β Scribed by Shen Boxiong; Wu Chunfei; Liang Cai; Guo Binbin; Wang Rui
No coin nor oath required. For personal study only.
In this paper, an ultrastable Y-type (USY) zeolite was investigated with two-staged pyrolysis-catalysis of waste tyres. Waste tyres were pyrolysed in a fixed bed reactor and the evolved pyrolysis gases were passed through a secondary catalytic reactor. The main objective of this paper was to obtain high concentration of certain aromatic hydrocarbons suitable to be used as a chemical feedstock rather than a liquid fuel, and the influence of catalyst/tyre ratio on the product yield and composition of derived oils. The light fraction (boiling point < 220 8C) was distilled from the derived oil prior to be analyzed with gas chromatography/mass spectrometry (GC/MS). It showed that the increase of catalyst/tyre ratio resulted in high yield of gas at the expense of the oil yield. The high catalyst/tyre ratio favored to increase the concentration of light fraction (<220 8C) in oil. Increasing the catalyst/tyre ratio resulted in significant changed in the concentration of benzene, toluene, xylenes and the alkyl aromatic compounds. For benzene and toluene, the highest concentration was obtained at the catalyst/tyre ratio of 0.5. The concentration of xylenes increased with the increasing of catalyst/tyre ratio.
π SIMILAR VOLUMES
Cross-section samples (2-3 cm wide), representative of a whole car tyre, have been pyrolysed under nitrogen in a 3.5 dm 3 autoclave at 300, 400, 500, 600 and 700 β’ C. Over 500 β’ C there is no effect of temperature on gases and liquids yields (β17 and 38%, respectively). Tyre pyrolysis liquids have b
This is the first time that the thermochemical recycling of rubber from old tyres by pyrolysis and the emissions from combustion of the gas obtained in the pyrolytic process have been studied. In tyre pyrolysis, compounds in three phases are obtained: solid, liquid and gas. The solid compounds, appr
This work aimed to study the recovery of three types of waste by the process of pyrolysis: biomass, plastics and used tyres. The effects of experimental conditions in products yield and composition were studied. The increase of reaction time increased alkane content both in gas phase from 53% to 70%
The recovery of high-quality fuel from combustion ash ponds was studied. The pond exploration activities to assess the quantity and quality of unburned C in the active ash disposal sites, and pilot-scale results of C recovery processes that will be used to design the full-scale processing plant, are