Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Municipal plastic waste

Other carbonaceous materials such as municipal waste plastics, cel-hilosics, and used motor oils may also serve as cofeedstocKs with coal in this technology. [Pg.2374]

THERMAL AND CATALYTIC DEGRADATION OF MUNICIPAL WASTE PLASTICS INTO FUEL OIL... [Pg.65]

This comprehensive article supplies details of a new catalytic process for the degradation of municipal waste plastics in a glass reactor. The degradation of plastics was carried out at atmospheric pressure and 410 degrees C in batch and continuous feed operation. The waste plastics and simulated mixed plastics are composed of polyethylene, polypropylene, polystyrene, polyvinyl chloride, acrylonitrile butadiene styrene, and polyethylene terephthalate. In the study, the degradation rate and yield of fuel oil recovery promoted by the use of silica alumina catalysts are compared with the non-catalytic thermal degradation. 9 refs. lAPAN... [Pg.65]

Municipal waste plastic is a mixture of polymers, which contains about 3-5% ABS (134). Mixtures similar to the composition of a typical municipal waste, containing high density poly(ethylene), PP, PS and ABS with a brominated flame retardant were thermally degraded at 450°C. [Pg.255]

Coprocessing of waste plastics with heavy petroleum fractions have considerable interest in feedstock recycling. In this study, we aimed to investigate the processing of municipal waste plastics (MWP) in presence of conventional and non-conventional catalysts in a refinery stream. For this purpose, the hydrocracking of MWP in vacuum gas oil (VGO) over metal loaded active carbon and conventional acidic catalysts (HSZM-5, DHC-8) was carried out to obtain liquid fuel. 2 refs. [Pg.48]

It seems that fluid-bed cracking reactor (thermal or catalytic) is the best solution for industrial scale. However, regeneration and circulation of so-called equilibrium cracking catalyst is possible for relatively pure feeds, for instance crude oil derived from vacuum gas oils. Municipal waste plastics contain different mineral impurities, trace of products and additives that can quickly deactivate the catalyst. In many cases regeneration of catalyst can be impossible. Therefore in waste plastics cracking cheap, disposable catalysts should be preferably applied. Expensive and sophisticated zeolite and other molecular sieves or noble-metal-based catalysts will find presumably limited application in this kind of process. The other solution is thermal process, with inert fluidization agent and a coke removal section or multi-tube reactor with internal mixers for smaller plants. [Pg.122]

S. KargOz, T. Karayildirim, S. Ucar, M. Yuksel, and J. Yanik, Liquefaction of municipal waste plastics in VGO over acidic and non-acidic catalysts. Fuel, 82, 4, 415 (2003). [Pg.126]

L. Wheatley, Y. A. Levendis, P. Vouros Exploratory-study on the combustion and PAH emissions of selected municipal waste plastics. Environmental Science and Technology, 27(13), 2885-2895 (1993). [Pg.191]

Liquefaction of Municipal Waste Plastics over Acidic and Nonacidic... [Pg.209]

T. Bhaskar, M. A. Uddin, K. Murai, J. Kaneko, K. Hamano, T. Kusaba, A. Muto and Y. Sakata, Comparison of thermal degradation products from real municipal waste plastic and model mixed plastics. J. Analytical and Applied Pyrolysis, 70, 579-587, (2003). [Pg.311]

Waste-plastic-derived oil that was prepared by thermal degradation of municipal waste plastics at 410°C was dehydrochlorinated to remove chloroorganic compounds using various catalysts such as iron oxide, iron oxide-carbon composite, ZnO, MgO and red mud. The iron oxide catalysts were effective in removing the chloroorganic compounds. MgO and ZnO catalysts were deactivated during the reaction by HCl, which is produced by the dehydrochlorination of chloroorganic compounds. Iron oxide and its carbon composite were found to be stable in the dehydrochlorination of municipal waste plastic derived oil [19]. [Pg.407]

N. Lingaiah, M. A. Uddin, A. Muto, T. Imai, and Y. Sakata, Removal of organic chlorine compounds by catalytic dehydrochlorination for the refinement of municipal waste plastic derived oil. Fuel 80, 1901 (2001). [Pg.432]

The thermal degradation of PE mixed with polyethylene terephthalate (PET) and PE only degradation were compared. The presence of small amounts of PET is quite possible with the mixture of PE, PP, and PS, which is generally considered as municipal waste plastics. The yields of product gases, liquids and residues from the degradation of PET and the mixtures of PET and PE in ratios of 1 9 and 2 8 are shown in Table 18.4. Unlike PE or PVC, no liquid products could be obtained from the degradation of PET. The decomposition of PET proceeds with the production of a large amount of pale yellow... [Pg.508]

The reaction of various metal oxides with hydrogen chloride and the reverse reactions have been extensively smdied [47] the reaction behavior of hydrogen chloride with various bivalent and trivalent metal oxides has been reported. Sakata et al. reported the spontaneous degradation of municipal waste plastics at low temperature [48] and also the dechlorination of chlorine compounds from PVC mixed plastics-derived oil using solid sorbents [22], Courtemanche and Levendis [49] reported the control of HCl emission from the combustion of PVC by in-fumace injection of calcium-magnesium-based sorbents at gas temperatures of 850 and 1050°C. In the present study, the adsorption temperature 350°C was found to be optimum for the complete removal of hydrogen chloride at moderate concentrations (1820 ppm). [Pg.511]

MWP = municipal waste plastics were supplied by Sapporo city, Japan "G = 100-(L + R) ... [Pg.524]

Y. Sakata, Md. A. Uddin, A. Muto, K. Koizumi, M. Narazaki, K. Murata, and M. Kaji, Thermal and catalytic degradation of municipal waste plastics into fuel oil, Polym. RecycL, 2, 309-315 (1996). [Pg.526]


See other pages where Municipal plastic waste is mentioned: [Pg.19]    [Pg.497]    [Pg.48]    [Pg.49]    [Pg.49]    [Pg.351]    [Pg.113]    [Pg.119]    [Pg.209]    [Pg.211]    [Pg.213]    [Pg.215]    [Pg.217]    [Pg.219]    [Pg.221]    [Pg.223]    [Pg.495]    [Pg.496]    [Pg.521]    [Pg.524]    [Pg.555]   


SEARCH



Field Assessment of Plastic Types in Municipal Solid Waste

Liquefaction of Real Municipal Waste Plastics

MUNICIPAL WASTE

Municipal

Municipal waste plastics collection costs

Municipal waste plastics pyrolysis

Plastics fraction of municipal solid waste

Plastics in Municipal Solid Waste

Plastics in municipal waste

© 2024 chempedia.info