Polygeneration of hydrogen and power based on coal gasification integrated with a dual chemical looping process: Thermodynamic investigation
Polygeneration of hydrogen and power based on coal gasification integrated with a dual chemical looping process: Thermodynamic investigation
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DOI：
10.1016/j.compchemeng.2015.09.010
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发表时间：
2016-01
期刊：
影响因子：
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通讯作者：
Lin Zhu;Zhengang Zhang;Junming Fan;Pengpeng Jiang
中科院分区：
文献类型：
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作者：
Lin Zhu;Zhengang Zhang;Junming Fan;Pengpeng Jiang
本文从热力学的角度评价了煤同时气化制取电能和氢气的两种化学循环工艺，即化学环空分离(CLAS)和钙环CO2吸收水煤气变换(WGS-CAL)。与其他成熟技术相比，Clas提供了一个优势，因为它可以显著降低资本成本。WGS-CAL是一种高效的制氢和捕集二氧化碳的方法。分析了氧气转煤(O/C)、水蒸气转煤(S/C)和CaO转煤(Ca/C)三个主要因素。并与传统的气化联合循环(IGCC)、气化与碳捕获与储存联合循环(IGCC-CCS)、气化与钙基化学环流联合循环(IGCC-CAL)进行了比较。并对该过程进行了(火用)破坏分析。
This paper assesses, from a thermodynamic perspective, the conversion of coal to power and hydrogen through gasification simultaneously with a dual chemical looping processes, namely chemical looping air separation (CLAS) and water–gas shift with calcium looping CO2absorption (WGS-CaL). CLAS offers an advantage over other mature technologies in that it can significantly reduce its capital cost. WGS-CaL is an efficient method for hydrogen production and CO2capture. The three major factors, oxygen to coal (O/C), steam to coal (S/C) and CaO to coal (Ca/C) were analyzed. Moreover, the comparisons of this suggested process and the traditional processes including integrated gasification combined cycle (IGCC), integrated gasification combined cycle with carbon capture and storage (IGCC-CCS) and integrated gasification combined cycle with calcium-based chemical looping (IGCC-CaL) were discussed. And, the exergy destruction analysis of this suggested process has also been calculated.