HEAT TRANSFER SIMULATION AND ENERGY ANALYSIS OF RADIATIVE PYROLYSIS OF OILY SLUDGE

SONG Zhanlong; TAO Shuanghua; XU Baolin; ZHAO Xiqiang; SUN Jing; MAO Yanpeng; WANG Wenlong; YU Jun

doi:10.13205/j.hjgc.202402009

Volume 42 Issue 2

Feb. 2024

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2024 > 42(2): 73-81

SONG Zhanlong, TAO Shuanghua, XU Baolin, ZHAO Xiqiang, SUN Jing, MAO Yanpeng, WANG Wenlong, YU Jun. HEAT TRANSFER SIMULATION AND ENERGY ANALYSIS OF RADIATIVE PYROLYSIS OF OILY SLUDGE[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(2): 73-81. doi: 10.13205/j.hjgc.202402009

Citation:

SONG Zhanlong, TAO Shuanghua, XU Baolin, ZHAO Xiqiang, SUN Jing, MAO Yanpeng, WANG Wenlong, YU Jun. HEAT TRANSFER SIMULATION AND ENERGY ANALYSIS OF RADIATIVE PYROLYSIS OF OILY SLUDGE[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(2): 73-81. doi: 10.13205/j.hjgc.202402009

Citation:

SONG Zhanlong, TAO Shuanghua, XU Baolin, ZHAO Xiqiang, SUN Jing, MAO Yanpeng, WANG Wenlong, YU Jun. HEAT TRANSFER SIMULATION AND ENERGY ANALYSIS OF RADIATIVE PYROLYSIS OF OILY SLUDGE[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(2): 73-81. doi: 10.13205/j.hjgc.202402009

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HEAT TRANSFER SIMULATION AND ENERGY ANALYSIS OF RADIATIVE PYROLYSIS OF OILY SLUDGE

doi: 10.13205/j.hjgc.202402009

1. Shandong Key Laboratory of Energy Carbon Emission Reduction Technology and Resource Utilization, Engineering Research Center of Environmental Thermal Technology Ministry of Education, National Engineering Laboratory of Coal Emission Reduction, Shandong University, Ji' nan 250061, China;
2. Shandong Environmental Protection Scientific Research and Design Institute Co., Ltd., Ji'nan 250013, China

Received Date: 2023-08-24
Available Online: 2024-04-28

Abstract

Abstract

Aiming at the complexity of oily sludge radiation pyrolysis, the temperature field and heat transfer characteristics inside the pyrolysis furnace are unknown. The temperature distribution inside the pyrolysis furnace and the heating characteristics of the materials under different factors were investigated by Fluent software, using double Eulerian model, DO radiation model and multi-component model. The results indicate that the temperature distribution of the sludge in the furnace was divided into two stages of heating and constant temperature with the cut-off point of L/D=10, and 600 ℃ was the optimal pyrolysis final temperature. Meanwhile, higher water content prolongs the sludge pyrolysis time, while lowering the screw speed reduces the amount of final sludge remaining. In addition, setting a heat shield above the radiation tube can significantly improve the uniformity of the entire furnace temperature distribution. Finally, the total recovered energy of the pyrolysis products was 6592.25 kJ through the energy balance analysis of the whole pyrolysis system, with a maximum energy recovery rate of 82%. Among them, the pyrolysis gas energy accounts for 65.78%~90.11% of the total energy input of the system, which can greatly reduce the external energy supply required by the system.
- oily sludge,
- radiation pyrolysis,
- numerical simulation,
- temperature distribution,
- energy recover

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References(32)

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