Linking the SO2 emission of cement plants to the sulfur characteristics of their limestones: A study of 80 NSP cement lines in China
Linking the SO2 emission of cement plants to the sulfur characteristics of their limestones: A study of 80 NSP cement lines in China
复制标题
将水泥厂的 SO2 排放与其石灰石的硫特征联系起来：对中国 80 条 NSP 水泥生产线的研究
DOI：
10.1016/j.jclepro.2019.02.133
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发表时间：
2019-05
影响因子：
11.1
通讯作者：
Yu Qijun
中科院分区：
文献类型：
--
作者：
Zhang Tongsheng;Wu Chang;Li Bin;Wang Jiawei;Ravat Rasheeda;Chen Xinzhi;Wei Jiangxiong;Yu Qijun
在正常运行的新型悬浮预热器（NSP）水泥生产线中，SO2排放主要来源于生料中的硫化物和石灰石，约占85%wt.是硫的主要来源。然而，石灰石的硫特性及其对SO2排放的影响尚未得到明确。本研究对80个SO2排放量>200 mg/Nm 3的新型干法水泥生产线进行了观测，分析了石灰石中硫的含量、硫的形态以及黄铁矿的形貌，并将其与SO2排放量进行了关联。结果表明，烟气中SO2排放量随石灰石中SO 3含量的增加而线性增加，硫酸盐比硫化物减少SO2排放量约50%。与平均SO2排放量相比，自形黄铁矿的SO2排放量略高，而交代黄铁矿的SO2排放量较低，这可能是由于伴生元素（Ti、F、K、Al等）的影响。对整个NSP水泥生产线的脱硫反应和熟料化的影响。该关系式可用于根据石灰石的硫特性预测SO2的排放量，为水泥工业合理利用高硫石灰石提供依据。
In a properly operated new suspension preheater (NSP) cement line, the SO2emission is mainly originated from sulfides in the raw meal, and limestone, occupying about 85% wt. of the raw meal, is the dominant sulfur source. However, the sulfur characteristics of limestones and then their influences on the SO2emission have not been clarified yet. In the present study, 80 NSP cement lines with SO2emission >200 mg/Nm3were recorded, the sulfur content and species as well as pyrite morphology of limestones were analyzed and then correlated to their resulting SO2emission. The results show that the SO2emission of stack gas increases linearly with the SO3content of limestone used, and sulfates lead to a 50% reduction in SO2emission relative to sulfides. Compared with average SO2emission, euhedral pyrite leads to a slightly higher SO2emission, whereas metasomatic pyrite results in a lower SO2emission, which can be attributed to the effects of accompanying elements (Ti, F, K, and Al etc.) on the desulfurization reaction and clinkerization in the whole NSP cement line. The relationships proposed can be used to predict the SO2emission based on the sulfur characteristics of limestone and to rationally utilize high-sulfur limestone in cement industry.
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DOI：
10.3133/b1214d
发表时间：
1966
期刊：
--
影响因子：
--
作者：
A. Vlisidis
通讯作者：
A. Vlisidis
影响因子：
5.3
作者：
O. Lapina;B. Bal’zhinimaev;S. Boghosian;K. M. Eriksen;R. Fehrmann
通讯作者：
O. Lapina;B. Bal’zhinimaev;S. Boghosian;K. M. Eriksen;R. Fehrmann
影响因子：
1.6
作者：
L. Kacimi;A. Simon‐Masseron;A. Ghomari;Z. Derriche
通讯作者：
L. Kacimi;A. Simon‐Masseron;A. Ghomari;Z. Derriche
影响因子：
2.8
作者：
Hiroyuki Kamata;H. Ohara;Katsumi Takahashi;Akinori Yukimura;Y. Seo
通讯作者：
Hiroyuki Kamata;H. Ohara;Katsumi Takahashi;Akinori Yukimura;Y. Seo
有机质和矿物成分对页岩孔隙结构的影响——鄂尔多斯盆地湖相页岩与四川盆地海相页岩对比研究
影响因子：
2.7
作者：
Tang Xianglu;Jiang Zhenxue;Li Zhuo;Jiang Shu;Peng Yongmin;Xiao Dianshi;Xing Fengcun
通讯作者：
Xing Fengcun