A pre-flash heated split feed device

Abstract

The utility model relates to the technical field of petroleum chemical industry especially, relate to a kind of preflash heating's split quality feed device, the preflash heating's split quality feed device, including, storage tank, the storage tank outside is provided with shunt tank, the storage tank bottom is fixedly connected with support plate symmetrically, the support plate bottom is fixedly connected with bottom plate, feed mechanism, the storage tank bottom is installed with feed mechanism, feed mechanism can add material equally, the accurate equal addition of material is realized, effectively avoids the production fluctuation, quality defect or raw material waste caused by uneven feeding, for stable process flow, improve product consistency and optimize resource utilization rate provide reliable guarantee, separation mechanism, the shunt tank inside is installed with separation mechanism, separation mechanism can gas-liquid separation avoid the gas-liquid two item flow deflection, in heating furnace internal heating uneven and produce local hot spot coking;The utility model improves the use efficiency of device by the cooperation of feed mechanism and separation mechanism.

Description

Technical Field

[0001] This utility model relates to the field of petrochemical technology, specifically to a pre-flash heating fractional feeding device. Background Technology

[0002] In the petrochemical and coal chemical industries both domestically and internationally, the oil produced by hydrotreating reactions needs to be separated into different components through a fractionation system. The heavier hot high-grade oil and hot low-grade oil, and the lighter cold high-grade oil and cold low-grade oil, all need to be heated by heat exchange with the high-temperature materials in the system before entering the atmospheric and vacuum distillation tower feed heater to reach the required temperature. However, due to the presence of hydrotreating reactions, especially cracking reactions, a large amount of light components are produced, including gasoline, naphtha, LPG, and C1-C2 dry gas components. These components, after being heated in the heat exchanger, have already reached the energy temperature that can be separated in the atmospheric distillation tower. Further heating in the atmospheric distillation heater poses risks of product cracking, coking, and deterioration; risks of gas-liquid two-phase flow deviation or pipeline vibration; and increased energy consumption due to reheating, resulting in waste. Furthermore, existing feeding devices lack effective control when adding materials, making it difficult to accurately determine the amount of material added.

[0003] Therefore, we propose a pre-flash heating fractional feeding device. Utility Model Content

[0004] The purpose of this invention is to provide a pre-flash heating fractional feeding device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pre-flash heating fractional feeding device, comprising:

[0006] A storage box, with a diversion tank on the outside of the storage box, and support plates symmetrically and fixedly connected to the bottom of the storage box, and a bottom plate fixedly connected to the bottom of the support plates;

[0007] The storage tank is equipped with a feeding mechanism, which includes an extension tube. The storage tank is fixedly connected to the extension tube. A metering cylinder is installed inside the storage tank, and a discharge tube is fixedly connected to the bottom of the metering cylinder.

[0008] A separation mechanism is installed inside the diversion tank. The separation mechanism includes a first separation plate, which is fixedly connected inside the diversion tank, and a second diversion plate is fixedly connected inside the diversion tank.

[0009] Preferably, the feeding mechanism further includes a flow port, a flow port is provided on the outer side of the discharge pipe, a transport pipe is fixedly connected to the outer side of the extension pipe, a base is fixedly connected to the bottom of the metering cylinder, and a spring is installed on the outer side of the metering cylinder, with both ends of the spring fixedly connected to the extension pipe and the base respectively. The base is lifted upward by the squeezing force, thereby driving the discharge pipe to lift upward as well. When the discharge pipe moves upward, it continues until the flow port on the outer side is aligned with the transport pipe, thereby transporting the material to the distribution tank through the transport pipe. When it continues to rotate, the squeezing plate releases the squeezing of the base, allowing the metering cylinder and discharge pipe to return to their original positions, and the metering cylinder replenishes the material in the storage tank again.

[0010] Preferably, rotating rods are symmetrically mounted between the two support plates. A driven gear is fixedly connected to the outer side of one rotating rod, and a driving gear is fixedly connected to the outer side of the other rotating rod. The driving gear and the driven gear are meshed together. A rotating motor is mounted at one end of one rotating rod, and the output end of the rotating motor is fixedly connected to the rotating rod. When the rotating motor is started, it drives the rotating rod to rotate. The rotation of the rotating rod drives the driving gear fixedly connected to the outer side to rotate. Since the driving gear and the driven gear are meshed together, when the driving gear rotates, it drives the driven gear to rotate as well. The rotation of the driven gear drives the extrusion disc mounted on the outer side to rotate, and the rotation of the extrusion disc extrudes the chassis.

[0011] Preferably, an extrusion disc is fixedly connected to the outer side of the center of one of the rotating rods, and the rotating rod passes through the interior of the extrusion disc and is located near the edge of the extrusion disc.

[0012] Preferably, the separation mechanism further includes a demister screen. A demister screen is installed on the top of the distribution tank, an exhaust pipe is fixedly connected to the top of the distribution tank, and a discharge pipe is installed on the outside of the distribution tank. Liquid materials flow to the bottom of the distribution tank through the action of the first separation plate, while gas undergoes preliminary filtration through a double-layered second distribution plate to remove liquid droplets. After passing through the demister screen, it is further filtered using smaller perforations.

[0013] Preferably, a baffle is fixedly connected inside the diversion tank. A drive motor is installed at the bottom of the baffle, and a stirring rod is installed at the top of the baffle. The output end of the drive motor passes through the inside of the baffle and is fixedly connected to the stirring rod. A stirring support plate is fixedly connected to the outside of the stirring rod. When the drive motor is started, it drives the stirring rod and the stirring support plate to rotate together, stirring the liquid to prevent it from becoming viscous and solidifying.

[0014] Preferably, a control panel is installed on the outside of the storage box, and both the rotating motor and the drive motor are electrically controlled and connected by the control panel.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] By combining the extension tube, metering cylinder, discharge tube, flow port, transport tube and chassis, materials can be added in equal amounts, achieving precise and equal addition of materials. This effectively avoids production fluctuations, quality defects or raw material waste caused by uneven feeding, and provides a reliable guarantee for stabilizing the process flow, improving product consistency and optimizing resource utilization.

[0017] The combination of the first separation plate, the second diversion plate, the demister, the exhaust pipe, and the discharge pipe can separate the gas and liquid, avoiding the deviation of the two flows and the uneven heating inside the heating furnace that would cause local hot spots and coking. This eliminates the huge production risks caused by this, such as product deterioration, increased heat transfer resistance of the furnace tube, increased conveying pressure, and coking on the inner wall of the furnace tube. Attached Figure Description

[0018] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0019] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0020] Figure 3 This is one of the partial structural schematic diagrams of this utility model;

[0021] Figure 4 This is the second partial structural schematic diagram of this utility model.

[0022] In the diagram: 1. Storage tank; 2. Diverter tank; 3. Support plate; 4. Base plate; 5. Extension pipe; 6. Metering cylinder; 7. Discharge pipe; 8. Flow port; 9. Transport pipe; 10. Chassis; 11. Spring; 12. Rotating rod; 13. Driven gear; 14. Drive gear; 15. Rotating motor; 16. Extrusion disc; 17. First separation plate; 18. Second diverter plate; 19. Defogging screen; 20. Exhaust pipe; 21. Discharge pipe; 22. Baffle plate; 23. Drive motor; 24. Stirring rod; 25. Stirring support plate; 26. Control panel. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-4 A pre-flash heating fractional feeding device, comprising:

[0025] Storage box 1, with a diversion tank 2 on the outside of the storage box 1, and a support plate 3 symmetrically fixedly connected to the bottom of the storage box 1, and a bottom plate 4 fixedly connected to the bottom of the support plate 3;

[0026] The storage box 1 is equipped with a feeding mechanism, which includes an extension tube 5. The storage box 1 is fixedly connected to the extension tube 5. The storage box 1 is equipped with a metering cylinder 6. The bottom of the metering cylinder 6 is fixedly connected to a discharge pipe 7.

[0027] A separation mechanism is installed inside the diversion tank 2. The separation mechanism includes a first separation plate 17, which is fixedly connected inside the diversion tank 2, and a second diversion plate 18 is fixedly connected inside the diversion tank 2.

[0028] Please see Figure 1-4 The feeding mechanism also includes a flow port 8. The discharge pipe 7 has a flow port 8 on its outer side. The extension pipe 5 is fixedly connected to a transport pipe 9 on its outer side. The bottom of the metering cylinder 6 is fixedly connected to a base plate 10. A spring 11 is installed on the outer side of the metering cylinder 6, and the two ends of the spring 11 are fixedly connected to the extension pipe 5 and the base plate 10, respectively. The base plate 10 is lifted upward by the squeezing force, thereby driving the discharge pipe 7 to lift upward as well. When the discharge pipe 7 moves upward, it continues until the flow port 8 on its outer side is aligned with the transport pipe 9, thereby transporting the material to the distribution tank 2 through the transport pipe 9. When it continues to rotate, the squeezing plate 16 releases the squeezing of the base plate 10, allowing the metering cylinder 6 and the discharge pipe 7 to return to their original positions. The metering cylinder 6 then replenishes the material in the storage tank 1 again.

[0029] Please see Figure 1-4 Two rotating rods 12 are symmetrically mounted between the two support plates 3. A driven gear 13 is fixedly connected to the outer side of one rotating rod 12, and a driving gear 14 is fixedly connected to the outer side of the other rotating rod 12. The driving gear 14 and the driven gear 13 are meshed together. A rotating motor 15 is mounted on one end of one rotating rod 12, and the output end of the rotating motor 15 is fixedly connected to the rotating rod 12. When the rotating motor 15 is started, it drives the rotating rod 12 to rotate. The rotation of the rotating rod 12 drives the driving gear 14 fixedly connected to the outer side to rotate. Since the driving gear 14 and the driven gear 13 are meshed together, when the driving gear 14 rotates, it drives the driven gear 13 to rotate together. The rotation of the driven gear 13 drives the extrusion disc 16 mounted on the outer side to rotate. The rotation of the extrusion disc 16 extrudes the chassis 10.

[0030] Please see Figure 1-4 An extrusion disc 16 is fixedly connected to the outer side of the center of one of the rotating rods 12, and the rotating rod 12 passes through the interior of the extrusion disc 16 and is located near the edge of the extrusion disc 16.

[0031] Please see Figure 1-4The separation mechanism also includes a demister 19. A demister 19 is installed on the top of the diversion tank 2, and an exhaust pipe 20 is fixedly connected to the top of the diversion tank 2. A discharge pipe 21 is installed on the outside of the diversion tank 2. Liquid materials flow to the bottom of the diversion tank 2 through the action of the first separation plate 17, while gas undergoes preliminary filtration through a double-layered second diversion plate 18 to remove liquid droplets. After passing through the demister 19, it is further filtered using smaller perforations.

[0032] Please see Figure 1-4 The diversion tank 2 has a baffle 22 fixedly connected inside. A drive motor 23 is installed at the bottom of the baffle 22, and a stirring rod 24 is installed at the top of the baffle 22. The output end of the drive motor 23 passes through the inside of the baffle 22 and is fixedly connected to the stirring rod 24. A stirring support plate 25 is fixedly connected to the outside of the stirring rod 24. When the drive motor 23 is started, it drives the stirring rod 24 and the stirring support plate 25 to rotate together, stirring the liquid to prevent it from becoming viscous and solidifying.

[0033] Please see Figure 1-4 The storage box 1 is equipped with a control panel 26 on its outside, and the rotating motor 15 and the drive motor 23 are both electrically controlled and connected by the control panel 26.

[0034] Working principle: When this device is needed, first fill the storage box 1 to the same level as the metering cylinder 6. Then start the rotating motor 15. The rotating motor 15 drives the rotating rod 12 to rotate, which in turn drives the externally fixed drive gear 14 to rotate. Since the drive gear 14 is meshed with the driven gear 13, when the drive gear 14 rotates, it drives the driven gear 13 to rotate as well. The rotation of the driven gear 13 drives the externally mounted extrusion disc 16 to rotate. The rotation of the extrusion disc 16 extrudes the base plate 10, causing the base plate 10 to lift upwards under the extrusion force. This lifts the discharge pipe 7 upwards as well. When the discharge pipe 7 moves upwards, it continues until the externally opened flow port 8 aligns with the transport pipe 9, thus transporting the material through the transport pipe 9 to the desired location. Inside the diversion tank 2, as rotation continues, the squeezing plate 16 releases the squeezing of the base plate 10, allowing the metering cylinder 6 and the discharge pipe 7 to return to their original positions. The metering cylinder 6 then replenishes the material in the storage tank 1. When the material arrives in the diversion tank 2, the liquid material flows to the bottom of the diversion tank 2 through the action of the first separation plate 17, and the drive motor 23 is started. The operation of the drive motor 23 drives the stirring rod 24 and the stirring support plate 25 to rotate together, stirring the liquid to prevent it from becoming viscous and solidifying. The gas undergoes preliminary filtration through the double-layer second diversion plate 18, filtering out the liquid droplets in the gas. After passing through the demister screen 19, it is filtered through smaller through holes. After filtration, it is discharged into the distillation tower through the exhaust pipe 20, while the liquid enters the heating furnace.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] 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 pre-flash heating fractional feeding device, characterized in that, include: Storage box (1), a diversion tank (2) is provided on the outside of the storage box (1), a support plate (3) is symmetrically fixedly connected to the bottom of the storage box (1), and a bottom plate (4) is fixedly connected to the bottom of the support plate (3). Feeding mechanism, the bottom of the storage box (1) is equipped with a feeding mechanism, the feeding mechanism includes an extension tube (5), the bottom of the storage box (1) is fixedly connected to the extension tube (5), the storage box (1) is equipped with a metering cylinder (6), the bottom of the metering cylinder (6) is fixedly connected to a discharge pipe (7). The separation mechanism is installed inside the diversion tank (2). The separation mechanism includes a first separation plate (17). The first separation plate (17) is fixedly connected inside the diversion tank (2). The second diversion plate (18) is fixedly connected inside the diversion tank (2).

2. The pre-flash heating fractional feeding device according to claim 1, characterized in that: The feeding mechanism also includes a flow port (8), the discharge pipe (7) has a flow port (8) on the outside, the extension pipe (5) is fixedly connected to a transport pipe (9), the bottom of the metering cylinder (6) is fixedly connected to a chassis (10), the outside of the metering cylinder (6) is equipped with a spring (11), and the two ends of the spring (11) are fixedly connected to the extension pipe (5) and the chassis (10) respectively.

3. The pre-flash heating fractional feeding device according to claim 1, characterized in that: Rotating rods (12) are symmetrically mounted between the two support plates (3). A driven gear (13) is fixedly connected to the outside of one of the rotating rods (12), and a driving gear (14) is fixedly connected to the outside of the other rotating rod (12). The driving gear (14) meshes with the driven gear (13). A rotating motor (15) is mounted at one end of one of the rotating rods (12), and the output end of the rotating motor (15) is fixedly connected to the rotating rod (12).

4. The pre-flash heating fractional feeding device according to claim 3, characterized in that: An extrusion disc (16) is fixedly connected to the outer side of the center of one of the rotating rods (12), and the rotating rod (12) passes through the interior of the extrusion disc (16) and is located near the edge of the extrusion disc (16).

5. The pre-flash heating fractional feeding device according to claim 1, characterized in that: The separation mechanism also includes a demister (19), the top of the diversion tank (2) is equipped with a demister (19), the top of the diversion tank (2) is fixedly connected with an exhaust pipe (20), and the outside of the diversion tank (2) is equipped with a discharge pipe (21).

6. The pre-flash heating fractional feeding device according to claim 1, characterized in that: The diversion tank (2) is fixedly connected to a partition (22). A drive motor (23) is installed at the bottom of the partition (22). A stirring rod (24) is installed at the top of the partition (22). The output end of the drive motor (23) passes through the interior of the partition (22) and is fixedly connected to the stirring rod (24). A stirring support plate (25) is fixedly connected to the outside of the stirring rod (24).

7. The pre-flash heating fractional feeding device according to claim 1, characterized in that: The storage box (1) is equipped with a control panel (26) on the outside, and the rotating motor (15) and the drive motor (23) are both electrically controlled and connected by the control panel (26).

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