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使用两种不同钙钛矿基氧载体的化学链燃烧：一项试点研究。

Chemical Looping Combustion Using Two Different Perovskite Based Oxygen Carriers: A Pilot Study.

作者信息

Mayer Karl, Piesenberger Stephan, Penthor Stefan, Pröll Tobias, Hofbauer Hermann

机构信息

Institute for Chemical Environmental and Biological Engineering TU Wien Getreidemarkt 9/166 1060 Vienna / Austria.

Institute for Chemical and Energy Engineering University of Natural Resources and Life Sciences Peter-Jordan-Straße 82 1190 Vienna / Austria.

出版信息

Energy Technol (Weinh). 2018 Dec;6(12):2333-2343. doi: 10.1002/ente.201800244. Epub 2018 Nov 12.

DOI:10.1002/ente.201800244
PMID:30775218
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6358055/
Abstract

Two perovskite type oxygen carriers, for the application in chemical looping combustion, called C14 and C28 are investigated. The composition of C14 is CaMnMgO and CaMnMgTiO for C28, respectively. Both oxygen carriers allow chemical looping with oxygen uncoupling (CLOU), they release oxygen under conditions with low oxygen partial pressure. The materials are tested in a 120 kWth pilot plant at TU Wien. Operating temperatures from 800 °C to 960 °C are investigated, further the influence of active inventory and air equivalence number is reviewed. In addition to the experiments in the pilot plant, particle analysis is performed. In total, the CLC operation for C14 was 29.5 h and 22.7 h for C28, resulting in 75 different operating points. Both oxygen carrier materials are able to fully convert the natural gas, used as fuel. A temperature dependency is noticeable for both, the best results are achieved at 960 °C, the highest investigated temperature. Both, C14 and C28 are able to release about 10 % of the total available oxygen via oxygen uncoupling. The performance of both oxygen carriers is strongly linked to the air equivalence number and the resulting amount of excess oxygen in the air reactor. Low oxygen partial pressures lead to incomplete fuel conversion.

摘要

研究了两种用于化学链燃烧的钙钛矿型氧载体，分别称为C14和C28。C14的组成是CaMnMgO，C28的组成是CaMnMgTiO。两种氧载体都可实现化学链氧解耦燃烧（CLOU），它们在低氧分压条件下释放氧气。这些材料在维也纳工业大学的120 kWth中试装置中进行了测试。研究了800 °C至960 °C的运行温度，还考察了活性存量和空气当量比的影响。除了在中试装置中进行的实验外，还进行了颗粒分析。C14的化学链燃烧运行总时长为29.5 h，C28为22.7 h，共得到75个不同的运行点。两种氧载体材料都能完全转化用作燃料的天然气。两者都存在温度依赖性，在研究的最高温度960 °C时取得了最佳结果。C14和C28都能够通过氧解耦释放约10%的总可用氧量。两种氧载体的性能都与空气当量比以及空气反应器中产生的过量氧量密切相关。低氧分压会导致燃料不完全转化。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c903/6358055/738b266666de/ENTE-6-2333-g014.jpg
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引用本文的文献

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本文引用的文献

1
Chemical structures and performance of perovskite oxides.钙钛矿氧化物的化学结构与性能
Chem Rev. 2001 Jul;101(7):1981-2017. doi: 10.1021/cr980129f.