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    黄胜, 吴幼青, 吴诗勇, 高晋生, 向军, 张军营. 高温气相炭化焦的物理结构及CO2气化活性[J]. 华东理工大学学报(自然科学版), 2011, (1): 26-31.
    引用本文: 黄胜, 吴幼青, 吴诗勇, 高晋生, 向军, 张军营. 高温气相炭化焦的物理结构及CO2气化活性[J]. 华东理工大学学报(自然科学版), 2011, (1): 26-31.
    HUANG Sheng, WU You-qing, WU Shi-yong, GAO Jin-sheng, XIANG Jun, ZHANG Jun-ying. Physical Structures and CO2 Gasification Activity of Gas-PhaseCarbonization Chars Prepared at High Temperatures[J]. Journal of East China University of Science and Technology, 2011, (1): 26-31.
    Citation: HUANG Sheng, WU You-qing, WU Shi-yong, GAO Jin-sheng, XIANG Jun, ZHANG Jun-ying. Physical Structures and CO2 Gasification Activity of Gas-PhaseCarbonization Chars Prepared at High Temperatures[J]. Journal of East China University of Science and Technology, 2011, (1): 26-31.

    高温气相炭化焦的物理结构及CO2气化活性

    Physical Structures and CO2 Gasification Activity of Gas-PhaseCarbonization Chars Prepared at High Temperatures

    • 摘要: 以石油醚和蒽油为原料,在炭化温度为1 000~1 300 °C的条件下制备了两种气相炭化焦,主要考察了这两种高温气相炭化焦的物理结构和CO2气化活性,并与液相炭化焦和煤焦进行了对比。结果表明:石油醚气相炭化以裂解和缩聚反应并存,而蒽油气相炭化以缩聚反应为主;两种气相炭化焦的颗粒均为均匀的球形颗粒(粒径为0.1~0.5 μm),且随炭化温度增加,颗粒粒径减小,焦块结构趋于致密化;炭化温度增加有利于气相炭化焦的碳微晶结构向有序化方向发展,在相同炭化温度下,气相炭化焦最具石墨化倾向,液相炭化焦次之,煤焦最小;炭的气化活性不是仅由碳微晶结构唯一决定的,不同炭化过程所形成焦的气化活性顺序为:煤焦>气相炭化焦>液相炭化焦。

       

      Abstract: Two kinds of gas-phase carbonization chars, respectively using petroleum ethers and anthracene oils as raw materials, were prepared in the carbonization temperature of 1 000—1 300 °C. The physical structure and CO2 gasification activity of these chars were mainly investigated, and then were compared with those of liquid-phase carbonization chars and coal chars. The main conclusions were drawn as follows. There co-existed the cracking and polymerization reactions in the gas-phase carbonization of petroleum ethers, and the gas-phase carbonization of anthracene oils was mainly dominated by the polymerization reaction. The particles (diameter of 0.1—0.5 μm) from the two kinds of gas-phase carbonization chars presented uniformly spherical. With the increasing carbonization temperature, the diameter of char particles decreased and the mass of chars became denser in the gas-phase carbonization process. An elevated carbonization temperature was favorable for a more ordered carbon micro-crystalline structure of gas-phase carbonization chars. At the same carbonization temperature, the graphitization tendency of gas-phase carbonization chars was the largest, followed by that of liquid-phase carbonization chars, and that of coal chars was the least. The micro-crystalline structure of carbon was not the exclusive factor affecting its gasification activity. The gasification activities of chars prepared in different carbonization processes presented the following order: coal chars>gas-phase carbonization chars>liquid-phase carbonization chars.

       

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