期刊
CHEMICAL ENGINEERING JOURNAL
卷 296, 期 -, 页码 191-198出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2016.03.091
关键词
Hydrogen; Pyrolysis; Reforming; Plastic waste; Conical spouted bed; Ni catalyst
资金
- Ministry of Economy and Competitiveness of the Spanish Government [CTQ2013-45105-R, CTQ2014-59574-JIN]
- EDRF funds
- Basque Government [IT748-13]
- University of the Basque Country [UFI 11/39]
A continuous process has been developed consisting in the flash pyrolysis (500 degrees C) of high density polyethylene (HDPE) in a conical spouted bed reactor (CSBR) followed by steam reforming in a fluidized bed reactor (Ni commercial catalyst). The effect reforming temperature in the 600-700 degrees C range, space time from 2.1 to 20.8 scat min g(HDPE)(-1) and steam/plastic ratio between 3 and 5 have on product yields and gas composition has been studied. The continuous pyrolysis-reforming process performs well, with no operational problems and attaining complete HDPE conversion. Under the optimum conditions, i.e., 700 degrees C, space time 16.7 g(cat) min g(HDPE)(-1) and steam/plastic of ratio 5, the H-2 yield was 92.5% of that corresponding to stoichometry, which accounts for a H-2 production of 38.1 g per 100 g of HDPE in the feed. (C) 2016 Elsevier B.V. All rights reserved.
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