Tail oil hydrocracking energy-saving device

Abstract

The utility model relates to a tail oil hydrocracking energy-saving device and belongs to the technical field of hydrotreating processes. Comprising a refining heat high-pressure separation tank, a high-temperature high-pressure reciprocating pump, a modification feeding heat exchanger, a heating furnace, a modification reactor, a preheating assembly and a temperature control assembly, and the refining heat high-pressure separation tank, the high-temperature high-pressure reciprocating pump, the modification feeding heat exchanger, the heating furnace and the modification reactor are sequentially communicated through a first pipeline, a second pipeline, a third pipeline and a fourth pipeline; the peripheries of the first pipeline, the second pipeline, the third pipeline and the fourth pipeline are all sleeved with shells. The tail oil and diesel oil heating device provides a heating function for tail oil and diesel oil in the pipeline transportation process, so that the temperature change of the tail oil and the diesel oil in the pipeline transportation process is avoided, and the heating efficiency of the modified heat exchanger and the heating furnace on the tail oil and the diesel oil is improved.

Description

Technical Field

[0001] The utility model relates to a tail oil hydrocracking energy-saving device, belonging to the technical field of hydroprocessing technology. Background Art

[0002] With the rapid development of my country's steel and coal chemical industries, the output of coal tar is increasing, and the effective utilization of coal tar is becoming more and more important. At present, the conventional processing methods of coal tar include extraction of chemicals, direct blending of fuel oil, delayed coking, hydrogenation and modification, etc.

[0003] Chinese patent (CN204434561U) discloses a tail oil hydrocracking energy-saving device. This utility model relates to equipment for a hydrotreating process, specifically to a tail oil hydrocracking energy-saving device, including a refining hot high-pressure separation tank, which is sequentially connected to a high-temperature and high-pressure reciprocating pump, a reforming feed heat exchanger, a heating furnace, and a reforming reactor. The high-temperature and high-pressure reciprocating pump includes a cylinder body and a piston rod, the piston rod is arranged at the end of the cylinder body, and a guide sleeve is provided corresponding to the piston rod. The guide sleeve is divided into two sections, and a sealing gasket is provided between the two sections. The sealing gasket includes an inner ring, a middle ring, and an outer ring. Flexible graphite is provided between the inner ring and the middle ring, and between the middle ring and the outer ring. A flexible material is provided on the outer periphery of the inner ring near the flexible graphite. A circle of compression sleeve is provided on the outer side of the guide sleeve. The utility model reduces the process steps, directly heating and cracking the hot high-pressure separation oil after it is pressurized by the high-pressure pump, reducing the severity of the reaction, making the reforming reaction more controllable, reducing safety hazards, and saving energy.

[0004] According to the above patent, although the existing tail oil hydrocracking energy-saving device increases the pressure of 260°C hot high-fraction oil from a high-pressure pump to 19Mpa and directly heats it for cracking reaction, thereby reducing the severity of the reaction, making the reforming reaction more controllable, reducing safety hazards, and saving energy to the greatest extent, the pipeline used to transport tail oil and diesel to its high-temperature and high-pressure reciprocating pump during the production process, and the subsequent pipeline transported to its reforming heat exchanger and heating furnace through the high-temperature and high-pressure reciprocating pump are not provided with a continuous heating structure, which inevitably causes the temperature of the tail oil and diesel to change during the transportation process, and then causes the tail oil and diesel to enter the interior of the reforming heat exchanger and heating furnace, reducing the efficiency of the reforming heat exchanger and heating furnace in heating the tail oil and diesel. Therefore, the above patent is improved based on the problems raised. Utility Model Content

[0005] The technical problem to be solved by the utility model is: to overcome the shortcomings of the existing technology and provide a tail oil hydrocracking energy-saving device to provide a heating function for the tail oil and diesel during pipeline transportation, thereby avoiding temperature changes of the tail oil and diesel during pipeline transportation, and improving the efficiency of the reforming heat exchanger and the heating furnace in heating the tail oil and diesel.

[0006] The utility model discloses a tail oil hydrocracking energy-saving device, comprising a refining heat high separation tank, a high-temperature and high-pressure reciprocating pump, a reforming feed heat exchanger, a heating furnace, a reforming reactor, a preheating component and a temperature control component. The refining heat high separation tank, the high-temperature and high-pressure reciprocating pump, the reforming feed heat exchanger, the heating furnace and the reforming reactor are connected in sequence through a first pipeline, a second pipeline, a third pipeline and a fourth pipeline. The outer peripheries of the first pipeline, the second pipeline, the third pipeline and the fourth pipeline are all sheathed with a shell.

[0007] The preheating assembly includes a heating tube and a power supply device, and the heating tube is placed inside the shell;

[0008] The temperature control component includes a control mainboard, a control console, a temperature sensing device, a temperature monitoring device and a current regulating device. The control mainboard, the control console, the temperature sensing device, the temperature monitoring device and the current regulating device are all electrically connected to the power supply device. A casing is fixed to the outer shell, and the control mainboard is placed in the casing. The control mainboard is electrically connected to the control console. The temperature sensing device passes through the outer shell and is connected to the heating tube, and is also electrically connected to the control mainboard. The temperature monitoring device is placed on the outer periphery of the first pipe, the second pipe, the third pipe and the fourth pipe, and is electrically connected to the control mainboard. The current regulating device is electrically connected to the control mainboard.

[0009] A protective sleeve is provided on the outside of the temperature sensing device, and the protective sleeve is fixedly connected to the outer shell.

[0010] The shell is provided with a plurality of inspection openings.

[0011] Flexible joints are provided at both ends of the first pipeline, both ends of the second pipeline, both ends of the third pipeline and both ends of the fourth pipeline.

[0012] A heat insulating pad is provided between the heating tube and the shell, and a support rod is provided on the outer periphery of the heating tube corresponding to the heat insulating pad.

[0013] An antistatic device is provided between the heat insulating pad and the shell.

[0014] A reinforcing rib is provided between the antistatic device and the shell, and the reinforcing rib is bonded to the antistatic device.

[0015] A rock wool pad is provided between the reinforcing rib and the shell.

[0016] Foam cotton is arranged between the rock wool pad and the shell.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] (1) The present invention is capable of accurately monitoring and adjusting the temperature of the pipeline and reactor by providing a temperature sensing device and a temperature monitoring device, thereby improving the efficiency of the reaction. The current regulating device is provided to prevent overheating and overcurrent, thereby improving operational safety and reducing energy consumption. The electrical connection between the control board and the console allows the operator to remotely monitor and adjust the system operation, improving the convenience and flexibility of operation.

[0019] (2) A protective cover is provided on the outside of the temperature sensing device and is fixed to the housing. The protective cover can protect the temperature sensing device from physical impact and friction damage. By isolating the sensing device from direct contact with the outside world, the electrical risk and the possibility of damage to the sensing device are reduced.

[0020] (3) An insulation pad is provided between the heating tube and the outer shell, and support rods are provided on the outer periphery of the heating tube corresponding to the insulation pad. The insulation pad can reduce heat conduction between the heating tube and the outer shell, thereby reducing heat loss and improving the thermal efficiency of the system. At the same time, the insulation pad can prevent the outer shell from being deformed or damaged due to long-term high temperature, thereby extending the service life of the outer shell. The support rods serve as supports for the heating tube, reducing vibration and noise caused by thermal expansion or mechanical vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of Example 1 of the present utility model;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the housing in Example 1 of the present utility model;

[0023] Figure 3 yes Figure 2 A in the middle is an enlarged schematic diagram;

[0024] Figure 4 yes Figure 2 The enlarged schematic diagram of point B in the middle;

[0025] Figure 5 It is a structural diagram of the temperature control component in Example 1 of the present utility model.

[0026] In the figure: 1. Refining hot high-resolution tank; 2. Power supply device; 3. First pipeline; 4. High-temperature and high-pressure reciprocating pump; 5. Second pipeline; 6. Reforming feed heat exchanger; 7. Third pipeline; 8. Heating furnace; 9. Fourth pipeline; 10. Reforming reactor; 11. Temperature monitoring device; 12. Outer shell; 13. Heating tube; 14. Control console; 15. Case; 16. Control main board; 17. Current regulating device; 18. Temperature sensing device; 19. Protective cover; 20. Support rod; 21. Insulation pad; 22. Anti-static device; 23. Reinforcement rib; 24. Rock wool pad; 25. Foam cotton. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the embodiments:

[0028] Example 1

[0029] like Figures 1 to 5 As shown, the tail oil hydrocracking energy-saving device described in the present invention includes a refining heat high-pressure separation tank 1, a high-temperature and high-pressure reciprocating pump 4, a reforming feed heat exchanger 6, a heating furnace 8, a reforming reactor 10, a preheating component and a temperature control component. The refining heat high-pressure separation tank 1, the high-temperature and high-pressure reciprocating pump 4, the reforming feed heat exchanger 6, the heating furnace 8 and the reforming reactor 10 are connected in sequence through a first pipeline 3, a second pipeline 5, a third pipeline 7 and a fourth pipeline 9. The outer peripheries of the first pipeline 3, the second pipeline 5, the third pipeline 7 and the fourth pipeline 9 are all sheathed with a shell 12;

[0030] The preheating assembly includes a heating tube 13 and a power supply device 2, and the heating tube 13 is placed inside the housing 12;

[0031] The temperature control assembly includes a control mainboard 16, a control console 14, a temperature sensing device 18, a temperature monitoring device 11 and a current regulating device 17. The control mainboard 16, the control console 14, the temperature sensing device 18, the temperature monitoring device 11 and the current regulating device 17 are all electrically connected to the power supply device 2. Figure 5 As shown, the temperature sensing device 18 is a temperature sensor, the temperature monitoring device 11 is a temperature monitor, and the current regulating device 17 is a current regulator. A casing 15 is fixedly connected to the outer shell 12, and a control mainboard 16 is placed in the casing 15. The control mainboard 16 is electrically connected to the console 14. The temperature sensing device 18 passes through the outer shell 12 and is connected to the heating tube 13, and is electrically connected to the control mainboard 16. The temperature monitoring device 11 is placed on the outer periphery of the first pipe 3, the second pipe 5, the third pipe 7 and the fourth pipe 9, and is electrically connected to the control mainboard 16. The current regulating device 17 is electrically connected to the control mainboard 16.

[0032] The temperature sensing device 18 and temperature monitoring device 11 enable precise monitoring and adjustment of the temperature of the pipeline and reactor, thereby improving reaction efficiency. The current regulating device 17 prevents overheating and overcurrent, thereby improving operational safety and reducing energy consumption. The electrical connection between the control board 16 and the console 14 allows operators to remotely monitor and adjust system operation, improving operational convenience and flexibility.

[0033] A protective cover 19 is provided outside the temperature sensing device 18. Figure 2 As shown, the protective cover 19 is fixedly connected to the housing 12. The protective cover 19 can protect the temperature sensing device 18 from physical impact and friction damage, and by isolating the sensing device from direct contact with the outside world, reduce electrical risks and the possibility of damage to the sensing device.

[0034] Several access ports are provided on the housing 12. These ports provide direct access to the interior of the device, allowing maintenance personnel to easily inspect and repair the device without having to disassemble the entire housing 12. Through regular inspection and maintenance, the access ports help to promptly identify and resolve problems, thereby extending the service life of the device.

[0035] Flexible joints are provided at both ends of the first pipe 3, the second pipe 5, the third pipe 7, and the fourth pipe 9. These joints absorb displacement in the piping system caused by thermal expansion or contraction, mechanical vibration, installation errors, or ground subsidence, protecting the pipes from damage. Their design simplifies installation and allows for quick removal when maintenance or replacement is required, saving time and labor.

[0036] A heat insulating pad 21 is provided between the heating tube 13 and the housing 12, and a support rod 20 is provided on the outer periphery of the heating tube 13 corresponding to the heat insulating pad 21. Figure 3 As shown. The thermal insulation pad 21 can reduce heat conduction between the heating tube 13 and the housing 12, thereby reducing heat loss and improving the thermal efficiency of the system. At the same time, the thermal insulation pad 21 can prevent the housing 12 from deformation or damage due to prolonged high temperature, thereby extending the service life of the housing 12. The support rod 20 serves as a support for the heating tube 13, reducing vibration and noise caused by thermal expansion or mechanical vibration.

[0037] An anti-static device 22 is provided between the heat insulating pad 21 and the housing 12. Figure 3 The anti-static device 22 can prevent static electricity from accumulating and avoid damage to electronic equipment or sensitive components due to static electricity discharge.

[0038] A reinforcing rib 23 is provided between the anti-static device 22 and the housing 12. Figure 3 As shown, the reinforcing ribs 23 are bonded to the anti-static device 22. The use of the reinforcing ribs 23 enhances the structural strength of the housing 12 and improves the overall mechanical stability.

[0039] A rock wool pad 24 is provided between the reinforcement rib 23 and the shell 12. Figure 4 As shown. The rock wool pad 24 provides an additional layer of insulation, reducing heat loss and improving energy efficiency.

[0040] Foam cotton 25 is provided between the rock wool pad 24 and the shell 12, such as Figure 4 As shown in the figure, the foam 25 provides an additional layer of insulation, reducing heat loss and improving energy efficiency. It also has excellent sound absorption and shock absorption properties, helping to reduce noise and vibration during equipment operation.

[0041] Working process: During the production process, the temperature in the refined hot high-purity tank 1 is controlled at 260 degrees Celsius, and coal tar enters the refined hot high-purity tank 1 for refining reaction. Coal tar includes gasoline, diesel and tail oil. In the refined hot high-purity tank 1 at 260 degrees Celsius, gasoline and part of the light diesel and tail gas volatilize in the gas phase, leaving diesel and tail oil with larger molecular weight. The remaining diesel and tail oil are sent to the high-temperature and high-pressure reciprocating pump 4 through the first pipeline 3. After the high-temperature and high-pressure reciprocating pump 4 increases the pressure, it is sent to the reforming feed heat exchanger 6 through the second pipeline 5 and then to the heating furnace 8 through the third pipeline 7 for heating. After the heating is completed, it enters the reforming reactor 10 through the fourth pipeline 9 for reforming reaction. After the reforming reaction is completed, it enters the distillation tower for fractionation to complete the cracking of the tail oil. At the same time, the console 14 remotely issues instructions to the control mainboard 16, so that the control mainboard 16 supplies power to the current regulator, thereby the current regulator supplies power to the heating tube 13, thereby making the heating tube 13 fractionated. The first pipe 3, the second pipe 5, the third pipe 7 and the fourth pipe 9 are heated separately, and then the temperature sensor located on the outside of the heating pipe 13 monitors the temperature generated by the heating pipe 13 in real time during this process, and then feeds back the temperature to the control motherboard 16. The control motherboard 16 then feeds back the temperature data to the console 14, so that the console 14 can control the current regulator in real time through the control motherboard 16, thereby ensuring that the current regulator controls the current of its output heating pipe 13, thereby ensuring the preheating of the first pipe 3, the second pipe 5, the third pipe 7 and the fourth pipe 9, thereby ensuring that the high-temperature and high-pressure reciprocating pump 4 is continuously heated during the transportation process to its reforming heat exchanger and heating furnace 8, thereby reducing the temperature change of the tail oil and diesel during transportation, thereby ensuring that when the tail oil and diesel enter the reforming heat exchanger and the heating furnace 8, the efficiency of the reforming heat exchanger and the heating furnace 8 in heating the tail oil and diesel is increased, so as to facilitate use.

[0042] The description of the direction and relative position relationship of the structure in the present invention, such as the description of front, back, left, right, up and down, does not constitute a limitation of the present invention and is only for the convenience of description.

Claims

1. A tail oil hydrocracking energy-saving device, characterized in that: The system comprises a refined heat high separation tank (1), a high-temperature and high-pressure reciprocating pump (4), a reforming feed heat exchanger (6), a heating furnace (8), a reforming reactor (10), a preheating component and a temperature control component. The refined heat high separation tank (1), the high-temperature and high-pressure reciprocating pump (4), the reforming feed heat exchanger (6), the heating furnace (8) and the reforming reactor (10) are connected in sequence through a first pipeline (3), a second pipeline (5), a third pipeline (7) and a fourth pipeline (9). The outer peripheries of the first pipeline (3), the second pipeline (5), the third pipeline (7) and the fourth pipeline (9) are all provided with a shell (12). The preheating assembly includes a heating tube (13) and a power supply device (2), and the heating tube (13) is placed inside the housing (12); The temperature control assembly comprises a control mainboard (16), a control console (14), a temperature sensing device (18), a temperature monitoring device (11) and a current regulating device (17). The control mainboard (16), the control console (14), the temperature sensing device (18), the temperature monitoring device (11) and the current regulating device (17) are all electrically connected to the power supply device (2). A casing (15) is fixedly connected to the outer shell (12). The control mainboard (16) is placed in the casing (15). The control mainboard (16) is electrically connected to the control console (14). The temperature sensing device (18) passes through the outer shell (12) and is connected to the heating pipe (13), and is also electrically connected to the control mainboard (16). The temperature monitoring device (11) is placed on the periphery of the first pipe (3), the second pipe (5), the third pipe (7) and the fourth pipe (9), and is electrically connected to the control mainboard (16). The current regulating device (17) is electrically connected to the control mainboard (16).

2. The tail oil hydrocracking energy-saving device according to claim 1, characterized in that: A protective sleeve (19) is provided on the outside of the temperature sensing device (18), and the protective sleeve (19) is fixedly connected to the outer shell (12).

3. The tail oil hydrocracking energy-saving device according to claim 2, characterized in that, The outer shell (12) is provided with a plurality of inspection openings.

4. The tail oil hydrocracking energy-saving device according to claim 3, characterized in that: Flexible joints are provided at both ends of the first pipeline (3), both ends of the second pipeline (5), both ends of the third pipeline (7) and both ends of the fourth pipeline (9).

5. The tail oil hydrocracking energy-saving device according to any one of claims 1 to 4, characterized in that: A heat insulating pad (21) is provided between the heating tube (13) and the housing (12), and a support rod (20) is provided on the outer periphery of the heating tube (13) corresponding to the heat insulating pad (21).

6. The tail oil hydrocracking energy-saving device according to claim 5, characterized in that: An antistatic device (22) is provided between the heat insulating pad (21) and the housing (12).

7. The tail oil hydrocracking energy-saving device according to claim 6, characterized in that: A reinforcing rib (23) is provided between the antistatic device (22) and the housing (12), and the reinforcing rib (23) is bonded to the antistatic device (22).

8. The tail oil hydrocracking energy-saving device according to claim 7, characterized in that: A rock wool pad (24) is provided between the reinforcing rib (23) and the outer shell (12).

9. The tail oil hydrocracking energy-saving device according to claim 8, characterized in that: Foam cotton (25) is arranged between the rock wool pad (24) and the shell (12).

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