Arc Plasma Method for Neutralizing Freon Gas - October 1998

Arc Plasma Method for Neutralizing Freon Gas - October 1998

The arc plasma method for neutralizing Freon gas is a technology that uses extremely high temperatures generated by arc plasma to efficiently break down Freon gases, compared to conventional methods. Freon gases, including CFCs (chlorofluorocarbons) and HCFCs (hydrochlorofluorocarbons), which are widely used in refrigerants, air conditioners, and refrigeration equipment, are known to deplete the ozone layer and contribute to global warming. This technology has been particularly advanced by Japanese company Sumitomo Heavy Industries and implemented in a treatment facility in Chiba Prefecture.

Arc plasma generates temperatures exceeding 5000°C, which completely breaks down the molecular bonds of Freon gases. As a result, the by-products are transformed into harmless gases such as fluorine, reducing the release of harmful substances into the atmosphere, compared to chemical treatments and low-temperature incineration methods. The system has a processing capacity of approximately 1000 kg of Freon gas per hour, and it has also been adopted at waste treatment facilities in Tokyo and Kanagawa Prefecture.

What makes this technology unique is its ability to completely break down hazardous substances like Freon at high temperatures. Conventional methods often produce harmful by-products, but arc plasma eliminates this risk, making it a groundbreaking innovation. The technology was trialed at some facilities in Tokyo, with plans to expand nationwide by 2010.