文献类型：专利

英文题名：Method for simultaneously removing nitrogen oxide and sulfur dioxide exhaust emissions from power plant, involves enabling solution and exhaust gases containing sulfur dioxide and nitric oxide to react in reactor

作者：YUAN W;LONG X;DONG L

机构：[1]UNIV EAST CHINA SCI&TECHNOLOGY

申请号：CN101773770-A

申请日：2009-11-18

公开日：2010-07-14

语种：英文

收录：DERWENT

摘要：NOVELTY - The method involves enabling solution and exhaust gases containing sulfur dioxide and nitric oxide to react in a reactor with temperature of 10 to 90 degree centigrade. Absorption solution is used to absorb sulfur dioxide and nitric oxide, where the absorption solution is aqueous solution containing ferrous salt, nitrilotriacetic acid and desulfurizer that is ammonium sulfate, divalent metal oxides, hydroxides or carbonates. The nitric oxide is changed from gaseous phase into liquid phase by using iron nitrilotriacetate. USE - Method for simultaneously removing nitrogen oxide and sulfur dioxide exhaust emissions from a power plant. ADVANTAGE - The method utilizes sulfite produced through dissolution of sulfur dioxide in the absorption solution as reducing agent to realize recycling of nitric oxide absorption solution, absorption and reduction of nitric oxide and absorption and oxidation of sulfur dioxide, thus reducing pollution controlling cost of nitrous oxide and sulfur dioxide. DETAILED DESCRIPTION - The divalent metal oxides are calcium oxides, magnesium oxides or calcium carbonates. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view illustrating a method of simultaneously removing nitrogen oxide and sulfur dioxide exhaust emissions from a power plant.