WO2023231210A1 - 一种uop丙烷脱氢装置反应器及其检修方法 - Google Patents

一种uop丙烷脱氢装置反应器及其检修方法 Download PDF

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Publication number
WO2023231210A1
WO2023231210A1 PCT/CN2022/116999 CN2022116999W WO2023231210A1 WO 2023231210 A1 WO2023231210 A1 WO 2023231210A1 CN 2022116999 W CN2022116999 W CN 2022116999W WO 2023231210 A1 WO2023231210 A1 WO 2023231210A1
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Prior art keywords
net
uop
mesh
ring plate
propane dehydrogenation
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PCT/CN2022/116999
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English (en)
French (fr)
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丁龙
占德庆
纪擘
潘新宇
吴明傲
李文蔚
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中国化学工程第三建设有限公司
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Priority to US18/235,367 priority Critical patent/US12043802B2/en
Publication of WO2023231210A1 publication Critical patent/WO2023231210A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
    • C07C5/32—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen
    • C07C5/327—Formation of non-aromatic carbon-to-carbon double bonds only
    • C07C5/333—Catalytic processes

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  • the invention belongs to the technical field of dehydrogenation device reactors, and particularly relates to a UOP propane dehydrogenation device reactor and its maintenance method.
  • the reaction of dehydrogenating organic compounds at high temperature and in the presence of a catalyst or dehydrogenation agent is a form of oxidation reaction.
  • the propane dehydrogenation reactor is a production equipment used for propane dehydrogenation.
  • the catalytic section includes an internal network, an external network, and a conical distributor, all of which need to be hoisted during installation and maintenance.
  • the internal network and the external network are dismantled separately.
  • a manned vehicle is required. The tray is lowered to the bottom of the reactor, and the connecting bolts of the inner and outer nets are removed.
  • the primary purpose of the present invention is to provide a UOP propane dehydrogenation device reactor and its maintenance method.
  • a UOP propane dehydrogenation device reactor including:
  • the reduction cylinder and the catalytic cylinder are connected by a sealing flange and a feed elbow located at the lower end of the catalytic cylinder.
  • the interior of the catalytic cylinder is located on the same axis and is provided with a conical distributor, an inner net, and an outer net in sequence from the inside to the outside.
  • the upper ends of the conical distributor, inner net, and outer net are all connected to an upper cover plate through bolt washers.
  • the lower ends of the inner mesh and the outer mesh are connected to the lower cover plate through connecting bolts.
  • An expansion joint structure is movably installed between the lower end of the lower cover plate and the inner wall of the bottom end of the catalytic barrel.
  • the inner mesh is connected to the feed elbow. There is a tapered transition section between the feed inlets.
  • both ends of the upper cover plate located between the inner mesh and the outer mesh are provided with upper catalyst delivery pipes, and the lower ends of both sides of the lower cover plate located between the inner mesh and the outer mesh are provided with lower catalyst delivery pipes.
  • the lower end of the catalytic cylinder is provided with a limiting sleeve connected to the lower catalyst delivery pipe.
  • a central purge pipe extending to the inner bottom of the conical distributor is provided at the axis of the upper cover plate at the upper end of the conical distributor.
  • the central purge pipe located above the upper cover plate passes through a right-angled The tube extends to the outside of the reduction barrel.
  • the lower cover is annular, and the bottom end is flush with the bottom ends of the inner net and the outer net.
  • the connecting bolts between the inner net, the outer net and the lower cover are respectively located inside. One side of the net and the outer net.
  • the expansion joint structure includes an outer ring plate and an inner ring plate whose lower ends are integrally connected and have height differences.
  • the outer ring plate is provided with an outer expansion portion in the vertical direction, and the inner ring plate There is an inner expansion part in the vertical direction, a connecting ring is provided between the flush upper end of the inner ring plate and the outer ring plate, and the inner side of the top end of the inner ring plate has a slope that matches the tapered transition section.
  • the outer wall of the outer ring plate is provided with a chute for sliding the connecting ring.
  • the upper end of the integral connection between the outer ring plate and the bottom end of the inner ring plate is provided with a screw rod extending above the connecting ring.
  • the head of the screw rod is provided with a bolt.
  • the upper end of the outer ring plate is provided with a clamping groove, and the bottom end of the lower cover plate is connected to the clamping slot through a sealing snap ring, and the sealing snap ring is made of thermal expansion and contraction material.
  • anti-deformation rods are evenly distributed in the vertical direction between the inner net and the outer net.
  • One end of the anti-deformation rod is fixed on the outer net, and the other end is connected to the outer net through an elastic telescopic rod and a connecting rod.
  • An inclined wedge is provided at the upper end, and a wedge groove matching the wedge is provided on the outer wall of the inner mesh.
  • a maintenance method for the above-mentioned UOP propane dehydrogenation device reactor includes the following steps:
  • the inner net and outer net can be prevented from twisting and deforming, and after being lifted out and the connecting bolts of the inner net are released, the inner net can slowly deform due to its own weight. External network separation.
  • Figure 1 is a schematic diagram of the internal structure of the reactor of the UOP propane dehydrogenation device of the present invention
  • Figure 2 is a schematic bottom structural diagram of the reactor of the UOP propane dehydrogenation device of the present invention
  • Figure 3 is a schematic diagram of the connection between the internal network and the external network of the UOP propane dehydrogenation device reactor of the present invention.
  • the UOP propane dehydrogenation device reactor of this embodiment includes:
  • the reduction cylinder 2 and the catalytic cylinder 1 are connected from end to end through sealing flanges, as well as the feed elbow 7 located at the lower end of the catalytic cylinder 1. There is a small expansion joint around the feed elbow 7.
  • the inside of the catalytic cylinder 1 is located on the same axis and faces from the inside.
  • the upper ends of the conical distributor 3, inner network 4, and outer network 5 are connected to an upper cover plate through bolt washers.
  • the inner network 4 and the outer network are The lower ends of the net 5 are connected to the lower cover plate 10 through connecting bolts 12.
  • the lower cover plate 10 is annular, and the bottom end is flush with the bottom ends of the inner net 4 and the outer net 5.
  • the inner net 4 and the outer net 5 are flush with the lower cover.
  • the connecting bolts 12 between the plates 10 are located on one side of the inner net 4 and the outer net 5 respectively. After the inner net, the outer net and the lower cover are lifted out as a whole, it is convenient for workers to remove the connecting bolts 12.
  • the lower end of the lower cover 10 is connected to An expansion joint structure 8 is movably installed between the inner walls of the bottom end of the catalytic barrel 1, and a tapered transition section 18 is provided between the inner mesh 4 and the feed port of the feed elbow 7.
  • Upper catalyst transport pipes 61 are provided at both ends of the upper cover plate between the inner network 4 and the outer network 5, and lower catalyst transport pipes 61 are provided at the lower ends of both sides of the lower cover plate 10 between the inner network 4 and the outer network 5.
  • pipe 62 wherein the lower catalyst transport pipe 62 can also pass through the lower cover plate 10 and be fixedly connected to the bottom end of the outer network 5.
  • the feed elbow 7 at the lower end of the catalytic cylinder 1 is surrounded by a limit sleeve that is sleeved on the lower catalyst transport pipe 62.
  • the axis of the upper cover plate located at the upper end of the conical distributor 3 is provided with a central purge pipe 9 extending to the inner bottom of the conical distributor 3.
  • the central purge pipe 9 located above the upper cover plate extends to the reduction cylinder 2 through a right-angle pipe. Externally, the central purge pipe 9 and the right-angle pipe are connected through flanges.
  • the expansion joint structure 8 includes an outer ring plate 81 and an inner ring plate 82 that are integrally connected at the lower end and have a height difference.
  • the outer ring plate 81 is provided with an outer expansion portion 83 in the vertical direction, and the inner side of the top end of the inner ring plate 82 has a tapered transition.
  • the outer ring plate 81 and the outer expansion part 83 compensate for the lateral and axial displacement of the inner and outer meshes.
  • the inner ring plate 82 is provided with an inner expansion part 84 in the vertical direction.
  • the top of the inner ring plate 82 has an inner expansion part 84.
  • the slope and the inner expansion portion 84 cooperate to prevent deformation or damage caused by thermal elongation or temperature stress when the tapered transition section 18 heats up, thereby increasing stability.
  • the upper end of the inner ring plate 82 is flush with the outer ring plate 81 There is a connecting ring between them, and the outer wall of the outer ring plate 81 is provided with a chute 86 for sliding the connecting ring.
  • the upper end of the integral connection between the bottom ends of the outer ring plate 81 and the inner ring plate 82 is provided with a screw 85 that extends to the top of the connecting ring.
  • the upper end of the outer ring plate 81 is provided with a clamping groove, and the bottom end of the lower cover plate 10 is connected to the clamping slot through a sealing snap ring 11.
  • the connection method is simple and easy to remove.
  • the sealing snap ring 11 is made of thermal expansion and contraction material to increase response. Process tightness.
  • anti-deformation rods 13 there are evenly distributed anti-deformation rods 13 in the vertical direction between the inner net 4 and the outer net 5.
  • One end of the anti-deformation rod 13 is fixed on the outer net 5, and the other end is connected through an elastic telescopic rod 17 and a connecting rod 16.
  • the upper end of the anti-deformation rod 13 is provided with a slope.
  • the wedge block 14, the outer wall of the inner net 4 is provided with a wedge groove 15 that matches the wedge block 14, which can prevent the inner net 4 and the outer net 5 from twisting and deforming, and after lifting out, after releasing the connecting bolts 12 of the inner net 4,
  • the inner net 4 can be slowly separated from the outer net 5 due to its own weight.
  • the inner net 4 when the connecting bolts 12 of the inner net 4 are released, the inner net 4 will fall due to its own weight, but at the same time it will be blocked by the wedge 14, and due to the wedge 14 It has a slope. Although it will be blocked when it falls, it does not hinder the fall.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)

Abstract

一种UOP丙烷脱氢装置反应器及其检修方法，属于脱氢装置反应器技术领域，包括首尾相连的还原筒和催化筒以及位于催化筒下端的进料弯管，催化筒内部位于同一轴线且由内向外依次设置有锥形分布器、内网、外网，锥形分布器、内网、外网的上端均通过螺栓垫片与一上盖板连接，内网和外网的下端均通过连接螺栓与下盖板连接，下盖板的下端与催化筒底端内壁之间活动安装有膨胀节结构，内网与进料弯管的进料口之间设有锥形过渡段。通过内网、外网和下盖板整体的设计，便于整体吊出，可以避免工人下放到狭小的反应器内部拆除螺栓，避免人员受伤。

Description

一种UOP丙烷脱氢装置反应器及其检修方法 技术领域
本发明属于脱氢装置反应器技术领域，特别涉及一种UOP丙烷脱氢装置反应器及其检修方法。
背景技术
脱氢有机化合物在高温及催化剂或脱氢剂存在下脱去氢的反应，是氧化反应的一种形式，丙烷脱氢反应器是一种用于丙烷脱氢的生产设备。
丙烷脱氢反应器大多体积大，质量重，包括还原段、催化段、进料弯管，催化段包括内网、外网、锥形分布器，在安装和检修的过程中均需要进行吊装。在检修吊装的过程中极易出现内网和外网移位的问题，大大降低了吊装的安全性，在拆卸检修时，内网和外网是分别拆除的，内网拆除时需要乘坐载人托盘，下放到反应器内底部，拆除内外网连接螺栓；外网拆除时，需要进入设备壳层与外网夹层；但是反应器内部存在内外网时，活动空间极为狭小，工人不便于操作，且内外网的存在会导致反应器底部空气不流通，而且反应器底端仍然残留不利于人体的气体，工人进入反应器内部，具有一定的危险。因此，提出一种UOP丙烷脱氢装置反应器及其检修方法。
发明内容
为了解决上述问题，本发明的首要目的在于提供一种UOP丙烷脱氢装置反应器及其检修方法。
通过以下制备工艺来实现上述目的：
一种UOP丙烷脱氢装置反应器，包括：
通过密封法兰相连的还原筒和催化筒以及位于催化筒下端的进料弯管，所述催化筒内部位于同一轴线且由内向外依次设置有锥形分布器、内网、外网，所述锥形分布器、内网、外网的上端均通过螺栓垫片与一上盖板连接，
所述内网和外网的下端均通过连接螺栓与下盖板连接，所述下盖板的下端与催化筒底端内壁之间活动安装有膨胀节结构，所述内网与进料弯管的进料口之间设有锥形过渡段。
作为上述技术方案的进一步改进，位于内网和外网之间的上盖板两端均贯穿设有上部催化剂输送管，位于内网和外网之间的下盖板两侧下端均设有下部催化剂输送管。
作为上述技术方案的进一步改进，所述催化筒下端设有套接在下部催化剂输送管的限位套管。
作为上述技术方案的进一步改进，位于锥形分布器上端的上盖板轴线处设有延伸至锥形分布器内底部的中心吹扫管，位于上盖板上方的所述中心吹扫管通过直角管延伸至还原筒外部。
作为上述技术方案的进一步改进，所述下盖板为环状，且底端与内网和外网底端齐平，所述内网和外网与下盖板之间的连接螺栓分别位于内网和外网的一侧。
作为上述技术方案的进一步改进，所述膨胀节结构包括下端一体连接且具有高度差的外环板和内环板，所述外环板竖直方向上设有外膨胀部，所述内环板竖直方向上设有内膨胀部，所述内环板的上端齐平处与外环板之间设有连接环，所述内环板的顶端内侧呈与锥形过渡段相匹配的斜面， 且外环板外壁上设有用于连接环滑动的滑槽，所述外环板和内环板底端一体连接处的上端设有延伸至连接环上方的螺杆，螺杆头部设有螺栓。
作为上述技术方案的进一步改进，所述外环板的上端设有卡槽，且下盖板的底端通过密封卡环与卡槽连接，所述密封卡环采用热胀冷缩材料制成。
作为上述技术方案的进一步改进，所述内网和外网之间竖直方向设有均匀分布的防变形杆，所述防变形杆一端固定在外网上，另一端通过弹性伸缩杆和连接杆连接有上端设有斜面的楔块，所述内网外壁设有与楔块相匹配的楔槽。
一种上述UOP丙烷脱氢装置反应器的检修方法，包括以下步骤：
(1)反应器内部注入中和液中和后排出中和液冷却，将反应器上部妨碍内件吊装的结构、管道、电加热器及仪表件进行拆除。
(2)将还原筒吊装移出，拆除锥形分布器、内网、外网连接的上盖板，在锥形分布器钢格栅上铺设彩条布，防止拆除工具及螺丝掉入分布器内部，然后将锥形分布器起吊移出；
(3)拆除进料弯管和催化筒的连接关系，用黑色橡胶保护连接法兰后，利用3根倒链同时作业，将弯头竖直缓慢下落至合适位置；
(4)在内网、外网的吊耳及筒体上做好标识，然后将内网、外网、下盖板整体吊出，吊出后，一方面将内网、外网、下盖板三者拆除，另一方面派工人下放到筒体底部检修膨胀节结构；
(5)对反应器各组分进行清洗、检修过后，按照拆除顺序依次回装。
本发明的有益效果在于：
(1)通过内网、外网和下盖板整体的设计，便于整体吊出，可以避免工人下放到狭小的反应器内部拆除螺栓，避免人员受伤。
(2)通过内网、外网、防变形杆等结构的设计，可以防止内网、外网扭曲变形，而且在吊出后，解除内网的连接螺栓后，可以使得内网由于自重缓慢从外网分离。
(3)通过设置的膨胀节结构，在使用时，一方面补偿内网、外网的横向、轴向位移，另一方面为了防止锥形过渡段升温时，由于热伸长或温度应力而引起的变形或破坏，增加稳定性；并且，在内网、外网和下盖板整体拆除后，由于螺杆、外环板、和内环板的设计，可以防止膨胀节弹起，避免造成外网无法回装的问题。
附图说明
图1是本发明UOP丙烷脱氢装置反应器的内部结构示意图；
图2是本发明UOP丙烷脱氢装置反应器的底部结构示意图；
图3是本发明UOP丙烷脱氢装置反应器的内网和外网连接示意图。
图示：1、催化筒；2、还原筒；3、锥形分布器；4、内网；5、外网；61、上部催化剂输送管；62、下部催化剂输送管；7、进料弯管；8、膨胀节结构；81、外环板；82、内环板；83、外膨胀部；84、内膨胀部；85、螺杆；86、滑槽；9、中心吹扫管；10、下盖板；11、密封卡环；12、连接螺栓；13、防变形杆；14、楔块；15、楔槽；16、连接杆；17、弹性伸缩杆；18、锥形过渡段。
具体实施方式
下面结合附图对本申请作进一步详细描述，有必要在此指出的是，以 下具体实施方式只用于对本申请进行进一步的说明，不能理解为对本申请保护范围的限制，该领域的技术人员可以根据上述申请内容对本申请做出一些非本质的改进和调整。
如图1-3所示，本实施例的UOP丙烷脱氢装置反应器，包括：
首尾通过密封法兰相连的还原筒2和催化筒1以及位于催化筒1下端的进料弯管7，进料弯管7的周围设有小膨胀节，催化筒1内部位于同一轴线且由内向外依次设置有锥形分布器3、内网4、外网5，锥形分布器3、内网4、外网5的上端均通过螺栓垫片与一上盖板连接，内网4和外网5的下端均通过连接螺栓12与下盖板10连接，下盖板10为环状，且底端与内网4和外网5底端齐平，内网4和外网5与下盖板10之间的连接螺栓12分别位于内网4和外网5的一侧，在内网、外网和下盖板整体吊出后，便于工人拆除连接螺栓12，下盖板10的下端与催化筒1底端内壁之间活动安装有膨胀节结构8，内网4与进料弯管7的进料口之间设有锥形过渡段18。
位于内网4和外网5之间的上盖板两端均贯穿设有上部催化剂输送管61，位于内网4和外网5之间的下盖板10两侧下端均设有下部催化剂输送管62，其中，下部催化剂输送管62也可以穿过下盖板10与外网5底端固定连接，催化筒1下端进料弯管7的周围设有套接在下部催化剂输送管62的限位套管，下部催化剂输送管62与限位套管的外部连接处设有小膨胀节，在内网、外网和下盖板整体吊出后，下部催化剂输送管62同时被吊出。
位于锥形分布器3上端的上盖板轴线处设有延伸至锥形分布器3内底部的中心吹扫管9，位于上盖板上方的中心吹扫管9通过直角管延伸至还原筒2外部，中心吹扫管9和直角管通过法兰连接。
膨胀节结构8包括下端一体连接且具有高度差的外环板81和内环板82，外环板81竖直方向上设有外膨胀部83，内环板82的顶端内侧呈与锥形过渡段18相匹配的斜面，外环板81及外膨胀部83补偿内网、外网的横向、轴向位移，内环板82竖直方向上设有内膨胀部84，内环板82顶端的斜面及内膨胀部84相配合防止锥形过渡段18升温时，由于热伸长或温度应力而引起的变形或破坏，增加稳定性，内环板82的上端齐平处与外环板81之间设有连接环，且外环板81外壁上设有用于连接环滑动的滑槽86，外环板81和内环板82底端一体连接处的上端设有延伸至连接环上方的螺杆85，螺杆85头部设有螺栓，在安装时，便于不同规格的锥形过渡段18与内环板82的适配度，并且通过螺杆85与连接环的固定连接，可以防止在拆除内外网后，膨胀节失去重力弹起，其会受到自身的拉力。
外环板81的上端设有卡槽，且下盖板10的底端通过密封卡环11与卡槽连接，连接方式简单易拆除，密封卡环11采用热胀冷缩材料制成，增加反应过程的密封性。
内网4和外网5之间竖直方向设有均匀分布的防变形杆13，防变形杆13一端固定在外网5上，另一端通过弹性伸缩杆17和连接杆16连接有上端设有斜面的楔块14，内网4外壁设有与楔块14相匹配的楔槽15，可以防止内网4、外网5扭曲变形，而且在吊出后，解除内网4的连接螺栓12后，可以使得内网4由于自重缓慢从外网5分离，具体的，当解除内网4的连接螺栓12后，内网4由于自重下落，但同时会受到楔块14的阻挡，又由于楔块14具有斜面，在下落时，虽然会受到阻挡，但不妨碍下落，在回装时，先将内网4从上吊装进外网5，对好槽后，由于自重，内网4直接和外网5对应。
本实施例丙烷脱氢装置反应器的检修方法，包括以下步骤：
(1)反应器内部注入中和液中和后排出中和液冷却，将反应器上部妨碍内件吊装的结构、管道、电加热器及仪表件进行拆除。
(2)将还原筒2吊装移出，拆除锥形分布器3、内网4、外网5连接的上盖板，在锥形分布器3钢格栅上铺设彩条布，防止拆除工具及螺丝掉入分布器内部，然后将锥形分布器3起吊移出；
(3)拆除进料弯管7和催化筒1的连接关系，用黑色橡胶保护连接法兰后，利用3根倒链同时作业，将弯头竖直缓慢下落至合适位置；
(4)在内网4、外网5的吊耳及筒体上做好标识，然后将内网4、外网5、下盖板10整体吊出，吊出后，一方面将内网4、外网5、下盖板10三者拆除，解除内网4和外网5与下盖板10之间的连接螺栓12，将下盖板10移出后，内网4由于自重下落，但同时会受到楔块14的阻挡，又由于楔块14具有斜面，且弹性伸缩杆17的伸缩作用，在下落时，内网4虽然会受到阻挡，但不妨碍下落，可以减缓下落速度，另一方面派工人下放到去除内外网后的筒体底部检修膨胀节结构8；
(5)对反应器各组分进行清洗、检修过后，按照拆除顺序依次回装，其中，在内外网回装时，先将内网4从上吊装进外网5，对好槽后，由于自重，内网4直接和外网5对应。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干改进，这些都属于本发明的保护范围。

Claims (9)

  1. 一种UOP丙烷脱氢装置反应器，其特征在于，包括：
    通过密封法兰相连的还原筒(2)和催化筒(1)以及位于催化筒(1)下端的进料弯管(7)，所述催化筒(1)内部位于同一轴线且由内向外依次设置有锥形分布器(3)、内网(4)、外网(5)，所述锥形分布器(3)、内网(4)、外网(5)的上端均通过螺栓垫片与一上盖板连接；
    所述内网(4)和外网(5)的下端均通过连接螺栓(12)与下盖板(10)连接，所述下盖板(10)的下端与催化筒(1)底端内壁之间活动安装有膨胀节结构(8)，所述内网(4)与进料弯管(7)的进料口之间设有锥形过渡段(18)。
  2. 根据权利要求1所述的UOP丙烷脱氢装置反应器，其特征在于，位于内网(4)和外网(5)之间的上盖板两端均贯穿设有上部催化剂输送管(61)，位于内网(4)和外网(5)之间的下盖板(10)两侧下端均设有下部催化剂输送管(62)。
  3. 根据权利要求2所述的UOP丙烷脱氢装置反应器，其特征在于，所述催化筒(1)下端设有套接在下部催化剂输送管(62)的限位套管。
  4. 根据权利要求1所述的UOP丙烷脱氢装置反应器，其特征在于，位于锥形分布器(3)上端的上盖板轴线处设有延伸至锥形分布器(3)内底部的中心吹扫管(9)，位于上盖板上方的所述中心吹扫管(9)通过直角管延伸至还原筒(2)外部。
  5. 根据权利要求1所述的UOP丙烷脱氢装置反应器，其特征在于，所述下盖板(10)为环状，且底端与内网(4)和外网(5)底端齐平，所述内网(4)和外网(5)与下盖板(10)之间的连接螺栓(12)分别位于 内网(4)和外网(5)的一侧。
  6. 根据权利要求1所述的UOP丙烷脱氢装置反应器，其特征在于，所述膨胀节结构(8)包括下端一体连接且具有高度差的外环板(81)和内环板(82)，所述外环板(81)竖直方向上设有外膨胀部(83)，所述内环板(82)竖直方向上设有内膨胀部(84)，所述内环板(82)的顶端内侧呈与锥形过渡段(18)相匹配的斜面，所述内环板(82)的上端齐平处与外环板(81)之间设有连接环，且外环板(81)外壁上设有用于连接环滑动的滑槽(86)，所述外环板(81)和内环板(82)底端一体连接处的上端设有延伸至连接环上方的螺杆(85)，螺杆(85)头部设有螺栓。
  7. 根据权利要求6所述的UOP丙烷脱氢装置反应器，其特征在于，所述外环板(81)的上端设有卡槽，且下盖板(10)的底端通过密封卡环(11)与卡槽连接，所述密封卡环(11)采用热胀冷缩材料制成。
  8. 根据权利要求1所述的UOP丙烷脱氢装置反应器，其特征在于，所述内网(4)和外网(5)之间竖直方向设有均匀分布的防变形杆(13)，所述防变形杆(13)一端固定在外网(5)上，另一端通过弹性伸缩杆(17)和连接杆(16)连接有上端设有斜面的楔块(14)，所述内网(4)外壁设有与楔块(14)相匹配的楔槽(15)。
  9. 一种如权利要求1-8任一所述的UOP丙烷脱氢装置反应器的检修方法，其特征在于，包括以下步骤：
    (1)反应器内部注入中和液中和后排出中和液冷却，将反应器上部妨碍内件吊装的结构、管道、电加热器及仪表件进行拆除。
    (2)解除还原筒(2)和催化筒(1)的连接关系，将还原筒(2)吊 装移出，拆除锥形分布器(3)、内网(4)、外网(5)连接的上盖板，在锥形分布器(3)钢格栅上铺设彩条布，防止拆除工具及螺丝掉入分布器内部，然后将锥形分布器(3)起吊移出；
    (3)拆除进料弯管(7)和催化筒(1)的连接关系，用黑色橡胶保护连接法兰后，利用3根倒链同时作业，将弯头竖直缓慢下落至合适位置；
    (4)在内网(4)、外网(5)的吊耳及筒体上做好标识，然后将内网(4)、外网(5)、下盖板(10)整体吊出，吊出后，一方面将内网(4)、外网(5)、下盖板(10)三者拆除，另一方面派工人下放到筒体底部检修膨胀节结构(8)；
    (5)对反应器各组分进行清洗、检修过后，按照拆除顺序依次回装。
PCT/CN2022/116999 2022-05-13 2022-09-05 一种uop丙烷脱氢装置反应器及其检修方法 WO2023231210A1 (zh)

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