Energy quality factor and exergy destruction processes analysis for chemical looping hydrogen generation by coal

2020 ◽  
Author(s):  
Fan Zhang ◽  
Lin Zhu ◽  
Yuan Wang ◽  
Ling Sun
Keyword(s):  
Quality Factor ◽  
Hydrogen Generation ◽  
Chemical Looping ◽  
Exergy Destruction ◽  
Chemical Looping Hydrogen Generation

A Novel Chemical-Looping Hydrogen Generation System With Multi-Input Fossil Fuels

2013 ◽  
Author(s):  
Xiaosong Zhang ◽  
Hongguang Jin
Keyword(s):  
Hydrogen Production ◽  
Natural Gas ◽  
Fossil Fuels ◽  
Hydrogen Generation ◽  
Chemical Looping ◽  
Generation System ◽  
System A ◽  
Energy Penalty ◽  
Burning Coal ◽  
Chemical Looping Hydrogen Generation

This paper proposes a multi-input chemical looping hydrogen generation system (MCLH), which generates hydrogen, through the use of natural gas and coal. In this system, a new type of oven, burning coal instead of natural gas as heating resource for hydrogen production reaction, is adopted. Coal can be converted to hydrogen indirectly without gasification. Benefits from the chemical looping process, the CO2 can be captured without energy penalty. With the same inputs of fuel, the new system can product about 16% more hydrogen than that of individual systems. As a result, the energy consumption of the hydrogen production is about 165J/mol-H2. Based on the exergy analyses, it is disclosed that the integration of synthetic utilization of natural gas and coal plays a significant role in reducing the exergy destruction of the MCLH system. The promising results obtained may lead to a clean coal technology that will utilize natural gas and coal more efficiently and economically.

Characterization of Fe 2 O 3 /CeO 2 oxygen carriers for chemical looping hydrogen generation

2018 ◽  
Vol 43 (6) ◽  
pp. 3154-3164 ◽  
Author(s):  
Shiwei Ma ◽  
Shiyi Chen ◽  
Ahsanullah Soomro ◽  
Min Zhu ◽  
Wenguo Xiang
Keyword(s):  
Hydrogen Generation ◽  
Chemical Looping ◽  
Oxygen Carriers ◽  
Chemical Looping Hydrogen Generation
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