Sequential SO2/CO2 Capture of Calcium-Based Solid Waste from the Paper Industry in the Calcium Looping Process
Sequential SO2/CO2 Capture of Calcium-Based Solid Waste from the Paper Industry in the Calcium Looping Process
复制标题
在钙循环过程中连续捕获造纸工业钙基固体废物的 SO2/CO2
DOI：
10.1021/ie301375g
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发表时间：
2012-12
期刊：
影响因子：
--
通讯作者：
路春美
中科院分区：
文献类型：
--
作者：
李英杰;刘长天;孙荣岳;刘红玲;吴水木;路春美
本文研究了造纸工业固体废弃物石灰泥（LM）在钙循环过程中对so2和CO 2的连续捕获行为。为了尽量减少Na和Cl等杂质对LM捕获co2和so2的不利影响，用蒸馏水对LM进行预洗。预洗处理提高了LM在多次碳化/煅烧循环中的循环co2捕获能力。处理后的LM的最终碳化转化率分别是原始LM和石灰石的1.8倍和4.8倍。微观结构分析表明，经过预洗处理后，LM的比表面积和孔体积显著增加。随着磺化温度从850℃提高到950℃，相同循环次数后，原料LM和处理LM的磺化转化率均有所提高。有趣的是，硫化温度的影响随循环次数的增加而减小。对于生料LM或处理过的LM， 50次循环后的硫化转化率高于15次或100次循环后的硫化转化率。这与多次循环后原始LM和处理LM的孔径变化有关。在相同的循环次数和相同的反应时间下，处理后的LM的磺化转化率高于未处理LM和石灰石。
In this work, the sequential SO 2 and CO 2 capture behavior of lime mud (LM) as a solid waste from the paper industry was investigated in the calcium looping process. In order to minimize the unfavorable effects of impurities such as Na and Cl on CO 2 and SO 2 capture of LM, the LM was prewashed with distilled water. The prewash treatment improves the cyclic CO 2 capture capacity of the LM during multiple carbonation/calcination cycles. The ultimate carbonation conversion of the treated LM is 1.8 and 4.8 times greater than those of the raw LM and the limestone, respectively. The microstructure analysis shows that the surface area and pore volume of the LM are significantly increased after the prewash treatment. With increasing the sulfation temperature from 850 to 950 °C, both the raw LM and the treated one show an increase in the sulfation conversion after the same number of cycles. Interestingly, the effect of the sulfation temperature decreases with increasing the number of cycles. For the raw LM or the treated LM, the sulfation conversion after 50 cycles is higher than that after 15 or 100 cycles. That is related to the change in pore size of the raw LM and the treated LM after multiple cycles. Compared with the raw LM and the limestone, the sulfation conversion of the treated LM is greater after the same number of cycles and at the same reaction time.
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影响因子：
4.2
作者：
S. Ramkumar;L. Fan
通讯作者：
S. Ramkumar;L. Fan
影响因子：
4.2
作者：
Fu-Chen Yu;Nihar Phalak;Zhenchao Sun;L. Fan
通讯作者：
Fu-Chen Yu;Nihar Phalak;Zhenchao Sun;L. Fan
影响因子：
5.3
作者：
B. Feng;Wenqiang Liu;Xiang Li;H. An
通讯作者：
B. Feng;Wenqiang Liu;Xiang Li;H. An
影响因子：
7.4
作者：
V. Manović;E. Anthony
通讯作者：
V. Manović;E. Anthony
影响因子：
4.2
作者：
V. Manović;E. Anthony;D. Lončarević
通讯作者：
V. Manović;E. Anthony;D. Lončarević