A gas cooler for phthalic anhydride production

Abstract

An embodiment of the present invention discloses a gas cooler for phthalic anhydride production, which relates to the technical field of phthalic anhydride production. The gas cooler for phthalic anhydride production includes a shell assembly, an air inlet, an air outlet, a water inlet, a water outlet, a pipeline and a rotary spiral brush cleaning assembly. The shell assembly is provided with an accommodating space. The pipeline is installed in the accommodating space. The air inlet and the air outlet are both installed on the shell assembly and are respectively communicated with the pipeline. The water inlet and the water outlet are both installed on the shell assembly and are respectively communicated with the accommodating space. The rotary spiral brush cleaning assembly is installed on the pipeline and is used for cleaning the pipeline, so that the cooler can clean itself, will not corrode the heat dissipation fins, is convenient and fast, and improves the cleaning efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of phthalic anhydride production, and particularly to a gas cooler for phthalic anhydride production. Background Art

[0002] Phthalic anhydride, also known as phthalic anhydride, is currently widely used in industries such as chemical engineering, medicine, and fine chemical engineering. The cooling of phthalic anhydride gas is an important production process. When cooling phthalic anhydride gas, a gas cooler suitable for phthalic anhydride is required. The existing coolers in use are divided into coil type and fin type. During the use process, since a part of phthalic anhydride will adhere to the coil or fin, which will corrode the coil or fin, it is necessary to regularly clean the cooler. Currently, the cleaning is not convenient for disassembly, resulting in inconvenient cleaning and affecting the cleaning efficiency. Summary of the Invention

[0003] Based on this, it is necessary to provide a gas cooler for phthalic anhydride production, aiming to solve the technical problem that the existing coolers in use are divided into coil type and fin type. During the use process, since a part of phthalic anhydride will adhere to the coil or fin, which will corrode the coil or fin, it is necessary to regularly clean the cooler. Currently, the cleaning is not convenient for disassembly, resulting in inconvenient cleaning and affecting the cleaning efficiency.

[0004] The present invention provides a gas cooler for phthalic anhydride production. The gas cooler for phthalic anhydride production includes a shell assembly, an air inlet, an air outlet, a water inlet, a water outlet, a pipeline, and a rotary spiral brush cleaning assembly. The shell assembly is provided with a receiving space. The pipeline is installed in the receiving space. The air inlet and the air outlet are both installed on the shell assembly and are respectively communicated with the pipeline. The water inlet and the water outlet are both installed on the shell assembly and are respectively communicated with the receiving space. The rotary spiral brush cleaning assembly is installed on the pipeline and is used for cleaning the pipeline.

[0005] In one embodiment, the gas cooler for phthalic anhydride production further includes heat dissipation fins and copper sheets connected to the heat dissipation fins. The pipeline is provided with spiral grooves, and the groove walls of the spiral grooves are provided with openings communicating with the inside of the pipeline. The copper sheets are spirally inserted into the openings and partially disposed inside the pipeline. The rotary spiral brush cleaning assembly includes a coil, a mounting member, a mounting shaft, a magnetic core, and a cleaning member. The coil surrounds the pipeline. The mounting member is installed on the pipeline wall. The mounting shaft is connected to the mounting member and penetrates through the magnetic core. The magnetic core is connected to the cleaning member.

[0006] In one embodiment, the cleaning member includes a connecting rod, a first brush head and a second brush head connected to the connecting rod. The first brush head is used to brush off phthalic anhydride on the copper sheet, and the second brush head is used to brush off phthalic anhydride on the groove wall in the pipeline and phthalic anhydride on the inner wall of the pipeline.

[0007] In one embodiment, the gas cooler for phthalic anhydride production further includes a seal, which is installed in the groove and used to seal the connection between the opening and the copper sheet.

[0008] In one embodiment, the shell assembly includes an upper cover, a shell and a base, and the upper cover, the shell and the base enclose to form the accommodating space.

[0009] In one embodiment, the upper cover is detachably connected to the shell.

[0010] In one embodiment, the upper cover is provided with an air inlet channel and an air outlet channel. The upper cover is provided with a first flow channel, and the base is provided with a second flow channel. The pipeline is connected to the first flow channel and the second flow channel through a sealing sheet. The air inlet channel is connected to the air outlet channel through the first flow channel, the pipeline and the second flow channel. The air inlet is connected to the air inlet channel, and the air outlet is connected to the air outlet channel. The inner diameter of the first flow channel is larger than the inner diameter of the second flow channel.

[0011] In one embodiment, the base is further provided with a discharge channel connected to the second flow channel, and the phthalic anhydride and phthalic anhydride liquid brushed off in the pipeline flow into the discharge channel through the second flow channel.

[0012] In one embodiment, the gas cooler for phthalic anhydride production further includes a control valve, which is installed on the base and connected to the discharge channel.

[0013] In one embodiment, both the water inlet and the water outlet are installed on the shell, and the height of the water inlet is higher than the height of the water outlet, or the height of the water inlet is lower than the height of the water outlet.

[0014] Implementing the embodiments of the present invention will have the following beneficial effects:

[0015] Using the gas cooler for phthalic anhydride production of the present invention, the shell assembly of the gas cooler for phthalic anhydride production is provided with an accommodation space, the pipeline is installed in the accommodation space, the air inlet and the air outlet are both installed on the shell assembly and are respectively communicated with the pipeline, so that the phthalic anhydride gas can flow out from the air outlet through the pipeline from the air inlet, the water inlet and the water outlet are both installed on the shell assembly and are respectively communicated with the accommodation space, so that the coolant can flow out from the water outlet through the accommodation space from the water inlet, the rotary spiral brush cleaning assembly is installed on the pipeline and is used for cleaning the pipeline, so that the cooler can clean itself, will not corrode the heat dissipation fins, is convenient and fast, and improves the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Among them:

[0018] Figure 1 Is an axonometric schematic diagram of the gas cooler for phthalic anhydride production in one embodiment.

[0019] Figure 2 Is Figure 1 The front view of the gas cooler for phthalic anhydride production shown.

[0020] Figure 3 Is Figure 2 The sectional view taken along the line A-A of the gas cooler for phthalic anhydride production shown.

[0021] Figure 4 Is Figure 3 The partial enlarged schematic diagram of part B of the gas cooler for phthalic anhydride production shown.

[0022] Figure 5 Is Figure 1 The first-angle explosion schematic diagram of the gas cooler for phthalic anhydride production shown.

[0023] Figure 6 Is Figure 1 The second-angle explosion schematic diagram of the gas cooler for phthalic anhydride production shown.

[0024] Figure 7 Is Figure 1 The side view of the gas cooler for phthalic anhydride production shown.

[0025] Figure 8 Is Figure 7 The sectional view taken along the line C-C of the gas cooler for phthalic anhydride production.

[0026] Reference numerals:

[0027] 1. Housing assembly; 11. Upper cover; 111. Intake channel; 112. Outlet channel; 113. First flow channel; 12. Housing; 13. Base; 131. Second flow channel; 132. Discharge channel; 14. Accommodating space;

[0028] 2. Intake port; 3. Outlet port; 4. Water inlet; 5. Water outlet;

[0029] 6. Pipe; 61. Spiral groove; 62. Opening;

[0030] 7. Rotary spiral brush cleaning assembly; 71. Coil; 72. Mounting member; 73. Mounting shaft; 74. Magnetic core; 75. Cleaning member; 751. Connecting rod; 752. First brush head; 753. Second brush head;

[0031] 8. Heat dissipation fins; 9. Copper sheet; 101. Seal; 102. Control valve. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0034] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of the present invention is normally placed. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0035] In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0036] It should be noted that the features in the embodiments of the present invention can be combined with each other without conflict.

[0037] Please also combine with Figures 1 to 8, the gas cooler for phthalic anhydride production provided by the present invention will now be described.

[0038] A gas cooler for phthalic anhydride production includes a shell assembly 1, an air inlet 2, an air outlet 3, a water inlet 4, a water outlet 5, a pipeline 6, and a rotary spiral brush cleaning assembly 7. The shell assembly 1 is provided with a receiving space 14. The pipeline 6 is installed in the receiving space 14. The air inlet 2 and the air outlet 3 are both installed on the shell assembly 1 and are respectively connected to the pipeline 6. The water inlet 4 and the water outlet 5 are both installed on the shell assembly 1 and are respectively connected to the receiving space 14. The rotary spiral brush cleaning assembly 7 is installed on the pipeline 6 and is used to clean the pipeline 6.

[0039] It can be understood that the shell assembly 1 of the gas cooler for phthalic anhydride production is provided with a receiving space 14. The pipeline 6 is installed in the receiving space 14. The air inlet 2 and the air outlet 3 are both installed on the shell assembly 1 and are respectively connected to the pipeline 6, so that phthalic anhydride gas can flow out from the air outlet 3 through the pipeline 6 from the air inlet 2. The water inlet 4 and the water outlet 5 are both installed on the shell assembly 1 and are respectively connected to the receiving space 14, so that the coolant can flow out from the water outlet 5 through the receiving space 14 from the water inlet 4. The rotary spiral brush cleaning assembly 7 is installed on the pipeline 6 and is used to clean the pipeline 6, so that the cooler can clean itself, will not corrode the heat dissipation fins 8, is convenient and fast, and can improve the cleaning efficiency.

[0040] It should be noted that the air inlet 2 is connected to an external air pump. The air pump can transport phthalic anhydride gas into the pipeline 6 and flow into a gas storage tank, etc. from the air outlet 3, so that phthalic anhydride gas can continuously enter the pipeline 6. The water inlet 4 is connected to an external water pump. The water pump can transport the coolant into the receiving space 14 to cool down the pipeline 6. The cooled liquid flows out from the water outlet 5 to the water tank, so that the cooling water in the receiving space 14 continuously circulates to cool down the pipeline 6.

[0041] In this embodiment, the gas cooler for phthalic anhydride production further includes heat dissipation fins 8 and a copper sheet 9 connected to the heat dissipation fins 8. The pipeline 6 is provided with spiral grooves 61, and the groove wall of the spiral grooves 61 is provided with openings 62 communicating with the inside of the pipeline 6. The copper sheet 9 is spirally inserted into the openings 62 and partially arranged inside the pipeline 6. The rotary spiral brush cleaning assembly 7 includes a coil 71, a mounting member 72, a mounting shaft 73, a magnetic core 74, and a cleaning member 75. The coil 71 surrounds the pipeline 6, the mounting member 72 is installed on the pipeline 6 wall, the mounting shaft 73 is connected to the mounting member 72 and penetrates through the magnetic core 74, and the magnetic core 74 is connected to the cleaning member 75. The phthalic anhydride gas inside the pipeline 6 transfers heat to the copper sheet 9, and the heat of the copper sheet 9 is transferred to the heat dissipation fins 8 outside the pipeline 6, enabling the cooling water in the accommodation space 14 to cool the heat dissipation fins 8. Moreover, the heat dissipation fins 8 are arranged outside the pipeline 6, avoiding the corrosion of the heat dissipation fins 8 by the phthalic anhydride gas. The mounting shaft 73 penetrates through the magnetic core 74, enabling the magnetic core 74 to move on the mounting shaft 73. When the coil 71 is energized, the coil 71 generates a magnetic force, which can drive the magnetic core 74 to move on the mounting shaft 73. Since the copper sheet 9 and the wall surface of the groove are spiral, when the magnetic core 74 drives the cleaning member 75 to move, the spiral copper sheet 9 and the wall surface of the groove will guide the cleaning member 75 to rotate, thereby cleaning the copper sheet 9, the wall surface of the groove, and the inner wall of the pipeline 6. Then, the coil 71 is energized in the reverse direction, and the magnetic core 74 drives the cleaning member 75 to move in the reverse direction. At this time, the cleaning member 75 will clean the other side of the copper sheet 9 and the wall surface of the groove and clean the inner wall of the pipeline 6 again.

[0042] Specifically, the cleaning member 75 includes a connecting rod 751, a first brush head 752, and a second brush head 753 connected to the connecting rod 751. The first brush head 752 is used to brush off the phthalic anhydride on the copper sheet 9, and the second brush head 753 is used to brush off the phthalic anhydride on the groove wall inside the pipeline 6 and the phthalic anhydride on the inner wall of the pipeline 6. Since the phthalic anhydride in the gas flows inside the pipeline 6, the coolant outside the pipeline 6 cools the phthalic anhydride gas, resulting in the generation of phthalic anhydride crystals and liquefied phthalic anhydride water droplets on the copper sheet 9, the wall surface of the groove, and the inner wall of the pipeline 6. By providing the first brush head 752 and the second brush head 753, the copper sheet 9, the wall surface of the groove, and the inner wall of the pipeline 6 can be cleaned.

[0043] Furthermore, the gas cooler for phthalic anhydride production further includes a seal 101, which is installed in the groove and used to seal the connection between the opening 62 and the copper sheet 9. The seal 101 can be a high-temperature resistant sealing strip. By providing the seal 101, the copper sheet 9 can be firmly inserted into the opening 62, and the phthalic anhydride gas inside the pipeline 6 can be prevented from flowing out through the opening 62.

[0044] In addition, the housing assembly 1 includes an upper cover 11, a housing 12, and a base 13. The upper cover 11, the housing 12, and the base 13 enclose a receiving space 14. The base 13 and the housing 12 can be integrally formed. The upper cover 11 is detachably connected to the housing 12. In this way, the upper cover 11 and the housing 12 can be disassembled to open the receiving space 14. The copper sheet 9 can be disassembled from the opening 62, so that the copper sheet 9 and the heat dissipation fins 8 can be taken out from the receiving space 14 for deeper cleaning.

[0045] Furthermore, the upper cover 11 is provided with an air inlet channel 111 and an air outlet channel 112. The upper cover 11 is provided with a first flow channel 113, and the base 13 is provided with a second flow channel 131. The pipe 6 is connected to the first flow channel 113 and the second flow channel 131 through a sealing sheet. The air inlet channel 111 is connected to the air outlet channel 112 through the first flow channel 113, the pipe 6, and the second flow channel 131. The air inlet 2 is connected to the air inlet channel 111, and the air outlet 3 is connected to the air outlet channel 112. The inner diameter of the first flow channel 113 is larger than the inner diameter of the second flow channel 131. Specifically, the phthalic anhydride gas entering from the air inlet 2 flows into the pipe 6 through the first flow channel 113. The gas in the pipe 6 then flows into the air outlet channel 112 through the second flow channel 131, and the gas in the air outlet channel 112 then flows out from the air outlet 3.

[0046] In addition, the pipe 6 is connected to the first flow channel 113 and the second flow channel 131 through a sealing sheet. After the upper cover 11 covers the housing 12, the pipe 6 can be pressed against the first flow channel 113 and the second flow channel 131 through the sealing sheet to prevent gas from flowing out. When the pipe 6 needs to be disassembled, the upper cover 11 is opened, and the pipe 6 can be taken out.

[0047] Furthermore, the base 13 is also provided with a discharge channel 132 connected to the second flow channel 131. The phthalic anhydride and phthalic anhydride liquid brushed in the pipe 6 flow into the discharge channel 132 through the second flow channel 131. After the phthalic anhydride crystals and the liquefied phthalic anhydride gas cooled into water droplets in the pipe 6, they will fall into the discharge channel 132 through the second flow channel 131 after being cleaned by the rotary spiral brush cleaning assembly 7.

[0048] Furthermore, the gas cooler for phthalic anhydride production further includes a control valve 102. The control valve 102 is installed on the base 13 and is connected to the discharge channel 132. By opening the control valve 102, the phthalic anhydride crystals and phthalic anhydride water droplets in the discharge channel 132 are discharged.

[0049] In an embodiment, as Figure 1As shown, the water inlet 4 and the water outlet 5 are both installed on the housing 12, and the height of the water inlet 4 is higher than that of the water outlet 5. In this way, it is ensured that the cooling water will not overflow from the water inlet 4. The height of the water inlet 4 is lower than that of the water outlet 5. In this way, after the water inlet 4 admits water, it flows out from the water outlet 5, and the cooling water can cool better.

[0050] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0051] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited thereby. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A gas cooler for phthalic anhydride production, characterized in that: The gas cooler for phthalic anhydride production comprises a shell component, an air inlet, an air outlet, a water inlet, a water outlet, a pipeline and a rotating spiral brush cleaning component, the shell component is provided with a containing space, the pipeline is installed in the containing space, the air inlet and the air outlet are both installed on the shell component and are respectively connected to the pipeline, the water inlet and the water outlet are both installed on the shell component and are respectively connected to the containing space, the rotating spiral brush cleaning component is installed on the pipeline and is used to clean the pipeline; The gas cooler for phthalic anhydride production also includes a heat sink fin and a copper sheet connected to the heat sink fin. The pipeline is provided with a spiral groove, and the groove wall of the spiral groove is provided with an opening connected to the inside of the pipeline. The copper sheet is spirally inserted into the opening and partially arranged in the pipeline. The rotary spiral brush cleaning assembly includes a coil, a mounting part, a mounting shaft, a magnetic core and a cleaning part. The coil surrounds the pipeline, the mounting part is installed on the pipeline wall, the mounting shaft is connected to the mounting part, and the magnetic core is passed through, and the magnetic core is connected to the cleaning part. The cleaning member comprises a connecting rod, and a first brush head and a second brush head connected to the connecting rod, wherein the first brush head is used to brush away the phthalic anhydride on the copper sheet, and the second brush head is used to brush away the phthalic anhydride on the groove in the pipe and the phthalic anhydride on the inner wall of the pipe; The gas cooler for phthalic anhydride production further comprises a sealing member, which is installed in the groove and used to seal the connection between the opening and the copper sheet; The shell assembly includes an upper cover, a shell and a base, and the upper cover, the shell and the base are arranged to form the accommodating space; The upper cover is detachably connected to the shell; The upper cover is provided with an air inlet channel and an air outlet channel, the upper cover is provided with a first flow channel, the base is provided with a second flow channel, the pipeline is connected with the first flow channel and the second flow channel through a sealing sheet, the air inlet channel is connected with the air outlet channel through the first flow channel, the pipeline, and the second flow channel, the air inlet is connected with the air inlet channel, the air outlet is connected with the air outlet channel, and the inner diameter of the first flow channel is larger than the inner diameter of the second flow channel.

2. The gas cooler for phthalic anhydride production according to claim 1, characterized in that: The base is also provided with a discharge channel connected to the second flow channel, and the phthalic anhydride and phthalic anhydride liquid brushed out of the pipeline flow into the discharge channel through the second flow channel.

3. The gas cooler for phthalic anhydride production according to claim 2, characterized in that: The gas cooler for phthalic anhydride production further comprises a control valve, which is mounted on the base and communicated with the discharge passage.

4. The gas cooler for phthalic anhydride production according to claim 1, characterized in that: The water inlet and the water outlet are both installed on the shell, and the height of the water inlet is higher than the height of the water outlet, or the height of the water inlet is lower than the height of the water outlet.

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