Environment-friendly naphtha hydrofining reactor

Abstract

The utility model relates to the technical field of petroleum production, and discloses an environment-friendly naphtha hydrofining reactor which comprises a shell, a water tank is arranged in the top end of the shell, a rotating shaft penetrates through the middle position of the shell, stirring blades are fixedly installed on the rotating shaft, a motor is fixedly connected to the bottom end of the rotating shaft, and the bottom end of the rotating shaft is fixedly connected with a rotary shaft. An inner shell is arranged between the outer shell and the rotating shaft, a heat-conducting fin is arranged between the inner shell and the outer shell, a scraping plate is attached to the face, close to the rotating shaft, of the inner shell, the left side of the outer shell communicates with a feeding port, the right side of the outer shell communicates with a discharging port, and connecting pipes are fixedly connected to the upper outer surface and the lower outer surface of the outer shell. According to the environment-friendly naphtha hydrofining reactor, temperature balance in the reactor in the naphtha hydrofining reaction process can be well maintained, the scraping plates are arranged and can rotate along with the rotating shaft, and the scraping plates are attached to the inner wall of the inner shell so that naphtha can be prevented from being attached to the inner wall of the inner shell.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum production, in particular to an environmentally friendly naphtha hydrogenation refining reactor. Background Art

[0002] Naphtha is one of the petroleum products, also known as chemical light oil and crude gasoline. It is a light oil used for chemical raw materials produced by processing crude oil or other raw materials. It is mainly used as a chemical raw material. There are various distillation ranges due to different uses. China stipulates that the distillation range is about 220℃ for the initial distillation point. When used as a cracking raw material for producing ethylene, the 70℃~145℃ fraction is used, which is called light naphtha; when the purpose is to produce aromatics or high-octane gasoline, the 70℃~180℃ fraction is used, which is called heavy naphtha. When used as a solvent, it is called solvent naphtha; aromatic solvents from coal tar are also called heavy naphtha or solvent naphtha.

[0003] Since the naphtha hydrotreating process involves a mixture of gas and liquid, how to maintain temperature balance in the naphtha hydrotreating unit is an issue that designers need to consider. While being able to control the temperature balance, striving to improve the quality of the naphtha hydrotreating process is also a goal we have been pursuing. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides an environmentally friendly naphtha hydrorefining reactor, which has the advantages of ensuring temperature balance and improving the quality of the refining process, and solves the problem of difficult temperature balance in the naphtha hydrorefining process.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an environmentally friendly naphtha hydrotreating reactor, comprising an outer shell, a water tank is arranged inside the top of the outer shell, a rotating shaft passes through the middle position of the outer shell, a stirring blade is fixedly mounted on the rotating shaft, a motor is fixedly connected to the bottom end of the rotating shaft, an inner shell is arranged between the outer shell and the rotating shaft, a heat conducting sheet is arranged between the inner shell and the outer shell, a scraper is attached to a side of the inner shell close to the rotating shaft, a feed port is connected to the left side of the outer shell, a discharge port is connected to the right side of the outer shell, and connecting pipes are fixedly connected to the upper and lower outer surfaces of the outer shell.

[0008] Preferably, the shell is divided into three sections: upper, middle and lower, and each section is bolted together by a connecting ring.

[0009] Preferably, the bottom ends of the left and right sides of the water tank are connected to the space between the inner shell and the outer shell, and the water in the water tank can be added to the space between the inner shell and the outer shell, where there is a heat conducting sheet.

[0010] Preferably, a number of heat conducting plates are fixedly mounted on the inner shell, and the inner shell is made of heat conducting material, so that water can be used to make the temperature in the environmentally friendly naphtha hydrotreating reactor relatively balanced during stirring, so as to prevent the temperature from being too high and causing the state of gas and naphtha to be unstable.

[0011] Preferably, a closed space is formed between the inner shell, the bottom of the water tank and the upper plate of the lower half of the outer shell, and the space is filled with hydrogen, which is used to hydro-refining the naphtha and filter out various impurities in the naphtha.

[0012] Preferably, the upper end of the rotating shaft is fixedly connected to the bottom of the water tank, the upper end and the lower end of the scraper are fixedly connected to the rotating shaft, and a number of stirring blades are installed on the rotating shaft and are parallel to each other from top to bottom.

[0013] Preferably, the motor is arranged inside the lower end of the housing.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides an environmentally friendly naphtha hydrotreating reactor, which has the following beneficial effects:

[0016] 1. The environmentally friendly naphtha hydrotreating reactor is provided with a water tank at the top, the bottom side of the water tank is communicated with the space between the inner shell and the outer shell of the environmentally friendly naphtha hydrotreating reactor, a plurality of heat conducting plates are installed on the inner shell of the environmentally friendly naphtha hydrotreating reactor, and the inner shell is also made of heat conducting material, which can well maintain the internal temperature balance of the environmentally friendly naphtha hydrotreating reactor when it is working.

[0017] 2. The environmentally friendly naphtha hydrorefining reactor is provided with a scraper on the inner wall of the inner shell, and the two ends of the scraper are fixedly connected to the rotating shaft. When the motor is started and the rotating shaft is driven to rotate, the scraper will also rotate along the inner wall of the inner shell. When the environmentally friendly naphtha hydrorefining reactor hydrorefines the injected naphtha, the scraper can prevent the naphtha from adhering to the inner wall of the inner shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the external main body of the structure of the utility model;

[0020] Figure 3 It is a top plan view of the structure of the utility model;

[0021] Figure 4 It is a detailed schematic diagram of the outer shell and the inner shell of the structure of the utility model.

[0022] Among them: 1. water tank; 2. outer shell; 3. inner shell; 4. rotating shaft; 5. stirring blade; 6. motor; 7. bottom shell; 8. connecting ring; 9. discharge port; 10. scraper; 11. heat conducting plate; 12. feed port; 13. connecting pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 An environmentally friendly naphtha hydrotreating reactor comprises an outer shell 2, a water tank 1 is arranged inside the top of the outer shell 2, a rotating shaft 4 is passed through the middle position of the outer shell, a stirring blade 5 is fixedly mounted on the rotating shaft 4, a motor 6 is fixedly connected to the bottom end of the rotating shaft 4, an inner shell 3 is arranged between the outer shell 2 and the rotating shaft 4, a heat conducting sheet 11 is arranged between the inner shell 3 and the outer shell 2, a scraper 10 is attached to the side of the inner shell 3 close to the rotating shaft 4, a feed port 12 is connected to the left side of the outer shell 2, a discharge port 9 is connected to the right side of the outer shell 2, and a connecting pipe 13 is fixedly connected to the upper and lower outer surfaces of the outer shell.

[0025] The outer shell 2 is divided into three sections: upper, middle and lower sections, and each section is bolted together by a connecting ring 8. The bottom ends of the left and right sides of the water tank 1 are connected to the space between the inner shell 3 and the outer shell 2. The water in the water tank 1 can be added to the space between the inner shell 3 and the outer shell 2. There is a heat conductive sheet 11 here. A number of heat conductive sheets 11 are fixedly installed on the inner shell 3, and the inner shell 3 is made of heat conductive material. Water can be used to make the temperature in the environmentally friendly naphtha hydrotreating reactor relatively balanced during stirring to prevent the temperature from being too high and causing the gas and naphtha to be unstable.

[0026] An enclosed space is formed between the inner shell 3, the bottom of the water tank 1 and the upper plate of the lower half of the outer shell 2. The space is filled with hydrogen, which is used to hydrogenate and refine naphtha and filter out various impurities in the naphtha. The upper end of the rotating shaft 4 is fixedly connected to the bottom of the water tank 1, and the upper and lower ends of the scraper 10 are fixedly connected to the rotating shaft. A number of stirring blades 5 are installed on the rotating shaft 4, and they are parallel to each other from top to bottom. The motor 6 is arranged inside the lower end of the outer shell 2.

[0027] When in use, naphtha can enter the environmentally friendly naphtha hydrorefining reactor from the feed port 12, and the inner shell 3 is filled with hydrogen. After the power is turned on and the motor 6 is started, the motor can drive the stirring blades 5 on the rotating shaft 4 to stir the naphtha, hydrorefining it, and remove impurities. The water tank 1 on the top of the environmentally friendly naphtha hydrorefining reactor is supplied with water. The inner shell 3 made of heat conductive sheet 11 and heat conductive material can keep the internal working environment temperature of the environmentally friendly naphtha hydrorefining reactor stable. The two ends of the rotating shaft 4 are fixedly connected with the scraper 10, and the scraper 10 is in contact with the inner wall of the inner shell 3. Therefore, when the rotating shaft rotates, the scraper can hang down the naphtha attached to the inner wall of the inner shell to avoid attachment, thereby improving the naphtha refining efficiency. The refined naphtha can flow out from the discharge port 9.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly naphtha hydrotreating reactor, comprising a housing (2), characterized in that: A water tank (1) is arranged inside the top of the outer shell (2); a rotating shaft (4) passes through the middle of the outer shell; a stirring blade (5) is fixedly mounted on the rotating shaft (4); a motor (6) is fixedly connected to the bottom end of the rotating shaft (4); an inner shell (3) is arranged between the outer shell (2) and the rotating shaft (4); a heat conducting sheet (11) is arranged between the inner shell (3) and the outer shell (2); a scraper (10) is attached to a side of the inner shell (3) close to the rotating shaft (4); a feed port (12) is connected to the left side of the outer shell (2); a discharge port (9) is connected to the right side of the outer shell (2); and connecting pipes (13) are fixedly connected to the upper and lower outer surfaces of the outer shell.

2. The environmentally friendly naphtha hydrotreating reactor according to claim 1, characterized in that: The outer shell (2) is divided into three sections: upper, middle and lower sections, and each section is bolted together via a connecting ring (8).

3. The environmentally friendly naphtha hydrotreating reactor according to claim 1, characterized in that: The bottom ends of the left and right sides of the water tank (1) are in communication with the space between the inner shell (3) and the outer shell (2).

4. The environmentally friendly naphtha hydrotreating reactor according to claim 1, characterized in that: A number of heat-conducting sheets (11) are fixedly mounted on the inner shell (3), and the inner shell (3) is made of heat-conducting material.

5. The environmentally friendly naphtha hydrotreating reactor according to claim 1, characterized in that: A closed space is formed between the inner shell (3), the bottom of the water tank (1) and the upper plate of the lower half of the outer shell (2), and the space is filled with hydrogen.

6. The environmentally friendly naphtha hydrotreating reactor according to claim 1, characterized in that: The upper end of the rotating shaft (4) is fixedly connected to the bottom of the water tank (1), the upper end and the lower end of the scraper (10) are fixedly connected to the rotating shaft, and a plurality of stirring blades (5) are installed on the rotating shaft (4) and are parallel to each other from top to bottom.

7. The environmentally friendly naphtha hydrotreating reactor according to claim 1, characterized in that: The motor (6) is arranged inside the lower end of the housing (2).

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