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我国除尘器布袋对烟气排放污染问题的措施

发布时间:2017-05-09
除尘器布袋围绕我国大气污染控制方面的重大需度和   技术前沿,通过关键技术和系统集成,..

我国是世界上少数几个以煤炭为主要能源的   之一,据统计,我国90%二氧化硫、67%氮氧化物、70%烟尘排放量来自于煤炭的燃烧。其中,燃煤电站、燃煤工业锅炉、燃煤炉窑等烟气排放污染问题   为突出。除尘器布袋围绕我国大气污染控制方面的重大需度和   技术前沿,通过关键技术和系统集成,开发具有自主知识产权的燃煤电站、燃煤工业锅炉、燃煤炉窑等烟气排放污染物控制技术与设备,推动我国大气环境质量任务十分迫切。2007年,863计划资源环境技术办公室将“大型燃煤电站锅炉烟气排放控制技术与装备”作为第三批项目,其中课题之一就是“大型燃煤电站锅炉烟气电袋复合除尘技术与装备”I510按照《火电厂大气污染物排放标准)(GB13223-1996)要度:1997年1月1日起环境影响报告书待审查批准的新、扩、改建火电厂锅炉   高允许烟尘排放浓度为200mg/Nm³。而2004年1月1日   又颁布的《火电厂大气污染物排放标准》(GB13223-2003),新标准要度:2005年后新建或改建的燃煤锅炉,原有燃煤电厂锅炉在2010年以前,烟尘允许排放浓度要达到5Omg/Nm以下。

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布袋除尘器是一种干式除尘装置,它适用于捕集细小、干燥非纤维性粉尘。当含尘气体进入布袋除尘器,颗粒大、比重大的粉尘,由于重力的作用沉降下来,落入灰斗,含有较细小粉尘的气体在通过滤料时,粉尘被阻留,使气体净化。

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