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Continuous Pyrolysis Technology for Oily Sludge Treatment in the Chain-Slap Conveyors

Author

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  • Xinxin Tang

    (Key Laboratory of High-Efficiency and Clean Mechanical Manufacture, School of Mechanical Engineering, Shandong University, Jinan 250061, China)

  • Xuesong Wei

    (Key Laboratory of High-Efficiency and Clean Mechanical Manufacture, School of Mechanical Engineering, Shandong University, Jinan 250061, China)

  • Songying Chen

    (Key Laboratory of High-Efficiency and Clean Mechanical Manufacture, School of Mechanical Engineering, Shandong University, Jinan 250061, China)

Abstract

In the process of petroleum exploitation, the annual production of oily sludge in China’s petroleum exploitation industry alone has exceeded one million tons, which causes great harm to the environment. In order to face this problem, a variety of treatment methods have been sprung out, but the most of them are polluting the local soil and groundwater eco-environment. Pyrolysis technology for sludge treatment has several advantages, which have already made it a mainstream approach attracting worldwide attention. In this work, oily sludge from Yanshan Petrochemical Company was processed at the newly developed industrial-scale reactor. The sludge transportation in the whole system was achieved by the use of chain plate conveying, which has the advantages of preventing coking, effective sealing of sludge inlet and outlet, etc. First, lab-scale experiments were carried out at temperatures between 450 °C and 600 °C to obtain the best reaction conditions in the industrial-scale equipment. It was found that the maximum pyrolysis oil yield of 17.1 wt.% was obtained at 500 °C. The properties of oily sludge and related compositional characterization of the products (permanent gas, pyrolysis oil, and pyrolysis char) after the treatment were comprehensively analyzed. The study showed that the oily sludge in the reactor was completely converted, and resource utilization of the feedstock could be realized.

Suggested Citation

  • Xinxin Tang & Xuesong Wei & Songying Chen, 2019. "Continuous Pyrolysis Technology for Oily Sludge Treatment in the Chain-Slap Conveyors," Sustainability, MDPI, vol. 11(13), pages 1-10, July.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:13:p:3614-:d:244666
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    References listed on IDEAS

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    1. Geraldo Cardoso de Oliveira Neto & Luiz Eduardo Carvalho Chaves & Luiz Fernando Rodrigues Pinto & José Carlos Curvelo Santana & Marlene Paula Castro Amorim & Mário Jorge Ferreira Rodrigues, 2019. "Economic, Environmental and Social Benefits of Adoption of Pyrolysis Process of Tires: A Feasible and Ecofriendly Mode to Reduce the Impacts of Scrap Tires in Brazil," Sustainability, MDPI, vol. 11(7), pages 1-18, April.
    2. Daya Shankar Pandey & Giannis Katsaros & Christian Lindfors & James J. Leahy & Savvas A. Tassou, 2019. "Fast Pyrolysis of Poultry Litter in a Bubbling Fluidised Bed Reactor: Energy and Nutrient Recovery," Sustainability, MDPI, vol. 11(9), pages 1-17, May.
    3. Rubab Sarfraz & Siwei Li & Wenhao Yang & Biqing Zhou & Shihe Xing, 2019. "Assessment of Physicochemical and Nutritional Characteristics of Waste Mushroom Substrate Biochar under Various Pyrolysis Temperatures and Times," Sustainability, MDPI, vol. 11(1), pages 1-14, January.
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    Cited by:

    1. Chien Li Lee & Chih-Ju G. Jou, 2022. "Producing Refuse Derived Fuel with Refining Industry Oily Sludge and Mushroom Substrates," Energies, MDPI, vol. 15(24), pages 1-8, December.
    2. Qian Yang & Chenxi Zhang & Lei Li & Weijie Xu, 2020. "Anaerobic Co-Digestion of Oil Sludge with Corn Stover for Efficient Biogas Production," Sustainability, MDPI, vol. 12(5), pages 1-9, March.

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