链条锅炉烟气净化系统升级改造及其减排效果  

Upgrade and Transformation of Chain Boiler Flue Gas Purification System and Its Emission Reduction Effect

作　　者：陈新虎 范冬琪 Chen Xinhu;Fan Dongqi(Shuifa Planning and Design Co.,Ltd.,Shandong Jinan 250031;General Technology Group Engineering Design Co.,Ltd.,Shandong Jinan 250031)

机构地区：[1]水发规划设计有限公司,山东济南250031 [2]通用技术集团工程设计有限公司,山东济南250031

出　　处：《山东煤炭科技》2023年第12期153-156,160,共5页Shandong Coal Science and Technology

摘　　要：随着污染物排放指标提高,鄂尔多斯市转龙湾煤炭有限公司燃煤蒸汽链条锅炉烟气净化系统需提标改造,采取增加喷淋层提高液气比、增加烟气导流板优化烟气流场、修正塔体烟气进口角度等脱硫塔改造措施提高脱硫效率,通过改造布袋除尘器增加布袋过滤面积降低过滤风速,增加管束除雾器等措施提高除尘效果,新增臭氧脱硝系统提高脱硝效率。改造后运行效果:标准状态下,NO_(x)排放浓度由250 mg/m^(3)降低到50 mg/m^(3)以下,SO_(2)排放浓度由60 mg/m^(3)降低到35 mg/m^(3)以下,粉尘排放浓度由25 mg/m^(3)降低到10 mg/m^(3)以下。每年可减少SO_(2)排放量为15.12 t,减少烟尘排放量为9.07 t,减少NO_(x)排放量为120.96 t,减排效果明显。With the improvement of pollutant emission indicators,the flue gas purification system of the coal-fired steam chain boiler of Ordos city Zhuanlongwan Coal Co.,Ltd.needs to be upgraded and renovated.Renovation measures of the desulfurization tower such as increasing the spray layer to increase the liquid gas ratio,increasing the flue gas guide plate to optimize the flue gas flow field,and correcting the inlet angle of the flue gas in the tower body,and so on are taken to improve the desulfurization efficiency.The dust removal effect can be improved by measures such as renovating the bag dust collector,increasing the bag filter area,reducing the filter wind speed,increasing the tube bundle fog remover and so on,and adding an ozone denitration system to improve denitration efficiency.After the renovation,the operating effect under standard conditions is that the NO_(x) emission concentration is reduced from 250 mg/m^(3) to below 50 mg/m^(3),the SO_(2) emission concentration is reduced from 60 mg/m^(3) to below 35 mg/m^(3),and the dust emission concentration is reduced from 25 mg/m^(3) to below 10 mg/m^(3).The annual reduction in SO_(2) discharge amount is 15.12 t,smoke and dust discharge amount is 9.07 t,and NO_(x) discharge amount is 120.96 t.The emission reduction effect is significant.

关 键 词：蒸汽链条锅炉 提标改造 喷淋塔 臭氧 

分 类 号：X701[环境科学与工程—环境工程]