Storage device for coal ethylene glycol

Abstract

The utility model is suitable for the technical field of coal ethylene glycol storage, and provides a coal ethylene glycol storage device which comprises an outer storage tank, the upper end of one side of the outer storage tank is fixedly connected with an adsorption box; the internal storage tank is fixedly connected to the inner wall of the external storage tank; the nitrogen inlet pipe is fixedly connected to one side of the top end of the outer storage tank, and a breather valve is fixedly connected to one side of the top end of the outer storage tank. According to the storage device for coal ethylene glycol, the heat exchange pipe is used for guaranteeing the optimal storage temperature of the internal storage tank, nitrogen sealing is achieved through the first one-way exhaust pipe and the nitrogen inlet pipe, balance adjustment of air pressure inside and outside the internal storage tank is achieved through the breather valve, meanwhile, the anti-explosion circulating pump is used for regularly pumping coal ethylene glycol in a circulating and reciprocating mode, and the coal ethylene glycol storage efficiency is improved. And the adsorption box and the activated carbon adsorption plate can be used for adsorbing gas exhausted from the interior of the internal storage tank, a trace amount of ethylene glycol steam in the gas is filtered and adsorbed, and air pollution is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of coal-to-ethylene glycol storage technology, and particularly relates to a storage device for coal-to-ethylene glycol. Background Technology

[0002] Coal-derived ethylene glycol uses syngas (CO+H2) as raw material. Crude ethylene glycol is synthesized by hydrogenation of dimethyl oxalate, and then purified by multi-tower distillation to obtain polyester-grade products. It has strict requirements for storage conditions because ethylene glycol is easily oxidized to form aldehyde impurities (such as formaldehyde and acetaldehyde) under high temperature or oxygen contact, which leads to a decrease in purity and affects downstream polyester production. Therefore, appropriate storage devices are required to properly preserve coal-derived ethylene glycol.

[0003] Chinese patent CN217946317U discloses a storage tank for coal-to-ethylene glycol production. The patent describes a tank comprising an outer tank body containing an inner tank body. The top of the inner tank body is convex upwards in a bucket shape. The outer surface of the inner tank body is fixedly connected to the inner wall of the outer tank body via a connecting plate. A heat insulation layer is provided on the inner wall of the inner tank body. A circulation pipe is arranged around the heat insulation layer and the outer surface of the inner tank body, and a conduit is fixedly connected to the top of the circulation pipe. This invention uses a nitrogen filling component to inject nitrogen into the inner tank body, while simultaneously expelling air from the inner tank body through an exhaust pipe, a transparent air cylinder, and a valve in the exhaust assembly. This allows the air at the top of the inner tank body to be expelled and filled with nitrogen, thereby preventing the oxygen in the air at the top of the inner tank body from reacting with ethylene glycol and preventing the ethylene glycol from oxidizing into polymeric organic acids, which could then deposit and clog the drain valve.

[0004] However, the above scheme does not have a corresponding breathing valve, which makes it inconvenient to balance the pressure inside and outside the storage tank. Even if the existing storage tanks are equipped with breathing valves, the gas discharged contains trace amounts of ethylene glycol vapor, so direct discharge will cause some air pollution and make them inconvenient to use. Therefore, it is necessary to design a storage device for coal-to-ethylene glycol. Utility Model Content

[0005] This invention provides a storage device for coal-to-ethylene glycol production, aiming to solve the problem that some currently used storage devices are inconvenient for filtering and adsorbing exhaust gases.

[0006] This utility model is implemented as follows: a storage device for coal-to-ethylene glycol includes an outer storage tank; a controller fixedly connected to the lower end of one side of the outer storage tank; an adsorption box fixedly connected to the upper end of one side of the outer storage tank; a fixing groove opened on one side of the adsorption box; a sealing plate movably connected to one side of the adsorption box; activated carbon adsorption plates extending into the adsorption box are fixedly connected at equal intervals to one side of the sealing plate; an installation assembly assembled to the upper end of one side of the adsorption box, the installation assembly being used to achieve quick assembly and disassembly of the sealing plate; an inner storage tank fixedly connected to the inner wall of the outer storage tank; a discharge pipe extending to the outside of the outer storage tank fixedly connected to the bottom end of the inner storage tank; a nitrogen inlet pipe fixedly connected to one side of the top of the outer storage tank; the bottom end of the nitrogen inlet pipe extending into the interior of the inner storage tank; and a molecular sieve dryer fixedly connected to the middle position of the top of the outer storage tank. The bottom of the dryer is connected to the top of the inner storage tank. A precision filter is fixedly connected to the top of the molecular sieve dryer, and a feed pipe is fixedly connected to the top of the precision filter. A first one-way exhaust pipe is fixedly connected to one side of the top of the outer storage tank. One end of the first one-way exhaust pipe extends into the inner storage tank, and the other end of the first one-way exhaust pipe is connected to one side of the top of the adsorption box. A breather valve is fixedly connected to one side of the top of the outer storage tank. The input end of the breather valve is connected to the inside of the inner storage tank through a conduit. A second one-way exhaust pipe connected to the top of the adsorption box is fixedly connected to one side of the breather valve. A pressure gauge is fixedly connected to one end of the top of the outer storage tank. A sampling tube is fixedly connected to the top of the outer storage tank on one side of the pressure gauge. A level gauge is fixedly connected to the middle position of the surface of the outer storage tank. A thermometer is fixedly connected to the lower end of the surface of the outer storage tank on one side of the level gauge.

[0007] Preferably, the surface of the inner storage tank is wound with heat exchange tubes, and the upper and lower ends of one side of the surface of the outer storage tank are respectively fixedly connected to a medium outlet pipe and a medium inlet pipe, and one side of the medium outlet pipe and the medium inlet pipe are respectively connected to the upper and lower ends of the heat exchange tubes.

[0008] Preferably, the heat exchange tubes are spirally wound around the surface of the inner storage tank, and the flow direction of the medium inside the heat exchange tubes is from bottom to top.

[0009] Preferably, an explosion-proof circulation pump is fixedly connected to the lower end of the back of the outer storage tank. The input end of the explosion-proof circulation pump is connected to the lower end of the inner storage tank through a conduit, and the output end of the explosion-proof circulation pump is connected to the upper end of the inner storage tank through a conduit.

[0010] Preferably, the sealing plate is convex in shape, and the area of ​​the cross-section on one side of the sealing plate is larger than the area of ​​the cross-section of the opening inside the fixing groove.

[0011] Preferably, a sealing ring is fixedly connected to one side of the surface of the sealing plate, and the sealing ring is in the shape of a U-shape.

[0012] Preferably, the mounting assembly includes: mounting grooves symmetrically opened on the upper end of one side of the adsorption box, with sliding rods fixedly connected to the inner wall of the mounting grooves; sliding blocks slidably connected to the surfaces of the two sliding rods, with mounting springs wound around the surfaces of the sliding rods, and the two ends of the mounting springs being fixedly connected to the top wall of the mounting groove and the top of the sliding blocks, respectively; locking blocks fixedly connected to one side of the bottom of the two sliding blocks, with connecting rods fixedly connected to one side of the two sliding blocks; and locking holes symmetrically opened on the top of the sealing plate.

[0013] Preferably, the bottom end of the card block and the interior of the card hole form an engaging structure, and the top end of the card block and one side of the bottom end of the sliding block form an integral welded structure.

[0014] Preferably, a grounding post is fixedly connected to one side of the bottom of the outer storage tank, and the grounding post can be connected to an external grounding wire to prevent the accumulation of static electricity on the surface of the outer storage tank.

[0015] Preferably, a flow guide hopper is fixedly connected to the inner bottom wall of the inner storage tank, and the flow guide hopper is funnel-shaped.

[0016] Compared with related technologies, the storage device for coal-to-ethylene glycol provided by this utility model has the following advantages:

[0017] 1. Both the outer and inner storage tanks are made of 304 or 316 stainless steel, which has excellent corrosion resistance and can prevent corrosion of ethylene glycol caused by trace amounts of moisture or impurities during long-term storage. The outer storage tank is coated with a reflective coating to prevent localized overheating caused by direct sunlight. A thermometer monitors the internal temperature of the inner storage tank. If the temperature is too high or too low, an external water pump or other equipment can be used to transfer refrigerant or heat transfer medium from the medium inlet pipe to the heat exchange tubes, thereby exchanging heat in the inner storage tank and ensuring optimal storage temperature. Simultaneously, a nitrogen inlet pipe is used to supply nitrogen, achieving a nitrogen seal and preventing air from entering and causing oxidation or moisture absorption. Furthermore, when transferring coal-derived ethylene glycol into the inner storage tank, a precision filter and molecular sieve dryer can be used. The process involves filtration and drying to ensure the purity of coal-derived ethylene glycol. The outer storage tank also features a periodic explosion-proof circulation pump that draws ethylene glycol from the lower part of the inner storage tank and transports it to the upper part, achieving cyclical absorption and preventing stratification or sedimentation. During storage, if pressure imbalance occurs within the inner storage tank, causing air intake, nitrogen can be drawn in through the breather valve to maintain constant pressure. When venting is required, the gas inside the inner storage tank is discharged into the mounting assembly through a second one-way exhaust pipe. At this point, activated carbon adsorption plates adsorb trace amounts of ethylene glycol vapor from the discharged gas, preventing direct air pollution and ensuring proper storage of the coal-derived ethylene glycol.

[0018] 2. By utilizing the elastic force of the installed spring, the sliding block can slide and drive the locking block to slide into or out of the locking hole, thereby enabling quick disassembly and assembly between the sealing plate and one side of the adsorption box. This facilitates the removal and replacement of the saturated activated carbon adsorption plate, reduces the difficulty of disassembly and replacement, and improves its practicality. Attached Figure Description

[0019] Figure 1 This is a front view cross-sectional structural diagram of the present invention;

[0020] Figure 2 This is a front view structural diagram of the present utility model;

[0021] Figure 3 This is a bottom view of the structure of this utility model;

[0022] Figure 4 This is an enlarged exploded view of the adsorption box structure of this utility model;

[0023] Figure 5 This is a partial enlarged cross-sectional view of the upper part of the inner and outer storage tanks of this utility model.

[0024] In the diagram: 1. Outer storage tank; 2. Inner storage tank; 3. Heat exchanger tube; 4. Discharge pipe; 5. Guide hopper; 6. Controller; 7. Adsorption box; 8. Mounting assembly; 801. Mounting groove; 802. Sliding block; 803. Locking block; 804. Connecting rod; 805. Locking hole; 806. Mounting spring; 807. Sliding rod; 9. First one-way exhaust pipe; 10. Second one-way exhaust pipe; 11. Breathing valve; 12. Feed pipe; 13. Nitrogen inlet pipe; 14. Medium outlet pipe; 15. Explosion-proof circulating pump; 16. Medium inlet pipe; 17. Thermometer; 18. Level gauge; 19. Pressure gauge; 20. Sampling tube; 21. Sealing plate; 22. Grounding post; 23. Fixing groove; 24. Sealing ring; 25. Activated carbon adsorption plate; 26. Molecular sieve dryer; 27. Precision filter. Detailed Implementation

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] Example 1

[0028] A preferred embodiment of the storage device for coal-to-ethylene glycol provided by this utility model is, for example... Figures 1 to 5 As shown: A storage device for coal-to-ethylene glycol includes an outer storage tank 1; a controller 6 fixedly connected to the lower end of one side of the outer storage tank 1; an adsorption box 7 fixedly connected to the upper end of one side of the outer storage tank 1; a fixing groove 23 opened on one side of the adsorption box 7; a sealing plate 21 movably connected to one side of the adsorption box 7; activated carbon adsorption plates 25 extending into the interior of the adsorption box 7 fixedly connected at equal intervals on one side of the sealing plate 21; an installation assembly 8 assembled on the upper end of one side of the adsorption box 7, the installation assembly 8 being used to achieve quick assembly and disassembly of the sealing plate 21; an inner storage tank 2 fixedly connected to the inner wall of the outer storage tank 1; a discharge pipe 4 extending to the outside of the outer storage tank 1 fixedly connected to the bottom end of the inner storage tank 2; a nitrogen inlet pipe 13 fixedly connected to one side of the top of the outer storage tank 1; the bottom end of the nitrogen inlet pipe 13 extending into the interior of the inner storage tank 2; a molecular sieve dryer 26 fixedly connected to the middle position of the top of the outer storage tank 1; and the bottom end of the molecular sieve dryer 26 connected to the inner storage tank. The top of the storage tank 2 is connected to the interior. A precision filter 27 is fixedly connected to the top of the molecular sieve dryer 26. A feed pipe 12 is fixedly connected to the top of the precision filter 27. A first one-way exhaust pipe 9 is fixedly connected to one side of the top of the outer storage tank 1. One end of the first one-way exhaust pipe 9 extends into the interior of the inner storage tank 2, and the other end of the first one-way exhaust pipe 9 is connected to one side of the top of the adsorption box 7. A breather valve 11 is fixedly connected to one side of the top of the outer storage tank 1. The input end of the breather valve 11 is connected to the interior of the inner storage tank 2 through a conduit. A second one-way exhaust pipe 10, which is connected to the top of the adsorption box 7, is fixedly connected to one side of the breather valve 11. A pressure gauge 19 is fixedly connected to one end of the top of the outer storage tank 1. A sampling tube 20 is fixedly connected to the top of the outer storage tank 1 on one side of the pressure gauge 19. A level gauge 18 is fixedly connected to the middle position of the surface of the outer storage tank 1. A thermometer 17 is fixedly connected to the lower end of the surface of the outer storage tank 1 on one side of the level gauge 18.

[0029] It should be noted that some existing storage devices for coal-to-ethylene glycol still have certain shortcomings in actual use. Some storage tanks are not equipped with corresponding breather valves, making it difficult to balance the pressure inside and outside the storage tank. Even if existing storage tanks are equipped with breather valves, the gas discharged contains trace amounts of ethylene glycol vapor, so its direct emission will cause some air pollution, resulting in inconvenience in use.

[0030] In this embodiment, firstly, the two connecting pipes on one side of the medium outlet pipe 14 and the medium inlet pipe 16 are connected to the external refrigerant and heat medium delivery pipes, respectively, so that refrigerant or heat medium can be delivered as needed. Then, the air inlet end of the breather valve 11 is connected to the nitrogen delivery pipe. After that, nitrogen can be delivered into the inner storage tank 2 through the nitrogen inlet pipe 13. The air inside the inner storage tank 2 is discharged into the mounting assembly 8 through the first one-way exhaust pipe 9. The activated carbon adsorption plate 25 adsorbs the incoming air and then discharges it through the through hole at the bottom of the mounting assembly 8. After the air inside the inner storage tank 2 is discharged, the valve on the nitrogen inlet pipe 13 is closed. Then, coal-derived ethylene glycol is delivered through the feed pipe 12 and filtered and dried using a precision filter 27 and a molecular sieve dryer 26 to ensure the purity of the coal-derived ethylene glycol. The level gauge 18 is used to clearly know the amount of coal-derived ethylene glycol stored in the inner storage tank 2. At the same time, the surface of the outer storage tank 1 is coated with a reflective coating to avoid sunlight. Direct sunlight can cause localized overheating. The temperature inside the inner storage tank 2 is monitored by thermometer 17. When the temperature is too high or too low, a refrigerant or heat transfer medium can be transported from the medium inlet pipe 16 to the heat exchange pipe 3 via an external water pump or other equipment. This allows for heat exchange in the inner storage tank 2, ensuring the optimal storage temperature. The explosion-proof circulation pump 15 can be periodically activated to extract coal-derived ethylene glycol from the lower end of the inner storage tank 2 and transport it to the upper end, achieving circulating suction of the coal-derived ethylene glycol and preventing stratification or sedimentation. During storage, if the pressure inside the inner storage tank 2 becomes unbalanced and causes air intake, nitrogen can be drawn in through the suction end of the breather valve 11 to maintain a constant internal pressure. When exhaust is required, the gas inside the inner storage tank 2 is discharged into the mounting assembly 8 through the second one-way exhaust pipe 10. At this time, the activated carbon adsorption plate 25 adsorbs trace amounts of ethylene glycol vapor in the discharged gas, preventing air pollution caused by direct emission.

[0031] In a further preferred embodiment of the present invention, a heat exchange tube 3 is wound around the surface of the inner storage tank 2, and a medium outlet pipe 14 and a medium inlet pipe 16 are fixedly connected to the upper and lower ends of one side of the surface of the outer storage tank 1, respectively. The medium outlet pipe 14 and the medium inlet pipe 16 are respectively connected to the upper and lower ends of the heat exchange tube 3.

[0032] In this embodiment, two connecting pipes are provided on one side of the medium outlet pipe 14 and the medium inlet pipe 16, so that refrigerant or heat medium can be transported, which facilitates heat exchange to the inner storage tank 2 and ensures its optimal heat exchange effect.

[0033] In a further preferred embodiment of the present utility model, the heat exchange tubes 3 are spirally wound and distributed on the surface of the inner storage tank 2, and the flow direction of the medium inside the heat exchange tubes 3 is from bottom to top.

[0034] In this embodiment, the spiral heat exchange tubes 3 are used to extend the flow time of the medium, increase the contact area with the surface of the inner storage tank 2, and improve the heat exchange effect.

[0035] In a further preferred embodiment of the present utility model, an explosion-proof circulation pump 15 is fixedly connected to the lower end of the back surface of the outer storage tank 1. The input end of the explosion-proof circulation pump 15 is connected to the lower end inside the inner storage tank 2 through a conduit, and the output end of the explosion-proof circulation pump 15 is connected to the upper end inside the inner storage tank 2 through a conduit.

[0036] In this embodiment, an explosion-proof circulation pump 15 is fixedly connected to the lower end of the back surface of the outer storage tank 1. The input end of the explosion-proof circulation pump 15 is connected to the lower end inside the inner storage tank 2 through a conduit, and the output end of the explosion-proof circulation pump 15 is connected to the upper end inside the inner storage tank 2 through a conduit.

[0037] In a further preferred embodiment of the present utility model, the sealing plate 21 is convex in shape, and the cross-sectional area of one side of the sealing plate 21 is larger than the cross-sectional area of the inner opening of the fixing groove 23.

[0038] In this embodiment, the sealing plate 21 with a larger area is used to fully shield and seal the grounding post 22 after installation.

[0039] In a further preferred embodiment of the present utility model, a sealing ring 24 is fixedly connected to one side of the surface of the sealing plate 21, and the sealing ring 24 is in the shape of a square frame.

[0040] In this embodiment, the square-frame-shaped sealing ring 24 is used to improve the sealing performance after the sealing plate 21 and the grounding post 22 are snap-fitted and installed.

[0041] Embodiment 2

[0042] On the basis of Embodiment 1, the preferred embodiment of the storage device for coal-to-ethylene glycol provided by the present utility model is as Figures 1 to 5 shown: The installation component 8 includes: installation grooves 801 symmetrically opened at the upper end of one side of the adsorption box 7, and a sliding rod 807 is fixedly connected to the inner wall of the installation groove 801; a sliding block 802 slidably connected to the surfaces of the two sliding rods 807, and an installation spring 806 is wound around the surface of the sliding rod 807, and both ends of the installation spring 806 are fixedly connected to the inner top wall of the installation groove 801 and the top end of the sliding block 802 respectively; a clamping block 803 fixedly connected to one side of the bottom ends of the two sliding blocks 802, and a connecting rod 804 is fixedly connected to one side of the two sliding blocks 802; clamping holes 805 symmetrically opened at the top end of the sealing plate 21.

[0043] In this embodiment, by moving the connecting rod 804, the two sliding blocks 802 slide on the surface of the sliding rod 807, compressing the mounting spring 806 and causing the two locking blocks 803 to rise until they are completely disengaged from the inside of the locking hole 805. Then, the sealing plate 21 and the activated carbon adsorption plate 25 can be slid out from the inside of the adsorption box 7 through the handle on the sealing plate 21, which facilitates the replacement of the saturated activated carbon adsorption plate 25. During installation, the connecting rod 804 is first moved to raise the two locking blocks 803, and then the activated carbon adsorption plate 25 is placed into the adsorption box 7, so that the sealing plate 21 is locked into the fixing groove 23. At the same time, the sealing ring 24 is used to improve the sealing performance of the sealing plate 21 and the fixing groove 23. The connecting rod 804 is then released, and the elastic force of the mounting spring 806 causes the sliding block 802 to slide down, causing the locking block 803 to slide down and lock into the locking hole 805, ensuring the firm stability of the sealing plate 21 and the adsorption box 7 after locking installation.

[0044] In a further preferred embodiment of the present invention, the bottom end of the card block 803 and the interior of the card hole 805 form a locking structure, and the top end of the card block 803 and one side of the bottom end of the sliding block 802 form a welded integrated structure.

[0045] In this embodiment, the locking block 803 and the locking hole 805 are used to achieve a firm and stable locking installation between the sealing plate 21 and one side of the adsorption box 7.

[0046] In a further preferred embodiment of this utility model, a grounding post 22 is fixedly connected to one side of the bottom end of the outer storage tank 1. The grounding post 22 can be connected to an external grounding wire to avoid the accumulation of static electricity on the surface of the outer storage tank 1.

[0047] In a further preferred embodiment of the present invention, a guide bucket 5 is fixedly connected to the inner bottom wall of the inner storage tank 2, and the guide bucket 5 is funnel-shaped.

[0048] In this embodiment, a funnel-shaped guide bucket 5 is used to facilitate the guidance of coal-derived ethylene glycol, allowing it to be discharged through the discharge pipe 4 more quickly and thoroughly.

[0049] In summary, heat exchange is achieved using heat exchange tube 3 to ensure optimal storage temperature. Nitrogen inlet pipe 13 is used to achieve nitrogen sealing, and breather valve 11 is used to balance the internal and external gas pressure of the inner storage tank 2. Adsorption box 7 and activated carbon adsorption plate 25 are used to adsorb the gas discharged from the first one-way exhaust pipe 9 and the second one-way exhaust pipe 10, avoiding the direct discharge of trace amounts of ethylene glycol vapor in the gas and causing air pollution. At the same time, explosion-proof circulation pump 15 is used to circulate and pump coal-derived ethylene glycol inside the inner storage tank 2 to prevent stratification or precipitation.

[0050] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0051] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative; the division of units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0052] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A storage device for coal-to-ethylene glycol, characterized in that, include: External storage container (1); A controller (6) is fixedly connected to the lower end of one side of the outer storage tank (1). An adsorption box (7) is fixedly connected to the upper end of one side of the outer storage tank (1). A fixing groove (23) is opened on one side of the adsorption box (7). A sealing plate (21) is movably connected to one side of the adsorption box (7). Activated carbon adsorption plates (25) extending into the adsorption box (7) are fixedly connected at equal intervals on one side of the sealing plate (21). The mounting assembly (8) is installed on the upper side of the adsorption box (7), and the mounting assembly (8) is used to realize the quick assembly and disassembly of the sealing plate (21); An inner storage tank (2) is fixedly connected to the inner wall of the outer storage tank (1), and a discharge pipe (4) extending to the outside of the outer storage tank (1) is fixedly connected to the bottom end of the inner storage tank (2); A nitrogen inlet pipe (13) is fixedly connected to one side of the top of the outer storage tank (1). The bottom end of the nitrogen inlet pipe (13) extends into the interior of the inner storage tank (2). A molecular sieve dryer (26) is fixedly connected to the middle position of the top of the outer storage tank (1). The bottom end of the molecular sieve dryer (26) communicates with the top of the interior of the inner storage tank (2). A precision filter (27) is fixedly connected to the top of the molecular sieve dryer (26). A feed pipe (12) is fixedly connected to the top of the precision filter (27). A first one-way exhaust pipe (9) is fixedly connected to one side of the top of the tank (1). One end of the first one-way exhaust pipe (9) extends into the interior of the inner storage tank (2), and the other end of the first one-way exhaust pipe (9) is connected to one side of the top of the adsorption box (7). A breathing valve (11) is fixedly connected to one side of the top of the outer storage tank (1). The input end of the breathing valve (11) is connected to the interior of the inner storage tank (2) through a conduit. A second one-way exhaust pipe (10) is fixedly connected to one side of the breathing valve (11) and communicates with the top of the adsorption box (7). A pressure gauge (19) is fixedly connected to one end of the top of the outer storage tank (1). A sampling tube (20) is fixedly connected to the top of the outer storage tank (1) on one side of the pressure gauge (19). A level gauge (18) is fixedly connected to the middle position of the surface of the outer storage tank (1). A thermometer (17) is fixedly connected to the lower end of the surface of the outer storage tank (1) on one side of the level gauge (18).

2. The storage device for coal-to-ethylene glycol as described in claim 1, characterized in that, The surface of the inner storage tank (2) is wrapped with heat exchange tubes (3). The upper and lower ends of one side of the surface of the outer storage tank (1) are respectively fixedly connected to a medium outlet pipe (14) and a medium inlet pipe (16). The media outlet pipe (14) and the media inlet pipe (16) are respectively connected to the upper and lower ends of the heat exchange tubes (3).

3. The storage device for coal-to-ethylene glycol as described in claim 2, characterized in that, The heat exchange tube (3) is spirally wound on the surface of the inner storage tank (2), and the flow direction of the medium inside the heat exchange tube (3) is from bottom to top.

4. The storage device for coal-to-ethylene glycol as described in claim 1, characterized in that, An explosion-proof circulating pump (15) is fixedly connected to the lower end of the back of the outer storage tank (1). The input end of the explosion-proof circulating pump (15) is connected to the lower end of the inner storage tank (2) through a conduit, and the output end of the explosion-proof circulating pump (15) is connected to the upper end of the inner storage tank (2) through a conduit.

5. The storage device for coal-to-ethylene glycol as described in claim 1, characterized in that, The shape of the sealing plate (21) is convex, and the area of the cross-section on one side of the sealing plate (21) is larger than the area of the cross-section of the inner opening of the fixing groove (23).

6. The storage device for coal-to-ethylene glycol as described in claim 1, characterized in that, One side of the surface of the sealing plate (21) is fixedly connected with a sealing ring (24), and the shape of the sealing ring (24) is in the shape of a figure-eight.

7. The storage device for coal-to-ethylene glycol as described in claim 1, characterized in that, The installation component (8) includes: Installation grooves (801) symmetrically opened at the upper end of one side of the adsorption box (7), and slide bars (807) are fixedly connected to the inner walls of the installation grooves (801); Sliding blocks (802) slidably connected to the surfaces of the two slide bars (807), an installation spring (806) is wound around the surface of the slide bar (807), and both ends of the installation spring (806) are fixedly connected to the inner top wall of the installation groove (801) and the top end of the sliding block (802) respectively; Locking blocks (803) fixedly connected to one side of the bottom ends of the two sliding blocks (802), and a connecting rod (804) is fixedly connected to one side of the two sliding blocks (802); Locking holes (805) symmetrically opened at the top end of the sealing plate (21).

8. The storage device for coal-to-ethylene glycol as described in claim 7, characterized in that, A locking structure is formed between the bottom end of the locking block (803) and the inside of the locking hole (805), and an integrally welded structure is formed between the top end of the locking block (803) and one side of the bottom end of the sliding block (802).

9. The storage device for coal-to-ethylene glycol as described in claim 1, characterized in that, One side of the bottom end of the outer storage tank (1) is fixedly connected with a grounding post (22), and the grounding post (22) can be externally connected to a grounding wire to avoid the accumulation of static electricity on the surface of the outer storage tank (1).

10. The storage device for coal-to-ethylene glycol as described in claim 1, characterized in that, A flow guide hopper (5) is fixedly connected to the inner bottom wall of the inner storage tank (2), and the shape of the flow guide hopper (5) is funnel-shaped.

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