Volume 39, Issue 10 pp. 1912-1920
Research Article

Thermodynamics of Hydrogen Production Based on Coal Gasification Integrated with a Dual Chemical Looping Process

Lin Zhu

Corresponding Author

Lin Zhu

Key Laboratory of Gas Process Engineering, College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, China.

Key Laboratory of Gas Process Engineering, College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, China.Search for more papers by this author
Luling Li

Luling Li

Key Laboratory of Gas Process Engineering, College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, China.

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Zheng Zhang

Zheng Zhang

Key Laboratory of Gas Process Engineering, College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, China.

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Hu Chen

Hu Chen

Key Laboratory of Gas Process Engineering, College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, China.

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Le Zhang

Le Zhang

Key Laboratory of Gas Process Engineering, College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, China.

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Feng Wang

Feng Wang

Key Laboratory of Gas Process Engineering, College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, China.

China Petroleum LONGWAY Engineering Project Management Co., Ltd, Langfang, China.

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First published: 04 May 2016
Citations: 9

Abstract

The performance of an innovative hydrogen production technology, which is based on a coal gasification system integrated with a dual chemical looping process, namely, chemical looping air separation (CLAS) and calcium looping CO2 absorption (CaL), is evaluated. CLAS offers an advantage over other mature technologies in that it can reduce capital costs considerably. CaL is an efficient method for hydrogen production and CO2 capturing. The proposed technologies are studied by Aspen Plus based on the Gibbs free energy minimization principle. The key factors in terms of reduction temperature, gasification pressure, temperature of water-gas shift reaction, and water consumption, which proved to have a significant impact on the performance of the whole hydrogen generation process, are discussed.

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