Boreskov Institute of Catalysis of the Siberian Branch of Russian ...

PP-V-7METHOD FOR COMPLEX PROCESSING OF POLYMERIC WASTESINTO FUEL FRACTIONSI.S. Korneev, S.N. Hinskiy, R.A. Kozlovsky, J.P. Suchkov, V.F. Shvets, I.V. Danilov*,A.M. Sidorov*, N.M. Yuzhnov*D.I. Mendeleev University of Chemical Technology of Russia, Chair of PetrochemicalSynthesis, 9 Miusskaya Square, Moscow, 125047, Russia,tel/fax: +7(499)978-95-54, e-mail: kra@muctr.edu.ru*Research and Development Institute of Power Engineering, Russia, 107140 Moscow,M. Krasnoselskaya ul., build. 2/8, e-mail: danilov@nikiet.ruIntroductionAt present time one of the main ecological problems is permanently growing volume ofpolymeric wastes. There are several methods for utilization or treatment of those: recycling,burial, combustion, processing into useful products. Evidently the burial and combustion areeco-faulty technologies and recycling and processing are more ecological friendly ones. Theproblem is that only a limited part of plastics can be recycled. Hence it would be preferred therest amount of wastes to be converted into useful products. Today the main trend indevelopment of such technologies is toward processing of polymeric wastes into hydrocarbonmaterial which can be used as source for fuel fractions.In this report two lab-scale installations for thermal-catalytic processing of somepolymers are presented.Experimental sectionTwo installations were built up: (1) Reaction-distilling unit consists of batch-type reactorsupplied with stirrer and reflux column. Thermal-catalytic destruction proceeds at temperature380-430 °C. The reflux column provides to output target fraction of products having boilingpoint lower then 350 °C. (2) Screw-type unit contains reactor and product’s separatingsystem. The cylindrical horizontal reactor is supplied with screw which allows feeding withdifferent capacity depending on speed of rotation of screw. This reactor is very suitable whilepolymer destruction is accompanied by higher coke formation (more then 2%) and while feedstock contains solid filler materials.As a feed stock the following materials were used: PE, PP, PS, tire-cover rubber (totalsulfur content is 1.3-1.4 %) and isoprene rubber (total sulfur content is 0.7-0.8 %).As a catalyst we tested solid materials based on chromium oxide, zinc oxide andmagnesia supported on solid carrier. As an adsorbent for sulfur-containing substances wetested solid systems containing Ca, Mg, Zn, Al and their oxides.469