Evaluation of char fuel ratio in municipal pyrolysis waste

Matsuzawa, Yoshiaki; Ayabe, Muneo; Nishino, Junya; Kubota, Nobuhiko; Motegi, Mikio

doi:10.1016/j.fuel.2004.02.006

Cited by 56 publications

(39 citation statements)

References 14 publications

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“…A possible reason for these increases is the catalytic consequences of hydrochloride evolved from PVC on the formation of char derived from lignocellulosic substrates during pyrolysis. Virtually, this phenomenon is in good accordance to the findings that PVC addition facilitates charring when cellulosic materials decomposing(Matsuzawa et al, 2004) .…”

supporting

confidence: 90%

“…A reduction in E app at high temperatures is expected with the increasing CO 2 percentage. As a case study to analyze the impact of CO 2 amount, experiments were carried out using two species of lignocellulosic substrates that commonly exist and occupy a large fraction in the residues of municipal activities, pinewood sawdust (WS) and paper (Pap) (Matsuzawa et al, 2004), and their chlorinated derivatives were represented by mixtures of biomass with 10wt.% PVC.…”

Section: Introductionmentioning

confidence: 99%

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Comparative investigation on non-isothermal kinetics for thermo-degradation of lignocellulosic substrate and its chlorinated derivative in atmospheres with CO2 participation

2015

Bioresource Technology

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supporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Comparative investigation on non-isothermal kinetics for thermo-degradation of lignocellulosic substrate and its chlorinated derivative in atmospheres with CO2 participation

2015

Bioresource Technology

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“…[20] In two steps thermal degradation, the first step is considered the most important step because in this stage C-Cl bond in the PVC which has less energy than the C-C bond dissociates first resulting into the volatilization of hydrogen chloride molecule. [25,26] This low stability of PVC was explained in terms of defects of the polymer chains. The next step corresponds to the thermal cracking of the carbon chain leading to the formation of flammable volatiles.…”

Section: Polyvinyl Chloridementioning

confidence: 99%

Thermal decomposition study of polyvinyl chloride in the presence of commercially available oxides catalysts

et al. 2017

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The pyrolysis behavior of polyvinyl chloride (PVC) in the presence of commercially available oxides catalysts was investigated using thermogravimetry. The pyrolysis proceeded under a heating rate of 5°C/min in the temperature range of 200-650°C.The thermogravimetric properties in terms of reduction in maximum degradation temperature and percent conversion were studied. The silica gel mesoporous catalyst, with a greater pore size and surface area, was found to be the most active materials in terms of reduction in maximum degradation temperature and increase in percent conversion. The alumina acidic, silica ppt, and alumina neutral catalysts also showed good results; however, their effects were less pronounced as compared to silica gel. The effects of these different catalysts show that surface area, pore size, and number of acidic sites are found to be the major factors for the energy efficient degradation of polymers. K E Y W O R D Scatalytic thermal degradation, number of acidic sites, polyvinyl chloride, pore size, reduction in maximum degradation temperature, surface area

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“…Waste-derived char is considered as a substitute fuel for cement or paper production plants, which also has the potential to be used in coal fired power station (Matsuzawa et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

“…Klass (1998) noted MSW could be one of most prospective sources for energy recovery among available biomass because of its large amount and well-established collection systems for centralized disposal. Many researchers have reported on the usefulness of MSW-derived char as fuel (Vassilev et al, 1999;Malkow, 2004;Matsuto et al, 2004;Matsuzawa et al, 2004;Hwang et al, 2006). The other type of char was derived from automobile shredder residue (ASR).…”

Section: Introductionmentioning

confidence: 99%

Improving the quality of waste-derived char by removing ash

et al. 2008

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This study characterized and removed ash from waste-derived char to improve the quality of char as fuel. Municipal solid waste (MSW) and automobile shredder residue (ASR) were carbonized at 450 o C and at 500 o C respectively in a rotary kiln with a nitrogen atmosphere for 1 h. MSW and ASR char were subjected to sieving and pulverization-sieving to screen incombustibles and the ash-rich fraction, after which float-sink separation, froth floatation, and oil agglomeration were applied to remove ash from the char. The established target quality was less than 30% ash content and more than 20000 kJ/kg heating value. However, the rate of combustibles recovery had to be lowered to produce a good quality of char along with a high heating value. MSW char attained the targeted quality level using froth floatation or oil agglomeration whereas neither separation method was able to make ASR-derived char satisfy the target.Based on the assumption that particle properties of char are determined by the weight ratio of combustibles and ash, the densities of combustibles and ash in char were estimated using the results of float-sink separation, X-ray diffraction (XRD) analysis, and elemental content. To verify the above assumption, an energy dispersive X-ray/scanning electron microscope (EDX/SEM) analyzer was used to observe char particles.

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Evaluation of char fuel ratio in municipal pyrolysis waste

Cited by 56 publications

References 14 publications

Comparative investigation on non-isothermal kinetics for thermo-degradation of lignocellulosic substrate and its chlorinated derivative in atmospheres with CO2 participation

Comparative investigation on non-isothermal kinetics for thermo-degradation of lignocellulosic substrate and its chlorinated derivative in atmospheres with CO2 participation

Thermal decomposition study of polyvinyl chloride in the presence of commercially available oxides catalysts

Improving the quality of waste-derived char by removing ash

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