文献类型：期刊文献

英文题名：Co-pyrolysis of residual oil and polyethylene in sub- and supercritical water

作者：Bai, Fan[1];Zhu, Chun-Chun[1];Liu, Yin[1];Yuan, Pei-Qing[1];Cheng, Zhen-Min[1];Yuan, Wei-Kang[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2013

卷号：106

起止页码：267

外文期刊名：FUEL PROCESSING TECHNOLOGY

收录：;EI(收录号：20125015778763);WOS:【SCI-EXPANDED(收录号:WOS:000314191800034)】；

基金：This work was supported by the Fundamental Research Funds for the Central Universities, the Shanghai Science and Technology Committee (Grant No. 09ZR1407500) and the CNPC Innovation Foundation (2011D-5006-0406).

语种：英文

外文关键词：Co-pyrolysis; Supercritical water; Polyethylene; Residual oil

摘要：At the temperature of 693 K and water densities from 0.10 to 030 g/cm(3), co-pyrolysis of residual oil and polyethylene in sub- and supercritical water (sub-CW and SCW) was experimentally investigated. With the increase in water density, the phase structure of the co-pyrolysis system may evolve from a liquid/liquid/solid three-phase structure to a liquid/solid two-phase one. By co-pyrolysis of polyethylene with residual oil, H-rich paraffins, the main pyrolysis product of polyethylene, are released continuously into the reaction system. At higher water densities with the favorable liquid/solid two-phase structure, the contact of aromatic radicals from the pyrolysis of residual oil and paraffins from that of polyethylene is promoted, ensuring the coupling between pyrolysis networks of residual oil and polyethylene. Consequently, dealkylation of aromatic radicals may follow the desired mechanism by which the production of coke-inducing components is effectively depressed. A significantly reduced coke yield is observed in the co-pyrolysis of residual oil and polyethylene in sub-CW and SCW. (C) 2012 Elsevier B.V. All rights reserved.