期刊
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
卷 83, 期 -, 页码 43-50出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijggc.2019.01.022
关键词
Pressurized H-2 production; CO2 capture; Ca/Cu looping process; Fixed bed reactor
类别
资金
- European Union [608512]
- FPI fellowship [ENE 2012-37936-CO2-01, BES-2013-064616]
- MICINN
The exothermic reduction of the CuO present in a bed of solids (39% wt. CuO, 24.5% wt. CaCO3 and 1.5% wt. Ni, being the rest inert species for the process) with a fuel gas, generated a pure CO2 stream once steam was condensed (and free of N-2). In this way, a Cu/Ca molar ratio of approximately 2 in the bed of solids allowed for CaCO3 calcination efficiencies of around 95% molar basis at the reducing gases break-through. This allowed performing consecutive cycles of the main reaction steps involved in the Ca/Cu H-2 production process. The mixture CaO-based sorbent, reforming catalyst and Cu-based material was able to produce a gas stream with a 94.0% vol. H-2 at 10 bar during the CH4 sorption enhanced reforming stage. The Cu-based material was oxidized with a highly diluted air stream at 10 bar, reacting in a well defined reaction front. A pure CO2 gas stream was obtained at reactor exit during the calcination/reduction stage with a fuel gas typical composition of a Steam Methane Reforming (SMR) stage with low steam to carbon molar ratio (S/C). The experimental results indicated that it was possible to cool the bed and to produce a syngas with a H-2/CO molar ratio of about 3.5 suitable for its use in the calcination/reduction stage, in a SMR stage with low (S/C). It was also possible to perform the calcination/reduction and SMR in one single stage.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据