CN203946993U - 一种300mw及以上火力发电机组脱硫废水处理装置 - Google Patents
一种300mw及以上火力发电机组脱硫废水处理装置 Download PDFInfo
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- CN203946993U CN203946993U CN201420339239.7U CN201420339239U CN203946993U CN 203946993 U CN203946993 U CN 203946993U CN 201420339239 U CN201420339239 U CN 201420339239U CN 203946993 U CN203946993 U CN 203946993U
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- waste water
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- 239000002351 wastewater Substances 0.000 title claims abstract description 52
- 230000003009 desulfurizing Effects 0.000 title claims abstract description 31
- 238000010248 power generation Methods 0.000 title claims abstract description 8
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- 238000006386 neutralization reaction Methods 0.000 claims abstract description 17
- 238000005507 spraying Methods 0.000 claims abstract description 13
- 239000010881 fly ash Substances 0.000 claims abstract description 8
- 238000005276 aerator Methods 0.000 claims abstract description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound 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- 238000000889 atomisation Methods 0.000 claims description 5
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Abstract
本实用新型公开了一种300MW及以上火力发电机组脱硫废水处理装置，包括废水中和反应池、澄清池、设在烟道入口的空气预热器、设在烟道内的雾化器、设在烟道出口的除尘器以及连通的脱硫塔，所述废水中和反应池的进水管与脱硫塔的排水管相连，澄清池的进水管与废水中和反应池的排水管相连，澄清池通过水泵输送装置和加气装置与雾化器相连。本实用新型具有工艺流程简单，能够简单高效低成本处理脱硫废水，同时彻底解决了高浓度氯离子对环境的影响，实现真正意义上废水的零排放的优点。
Description
技术领域
[0001] 本实用新型属于脱硫废水处理装置，具体一种300MW及以上火力发电机组脱硫废 水处理装置。
背景技术
[0002] 脱硫废水主要是电厂锅炉烟气湿法脱硫(石灰石/石膏法）过程中吸收塔的排放 水。为了维持脱硫装置浆液循环系统物质的平衡，防止烟气中可溶部分即氯浓度超过规定 值和保证石膏质量，必须从系统中排放一定量的废水，废水主要来自石膏脱水和清洗系统。 废水中含有的杂质主要包括悬浮物、过饱和的亚硫酸盐、硫酸盐以及重金属，其中很多是国 家环保标准中要求严格控制的第一类污染物。与传统废水性质差别较大，难于同步处理，不 得不投入大量资金设置独立的脱硫废水处理系统。 实用新型内容
[0003] 本实用新型的目的是针对目前脱硫废水处理成本高，处理效果不理想等情况，提 供一种成本低、处理效果好的300MW及以上火力发电机组脱硫废水处理装置，从而能够低 成本高效率解决脱硫废水处理问题。
[0004] 实现本实用新型目的采用的技术方案如下：
[0005] 本实用新型提供的电厂脱硫废水处理装置，包括废水中和反应池、澄清池、设在烟 道入口的空气预热器、设在烟道内的雾化器、设在烟道出口的除尘器以及连通的脱硫塔，所 述废水中和反应池的进水管与脱硫塔的排水管相连，澄清池的进水管与废水中和反应池的 排水管相连，澄清池通过水泵输送装置和加气装置与雾化器相连。
[0006] 所述废水中和反应池采用由3个隔槽串联组成的三联箱；所述雾化器位置位于空 气预热器后1. 5米位置，水平布置，雾化方向与烟气方向相同。
[0007] 本实用新型的特点在于先用三联箱初步处理脱硫废水，调整脱硫废水的pH，同时 沉降脱硫废水的重金属离子以及脱硫废水的钙镁离子，然后将处理后的脱硫废水进入澄清 池，澄清池用来将沉积物沉降下来，下部的沉淀物浓缩成污泥，上部清水利用输送泵和压缩 空气输送至空气预热器后的烟道内雾化，利用烟气的余热将雾化后的脱硫废水蒸发，最后 用除尘器捕捉蒸发后的杂质，其具有以下优点：
[0008] 1、工艺流程简单，维护量小，能够简单高效低成本处理脱硫废水，同时彻底解决了 高浓度氯离子对环境的影响，实现真正意义上废水的零排放。
[0009] 2、投资只有目前电结晶法的1/60,且能耗小，运行成本比只有电结晶法的1/20。 [0010] 3、可以实现完全自动化，操作安全简单。
[0011] 4、适用于300MW及以上的湿法脱硫废水机组，利用烟气余热完全蒸发重污染脱硫 废水，提高热量的利用效率。
[0012] 下面结合附图进一步说明本实用新型的技术方案。
附图说明
[0013] 图1是本实用新型的结构示意图。
[0014] 图2是本实用新型中废水中和反应池的结构示意图。
具体实施方式
[0015] 参见图1，本实用新型提供的300MW及以上火力发电机组脱硫废水处理装置，包括 废水中和反应池8、澄清池7、设在烟道入口的空气预热器4、设在烟道内的雾化器3、设在烟 道出口的除尘器2以及与除尘器2连通的脱硫塔1，所述废水中和反应池8的进水管与脱硫 塔1的排水管相连，澄清池7的进水管与废水中和反应池8的排水管相连，澄清池7通过水 泵输送装置6和加气装置5与雾化器3相连。
[0016] 见图2,所述废水中和反应池8采用由3个隔槽串联组成的三联箱，三联箱包括箱 体803、设在箱体前面的进水管801和箱体后面的排水管804、设在箱体内形成隔槽的隔板 802。
[0017] 所述雾化器3位置位于空气预热器4后1. 5米位置，水平布置，雾化方向与烟气方 向相同；所述水泵输送装置6的流量控制3. 0〜10吨/小时，所述加气装置5采用压缩空 气机，连续供气压力控制在〇· 5〜0· 8MPa。
[0018] 本实用新型的工作原理如下：
[0019] 烟气从空气预热器4沿烟道进入除尘器2除尘，经脱硫塔1脱硫后排放。脱硫废 水从脱硫塔1经过废水管道进入废水中和反应池8 (三联箱)，依次自流充满三联箱的每个 隔槽，在三联箱内废水经过氧化反应、沉淀反应将脱硫废水中钙镁离子、重金属离子全部进 行沉淀处理，从三联箱流出的水进入的澄清池7将沉积物沉降下来，下部的沉淀物浓缩成 污泥，上部清水通过水泵输送装置6和加气装置5的共同作用下，将澄清后的脱硫废水变成 汽水混合物输入到位于空气预热器4后面1. 5m位置的雾化器6,脱硫废水由雾化器6雾化 后沿着烟气流动方向被烟气的余热蒸干，最终被除尘器2将脱硫废水的杂质随着飞灰沉积 下来，蒸发后的水气重新进入脱硫塔1进入下一个循环，从而达到处理脱硫废水的目的。
Claims (2)
1. 一种30(MW及以上火力发电机组脱硫废水处理装置，其特征是包括废水中和反应 池、澄清池、设在烟道入口的空气预热器、设在烟道内的雾化器、设在烟道出口的除尘器以 及连通的脱硫塔，所述废水中和反应池的进水管与脱硫塔的排水管相连，澄清池的进水管 与废水中和反应池的排水管相连，澄清池通过水泵输送装置和加气装置与雾化器相连。
2. 根据权利要求1所述的300MW及以上火力发电机组脱硫废水处理装置，其特征是所 述废水中和反应池采用由3个隔槽串联组成的三联箱；所述雾化器位置位于空气预热器后 1. 5米位置，水平布置，雾化方向与烟气方向相同。
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| CN104030512A (zh) * | 2014-06-24 | 2014-09-10 | 湖南正川电力科技有限公司 | 一种300mw及以上火力发电机组脱硫废水处理装置 |
| CN105417604A (zh) * | 2016-01-18 | 2016-03-23 | 重庆远达水务有限公司 | 利用烟气余热处理脱硫废水的方法及装置 |
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| CN104030512A (zh) * | 2014-06-24 | 2014-09-10 | 湖南正川电力科技有限公司 | 一种300mw及以上火力发电机组脱硫废水处理装置 |
| CN105417604A (zh) * | 2016-01-18 | 2016-03-23 | 重庆远达水务有限公司 | 利用烟气余热处理脱硫废水的方法及装置 |
| CN105417604B (zh) * | 2016-01-18 | 2018-11-20 | 重庆远达水务有限公司 | 利用烟气余热处理脱硫废水的方法及装置 |
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