Citation: WANG Zhi-gang, BAI Jin, KONG Ling-xue, LI Huai-zhu, BAI Zong-qing, LI Wen. Regulation of high temperature flow properties of ash containing V and Ni[J]. Journal of Fuel Chemistry and Technology, ;2017, 45(10): 1164-1171. shu

Regulation of high temperature flow properties of ash containing V and Ni

1.
Department of Chemistry, Dezhou University, Dezhou 253023, China
2.
State Key Lab of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China

Corresponding author: BAI Jin, stone@sxicc.ac.cn
Received Date: 10 June 2017
Revised Date: 17 August 2017

Fund Project: the National Natural Science Foundation of China 21406254the National Natural Science Foundation of China 21706027The project was supported by the Natural Science Foundation of Shandong Province (ZR2016BL23), the National Natural Science Foundation of China (21706027, 21476247 and 21406254) and Science and technology project of Dezhou university (2016kjrc11)the National Natural Science Foundation of China 21476247Science and technology project of Dezhou university 2016kjrc11The Natural Science Foundation of Shandong Province ZR2016BL23

Figures(10)

Three ashes containing V and Ni were preparation for the study. CaO addition and coal ash blending were chosen for regulation of high temperature flow properties. The regulation mechanism was explored by XRD, SEM-EDX and ternary phase diagram analysis. The results show that karelianite and Ni are main refractory matters in petroleum coke ash at high temperature. CaO addition and coal ash blending decrease the liquid temperatures of ash components except V and Ni, which reduces the ash fusion temperatures. When the contents of V and Ni are fewer than 30% in ash, CaO can obviously decrease the fusion temperature of ash, and the viscosity-temperature property becomes crystal type. When the contents of V and Ni are higher than 30% in ash, coal ash blending is an effective method to decrease the fusion temperature. In this condition, 5% of coal ash blending ratio is required, and its viscosity-temperature property is suitable for slag tapping, but when the coal ash proportion is 10% the viscosity-temperature property of ash becomes crystal type for the precipitation of vanadium-rich spinel, which cannot meet the requirement of slag tapping.
- ash,
- fusion property,
- viscosity-temperature property,
- regulation
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沈阳化工大学材料科学与工程学院沈阳 110142