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虎山二期2×100t/h锅炉除尘、脱硝、

脱硫工程

技术标书

2015-07-15

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目 录

一、项目概况 ------------------------------------------------------------------------------------------------------- 6 1．项目名称---------------------------------------------------------------------------------------------------------- 6 2．建设单位---------------------------------------------------------------------------------------------------------- 6 3．设计单位---------------------------------------------------------------------------------------------------------- 6 4．项目概况---------------------------------------------------------------------------------------------------------- 6 5．设计思路---------------------------------------------------------------------------------------------------------- 7 二、设计依据、原则、范围和要求 ---------------------------------------------------------------------------- 8 1．设计依据---------------------------------------------------------------------------------------------------------- 8 2．设计原则-------------------------------------------------------------------------------------------------------- 10 3．设计范围-------------------------------------------------------------------------------------------------------- 10 4. 厂址自然条件 -------------------------------------------------------------------------------------------------- 11 5. 工程模式 --------------------------------------------------------------------------------------------------------- 11 三、设计参数 ------------------------------------------------------------------------------------------------------ 12 1．锅炉主要参数 ------------------------------------------------------------------------------------------------- 12 2. 燃烧煤种参数 -------------------------------------------------------------------------------------------------- 12 3. 烟气主要参数 -------------------------------------------------------------------------------------------------- 13 3．设计目标值 ---------------------------------------------------------------------------------------------------- 13 四、工艺方案设计 ------------------------------------------------------------------------------------------------ 14 1．设计思路-------------------------------------------------------------------------------------------------------- 14 2. 除尘技术方案 ------------------------------------------------------------------------------------------------ 15 3. 脱硝技术方案 ------------------------------------------------------------------------------------------------ 15 4．脱硫技术方案 ------------------------------------------------------------------------------------------------- 17 4.1氧化镁法脱硫法 ------------------------------------------------------------------------------------------ 17 4.2氧化镁－氧化镁湿法脱硫工艺流程 ------------------------------------------------------------------ 18 4.3镁法脱硫优点 --------------------------------------------------------------------------------------------- 18 5 . 高压静电湿式除尘（雾）技术 --------------------------------------------------------------------------- 19 6．技术方案特点 ------------------------------------------------------------------------------------------------- 20 6.1独特的预处理室技术 ------------------------------------------------------------------------------------ 20 6.2高效喷射旋流曝气脱硫塔 ------------------------------------------------------------------------------ 20 6.3两段双循环脱硫技术： --------------------------------------------------------------------------------- 21 6.4电除雾技术 ------------------------------------------------------------------------------------------------ 21 7. 几个关键难题的解决 ---------------------------------------------------------------------------------------- 21 7.1系统不结垢、堵塞 --------------------------------------------------------------------------------------- 21 7.2系统不带水 ------------------------------------------------------------------------------------------------ 21 7.3脱硫系统腐蚀、磨蚀问题 ------------------------------------------------------------------------------ 22 7.4耗水量低---------------------------------------------------------------------------------------------------- 22 7.5免维修的耐高温防腐设计 ------------------------------------------------------------------------------ 22 7.6适应烟气在一定范围内的变动 ------------------------------------------------------------------------ 22 五、工艺流程及工艺说明 --------------------------------------------------------------------------------------- 23

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1．工艺流程（见附件） ---------------------------------------------------------------------------------------- 23 2．工艺流程说明 ------------------------------------------------------------------------------------------------- 23 六、除尘工艺单元设计 ------------------------------------------------------------------------------------------ 24 1．布袋除尘器 ---------------------------------------------------------------------------------------------------- 24 2.气体导流系统 --------------------------------------------------------------------------------------------------- 24 3.合理设置和制作花板 ------------------------------------------------------------------------------------------ 25 4.滤袋和笼架 ------------------------------------------------------------------------------------------------------ 25 4.1 滤袋 --------------------------------------------------------------------------------------------------------- 25 4.2笼架 ---------------------------------------------------------------------------------------------------------- 26 5.清灰系统 --------------------------------------------------------------------------------------------------------- 27 6. 采用优质脉冲阀 ----------------------------------------------------------------------------------------------- 27 7. 采用先进的自动控制系统 ---------------------------------------------------------------------------------- 27 七、SNCR工艺单元设计 ----------------------------------------------------------------------------------------- 29 1.SNCR选择性非催化还原脱硝工艺 ------------------------------------------------------------------------- 29 2．氨水溶液卸料与储存模块 ---------------------------------------------------------------------------------- 30 2.1设计参数---------------------------------------------------------------------------------------------------- 30 2.2附属设备---------------------------------------------------------------------------------------------------- 30 3．氨水输送供给模块 ------------------------------------------------------------------------------------------- 30 3.1设计参数---------------------------------------------------------------------------------------------------- 30 3.2附属设备---------------------------------------------------------------------------------------------------- 30 4. 稀释水系统 ------------------------------------------------------------------------------------------------- 31 5．还原剂喷射模块 ---------------------------------------------------------------------------------------------- 31 5.1设计参数---------------------------------------------------------------------------------------------------- 31 5.2附属设备---------------------------------------------------------------------------------------------------- 31 6. 压缩空气系统 -------------------------------------------------------------------------------------------------- 32 6.1设计参数： ------------------------------------------------------------------------------------------------ 32 6.2附属设备： ------------------------------------------------------------------------------------------------ 32 7．冷却风系统 ---------------------------------------------------------------------------------------------------- 32 7.1设计参数---------------------------------------------------------------------------------------------------- 32 7.2附属设备---------------------------------------------------------------------------------------------------- 32 八、脱硫工艺单元设计 ------------------------------------------------------------------------------------------ 33 1. 主要设施设计 ------------------------------------------------------------------------------------------------ 33 1.1 原有麻石塔改造为旋流脱硫塔 ----------------------------------------------------------------------- 33

1.1.1旋流脱硫塔 ----------------------------------------------------------------------------------------------------- 33 1.1.2旋流板塔脱硫装置及构成 ----------------------------------------------------------------------------------- 33 1.1.3旋流板塔脱硫装置的主要参数 ----------------------------------------------------------------------------- 34 1.1.4代表性技术 ----------------------------------------------------------------------------------------------------- 34 1.1.5全面深入的脱硫塔技术 -------------------------------------------------------------------------------------- 34 1.1.6结构特点 -------------------------------------------------------------------------------------------------------- 35 1.1.7技术特点 -------------------------------------------------------------------------------------------------------- 35

1.2新建100t/h链条锅炉脱硫塔 ------------------------------------------------------------------------- 35 1.3脱硫塔前后烟道挡板门 --------------------------------------------------------------------------------- 37

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1.4喷淋层 ------------------------------------------------------------------------------------------------------- 37 1.5工艺水箱---------------------------------------------------------------------------------------------------- 37 1.6除雾器 ------------------------------------------------------------------------------------------------------- 37 1.7膨胀节 ------------------------------------------------------------------------------------------------------- 39 1.8 滤液水箱 --------------------------------------------------------------------------------------------------- 39 1.9湿式电除雾器 --------------------------------------------------------------------------------------------- 40 1.10 脱硫剂制备及供应系统 ------------------------------------------------------------------------------- 40 2. 通用设备设计 -------------------------------------------------------------------------------------------------- 41 2.1循环泵 ------------------------------------------------------------------------------------------------------- 41 2.3脱硫塔搅拌 ------------------------------------------------------------------------------------------------ 42 2.4 Mg(OH)2浆液泵 --------------------------------------------------------------------------------------- 42 2.5泥渣处理系统 --------------------------------------------------------------------------------------------- 43 2.6工艺水泵---------------------------------------------------------------------------------------------------- 44 2.7滤布冲洗水泵 --------------------------------------------------------------------------------------------- 44 2.8喷淋喷嘴---------------------------------------------------------------------------------------------------- 44 2.9水力旋流器 ------------------------------------------------------------------------------------------------ 44 2.11滤液泵 ----------------------------------------------------------------------------------------------------- 45 2.12事故浆液池回流泵 -------------------------------------------------------------------------------------- 46 2.14仓顶袋式除尘器 ----------------------------------------------------------------------------------------- 46 2.15罗茨风机 -------------------------------------------------------------------------------------------------- 46 九、电器设计 ------------------------------------------------------------------------------------------------------ 47 1. 电气及电气设备设计原则 ---------------------------------------------------------------------------------- 47 2. 供电系统设计 -------------------------------------------------------------------------------------------------- 47 3. 电气控制与保护 ----------------------------------------------------------------------------------------------- 48 4. 防雷接地系统设计 ------------------------------------------------------------------------------------------- 48 5. 照明系统设计 -------------------------------------------------------------------------------------------------- 48 6. 电缆和电缆构筑物 ------------------------------------------------------------------------------------------- 49 十、自控及仪表设计 --------------------------------------------------------------------------------------------- 50 1. 概述 -------------------------------------------------------------------------------------------------------------- 50 2. 脱硝系统仪表及控制技术 ---------------------------------------------------------------------------------- 50 3. 脱硫系统仪表及控制技术 ---------------------------------------------------------------------------------- 51 4. 控制要求 -------------------------------------------------------------------------------------------------------- 51 5. 控制方式 -------------------------------------------------------------------------------------------------------- 52 十一、公用工程（土建部分） --------------------------------------------------------------------------------- 53 1.土建部分总述 --------------------------------------------------------------------------------------------------- 53 2.土建部分范围 --------------------------------------------------------------------------------------------------- 53 3.土建设计技术要求 --------------------------------------------------------------------------------------------- 53 4. 给水、排水系统 ----------------------------------------------------------------------------------------------- 54 5. 系统主要构筑物 ----------------------------------------------------------------------------------------------- 54 十二、环境保护、节能、安全、卫生与消防 --------------------------------------------------------------- 55 1．环境保护-------------------------------------------------------------------------------------------------------- 55

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