首页> 外国专利> Purifying flue gas comprises contacting gas rich in carbon dioxide and containing sulfur dioxide, nitrogen oxides and oxygen with acid, separating sulfuric acid and concentrating gas into sulfur dioxide, nitric oxide and nitrogen dioxide

Purifying flue gas comprises contacting gas rich in carbon dioxide and containing sulfur dioxide, nitrogen oxides and oxygen with acid, separating sulfuric acid and concentrating gas into sulfur dioxide, nitric oxide and nitrogen dioxide

机译:烟气的净化包括使富含二氧化碳且含有二氧化硫,氮氧化物和氧气的气体与酸接触,分离硫酸并将气体浓缩成二氧化硫,一氧化氮和二氧化氮。

摘要

Purifying flue gas (5) rich in carbon dioxide and containing sulfur dioxide (SO 2) and/or nitrogen oxide (NOx) and oxygen comprises: contacting the gas rich in carbon dioxide and containing SO 2, NOx and oxygen with an acid or its mixture; separating the sulfuric acid (15, 25, 35, 41) from gas rich in carbon dioxide; carrying out the contacting step in contactors (1, 2, 3, 4); concentrating the gas into SO 2by recycling a part of the flue gas rich in carbon dioxide; and/or (e) concentrating gas rich in carbon dioxide into nitric oxide and/or nitrogen dioxide. Purifying flue gas (5) rich in carbon dioxide and containing sulfur dioxide (SO 2) and/or nitrogen oxide (NOx) (as nitric oxide (NO) and/or nitrogen dioxide (NO 2)) and oxygen comprises: (a) contacting the gas rich in carbon dioxide and containing SO 2, NOx and oxygen with an acid or a mixture of acid for a duration to transform a part of the SO 2into sulfuric acid; (b) separating the sulfuric acid (15, 25, 35, 41) from gas rich in carbon dioxide to produce a gas depleted in SO 2; (c) carrying out the step in contactors (1, 2, 3, 4) to produce a carbon dioxide enriched gas and depleted in SO 2; (d) concentrating the gas rich in carbon dioxide into SO 2by recycling a part of the flue gas rich in carbon dioxide and/or a part of the gas enriched in carbon dioxide and depleted in SO 2in upstream of the combustion; and/or (e) concentrating gas rich in carbon dioxide into NO and/or NO 2by recycling a gas rich in NO 2derived from gas rich in carbon dioxide depleted in SO 2towards at least one of the contactors.
机译:净化富含二氧化碳且含有二氧化硫(SO 2)和/或氮氧化物(NOx)和氧气的烟道气(5)包括:使富含二氧化碳且含有SO 2,NOx和氧气的气体与酸或其酸接触。混合物;从富含二氧化碳的气体中分离出硫酸(15、25、35、41);在接触器(1、2、3、4)中进行接触步骤;通过回收一部分富含二氧化碳的烟气将气体浓缩为SO 2;和/或(e)将富含二氧化碳的气体浓缩成一氧化氮和/或二氧化氮。净化富含二氧化碳并包含二氧化硫(SO 2)和/或氮氧化物(NOx)(作为一氧化氮(NO)和/或二氧化氮(NO 2))和氧气的烟道气(5)包括:(a)使富含二氧化碳且含有SO 2,NO x和氧的气体与酸或酸的混合物接触一段时间,以将一部分SO 2转化为硫酸; (b)从富含二氧化碳的气体中分离出硫酸(15、25、35、41),以产生贫乏SO 2的气体; (c)在接触器(1、2、3、4)中进行步骤以产生富含二氧化碳并贫化SO 2的气体; (d)通过在燃烧上游再循环一部分富含二氧化碳的烟道气和/或一部分富含二氧化碳并贫化SO 2的烟气,将富含二氧化碳的气体浓缩成SO 2;和/或(e)通过将来自贫SO 2的富含二氧化碳的气体中衍生的富含NO 2的气体向至少一个接触器循环,将富含二氧化碳的气体浓缩为NO和/或NO 2。

著录项

相似文献

  • 专利
  • 外文文献
获取专利

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号