Flushing structure of alcohol alkylation heat exchanger
By designing the flushing structure of the alcoholized heat exchanger, using the flushing pipe and the drain pipe, combining the cleaning pump and the scale cleaning liquid storage tank, the problems of large flushing workload and low efficiency in the traditional flushing method are solved, and efficient scale cleaning and heat exchange effect are achieved.
Patent Information
- Application Number
- CN202421356812.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-06-14
AI Technical Summary
The traditional alcoholized heat exchanger flushing method has the problem of large flushing workload and low flushing efficiency, which leads to high labor intensity for the operators and the inability to ensure the heat exchange effect.
An alcoholized heat exchanger flushing structure is designed, including the heat exchanger body, flushing pipe and drainage pipe. Through the cleaning pump and scale cleaning liquid storage tank, efficient flushing of scale on the outer wall of the heat exchange tube is achieved.
This structure can effectively reduce the labor intensity of workers, improve the flushing efficiency, ensure that the scale on the outer wall of the heat exchange pipe is removed in time, and maintain the heat exchange effect.
Smart Images
Figure CN222598644U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat exchangers, in particular to a flushing structure for an alcohol hydrocarbonation heat exchanger. Background Art
[0002] A company has two alcohol hydrocarbonation heat exchangers, one for operation and one for standby. When the temperature is high in summer, the two heat exchangers need to run simultaneously to exchange heat and cool H2 and N2. The working pressure of the pipe side of the alcohol hydrocarbonation heat exchanger is 13.5Mpa, the working temperature is 120℃, and the working pressure of the shell side is 0.4MPa, the working temperature is 30-40℃. After running for a period of time, a large amount of scale will form on the outer wall of the heat exchange tube of the alcohol hydrocarbonation heat exchanger, resulting in poor heat exchange effect and unable to guarantee its process indicators. Therefore, the alcohol hydrocarbonation heat exchanger needs to be flushed regularly to remove the scale on the outer wall of the heat exchange tube. The traditional method of flushing the alcohol hydrocarbonation heat exchanger is to extract the heat exchange tube and then flush it. The flushing workload is large, the labor intensity of the operators is high, and the flushing efficiency is low. Summary of the invention
[0003] In order to solve the problems of large flushing workload and low flushing efficiency in the traditional method for flushing an alcohol hydrocarbonation heat exchanger, the utility model provides a new flushing structure for an alcohol hydrocarbonation heat exchanger.
[0004] The utility model is realized by adopting the following technical solutions:
[0005] A flushing structure for an alcohol hydrocarbonation heat exchanger comprises a heat exchanger body, a flushing pipeline and a drainage pipeline. The heat exchanger body comprises a shell side, a tube side composed of a plurality of heat exchange tubes, a shell, a baffle, a gas medium inlet, a gas medium outlet, a cooling water inlet and a cooling water outlet. An inlet valve is provided at the cooling water inlet, and an outlet valve is provided at the cooling water outlet. One end of the flushing pipeline and one end of the drainage pipeline are both connected to the shell side of the heat exchanger body. A liquid inlet valve is provided on the flushing pipeline, and a liquid outlet valve is provided on the drainage pipeline.
[0006] When in use, prepare a cleaning pump and a storage tank containing scale cleaning liquid. When cleaning, close the inlet valve and the outlet valve, open the liquid inlet valve to drain the cooling water in the shell side, and then connect the other end of the flushing pipe with the liquid outlet of the cleaning pump, the liquid inlet of the cleaning pump is connected with the storage tank, and the other end of the liquid discharge pipe is used to discharge the scale cleaning liquid. Start the cleaning pump so that the scale cleaning liquid fills the entire shell side, open the liquid outlet valve, and the scale cleaning liquid flows in the shell side along the flow direction of the cooling water, thereby effectively flushing the scale on the outer wall of the heat exchange tube.
[0007] Furthermore, the flushing pipe is arranged below the shell and one end of it is connected to the lower part of the shell, and one end of the discharge pipe is connected to the middle part of the shell in the axial direction. The structure is specific and standardized, easy to arrange and has high flushing efficiency.
[0008] Furthermore, there are multiple flushing pipes and one ends of the multiple flushing pipes are evenly connected to the lower part of the shell side, thereby improving the flushing efficiency.
[0009] Furthermore, there are two drainage pipes, and one end of the two drainage pipes is respectively connected to the left end and the right end in the axial direction of the shell side. Providing more drainage pipes can effectively improve the flushing efficiency, which is suitable for large heat exchange tubes.
[0010] Furthermore, there are four drainage pipes and one end of the four drainage pipes is respectively connected to the upper left end, lower left end, upper right end and lower right end in the axial direction of the shell side. This structure is suitable for a heat exchanger with an axially arranged longitudinal partition plate in the middle of the shell side to effectively improve its flushing efficiency.
[0011] Furthermore, the other ends of the multiple flushing pipes are merged into a main flushing pipe. When in use, the main flushing pipe is connected to the liquid outlet of the cleaning pump, and the structure is concrete and rational.
[0012] The beneficial effects of the utility model are as follows: the alcohol hydrocarbonation heat exchanger flushing structure of the utility model ensures that the scale on the outer wall of the heat exchange tube can be flushed in time and conveniently, effectively reducing the labor intensity of operators and improving the flushing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The accompanying drawings herein are incorporated into and constitute a part of the specification, show embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0016] In the figure: 1-heat exchange tube, 2-shell, 3-baffle, 4-gas medium inlet, 5-gas medium outlet, 6-cooling water inlet, 7-cooling water outlet, 8-drainage pipe, 9-flushing pipe, 10-longitudinal partition plate, 11-general flushing pipe. DETAILED DESCRIPTION
[0017] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the scheme of the utility model will be further described below. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.
[0018] In the description, it should be noted that the terms "first" and "second" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.
[0020] The specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings.
[0021] like Figure 1 As shown, the heat exchange tube in the figure is a U-shaped heat exchange tube, a flushing structure of an alcohol hydrocarbonation heat exchanger, including a heat exchanger body, a flushing pipe 9, and a drainage pipe 8. The heat exchanger body includes a shell side, a tube side composed of multiple heat exchange tubes 1, a shell 2, a baffle 3, a gas medium inlet 4, a gas medium outlet 5, a cooling water inlet 6, and a cooling water outlet 7. An inlet valve is provided at the cooling water inlet 6, and an outlet valve is provided at the cooling water outlet 7. One end of the flushing pipe 9 and one end of the drainage pipe 8 are both connected to the shell side of the heat exchanger body. A liquid inlet valve is provided on the flushing pipe 9, and a liquid outlet valve is provided on the drainage pipe 8.
[0022] When in use, a cleaning pump and a storage tank containing scale cleaning liquid are prepared. When cleaning, close the inlet valve and the outlet valve, open the liquid inlet valve to drain the cooling water in the shell side, and then connect the other end of the flushing pipe 9 to the liquid outlet of the cleaning pump, the liquid inlet of the cleaning pump is connected to the storage tank, and the other end of the liquid discharge pipe 8 is used to discharge the scale cleaning liquid. Start the cleaning pump so that the scale cleaning liquid fills the entire shell side, open the liquid outlet valve, and the scale cleaning liquid flows in the shell side along the flow direction of the cooling water, thereby effectively flushing the scale on the outer wall of the heat exchange tube 1.
[0023] In specific implementation, the flushing pipe 9 is arranged below the shell 2 and one end of it is connected to the lower part of the shell side, and one end of the discharge pipe 8 is connected to the middle part of the shell side in the axial direction. The structure is concrete and standardized, easy to arrange and has high flushing efficiency.
[0024] During specific implementation, there are multiple flushing pipes 9 and one ends of the multiple flushing pipes 9 are evenly connected to the lower part of the shell side to improve the flushing efficiency.
[0025] In specific implementation, there are two drainage pipes 8 and one end of the two drainage pipes 8 is respectively connected to the left end and the right end in the axial direction of the shell side. The provision of more drainage pipes 8 can effectively improve the flushing efficiency, which is suitable for large heat exchange tubes 1.
[0026] In specific implementation, there are two and one end of four drainage pipes 8 are respectively connected to the upper left end, lower left end, upper right end and lower right end in the axial direction of the shell side. This structure is suitable for a heat exchanger with an axially arranged longitudinal partition plate 10 in the middle of the shell side to effectively improve its flushing efficiency.
[0027] In specific implementation, the other ends of the multiple flushing pipes 9 are merged into the main flushing pipe 11. When in use, the main flushing pipe 11 is connected to the liquid outlet of the cleaning pump, and the structure is concrete and reasonable.
[0028] During specific implementation, the flushing pipe 9 and the drainage pipe 8 are both pipes with a specification of DN50.
[0029] The above is only a specific implementation of the utility model, which enables those skilled in the art to understand or implement the utility model. Although detailed descriptions are given with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments, and they should all be covered by the protection scope of the claims.
Claims
1. A flushing structure for an alcohol hydrocarbonation heat exchanger, comprising a heat exchanger body, the heat exchanger body comprising a shell side, a tube side consisting of a plurality of heat exchange tubes (1), a shell (2), a baffle (3), a gas medium inlet (4), a gas medium outlet (5), a cooling water inlet (6), and a cooling water outlet (7), wherein an inlet valve is provided at the cooling water inlet (6), and an outlet valve is provided at the cooling water outlet (7), wherein: It also includes a flushing pipeline (9) and a drainage pipeline (8), one end of the flushing pipeline (9) and one end of the drainage pipeline (8) are both connected to the shell side of the heat exchanger body, the flushing pipeline (9) is provided with a liquid inlet valve, and the drainage pipeline (8) is provided with a liquid outlet valve.
2. The alcohol alkylation heat exchanger flushing structure according to claim 1, characterized in that: The flushing pipe (9) is arranged below the shell (2) and one end of which is connected to the lower part of the shell side. One end of the drainage pipe (8) is connected to the middle part of the shell side in the axial direction.
3. The alcohol alkylation heat exchanger flushing structure according to claim 2, characterized in that: There are multiple flushing pipes (9), and one end of each of the multiple flushing pipes (9) is evenly distributed and connected to the lower part of the shell side.
4. The alcohol alkylation heat exchanger flushing structure according to claim 3, characterized in that: There are two liquid discharge pipes (8), and one end of the two liquid discharge pipes (8) is respectively connected to the left end and the right end in the axial direction of the shell side.
5. The alcohol alkylation heat exchanger flushing structure according to claim 3, characterized in that: There are four drainage pipes (8), and one end of each of the four drainage pipes (8) is respectively connected to the upper left end, the lower left end, the upper right end, and the lower right end in the axial direction of the shell side.
6. The alcohol alkylation heat exchanger flushing structure according to claim 4 or 5, characterized in that: The other ends of the plurality of flushing pipes (9) merge into a main flushing pipe (11).