Anti-coking fractionating tower for heavy oil processing

Abstract

The utility model discloses an anti-coking fractionating tower for heavy oil processing. The anti-coking fractionating tower comprises a tower body, a hollow cooling cavity is arranged in the tower wall at the bottom of the tower body, a filter cover is fixedly mounted in the bottom of the tower body, a fixing frame is fixedly connected to one side of the bottom of the tower body, a plurality of supporting blocks are fixedly connected to the fixing frame, and a cooling liquid box is fixedly connected to the top surfaces of the supporting blocks. By arranging the cooling liquid tank, the first pump body, the liquid return pipe, the second pump body, the liquid outlet pipe, the cooling cavity and the like, cooling liquid entering the cooling cavity through the liquid outlet pipe can absorb heat of oil at the bottom of the tower, the temperature of the oil at the bottom of the tower can be reduced, coking can be prevented, and the service life of the tower is prolonged. The cooling liquid which enters the cooling cavity and absorbs heat can enter the cooling liquid box through the liquid return pipe to be cooled and then is discharged through the liquid outlet pipe, and the cooling liquid can be recycled.

Description

Technical Field

[0001] This utility model relates to the field of fractionation tower technology, specifically to a heavy oil processing anti-coking fractionation tower. Background Technology

[0002] With the increasing trend of heavier and lower-quality crude oil worldwide, developing deep processing and cleaner production of heavy oil has become a prominent task for the global refining industry, representing a significant opportunity for the industry to adjust its crude oil structure, improve economic efficiency, and enhance corporate competitiveness. Compared to existing fixed-bed hydrotreating technologies for diesel, wax oil, and mixtures of wax oil and residue, fluidized bed and slurry bed (fluidized bed) hydrotreating technologies are highly efficient for processing pure vacuum residue. However, there is still considerable room for improvement in current heavy oil hydrotreating technologies, such as how to address the scaling and coking problems at the bottom of the equipment.

[0003] In response, Chinese utility model patent CN215757169U discloses a catalytic oil slurry system anti-coking fractionation tower, relating to the field of petrochemical equipment technology. The tower includes a tower body, an outlet cylinder, a gas delivery pipe, a cooling ring pipe, and a filter cover. The tower body has an oil and gas inlet and a low-temperature product oil slurry inlet on its side, and a bottom oil outlet at the bottom. The upper part of the tower's inner cavity has several staggered herringbone baffles. The outlet cylinder is centrally fixed in the inner cavity below the herringbone baffles. The outlet cylinder has a cylindrical structure with a conical cap at the top and several outlet holes on its wall. Its bottom is connected to the oil and gas inlet via the gas delivery pipe. The cooling ring pipe is fixedly supported on the inner wall of the tower below the outlet cylinder and is connected to the low-temperature product oil slurry inlet. The bottom of the cooling ring pipe has several nozzles, and the cooling ring pipe is coaxial with the outlet cylinder. The filter cover is fixedly installed on the bottom oil outlet. This device has a simple structure, diverse anti-coking mechanisms, and strong practicality.

[0004] This heavy oil processing anti-coking fractionation tower has a cooling chamber inside the tower wall at the bottom of the tower body. Cooling liquid is introduced into the cooling chamber to reduce the temperature of the oil at the bottom of the tower, which can prevent coking. However, the cooling liquid is not easy to circulate and reuse.

[0005] Therefore, we propose a heavy oil processing anti-coking fractionation tower to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a heavy oil processing anti-coking fractionation tower to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a heavy oil processing anti-coking fractionation tower, comprising a tower body, a hollow cooling chamber provided in the tower wall at the bottom of the tower body, a filter cover fixedly installed in the bottom of the tower body, a fixing frame fixedly connected to one side of the bottom of the tower body, a plurality of support blocks fixedly connected to the fixing frame, a coolant tank fixedly connected to the top surface of the support blocks, a pump body one fixedly installed on one side of the coolant tank, a return pipe fixedly installed at the input end of the pump body one, the other end of the return pipe fixedly installed in the tower wall at the bottom of the tower body, a pump body two fixedly installed on one side of the coolant tank, an outlet pipe fixedly installed at the output end of the pump body two, the other end of the outlet pipe fixedly installed in the tower wall at the bottom of the tower body.

[0008] Preferably, multiple support legs are fixedly installed at the bottom of the tower body, and a refrigeration device is provided inside the coolant tank.

[0009] Preferably, the return pipe and the cooling chamber are connected, and the outlet pipe and the cooling chamber are also connected.

[0010] Preferably, a discharge pipe is fixedly installed inside the tower wall at the bottom of the tower body, the discharge pipe is connected to the cooling chamber, and a valve is provided on the discharge pipe.

[0011] Preferably, a discharge port is provided at the bottom of the tower body, and a discharge pipe is fixedly installed at the bottom end of the tower body, with the discharge port and the discharge pipe being internally connected.

[0012] Preferably, an injection pipe is fixedly installed on the top surface of the coolant tank, the injection pipe is connected to the inside of the coolant tank, and a sealing cap is provided on the top of the injection pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model incorporates a coolant tank, a pump body 1, a return pipe, a pump body 2, an outlet pipe, and a cooling chamber. The coolant entering the cooling chamber through the outlet pipe absorbs heat from the oil at the bottom of the tower, reducing its temperature and preventing coking. The coolant, having absorbed heat in the cooling chamber, returns to the coolant tank through the return pipe for further cooling before being discharged through the outlet pipe, thus enabling the recycling of the coolant. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a frontal cross-sectional view of a partial structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the structure of this utility model from another perspective;

[0018] Figure 4This is a schematic diagram of the rear cross-sectional structure of a portion of the present invention.

[0019] In the diagram: 1. Tower body; 2. Support leg; 3. Cooling chamber; 4. Filter cover; 5. Discharge port; 6. Discharge pipe; 7. Discharge pipe; 8. Valve; 9. Fixing frame; 10. Coolant tank; 11. Injection pipe; 12. Support block; 13. Sealing cover; 14. Pump body one; 15. Return pipe; 16. Pump body two; 17. Discharge pipe; 18. Refrigeration unit. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1:

[0022] Please see Figure 1-4 This is the first embodiment of the present invention, which provides a technical solution: a heavy oil processing anti-coking fractionation tower, including a tower body 1, a hollow cooling chamber 3 in the tower wall at the bottom of the tower body 1, a filter cover 4 fixedly installed in the bottom of the tower body 1 to intercept detached coke blocks and prevent them from clogging the outlet 5, a fixing frame 9 fixedly connected to one side of the bottom of the tower body 1, a plurality of support blocks 12 fixedly connected to the fixing frame 9, a coolant tank 10 fixedly connected to the top surface of the support blocks 12, a pump body 14 fixedly installed on one side of the coolant tank 10, a return pipe 15 fixedly installed at the input end of the pump body 14, and the other end of the return pipe 15 fixedly installed in the tower wall at the bottom of the tower body 1, a pump body 2 16 fixedly installed on one side of the coolant tank 10, an outlet pipe 17 fixedly installed at the output end of the pump body 2 16, and the other end of the outlet pipe 17 fixedly installed in the tower wall at the bottom of the tower body 1.

[0023] Example 2:

[0024] Please see Figure 1-4 This is the second embodiment of the present invention. Based on the previous embodiment, multiple support legs 2 are fixedly installed at the bottom of the tower body 1 to support the tower body 1. A refrigeration device 18 is provided in the coolant tank 10 to cool the coolant entering the coolant tank 10.

[0025] The return pipe 15 is connected to the inside of the cooling chamber 3, and the outlet pipe 17 is also connected to the inside of the cooling chamber 3.

[0026] A discharge pipe 7 is fixedly installed inside the bottom wall of the tower body 1. The discharge pipe 7 is connected to the interior of the cooling chamber 3. A valve 8 is provided on the discharge pipe 7, and the coolant in the cooling chamber 3 can be discharged by opening the valve 8.

[0027] A discharge port 5 is opened at the bottom of the tower body 1, and a discharge pipe 6 is fixedly installed at the bottom of the tower body 1. A valve is provided on the discharge pipe 6, and the discharge port 5 and the discharge pipe 6 are internally connected.

[0028] A liquid injection pipe 11 is fixedly installed on the top surface of the coolant tank 10. The liquid injection pipe 11 is connected to the inside of the coolant tank 10. A sealing cap 13 is provided on the top of the liquid injection pipe 11. Coolant can be injected through the liquid injection pipe 11 by unscrewing the sealing cap 13.

[0029] Example 3:

[0030] Please see Figure 1-4 This is the second embodiment of the present invention. Based on the above two embodiments, in actual use, during fractionation, pump body 14 and pump body 2 16 are connected to an external power source. By starting pump body 14, the coolant in the coolant tank 10 can enter the cooling chamber 3 set in the bottom wall of the tower body 1 through the outlet pipe 17. This can absorb heat from the oil at the bottom of the tower, reduce the temperature of the oil at the bottom of the tower, and prevent coking. Simultaneously, pump body 2 16 is started. The coolant that has absorbed heat in the cooling chamber 3 can enter the coolant tank 10 again through the return pipe 15 for cooling before being discharged through the outlet pipe 17, thus recycling the coolant.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heavy oil processing anti-coking fractionation tower, comprising a tower body (1), characterized in that: A hollow cooling chamber (3) is provided in the tower wall at the bottom of the tower body (1). A filter cover (4) is fixedly installed in the bottom of the tower body (1). A fixing frame (9) is fixedly connected to one side of the bottom of the tower body (1). Multiple support blocks (12) are fixedly connected to the fixing frame (9). A coolant tank (10) is fixedly connected to the top surface of the support block (12). A pump body one (14) is fixedly installed on one side of the coolant tank (10). One end of the return pipe (15) is fixedly installed at the input end of the pump body one (14). The other end of the return pipe (15) is fixedly installed in the tower wall at the bottom of the tower body (1). A pump body two (16) is fixedly installed on one side of the coolant tank (10). One end of the outlet pipe (17) is fixedly installed at the output end of the pump body two (16). The other end of the outlet pipe (17) is fixedly installed in the tower wall at the bottom of the tower body (1).

2. The heavy oil processing anti-coking fractionation tower according to claim 1, characterized in that: The tower body (1) has multiple support legs (2) fixedly installed at the bottom, and the coolant tank (10) is equipped with a refrigeration device (18).

3. The heavy oil processing anti-coking fractionation tower according to claim 1, characterized in that: The return pipe (15) and the cooling chamber (3) are internally connected, and the outlet pipe (17) and the cooling chamber (3) are internally connected.

4. The heavy oil processing anti-coking fractionation tower according to claim 1, characterized in that: The bottom wall of the tower body (1) is fixedly installed with a discharge pipe (7), which is connected to the cooling chamber (3). A valve (8) is provided on the discharge pipe (7).

5. The heavy oil processing anti-coking fractionation tower according to claim 1, characterized in that: The bottom of the tower body (1) has a discharge port (5), and the bottom of the tower body (1) is fixedly installed with a discharge pipe (6). The discharge port (5) and the discharge pipe (6) are internally connected.

6. The heavy oil processing anti-coking fractionation tower according to claim 1, characterized in that: The top surface of the coolant tank (10) is fixedly installed with an injection pipe (11), which is connected to the inside of the coolant tank (10). The top of the injection pipe (11) is provided with a sealing cap (13).

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