CN102041522B - 电解槽密封垫片的制备方法 - Google Patents

电解槽密封垫片的制备方法 Download PDF

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CN102041522B
CN102041522B CN2009101848873A CN200910184887A CN102041522B CN 102041522 B CN102041522 B CN 102041522B CN 2009101848873 A CN2009101848873 A CN 2009101848873A CN 200910184887 A CN200910184887 A CN 200910184887A CN 102041522 B CN102041522 B CN 102041522B
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polyfluortetraethylene plate
electrolytic tank
seal gasket
electrolyzer
ion
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CN102041522A (zh
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刘跃生
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Hongze (Jiangsu) Technology Co.,Ltd.
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JIANGYIN SHENGYI CHLORINE ALKALI EQUIPMENT MANUFACTURING Co Ltd
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Abstract

本发明涉及一种离子膜电解槽密封垫片制备方法。所述方法包括以下工艺步骤:步骤一、先加工聚四氟乙烯板,聚四氟乙烯板的正面的背面均进行表面处理,步骤二、在表面处理后的聚四氟乙烯板一面复合薄薄的三元乙丙橡胶层,另一面贴上带双面胶的聚四氟乙烯弹性条。本发明方法制备的离子膜电解槽密封垫片不会产生腐蚀,更换方便。

Description

电解槽密封垫片的制备方法
(一)技术领域
本发明涉及一种离子膜电解槽,尤其是涉及一种复极式电解槽密封垫片的制备方法,所述密封垫片贴合在离子膜电解槽的单元槽密封面上起密封作用。属氯碱设备技术领域。
(二)背景技术
复极式离子膜电解槽是氯碱工业专用设备,通过电解盐水(Nacl)生产烧碱(NaOH)和氯气(cl2)等。离子膜电解槽密封垫片有阴极垫片和阳极垫片二种。其使用型式为:在单元槽密封面上贴上阴、阳极垫片,阴、阳极垫片间装有离子膜,然后通过油压机或拉杆锁紧,达到密封作用。其使用环境如下:
阴极垫片接触90℃的氢氧化钠溶液。
阳极垫片接触90℃的氯气、盐酸、氯化钠和次氯酸钠等。
阳极垫片存在的问题是:
1、阳极垫片内侧包覆防腐膜,每条垫片有一个接口,接口处的胶水浸在液体中会有电解液渗入;
2、贴垫片时如果局部不齐,将防腐膜的边缘贴在电解槽里,电解液会渗入;
3、在生产过程中造成的少数防腐膜破损;
4、因其它原因造成停车,需要拆开电解槽,如果垫片已经使用一段时间(6个月以上),垫片已经受压,需要更换掉;
5、综上原因,因为一台电解槽由几十到上百个单元槽组成,只要其中有部分(或几条)垫片有问题,即会造成电解槽泄漏而停车;
6、垫片内侧因防腐膜破损局部腐蚀产生结晶瘤,造成对离子膜的损害(局部挤压造成膜破损)。
(三)发明内容
本发明的目的在于克服上述不足,提供一种不会产生腐蚀和更换方便的电解槽密封垫片的制备方法。
本发明的目的是这样实现的:一种电解槽密封垫片的制备方法,所述方法包括以下工艺步骤:
步骤一、先加工聚四氟乙烯板,聚四氟乙烯板的正面的背面均进行表面处理,
步骤二、在表面处理后的聚四氟乙烯板一面复合薄薄的三元乙丙橡胶层,另一面贴上带双面胶的聚四氟乙烯弹性条。
使用时,密封垫片的三元乙丙橡胶层朝向电解槽的密封面,与电解槽的密封面通过胶粘剂贴合,密封垫片的聚四氟乙烯弹性条朝向离子膜。
本发明的目的有益效果是:
1、因密封垫片接触电解液的部分其材质为聚四氟乙烯,不会产生腐蚀,保证了电解槽运行过程中不会因垫片原因造成停车;
2、因其它原因造成停车的,垫片本体不需更换,仅需更换聚四氟乙烯弹性条。
3、经过一期离子膜运行寿命使用的垫片,可以利用密封垫片的聚四氟乙烯板部分重新复合三元乙丙橡胶层,达到修复再用的目的。
(四)附图说明
图1为本发明离子膜电解槽密封垫片的平面图。
图2为图1的A-A剖示图。
图中附图标记:
三元乙丙橡胶层1
聚四氟乙烯板2
聚四氟乙烯弹性条3。
(五)具体实施方式
参见图1~2,图1为本发明离子膜电解槽密封垫片的平面图。图2为图1的A-A剖示图。由图1和图2可以看出,本发明电解槽密封垫片的制备方法,所述方法包括以下工艺步骤:
步骤一、先加工聚四氟乙烯板1,聚四氟乙烯板1的正面的背面均进行表面处理,
步骤二、在表面处理后的聚四氟乙烯板一面复合薄薄的三元乙丙橡胶层2,另一面贴上带双面胶的聚四氟乙烯弹性条3,如图2。

Claims (1)

1.一种电解槽密封垫片的制备方法,其特征在于所述方法包括以下工艺步骤:
步骤一、先加工聚四氟乙烯板,聚四氟乙烯板的正面和背面均进行表面处理,
步骤二、在表面处理后的聚四氟乙烯板一面复合薄薄的三元乙丙橡胶层,另一面贴上带双面胶的聚四氟乙烯弹性条。
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CN102936736A (zh) * 2012-11-19 2013-02-20 扬州中电制氢设备有限公司 包边隔膜垫片
JP7044593B2 (ja) * 2018-03-08 2022-03-30 本田技研工業株式会社 水電解装置
WO2024007244A1 (zh) * 2022-07-07 2024-01-11 舍弗勒技术股份两合公司 用于水电解电堆或燃料电池的密封件、水电解电堆及燃料电池

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Publication number Priority date Publication date Assignee Title
US4721555A (en) * 1985-08-02 1988-01-26 The Dow Chemical Company Electrolysis cell seal means
CN2600451Y (zh) * 2003-02-21 2004-01-21 铁岭科拓橡塑有限责任公司 一种复极式离子膜电解槽橡胶垫片
CN2623701Y (zh) * 2003-03-13 2004-07-07 铁岭科拓橡塑有限责任公司 离子膜电解槽橡胶垫片

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Publication number Priority date Publication date Assignee Title
US4721555A (en) * 1985-08-02 1988-01-26 The Dow Chemical Company Electrolysis cell seal means
CN2600451Y (zh) * 2003-02-21 2004-01-21 铁岭科拓橡塑有限责任公司 一种复极式离子膜电解槽橡胶垫片
CN2623701Y (zh) * 2003-03-13 2004-07-07 铁岭科拓橡塑有限责任公司 离子膜电解槽橡胶垫片

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