Reduction Rate and Crushing Strength of a Carbon-Containing Pellet Prepared by the Impregnation Method of COG Tar
Reduction Rate and Crushing Strength of a Carbon-Containing Pellet Prepared by the Impregnation Method of COG Tar
复制标题
COG焦油浸渍法制备含碳球团矿的还原率和抗碎强度
DOI：
10.1021/acs.energyfuels.5b03009
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发表时间：
2016
期刊：
影响因子：
5.3
通讯作者：
T. Akiyama
中科院分区：
文献类型：
--
作者：
Y. Mochizuki;M. Nishio;N. Tsubouchi;T. Akiyama
研究了由冷固结球团（CP）和焦炉煤气（COG）焦油制备的含碳球团（复合）的抗压强度和还原率。随着焦油与炭的混合比的增加，炭的孔径分布峰值在2nm左右，当混合比大于1.0时，炭的孔径分布峰值完全消失，SBET和VBJH值分别<1 m2/g和<0.01cm3/g。复合材料的抗压强度随着焦油与CP的混合比的增加而增加，当混合比大于2.0时，抗压强度从1.0 daN变为10 daN。在复合颗粒的表面上以及颗粒内部检测到来自焦油的碳质材料，并且复合颗粒中的C含量为22质量%-C。当复合材料在He和55%H2/He中加热时，CO、CO2和H2O的析出分别在约400和500 °C开始，并且形成曲线显示在约400 ° C和500 °C处有一个大峰。
The crushing strength and reduction rate of a carbon-containing pellet (composite) prepared from a cold-bonded pellet (CP) and coke oven gas (COG) tar are examined. The peak of the pore size distribution profile, at approximately 2 nm, observed in the as-prepared CP decreases with the increase in the mixture ratio of tar to CP and completely disappears for the composites prepared above a mixture ratio of 1.0, and the SBET and VBJH values are <1 m2/g and <0.01 cm3/g, respectively. The crushing strength of the composites increases with the increase in the mixture ratio of tar to CP and becomes 10 daN from 1.0 daN, above a mixture ratio of 2.0. Carbonaceous material derived from tar is detected on the surface of the composite particle, as well as inside the particle, and the C content in the composite is 22 mass%-C. When the composites are heated in He and 55%H2/He, the evolution of CO, CO2, and H2O starts at approximately 400 and 500 °C, respectively, and the formation profiles indicate a large peak at appr...