The increase in consumption has also led to the emergence of waste plastics, causing serious environmental and resource problems. Based on 36% of waste plastic productivity, my country's annual output of waste plastics is more than 16 million tons. If it is not recycled, it will inevitably cause serious environmental pollution and a great waste of resources.
There are currently three main ways to recycle waste plastics: incineration to recover heat energy, chemical recycling, and material pelletizing and recycling. Today, we will mainly introduce waste plastic incineration and recovery heat energy.
The method of incineration of plastics to recover heat energy has the advantages of large processing volume, low cost, and high efficiency. The disadvantage is that a large amount of toxic and harmful gases are produced. If these toxic and harmful gases are further processed, the follow-up process is very long and the overall economic cost is high. . If it is not treated, although the "white pollution" of plastic is eliminated, new pollution is generated, and environmental protection laws and regulations are not allowed.
In foreign countries, waste plastics have been used in blast furnaces and achieved good results.
There is no introduction of incineration and recovery of heat energy in China, and this method is suitable and reasonable for dirty and severely aging waste plastics. Whether it is suitable and reasonable for cleaner and less aging waste plastics remains to be explored, but it causes a certain waste of resources. Yes yes.
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