期刊
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
卷 112, 期 -, 页码 66-73出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jaap.2015.02.020
关键词
Co-pyrolysis; Kinetic; Polyethylene; Starch biomass; Interaction
资金
- Major State Basic Research Development Program of China [2011CB201502]
- National Natural Science Foundation of China [51206095]
The interactions between high density polyethylene (HDPE) and potato during their primary and secondary co-pyrolysis process were investigated by a thermogravimetric analyzer (TGA) and a tubular furnace. Kinetic analysis has shown that the devolatilization of potato was relatively faster compared to those of cellulosic materials, which has been ascribed to the multi-side-chain structure and lower polymerization degree of starch. The pyrolysis process of potato can be divided into three stages, and the main thermal degradation took place between 178 and 378 degrees C, while the HDPE decomposition occurred in a single stage in the temperature range of 380-517 degrees C. In the case of blends, the weight loss differences (SW) between experimental and theoretical ones were less than 18% in all cases, and the co-pyrolysis process of potato and HDPE can be described as two consecutive first order reactions, the apparent activation energies of blends were almost invariable, suggested that only physical step limitation was found in the primary co-pyrolysis process of potato and HDPE. On the contrary, the results of tubular furnace experiment showed that due to the relatively long gas resident time, the interaction occurred in the gas phase not only favored the formation of gaseous products, but also improved the bio-oil quality by significantly reducing the oxygen-to-carbon ratios (O/C) of the pyrolysis oil. (C) 2015 Elsevier B.V. All rights reserved.
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