Non-catalytic pyrolysis of scrap tires using a newly developed two-stage pyrolyzer for the production of a pyrolysis oil with a low sulfur content

被引:75
作者
Choi, Gyung-Goo [1 ]
Oh, Seung-Jin [1 ]
Kim, Joo-Sik [1 ]
机构
[1] Univ Seoul, Dept Energy & Environm Syst Engn, 90 Jeonnong Dong, Seoul 130743, South Korea
关键词
Scrap tire; One-stage pyrolysis; Two-stage pyrolysis; Pyrolysis oil; Sulfur; Limonene; FLUIDIZED-BED REACTOR; WASTE TYRE PYROLYSIS; FUEL PRODUCTION; THERMAL-DEGRADATION; CO-PYROLYSIS; DIESEL FUEL; LIQUID; DESULFURIZATION; OPTIMIZATION; CATALYSTS;
D O I
10.1016/j.apenergy.2016.02.119
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The aim of this work was to reduce the sulfur content of pyrolysis oil derived from the scrap tire pyrolysis. In this respect, a series of pyrolysis experiments was conducted in both a fluidized bed reactor (one-stage pyrolysis) and a newly developed two-stage pyrolyzer consisting of an auger reactor and a fluidized bed reactor in series (two-stage pyrolysis). The one-stage pyrolysis was carried out at similar to 500 and similar to 600 degrees C with different fluidizing gases (N-2 and product gas). In the experiments, the pyrolysis oil obtained at similar to 500 degrees C had a lower sulfur content than that produced at similar to 600 degrees C. N-2 was better at producing a low-sulfur pyrolysis oil than product gas. The sulfur contents of the oils obtained from the one-stage pyrolysis ranged from 0.75 to 0.92 wt.%. The two-stage pyrolysis was conducted using product gas as the fluidizing medium at different auger reactor temperatures (similar to 230-450 degrees C) and at a constant fluidized bed reactor temperature (similar to 510 degrees C). A pyrolysis oil containing only 0.55 wt.% of sulfur could be produced at the temperatures of the auger reactor of similar to 330 degrees C and fluidized bed reactor of similar to 510 degrees C. Moreover, the two-stage pyrolysis could produce an oil with a low nitrogen content (0.28 wt.%). A pyrolysis oil obtained from the auger reactor contained DL-limonene up to 50 wt.%. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码:140 / 147
页数:8
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