CN104312310A - 一种换热器环保节能防腐蚀的方法 - Google Patents
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Abstract
一种换热器环保节能防腐蚀的方法，将市售的氟碳树脂涂料与纳米氧化铈，聚丙烯酸含氟酯流平剂，经过充分的混合得到新型改性氟碳涂料。因为该涂料降低了树脂粘度，流延性好，易成膜，附着力强，所以可以通过高压无气喷涂技术，可对换热管及工艺管道内壁进行喷涂。
Description
技术领域
本发明涉及一种设备防腐蚀的方法，尤其是一种换热器环保节能防腐蚀的方法。
背景技术
随着石油化工行业的迅速发展，对设备耐高温性能的要求越来越高。对于换热器而言，其设备总投资占整个石油化工行业设备总投资额的。每年因换热器腐蚀失效造成的设备损坏、材料损耗等直接经济损失以亿为计，而由此引起的泄露、污染、停产等间接经济损失则更为巨大，换热器的腐蚀已成为一个迫切需要解决的问题。同其它抗高温氧化腐蚀手段相比，耐高温防腐蚀涂料以其大面积施工工艺性能良好、成本低、效果显著等优点得到关注。
目前市场上耐高温防腐蚀涂料主要是有机耐高温防腐蚀涂料和无机耐高温防腐蚀涂料两大类。无机型耐高温防腐蚀涂料耐热性好，可达1000℃甚至更高，具有耐燃性好、硬度高的特点，但柔韧性差，漆膜较脆，对底材的附着力差。主要有陶瓷、磷酸盐涂料、硅酸盐涂料和富锌底漆等。有机物基料有着无机物基料不可比拟性和粘结性，而且种类繁多，便于研制更优良的耐高温涂料。有机耐高温涂料可分为杂环聚合耐高温涂料和元素有机耐高温涂料，前者主要有聚苯硫醚，聚醚酚，聚酞亚胺等后者主要包括有机硅耐高温涂料、有机氟耐高温涂料。
CN102964963公开了一种换热器用防腐蚀导热涂料及其制备方法。按重量百分比计，其原料配方为30％-40％的主体树脂、40％-50％的填料、0.5％-1％的助剂和15％-25％的稀释剂；主体树脂为树脂A和树脂B的混合物，树脂A为SH-023-7型号有机硅改性环氧树脂产品；所述的树脂B为2130型号酚醛树脂产品；填料为氮化铝、玻璃粉、硫酸钡和钛白粉的混合物。
CN102408817公开了金属防腐技术领域一种热喷涂用免喷砂防腐复合涂层包括带锈底漆和免喷砂粗化层，带锈底漆由带锈底漆甲组分改性环氧树脂、中油度半干性醇酸树脂、醚化度为4的高亚氨基化丁醚化三聚氰胺树脂、溶剂与带锈底漆乙组分混合涂布得到，免喷砂粗化层由免喷砂粗化层甲组分磷铁粉、三聚磷酸铝、云母粉、环氧树脂、丙二醇甲醚醋酸酯、二甲苯和免喷砂粗化层乙组分和填料组成。所述的热喷涂用免喷砂防腐复合涂层的制备工艺，带锈底漆涂布在锈蚀的钢铁表面，常温24h后，免喷砂粗化层喷涂在带锈底漆上。
现有技术和研究领域使用的复合涂料，制备的涂层附着力、不粘性、耐热性能达到要求，但是对公称直径Dg10mm以上的各种长度、形状的换热管及工艺管道内壁进行喷涂比较困难，在本专利采用了化学清洗+高压无气喷涂氟碳涂料新工艺，可对公称直径Dg10mm以上的各种长度、形状的换热管及工艺管道内壁进行喷涂，成功地解决了传统喷砂工艺不能进行小口经管道内壁除锈喷涂的历史难题，是设备内防腐技术的重大突破。
发明内容
针对现有技术的不足，本发明提供了一种换热器环保节能防腐蚀的方法。
将市售的氟碳树脂涂料与纳米氧化铈，聚丙烯酸含氟酯流平剂，经过充分的混合得到新型改性氟碳涂料。因为该涂料降低了树脂粘度，流延性好，易成膜，附着力强，所以可以通过高压无气喷涂技术，可对换热管及工艺管道内壁进行喷涂。
本发明提供一种换热器环保节能防腐蚀的方法，通过以下步骤实现：
步骤1.纳米氧化铈表面聚合：
将一定量的纳米氧化铈分散到乙醇中，按下述比例加入丙烯酸丁酯单体，过氧化苯甲酰和明胶、十二烷基苯磺酸钠等，升温，在60-80℃反应6-15小时，即得到经表面聚合的纳米氧化铈微悬浮液，离心烘干，待用。
步骤2.混合复配：
将氟碳树脂涂料，纳米氧化铈，聚丙烯酸含氟酯流平剂以质量比为100∶(0.01-0.05)∶(0.01-0.05)的配比在反应釜中混合10-40hr，得到改性氟碳涂料产品。
步骤3.高压无气喷涂
使用高压柱塞泵，直接将改性氟碳涂料产品加压，形成高压力的改性氟碳涂料产品，喷出枪口形成雾化气流作用于换热管及工艺管道内壁，该内壁不需再经过喷砂除锈预处理，即可起到防腐效果。
所述的纳米氧化铈为市售产品，如四川攀西稀土责任有限公司研制的产品。
所述的原料氟碳树脂涂料为市售产品，如郑州双华防腐材料有限公司生产的产品，如衢州市万能达清洗有限公司研制的产品。
所述的聚丙烯酸含氟酯流平剂为市售产品，如方舟化学材料有限公司生产的产品。
本发明的有益效果：
换热器管内喷涂新技术，创造性地采用了化学清洗+高压无气喷涂氟碳涂料新工艺，对各种长度、形状的换热管及工艺管道内壁进行喷涂，成功地解决了传统喷砂工艺不能进行小口经管道内壁除锈喷涂的历史难题，是设备内防腐技术的重大突破。该技术有以下优点：
(1)涂层与管内壁附着力强，管壁添膜完整致密。
(2)耐腐蚀性能优良，使用寿命长
(3)喷涂后的换热器具有自洁性好、不易结垢、阻力小、耐溶剂
具体实施方式
以下实施例仅仅是进一步说明本发明，并不是限制本发明保护的范围。
实施例1
步骤1.纳米氧化铈表面聚合：
在500L反应釜中，按下列配比加入纳米氧化铈分散到乙醇中，按下述比例加入丙烯酸丁酯单体，过氧化苯甲酰和明胶、十二烷基苯磺酸钠等，升温，在80℃反应6小时，即得到经表面聚合的纳米氧化铈微悬浮液，离心烘干，待用。
步骤2.混合复配：
在500L反应釜中，按次序分别加入氟碳树脂涂料，纳米氧化铈，聚丙烯酸含氟酯流平剂，质量分别为：100Kg、0.03Kg、0.03Kg的配比在反应釜中混合20hr，得到改性氟碳涂料产品。编号为SX-1。
步骤3.高压无气喷涂
使用高压柱塞泵，直接将改性氟碳涂料产品加压，形成高压力的改性氟碳涂料产品，喷出枪口形成雾化气流作用于公称直径Dg10mm的换热管管道内壁，该内壁不需再经过喷砂除锈预处理，即可起到防腐效果。
实施例2
步骤1.纳米氧化铈表面聚合：
在500L反应釜中，按下列配比加入纳米氧化铈分散到乙醇中，按下述比例加入丙烯酸丁酯单体，过氧化苯甲酰和明胶、十二烷基苯磺酸钠等，升温，在80℃反应6小时，即得到经表面聚合的纳米氧化铈微悬浮液，离心烘干，待用。
步骤2.混合复配：
在500L反应釜中，按次序分别加入按次序分别加入氟碳树脂涂料，纳米氧化铈，聚丙烯酸含氟酯流平剂，按次序质量分别为：100Kg、0.01Kg、0.01Kg的配比在反应釜中混合10hr，得到改性氟碳涂料产品。编号为SX-2。
步骤3.高压无气喷涂
使用高压柱塞泵，直接将改性氟碳涂料产品加压，形成高压力的改性氟碳涂料产品，喷出枪口形成雾化气流作用于公称直径Dg500mm的工艺管道内壁，该内壁不需再经过喷砂除锈预处理，即可起到防腐效果。
实施例3
步骤1.纳米氧化铈表面聚合：
在500L反应釜中，按下列配比加入纳米氧化铈分散到乙醇中，按下述比例加入丙烯酸丁酯单体，过氧化苯甲酰和明胶、十二烷基苯磺酸钠等，升温，在80℃反应6小时，即得到经表面聚合的纳米氧化铈微悬浮液，离心烘干，待用。
步骤2.混合复配：
在500L反应釜中，按次序分别加入按次序分别加入氟碳树脂涂料，纳米氧化铈，聚丙烯酸含氟酯流平剂，按次序质量分别为：100Kg、0.05Kg、0.05Kg的配比在反应釜中混合40hr，得到改性氟碳涂料产品。编号为SX-3。
步骤3.高压无气喷涂
使用高压柱塞泵，直接将改性氟碳涂料产品加压，形成高压力的改性氟碳涂料产品，喷出枪口形成雾化气流作用于公称直径Dg40mm的换热管管道内壁，该内壁不需再经过喷砂除锈预处理，即可起到防腐效果。
比较例1
聚丙烯酸含氟酯流平剂不加入，其它同实施例1。所得产品编号为SX-4。
比较例2
纳米氧化铈不加入，其它同实施例1。所得产品编号为SX-5。
实施例4
采用实施例1-3以及比较例1-2的改性氟碳涂料，对直径1000mm废旧列管式换热器进行高压无气喷涂，公称直径Dg15mm的换热管内表面免喷砂处理，按GB/T1711-91进行耐烟雾试验，检测耐酸雾时间。
| 产品编号 | 耐酸雾时间(h) |
| SX-1 | 3600 |
| SX-2 | 3230 |
| SX-3 | 3900 |
| SX-4 | 1870 |
| SX-5 | 2890 |
Claims (4)
1.一种换热器环保节能防腐蚀的方法，其特征在于包括以下步骤：
步骤1.纳米氧化铈表面聚合：
将一定量的纳米氧化铈分散到乙醇中，按下述比例加入丙烯酸丁酯单体，过氧化苯甲酰和明胶、十二烷基苯磺酸钠等，升温，在60-80℃反应6-15小时，即得到经表面聚合的纳米氧化铈微悬浮液，离心烘干，待用。
步骤2.混合复配：
将氟碳树脂涂料，纳米氧化铈，聚丙烯酸含氟酯流平剂以质量比为100∶(0.01-0.05)∶(0.01-0.05)的配比在反应釜中混合10-40hr，得到改性氟碳涂料产品。
步骤3.高压无气喷涂
使用高压柱塞泵，直接将改性氟碳涂料产品加压，形成高压力的改性氟碳涂料产品，喷出枪口形成雾化气流作用于换热管及工艺管道内壁，该内壁不需再经过喷砂除锈预处理，即可起到防腐效果。
2.根据权利要求1所述的一种换热器环保节能防腐蚀的方法，其特征在于，纳米氧化铈需经过表面聚合改性。
3.根据权利要求1所述的一种换热器环保节能防腐蚀的方法，其特征在于，使用高压柱塞泵，直接将改性氟碳涂料产品加压，形成高压力的改性氟碳涂料产品。
4.权利要求1-2中所述得到的一种换热器环保节能防腐蚀的方法。
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| CN110819176A (zh) * | 2019-11-18 | 2020-02-21 | 榆林学院 | 一种防腐防垢涂层的制备方法 |
| WO2022148284A1 (zh) * | 2021-01-08 | 2022-07-14 | 杭州三花研究院有限公司 | 换热器及其制备方法、热管理系统 |
| CN115851048A (zh) * | 2022-11-23 | 2023-03-28 | 广东腐蚀科学与技术创新研究院 | 纳米氧化铈复合航空涂层及制备方法 |
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| CN101265374A (zh) * | 2008-01-24 | 2008-09-17 | 复旦大学 | 一种智能隔热保温膜及其制备方法 |
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| CN110819176A (zh) * | 2019-11-18 | 2020-02-21 | 榆林学院 | 一种防腐防垢涂层的制备方法 |
| WO2022148284A1 (zh) * | 2021-01-08 | 2022-07-14 | 杭州三花研究院有限公司 | 换热器及其制备方法、热管理系统 |
| US11807539B2 (en) | 2021-01-08 | 2023-11-07 | Hangzhou Sanhua Research Institute Co., Ltd. | Heat exchanger and manufacturing method thereof |
| CN115851048A (zh) * | 2022-11-23 | 2023-03-28 | 广东腐蚀科学与技术创新研究院 | 纳米氧化铈复合航空涂层及制备方法 |
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