Gas cooling device for phthalic anhydride production

Abstract

The utility model is applicable to the technical field of phthalic anhydride production, and provides a gas cooling device for phthalic anhydride production, which comprises a conveying box, a conveying pipe and a buffer component are mounted on the conveying box, radiating fins are mounted on the conveying pipe, a cooling component is arranged on the conveying pipe and used for cooling phthalic anhydride gas, and the cooling component comprises a cooling pipeline. The cooling pipeline is installed on the conveying pipe, the liquid inlet end and the liquid outlet end of the cooling pipeline are connected with the conveying pump and the cooling box respectively, water cooling of the produced phthalic anhydride gas is achieved through the arrangement of the cooling assembly, temperature control over the produced phthalic anhydride gas is achieved through circulating flowing of fluid, meanwhile, heat dissipation of the produced phthalic anhydride gas can be accelerated through the heat dissipation fins, and the heat dissipation efficiency of the phthalic anhydride gas is improved. And through the arrangement of the air supply assembly, air flowing is accelerated, air is conveyed in two directions, the heat exchanger and the conveying pipe are subjected to air cooling, dissipation of fluid heat after heat absorption is accelerated, and meanwhile the heat dissipation efficiency of the produced phthalic anhydride gas is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of phthalic anhydride production, and particularly relates to a gas cooling device for phthalic anhydride production. Background Art

[0002] Phthalic anhydride is an organic compound with the chemical formula C8H4O3. It is a cyclic anhydride formed by dehydration of phthalic acid molecules. It is a white crystalline powder, insoluble in cold water, slightly soluble in hot water and ether, soluble in ethanol, pyridine, benzene, carbon disulfide, etc. It is an important organic chemical raw material and an important intermediate for the preparation of phthalate plasticizers, coatings, saccharin, dyes and organic compounds. The gas needs to be cooled during the production of phthalic acid.

[0003] The existing patent announcement number CN219736094U discloses a phthalic anhydride gas cooling device, which increases the stability of the shell on the placement surface through a stabilizing mechanism, drives the connecting rod to rotate to be perpendicular to the shell, and drives the adsorption cylinder to contact the placement surface. The fan works to extract the air in the adsorption cylinder through the air inlet pipe, so that the adsorption cylinder is adsorbed on the placement surface, increasing the stability of the shell on the placement surface and solving the problem of poor stability of the shell on the placement surface.

[0004] The existing patent announcement number CN216347906U discloses a naphthalene-based phthalic anhydride pre-condenser device, which forms turbulence in the inner cavity of the main frame, thereby increasing the contact time between the cold air and the finned tubes, thereby enhancing the cooling effect on the phthalic anhydride hot gas, preventing the phthalic anhydride hot gas with too high a temperature from entering the condenser, and facilitating use.

[0005] The above patent uses a heat exchanger and finned tubes to cool the phthalic anhydride gas. The cooling method is single and the heat dissipation effect of the phthalic anhydride gas is not ideal. In addition, the pressure of the phthalic anhydride gas will increase under the influence of high temperature, which easily increases the risk of phthalic anhydride gas leakage. Utility Model Content

[0006] The utility model aims to provide a gas cooling device for phthalic anhydride production, aiming to solve the problems that the above-mentioned patent uses a heat exchanger and a finned tube to cool the phthalic anhydride gas, the cooling method is single, the heat dissipation effect of the phthalic anhydride gas is not ideal, and the pressure of the phthalic anhydride gas will increase under the influence of high temperature, which easily increases the risk of phthalic anhydride gas leakage.

[0007] The utility model is implemented as follows: a gas cooling device for phthalic anhydride production, comprising:

[0008] A conveying box, on which a conveying pipe and a buffer assembly are installed, and on which a heat dissipation fin is fixedly installed;

[0009] A cooling assembly is provided on the conveying pipe and is used to cool the phthalic anhydride gas. The cooling assembly comprises:

[0010] A cooling pipeline is fixedly installed on the delivery pipe, wherein the liquid inlet and liquid outlet of the cooling pipeline are respectively connected to the delivery pump and the cooling box, and a heat exchanger is also fixedly installed on the cooling pipeline;

[0011] The cooling box is fixedly mounted on the delivery box, and the delivery pump and the heat exchanger are both fixedly mounted on the cooling box;

[0012] The air supply assembly is arranged on the conveying box, and the air supply assembly comprises:

[0013] Fixed box, fixedly installed on the conveying box;

[0014] The fan is fixedly installed on the fixed box;

[0015] The gas diverter has an air inlet connected to the fixed box, and two air outlets are respectively connected to the first air duct and the second air duct.

[0016] As a further solution of the utility model, the buffer assembly includes:

[0017] Installation box, fixedly installed on the conveying box;

[0018] A buffer spring is connected to the mounting box and the buffer plate respectively;

[0019] The buffer plate is slidably matched with the installation box;

[0020] A pressurized airbag is arranged in the installation box, and the pressurized airbag is connected with the buffer airbag through an air delivery pipe;

[0021] The gas delivery pipe is fixedly installed on the delivery box.

[0022] As a further solution of the utility model, the pressure inside the pressurized airbag is the same as the pressure inside the buffer airbag, and the buffer airbag is installed on the conveying box through a fixing column.

[0023] As a further solution of the utility model, two groups of heat dissipation fins are arranged along the length direction of the conveying pipe, and each group of heat dissipation fins has a plurality of heat dissipation fins arranged along the circumferential direction of the conveying pipe.

[0024] As a further solution of the utility model, the cooling box, the delivery pump, the cooling pipeline, the heat exchanger and the cooling box constitute a liquid flow loop.

[0025] As a further solution of the utility model, an air inlet filter hole is also provided on the fixed box, and the fixed box, the gas diverter and the first air duct constitute a first air supply path for cooling the heat exchanger, and the fixed box, the gas diverter and the second air duct constitute a second air supply path for cooling the delivery pipe and the heat dissipation fins.

[0026] The utility model provides a gas cooling device for phthalic anhydride production. The phthalic anhydride gas produced is water-cooled by setting a cooling component. The temperature of the phthalic anhydride gas produced is controlled by circulating the fluid. Meanwhile, the heat dissipation fins can also accelerate the heat dissipation of the phthalic anhydride gas produced. The air supply component is set to accelerate the flow of air, so that the air is transported in two directions to respectively cool the heat exchanger and the transport pipe, accelerate the heat dissipation of the fluid after heat absorption, and further improve the heat dissipation efficiency of the phthalic anhydride gas produced. The buffer component is set to buffer the phthalic anhydride gas produced, reduce the probability of leakage of the phthalic anhydride gas produced due to excessive pressure, and improve the efficiency of phthalic anhydride gas production. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional schematic diagram of a gas cooling device for phthalic anhydride production provided by an embodiment of the utility model;

[0028] Figure 2 A partial structural diagram of a cooling component of a gas cooling device for phthalic anhydride production provided by an embodiment of the utility model;

[0029] Figure 3 This is a diagram of the internal structure of a gas cooling device for phthalic anhydride production provided in an embodiment of the utility model.

[0030] In the attached drawings: 1. delivery box; 2. delivery pipe; 3. cooling assembly; 31. cooling pipeline; 32. cooling box; 33. delivery pump; 34. heat exchanger; 4. cooling fins; 5. air supply assembly; 51. fixing box; 52. fan; 53. gas diverter; 54. first air duct; 55. second air duct; 6. buffer assembly; 61. installation box; 62. buffer spring; 63. buffer plate; 64. pressurized airbag; 65. air delivery pipe; 66. buffer airbag. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0032] It can be understood that the terms "first" and "second" used in the present application can be used in this article to describe various elements, but unless otherwise specified, these elements are not limited by these terms. These terms are only used to distinguish the first element from another element.

[0033] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0034] like Figures 1 to 3 As shown, a gas cooling device for phthalic anhydride production provided by an embodiment of the utility model comprises:

[0035] A conveying box 1, on which a conveying pipe 2 and a buffer assembly 6 are installed, and on which a heat dissipation fin 4 is fixedly installed;

[0036] The cooling assembly 3 is arranged on the conveying pipe 2 and is used to cool the phthalic anhydride gas. The cooling assembly 3 includes:

[0037] The cooling pipeline 31 is fixedly installed on the delivery pipe 2. The liquid inlet and liquid outlet of the delivery cooling pipeline 31 are respectively connected to the delivery pump 33 and the cooling box 32. A heat exchanger 34 is also fixedly installed on the cooling pipeline 31.

[0038] The cooling box 32 is fixedly mounted on the delivery box 1, and the delivery pump 33 and the heat exchanger 34 are both fixedly mounted on the cooling box 32;

[0039] The air supply assembly 5 is arranged on the conveying box 1, and the air supply assembly 5 includes:

[0040] The fixed box 51 is fixedly mounted on the conveying box 1;

[0041] The fan 52 is fixedly mounted on the fixed box 51;

[0042] The gas diverter 53 has an air inlet connected to the fixed box 51 and two air outlets connected to a first air duct 54 and a second air duct 55 respectively.

[0043] In the embodiment of the utility model, in actual application, the produced phthalic anhydride gas is transported through the transport box 1 and the transport pipe 2, and the transport pump 33 circulates the fluid inside the cooling box 32 through the cooling pipeline 31, so that the fluid cools the phthalic anhydride gas in the transport pipe 2 through the cooling pipeline 31, and the heat dissipation fins 4 also conduct heat to the transport pipe 2 to accelerate the heat dissipation of the phthalic anhydride gas. The fluid that absorbs heat is heat exchanged by the heat exchanger 34, so that it is cooled and flows back into the cooling box 32. When the phthalic anhydride gas is cooled, the fan 52 is started synchronously to transport air to two directions through the gas diverter 53. The air in the first direction is blown onto the heat exchanger 34 through the first air duct 54, which accelerates the heat conduction of the fluid in the heat exchanger 34 and improves the efficiency of the heat dissipation of the fluid. The air in the second direction is blown onto the transport pipe 2 through the second air duct 55, so that the phthalic anhydride gas in the transport pipe 2 can be cooled by water and air at the same time.

[0044] By setting the cooling component 3, the gas produced by phthalic anhydride can be water-cooled, and the temperature of the gas produced by phthalic anhydride can be controlled by the circulation of the fluid. At the same time, the heat dissipation fins 4 can also accelerate the heat dissipation of the phthalic anhydride gas. The air supply component 5 is set to accelerate the flow of air and transport the air in two directions to cool the heat exchanger 34 and the conveying pipe 2 respectively, thereby accelerating the heat dissipation of the fluid after heat absorption, and further improving the heat dissipation efficiency of the phthalic anhydride gas.

[0045] like Figure 3 As shown, as a further embodiment of the present invention, the buffer assembly 6 includes:

[0046] The installation box 61 is fixedly installed on the conveying box 1;

[0047] The buffer spring 62 is connected to the mounting box 61 and the buffer plate 63 respectively;

[0048] The buffer plate 63 is slidably matched with the installation box 61;

[0049] The pressurized airbag 64 is arranged in the installation box 61, and the pressurized airbag 64 is connected with the buffer airbag 66 through the air delivery pipe 65;

[0050] The gas delivery pipe 65 is fixedly mounted on the delivery box 1;

[0051] Specifically, as a further embodiment of the present invention, the pressure inside the pressurized airbag 64 is the same as the pressure inside the buffer airbag 66, and the buffer airbag 66 is mounted on the conveying box 1 through a fixing column;

[0052] In the embodiment of the utility model, in actual application, when the phthalic anhydride gas is produced and transported, it first contacts with the buffer airbag 66. When the pressure of the phthalic anhydride gas is too high, the buffer airbag 66 will be squeezed, so that the air inside the buffer airbag 66 is discharged to the pressurized airbag 64 through the gas pipe 65. Since the pressurized airbag 64 is affected by the thrust of the buffer spring 62 and the buffer plate 63, the expansion range of the pressurized airbag 64 is limited, and the air is discharged into the buffer airbag 66 again. The reciprocating flow of air can effectively buffer the pressure of the phthalic anhydride gas and reduce the risk of phthalic anhydride gas leakage.

[0053] like Figure 2 As shown, as a further embodiment of the present utility model, two groups of heat dissipating fins 4 are arranged along the length direction of the delivery pipe 2, and each group of heat dissipating fins 4 is arranged along the circumferential direction of the delivery pipe 2.

[0054] In the embodiment of the utility model, in actual application, the heat dissipation fins 4 accelerate the speed of heat conduction of the phthalic anhydride gas and improve the efficiency of heat dissipation of the phthalic anhydride gas.

[0055] like Figure 2 As shown, as a further embodiment of the present utility model, the cooling box 32, the delivery pump 33, the cooling pipeline 31, the heat exchanger 34 and the cooling box 32 constitute a liquid flow loop;

[0056] In the embodiment of the utility model, in actual application, the phthalic anhydride gas is cooled and lowered in temperature through the circulation flow of the fluid.

[0057] like Figure 2 As shown, as a further embodiment of the utility model, the fixed box 51 is further provided with an air inlet filter hole, the fixed box 51, the gas diverter 53 and the first air duct 54 constitute a first air supply path for cooling the heat exchanger 34, and the fixed box 51, the gas diverter 53 and the second air duct 55 constitute a second air supply path for cooling the delivery pipe 2 and the heat dissipation fins 4;

[0058] In the embodiment of the utility model, in actual application, the phthalic anhydride gas can be water-cooled and air-cooled at the same time, which further improves the heat dissipation effect of the phthalic anhydride gas and accelerates the heat exchange effect between the fluid and the air after absorbing heat.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas cooling device for phthalic anhydride production, characterized in that: include: A conveying box (1), wherein a conveying pipe (2) and a buffer assembly (6) are mounted on the conveying box (1), and a heat dissipation fin (4) is fixedly mounted on the conveying pipe (2); A cooling component (3) is arranged on the conveying pipe (2) and is used to cool the phthalic anhydride gas. The cooling component (3) comprises: A cooling pipeline (31) is fixedly mounted on the delivery pipe (2); a liquid inlet end and a liquid outlet end of the cooling pipeline (31) are respectively connected to a delivery pump (33) and a cooling box (32); and a heat exchanger (34) is also fixedly mounted on the cooling pipeline (31); The cooling box (32) is fixedly mounted on the delivery box (1), and the delivery pump (33) and the heat exchanger (34) are both fixedly mounted on the cooling box (32); The air supply assembly (5) is arranged on the conveying box (1), and the air supply assembly (5) comprises: A fixed box (51) fixedly mounted on the conveying box (1); A fan (52) is fixedly mounted on the fixed box (51); The gas flow divider (53) has an air inlet connected to the fixed box (51), and two air outlets respectively connected to the first air duct (54) and the second air duct (55).

2. The gas cooling device for phthalic anhydride production according to claim 1, characterized in that: The buffer component (6) comprises: An installation box (61) fixedly mounted on the conveying box (1); A buffer spring (62) is connected to the mounting box (61) and the buffer plate (63) respectively; The buffer plate (63) is slidably matched with the installation box (61); A pressurized airbag (64) is arranged in the installation box (61), and the pressurized airbag (64) is connected to the buffer airbag (66) through an air delivery pipe (65); The gas delivery pipe (65) is fixedly mounted on the delivery box (1).

3. A gas cooling device for phthalic anhydride production according to claim 2, characterized in that: The pressure inside the pressurized airbag (64) is the same as the pressure inside the buffer airbag (66), and the buffer airbag (66) is mounted on the conveying box (1) via a fixing column.

4. The gas cooling device for phthalic anhydride production according to claim 1, characterized in that: Two groups of the heat dissipation fins (4) are arranged along the length direction of the delivery pipe (2), and each group of the heat dissipation fins (4) includes a plurality of heat dissipation fins (4) arranged along the circumferential direction of the delivery pipe (2).

5. The gas cooling device for phthalic anhydride production according to claim 1, characterized in that: The cooling box (32), the delivery pump (33), the cooling pipeline (31), the heat exchanger (34) and the cooling box (32) form a liquid flow loop.

6. The gas cooling device for phthalic anhydride production according to claim 1, characterized in that: The fixed box (51) is also provided with an air inlet filter hole. The fixed box (51), the gas diverter (53) and the first air duct (54) constitute a first air supply path for cooling the heat exchanger (34). The fixed box (51), the gas diverter (53) and the second air duct (55) constitute a second air supply path for cooling the delivery pipe (2) and the heat dissipation fins (4).

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