Aromatic hydrocarbon device waste heat recycling device

Abstract

The utility model discloses a waste heat recycling device of an aromatic hydrocarbon device, which relates to the technical field of oil refining and chemical engineering and particularly comprises a device body, a top cover is fixedly connected to the top of the device body, a steam inlet pipe is fixed to the top of an inner cavity of the top cover, and a rotating plate is movably connected to the bottom of the inner cavity of the top cover. A first partition plate and a second partition plate are fixed to an inner cavity of the device body and divide the inner cavity of the device body into a first heat exchange cavity, a second heat exchange cavity and a condensation water temporary storage cavity from top to bottom, and a rotating motor and a water energy power generation mechanism are arranged at the bottom of the device body. According to the waste heat recycling device for the aromatic hydrocarbon device, the steam and the condensed water are used for heating the aromatic hydrocarbon production raw materials, so that heat in the steam and the condensed water is recycled, the initial temperature of the aromatic hydrocarbon production raw materials is increased, and the energy loss of the device during working can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil refining and chemical engineering, in particular to a waste heat recovery and utilization device for an aromatics device. Background Art

[0002] Aromatics equipment includes reforming, aromatics extraction and paraxylene equipment. The main products include aromatics products such as benzene, toluene and paraxylene. In the production process of aromatics, distillation technology is mainly used to separate components. In the production process of aromatics, a large number of distillation towers are used. On the one hand, the bottom of the distillation tower needs to be heated to make the substances to be separated absorb heat and evaporate. On the other hand, according to the different boiling points of different substances, they need to be cooled and separated. Therefore, in the entire production process of aromatics, there is a large amount of low-temperature waste heat that can be used. In the prior art, some patents on waste heat recovery and utilization devices of aromatics devices are disclosed. For example, the authorized patent with application number CN202121626422.1 discloses a waste heat recovery and utilization system of an aromatics device. When in use, this scheme utilizes the heat in the steam to heat the external container to achieve the purpose of steam heat recovery. However, a large amount of condensate will be generated after the steam heat is recovered, and the condensate temperature is generally high. When the above scheme is used, the condensate will be directly discharged through the exhaust valve, and the condensate and this part of the heat in the condensate are not fully utilized, which reduces the efficiency of waste heat recovery and utilization of the aromatics device. In addition, during the flow of steam in the recovery box, the heat exchange rate between the steam away from the external container and the external container is slow, resulting in the heat in the steam not being fully recovered, affecting the steam heat recovery efficiency. Based on this, the present application proposes a waste heat recovery and utilization device for an aromatics device. Utility Model Content

[0003] The utility model provides a waste heat recovery and utilization device for an aromatics device, which solves the problem in the above background technology that the heat in the steam is not fully recovered and the heat in the generated condensate and the condensate are not fully utilized.

[0004] The utility model provides the following technical solution: a waste heat recovery and utilization device for an aromatic hydrocarbon device, comprising a device body, a top cover fixedly connected to the top of the device body, a steam inlet pipe fixed to the top of the inner cavity of the top cover, a rotating plate movably connected to the bottom of the inner cavity of the top cover, a partition plate 1 and a partition plate 2 fixed to the inner cavity of the device body, the partition plate 1 and the partition plate 2 both divide the inner cavity of the device body from top to bottom into a first heat exchange cavity, a second heat exchange cavity and a condensate temporary storage cavity, one side of the top of the first heat exchange cavity and the second heat exchange cavity are both provided with a raw material inlet pipe, and the bottom of the first heat exchange cavity and the second heat exchange cavity are A raw material discharge pipe is provided on one side, the partition plate 1 is connected to the rotating plate through the first heat exchange tube, the outer ring of the partition plate 1 is evenly provided with through holes, the bottom of the partition plate 1 is provided with a sealing ring adapted to the through holes, the partition plate 1 is connected to the partition plate 2 through the second heat exchange tube, the top of the partition plate 2 is movably connected with a push plate, the push plate is movably connected to the second heat exchange tube, a rotating motor and a hydropower generation mechanism are provided at the bottom of the device body, the output shaft end of the rotating motor is connected to the bottom of the partition plate 2 through a rotating rod, and the liquid inlet end of the hydropower generation mechanism is connected to the inner cavity of the condensate storage cavity through a discharge pipe.

[0005] Preferably, one end of the raw material inlet pipe and one end of the raw material outlet pipe are both provided with an electric ball valve 1, one end of the liquid discharge pipe is provided with an electric ball valve 2, and one end of the steam inlet pipe is provided with an electric ball valve 3.

[0006] Preferably, a heat exchange fin is evenly and fixedly connected to the outer surface of the first heat exchange tube, and one end of the heat exchange fin extends to the middle of the inner cavity of the first heat exchange tube.

[0007] Preferably, a temperature detector is fixed on the top of the partition plate 1, a groove adapted to the sealing ring is provided at the bottom of the partition plate 1, through holes adapted to the through holes are evenly provided on the outer ring of the sealing ring, a rotating motor is fixedly connected to the middle of the top of the partition plate 1, and the end of the output shaft of the rotating motor is fixedly connected to the middle of the sealing ring.

[0008] Preferably, a receiving groove adapted to the push plate is provided on the top of the second partition plate, an electric telescopic rod is fixedly connected to the top of the second partition plate, and the top of the electric telescopic rod is fixedly connected to the bottom of the push plate.

[0009] Preferably, the inner cavity of the first heat exchange tube is communicated with the inner cavity of the top cover, the inner cavity of the first heat exchange tube is communicated with the inner cavity of the second heat exchange tube, and the inner cavity of the second heat exchange tube is communicated with the inner cavity of the condensate temporary storage cavity.

[0010] Preferably, the hydropower generation mechanism includes a turbine, a generator and a battery fixedly connected to the bottom of the device body, a gear one is fixed to one end of the rotating shaft of the turbine, a gear two is fixed to the end of the power input shaft of the generator, the gear one is meshed with the gear two, the generator is connected to the battery through a wire, and the drain pipe is connected to the liquid inlet end of the turbine.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The waste heat recovery and utilization device of the aromatics device realizes the recovery of heat in steam and condensate by heating the aromatics production raw materials with steam and condensate, thereby increasing the initial temperature of the aromatics production raw materials and reducing the energy loss of the device during operation. In addition, the potential energy of the falling condensate is converted into electrical energy by a hydropower generation mechanism for use by the electrical components in the device, thereby further reducing the energy loss of the aromatics device during operation.

[0013] 2. The waste heat recovery and utilization device of the aromatics device can convert the potential energy of condensed water into electrical energy through the setting of the condensed water temporary storage chamber and the hydropower generation mechanism, thereby reducing the energy loss when the device is used and saving resources; through the setting of the rotating motor, the first heat exchange tube and the second heat exchange tube can stir the raw materials around them so that the raw materials can be heated evenly, which is convenient for the recovery of heat in the steam; through the setting of the heat exchange fins, the heat exchange area is increased, the steam has a turbulent effect, the heat transfer is enhanced, and the steam heat recovery efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of the structure of the utility model;

[0015] Figure 2 The utility model structure Figure 1 Bottom schematic diagram;

[0016] Figure 3 The utility model structure Figure 1 Internal schematic diagram;

[0017] Figure 4 The utility model structure Figure 3 Schematic diagram looking up;

[0018] Figure 5 This is an explosion diagram of the second partition plate and the push plate of the utility model structure;

[0019] Figure 6 This is a schematic diagram of the first heat exchange tube of the utility model structure;

[0020] Figure 7 It is a schematic diagram of the explosion of the partition plate 1 and the sealing ring of the utility model structure.

[0021] In the figure: 1. device body; 2. top cover; 3. steam inlet pipe; 4. raw material inlet pipe; 5. raw material discharge pipe; 6. electric ball valve 1; 7. drain pipe; 8. turbine; 9. gear 1; 10. gear 2; 11. battery; 12. generator; 13. temperature detector; 14. electric ball valve 2; 15. partition plate 1; 16. rotating plate; 17. first heat exchange tube; 18. second heat exchange tube; 19. push plate; 20. partition plate 2; 21. rotating rod; 22. rotating motor; 25. sealing ring; 26. connecting hole; 27. electric telescopic rod; 28. heat exchange fins; 29. ​​rotating motor. DETAILED DESCRIPTION

[0022] 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.

[0023] The utility model provides a waste heat recovery and utilization device for an aromatic hydrocarbon device, comprising a device body 1,

[0024] The inner cavity of the device body 1 is fixed with a partition plate 15 and a partition plate 20, which divide the inner cavity of the device body 1 from top to bottom into a first heat exchange cavity, a second heat exchange cavity and a condensate temporary storage cavity. A raw material inlet pipe 4 is provided on one side of the top of both the first heat exchange cavity and the second heat exchange cavity, and a raw material discharge pipe 5 is provided on one side of the bottom of both the first heat exchange cavity and the second heat exchange cavity. Through the setting of the raw material inlet pipe 4, the raw material to be heated can enter the first heat exchange cavity or the second heat exchange cavity, and through the setting of the raw material discharge pipe 5, the heated raw material can be discharged through the raw material discharge pipe 5. An electric ball valve 1 6 is provided at one end of the raw material inlet pipe 4 and one end of the raw material discharge pipe 5.

[0025] The outer circle of the partition plate 15 is evenly provided with through holes, and the bottom of the partition plate 15 is provided with a groove. A sealing ring 25 is movably connected in the inner cavity of the groove. The outer circle of the sealing ring 25 is evenly provided with through holes adapted to the through holes, and the through holes can overlap with the through holes. When the through holes overlap with the through holes, the inner cavity of the first heat exchange chamber and the inner cavity of the second heat exchange chamber are in a connected state, and the raw material in the inner cavity of the first heat exchange chamber can enter the second heat exchange chamber, and the raw material in the second heat exchange chamber can enter the first heat exchange chamber.

[0026] A rotating motor 29 is fixedly connected to the middle part of the top of the partition plate 15, and the end of the output shaft of the rotating motor 29 is fixedly connected to the middle part of the sealing ring 25 through a reducer. Through the setting of the rotating motor 29, the rotation of the rotating motor 29 can drive the sealing ring 25 fixedly connected thereto to rotate. When the sealing ring 25 rotates, the through hole and the through hole can overlap or stagger.

[0027] The top of the partition plate 15 is evenly fixedly connected with the first heat exchange tube 17, the top of the device body 1 is fixedly connected with the top cover 2, the top of the inner cavity of the top cover 2 is fixedly connected with the steam inlet tube 3, one end of the steam inlet tube 3 is provided with an electric ball valve 3, the bottom of the inner cavity of the top cover 2 is movably connected with a rotating plate 16, the rotating plate 16 is evenly provided with holes, the top of the first heat exchange tube 17 is fixedly connected with the bottom of the rotating plate 16, and under the action of the holes, the inner cavity of the top cover 2 and the inner cavity of the first heat exchange tube 17 are in a connected state, the steam generated in the aromatic production process flowing in the steam inlet tube 3 can enter the first heat exchange tube 17, the steam can exchange heat with the aromatic production raw materials around the first heat exchange tube 17 through the first heat exchange tube 17, the heat in the steam is recycled, and the initial temperature of the raw materials is increased, which can reduce the energy loss of the aromatic device.

[0028] The outer surface of the first heat exchange tube 17 is evenly and fixedly connected with a heat exchange fin 28, and one end of the heat exchange fin 28 extends to the middle of the inner cavity of the first heat exchange tube 17. The heat exchange area of ​​the first heat exchange tube 17 is increased by the arrangement of the heat exchange fin 28, and the heat exchange fin 28 has a disturbing effect on the steam, increases the turbulence of the steam, and has the effect of enhancing heat transfer, thereby improving the steam heat recovery efficiency.

[0029] A temperature detector 13 is fixed on the top of the partition plate 15. The temperature detector 13 can detect the temperature of the raw materials in the first heat exchange chamber, so that the staff can take out the heated raw materials in time.

[0030] Partition plate 15 and partition plate 20 are connected through a second heat exchange tube 18. One end of the second heat exchange tube 18 is fixedly connected to partition plate 15, and the other end of the second heat exchange tube 18 is fixedly connected to partition plate 20. A guide hole is provided on partition plate 15. Through the setting of the guide hole, the inner cavity of the first heat exchange tube 17 and the inner cavity of the second heat exchange tube 18 are in a connected state. Condensate can enter the inner cavity of the second heat exchange tube 18 under the action of gravity, and the condensate exchanges heat with the raw materials around the second heat exchange tube 18 during the movement, thereby increasing the temperature of the raw materials.

[0031] A receiving groove is provided at the top of the partition plate 20, and a push plate 19 is placed in the inner cavity of the receiving groove. An electric telescopic rod 27 is fixedly connected to the top of the partition plate 20, and the top of the electric telescopic rod 27 is fixedly connected to the bottom of the push plate 19. The push plate 19 is movably connected to the second heat exchange tube 18. Through the setting of the electric telescopic rod 27, the extension and retraction of the electric telescopic rod 27 can change the position of the push plate 19. When the push plate 19 moves upward, the push plate 19 can squeeze the raw material in the second heat exchange cavity, so that the raw material in the second heat exchange cavity can enter the first heat exchange cavity.

[0032] A rotating motor 22 and a hydropower generation mechanism are provided at the bottom of the device body 1. A rotating rod 21 is fixedly connected to the end of the output shaft of the rotating motor 22. The other end of the rotating rod 21 is fixedly connected to the bottom of the partition plate 20. Through the setting of the rotating motor 22, the rotation of the rotating motor 22 can drive the rotating rod 21 to rotate, the rotating rod 21 drives the partition plate 20 to rotate, the partition plate 20 drives the second heat exchange tube 18 to rotate, the second heat exchange tube 18 drives the first heat exchange tube 17 to rotate, and the first heat exchange tube 17 and the second heat exchange tube 18 can both stir the materials around them so that the materials can be heated evenly.

[0033] In some embodiments of the present application, the hydropower generation mechanism includes a turbine 8, a generator 12 and a battery 11 fixedly connected to the bottom of the device body 1, a gear 1 9 is fixed to one end of the rotating shaft of the turbine 8, a gear 2 10 is fixed to the end of the power input shaft of the generator 12, the gear 1 9 is meshed with the gear 2 10, the generator 12 is connected to the battery 11 through a wire, the liquid inlet end of the turbine 8 is connected to the drain pipe 7, the other end of the drain pipe 7 is fixedly connected to the bottom of the condensate storage chamber, and an electric ball valve 2 14 is provided at one end of the drain pipe 7. When the inner cavity of the drain pipe 7 is in an open state, the condensate in the condensate temporary storage cavity can enter the turbine 8 under the action of gravity, and the condensate impacts the turbine blades in the turbine 8, so that the turbine blades can rotate, and the turbine blades drive the rotating shaft to rotate, and the rotating shaft drives the gear 1 9 to rotate, and the gear 1 9 drives the power input shaft of the generator 12 to rotate through the gear 2 10 meshing therewith, and the generator 12 can generate electricity, and the generated electric energy is stored in the battery 11. The electric energy in the battery 11 can be provided to electrical components such as the electric ball valve 1, the electric ball valve 2, the rotating motor, the electric telescopic rod and the rotating motor in the device, thereby reducing the energy loss of the device and saving resources.

[0034] The electrical components involved in this application are all prior art, and technicians in this field are familiar with their connection methods. Through these technicians, all the electrical components in this application are connected to their compatible power supplies through wires, and according to the actual situation, a suitable controller is selected to meet the control requirements. The specific connection and control sequence are described below. The electrical connection is completed in a sequential working order, and the detailed connection means are well known in the art. The following mainly introduces the working principle and process, and no further explanation of the electrical control is given.

[0035] In summary: when the waste heat recovery and utilization device of the aromatics device is in use, the steam pipeline of the aromatics device is connected to the top of the steam inlet pipe 3, and the staff injects the raw materials for producing aromatics into the first heat exchange chamber. Under the action of gravity, the raw materials in the first heat exchange chamber enter the second heat exchange chamber through the overlapping through holes and through holes. After the loading is completed, the rotating motor 29 drives the sealing ring 25 to rotate, so that the through holes and the through holes are in a staggered state, and the electric ball valve three is opened. The steam generated when the aromatics device is working can enter the first heat exchange tube 17 along the steam inlet pipe 3. During the flow of steam in the first heat exchange tube 17, the steam and the raw materials can exchange heat to increase the initial temperature of the raw materials, so that the heat in the steam can be recovered. The condensed water generated after the steam heat exchange flows along the inner wall of the second heat exchange tube 18 under the action of gravity, and during the flow of the condensed water, the condensed water and the raw materials can exchange heat, so that the heat in the condensed water can be recovered, and the condensed water after heat exchange falls into the condensed water temporary storage chamber. The temperature detector 13 can detect the temperature of the raw materials in the first heat exchange chamber in real time. After the temperature of the raw materials in the first heat exchange chamber meets the requirements, the raw materials in the first heat exchange chamber are discharged through the raw material discharge pipe 5 at the bottom of the first heat exchange chamber. After the raw materials in the first heat exchange chamber are discharged, the through hole and the through hole are in an overlapping state, and the electric telescopic rod 27 drives the push plate 19 to move upward, and the push plate 19 squeezes the raw materials in the second heat exchange chamber into the first heat exchange chamber for continued heating. After the sealing ring 25 is reset, the push plate 19 moves downward until the push plate 19 is reset, and the raw materials to be heated enter the second heat exchange chamber through the raw material inlet pipe 4 at the top of the second heat exchange chamber.

[0036] During the use of the device, the rotating motor 22 and the electric ball valve 14 both work intermittently. The working frequencies of the rotating motor 22 and the electric ball valve 14 can be set according to needs, and there is no restriction here. When the rotating motor 22 works, it can drive the first heat exchange tube 17 and the second heat exchange tube 18 to rotate. The first heat exchange tube 17 and the second heat exchange tube 18 stir the materials around them to facilitate the recovery of heat in the steam; when the electric ball valve 14 works so that the inner cavity of the drain pipe 7 is in an open state, the condensed water enters the turbine 8 along the drain pipe 7 under the action of gravity. In the inner cavity, condensed water impacts the turbine blades in the turbine 8, so that the turbine blades can rotate, and the turbine blades drive the rotating shaft to rotate, and the rotating shaft drives the gear 1 9 to rotate, and the gear 1 9 drives the power input shaft of the generator 12 to rotate through the gear 2 10 meshing therewith, and the generator 12 can generate electricity, and the generated electric energy is stored by the battery 11. The electric energy in the battery 11 can be provided to the electric ball valve 1, the electric ball valve 2, the rotating motor, the electric telescopic rod and the rotating motor and other electrical components in the device, thereby reducing the energy loss of the device and saving resources.

[0037] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art and will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A waste heat recovery device for an aromatics device, comprising a device body (1), characterized in that: The top of the device body (1) is fixedly connected to a top cover (2), the top of the inner cavity of the top cover (2) is fixedly provided with a steam inlet pipe (3), the bottom of the inner cavity of the top cover (2) is movably connected to a rotating plate (16), the inner cavity of the device body (1) is fixedly provided with a partition plate 1 (15) and a partition plate 2 (20), the partition plate 1 (15) and the partition plate 2 (20) divide the inner cavity of the device body (1) from top to bottom into a first heat exchange cavity, a second heat exchange cavity and a condensate temporary storage cavity, the first heat exchange cavity and the second heat exchange cavity are both provided with a raw material inlet pipe (4) on one side of the top end, and the first heat exchange cavity and the second heat exchange cavity are both provided with a raw material discharge pipe (5) on one side of the bottom end; The partition plate 1 (15) is connected to the rotating plate (16) via a first heat exchange tube (17); the outer ring of the partition plate 1 (15) is evenly provided with through holes; the bottom of the partition plate 1 (15) is provided with a sealing ring (25) adapted to the through holes; the partition plate 1 (15) is connected to the partition plate 2 (20) via a second heat exchange tube (18); the top of the partition plate 2 (20) is movably connected with a push plate (19); the push plate (19) is movably connected to the second heat exchange tube (18); a rotating motor (22) and a hydropower generation mechanism are provided at the bottom of the device body (1); the output shaft end of the rotating motor (22) is connected to the bottom of the partition plate 2 (20) via a rotating rod (21); and the liquid inlet end of the hydropower generation mechanism is connected to the inner cavity of the condensate temporary storage cavity via a discharge pipe (7).

2. The waste heat recovery device of an aromatics device according to claim 1, characterized in that: One end of the raw material inlet pipe (4) and one end of the raw material outlet pipe (5) are both provided with an electric ball valve 1 (6), one end of the liquid discharge pipe (7) is provided with an electric ball valve 2 (14), and one end of the steam inlet pipe (3) is provided with an electric ball valve 3.

3. The waste heat recovery device of an aromatics device according to claim 1, characterized in that: The outer surface of the first heat exchange tube (17) is evenly and fixedly connected with a heat exchange fin (28), and one end of the heat exchange fin (28) extends to the middle of the inner cavity of the first heat exchange tube (17).

4. The waste heat recovery device of an aromatics device according to claim 1, characterized in that: A temperature detector (13) is fixed on the top of the partition plate 1 (15), a groove adapted to the sealing ring (25) is provided at the bottom of the partition plate 1 (15), through holes adapted to the through holes are evenly arranged on the outer ring of the sealing ring (25), a rotating motor (29) is fixedly connected to the middle of the top of the partition plate 1 (15), and the end of the output shaft of the rotating motor (29) is fixedly connected to the middle of the sealing ring (25).

5. The waste heat recovery device of an aromatics device according to claim 1, characterized in that: The top of the second partition plate (20) is provided with a receiving groove adapted to the push plate (19), and the top of the second partition plate (20) is fixedly connected to an electric telescopic rod (27), and the top of the electric telescopic rod (27) is fixedly connected to the bottom of the push plate (19).

6. The waste heat recovery device of an aromatics device according to claim 1, characterized in that: The inner cavity of the first heat exchange tube (17) is connected to the inner cavity of the top cover (2), the inner cavity of the first heat exchange tube (17) is connected to the inner cavity of the second heat exchange tube (18), and the inner cavity of the second heat exchange tube (18) is connected to the inner cavity of the condensate temporary storage cavity.

7. The waste heat recovery device of an aromatics device according to claim 1, characterized in that: The hydropower generation mechanism comprises a turbine (8) fixedly connected to the bottom of the device body (1), a generator (12) and a storage battery (11); a gear 1 (9) is fixed to one end of the rotating shaft of the turbine (8); a gear 2 (10) is fixed to the end of the power input shaft of the generator (12); the gear 1 (9) is meshed with the gear 2 (10); the generator (12) is connected to the storage battery (11) via a wire; and the discharge pipe (7) is connected to the liquid inlet end of the turbine (8).

Images