CN216222989U - Distillation alkyl anthracene condensation preventing equipment and distillation device thereof - Google Patents

Abstract

The utility model belongs to the technical field of alkyl anthracene production equipment, and particularly relates to alkyl anthracene condensation preventing equipment and a distillation device thereof. The alkyl anthracene condensation preventing equipment comprises a tank body and a vertical baffle. The internal fluid separation chamber that is equipped with of jar, vertical baffle set up in the fluid separation intracavity in order to be used for separating the fluid. The tank wall of the tank body is provided with a fluid inlet pipe section extending from the circumferential side of the fluid separation chamber, a fluid outlet pipe section extending from the top of the fluid separation chamber, and a discharge port pipe section extending from the lowest point of the fluid separation chamber. On the pipeline that is equipped with this distillation alkyl anthracene condensation prevention equipment, can greatly reduce because of the risk of anthracene condensation jam pipeline, realize the high-efficient separation of anthracene alkylation product.

Description

Distillation alkyl anthracene condensation preventing equipment and distillation device thereof

Technical Field

The utility model belongs to the technical field of alkyl anthracene production equipment, and particularly relates to distillation alkyl anthracene condensation prevention equipment and a distillation device thereof.

Background

Hydrogen peroxide is an important green basic chemical, the industrial application field is very wide, China has continuously become the first major country for hydrogen peroxide production for many years, and the capacity is about 1900 ten thousand t/(calculated by 27.5%) in 2020. At present, the technology for producing hydrogen peroxide at home and abroad is mainly an anthraquinone method. The 2-alkyl anthraquinone in the process is used as a 'carrier' of the process, and the quality and the yield of the hydrogen peroxide are directly influenced.

The process route for preparing the 2-alkylanthraquinone by oxidizing the 2-alkylanthraquinone is regarded as a green production process technology due to the advantages of simple process flow, wide raw material source, small environmental pollution and the like, and has wide application prospect. The key raw material 2-alkyl anthracene can be prepared by an anthracene alkylation reaction technology, anthracene and an alkylation reagent can be subjected to alkylation reaction under the action of acid catalysis, and a target product 2-alkyl anthracene can be obtained after a reaction product system is treated by a special separation technology. And a specific oxidation technology is adopted, so that the aim of efficiently preparing the 2-alkylanthraquinone from the 2-alkylanthraquinone can be fulfilled.

As can be seen from deep analysis of an anthracene alkylation reaction system, the raw material anthracene and the product alkyl anthracene are polycyclic aromatic hydrocarbons with high boiling points and high melting points, are limited by catalytic activity and selectivity, and most of anthracene alkylation products are mixtures, so in order to obtain 2-alkyl anthracene, an efficient separation technology of an anthracene-multiple alkyl anthracene mixture system needs to be developed, and an intermediate raw material is provided for preparing the 2-alkyl anthraquinone.

According to the difference of the boiling points of the components of the alkylation product, the anthracene alkylation mixture can be separated by reduced pressure distillation, and the difficulty exists that the melting point of anthracene reaches 215 ℃, once the pipeline is insulated, the blockage phenomenon is easy to occur, and the continuous and stable operation of the process is seriously influenced. In addition, anthracene is very easily sublimed, and sublimation temperature is difficult to control, and the chance that the pipeline takes place to block up is showing to increase. If the problem of pipeline blockage can be solved, reduced pressure distillation still is the separation method with the most industrial application prospect.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects or shortcomings in the prior art, the utility model provides distillation alkyl anthracene condensation preventing equipment and a distillation device thereof, which can greatly reduce the risk of pipeline blockage caused by anthracene condensation on a pipeline provided with the distillation alkyl anthracene condensation preventing equipment, and realize the efficient separation of an anthracene alkylation product.

In order to achieve the above object, the present invention provides a distilled alkyl anthracene condensation preventing apparatus, including:

a tank body, which is internally provided with a fluid separation cavity; and

the vertical baffle is arranged in the fluid separation cavity and used for separating fluid;

wherein, the tank wall of the tank body is provided with a fluid inlet pipe section extending from the circumferential side of the fluid separation chamber, a fluid outlet pipe section extending from the top of the fluid separation chamber and a discharge port pipe section extending from the lowest point of the fluid separation chamber.

Optionally, the distillation alkyl anthracene condensation preventing device comprises a plurality of vertical baffles, and the plurality of vertical baffles are sequentially connected to the two vertical ends of the tank body at intervals in an alternating manner and form a circuitous extending fluid channel.

Optionally, the fluid outlet tube segment is located at an end of the fluid channel.

Optionally, the tank body includes a cylindrical section and a necking section arranged vertically, the caliber of the necking section decreases progressively from top to bottom, and the discharge opening pipe section is located at the lowest point of the necking section.

Optionally, the constriction section is hemispherical or conical.

Optionally, the height of the cylinder section is 100mm to 500mm and the diameter of the cylinder section is 50mm to 300 mm.

Optionally, the fluid inlet pipe section is located at the bottom of the circumferential wall of the cylindrical section.

Optionally, the number of the vertical baffles is 1-10.

In a second aspect, the present invention provides a distillation apparatus for separating an anthracene alkylation product, the distillation apparatus including the above-described distillation alkyl anthracene condensation preventing device.

Optionally, the distillation apparatus further comprises a first distillation column, a second distillation column, a product tank and a condenser, the product tank comprises an alkyl anthracene tank arranged on a pipeline between the first distillation column and the second distillation column, a monoalkyl anthracene tank connected with the top of the second distillation column through the condenser, and a polyalkyl anthracene tank connected with the bottom of the second distillation column, and the distilled alkyl anthracene condensation preventing device comprises a first distilled alkyl anthracene condensation preventing device connected with the alkyl anthracene tank, a second distilled alkyl anthracene condensation preventing device connected with the monoalkyl anthracene tank, a third distilled alkyl anthracene condensation preventing device connected with the polyalkylanthracene tank, and a fourth distilled alkyl anthracene condensation preventing device connected with the condenser.

The distillation alkyl anthracene condensation preventing device can be arranged on a pipeline of a distillation device for separating anthracene alkylation products, mixture fluid enters a fluid separation cavity from a fluid inlet pipe section, the mixture fluid comprises anthracene and a plurality of alkyl anthracene, and the boiling points of the alkyl anthracene and the anthracene are different. The lower boiling point anthracene in the mixture stream is condensed as it passes through the vertical baffle and flows to the lowest point of the fluid separation chamber for discharge from the discharge outlet pipe section. The mixture fluid separated by the vertical baffle plate enters the next processing link through a fluid outlet pipe section positioned at the top of the fluid separation cavity. So, on being equipped with this distillation alkyl anthracene condensation prevention equipment's pipeline, can greatly reduce because of the risk of anthracene condensation jam pipeline, realize the high-efficient separation of anthracene alkylation product.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic diagram of the structure of a distilled alkyl anthracene condensation prevention apparatus according to an embodiment of the present invention;

fig. 2 is a schematic diagram of the structure of a distillation apparatus for separating an anthracene alkylation product according to an embodiment of the present invention.

Description of reference numerals: 10. a tank body; 11. a fluid separation chamber; 12. a fluid inlet pipe section; 13. a fluid outlet pipe section; 14. a discharge outlet pipe section; 15. a cylinder section; 16. a necking section; 20. a vertical baffle; 30. a first distillation column; 40. a second distillation column; 50. a product tank; 51. an alkyl anthracene tank; 52. a monoalkyl anthracene tank; 53. a polyalkyl anthracene tank; 60. a condenser; 70. distilling the solvent tank; 80. a raw material tank; 111. fluid channel

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the utility model, are given by way of illustration and explanation only, not limitation.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In embodiments of the utility model, where the context requires otherwise, the use of directional terms such as "upper, lower, top and bottom" is generally intended in the orientation shown in the drawings or the positional relationship of the various components in a vertical, vertical or gravitational orientation.

The utility model will be described in detail below with reference to exemplary embodiments and with reference to the accompanying drawings.

In an exemplary embodiment of the present invention, a distilled alkyl anthracene condensation preventing apparatus is provided, which includes a tank 10 and a vertical baffle 20. A fluid separation chamber 11 is arranged in the tank body 10, and a vertical baffle 20 is arranged in the fluid separation chamber 11 for separating fluid. The tank wall of the tank 10 is provided with a fluid inlet pipe section 12 extending from the circumferential side of the fluid separation chamber 11, a fluid outlet pipe section 13 extending from the top of the fluid separation chamber 11 and a discharge pipe section 14 extending from the lowest point of the fluid separation chamber 11.

Specifically, the distilled alkyl anthracene condensation preventing apparatus can be disposed on a line of a distillation apparatus for separating an anthracene alkylation product. The mixture fluid enters the fluid separation chamber 11 from the fluid inlet pipe section 12, and the mixture fluid comprises anthracene and a plurality of alkyl anthracene, and the boiling points of the alkyl anthracene and the anthracene are different. The lower boiling anthracene in the mixture stream is condensed as it passes through the vertical baffle 20 and flows to the lowest point of the fluid separation chamber 11 for discharge from the discharge port tube section 14. The mixture flow separated by the vertical baffle 20 enters the next process stage through the flow outlet pipe section 13 located at the top of the flow separation chamber 11. So, on being equipped with this distillation alkyl anthracene condensation prevention equipment's pipeline, can greatly reduce because of the risk of anthracene condensation jam pipeline, realize the high-efficient separation of anthracene alkylation product.

In the embodiment, the number of the vertical baffles 20 is 1 to 10, and preferably, the number of the vertical baffles 20 is 2 to 5. Because the temperature of the mixture fluid is high and the mixture fluid has certain corrosiveness, the material selection of the tank body 10 and the vertical baffle 20 should follow the principles of heat resistance, organic corrosion resistance and the like. In this embodiment, the vertical baffle 20 is made of any one of stainless acid-proof steel, organic glass and polyester resin. In the case where the vertical baffle 20 is stainless acid-resistant steel, preferably, the stainless acid-resistant steel may be any one of ferritic stainless steel, austenitic-ferritic duplex stainless steel, precipitation-hardened stainless steel, and martensitic stainless steel. Of course, the can body 10 is preferably made of a stainless acid-resistant steel material.

Further, the distillation alkyl anthracene condensation preventing device comprises a plurality of vertical baffles 20, wherein the vertical baffles 20 are sequentially and alternately connected to the two vertical ends of the tank body 10 at intervals and form a circuitous extending fluid channel 111.

Specifically, after the mixture fluid passes through the circuitous extending fluid channel 111, anthracene in the mixture fluid can be better condensed and separated. As shown in fig. 1, the distilled alkyl anthracene condensation preventing apparatus of the illustrated embodiment includes 2 vertical baffles 20, wherein the 2 vertical baffles 20 are respectively connected to the two vertical ends of the tank 10, and the 2 vertical baffles are arranged in parallel at intervals to form a circuitously extending fluid channel 111.

Further, a fluid outlet tube section 13 is located at the end of the fluid channel 111.

Specifically, anthracene in the mixture fluid is condensed and separated after passing through the circuitous extending fluid channel 111, and preferably, the fluid outlet pipe section 13 is arranged at the end of the fluid channel 111, so that the mixture fluid flows through the whole fluid channel 111, and the separation rate of anthracene alkylation products is ensured. As shown in FIG. 1, in the illustrated embodiment, the fluid outlet pipe section 13 is located at the top of the tank 10, also at the end of the fluid passageway 111.

In the embodiment of the present invention, the can body 10 comprises a vertically arranged cylindrical section 15 and a necking section 16, wherein the caliber of the necking section 16 is gradually reduced from top to bottom, and the discharge opening section 14 is positioned at the lowest point of the necking section 16.

Specifically, the tank 10 is formed by vertically assembling a cylindrical section 15 and a necking section 16, and the necking section 16 has a large upper opening and a small lower opening. In this way, the condensed anthracene can be collected to the lowest point of the throat section 16 and discharged from the discharge outlet section 14 for discharge. In the present embodiment, the reducing section 16 has a hemispherical or conical shape, and the diameter of the opening at the upper end of the reducing section 16 is the same as the diameter of the cylindrical section 15. Of course, in order to ensure the separation ratio of the anthracene alkylation product, the size of the tank 10 should be appropriate, and in this embodiment, the height of the cylindrical section 15 is 100mm to 500mm, and the diameter of the cylindrical section 15 is 50mm to 300 mm. Preferably, the height of the cylindrical section 15 is between 150mm and 300mm and the radius of the cylindrical section 15 is between 100mm and 200 mm.

Further, the fluid inlet pipe section 12 is located at the bottom of the circumferential wall of the cylindrical section 15. In this manner, the fluid inlet section 12 is spaced from both the fluid outlet section 13 and the discharge section 14 to prevent the mixture fluid entering from the fluid inlet section 12 from directly entering the fluid outlet section 13 or the discharge section 14. As shown in fig. 1, in the illustrated embodiment, the fluid inlet pipe section 12 is located at the bottom of the peripheral wall of the cylindrical section 15 and is disposed obliquely upward, in other words, the mixture fluid ejected from the fluid inlet pipe section 12 is diffused obliquely upward to avoid flowing out of the discharge outlet pipe section 14.

In a second aspect, the present invention provides a distillation apparatus for separating an anthracene alkylation product, the distillation apparatus including the above-described distillation alkyl anthracene condensation preventing device. Since the distillation device comprises the distillation alkyl anthracene condensation preventing device, all the beneficial effects brought by the distillation alkyl anthracene condensation preventing device are obviously achieved, and detailed description is omitted here.

Further, the distillation apparatus further includes a first distillation column 30, a second distillation column 40, a product tank 50, and a condenser 60. The product tank 50 includes an alkyl anthracene tank 51 provided on a pipe between the first distillation column 30 and the second distillation column 40, a monoalkylanthracene tank 52 connected to the top of the second distillation column 40 through a condenser 60, and a polyalkylanthracene tank 53 connected to the bottom of the second distillation column 40. The distilled alkyl anthracene condensation preventing apparatus includes a first distilled alkyl anthracene condensation preventing apparatus connected to the alkyl anthracene tank 51, a second distilled alkyl anthracene condensation preventing apparatus connected to the monoalkyl anthracene tank 52, a third distilled alkyl anthracene condensation preventing apparatus connected to the polyalkyl anthracene tank 53, and a fourth distilled alkyl anthracene condensation preventing apparatus connected to the condenser 60.

Specifically, the distillation solvent and the mixture of anthracene and anthracene precursor compound are distilled in the first distillation column 30 to obtain alkyl anthracene. The alkyl anthracene obtained from the first distillation tower 30 is introduced into the second distillation tower 40 for distillation and separation again to obtain monoalkyl anthracene and polyalkyl anthracene, the product tank 50 is used for collecting various types of alkyl anthracene, and the distillation alkyl anthracene condensation preventing device arranged on the pipeline prevents anthracene from condensing on the pipeline to block the pipeline.

As shown in fig. 2, in the illustrated embodiment, the compounds in the distillation solvent tank 70 and the raw material tank 80 are introduced into the first distillation tower 30 to be distilled, the product tank 50 connected to the bottom of the first distillation tower 30 is an alkyl anthracene tank 51 to collect alkyl anthracene flowing out from the bottom of the first distillation tower 30, the alkyl anthracene includes monoalkyl anthracene and polyalkylanthracene, and the first distillation alkyl anthracene condensation preventing device is connected to the alkyl anthracene tank 51. The alkyl anthracene tank 51 is connected to the second distillation column 40, and the alkyl anthracene in the alkyl anthracene tank 51 is introduced into the second distillation column 40 to be distilled again, so that monoalkylanthracene and polyalkylanthracene are obtained. The monoalkylanthracene flows out from the top of the second distillation column 40, passes through a condenser 60, and then enters the monoalkylanthracene tank 52, and the polyalkylanthracene flows into the polyalkylanthracene tank 53 from the bottom of the second distillation column 40. A second distilled alkyl anthracene condensation preventing device and a third distilled alkyl anthracene condensation preventing device are connected to the monoalkyl anthracene tank 52 and the polyalkyl anthracene tank 53, respectively, and a fourth distilled alkyl anthracene condensation preventing device is connected to the condenser 60. In other words, four distillation alkyl anthracene condensation preventing devices are arranged in the distillation device and are located at positions where condensation is easy to occur, so that pipeline blockage is avoided, and separation efficiency is improved.

It should be noted that various distillation apparatuses known in the art can be used for the distillation column in this example, for example: a sieve tray column or a packed column, more preferably a packed column.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.

It should be noted that, in the foregoing embodiments, various features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described in further detail in the embodiments of the present invention.

In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A distilled alkyl anthracene condensation preventing apparatus, characterized by comprising:

a tank body (10) which is internally provided with a fluid separation cavity (11); and

a vertical baffle (20) disposed within the fluid separation chamber (11) for separating fluid;

the wall of the tank body (10) is provided with a fluid inlet pipe section (12) extending from the circumferential side of the fluid separation chamber (11), a fluid outlet pipe section (13) extending from the top of the fluid separation chamber (11), and a discharge pipe section (14) extending from the lowest point of the fluid separation chamber (11).

2. The distilled alkyl anthracene condensation preventing device according to claim 1, comprising a plurality of the vertical baffles (20), wherein the vertical baffles (20) are sequentially and alternately connected to the two vertical ends of the tank body (10) at intervals and form a circuitous extending fluid channel (111).

3. The distilled alkyl anthracene condensation preventing device according to claim 2, wherein the fluid outlet pipe section (13) is located at the end of the fluid channel (111).

4. A distilled alkyl anthracene condensation preventing apparatus according to claim 1, wherein the tank (10) comprises a vertically arranged cylindrical section (15) and a throat section (16), the throat section (16) having a decreasing bore diameter from top to bottom, the discharge port section (14) being located at the lowest point of the throat section (16).

5. The distilled alkyl anthracene condensation preventing apparatus according to claim 4, wherein the throat section (16) is hemispherical or conical.

6. The distilled alkyl anthracene condensation preventing apparatus according to claim 4, wherein the height of the cylindrical section (15) is 100mm to 500mm, and the diameter of the cylindrical section (15) is 50mm to 300 mm.

7. The distilled alkyl anthracene condensation preventing device according to claim 4, wherein the fluid inlet pipe section (12) is located at the bottom of the peripheral wall of the cylindrical section (15).

8. The distilled alkyl anthracene condensation preventing device according to claim 1, wherein the number of the vertical baffles is 1-10.

9. A distillation apparatus for separating an anthracene alkylation product, characterized in that the distillation apparatus comprises the distilled alkyl anthracene condensation preventing device according to any one of claims 1 to 8.

10. The distillation apparatus for separating an anthracene alkylation product according to claim 9, further comprising a first distillation column (30), a second distillation column (40), a product tank (50), and a condenser (60); the product tank (50) includes an alkyl anthracene tank (51) provided on a line between the first distillation column (30) and the second distillation column (40), a monoalkylanthracene tank (52) connected to the top of the second distillation column (40) through the condenser (60), and a polyalkylanthracene tank (53) connected to the bottom of the second distillation column (40); the distillation alkyl anthracene condensation preventing device comprises a first distillation alkyl anthracene condensation preventing device connected with the alkyl anthracene tank (51), a second distillation alkyl anthracene condensation preventing device connected with the monoalkyl anthracene tank (52), a third distillation alkyl anthracene condensation preventing device connected with the polyalkyl anthracene tank (53) and a fourth distillation alkyl anthracene condensation preventing device connected with the condenser (60).

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