Reboiler for high-purity chemical substances

Abstract

The utility model provides a high purity chemical substance reboiler, relates to the technical field of reboilers, and comprises a reboiler main body, a first seal head is arranged on one side of the reboiler main body, a second seal head is arranged on one side of the reboiler main body far away from the first seal head, a liquid inlet is arranged on the top surface of the first seal head, and a liquid outlet is arranged on the side surface of the second seal head. A water inlet is formed in the end, close to the first sealing head, of the top face of the reboiler body, a hydraulic cylinder is adopted to do stage telescopic motion and drive a connecting rod to do reciprocating motion back and forth, and then the connecting rod moves back and forth to drive a movable frame to move; the inner pipe is driven to move together when the movable frame moves, and six threaded grooves are formed in the surface of the inner pipe, so that the inner wall of the interior of the heat exchange pipe is scraped through the threaded grooves in the surface of the inner pipe moving back and forth, and the purpose of cleaning a scale layer in the heat exchange pipe is achieved; the defect that a heat exchange tube cleaning method needs to be carried out in a shutdown state of equipment is overcome.

Description

TECHNICAL FIELD

[0001] The utility model relates to reboiler technical field especially relates to a reboiler of high purity chemical substance. BACKGROUND

[0002] According to the CS of low boiling tower reboiler of Chinese open (announcement) no. CN219376068U discloses, including reboiling equipment;The reboiling equipment top end middle part is installed with the gas outlet pipe that communicates its inside, the reboiling equipment bottom end one side is installed with the liquid outlet pipe that communicates its inside, the reboiling equipment bottom end other side is installed with the liquid inlet pipe that communicates its inside, the liquid inlet pipe middle part plug -in installation has filter device, the filter device includes first rectangle board, one side of the first rectangle board symmetry constructs two vertical boards, two the vertical board between plug -in installation has a plurality of filter plates, through the first rectangle board, vertical board, second rectangle board and filter plate that are equipped, the plurality of filter plates in the rectangular frame that is composed of the installation in first rectangle board, vertical board and second rectangle board carry out the filtration to the trichlorosilane crude liquid that enters the reboiler, can avoid the phenomenon that the reboiler is blocked.

[0003] The composition of high purity chemical substance is complex, under the high temperature, high pressure environment of reboiler, chemical reaction is easy to occur on the surface of heat exchange pipe, forms scale. Moreover, due to the continuity of production process, scale will accumulate continuously, if not cleaned in time during use, scale layer will thicken rapidly, not only reduces heat transfer efficiency, but also can cause pipe blockage and other serious problems.

[0004] And the above technical machine reboiler of prior art heat exchange pipe cleaning mode, whether mechanical cleaning or chemical cleaning, mostly needs to be carried out in the equipment shutdown state. Shutdown cleaning not only will interrupt the production process, causes the loss of production time, also will increase the cost of equipment start and debugging. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcoming that the method of heat exchange pipe cleaning in prior art needs to be carried out in the equipment shutdown state, and proposes a reboiler of high purity chemical substance.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: A reboiler of high purity chemical substance, including reboiler main part, one side of reboiler main part is equipped with first end cap, the one side of reboiler main part away from first end cap is equipped with second end cap, the top surface of first end cap is equipped with liquid inlet, the side of second end cap is equipped with liquid outlet, the top surface of reboiler main part is equipped with water inlet with one end near first end cap, the bottom surface of reboiler main part is equipped with water outlet with one end near second end cap, the inside of reboiler main part is equipped with two pipe racks, the middle intersection of two pipe racks is equipped with baffle, the inside circumference of reboiler main part is equipped with heat exchange pipe, the inside of heat exchange pipe is equipped with inner tube, the surface of inner tube is equipped with six thread grooves, the inside of first end cap is equipped with moving frame, the side of moving frame away from pipe rack is equipped with connecting rod, the side of first end cap away from reboiler main part is equipped with hydraulic cylinder, the both sides of hydraulic cylinder are equipped with mounting bracket.

[0007] Preferably, the first end cap and the second end cap are installed at both ends of the reboiler main body, and the first end cap and the second end cap are connected with the flanges of the reboiler main body.

[0008] Preferably, the baffles arranged in the middle of the two pipe racks are installed in the interior of the reboiler main body, the heat exchange pipes arranged in the circumferential array of the interior of the reboiler main body are installed at both ends of the two pipe racks, and the heat exchange pipes penetrate through the baffles.

[0009] Preferably, one end of the inner tube in the heat exchange pipe is installed on the moving frame, and the inner tube is threadedly connected with the moving frame.

[0010] Preferably, one end of the connecting rod penetrates out of the first end cap, one end of the connecting rod is threadedly connected with the moving frame, and one end of the connecting rod penetrating out of the first end cap is connected with the flange of the hydraulic cylinder.

[0011] Preferably, the two mounting brackets are mirror arranged with the hydraulic cylinder as the center, and the mounting brackets are installed on the surface of the first end cap, and the two mounting brackets are bolted with the first end cap.

[0012] Preferably, the hydraulic cylinder is installed on the surface of the first end cap through the two mounting brackets, and the hydraulic cylinder is bolted with the two mounting brackets.

[0013] Beneficial effects

[0014] The utility model discloses a reboiler main part is in use, through the control system opening hydraulic cylinder of reboiler main part makes hydraulic cylinder and drives connecting rod to move back and forth to move periodically and drive the back and forth movement of connecting rod, and the mobile frame moves, because the inner tube in the heat exchange pipe is with the mobile frame screw thread connection, makes the mobile frame and moves the inner tube together when moving, and because the surface of the inner tube is provided with six thread grooves, makes through the thread groove of the inner tube surface back and forth movement to scrape the inside inner wall of heat exchange pipe to reach the cleaning purpose of scale layer in the heat exchange pipe, solved the method of heat exchange pipe cleaning all need to be carried out under the equipment shutdown state's shortcoming. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the isometric view of the utility model;

[0016] Figure 2 It is the left view of the utility model;

[0017] Figure 3 It is the Figure 2 A-A section view of the utility model;

[0018] Figure 4 It is the local part drawing of the utility model;

[0019] Figure 5 It is the Figure 4 B-B section view of the utility model;

[0020] Figure 6 It is the local isometric view of the utility model.

[0021] Legend:

[0022] 1, reboiler main part;2, first end socket;3, second end socket;4, liquid inlet;5, liquid outlet;6, water inlet;7, water outlet;8, pipe support;9, baffle;10, heat exchange pipe;11, inner tube;12, thread groove;13, mobile frame;14, connecting rod;15, hydraulic cylinder;16, mounting bracket. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the following will be further described in combination with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without creative labor all belong to the protection scope of the utility model.

[0024] The specific embodiments of the utility model will be described below in combination with the drawings. Specific embodiment one:

[0026] Referring to Figures 1-6 A high-purity chemical reboiler, comprising a reboiler body 1, a first head 2 is arranged on one side of the reboiler body 1, a second head 3 is arranged on the side away from the first head 2 of the reboiler body 1, a liquid inlet 4 is arranged on the top surface of the first head 2, a liquid outlet 5 is arranged on the side surface of the second head 3, a water inlet 6 is arranged on the top surface of the reboiler body 1 close to one end of the first head 2, a water outlet 7 is arranged on the bottom surface of the reboiler body 1 close to one end of the second head 3, two tube racks 8 are arranged in the reboiler body 1, baffles 9 are arranged in the middle of the two tube racks 8, heat exchange tubes 10 are arranged in the circumferential direction of the reboiler body 1, inner tubes 11 are arranged in the heat exchange tubes 10, six thread grooves 12 are arranged on the surface of the inner tubes 11, a moving frame 13 is arranged in the first head 2, a connecting rod 14 is arranged on the side of the moving frame 13 away from the tube rack 8, a hydraulic cylinder 15 is arranged on the side of the first head 2 away from the reboiler body 1, mounting frames 16 are arranged on both sides of the hydraulic cylinder 15, the first head 2 and the second head 3 are mounted on both ends of the reboiler body 1, and the first head 2 and the second head 3 are flange-connected with the reboiler body 1, the baffles 9 arranged in the middle of the two tube racks 8 are mounted in the reboiler body 1, the heat exchange tubes 10 arranged in the circumferential direction of the reboiler body 1 are mounted on both ends of the two tube racks 8, and the heat exchange tubes 10 penetrate the baffles 9, one end of the inner tubes 11 in the heat exchange tubes 10 is mounted on the moving frame 13, and the inner tubes 11 are threadedly connected with the moving frame 13, one end of the connecting rod 14 penetrates out of the first head 2, one end of the connecting rod 14 is threadedly connected with the moving frame 13, and one end of the connecting rod 14 penetrating out of the first head 2 is flange-connected with the hydraulic cylinder 15, the two mounting frames 16 are mirror-imaged arranged with the hydraulic cylinder 15 as the center, and the mounting frames 16 are mounted on the surface of the first head 2, the two mounting frames 16 are bolted with the first head 2, the hydraulic cylinder 15 is mounted on the surface of the first head 2 through the two mounting frames 16, and the hydraulic cylinder 15 is bolted with the two mounting frames 16.(Note that the outer surface of the inner tube 11 is attached to the inner surface of the heat exchange tube 10)

[0027] The reboiler body 1 is the shell of the whole reboiler, which is used to accommodate various components inside, provide a closed space for evaporation and heat exchange of the material, and protect the internal structure and support other components. The first head 2 and the second head 3 are respectively installed at the left and right ends of the reboiler body 1, and are connected by flanges for easy disassembly and maintenance. The top surface of the first head 2 is provided with a liquid inlet 4 for introducing high-purity chemical substances that need to be evaporated; the center of the side surface of the second head 3 is provided with a liquid outlet 5 for discharging the evaporated liquid. The liquid inlet 4 is the inlet of the material into the reboiler, and the material enters the reboiler body 1 through it; the liquid outlet 5 is the channel for discharging the treated liquid, which discharges the remaining liquid after evaporation from the reboiler. The water inlet 6 is used to introduce the heating medium to provide heat for the reboiler, so that the entering material can be evaporated; the water outlet 7 is used to discharge the used heating medium. The tube support 8 is used to fix and support the heat exchange tube 10, to ensure the stability of the position of the heat exchange tube 10 inside the reboiler, so that the heat exchange tube 10 can be arranged in order, and the heat exchange efficiency is improved. The baffle 9 is arranged in an intersecting array between the two tube supports 8, which changes the flow path of the heating medium and the material, increases the disturbance degree of the fluid, and makes the heating medium and the material more fully exchange heat, thereby improving the heat transfer effect. The heat exchange tube 10 is the key component for heat transfer, the inside of which passes the high-purity chemical substances that need to be treated, and the outside of which is heated by the heating medium, so that the material is heated and evaporated in the tube. The inner tube 11 is located inside the heat exchange tube 10, and its outer surface is attached to the inner surface of the heat exchange tube 10, and six thread grooves 12 are provided on its surface. Under the drive of components such as hydraulic cylinders 15, the inner tube 11 moves back and forth in the heat exchange tube 10, and the thread grooves 12 can remove the scale layer on the inner wall of the heat exchange tube 10, thereby playing a cleaning role. The thread groove 12 is a structure on the inner tube 11 for cleaning the scale layer, which can clean the scale layer in the process, solve the problem that when the inner tube 11 moves, the edges of the thread groove 12 contact the scale layer on the inner wall of the heat exchange tube 10, and the scale layer is scraped and the scale chips are removed along the thread groove 12 through the conventional heat exchange tube 10, thereby realizing the cleaning of the inner wall of the heat exchange tube 10. During heat exchange, the thread groove 12 changes the flow state of the material from ordinary axial flow to complex flow with a spiral component, which increases the flow velocity distribution gradient of the material, thins the boundary layer, and makes the heat transfer more smooth. The moving frame 13 is installed inside the first head 2 and is threadedly connected with all the inner tubes 11, which is used to drive the inner tube 11 to move. Under the action of the connecting rod 14, the moving frame 13 moves back and forth in the first head 2, thereby driving the inner tube 11 to move synchronously in the heat exchange tube 10, thereby realizing the cleaning operation of the inner tube 11 to the scale layer on the inner wall of the heat exchange tube 10. One end of the connecting rod 14 is threadedly connected with the moving frame 13, and the other end penetrates the first head 2 and is connected with the flange of the hydraulic cylinder 15. It transmits the extension and retraction movement of the hydraulic cylinder 15 to the moving frame 13, thereby realizing the reciprocating movement of the moving frame 13 (it should be noted that the place where the connecting rod 14 penetrates out of the first head 2 is sealed).The hydraulic cylinder 15 is installed on the surface of the first head 2 through two mounting brackets 16, and performs periodic extension and retraction to provide power for the movement of the inner tube 11, drive the connecting rod 14, the moving frame 13 and the inner tube 11 to move back and forth. The working process is as follows: after the control system of the reboiler main body 1 issues an instruction, hydraulic oil enters the hydraulic cylinder 15 through the oil inlet. Under the action of the pressure of the hydraulic oil, the piston of the hydraulic cylinder 15 starts to move, pushing the piston rod to extend (or retract). The piston rod of the hydraulic cylinder 15 is connected with the flange of the connecting rod 14, so as to drive the connecting rod 14 to move back and forth. In this process, by adjusting the flow and pressure of the hydraulic oil, the extension and retraction speed and strength of the hydraulic cylinder 15 can be accurately controlled, and then the movement speed and stroke of the moving frame 13 and the inner tube 11 can be accurately controlled. When it is needed to stop cleaning, the control system controls the hydraulic oil to stop entering the hydraulic cylinder 15, and the hydraulic oil in the hydraulic cylinder 15 is discharged through the oil return port, so that the piston rod stops moving, and the control of the cleaning action is completed. The mounting bracket 16 is used to fix the hydraulic cylinder 15, which is mirror-imaged around the hydraulic cylinder 15 on the surface of the first head 2, and is connected with the first head 2 and the hydraulic cylinder 15 through bolts, so as to ensure the stability of the installation of the hydraulic cylinder 15. Embodiment two:

[0029] With reference to Figures 1-6 A reboiler for high-purity chemical substances, further based on the basic structure in embodiment one, when using the reboiler, high-purity chemical substances flow into the heat exchange tube 10 inside the reboiler main body 1 from the liquid inlet 4. At the same time, the heating medium enters the reboiler main body 1 from the water inlet 6, and the flow path of the heating medium is changed under the action of the baffle 9, so that it can more fully exchange heat with the heat exchange tube 10. In the heat exchange tube 10, the material and the heating medium exchange heat through the tube wall, and the material is evaporated by heat, and the evaporated liquid is discharged from the liquid outlet 5.

[0030] During the heat exchange process, the thread groove 12 on the surface of the inner tube 11 changes the flow state of the material, increases the contact area and contact time of the material with the tube wall, strengthens the heat transfer process, and improves the heat exchange efficiency.

[0031] When it is necessary to clean the scale layer on the inner wall of the heat exchange tube 10, the control system of the reboiler body 1 opens the hydraulic cylinder 15. The hydraulic cylinder 15 begins to perform a phased telescopic movement, driving the moving frame 13 to reciprocate back and forth within the first end cap 2 via the connecting rod 14. Since the inner tube 11 is threadedly connected to the moving frame 13, the movement of the moving frame 13 drives the inner tube 11 to move back and forth synchronously within the heat exchange tube 10. During the movement, the threaded grooves 12 on the surface of the inner tube 11 contact the inner wall of the heat exchange tube 10, scraping and cleaning the scale layer, peeling it off from the inner wall of the heat exchange tube 10 and removing it. This achieves online cleaning of the heat exchange tube 10 during use, solving the problem of equipment shutdown required for traditional heat exchange tube 10 cleaning, ensuring the continuous and stable operation of the reboiler, and improving production efficiency and product quality.

[0032] In summary:

[0033] 1. When using the reboiler body 1, the hydraulic cylinder 15 is opened through the control system of the reboiler body 1, causing the hydraulic cylinder 15 to perform a phased extension and retraction movement and drive the connecting rod 14 to move back and forth. The back and forth movement of the connecting rod 14 drives the moving frame 13 to move. Since the inner tube 11 inside the heat exchange tube 10 is threadedly connected to the moving frame 13, the movement of the moving frame 13 will drive the inner tube 11 to move together. Since the surface of the inner tube 11 has six threaded grooves 12, the inner wall of the heat exchange tube 10 is scraped off by the threaded grooves 12 on the surface of the reciprocating inner tube 11, thereby cleaning the scale inside the heat exchange tube 10. This solves the disadvantage that the cleaning of the heat exchange tube 10 must be carried out when the equipment is stopped.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A reboiler for high purity chemical substances, comprising a reboiler body (1), characterized in that: One side of the reboiler body (1) is provided with a first head (2), and the side of the reboiler body (1) away from the first head (2) is provided with a second head (3); the top surface of the first head (2) is provided with a liquid inlet (4), and the side surface of the second head (3) is provided with a liquid outlet (5); the top surface of the reboiler body (1) is provided with a water inlet (6) near one end of the first head (2), and the bottom surface of the reboiler body (1) is provided with a water outlet (7) near one end of the second head (3); the inside of the reboiler body (1) is provided with two tube racks (8), and the middle of the two tube racks (8) is provided with a baffle (9); the inside of the reboiler body (1) is provided with a plurality of heat exchange tubes (10) arranged in a circular array; the inside of each heat exchange tube (10) is provided with an inner tube (11); the surface of the inner tube (11) is provided with six threaded grooves (12); the inside of the first head (2) is provided with a moving frame (13); the side of the moving frame (13) away from the tube rack (8) is provided with a connecting rod (14); the side of the first head (2) away from the reboiler body (1) is provided with a hydraulic cylinder (15); and the two sides of the hydraulic cylinder (15) are provided with mounting frames (16).

2. A high purity chemical substance reboiler as claimed in claim 1, wherein: The first head (2) and the second head (3) are both mounted at the two ends of the reboiler body (1), and the first head (2) and the second head (3) are both flange-connected with the reboiler body (1).

3. A high purity chemical substance reboiler as claimed in claim 1, wherein: The baffle (9) arranged in the middle of the two tube racks (8) is mounted in the inside of the reboiler body (1), and the two ends of the heat exchange tube (10) arranged in a circular array in the inside of the reboiler body (1) are both mounted on the two tube racks (8), and the heat exchange tube (10) penetrates through the baffle (9).

4. A high purity chemical material reboiler as claimed in claim 1, wherein: One end of the inner tube (11) in the inside of the heat exchange tube (10) is mounted on the moving frame (13), and the inner tube (11) is threadedly connected with the moving frame (13).

5. A high purity chemical substance reboiler as claimed in claim 1, wherein: One end of the connecting rod (14) penetrates out of the first head (2), one end of the connecting rod (14) is threadedly connected with the moving frame (13), and the end of the connecting rod (14) penetrating out of the first head (2) is flange-connected with the hydraulic cylinder (15).

6. A high purity chemical material reboiler as claimed in claim 1, wherein: The two mounting frames (16) are mirror-imaged with the hydraulic cylinder (15) as the center, and the mounting frames (16) are both mounted on the surface of the first head (2), and the two mounting frames (16) are both bolted with the first head (2).

7. A high purity chemical material reboiler as claimed in claim 1, wherein: The hydraulic cylinder (15) is mounted on the surface of the first head (2) through the two mounting frames (16), and the hydraulic cylinder (15) is bolted with the two mounting frames (16).

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