CN106179741A - 复合式管束电除雾器 - Google Patents
复合式管束电除雾器 Download PDFInfo
- Publication number
- CN106179741A CN106179741A CN201610555799.XA CN201610555799A CN106179741A CN 106179741 A CN106179741 A CN 106179741A CN 201610555799 A CN201610555799 A CN 201610555799A CN 106179741 A CN106179741 A CN 106179741A
- Authority
- CN
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- Prior art keywords
- water pipe
- cathode line
- demister
- anode tube
- composite type
- Prior art date
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- 239000002131 composite materials Substances 0.000 title claims abstract description 27
- 239000011901 water Substances 0.000 claims abstract description 39
- 239000010410 layers Substances 0.000 claims abstract description 22
- 239000003595 mist Substances 0.000 claims abstract description 19
- 238000010521 absorption reactions Methods 0.000 claims abstract description 18
- 239000000203 mixtures Substances 0.000 claims abstract description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound 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[O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 26
- 239000003546 flue gases Substances 0.000 claims description 24
- 239000000428 dust Substances 0.000 claims description 19
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- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 210000003660 Reticulum Anatomy 0.000 claims description 3
- 229910001245 Sb alloys Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910001069 Ti alloys Inorganic materials 0.000 claims description 3
- 239000002140 antimony alloys Substances 0.000 claims description 3
- 239000004917 carbon fibers Substances 0.000 claims description 3
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- 239000007787 solids Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound 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[S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002699 waste materials Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/41—Ionising-electrodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/49—Collecting-electrodes tubular
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/74—Cleaning the electrodes
- B03C3/78—Cleaning the electrodes by washing
Abstract
Description
技术领域
[0001] 本发明涉及大气污染控制设备领域,尤其涉及一种复合式管束电除雾器。
背景技术
[0002] 目前,锅炉烟气处理多为:脱销+初步除尘+脱硫+深度净化工艺,成熟的脱硫工艺 为湿法脱硫,脱硫后的烟气中包含大量的液滴以及少量脱硫剂,需要进一步作除雾处理。现 在的除雾设备多为传统的机械式除雾器,包括平板式除雾器、丝网式除雾器、管式除雾器、 管束式除雾器,这些机械式除雾器只能去除较大粒径的雾滴,不能有效去除粉尘颗粒,蓝 烟、黄烟、石膏雨现象严重,达不到新的锅炉大气污染物排放标准的要求。
发明内容
[0003] 为了克服现有技术的问题,本发明提供一种复合式管束电除雾器,它结构合理,运 行时打开电源,系统自动开始对烟气进行脱硫除尘,内部系统有自动化控制系统,周期性的 进行冲洗,无需人工操作。烟气从设备底端进入依次进入旋流系统、静电吸附系统、带电板 式电除雾系统,经过三层净化后此设备出口处净烟气含尘量能达到3mg/m 3。
[0004] 本发明的技术方案是:提供一种复合式管束电除雾器,它是由旋流系统、静电吸附 系统、反冲洗系统、带电板式除雾层和壳体组成,旋流系统、静电吸附系统、反冲洗系统、带 电板式除雾层在壳体内由下至上依次排列,旋流系统由外套桶、管束和旋流子组成,管束内 安装旋流子,管束外侧设有外套桶,静电吸附系统由阴极线、阳极管、阴极线固定件、大小梁 组成,大小梁上吊装阴极线,阴极线下端由阴极线固定件固定,支撑阳极管安装在阴极线固 定件与大小梁之间,反冲洗系统由水管支撑梁、反冲洗水管、喷嘴组成,水管支撑梁上安装 反冲洗水管,反冲洗水管安装喷嘴,带电板式除雾层包括除雾器和支撑梁,除雾器平铺于支 撑梁上。
[0005] 优选的,烟气处理方法,烟气自下而上进入复合式管束电除雾区域,烟气首先进入 管束内,经两层旋流子的旋流作用初步出去烟气中的大颗粒物,初步净化后的烟气继续向 上进入静电吸附系统,电场中阴极线释放电子使烟气中的粉尘粒子带负电荷,阳极管带正 电,在电场力的作用下粉尘粒子向阳极管移动,最终被吸附在阳极管内壁,净烟气自上而下 进入除雾器,除雾器是由新型导电复合材料制作的模块带正电荷,净烟气中被电离的粉尘 粒子进入除雾器再次被吸附截留,使最终出口的净烟气含尘量<3mg/m 3,被吸附在阳极管 和除雾器上的粉尘粒子,可通过反冲洗水管和喷嘴清水冲洗,采用间歇式冲洗,冲洗时间和 周期可根据工况条件和吸收塔水平衡调控。
[0006] 优选的,阴极线可采用双向钢、钛合金、铅锑合金材质制作,根据不同的工况环境 选择材质。
[0007] 优选的,阳极管管束组由内切圆036O/035O/033Q/正六边形阳极管采用先进的 层压粘接工艺复合成型,阳极管管束组加工为蜂窝型,内表面含有碳纤维及阻燃剂的耐磨 阻燃导电层。
[0008] 优选的,反冲洗水管为FRPP材质,通过电磁阀控制,间歇性冲洗,反冲洗水管管径 按1.25~2.8/s的液体流速设计,为2m/s左右,以降低从一个冲洗联箱端口到另一个端口的 阻力损失。
[0009] 优选的,外套桶与阳极管材质相同,外套桶与阳极管均为圆形,外套桶外径大小为 阳极管内切圆直径,外套桶与阳极管下端无缝链接。
[0010] 优选的,除雾器为新型导点复合型材料,带正电荷。
[0011] 本发明的有益效果是:阴极线和阳极管之间形成电场,烟气粉尘、雾滴在电场作用 下发生电离而携带负电荷,负电离子在电场作用下逐向阳极管靠近被阳极管捕捉。在通电 状态下,上部板试电除雾层中的除雾器带电,在其发挥机械式除雾器固有除雾功能的基础 上增加对雾滴、微粒的吸附功能,除雾效果明显增强。
附图说明
[0012] 下面根据图进一步对本发明加以说明:
[0013] 图1是本发明的结构图;
[0014] 图2是本发明管束与阳极管连接的结构图;
[0015] 图3是本发明水管支撑梁的结构图;
[0016] 图4是本发明反冲洗水管的布置结构图;
[0017] 图5是本发明除雾器的布置结构图;
[0018] 图6是本发明图1的A-A结构图;
[0019] 图1、图2、图3、图4、图5、图6中所示:1、阴极线,2、阳极管,3、反冲洗水管,4、除雾 器,5、喷嘴,6、水管支撑梁,7、壳体,8、阴极线固定件,9、大小梁,10、管束,11、旋流子,12、外 套桶,13、支撑梁。
具体实施方式
[0020] 下面结合图对本发明作进一步详细的说明,需要说明的是,图仅用于解释本发明, 是对本发明实施例的示意性说明,而不能理解为对本发明的限定。
[0021] 如图1、图2、图3、图4、图5、图6所示,复合式管束电除雾器,它是由旋流系统、静电 吸附系统、反冲洗系统、带电板式除雾层和壳体7组成,旋流系统、静电吸附系统、反冲洗系 统、带电板式除雾层在壳体7内由下至上依次排列,旋流系统由外套桶12、管束10和旋流子 11组成,管束10内安装旋流子11,管束10外侧设有外套桶12,静电吸附系统由阴极线1、阳极 管2、阴极线固定件8、大小梁9组成,大小梁9上吊装阴极线1,阴极线1下端由阴极线固定件8 固定,支撑阳极管2安装在阴极线固定件8与大小梁9之间,反冲洗系统由水管支撑梁6、反冲 洗水管3、喷嘴5组成,水管支撑梁6上安装反冲洗水管3,反冲洗水管3安装喷嘴5,带电板式 除雾层包括除雾器4和支撑梁13,除雾器4平铺于支撑梁13上。
[0022]优选的,烟气处理方法,烟气自下而上进入复合式管束电除雾区域,烟气首先进入 管束10内,经两层旋流子11的旋流作用初步出去烟气中的大颗粒物,初步净化后的烟气继 续向上进入静电吸附系统,电场中阴极线1释放电子使烟气中的粉尘粒子带负电荷,阳极管 2带正电,在电场力的作用下粉尘粒子向阳极管2移动,最终被吸附在阳极管2内壁,净烟气 自上而下进入除雾器4,除雾器4是由新型导电复合材料制作的模块带正电荷,净烟气中被 电离的粉尘粒子进入除雾器4再次被吸附截留,使最终出口的净烟气含尘量<3mg/m3,被吸 附在阳极管2和除雾器4上的粉尘粒子,可通过反冲洗水管3和喷嘴5清水冲洗,采用间歇式 冲洗,冲洗时间和周期可根据工况条件和吸收塔水平衡调控。
[0023]优选的,阴极线1可采用双向钢、钛合金、铅锑合金材质制作,根据不同的工况环境 选择材质。
[0024] 优选的,阳极管2管束组由内切圆0360/0350/0330/正六边形阳极管2采用先进 的层压粘接工艺复合成型,阳极管2管束组加工为蜂窝型,内表面含有碳纤维及阻燃剂的耐 磨阻燃导电层。
[0025]优选的,反冲洗水管3为FRPP材质,通过电磁阀控制,间歇性冲洗,反冲洗水管3管 径按1.25~2.8/s的液体流速设计,为2m/s左右,以降低从一个冲洗联箱端口到另一个端口 的阻力损失。
[0026]优选的,外套桶12与阳极管2材质相同,外套桶12与阳极管2均为圆形,外套桶12外 径大小为阳极管2内切圆直径,外套桶12与阳极管2下端无缝链接。
[0027]优选的,除雾器4为新型导点复合型材料,带正电荷。
[0028]通电后,阴极线1和阳极管2之间形成电场,烟气粉尘、雾滴在电场作用下发生电离 而携带负电荷,负电离子在电场作用下逐向阳极管2靠近被阳极管2捕捉。在通电状态下,上 部板试电除雾层中的除雾器4带电,在其发挥机械式除雾器4固有除雾功能的基础上增加对 雾滴、微粒的吸附功能,除雾效果明显增强。
[0029]以100t/h锅炉除尘脱硫项目为例,从以下几方面将布袋除尘器与该设备进行比 较:
[0030] (1)粉尘排放量:锅炉烟气排放量为260000m3/h,粉尘含量按200mg/m3计算,则每小 时粉尘排放量为52Kg,而安装复合式管束电除雾后,预计在进入吸收塔之前烟气的粉尘含 量仅为3mg/m3,每小时排入空气中的粉尘不到0.6Kg。
[0031] (2)节能指标:安装布袋除尘器的项目,风机功率一般在450KW左右,按满负荷运转 计算,平均日耗电在450度左右,安装复合式管束电除雾的项目,风机功率一般在300KW左 右,平均日耗电300度左右,年节约用电约5.84万度。
[0032] (3)安装及运行维护方面:相对于传统除尘器,复合式管束电除雾模块体积小,拆 装方便,维护方便。布袋除尘器滤袋维护或更换时,滤仓必须停机,且普通滤袋的价格每条 在300-400元之间,平均使用两年后就要更换,设备运行维护费用大大增高。在项目工况稳 定时,复合式管束电除雾器部件正常使用寿命在5-10年,且部件造价相对较低,设备运行维 护费用低。
[0033] 综合分析,在项目投资方面,复合式管束电除雾无论是设备本身还是配套设施,以 及项目后期的运行维护,其经济指标均优于传统除尘器;复合式管束电除雾器对项目环境 及风机选型无特殊严格要求;在节能环保方面,产生废弃部件少,节约电能,经过复合式管 束电除雾器处理的烟气排放达到并远远高于国家标准。
[0034] 本发明结构合理,复合式管束电除雾设备进烟口接烟气出口,运行时打开电源,系 统自动开始对烟气进行脱硫除尘,内部系统有自动化控制系统,周期性的进行冲洗,无需人 工操作。烟气从设备底端进入依次进入旋流系统、静电吸附系统、带电板式电除雾系统,经 过三层净化后此设备出口处净烟气含尘量能达到3mg/m 3。
[0035]以上所述为本发明的实施例,并不用于限制本发明,对于本领域的技术人员来说, 本发明可以有各种改进和变化。凡在本发明的精神和原则之内所作的任何修改、等同替换、 改进等均应含在本发明的权利要求范围之内。
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