| 摘要 |
The invention relates to a process for continuous production of chlorine dioxide by allowing sodium chlorate, sulfuric acid and a reducing agent to react in a reactor (1) at atmospheric or nearly atmospheric pressure, by continuously feeding an inert gas into the reactor, the temperature being 30 - 100 DEG C, from which reactor (1) the gas mixture containing mainly chlorine dioxide and inert gas is directed <i>via</i> a scrubber (3) to an absorption tower (4), where the chlorine dioxide is absorbed, and by feeding the reaction solution containing unreacted sodium chlorate from reactor (1) into reactor (2), into which a reducing agent and an inert gas are added, from which reactor (2) the gas mixture containing mainly chlorine dioxide and inert gas is directed <i>via</i> the scrubber (3) to the absorption tower (4). The reducing agent used in reactor (1) is sulfur dioxide and methanol and the reducing agent used in reactor (2) is hydrogen peroxide. |
