A method for the purification of sulfur hexafluoride - gas mixtures.

摘要

The present invention relates to a process for the purification of sulfur hexafluoride. Sulfur hexafluoride is used, for example, in production plants, in electrical switchgear or gas-insulated lines as a protection -, - insulating and light arc extinguishing gas application.The contaminated sulfur hexafluoride - a gas mixture is by means of known process steps such as gas scrubbing, adsorption and / or membrane separation is cleaned, whereby according to the invention, the gas mixture is subjected to an additional photolytic treatment.In accordance with the invention, the high voltage tests in which is formed by means of electrical breakdowns highly toxic s₂F₁₀ photolytically destroyed.The photolytic treatment is carried out with uv - light of a wavelength of about 250 μm.