Cooling device used after phthalic anhydride pretreatment

Abstract

The utility model discloses a cooling device used after phthalic anhydride pretreatment, and relates to the technical field of phthalic anhydride. The cooling device used after phthalic anhydride pretreatment comprises a condensation shell, the left side of the condensation shell is connected with a first air entraining part, the right side of the condensation shell is connected with a second air entraining part, the outer surface of the condensation shell is sleeved with an outer storage part, and a heating part is annularly wound on the inner surface of the outer storage part; through an outer storage part, a heating part, an air entraining three-way part, an air injection part, a main air transmission three-way part, an air guide part, an auxiliary air transmission three-way part, a hydrophobic three-way part and a backflow part, the problems that an existing cooling device does not have a self-cleaning function, and when phthalic anhydride raw materials enter the cooling device during processing, part of phthalic anhydride is prone to being attached to pipelines or fins of a cooler, and the cooling effect is poor are solved. The problem that the labor intensity of a worker is greatly increased due to the fact that the worker needs to use external equipment to clean the device subsequently and the cleaning is tedious is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of phthalic anhydride treatment, and particularly relates to a cooling device after pretreatment of phthalic anhydride. Background Technique

[0002] Phthalic anhydride, also known as phthalic anhydride, is a white scaly solid or powder, or white needle-like crystals, with a slight odor, specific gravity of 1.527, melting point of 130.8 °C, boiling point of 284.5 °C, easy to sublimate, slightly soluble in cold water, easily soluble in hot water and hydrolyzed into phthalic acid, soluble in ethanol, benzene and pyridine, and slightly soluble in ether.

[0003] It is mainly used as an analytical reagent and also for organic synthesis; it is one of the important organic chemical raw materials, used in the production of plasticizers, alkyd resins, unsaturated polyester resins, dyes and pigments, pharmaceuticals and pesticides, etc.; phthalic anhydride, abbreviated as phthalic anhydride, is an intermediate for the fungicide captan, the insecticide phosmet, and the herbicide bentazone; phthalic anhydride is one of the most important organic chemical raw materials; standard solution for calibrating alkali, separating primary alcohols from secondary and tertiary alcohols; differentiating primary amines and aromatic hydrocarbons according to the melting points of the formed derivatives, and removing thiophene from benzene.

[0004] In the process of preparing and pretreating phthalic anhydride, a cooling device is often used to quickly cool it. Although the current cooling device can efficiently cool phthalic anhydride, there are still some problems. For example, the existing cooling device does not have a self-cleaning function. When processing phthalic anhydride raw materials, when it enters the cooling device, it is easy to cause some phthalic anhydride to adhere to the pipes or fins of the cooler, resulting in subsequent need for personnel to use external equipment to clean it, and the cleaning is relatively cumbersome, greatly increasing the labor intensity of the staff. Content of the Utility Model

[0005] The purpose of the utility model is to provide a cooling device after pretreatment of phthalic anhydride to solve the technical problems raised in the background technique.

[0006] To achieve the above purpose, the specific technical solution of the utility model is as follows: A cooling device after pretreatment of phthalic anhydride includes a condensation housing, a first air inlet member is connected to the left side of the condensation housing, a second air inlet member is connected to the right side of the condensation housing, an external storage member is sleeved on the outer surface of the condensation housing, a heating member is wound annularly on the inner surface of the external storage member, an air inlet three-way member is penetrated through the left side at the top of the external storage member, a main air supply three-way member is penetrated through the right side at the top of the second air inlet member, an auxiliary air supply three-way member is penetrated through the bottom of the first air inlet member, and a drain three-way member is penetrated through the right side at the bottom of the external storage member.

[0007] Preferably, a condensation member is installed in the inner cavity of the condensation housing, and a water inlet member is communicated with the top of the external storage member.

[0008] Preferably, a stability - enhancing ring body is arranged on the inner surface of the external storage part, and hydrophobic through - grooves are formed on the surface of the stability - enhancing ring body.

[0009] Preferably, a connecting pipe part is communicated with the front side of the top of the air - introducing three - way part; an air - injecting part is communicated with the rear side of the top of the air - introducing three - way part.

[0010] Preferably, a first flow - dividing part is communicated with the left side of the main air - transporting three - way part, a gas - guiding part is communicated with the right side of the main air - transporting three - way part, and a second flow - dividing part is communicated with the surface of the first flow - dividing part.

[0011] Preferably, one end of the bottom of the hydrophobic three - way part is communicated with a reflux part, and the end of the reflux part far away from the hydrophobic three - way part is communicated with the top of the inner cavity of the external storage part.

[0012] A cooling device for phthalic anhydride after pretreatment of the present utility model has the following advantages:

[0013] 1. For this cooling device for phthalic anhydride after pretreatment, by arranging the connecting pipe part, the raw materials after pre - processing of phthalic anhydride can be injected into the condensation shell through the air - introducing three - way part. By arranging the stability - enhancing ring body and the hydrophobic through - grooves, the strength of the external storage part can be increased, so that the external storage part is not easily deformed due to stress. By arranging the heating part, the water in the external storage part can be heated up, so as to generate steam for subsequent injection into the condensation part to clean the inner wall of the condensation part. By combining the use of the hydrophobic three - way part and the reflux part, after the pure steam cleans the inner wall of the condensation part, it can flow back into the external storage part for subsequent circular use.

[0014] 2. For this cooling device for phthalic anhydride after pretreatment, through the external storage part, the heating part, the air - introducing three - way part, the air - injecting part, the main air - transporting three - way part, the gas - guiding part, the auxiliary air - transporting three - way part, the hydrophobic three - way part and the reflux part, it solves the problem that the existing cooling device does not have the function of self - cleaning. When processing phthalic anhydride raw materials, when they enter the cooling device, part of the phthalic anhydride is likely to adhere to the pipes or fins of the cooler, resulting in the need for subsequent personnel to use external equipment to clean it, and the cleaning is rather cumbersome, greatly increasing the labor intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a three - dimensional exploded view of the overall structure of the present utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the external storage component structure of the present utility model;

[0018] Figure 3 This is a three-dimensional schematic view of the overall structure of the present utility model;

[0019] Figure 4 This is a three-dimensional exploded view of the rear view structure of the external storage component of the present utility model.

[0020] Explanation of the markings in the figure: 10, condensation housing; 11, condensation component; 20, first air guiding component; 30, second air guiding component; 40, external storage component; 401, water inlet pipe component; 41, heating component; 42, stability enhancing ring body; 421, hydrophobic through groove; 50, air guiding three-way component; 501, connecting pipe component; 502, air injection component; 60, main air transmission three-way component; 601, first shunt component; 602, air guiding component; 603, second shunt component; 70, auxiliary air transmission three-way component; 80, hydrophobic three-way component; 81, reflux component. Detailed implementation manners

[0021] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present utility model. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0022] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "length", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present utility model 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 therefore should not be construed as a limitation to the embodiments of the present utility model.

[0023] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0024] In the embodiments of the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific situations.

[0025] The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of the present utility model. To simplify the disclosure of the embodiments of the present utility model, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between various embodiments and / or settings discussed.

[0026] In order to better understand the purpose, structure and function of the present utility model, the following further describes in detail a cooling device for phthalic anhydride after pretreatment of the present utility model with reference to the drawings.

[0027] As Figures 1-4 shown, a cooling device for phthalic anhydride after pretreatment of the present utility model includes a condensation housing 10. A first air inlet member 20 is connected to the left side of the condensation housing 10, and a second air inlet member 30 is connected to the right side of the condensation housing 10. An outer storage member 40 is sleeved on the outer surface of the condensation housing 10. A heating member 41 is wound annularly on the inner surface of the outer storage member 40. An air inlet three-way member 50 is penetrated through the left side of the top of the outer storage member 40. A main air delivery three-way member 60 is penetrated through the right side of the top of the second air inlet member 30. An auxiliary air delivery three-way member 70 is penetrated through the bottom of the first air inlet member 20. A drain three-way member 80 is penetrated through the right side of the bottom of the outer storage member 40;

[0028] Furthermore, a condensation member 11 is installed in the inner cavity of the condensation housing 10. A water inlet pipe member 401 is communicated with the top of the outer storage member 40. By providing the water inlet pipe member 401, an appropriate amount of water can be injected into the outer storage member 40;

[0029] Exemplarily, the opposite sides of the first air inlet member 20 and the second air inlet member 30 are communicated with both sides of the condensation housing 10;

[0030] Exemplarily, the bottom of the air inlet three-way member 50 penetrates through the outer storage member 40 and is communicated with the top of the inner cavity of the condensation housing 10. The side of the main air delivery three-way member 60 opposite to the second air inlet member 30 is communicated;

[0031] Exemplarily, one side of the auxiliary gas transmission tee 70 opposite to the first air extraction member 20 is interconnected, and the top of the hydrophobic tee 80 penetrates through the outer storage member 40 and communicates with the bottom of the inner cavity of the condensation housing 10;

[0032] Exemplarily, the outer storage member 40 is connected to an external water pipe;

[0033] Exemplarily, in order to detect the temperature of the water in the outer storage member 40, a temperature sensor is installed at the bottom of the inner cavity of the outer storage member 40;

[0034] Exemplarily, in order to detect the liquid level of the water in the outer storage member 40, a liquid level sensor is inlaid and installed at the top of the inner cavity of the outer storage member 40;

[0035] Further, a stability-increasing ring body 42 is provided on the inner surface of the outer storage member 40, and a hydrophobic through groove 421 is formed on the surface of the stability-increasing ring body 42;

[0036] Exemplarily, in order to increase the strength of the outer storage member 40, the outer surface of the stability-increasing ring body 42 is fixedly connected to the inner surface of the outer storage member 40;

[0037] Further, a connecting pipe member 501 is communicated with the front side of the top of the air extraction tee 50; an air injection member 502 is communicated with the rear side of the top of the air extraction tee 50;

[0038] Exemplarily, the connecting pipe member 501 can convey the phthalic anhydride preparation gas material;

[0039] Exemplarily, the bottom of the air injection member 502 is communicated with the top of the outer storage member 40;

[0040] Further, a first flow dividing member 601 is communicated with the left side of the main gas transmission tee 60, a gas guiding member 602 is communicated with the right side of the main gas transmission tee 60, and a second flow dividing member 603 is communicated with the surface of the first flow dividing member 601;

[0041] Exemplarily, one ends of the first flow dividing member 601 and the gas guiding member 602 far from the main gas transmission tee 60 are respectively communicated with the front and rear ends of the top of the auxiliary gas transmission tee 70;

[0042] Further, one end of the bottom of the hydrophobic tee 80 is communicated with a reflux member 81, and one end of the reflux member 81 far from the hydrophobic tee 80 is communicated with the top of the inner cavity of the outer storage member 40;

[0043] Exemplarily, solenoid valves are installed on the surfaces of the air extraction tee 50, the main gas transmission tee 60, the auxiliary gas transmission tee 70, the hydrophobic tee 80, the first flow dividing member 601, and the second flow dividing member 603.

[0044] Working principle of the cooling device after phthalic anhydride pretreatment: When it is necessary to cool phthalic anhydride after pretreatment, at this time, the phthalic anhydride gas-phase substance is injected into the condensation housing 10 through the connecting pipe fitting 501, cooled by the condensation member 11, and finally condensed into a liquid phase, which is discharged through the hydrophobic three-way fitting 80. At the same time, part of the uncondensed gas-phase substance flows into the second air guiding member 30, and returns to the condensation member 11 through the main gas transmission three-way fitting 60, the first shunt member 601 and the first air guiding member 20 for re-cooling until a liquid phase is formed and discharged through the hydrophobic three-way fitting 80. When the condensation member 11 condenses the phthalic anhydride gas-phase substance, part of the gas-phase substance directly adheres to the inner wall of the condensation member 11 and is difficult to clean. At this time, when the staff cleans it, the user only needs to heat the water in the external storage member 40 through the heating member 41 to vaporize it. The vaporized steam flows into the external storage member 40 through the air injection member 502 for condensation work. During condensation, part of the steam will also adhere to the inner wall of the condensation member 11 to wash the phthalic anhydride gas-phase substance on the inner wall of the condensation member 11. And part of the unvaporized steam returns to the condensation member 11 through the main gas transmission three-way fitting 60, the air guiding member 602 and the first air guiding member 20 for re-condensation, so as to form a liquid to wash the inner wall of the condensation member 11, and finally wash away the phthalic anhydride adhering to the inner wall of the condensation member 11. The water body formed after condensation in the condensation member 11 finally returns to the external storage member 40 through the hydrophobic three-way fitting 80 and the return member 81 for subsequent recycling.

[0045] It can be understood that the present utility model is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. In addition, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A cooling device after phthalic anhydride pretreatment, characterized in that, Including: a condensation housing (10), a first air extraction member (20) is connected to the left side of the condensation housing (10), a second air extraction member (30) is connected to the right side of the condensation housing (10), an external storage member (40) is sleeved on the outer surface of the condensation housing (10), a heating member (41) is wound annularly on the inner surface of the external storage member (40), an air extraction three-way member (50) is disposed through the left side at the top of the external storage member (40), a main air transmission three-way member (60) is disposed through the right side at the top of the second air extraction member (30), an auxiliary air transmission three-way member (70) is disposed through the bottom of the first air extraction member (20), and a hydrophobic three-way member (80) is disposed through the right side at the bottom of the external storage member (40).

2. The cooling device for pretreated phthalic anhydride according to claim 1, wherein: A condensation member (11) is installed in the inner cavity of the condensation housing (10), and a water inlet pipe member (401) is communicated with the top of the external storage member (40).

3. A cooling device for pretreated phthalic anhydride according to claim 1, characterized in that: A stability increasing ring body (42) is disposed on the inner surface of the external storage member (40), and hydrophobic through grooves (421) are formed on the surface of the stability increasing ring body (42).

4. A cooling device for pretreated phthalic anhydride according to claim 1, characterized in that: A connecting pipe member (501) is communicated with the front side at the top of the air extraction three-way member (50); an air injection member (502) is communicated with the rear side at the top of the air extraction three-way member (50).

5. A cooling device for pretreated phthalic anhydride according to claim 1, characterized in that: A first flow dividing member (601) is communicated with the left side of the main air transmission three-way member (60), a gas guiding member (602) is communicated with the right side of the main air transmission three-way member (60), and a second flow dividing member (603) is communicated with the surface of the first flow dividing member (601).

6. The cooling device after phthalic anhydride pretreatment according to claim 1, wherein: One end at the bottom of the hydrophobic three-way member (80) is communicated with a reflux member (81), and one end of the reflux member (81) away from the hydrophobic three-way member (80) is communicated with the top of the inner cavity of the external storage member (40).

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