锅炉烟气除尘改造及脱硫脱硝工程技术方案

烟台**供热有限责任公司

虎山二期2×100t/h锅炉除尘、脱硝、

脱硫工程

技术标书

2015-07-15

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