Pyrolysis of waste tyres with zeolite USY and ZSM-5 catalysts

Shen, Bo; Chunfei, Wu; Guo, Baochun; Wang, Rui; Liangcai,

doi:10.1016/j.apcatb.2006.07.006

Cited by 102 publications

(46 citation statements)

References 21 publications

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“…Similar results were reported in the study of Miguel et al [4]. Besides, the pore size and silica to alumina ratio of the zeolite catalysts affected strongly on the production and selectivity of aromatic compounds in the pyrolysis of waste tire [5]. However, the oil has been investigated for its potential as a chemical feedstock rather than fuel.…”

Section: Introductionsupporting

confidence: 62%

“…Besides, it has been known that the pore size plays a very important role in the activity of catalyst due to the shape selectivity [21][22][23]. Furthermore, Boxiong et al [5] studied the pyrolysis of waste tire using ZSM5 and USY, and found that USY with a larger pore size produced a higher amount of aromatics in the light fraction than ZSM5. Therefore, the larger pore size of ITQ-24, as compared to ITQ-21, should be responsible for the higher amount of aromatic produced in the case of HMOR + 2%ITQ-24.…”

Section: Catalystmentioning

confidence: 98%

See 1 more Smart Citation

Effects of ITQ-21 and ITQ-24 as zeolite additives on the oil products obtained from the catalytic pyrolysis of waste tire

Dũng

Mhodmonthin

Wongkasemjit

et al. 2009

Journal of Analytical and Applied Pyrolysis

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Section: Introductionsupporting

confidence: 62%

Section: Catalystmentioning

confidence: 98%

Effects of ITQ-21 and ITQ-24 as zeolite additives on the oil products obtained from the catalytic pyrolysis of waste tire

Dũng

Mhodmonthin

Wongkasemjit

et al. 2009

Journal of Analytical and Applied Pyrolysis

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“…The formation of coke and catalyst deactivation in catalytic pyrolysis is considerably influenced by the type of catalyst, reactor configuration and process condition. Most of the earlier studies on the two-stage approach utilized two separate fixed beds [10,34] or fluidized bed coupled with a fixed bed [31,44,46,47]. In general, fluidized bed operations are preferred because it produces relatively lesser coke and reduces catalyst deactivation compared with fixed beds.…”

Section: Introductionmentioning

confidence: 99%

Catalytic conversion of biomass to bio-syncrude oil

Mante

Agblevor

2011

Biomass Conv. Bioref.

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The conversion of biomass to transportation fuels and chemicals has been of immense interest in recent years. In this study, the production of high quality bio-oil (biosyncrude oil) was achieved by catalytically cracking pyrolysis vapors from hybrid poplar in a dual-fluidized bed reactor. The catalytic deoxygenation of the primary pyrolysis vapors was achieved with a commercial HZSM-5 at 425-450°C. The organic, water, char, coke, and gas yields were 11.9, 20.9, 16.5, 3.8, and 46.8 wt.%, respectively. This work demonstrated that the use of a fluidized bed reactor for the catalytic upgrading reduces coke formation and increases catalyst lifetime. The concentration of the permanent gases was in the order of CO> CO 2 > C 3 H 6 > CH 4 > H 2 > other C 2 -C 4 . The light biosyncrude (LBS) oil collected from the condenser was predominately aromatic hydrocarbons. The heavy biosyncrude (HBS) oil collected from the electrostatic precipitator consisted of mainly phenols, methylsubstituted phenols, naphthalenes, benzenediols, and naphthalenol. The bio-syncrude oils were low in oxygen, less viscous, less acidic, stable, and high in energy density. The higher heating value of the light and heavy biosyncrude oil was 36.89 and 33.98 MJ/kg, respectively. The distillate yields from the atmospheric distillation showed that 91 wt.% of the LBS oil distills up to 220°C and 76 wt. % of the HBS oil distills up to 440°C. Accelerated stability test of the oils at 90°C for 24 h and storage of the oils at room temperature for 10 months showed that the bio-syncrude oils were stable. The catalytic deoxygenation of the pyrolysis vapors resulted in the removal of undesirable oxygenates such as levoglucosan, carboxylic acids, aldehydes, and ketones. The bio-syncrude oil can be considered as a suitable feed for use in a petroleum refinery for the production of transportation fuels and chemicals.

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“…At over 500°C there is no effect of temperature on gas and liquid yields which were about 17 and 38%, respectively. Besides, catalysts have been applied in several studies for upgrading the quality and quantity of the products obtained from waste tire pyrolysis [6][7][8].…”

Section: Introductionmentioning

confidence: 99%