Citation: GUO Wen-tao, WANG Jing-song, SHE Xue-feng, XUE Qing-guo, GUO Zhan-cheng. Pore structure and high-temperature compressive strength of gasified coke with CO₂ and steam[J]. Journal of Fuel Chemistry and Technology, ;2015, 43(6): 654-662. shu

Pore structure and high-temperature compressive strength of gasified coke with CO₂ and steam

1.
State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China

Corresponding author: XUE Qing-guo,
Received Date: 24 December 2014
Available Online: 10 March 2015
Fund Project: 国家自然科学基金重点项目(51234001) (51234001)国家自然科学基金委员会与宝钢集团有限公司联合资助项目(51134008)。 (51134008)

By using a coke gasification reaction device and an online measurement apparatus of high-temperature compressive strength, the variation of pore structures of coke after gasification with CO₂ and steam was investigated. In addition, the influences of solution loss rate, temperature and pore structure on the high-temperature compressive strength of coke were also studied. The results show that compared with that in CO₂ gasification, the average pore diameter of coke becomes smaller, and the specific surface and the quantity of pore under 100 μm increase in steam gasification. Meanwhile, the global high-temperature compressive strength becomes higher. After reacting with CO₂ and steam, the high-temperature compressive strength of coke will decrease with the increasing of solution loss or temperature. When the coke is gasified at 1 200 ℃, its work(WOC_u) during deforming process will decrease gradually with solution loss. The work(WOC_u) is higher for steam gasified coke than that for CO₂ gasified coke. The deformation shows a trend of decrease with solution loss. At the same solution loss, compared with that after CO₂ gasification, the damage of pore structure variation to the coke strength after gasification with steam is relatively smaller and the deformation resistance is stronger.
- coke,
- solution loss rate,
- pore structure,
- high-temperature,
- compressive strength
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沈阳化工大学材料科学与工程学院沈阳 110142

Pore structure and high-temperature compressive strength of gasified coke with CO2 and steam

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通讯作者: 陈斌, bchen63@163.com

Pore structure and high-temperature compressive strength of gasified coke with CO₂ and steam