CN203663822U - 一种钛材与不锈钢组合结构的丙烯酸酯酯化反应器 - Google Patents
一种钛材与不锈钢组合结构的丙烯酸酯酯化反应器 Download PDFInfo
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- CN203663822U CN203663822U CN201320777539.9U CN201320777539U CN203663822U CN 203663822 U CN203663822 U CN 203663822U CN 201320777539 U CN201320777539 U CN 201320777539U CN 203663822 U CN203663822 U CN 203663822U
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- 239000010935 stainless steel Substances 0.000 title claims abstract description 57
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 57
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate Chemical compound 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Abstract
本实用新型涉及一种机械设备，一种钛材与不锈钢组合结构的丙烯酸酯酯化反应器，其特征在于，反应器的主体，有壳体、反应物入、出口管及其法兰，反应器的主体材质为不锈钢材质，反应器内接触腐蚀性介质的盘管内输送加热蒸汽，反应器内的加热盘管材质为钛材；钛盘管上的不锈钢法兰衬钛材密封面与不锈钢法兰采用钎焊连接，钛盘管上的钛制封板与不锈钢壳体采用钎焊连接。本实用新型的优点在于，制成的丙烯酸酯酯化反应器，将输送蒸汽的盘管采用钛材，将反应器的主体采用不锈钢材料，可大大降低设备成本。不会导致这类设备容易损坏，在役有效期的使用时间加长，大大地提高化工产品的产量和经济效益，避免资源的浪费。
Description
一种钛材与不锈钢组合结构的丙烯酸酯酯化反应器
技术领域
[0001] 本实用新型涉及一种机械设备，更具体地说，涉及一种石油化工设备。
[0002] 背景技术
[0003] 在石油化工装置的设备中，如丙烯酸及其酯的产品生产装置，设备的壳体和内盘管材料，传统上一般都采用不锈钢材料，由于介质的腐蚀，使用过程中盘管振动、磨损等原因，导致这类设备容易损坏，在役有效期的使用时间往往很短，大大的影响化工产品的产量和经济效益，造成资源的浪费。
[0004] 钛材有很好的耐腐蚀性能，与不锈钢相比，更适用于丙烯酸及其酯等具有强腐蚀介质的产品生产环境；然而，钛材价格昂贵，如果将设备整体都采用钛材，将导致制造成本居高不下。如果将内、外均受介质腐蚀的盘管部件采用钛材，壳体、支撑件等采用不锈钢材料，既降低设备整体造价，又提高设备的有效使用时间。
[0005] 钛材与钛材焊接，不锈钢材料与不锈钢材料焊接是容易的。而钛材与不锈钢材料焊接性能差异较大，无法实现两者之间的直接焊接的连接，需要寻找新的连接材料及技术。
[0006] 发明内容
[0007] 本实用新型的目的在于克服现有技术的不足，提供一种反应器的设计及制造技术。
[0008] 钛材与不锈钢组合结构的丙烯酸酯酯化反应器，不同于传统的同类设备，不是全部采用不锈钢材质，设备主体材质为不锈钢SSA31603材质，内部加热盘管材质为钛材的SB338Gr.2。此选材设计即保证了盘管的使用寿命，又避免了设备整体造价过高。同时，还原因钛材的密度小，不锈钢的密度大，盘管采用钛管材后，设备的重量下降，因此，其运输、安装等费用相应降低，会进一步降低设备成本。
[0009] 钛材与不锈钢组合结构的丙烯酸酯酯化反应器，蒸汽在盘管内，腐蚀介质在设备主体内，蒸汽不接触设备的壳体，采用“封板-套管”的结构形式，所述“封板-套管”的结构，即利用钛制封板、钛盘管以钎焊形式与不锈钢壳体连接，进行异种金属之间的连接过渡。
[0010] 钛盘管伸出壳体处，与不锈钢壳体采用封板形式进行过渡连接，封板预先预制R弧与筒体贴合；封板内部与钛管之间采用钛的氩弧焊接，封板外部与不锈钢筒体之间采用钛-不锈钢钎焊焊接，主要起密封作用。不锈钢套管套在伸出壳体的钛盘管接管处，一端与不锈钢筒体焊接连接，另一端与衬钛不锈钢法兰的钢基层焊接连接，起到加强作用；钛盘管端头与不锈钢法兰的衬钛密封面处采用钛的氩弧焊接，主要起密封作用。对封焊后的焊缝表面按JB/T4730进行PT检测，按I级合格。
[0011] 反应器的异种金属焊接技术，选用Ag95CuNiLi钎料，以钎焊方式实现钛与不锈钢连接部位之间的密封连接。
[0012] 钛是活性金属，钛与铁在液态条件下无限互溶，在固态下有限互溶。当铁在钛材中的溶解度达到0.1 %以上时，将形成硬脆的金属间化合物，同时钛还会与铬、镍等形成复杂的金属间脆性化合物，造成接头塑性严重下降。当钛与不锈钢直接熔焊连接时，焊缝中的铁、铬、钥等合金元素必然超过其在钛材中的溶解度，形成大量的脆性金属间化合物和低溶共晶体。同时由于钛、不锈钢热物理性能的差异，焊接冷却过程中形成较大的焊接内应力，在应力的作用下，焊接接头将出现裂纹。因此这两种异种金属之间性能上的巨大差别，造成不锈钢材料与钛材之间，无法采用熔焊方法实现直接焊接成型。
[0013] 一种钛材与不锈钢组合结构的丙烯酸酯酯化反应器，其特征在于，反应器的主体，有壳体、反应物入口管及其法兰、反应后的物料出口管及其法兰，反应器的主体接触腐蚀性介质,主体的材质为不锈钢SS31603材质，反应器内接触腐蚀性介质的盘管内输送加热蒸汽，反应器内的加热盘管材质为钛材SB338Gr.2 ;钛盘管上的不锈钢法兰衬钛材密封面与不锈钢法兰采用钎焊连接，不锈钢法兰与不锈钢套管连接，不锈钢套管与不锈钢壳体连接，钛盘管上的钛制封板与不锈钢壳体采用钎焊连接；所述钎焊连接，钎焊为Ag95CuNiLi钎料。
[0014] 不锈钢套管起到加强作用，钛制封板起到密封和加强作用。
[0015] 不锈钢与不锈钢器件连接，钛材与钛材器件连接，采用常规作法。
[0016] 本实用新型的优点在于，制成的钛材与不锈钢材的反应器，将输送蒸汽的盘管采用钛材，将壳体、反应物入口管及其法兰、反应物出口管及其法兰采用不锈钢材料，可大大降低设备成本。不会使用过程中盘管磨损，不会导致这类设备容易损坏，在役有效期的使用时间加长，大大地提高化工产品的产量和经济效益，避免资源的浪费。
附图说明
[0017] 图1为本实用新型的结构示意图。
[0018] 图中有不锈钢法兰衬钛材密封面1、不锈钢法兰2、不锈钢套管3、不锈钢壳体4、钛制封板5、钛盘管6。
具体实施方式
[0019] 下面结合附图和具体实施例对本实用新型做出进一步地详细描述。
[0020] 如图1所示，一种钛材与不锈钢组合结构的丙烯酸酯酯化反应器，钛材与不锈钢材组合结构的反应器，腐蚀介质在不锈钢壳体4内，反应器的主体，有壳体、反应物入口管及其法兰、反应后的物料出口管及其法兰，反应器的主体接触腐蚀性介质，主体的材质为不锈钢SSA31603材质，接触腐蚀介质的反应器的钛盘管6内通过加热蒸汽，振动大，磨损等原因，导致这类设备容易损坏，在役有效期的使用时间往往很短，壳体内的加热钛盘管6材质为钛材的SB338Gr.2 ;钛盘管6上的不锈钢法兰衬钛材密封面I与不锈钢法兰2采用钎焊连接，不锈钢法兰2与不锈钢套管3连接，不锈钢套管3与不锈钢壳体4连接，成一整体，以加强壳体坚固；钛盘管6上的钛制封板5与不锈钢壳体4采用钎焊连接；所述钎焊连接，钎焊为Ag95CuNiLi钎料
[0021 ] 钛盘管6进入壳体的入口、出口，其结构方式是同样的。
[0022] 通过大量焊接试验和焊接接头分析，实验证明，采用钨极氩弧焊来加热低熔点的Ag95CuNiL钎料，利用焊接时钎料熔化后在钛、不锈钢之间近表面结合，形成了具有良好密封性能的钛材与不锈钢材的钎焊接头，可以实现异种金属的密封连接。经耐压试验及致密性检查，印证了此方法的可行性。
Claims (2)
1.一种钛材与不锈钢组合结构的丙烯酸酯酯化反应器，其特征在于，反应器的主体，有壳体、反应物入口管及其法兰、反应后的物料出口管及其法兰，反应器的主体接触腐蚀性介质,主体的材质为不锈钢SS31603材质，反应器内接触腐蚀性介质的盘管内输送加热蒸汽，反应器内的加热盘管材质为钛材SB338Gr.2 ;钛盘管(6)上的不锈钢法兰衬钛材密封面(I)与不锈钢法兰(2)采用钎焊连接，不锈钢法兰(2)与不锈钢套管(3)连接，不锈钢套管(3)与不锈钢壳体(4)连接，钛盘管(6)上的钛制封板(5)与不锈钢壳体(4)采用钎焊连接。
2.按照权利要求1所述的一种钛材与不锈钢组合结构的丙烯酸酯酯化反应器，其特征在于，所述的钎焊连接，钎焊为Ag95CuNiLi钎料。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103657561A (zh) * | 2013-11-23 | 2014-03-26 | 中国石油集团东北炼化工程有限公司吉林设计院 | 一种钛材与不锈钢材组合结构的丙烯酸酯酯化反应器 |
| CN109621861A (zh) * | 2019-02-14 | 2019-04-16 | 南京宝色股份公司 | 一种钽、锆、钛多种活性金属与低合金钢复合板制备的反应釜 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103657561A (zh) * | 2013-11-23 | 2014-03-26 | 中国石油集团东北炼化工程有限公司吉林设计院 | 一种钛材与不锈钢材组合结构的丙烯酸酯酯化反应器 |
| CN103657561B (zh) * | 2013-11-23 | 2015-11-25 | 中国石油集团东北炼化工程有限公司吉林设计院 | 一种钛材与不锈钢材组合结构的丙烯酸酯酯化反应器 |
| CN109621861A (zh) * | 2019-02-14 | 2019-04-16 | 南京宝色股份公司 | 一种钽、锆、钛多种活性金属与低合金钢复合板制备的反应釜 |
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