Waste incineration will no longer produce dioxins thanks to the production of new technologies

     Dioxin, anyone who knows a little about it knows that it is a highly toxic chemical substance. In people’s impression, it is called “the most toxic poison on the earth”, causing cancer, affecting reproduction and heredity, which is its frightening side. However, in the process of urban development, dioxin always appears, and waste incineration power generation is an important source of it. How can waste incineration prevent dioxin pollution? On September 9th, the reporter learned from Shandong University of Science and Technology that the research team led by Professor Tian Yuanyu from the clean energy research center of the school took 10 years of research and experimentation and made breakthrough progress in waste classification pyrolysis gasification technology. . Not only has it avoided the generation of dioxins in waste incineration, but also produced industrial gas and construction materials. The new technology is expected to bring about 10 million yuan in economic benefits each year.

         In modern cities, garbage disposal is always a problem, especially in terms of eliminating secondary pollution. There are not many effective methods. At present, there are three main methods for domestic garbage disposal: landfill, incineration for power generation, and biogas generation. “But these methods have drawbacks.” Professor Tian said, landfill will pollute underground soil, groundwater, and occupy the land; the production of biogas can only treat a part of the garbage, and many of them cannot be degraded; “Incineration for power generation will produce dioxins. Britain, this kind of substance will greatly pollute the air environment, and it will also enter water and soil, which is extremely harmful to the human body.”

　　 In order to avoid dioxin pollution from waste disposal, Professor Yu Tian Yuan has been looking for a way for many years, and finally made a breakthrough in waste classification pyrolysis gasification technology. “The biggest highlight of this technology is to avoid the generation of dioxin from the source. The traditional waste incineration power generation technology is carried out in an oxidizing atmosphere. “As long as the combustion temperature is between 350℃ and 450℃, In the presence of chlorine and olefins (or aromatics), dioxins are unavoidable. However, in the incineration of hydropyrolysis and gasification, the absence of oxygen eliminates the conditional factors for the generation of dioxin, thereby avoiding the generation of dioxin at the source of waste incineration. Using pyrolysis gasification technology for waste incineration and avoiding the formation of dioxin is a major breakthrough. In addition, it also brings actual economic benefits. “In the process of waste incineration, large amounts of methane, carbon monoxide, and hydrogen are produced, which can be used for industrial gas. At the same time, ash is also produced at the end of the process, which can be used as building materials, just like bricks.

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