Journal
ENERGY CONVERSION AND MANAGEMENT
Volume 237, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.enconman.2021.114105
Keywords
Waste tire; Pressurized pyrolysis; In-line cracking; Hot char; Steam reforming
Categories
Funding
- Key Program for China-EU International Cooperation in Science and Technology Innovation [2018YFE0117300, 2019YFE0123200]
- Shaanxi Provincial Natural Science Foundation Research Program-Shaanxi Coal Joint Fund [2019JLZ-12]
- Foundation of State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering [2021K24]
- Instrument Analysis Center of Xi'an Jiaotong University
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This study investigated the pressurized pyrolysis of side wall rubber (SWR) combined with pressurized in-line catalytic cracking and catalytic steam reforming. The results showed that pressure, pressurized hot char, and Water/SWR ratio had significant impacts on the product distribution. The yield of single ring aromatics was increased significantly by pressurized pyrolysis.
In this paper, the pressurized pyrolysis of side wall rubber (SWR), integrated with pressurized in-line catalytic cracking and catalytic steam reforming over hot in-situ char, was studied. The influence of three factors (pressure, pressurized hot char and Water/SWR ratio) on the product distribution of SWR pyrolysis was evaluated. High activity and selectivity of pressurized SWR hot char were characterized. The results showed that the yield of pyrolysis gas decreased with pressure increase. The content of CH4 in syngas could reach 60 vol% in the pressurized in-line cracking process. C2-C3 in syngas could reach 40 vol% in the pressurized pyrolysis. In the pressurized catalytic steam reforming process, the content and low heating value (LHV) of syngas reached 17.34 vol % and 6.84 kJ/g with a 25.0% Water/SWR ratio, respectively. The yield of single ring aromatics increased from 11.7% to 47.1% after pressurized pyrolysis at 0.1?2.0 MPa. After in-line steam reforming, the concentration of oxygenates in oil was far lower than that of in pressurized pyrolysis oil. The moisture content in oil was only 0.39 wt% after in-line catalytic cracking at 1.0 MPa.
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