Composite membrane reactor for flue gas demercuration

Abstract

The utility model discloses a composite membrane reactor for flue gas demercuration, and relates to the technical field of flue gas demercuration. The device structurally comprises a self-replacing filter element gas guide tower, a multi-membrane integrated filter element, a telescopic replacing plate, an electric telescopic rod and an end cover, the self-replacing filter element gas guide tower comprises a rectangular replacing groove body of which one end is opened and is horizontally inserted and matched with the telescopic replacing plate; a first gas guide pipeline is fixed on the upper wall of the rectangular replacement tank body in a penetrating manner; and a second gas guide pipeline is fixed to the lower wall of the rectangular replacement tank body in a penetrating mode, and the second gas guide pipeline and the first gas guide pipeline are coaxially arranged. By adopting the structures of the multi-membrane integrated filter element, the electric telescopic rod and the like, the quick replacement of the filter element and the efficient mercury removal are realized; the stability and the sealing property of the reactor are further improved by introducing a preferable technical scheme, such as a vibration motor, a guide structure and a sealing structure; the device has the advantages of simple structure, convenience in operation, high treatment efficiency, low running cost and the like, and has a wide application prospect.

Description

Technical Field

[0001] This utility model belongs to the field of flue gas mercury removal technology, and in particular relates to a composite membrane reactor for flue gas mercury removal. Background Technology

[0002] With the continuous development of industrialization, the problem of flue gas emissions has become increasingly prominent. Mercury, as a toxic heavy metal element in flue gas, has caused serious harm to the environment and human health. Mercury in flue gas usually exists in gaseous or particulate form, making it difficult to be effectively captured by traditional dust removal equipment. Therefore, the development of efficient, economical, and reliable flue gas mercury removal technology has become one of the current hot topics in the environmental protection field.

[0003] Currently, the adsorption method in flue gas mercury removal technology generally suffers from problems such as high operating costs, complex equipment, and difficult maintenance in practical applications. For example, the adsorption method requires frequent replacement of the adsorbent and a large amount of manpower for maintenance, resulting in high operating costs.

[0004] To solve the above-mentioned technical problems, this utility model proposes a composite membrane reactor for mercury removal from flue gas. Utility Model Content

[0005] The purpose of this invention is to provide a composite membrane reactor for mercury removal from flue gas. By adopting a self-replacing filter cartridge air guide tower, multi-membrane integrated filter cartridge, telescopic replacement plate, electric telescopic rod, and end cap, it achieves efficient removal of mercury from flue gas and convenient replacement of filter cartridges.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a composite membrane reactor for mercury removal from flue gas, comprising a self-replacing filter element gas guide tower, a multi-membrane integrated filter element, a telescopic replacement plate, an electric telescopic rod, and end caps. The self-replacing filter element gas guide tower includes a rectangular replacement tank with one end open and horizontally inserted into the telescopic replacement plate. A first gas guide pipe is fixedly inserted through the upper wall of the rectangular replacement tank. A second gas guide pipe is fixedly inserted through the lower wall of the rectangular replacement tank, and the second gas guide pipe is coaxially arranged with the first gas guide pipe. A feed pipe is fixedly inserted through one end of the upper wall of the rectangular replacement tank adjacent to the opening. A recovery pipe is fixedly inserted through the lower wall of the rectangular replacement tank away from the opening. An end cap is threadedly connected to the end of the feed pipe and the end of the recovery pipe, respectively. A plurality of multi-membrane integrated filter elements are stacked inside the feed pipe. The electric telescopic rod is fixed to one side of the rectangular replacement tank. The telescopic end of the electric telescopic rod is fixed to the telescopic replacement plate.

[0008] As a preferred embodiment of this utility model, a vibration motor is installed on the rectangular replacement groove.

[0009] As a preferred embodiment of this utility model, the multi-membrane integrated filter element includes an annular groove, a ventilation cap, a honeycomb mesh partition, and a composite membrane; the outer diameter of the annular groove is larger than the inner diameter of the second air guide pipe; the outer diameter of the annular groove is larger than the inner diameter of the first air guide pipe; a ventilation window is provided on the bottom surface of the annular groove; several layers of the honeycomb mesh partition are installed inside the annular groove, and a layer of the composite membrane is provided between two adjacent layers of the honeycomb mesh partition; the ventilation cap is threaded to the inner side of the opening end of the annular groove; a first chamfer is provided on the outer annular edge at the upper end of the annular groove; a second chamfer is provided on the outer annular edge at the lower end of the annular groove.

[0010] As a preferred embodiment of this utility model, the telescopic replacement plate includes a rectangular insert plate that mates with the inner cavity of the rectangular replacement groove; the rectangular insert plate has a circular through hole that mates with the multi-membrane integrated filter element; the upper and lower ends of the circular through hole are both provided with a third chamfer; a connecting end plate is fixed to the outer end of the rectangular insert plate; the telescopic end of the electric telescopic rod is fixed to the connecting end plate.

[0011] As a preferred embodiment of this utility model, a guide rod is fixed on the connecting end plate; a guide cylinder that cooperates with the guide rod is fixed on the other side wall of the rectangular replacement groove.

[0012] As a preferred embodiment of this utility model, the rectangular replacement groove has a rectangular annular groove at its open end; the bottom surface of the rectangular annular groove has several threaded blind holes; a rubber ring that seals with the rectangular insert plate is installed inside the rectangular annular groove; the rubber ring is fixed by an annular flange plate and several countersunk bolts.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this invention, flue gas enters the rectangular replacement tank through the first air guide pipe. After being filtered by the multi-membrane integrated filter element, harmful substances such as mercury are adsorbed by the composite membrane. The purified flue gas is then discharged through the second air guide pipe. When the filter element needs to be replaced, the telescopic replacement plate is moved by the electric telescopic rod, causing the multi-membrane integrated filter element to slide out from one end of the feed pipe. At the same time, a new filter element can enter the tank from the other end through the feed pipe for replacement. A vibration motor provides vibration assistance during this process to ensure smooth detachment and installation of the filter element.

[0015] 2. The design of this telescopic replacement plate makes filter replacement more convenient. It includes a rectangular insert plate that mates with the inner cavity of the rectangular replacement tank. The rectangular insert plate has a circular through-hole that mates with the multi-membrane integrated filter element, ensuring that the filter element can pass through smoothly. A connecting end plate is fixed to the outer end of the rectangular insert plate, and the telescopic end of the electric telescopic rod is fixed to the connecting end plate, thereby driving the movement of the telescopic replacement plate. A guide rod is also fixed to the connecting end plate, and a guide cylinder that mates with the guide rod is fixed to the other side wall of the rectangular replacement tank. This design ensures the stability and accuracy of the telescopic replacement plate during movement.

[0016] 3. To ensure the sealing between the rectangular replacement trough and the telescopic replacement plate, this utility model provides a rectangular annular groove at the open end of the rectangular replacement trough, and several threaded blind holes on the bottom surface of the rectangular annular groove. A rubber ring that seals with the rectangular insert plate is installed inside the rectangular annular groove. The rubber ring is fixed by an annular flange plate and several countersunk bolts, thereby preventing flue gas leakage and ensuring the purification effect.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the composite membrane reactor for mercury removal from flue gas according to this invention.

[0020] Figure 2 for Figure 1 A cross-sectional schematic diagram.

[0021] Figure 3 for Figure 1 Top view.

[0022] Figure 4 This is a schematic diagram of the self-replacing filter air guide tower.

[0023] Figure 5 This is a schematic diagram of half of the structure of a multi-membrane integrated filter element.

[0024] Figure 6 This is a schematic diagram of the annular groove.

[0025] Figure 7 A schematic diagram of the structure for the telescopic replacement plate.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1-Self-replacing filter element air guide tower, 2-Multi-membrane integrated filter element, 3-Telescopic replacement plate, 4-Electric telescopic rod, 5-End cap, 6-Rubber ring, 7-Annular flange plate, 11-Rectangular replacement tank, 12-First air guide pipe, 13-Second air guide pipe, 14-Preparation pipe, 15-Recovery pipe, 16-Guide cylinder, 17-Rectangular annular groove, 18-Threaded blind hole, 21-Annular groove, 22-Ventilation gland, 23-Honeycomb mesh partition, 24-Composite membrane, 25-Ventilation window, 31-Rectangular insert plate, 32-Circular through hole, 33-Connecting end plate, 34-Guide round rod. Detailed Implementation

[0028] 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 scope of protection of the present utility model. Specific Implementation Example 1:

[0030] Please see Figure 1-7 As shown, this utility model is a composite membrane reactor for mercury removal from flue gas, including a self-replacing filter element air guide tower 1, a multi-membrane integrated filter element 2, a telescopic replacement plate 3, an electric telescopic rod 4, and an end cap 5. The self-replacing filter element air guide tower 1 includes a rectangular replacement tank 11 with one end open and horizontally inserted into the telescopic replacement plate 3. A first air guide pipe 12 is fixedly fixed through the upper wall of the rectangular replacement tank 11. A second air guide pipe 13 is fixedly fixed through the lower wall of the rectangular replacement tank 11, and the second air guide pipe 13 is coaxially arranged with the first air guide pipe 12. The part of the inner wall of the rectangular replacement tank 11 that meets the second air guide pipe 13 has a chamfer. A feed pipe 14 is fixedly fixed through one end of the upper wall of the rectangular replacement tank 11 adjacent to the opening. A recovery pipe 15 is fixedly fixed through the lower wall of the rectangular replacement tank 11 away from the opening. An end cap 5 is threadedly connected to the end of the feed pipe 14 and the end of the recovery pipe 15 respectively. Several multi-membrane integrated filter elements 2 are stacked inside the feed pipe 14. The electric telescopic rod 4 is fixed to one side of the rectangular replacement trough 11. The telescopic end of the electric telescopic rod 4 is fixed to the telescopic replacement plate 3.

[0031] The rectangular replacement tank 11 is equipped with a vibration motor, which can provide vibration assistance during the filter element replacement process, making it easier for the filter element to fall out of the tank.

[0032] The multi-membrane integrated filter element 2 includes an annular groove 21, a ventilation cap 22, honeycomb mesh partitions 23, and a composite membrane 24. The outer diameter of the annular groove 21 is larger than the inner diameter of the second air guide pipe 13. The outer diameter of the annular groove 21 is larger than the inner diameter of the first air guide pipe 12. A ventilation window 25 is provided on the bottom surface of the annular groove 21. Several layers of honeycomb mesh partitions 23 are installed inside the annular groove 21, and a composite membrane 24 is provided between two adjacent layers of honeycomb mesh partitions 23. The ventilation cap 22 is threaded to the inside of the opening end of the annular groove 21. A first chamfer is provided on the outer annular edge at the upper end of the annular groove 21. A second chamfer is provided on the outer annular edge at the lower end of the annular groove 21. The manufacturing process of the composite membrane 24 includes vacuum filtration, impregnation, phase inversion, washing, and drying. The specific process includes the following steps: (a) dispersing multi-walled carbon nanotube powder in deionized water and treating it with an ultrasonic cell disruptor to ensure uniform dispersion; (b) uniformly dispersing multi-walled carbon nanotubes on the surface of nonwoven fabric through vacuum filtration to form a thin skeleton; (c) adding aniline and polyvinylidene fluoride to N-methylpyrrolidone solution (NMP) to prepare a mixed organic solution; (d) immersing the film in the mixed organic solution; (e) adding ammonium persulfate and sodium dodecylbenzenesulfonate (SDBS) to sulfuric acid solution to prepare a polymerization initiator solution; (f) immersing the film in the polymerization initiator solution, where the phase inversion initiated by polyvinylidene fluoride and the polymerization reaction initiated by ammonium persulfate occur simultaneously; (g) washing the polymerized film with anhydrous ethanol and deionized water, and drying it in a vacuum drying oven to obtain the finished film; (h) impregnating the finished film with an acidic solution containing chloride ions, washing and drying it to finally obtain the effective film.

[0033] The telescopic replacement plate 3 includes a rectangular insert plate 31 that mates with the inner cavity of the rectangular replacement groove 11. The rectangular insert plate 31 has a circular through-hole 32 that mates with the multi-membrane integrated filter element 2. Both the upper and lower ends of the circular through-hole 32 have a third chamfer. A connecting end plate 33 is fixed to the outer end of the rectangular insert plate 31. The telescopic end of the electric telescopic rod 4 is fixed to the connecting end plate 33.

[0034] A guide rod 34 is fixed on the connecting end plate 33. A guide cylinder 16 that cooperates with the guide rod 34 is fixed on the other side wall of the rectangular replacement groove 11. Fixing the guide rod 34 on the connecting end plate 33 and fixing the guide cylinder 16 that cooperates with the guide rod 34 on the other side wall of the rectangular replacement groove 11 can improve the stability and accuracy of the movement of the telescopic replacement plate 3.

[0035] The rectangular replacement tank 11 has a rectangular annular groove 17 at its open end. Several threaded blind holes 18 are formed on the bottom surface of the rectangular annular groove 17. A rubber ring 6, which seals against the rectangular insert plate 31, is installed inside the rectangular annular groove 17. The rubber ring 6 is secured by an annular flange plate 7 and several countersunk bolts. The presence of the rectangular annular groove 17 at the open end of the rectangular replacement tank 11, and the installation of the rubber ring 6 within it, secured by the annular flange plate 7 and several countersunk bolts, ensures the reactor's sealing performance during operation.

[0036] Material preparation and installation: First, open the end cap 5 at the end of the material preparation tube 14, and stack multiple multi-membrane integrated filter elements 2 into the material preparation tube 14 in sequence. Then, close the end cap 5 and tighten it.

[0037] Flue gas treatment: When the flue gas enters the rectangular replacement tank 11 from the first gas guide pipe 12, it passes through the composite membrane 24 in the multi-membrane integrated filter element 2. The composite membrane 24 adsorbs and separates the mercury in the flue gas. The treated flue gas is discharged from the second gas guide pipe 13.

[0038] Filter replacement: When the multi-membrane integrated filter element 2 reaches saturation or needs replacement, activate the electric telescopic rod 4. The electric telescopic rod 4 first retracts, causing the telescopic replacement plate 3 to move towards the recovery pipe 15, discharging the old multi-membrane integrated filter element 2 through the recovery pipe 15. Then, the electric telescopic rod 4 extends, causing the telescopic replacement plate 3 to move towards the material preparation pipe 14, and the new multi-membrane integrated filter element 2 falls back into the circular through hole 32. Then, the electric telescopic rod 4 retracts again until the circular through hole 32 is coaxial with the first air guide pipe 12, completing the replacement of the multi-membrane integrated filter element 2. When replenishing material, open the end cap 5 at the end of the material preparation pipe 14, add a new multi-membrane integrated filter element 2, and complete the replacement process. When cleaning the used multi-membrane integrated filter element 2, open the end cap 5 at the lower end of the recovery pipe 15, remove all the multi-membrane integrated filter elements 2 inside, and then reinstall the end cap 5.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A composite membrane reactor for flue gas mercury removal, characterized in that: it comprises a self-replacement filter core gas guide tower (1), a multi-membrane integrated filter core (2), an extension replacement plate (3), an electric telescopic rod (4), and an end cover (5); the self-replacement filter core gas guide tower (1) comprises a rectangular replacement slot body (11) with one end open and horizontally inserted and matched with the extension replacement plate (3); a first gas guide pipeline (12) is fixed through the upper wall of the rectangular replacement slot body (11); a second gas guide pipeline (13) is fixed through the lower wall of the rectangular replacement slot body (11), and the second gas guide pipeline (13) is coaxially arranged with the first gas guide pipeline (12); a standby material pipe (14) is fixed through the upper wall of the rectangular replacement slot body (11) adjacent to one end of the opening; a recovery pipe (15) is fixed through the lower wall of the rectangular replacement slot body (11) away from one end of the opening; the end of the standby material pipe (14) and the end of the recovery pipe (15) are respectively threadedly connected with one of the end covers (5); a plurality of multi-membrane integrated filter cores (2) are stacked in the standby material pipe (14); the electric telescopic rod (4) is fixed on one side of the rectangular replacement slot body (11); the telescopic end of the electric telescopic rod (4) is fixed on the extension replacement plate (3).

2. The composite membrane reactor for mercury removal from flue gas according to claim 1, wherein, A vibration motor is installed on the rectangular replacement slot body (11).

3. The composite membrane reactor for mercury removal from flue gas according to claim 1, wherein, The multi-membrane integrated filter core (2) comprises a ring groove (21), a ventilation gland (22), a honeycomb net partition plate (23), and a composite membrane (24); the outer diameter of the ring groove (21) is greater than the inner diameter of the second gas guide pipeline (13); the outer diameter of the ring groove (21) is greater than the inner diameter of the first gas guide pipeline (12); a ventilation window (25) is formed in the bottom surface of the ring groove (21); a plurality of layers of the honeycomb net partition plate (23) are installed in the ring groove (21), and one layer of the composite membrane (24) is arranged between two adjacent layers of the honeycomb net partition plate (23); the ventilation gland (22) is threadedly connected to the inside of the opening end of the ring groove (21); a first chamfer is formed in the outer ring edge of the upper end of the ring groove (21); a second chamfer is formed in the outer ring edge of the lower end of the ring groove (21).

4. The composite membrane reactor for mercury removal from flue gas according to claim 1, wherein, The extension replacement plate (3) comprises a rectangular insertion plate (31) matched with the inner cavity of the rectangular replacement slot body (11); a circular through hole (32) matched with the multi-membrane integrated filter core (2) is formed in the rectangular insertion plate (31); third chamfers are formed in the upper and lower ends of the circular through hole (32); a connection end plate (33) is fixed to the outer side end of the rectangular insertion plate (31); the telescopic end of the electric telescopic rod (4) is fixed on the connection end plate (33).

5. The composite membrane reactor for mercury removal from flue gas according to claim 4, wherein, A guide round rod (34) is fixed on the connection end plate (33); a guide cylinder (16) guided matched with the guide round rod (34) is fixed on the other side wall of the rectangular replacement slot body (11).

6. The composite membrane reactor for mercury removal from flue gas according to claim 4, wherein, The rectangular replacement slot body (11) is provided with a rectangular ring groove (17) at the opening end; the bottom surface of the rectangular ring groove (17) is provided with a plurality of threaded blind holes (18); the rectangular ring groove (17) is provided with a rubber ring (6) in sealing cooperation with the rectangular plug-in plate (31); the rubber ring (6) is fixed through an annular flange plate (7) and a plurality of countersunk head bolts.

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