The consecutive calcination/sulfation in calcium looping for CO2 capture: Particle modeling and behaviour investigation
The consecutive calcination/sulfation in calcium looping for CO2 capture: Particle modeling and behaviour investigation
复制标题
用于 CO2 捕获的钙循环中的连续煅烧/硫酸化：颗粒建模和行为研究
DOI：
10.1016/j.cej.2017.11.169
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发表时间：
2018-02
影响因子：
15.1
通讯作者：
Ran Jingyu
中科院分区：
文献类型：
--
作者：
Qin Changlei;He Donglin;Zhang Zhonghui;Tan Lili;Ran Jingyu
基于吸附/脱附循环的钙环是一种新型的、有前途的电厂烟气CO2捕集方法。在脱附过程中，由于煤的原位燃烧，吸附剂的煅烧不可避免地伴随着硫酸化反应的发生，并呈现出一种不同于典型硫酸化反应模式的有趣的、具有代表性的连续多反应模式。不幸的是，该过程仍然缺乏良好的理解和准确的模拟。在这里，我们报告我们的工作发展的粒子模型，涉及连续反应，几何演化，和质量/热传递。研究了反应条件和颗粒参数对颗粒-颗粒几何形状的时空变化以及CaCO_3、CaO和CaSO_4的连续转化的影响。结果表明，与传统的煅烧/硫酸化分离假设相比，所建立的模型能够得到更精确的模拟结果，并能够清晰地识别煅烧和硫酸化之间的相互作用。此外，它是观察到的气体浓度，颗粒的大小和它的晶粒产生的连续反应的条件下的钙循环的最显着的影响。
Calcium looping, basing on sorption/desorption cycles, is a novel and promising approach to capture CO2from flue gas of power plant. In the desorption process, sulfation inevitably occurs accompanying the dominant calcination of sorbents due to the in-situ combustion of coal, and it demonstrates an interesting and representative consecutive multi-reaction mode which is different from the typical sulfation patterns. Unfortunately, the process is still lack of good understanding and accurate simulation. Here, we report our work on the development of a particle model involving the consecutive reactions, geometrical evolution, and mass/heat transfer. Then, the interactive behaviours, and effects of reaction conditions and particle parameters on the temporal and spatial changes in particle-grain geometry, the successive conversion of CaCO3, CaO and CaSO4are studied. It shows that the model developed could get a more precise simulation than the conventionally used separate calcination/sulfation assumption, and clearly identify the interaction between calcination and sulfation. Furthermore, it is observed that gas concentrations, size of the particle and its grains generate the most pronounced impacts on the consecutive reactions under the conditions of calcium looping.
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影响因子：
3.5
作者：
P. Crnkovic;F. E. Milioli;J. D. Pagliuso
通讯作者：
P. Crnkovic;F. E. Milioli;J. D. Pagliuso
影响因子：
4.7
作者：
F. García-Labiano;L. F. D. Diego;J. Adánez;A. Abad;P. Gayán
通讯作者：
F. García-Labiano;L. F. D. Diego;J. Adánez;A. Abad;P. Gayán
影响因子：
2.5
作者：
M. L. Davidson;D. Harrison
通讯作者：
M. L. Davidson;D. Harrison
DOI：
10.1016/j.ijggc.2013.07.014
发表时间：
2013-10-01
影响因子：
3.9
作者：
Arias, B.;Diego, M. E.;Sanchez-Biezma, A.
通讯作者：
Sanchez-Biezma, A.
影响因子：
7.5
作者：
Lu, Dennis Y.;Hughes, Robin W.;Anthony, Edward J.
通讯作者：
Anthony, Edward J.