INFLUENCE OF STEEL SLAG ON PYROLYSIS OF OIL TANK BOTTOM SLUDGE IN BEIJING-TIANJIN-HEBEI REGION

LV Wen; JIA Jin-wei; ZHANG Shao-fei; ZHANG Fan; SONG Qiang; GU Qiu-xiang; SHU Xin-qian

doi:10.13205/j.hjgc.202010027

Volume 38 Issue 10

Nov. 2020

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2020 > 38(10): 169-176

LV Wen, JIA Jin-wei, ZHANG Shao-fei, ZHANG Fan, SONG Qiang, GU Qiu-xiang, SHU Xin-qian. INFLUENCE OF STEEL SLAG ON PYROLYSIS OF OIL TANK BOTTOM SLUDGE IN BEIJING-TIANJIN-HEBEI REGION[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(10): 169-176. doi: 10.13205/j.hjgc.202010027

Citation:

LV Wen, JIA Jin-wei, ZHANG Shao-fei, ZHANG Fan, SONG Qiang, GU Qiu-xiang, SHU Xin-qian. INFLUENCE OF STEEL SLAG ON PYROLYSIS OF OIL TANK BOTTOM SLUDGE IN BEIJING-TIANJIN-HEBEI REGION[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(10): 169-176. doi: 10.13205/j.hjgc.202010027

Citation:

LV Wen, JIA Jin-wei, ZHANG Shao-fei, ZHANG Fan, SONG Qiang, GU Qiu-xiang, SHU Xin-qian. INFLUENCE OF STEEL SLAG ON PYROLYSIS OF OIL TANK BOTTOM SLUDGE IN BEIJING-TIANJIN-HEBEI REGION[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(10): 169-176. doi: 10.13205/j.hjgc.202010027

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INFLUENCE OF STEEL SLAG ON PYROLYSIS OF OIL TANK BOTTOM SLUDGE IN BEIJING-TIANJIN-HEBEI REGION

doi: 10.13205/j.hjgc.202010027

1. Central Research Institute of Building and Construction Co., Ltd, MCC Group, Beijing 100088, China;
2. Zhalainuoer Coal Co., Ltd, Ling Quan Coal Mine, Hulunbeier 021410, China;
3. School of Chemical & Engineering, China University of Mining and Technology, Beijing, Beijing 100083, China;
4. School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China;
5. Key Laboratory of Coal Resources Exploration and Comprehensice Utilization, Ministry of Land and Resources, Xi'an 710000, China

Received Date: 2019-09-25

Abstract

Abstract

In order to investigate the effects of steel slag on pyrolysis of oil sludge, the collaborative disposal of oil sludge and steel slag was proposed. We took typical steel slag and oil tank bottom sludge in Beijing-Tianjin-Hebei region as the experimental samples. The effects of the pyrolysis temperature, heating rate, residence time and addition amount of steel slag on pyrolysis products of oil tank bottom sludge in single factor experiments and response surface experiment were conducted using a fixed-bed reactor. In addition, the composition of pyrolysis gases and tar were investigated using GC, GC-MS, SEM and FTIR, respectively. The results showed that with the increase of the pyrolysis final temperature, heating rate and residence time, the pyrolysis tar yield increased first and then decreased. And the pyrolysis tar yield of oil sludge reached the maximum value as the temperature, heating rate and residence time reached 550 ℃, 40 ℃/min and 30min, respectively. Adding steel slag was conducive to increase the weightlessness rate of oil sludge, and the pyrolysis kinetics showed that the apparent activation energy were 8.32 kJ/mol and 7.43 kJ/mol, as the oil sludge pyrolysis (OS) and oil sludge pyrolysis with steel slag(OSSS), respectively. The addition of steel slag promoted the yield of pyrolysis tar and gas, and reduced char yield. The gas composition analysis indicated that steel slag could act as a catalyst in improving the H₂ and CH₄ content and reducing CO₂ content during the pyrolysis process of oil sludge. The addition of steel slag significantly increased the content of short alkanes and increased the C₅~C₁₀ fraction by improving the decomposition of the C₁₅~C₂₀ fraction. It was concluded that the integration of oil sludge pyrolysis with steel slag and the recovery of steel slag from the solid pyrolysis products of oil sludge containing steel slag could be feasible.
- oil tank bottom sludge,
- steel slag,
- pyrolysis

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References(27)

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