| Abstract [eng] |
With the rising of social urbanization, also rises the quantity of used car tires. One of several ways to utilise them is recycling tiers by shredding them and then using these residual rubber, textile and metal fractions as an alternative fuel source. After reviewing the processes of gathering and using such resources, the paper analyses the possibilities of recycling tire rubber, metallic cords and textile cord waste residuals acquired while shredding tires littered with non-decomposed rubber threads into products, suited for producing fuel. The process of utilising tire textile as an alternative fuel source is complicated by the by their pollution with attached bits of rubber regenerates that are hard to strain out, therefore, additional costs are required to utilise this secondary textile fibre. For these reasons, textile waste from tires is often being used for heating by burning it or is being stored in waste sites unused. A couple of years ago, Lithuanian company “Akmenės Cementas” stopped burning tires polluted with textile waste because of it resulting in great number of inorganic waste (ashes), that significantly litters incineration system equipment. For these reasons, the research in new possibilities to utilise such waste in Lithuania is a very important topic. Research publications related to the topic, tire recycling technology and use of utilised tire waste have been reviewed. The aim of this paper is to analyse the possibilities of recycling textile waste of used tires for use as secondary fuel by means of thermolysis without additional cleaning. Thermolysis (thermal decomposition) of used tire textile cord waste was performed and studied at the laboratory of Laboratory of recast technology of the oil and alternative energy resources of Department of Organic Chemistry of Faculty of Chemical Technology of Kaunas University of Technology. The process of thermolysis was performed by using a 3000 cm3 in volume semi-continuously operational vertical reactor in normal pressure at the temperature of 550 C. The properties of products acquired by means of thermolysis were studied with known standard methods. |
