CN203899752U - 湿式电除尘器 - Google Patents
湿式电除尘器 Download PDFInfo
- Publication number
- CN203899752U CN203899752U CN201420343124.5U CN201420343124U CN203899752U CN 203899752 U CN203899752 U CN 203899752U CN 201420343124 U CN201420343124 U CN 201420343124U CN 203899752 U CN203899752 U CN 203899752U
- Authority
- CN
- China
- Prior art keywords
- superfine
- type electric
- wet type
- water mist
- water
- Prior art date
Links
- 239000000428 dust Substances 0.000 title claims abstract description 41
- 239000007921 sprays Substances 0.000 claims abstract description 25
- 239000003595 mist Substances 0.000 claims abstract description 22
- 238000005507 spraying Methods 0.000 claims abstract description 15
- 239000011901 water Substances 0.000 abstract description 34
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound 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[Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052753 mercury Inorganic materials 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 229910001385 heavy metals Inorganic materials 0.000 abstract description 5
- 239000000443 aerosols Substances 0.000 abstract description 4
- 238000000034 methods Methods 0.000 abstract description 3
- 239000010419 fine particles Substances 0.000 abstract 1
- 239000002245 particles Substances 0.000 description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound 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Abstract
本实用新型涉及湿法脱硫后湿式电除尘设备领域，尤其涉及一种具有超细水雾装置的湿式电除尘器。本实用新型的实施例公开了一种湿式电除尘器，包括设于除尘入口和除尘出口之间的阴极系统和阳极系统，以及超细水雾装置，超细水雾装置包括储水箱、过滤器、高压水泵和超细水雾喷头，过滤器安装于储水箱中，过滤器通过管路与高压水泵连接，高压水泵通过管路与超细水雾喷头连接，超细水雾喷头设于阴极系统和阳极系统的上方。本实用新型的有益效果在于，相对于现有喷淋设备，通过超细水雾装置产生的超细水雾对穿越湿式电除尘器的烟气中的细微颗粒物(如PM2.5)、汞、重金属、SO3等气溶胶的捕捉能力更强，除尘效率高，并且具有更低的耗水量。
Description
技术领域
[0001] 本实用新型涉及湿法脱硫后湿式电除尘设备领域，尤其涉及一种具有超细水雾装 置的湿式电除尘器。 湿式电除尘器
背景技术
[0002] 现有火电厂的湿法脱硫系统几乎不具备去除PM2. 5颗粒物的能力，对汞和S03气 溶胶的脱除也十分有限，导致烟囱排烟时出现长烟尾的"蓝烟"现象，烟囱风向的下游经常 出现酸雨、石膏雨，这些污染物对环境造成的危害越来越严重。为了解决这些问题，在湿法 烟气脱硫装置的下游安装湿式电除尘器（简称WESP)，可作为高效除尘的终端精处理设备， 在燃煤电厂的应用中表明，湿式电除尘器能去除90 %以上的PM2. 5细微粉尘、S03烟雾，并 能达到几乎零浊度的排放，此外还能去除汞、NH3、S0 2和HC1。
[0003] 但是，由于湿式电除尘器存在耗水量大、PM2. 5粉尘和S03等气溶胶接触水膜表面 积小导致捕捉能力弱、内部件腐蚀严重等问题，仍需要进一步改进。 实用新型内容
[0004] 本实用新型主要解决的技术问题是提供一种具有超细水雾装置的湿式电除尘器， 对污染物的捕捉能力相对现有设备更强，且耗水量小。
[0005] 为解决上述技术问题，本实用新型采用的一个技术方案是：提供一种湿式电除尘 器，包括设于除尘入口和除尘出口之间的阴极系统和阳极系统，还包括超细水雾装置，所述 超细水雾装置包括储水箱、过滤器、高压水泵和超细水雾喷头，所述过滤器安装于所述储水 箱中，过滤器通过管路与所述高压水泵连接，高压水泵通过管路与所述超细水雾喷头连接， 超细水雾喷头设于所述阴极系统和阳极系统的上方。
[0006] 其中，还包括灰处理器，所述灰水处理器与所述储水箱连接，灰水处理器用于收集 被污染的灰水并进行净化后输送至储水箱。
[0007] 其中，所述高压水泵的输出压力不小于2MPa。
[0008] 其中，所述高压水泵和超细水雾喷头之间的管路上设有溢流阀和压力表。
[0009] 本实用新型的有益效果是：相对于现有喷淋设备，本方案通过超细水雾装置产生 的超细水雾对穿越湿式电除尘器的烟气中的细微颗粒物（如PM2. 5)、汞、重金属、S03等气 溶胶的捕捉能力更强，除尘效率高，并且具有更低的耗水量。
附图说明
[0010] 图1是本实用新型实施例的湿式电除尘器的整体结构示意图。
[0011] 图2是本实用新型实施例的湿式电除尘器的超细水雾装置的结构示意图。
[0012] 主要元件符号说明：
[0013] 11、除尘入口；12、阴极系统和阳极系统；13、除尘出口；
[0014] 20、超细水雾装置；21、储水箱；22、过滤器；23、高压水泵；24、超细水雾喷头；25、 溢流阀；26、压力表；
[0015] 30、灰水处理器。
具体实施方式
[0016] 为详细说明本实用新型的技术内容、构造特征、所实现目的及效果，以下结合实施 方式并配合附图详予说明。
[0017] 本实用新型最关键的构思在于：通过喷射出的超细水雾能够提高本设备对污染物 的捕捉能力，且喷淋设备用水量少，并且节省空间，采用更小的连接管道，节省成本。
[0018] 请参阅图1，本实施方式为一种湿式电除尘器，包括设于除尘入口 11和除尘出口 13之间的阴极系统和阳极系统12,以及超细水雾装置20。
[0019] 请结合图2,所述超细水雾装置20包括储水箱21、过滤器22、高压水泵23和超细 水雾喷头24,所述过滤器22安装于所述储水箱21中，过滤器22通过管路与所述高压水泵 23连接，高压水泵23通过管路与所述超细水雾喷头24连接，超细水雾喷头24设于所述阴 极系统和阳极系统12的上方。
[0020] 从上述描述可知，相对于现有喷淋设备，本方案通过超细水雾装置产生的超细水 雾对穿越湿式电除尘器的烟气中的细微颗粒物（如PM2. 5)、汞、重金属、S03等气溶胶的捕 捉能力更强，除尘效率高，并且具有更低的耗水量。
[0021] 进一步地，作为对上述实施方式的改进，还包括灰水处理器30,如图1所示，灰水 处理器30与储水箱21连接，灰水处理器30用于收集被污染的灰水并进行净化后输送至储 水箱21。从图1可见，两侧的储水箱21都可通过补给水进行水量补给，并且左侧的储水箱 21还可利来自灰水处理器30的经过净化的水进行补给，左侧的储水箱21的水用于喷洒在 除尘入口 11附近的区域，右侧储水箱21的水用于喷洒在除尘出口 13附近的区域，因此两 处用水的质量略有差别。
[0022] 进一步地，上述实施方式中的高压水泵23的输出压力不小于2MPa。将水由高压泵 加压至不低于2MPa的压力后，通过超细水雾喷头形成膜状水流，与空气发生摩擦，撕裂成 直接在10微米到400微米的超细水雾颗粒，可显著提高除尘效率，降低排放水平，并有效节 省用水。
[0023] 其除尘原理在于，直径为10微米到400微米的超细水雾颗粒，水雾颗粒数量多，水 膜表面积大，对更充分地对穿越湿式电除尘器的烟气中的细微颗粒物（如PM2. 5)、汞、重金 属、S03等气溶胶进行润湿与侵润，并对这些污染物起凝结凝聚作用，水雾和细微颗粒物、溶 胶经过吸收、凝聚、增重，与金属电极的离子结合，产生表面荷电粒子，荷电粒子在电场力的 作用下向收尘极运动，并沉积在收尘极上，超细水雾同时在集尘板上形成一层均匀稳定的 水膜，将板上捕获的粉尘冲刷到灰斗中随水排出，保证阴极线和阳极板始终保持干净状态。 由于PM2. 5颗粒、S03等气溶胶通过与超细水雾在静电凝聚作用下粒径增大，荷电增加，这样 就增大粉尘有效驱进速度，使电除尘器易于捕捉这些颗粒，从而大幅度提高除尘效果。由于 水的电阻相对较小，水滴与粉尘结合后，高比电阻的粉尘比电阻下降，也有利于提高除尘效 率。另外，超细水雾雾滴直径很小，表面积大，可以扩大吸热的总表面积，迅速吸收热量，降 低烟气温度，随着烟气温度的降低，烟气颗粒的比电阻也随之下降，温度降低也提高了电场 击穿电压，可采用更高场强进行除尘。
[0024] 进一步地，请结合图2,作为对上述实施方式的改进，所述高压水泵23和超细水雾 喷头24之间的管路上设有溢流阀25和压力表26,这样可以防止系统过载，同时也可以方便 调定高压水泵23的出口工作压力。
[0025] 综上所述，本实用新型提供的湿式电除尘器通过超细水雾装置产生的超细水雾直 径在10微米到400微米，相对于现有喷淋设备，对穿越湿式电除尘器的烟气中的细微颗粒 物（如PM2. 5)、汞、重金属、S03等气溶胶的捕捉能力更强，除尘效率高，具有较低的耗水量。
[0026] 以上所述仅为本实用新型的实施例，并非因此限制本实用新型的专利范围，凡是 利用本实用新型说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在 其他相关技术领域，均同理包括在本实用新型专利保护范围内。
Claims (4)
1. 一种湿式电除尘器，包括设于除尘入口和除尘出口之间的阴极系统和阳极系统，其 特征在于，还包括超细水雾装置，所述超细水雾装置包括储水箱、过滤器、高压水泵和超细 水雾喷头，所述过滤器安装于所述储水箱中，过滤器通过管路与所述高压水泵连接，高压水 泵通过管路与所述超细水雾喷头连接，超细水雾喷头设于所述阴极系统和阳极系统的上 方。
2. 根据权利要求1所述的湿式电除尘器，其特征在于，还包括灰处理器，所述灰水处理 器与所述储水箱连接，灰水处理器用于收集被污染的灰水并进行净化后输送至储水箱。
3. 根据权利要求1所述的湿式电除尘器，其特征在于，所述高压水泵的输出压力不小 于 2MPa。
4. 根据权利要求1所述的湿式电除尘器，其特征在于，所述高压水泵和超细水雾喷头 之间的管路上设有溢流阀和压力表。
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| CN105749660A (zh) * | 2016-01-31 | 2016-07-13 | 熊小宁 | 一种雾霾自动控制清洗系统 |
| CN105749665A (zh) * | 2016-01-29 | 2016-07-13 | 熊小宁 | 一种自动感应风向户外雾霾清洗器 |
| CN105833993A (zh) * | 2015-01-13 | 2016-08-10 | 袁野 | 电弧式除雾器 |
| CN105983487A (zh) * | 2015-02-09 | 2016-10-05 | 袁野 | 电弧式油烟净化器 |
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| CN105833993A (zh) * | 2015-01-13 | 2016-08-10 | 袁野 | 电弧式除雾器 |
| CN105983487A (zh) * | 2015-02-09 | 2016-10-05 | 袁野 | 电弧式油烟净化器 |
| CN105749665A (zh) * | 2016-01-29 | 2016-07-13 | 熊小宁 | 一种自动感应风向户外雾霾清洗器 |
| CN105749660A (zh) * | 2016-01-31 | 2016-07-13 | 熊小宁 | 一种雾霾自动控制清洗系统 |
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