Preparation of a Carbon-Containing Pellet with High Strength and High Reactivity by Vapor Deposition of Tar to a Cold-Bonded Pellet
Preparation of a Carbon-Containing Pellet with High Strength and High Reactivity by Vapor Deposition of Tar to a Cold-Bonded Pellet
复制标题
焦油气相沉积冷粘球团制备高强度高反应性含碳球团
DOI：
10.1021/acs.energyfuels.7b00680
复制
发表时间：
2017
期刊：
影响因子：
--
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
采用石英流动固定床反应器研究了气相沉积法将焦炉煤气焦油中的含碳物质完全填充到冷固结球团孔隙中制备含碳球团（复合材料）的最佳工艺条件。碳质材料的分布和复合材料的抗压强度，然后通过N2吸附测量，扫描电子显微镜配备能量色散X射线光谱仪，和拉伸和压缩试验机对制备的复合材料进行了研究。在通过在700 °C下的焦油热解和在350 °C下的气相沉积的组合制备的复合材料的情况下，观察到10 daN的最大压碎强度;该值与具有相同粒度级的商业冶金焦炭的最大压碎强度相匹配。此外，在原始CP中观察到的2 nm孔在制备的复合材料中不存在。碳质材料来源于钽。
The optimum conditions for the preparation of carbon-containing pellets (composites) in which the carbonaceous materials derived from coke oven gas (COG) tar are completely filled into the pores of cold-bonded pellets (CPs) by vapor deposition are first investigated using a flow-type quartz fixed-bed reactor. The distribution of carbonaceous material and the crushing strength of the composites are then investigated against prepared composites by means of N2 adsorption measurements, scanning electron microscopy equipped with energy-dispersive X-ray spectroscopy, and a tensile and compression testing machine. The maximum crushing strength of 10 daN is observed in the case of the composite prepared by a combination of tar pyrolysis at 700 °C and vapor deposition at 350 °C; this value matches the maximum crushing strength of commercial metallurgical coke with the same size fraction. Moreover, the 2 nm pores observed in the original CP are absent in the prepared composite. Carbonaceous material derived from ta...