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Plastic recycling application
Jul 20, 2018

Recycled materials

The rise in global crude oil prices, the price of plastic products, one of the petroleum derivatives, has naturally risen, and the recycling of waste plastics has also been mentioned as the primary position. The recycling and recycling of waste plastics has been widely adopted by modern industrial enterprises. After the waste plastics are sorted by manual screening, they are also subjected to crushing, granulation, modification and other processes to become various transparent opaque plastic granules, and then classified according to the phase, and finally become recyclable materials that can be reused.


fuel

Initially, plastic recycling used a large amount of landfill or incineration methods, resulting in huge waste of resources. Therefore, foreign countries use waste plastics for blast furnace injection instead of coal, oil and coke, for cement rotary kiln instead of coal-fired cement, and for making solid waste fuel (RDF) for power generation.


RDF technology was originally developed by the United States. In recent years, in view of the shortage of landfills and the treatment of chlorine-containing waste plastics in the incinerator, HCI has caused serious corrosion to the boilers, and dioxin pollution environment is generated during the combustion process, and the characteristics of high-heating values of waste plastics are mixed. Combustible waste is made of heat generation 20933kJ/kg and RDF with uniform particle size, even if chlorine is obtained


Dilution, but also easy to store, transport and supply coal for other boilers and industrial furnaces.


The blast furnace injection waste plastic technology is also a new method for treating waste plastics by using waste plastics as a raw material to make a suitable particle size into the blast furnace to replace coke or pulverized coal. The application of waste plastics in foreign blast furnaces shows that the utilization rate of waste plastics reaches 80%, and the discharge amount is 0.1%-1.0% of the incineration amount, resulting in less harmful gases and lower processing costs. The blast furnace injection of waste plastic technology has opened up a new way for the comprehensive utilization of waste plastics and the treatment of “white pollution”, and also provided a new means for energy saving and efficiency improvement of metallurgical enterprises. Germany and Japan have had successful applications since 1995.