdu 610225, Sichuan, Peoples R China

[2] Kunming Univ Sci & Technol, Fac Environm Sci & Engn, Kunming 650093, Yunnan, Peoples R China

来源：

SUSTAINABLE ENERGY & FUELS | 2021年 / 5卷 / 14期

关键词：

OXYGEN CARRIER; GAS-PRODUCTION; COAL; COMBUSTION; BED; PHOSPHOGYPSUM; PERFORMANCE; EFFICIENCY; CONVERSION; PYROLYSIS;

D O I：

10.1039/d1se00627d

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 a recommended method for lignite gasification, and the product syngas is a mixture of H-2, CO, and other gases. Much attention has been paid to coal gasification using a fluidized bed for syngas production. In this study, the performance of syngas preparation from CLG using a fluidized bed and CaSO4-CuO as the oxygen carrier was evaluated. To better understand the fluidization process, coal fluidized bed experiments were carried out. Based on the cold-state, syngas obtained from CLG under hot-state conditions was analyzed. The results show that a reaction time of 5 min is recommended for more CO generation. At the same time, a H-2/CO molar ratio of around 1 can be achieved. The energy consumption of syngas generation using CaSO4-CuO CLG with lignite is 399.75 kJ mol(-1), lower than that of syngas generation using the traditional coal reaction with pure oxygen and steam. This indicates that this is an advanced method for preparing syngas, providing a basis for industrial amplification operations.

引用

页码：3656 / 3665

页数：10

共 45 条

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