State Key Laboratory of Heavy Oil, China University of Petroleum (East China), 266580 Qingdao, China.
State Key Laboratory of Heavy Oil, China University of Petroleum (East China), 266580 Qingdao, China.
Waste Manag. 2019 Mar 15;87:512-524. doi: 10.1016/j.wasman.2019.02.038. Epub 2019 Feb 22.
An integrated thermal treatment (coupled pyrolysis and combustion) of oil sludge (OS) was proposed for enhancing the OS resource utilization. According to the pyrolysis experiment results, the integrated thermal treatment process of OS was modeled and simulated using Aspen Plus. Carbon flow, heat distribution, energy flow, energy efficiency and exergy efficiency of the process were analyzed and discussed. The results indicated that the simulation values were consistent with the experimental ones within the pyrolysis temperature of 00-780 °C With the increase of pyrolysis temperature, the carbon flow of pyrolysis oil was firstly increased and then sharply decreased, and the maximum value was achieved at 600-650 °C. Carbon flow of pyrolysis gas was initially increased rapidly followed by a continuously decreasing growth rate, and then increased sharply above 650 °C. The maximum heating value of pyrolysis oil was obtained at 600 °C. When pyrolysis temperature exceeded 650 °C, both the pyrolysis gas production rate and the gas heating value were improved. The energy and the exergy efficiency of the system can reach values as high as 61-68% and 56-71%, respectively, and the maximum efficiencies were achieved at the pyrolysis temperature of 650 °C. The present work could provide valuable insights towards promoting the development of effective OS utilization processes in the near future.
提出了一种油泥（OS）的综合热解（热解和燃烧耦合）处理方法，以提高 OS 的资源利用率。根据热解实验结果，使用 Aspen Plus 对 OS 的综合热解处理过程进行了建模和模拟。分析和讨论了过程中的碳流、热量分布、能量流、能量效率和火用效率。结果表明，在 00-780°C 的热解温度范围内，模拟值与实验值一致。随着热解温度的升高，热解油的碳流先增加后急剧减少，在 600-650°C 达到最大值。热解气的碳流起初迅速增加，然后增长率持续下降，在 650°C 以上急剧增加。热解油的最大发热值出现在 600°C。当热解温度超过 650°C 时，热解气的产率和气体发热值都得到了提高。系统的能量和火用效率可分别达到 61-68%和 56-71%的高值，在 650°C 的热解温度下达到最大值。本工作可为今后有效推广油泥利用工艺提供有价值的见解。
