Oil-rich steam heat exchanger for crude benzene preparation

Abstract

The utility model relates to the technical field of refining heat exchangers, and discloses an oil-rich steam heat exchanger for crude benzene preparation, which comprises a shell I. A discharge pipe is fixedly connected to the inside of the shell I. A feed pipe is fixedly connected to the inside of the shell I. A heat exchange plate is arranged on the inner wall of the shell I. The feed pipe is fixedly connected to the inside of the shell. A connecting pipe is fixedly connected into the heat exchange plate, the two ends of the connecting pipe are fixedly connected to the outer wall of the heat exchange plate, a second shell is arranged on the outer wall of the first shell, the outer wall of the heat exchange plate is arranged on the outer wall of the second shell, and the outer wall of the discharging pipe is fixed into the heat exchange plate. The outer wall of the feeding pipe is fixedly connected to the interior of the heat exchange plate. According to the utility model, rich oil is fed into the heat exchange plate through the feeding pipe, steam enters the other shell through the air inlet pipe, the retention time of the steam in the shell is long, the rich oil is fully subjected to heat exchange to reach the required temperature, and the method enables the rich oil to be subjected to heat exchange quickly and reach the required temperature quickly.

Description

Technical Field

[0001] The utility model relates to the technical field of refining heat exchangers, in particular to an oil-rich steam heat exchanger for crude benzene preparation. Background Art

[0002] Crude benzene is an organic solvent, mainly composed of benzene and toluene, and usually contains a small amount of ethylbenzene and other impurities. It is extracted from coal tar, which is a by-product of the high-temperature dry distillation (coking) process of coal. However, when extracting benzene, it is necessary to heat the rich oil containing benzene, so a rich oil steam heat exchanger for crude benzene preparation is needed.

[0003] A Chinese patent document with the search announcement number CN218349299U discloses a steam heat exchanger with a descaling function, including a shell side and a tube side arranged in the shell side, the upstream end of the tube side is used to connect to a steam source, and the downstream end is used to connect to a steam trap, and a plurality of drain valves are arranged at the bottom of the shell side, and these drain valves are evenly distributed along the length direction of the shell side and are located below the tube side, and also include a first steam hose, the upstream end of the first steam hose is connected to the inlet of the tube side, and a valve is arranged, and the downstream end of the first steam hose forms a detachable connection with the medium outlet of each drain valve. The utility model has a simple structure and is easy to use. It can efficiently remove the scaling layer on the heat exchange tube and ensure the heat exchange efficiency of the heat exchanger. However, the device cannot quickly perform heat exchange treatment on the rich oil, and at the same time, after the steam is transported into the heat exchanger, it cannot reach the required temperature when exchanging heat with the rich oil. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an oil-rich steam heat exchanger for crude benzene preparation, aiming to improve the inability to quickly perform heat exchange treatment on the rich oil. At the same time, after the steam is transported into the heat exchanger, it cannot reach the required temperature when performing heat exchange on the rich oil.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an oil-rich steam heat exchanger for crude benzene preparation, comprising a shell one, a discharge pipe is fixedly connected to the interior of the shell one, a feed pipe is fixedly connected to the interior of the shell one, a heat exchange plate is arranged on the inner wall of the shell one, a connecting pipe is fixedly connected to the interior of the heat exchange plate, both ends of the connecting pipe are fixedly connected to the outer wall of the heat exchange plate, a shell two is arranged on the outer wall of the shell one, the outer wall of the heat exchange plate is arranged on the outer wall of the shell two, the outer wall of the discharge pipe is fixed to the interior of the heat exchange plate, the outer wall of the feed pipe is fixedly connected to the interior of the heat exchange plate, the interior of the shell two is fixedly connected to the air inlet pipe, the interior of the shell two is fixedly connected to the air outlet pipe, and a quick-release assembly is arranged on the interior of the shell one.

[0006] Furthermore, the quick-release assembly includes a pull block, and an outer wall of the pull block is slidably connected to an inner wall of the first shell.

[0007] Furthermore, the outer wall of the pull block is slidably connected to a slider, and the interior of the slider is slidably connected to a limiting column.

[0008] Furthermore, a spring is sleeved on the outer wall of the limiting column, and one end of the spring is fixedly connected to the outer wall of the sliding block.

[0009] Furthermore, the other end of the spring is fixedly connected to the inner wall of the pull block.

[0010] Furthermore, a connecting block is fixedly connected to the outer wall of the pulling block, and a clamping column is provided on the outer wall of the connecting block.

[0011] Furthermore, an insert block is fixedly connected to the outer wall of the clamping column, and the outer wall of the insert block is fixedly connected to the outer wall of the second housing.

[0012] Furthermore, a sliding groove is provided inside the pull block.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, the discharge pipe, feed pipe, air inlet pipe and air outlet pipe are connected respectively, the rich oil is sent into the heat exchange plate through the feed pipe, the steam enters another shell through the air inlet pipe, the steam stays in this shell for a long time, the rich oil is fully heat-exchanged to the required temperature, the rich oil contacts with the steam through the connecting pipe, further heats up, the rich oil is discharged through the discharge pipe, and the steam is discharged through the air outlet pipe at the same time, preventing the cooling steam from affecting the rich oil temperature. This method enables the rich oil to quickly exchange heat and quickly reach the required temperature.

[0015] 2. In the utility model, when it is necessary to clean the inside of the shell 2 and the discharge pipe, the pull block is pulled to move the connecting block downward and withdrawn from between the plug block and the clamping column, so that the shell 1 can be easily taken out from one side of the shell 2. At the same time, the spring is pulled and contracts. After the cleaning is completed, the shell 1 is clamped on one side of the shell 2, and the pull block is inserted back between the plug block and the clamping column. The spring pushes the connecting block to always be clamped between the plug block and the clamping column to prevent the shell 1 from falling off during use, thereby achieving the effect of quick disassembly and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of an oil-rich steam heat exchanger for crude benzene preparation proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the shell of an oil-rich steam heat exchanger for crude benzene preparation proposed by the utility model;

[0018] Figure 3 Based Figure 2 Enlarged view of point A in the middle.

[0019] Legend:

[0020] 1. Shell 1; 2. Discharge pipe; 3. Feed pipe; 4. Heat exchange plate; 5. Connecting pipe; 6. Shell 2; 7. Inlet pipe; 8. Outlet pipe; 9. Insert block; 10. Clamp column; 11. Pull block; 12. Slider; 13. Limiting column; 14. Spring; 15. Connecting block; 16. Slide groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Reference Figure 1 - Figure 2 The utility model provides an embodiment: an oil-rich steam heat exchanger for crude benzene preparation, comprising a shell 1, a discharge pipe 2 is fixedly connected to the inside of the shell 1, a feed pipe 3 is fixedly connected to the inside of the shell 1, a heat exchange plate 4 is arranged on the inner wall of the shell 1, a connecting pipe 5 is fixedly connected to the inside of the heat exchange plate 4, both ends of the connecting pipe 5 are fixedly connected to the outer wall of the heat exchange plate 4, a shell 2 6 is arranged on the outer wall of the shell 1, the outer wall of the heat exchange plate 4 is arranged on the outer wall of the shell 2 6, the outer wall of the discharge pipe 2 is fixed to the inside of the heat exchange plate 4, the outer wall of the feed pipe 3 is fixedly connected to the inside of the heat exchange plate 4, the inside of the shell 2 6 is fixedly connected to the air inlet pipe 7, the inside of the shell 2 6 is fixedly connected to the air outlet pipe 8, and a quick-release assembly is arranged inside the shell 1;

[0023] Specifically, the discharge pipe 2, the feed pipe 3, the air inlet pipe 7 and the outlet pipe 8 are respectively connected to the main components of the heat exchanger. This step is to ensure the smooth flow of various media in the equipment and create conditions for the subsequent heat transfer. Next, the rich oil containing benzene is sent to the heat exchange plate 4 inside the shell 1 through the feed pipe 3. This process is automatically completed by mechanical equipment. The rich oil exchanges heat with the steam on the heat exchange plate 4. The rich oil is transported upward through the feed pipe 3 below. This is because the density of the rich oil decreases during the heat exchange process, so that it can flow upward smoothly. At the same time, the steam is sent to the interior of the shell 2 6 through the air inlet pipe 7. The steam here plays a role in heat transfer, so that the rich oil reaches the required temperature during the heat exchange process. It is worth noting that the steam in the shell 2 6 has a longer residence time inside, which is to ensure that the rich oil can fully exchange heat and achieve the expected effect. After the rich oil exchanges heat with the steam, the rich oil is transported upward through the connecting pipe 5 between the two heat exchange plates 4. The purpose of this is to allow the rich oil to contact with the initial steam, thereby achieving the heating of the rich oil. This process helps to improve the heat exchange efficiency and shorten the period for the rich oil to reach the required temperature. Finally, the rich oil is discharged through the discharge pipe 2 for further processing. At the same time, the steam is discharged through the air outlet pipe 8 to prevent the cooled steam from affecting the temperature of the rich oil. This step is to ensure that the rich oil after heat exchange is not disturbed by external factors, thereby achieving the effect of rapid heat exchange. In summary, this heat exchanger realizes rapid heat exchange between rich oil and steam through a reasonable structure and operating process.

[0024] Reference Figure 3 The quick-release assembly includes a pull block 11, the outer wall of which is slidably connected to the inner wall of the housing 1; the outer wall of the pull block 11 is slidably connected to a slider 12, and the inner part of the slider 12 is slidably connected to a limit column 13; the outer wall of the limit column 13 is sleeved with a spring 14, one end of the spring 14 is fixedly connected to the outer wall of the slider 12; the other end of the spring 14 is fixedly connected to the inner wall of the pull block 11; the outer wall of the pull block 11 is fixedly connected to a connecting block 15, and the outer wall of the connecting block 15 is provided with a clamping column 10; the outer wall of the clamping column 10 is fixedly connected to an inserting block 9, and the outer wall of the inserting block 9 is fixedly connected to the outer wall of the housing 6; a sliding groove 16 is provided inside the pull block 11;

[0025] Specifically, when the cleaning work begins, first pull the pull block 11. The function of the pull block 11 is to drive the connecting block 15 to move downward. This design enables the connecting block 15 to be smoothly pulled out from between the plug block 9 and the card column 10. The purpose of this step is to facilitate the removal of the shell 1 from one side of the shell 2 6. After taking out the shell 1, it is also necessary to clean the inside of the shell 2 6. At this time, the spring 14 can be used for cleaning. Pull the spring 14 to shrink it, which will help the cleaning work. After the cleaning is completed, place the shell 1 on one side of the shell 2 6. Next, insert the pull block 11 between the plug block 9 and the card column 10. The key to this step is to use the force of the spring 14 to push the connecting block 15 to always be stuck between the plug block 9 and the card column 10. In this way, during use, the shell 1 can be tightly fixed on the shell 2 6, avoiding the possibility of accidental detachment. Through the above steps, while achieving quick disassembly and cleaning, while keeping the equipment clean, it also improves the user's operating convenience.

[0026] Working principle: When it is necessary to use an oil-rich steam heat exchanger for crude benzene preparation, the discharge pipe 2, the feed pipe 3, the air inlet pipe 7 and the air outlet pipe 8 are connected respectively, and the rich oil containing benzene is sent into the heat exchange plate 4 inside the shell 1 through the feed pipe 3, and the rich oil is transported upward through the feed pipe 3 below, and the steam is sent into the inside of the shell 2 6 through the air inlet pipe 7, and the steam can stay in the inside of the shell 2 6 for a longer time, so that the rich oil can be fully heat-exchanged to reach the required temperature, and then the rich oil is transported upward through the connecting pipe 5 between the two heat exchange plates 4 to make it contact with the initial steam, so as to facilitate the heating of the rich oil, and then the rich oil is discharged through the discharge pipe 2 for further processing, and the steam is discharged through the air outlet pipe 8. Prevent the cooling steam from affecting the temperature of the rich oil, thereby achieving the effect of quickly exchanging heat for the rich oil and preventing the rich oil from quickly reaching the required temperature. When it is necessary to clean the interior of the shell 2 6 and the shell 1, pull the pull block 11, and drive the connecting block 15 to move downward through the pull block 11, so that the connecting block 15 is pulled out from between the plug block 9 and the card column 10, so as to facilitate the removal of the shell 1 from one side of the shell 2 6, and at the same time pull the spring 14 to shrink the spring 14. After cleaning, the shell 1 is stuck on one side of the shell 2 6, and then the pull block 11 is inserted between the plug block 9 and the card column 10. The spring 14 pushes the connecting block 15 to always be stuck between the plug block 9 and the card column 10 to prevent the shell 1 from being detached during use, thereby achieving the effect of quick disassembly and cleaning.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An oil-rich steam heat exchanger for preparing crude benzene, comprising a housing (1), characterized in that: The interior of the shell one (1) is fixedly connected with a discharge pipe (2), the interior of the shell one (1) is fixedly connected with a feed pipe (3), the inner wall of the shell one (1) is provided with a heat exchange plate (4), the interior of the heat exchange plate (4) is fixedly connected with a connecting pipe (5), both ends of the connecting pipe (5) are fixedly connected to the outer wall of the heat exchange plate (4), the outer wall of the shell one (1) is provided with a shell two (6), the outer wall of the heat exchange plate (4) is arranged on the outer wall of the shell two (6), the outer wall of the discharge pipe (2) is fixed to the interior of the heat exchange plate (4), the outer wall of the feed pipe (3) is fixedly connected to the interior of the heat exchange plate (4), the interior of the shell two (6) is fixedly connected with an air inlet pipe (7), the interior of the shell two (6) is fixedly connected with an air outlet pipe (8), and the interior of the shell one (1) is provided with a quick-release assembly.

2. The oil-rich steam heat exchanger for crude benzene preparation according to claim 1, characterized in that: The quick-release assembly comprises a pull block (11), the outer wall of the pull block (11) being slidably connected to the inner wall of the housing 1 (1).

3. The oil-rich steam heat exchanger for crude benzene preparation according to claim 2, characterized in that: The outer wall of the pull block (11) is slidably connected to a slider (12), and the interior of the slider (12) is slidably connected to a limiting column (13).

4. The oil-rich steam heat exchanger for crude benzene preparation according to claim 3, characterized in that: The outer wall of the limiting column (13) is sleeved with a spring (14), and one end of the spring (14) is fixedly connected to the outer wall of the sliding block (12).

5. The oil-rich steam heat exchanger for crude benzene preparation according to claim 4, characterized in that: The other end of the spring (14) is fixedly connected to the inner wall of the pulling block (11).

6. The oil-rich steam heat exchanger for crude benzene preparation according to claim 5, characterized in that: The outer wall of the pulling block (11) is fixedly connected to a connecting block (15), and the outer wall of the connecting block (15) is provided with a clamping column (10).

7. The oil-rich steam heat exchanger for crude benzene preparation according to claim 6, characterized in that: The outer wall of the clamping column (10) is fixedly connected to an insert block (9), and the outer wall of the insert block (9) is fixedly connected to the outer wall of the second housing (6).

8. The oil-rich steam heat exchanger for crude benzene preparation according to claim 7, characterized in that: A sliding groove (16) is provided inside the pulling block (11).

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