Waste recycling is an eternal topic of human being. Because more and more waste produced with the development of economic and improvement of life quality. In this article, I’d like to talk about the recycling of plastic and rubber waste, and what is the best method for disposal of plastic and rubber waste.
Plastic and rubber waste
Landfill is one of the rubber and plastic waste disposal methods commonly used all the time. But now we are more and more aware that landfill just solve the waste problem temporarily, because it will take up to 450 years for plastic to break down(to biodegrade), and rubber will take much longer time, so landfill is not the best method for disposal of plastic and rubber waste, and this way cannot bring any economic interest to human being.
Plastic and rubber waste landfill
Material recycling is another rubber and plastic waste disposal method. Waste plastic can be recycled through granulating and used for raw material of new plastic. But before using as the raw material, waste plastic should be sorted, cleaned, shredded and palletized. The process is quite complicated and needs high investment. Besides, only few plastic is suitable for pelleting, so this way cannot effectively manage waste plastic. Waste rubber recycling is mainly through re-treading. Take waste tyre for example, waste tyre is re-used for vehicles after re-treading and even sold as new tyre which is actually not illegal to some extent, because the waste tyre after re-treading even has serious quality problem, it is not safe for such tyre running again on the road. Therefore, material recycling is also not the best method for disposal of plastic and rubber waste.
Pyrolysis is a newborn rubber and plastic waste disposal method. It is a energy renewable process which can convert plastic and rubber waste into fuel oil. Since both rubber and plastic are composed of high-molecular polymer, through thermal pyrolysis, the long-chain polymer will break down into synthetic oil gas and finally condensed into fuel oil. Before pyrolysis, hardly need any pretreatment to rubber and plastic waste, they can be directly put into a batch pyrolysis reactor to produce fuel oil. The fuel oil got from plastic and rubber waste can be used as diesel and coal substitute for industrial heating.
Pyrolysis equipment for disposal of plastic and rubber waste
By contrast, pyrolysis is the best method for disposal of plastic and rubber waste and it is also the one with best economical benefit.