Disposal of the hottest PVC waste in European coun

2022-08-17
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The average life cycle of durable products, which accounts for more than half of PVC consumption, is about 34 years. This durable vinyl plastic was produced and sold in the 1960s - when the plastic boom began - and is now beginning to enter a period of waste flooding. The hill of PVC waste we see now is only the first stage of the impending crisis

so what are we going to do with these wastes? Where is the solution? Because PVC, like most plastics, does not degrade rapidly, there are three main options: burial, incineration or recycling

at present, 10000 tons of PVC waste have been landfilled, but at the same time, only 100000 tons of waste have been recycled, and only 600000 tons of waste have been incinerated. The European Commission will take measures to make the landfill law less attractive (because it can not finally solve the problem of environmental hazards). Similarly, the incineration law does not count on the final solution of the problem. In this regard, recycling may become the most effective solution, but in the current EU countries, recycling is still at a low level, with the amount of recycling less than 3% of the total

worldwide, there are more than 150 million tons of long-life PVC products, most of which are used in the parts of buildings, which will form the waste hill of PVC in the coming years. According to the increasing products, this hill will double in 2005, and the world will enter the PVC waste period and have to deal with about 300 million tons of PVC waste. In industrialized countries, the increase of a large amount of PVC waste has exceeded the production of PVC. The most concerned fact is that the PVC industry is booming in Latin America and Asia, so that the final waste mountain will be produced in these parts of the world. A large number of PVC products will become waste in the coming years, and the growing PVC production projects show that the phasing out of PVC is also urgently needed. Only in this way can we stop a growing, dangerous and difficult waste problem

there are two recovery methods of PVC: mechanical recovery and feed recovery. The mechanical recycling process refers to the direct recycling of plastics, which turns discarded materials into plastic pellets. However, these recycled pellets should be replaced and put into the plastic production process to form new products. Feed recycling is especially used for wastes that are not suitable for mechanical recycling. PVC is decomposed at high temperature, and its chemical composition is reduced. In the recovery of feed rich in PVC, hydrochloric acid (HCI) is the main familiar technical index, working performance, use method, precautions and chemical agent for recovery, and then it is reused as a raw material in the production process of PVC

in fact, at present, less than 1% of PVC can be recycled in essence. This kind of PVC waste product cannot be recycled to the original quality, because PVC needs pure PVC to get the same quality. This kind of product is mainly used for "descending cycle" or products that "the bearings at both ends of the secondary shaft have been oiled when leaving the factory", such as park benches and highway fences

many Recycled PVC products have been re added with toxic heavy metal compounds or other stabilizers, which are more dangerous compounds in the secondary products

is recycling not the final solution? Of course not, but there are some interesting trends that are conducive to good solutions. When we recycle plastic products (not only PVC), we will find the best solution, not only from the perspective of economy, but also from the perspective of environment and energy utilization. If the use of energy recycling plastics has a greater impact on the environment than the production of new plastic products, it is meaningless to use a large amount of energy to recycle Limited plastic products. Before we recycle, we can take better measures, such as reusing the energy used to make plastics. We can recycle plastic, but we don't need to recycle it by descending. This requires complex production methods to truly restore the original product and reuse it as an equivalent article

in Ferrara, Italy, a factory specialized in recycling PVC has been built. The Recycled PVC is consistent with the original product in quality and has incomparable performance with other heat insulation materials. Therefore, the economic value of the products produced by recycling also proves that the operation of the factory has good reasons. This factory also put forward a new view that when 8500 tons or 9000 tons of PVC are recycled every year, we can reduce our sensitivity to changes in raw material costs

similarly, this technology can also produce PVC with extraordinary quality, opening a door for the production of novel and original application methods. At the same time, Belgium's schalvai group has also invented a new method to deal with PVC waste materials, namely the "ethylene cycle" technology. This technology can not only deal with composite PVC waste materials, but also produce high-value Recycled PVC. "Ethylene cycle" technology makes use of the characteristics of PVC (selective solubility), separates PVC materials from other materials, and produces renewable materials comparable to new PVC. Recently, the group has cooperated with frara company in Italy to build the first "ethylene recycling" device, which is worth 12million euros. The annual treatment capacity of waste cables is 15000 tons, and 10000 tons of Recycled PVC can be obtained at the same time

if we want human beings to make a choice between cheap, superior performance and environmental protection and health, I think we will not hesitate to choose the latter. Although we have not found a reasonable and effective method to solve the toxicity problem of polyvinyl chloride plastics, scientists will eventually give humans an answer, either stop the production and use of polyvinyl chloride plastics, or use alternative raw materials Improve the preparation methods... In a word, what human beings need is a healthy living environment. The day to completely solve the contradiction of PVC should not be far away

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