Effects of O2 on Characteristics of Sulfur Added to Petroleum Coke through Reaction with SO2
Effects of O2 on Characteristics of Sulfur Added to Petroleum Coke through Reaction with SO2
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DOI：
10.1021/ie101388q
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发表时间：
2010-11
影响因子：
4.2
通讯作者：
Eric A. Morris;C. Jia;Kazuki Morita
中科院分区：
文献类型：
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作者：
Eric A. Morris;C. Jia;Kazuki Morita
阿尔伯塔油砂石油焦是沥青改造后的丰富副产品。目前的研究旨在改善目前对通过与二氧化硫（SO2）反应添加到石油焦表面的硫以及大量过量氧气（O2）如何影响硫的理解。特别着重于焦炭颗粒中硫的分布和形态，以及它的热稳定性。在600 ~ 800℃的填充床反应器中，用SO2和无O2对石油焦进行活化。采用电子探针微量分析（EPMA）、x射线光电子能谱（XPS）、热重分析（TGA）和差示扫描量热法（DSC）对活性焦炭进行了表征。活化焦炭颗粒的EPMA横截面分析表明，在有氧和无氧条件下均可生产富硫焦炭颗粒（即SIAC）。在低SO2（3%）、高O2（18%）条件下，600℃时O2与焦炭发生竞争性反应，SO2仅反应生成硫-…
Alberta oil-sands petroleum coke is an abundant byproduct of the upgrading of bitumen. The current study aims to improve the current understanding of sulfur added to the surface of petroleum coke through reaction with sulfur dioxide (SO2) and how this is affected by a large excess of oxygen (O2). Particular focus is given to the distribution and speciation of sulfur within the coke particles, as well as its thermal stability. Petroleum coke was activated in SO2 with and without O2 in a packed bed reactor at 600−800 °C. The activated cokes were characterized with electron probe microanalysis (EPMA), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). Cross-sectional analysis with EPMA of activated coke particles revealed that sulfur-rich coke particles (i.e., SIAC) could be produced with and without O2. Under low SO2 (3%), high O2 (18%) conditions, however, O2 competitively reacted with coke at 600 °C, and SO2 only reacted to form a sulfur-...