| 摘要 |
<p>The present invention provides a process used for performing denitration, desulfuration and demercuration processing on exhaust gas and corollary equipment corresponding to the process. The process solves the problem of high power consumption caused by the high-temperature reaction condition. The process comprises: splitting exhaust gas; using split exhaust gas as a carrier gas of an oxidant; heating the split exhaust gas to a decomposition temperature of the oxidant, so as to form hydroxyl and peroxyl-hydroxyl radicals with a stronger oxidizing capability; mixing the radicals in the split exhaust gas with unheated main exhaust gas; enabling the radicals to react with reducing gases such as NOx, SOx and mercury vapor in the exhaust gas, so that the reducing gases are oxidized to be NOx, Sox and mercury ions with a higher oxidation state; and removing all acid products and mercury ions in a subsequent gas washing device. In the method and equipment, only a part of the exhaust gas is used as the carrier of the oxidant, and the oxidant are ionized, thereby significantly reducing the energy required by the oxidization, and effectively eliminating NO2 and Sox and reducing heavy metals such as mercury.</p> |
