FIELD: gas purification. SUBSTANCE: invention is dealing with electrical treatment of gases containing sulfur dioxide to remove high-resistance dust in order to dedust gas outbursts in various areas. In particular, dust-gas stream wetted to value at least 90% and containing sulfur dioxide is passed through barrier discharge zone. Stream is treated in such a way until sulfur trioxide content in stream achieves value 0.003-0.005 vol.%. EFFECT: increased purification degree.
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