Dynamic adsorption device for radioactive waste liquid

Abstract

The utility model relates to the field of waste water treatment, and discloses a radioactive waste liquid dynamic adsorption device which comprises an adsorption shell I, an adsorption shell II is arranged above the adsorption shell I, adsorbent filling sleeves are arranged in the adsorption shell I and the adsorption shell II, filtering structures are arranged in the adsorbent filling sleeves, and the filtering structures are arranged in the adsorption shell II. The upper portions of the adsorbent filling sleeves abut against flow guide seats, the upper portions of the two flow guide seats are fixed to the first adsorption shell and the second adsorption shell correspondingly, the adsorbent filling sleeves and the adsorbents are arranged in the first adsorption shell and the second adsorption shell correspondingly, and the filtering structures are arranged in the adsorbent filling sleeves. The radioactive waste liquid enters the filtering structure and then flows outwards, the filtering structure and the adsorbent filling sleeve are vertically designed and are of an annular structure, the contact area is increased, the filtering structure is not prone to being blocked, the internal space is smaller than the external space, the internal and external pressure difference is large, and the radioactive waste liquid can conveniently flow outwards.

Description

Technical Field

[0001] The utility model relates to the field of wastewater treatment, in particular to a dynamic adsorption device for radioactive waste liquid. Background Technique

[0002] The radioactive nuclides with relatively long half-lives contained in radioactive waste liquid are mainly 235U, 127Cs, and 90Sr. The main treatment methods include coagulation precipitation method, ion exchange method, evaporation concentration method, membrane separation method, and biological treatment method. A dynamic adsorption device for radioactive waste liquid is disclosed in the Chinese utility model patent with the publication number CN218647643U. By adopting the double settings of a filtering structure and an adsorbent filling area, efficient dynamic adsorption of radioactive waste liquid can be achieved, thereby improving the adsorption efficiency of radioactive waste liquid. At the same time, due to the setting of the sampling port, the waste liquid is discharged after the adsorption result meets the discharge requirements, which can effectively ensure the adsorption effect.

[0003] In view of the above related technologies, the inventor believes that there are the following defects: in the above structure, the filtering structure is arranged above the adsorbent filling area, and the size of the filtering structure is small, which makes it easy for the filtering structure to be blocked when filtering a large amount of waste liquid. It needs to be frequently disassembled, which will affect subsequent use. Therefore, we designed a dynamic adsorption device for radioactive waste liquid. Summary of the Invention

[0004] To solve the technical problem that the filtering structure is easily blocked, the utility model provides a dynamic adsorption device for radioactive waste liquid.

[0005] The utility model is realized by adopting the following technical solutions: a dynamic adsorption device for radioactive waste liquid, including an adsorption outer shell I, an adsorption outer shell II is installed above the adsorption outer shell I, and adsorption agent filling sleeves are arranged inside both the adsorption outer shell I and the adsorption outer shell II. A filtering structure is arranged inside the adsorption agent filling sleeve, and a diversion seat is abutted above the adsorption agent filling sleeve, and the two diversion seats are respectively fixed to the adsorption outer shell I and the adsorption outer shell II.

[0006] As a further improvement of the above solution, the filtering structure is a sieve mesh, and the filtering structure is placed at the middle position inside the adsorption agent filling sleeve. A plurality of uniformly distributed small holes are arranged on the outer surface of the adsorption agent filling sleeve. The space between the adsorption agent filling sleeve and the filtering structure is filled with an adsorbent, and the adsorption agent filling sleeve is located at the middle position inside the adsorption outer shell I and the adsorption outer shell II. The waste liquid enters the inside of the filtering structure and diffuses outward for adsorption.

[0007] As a further improvement of the above solution, a mounting seat is welded to the inner bottom ends of both the first adsorption housing and the second adsorption housing. The mounting seat includes a circular plate and four straight rods. The four straight rods are welded to the outer surface of the outer ring of the circular plate in a circular shape, and the ends of the straight rods away from the circular plate are welded to the inner walls of the first adsorption housing and the second adsorption housing. A liquid drainage port is formed between two adjacent straight rods. After the waste liquid is adsorbed by the adsorbent, it will enter the lower space through the liquid drainage port for secondary adsorption or discharge.

[0008] As a further improvement of the above solution, the bottom end of the adsorbent loading sleeve abuts against the upper side of the circular plate of the mounting seat. The size of the circular plate is the same as that of the adsorbent loading sleeve, and a positioning groove is also provided on the circular plate for fixing the adsorbent loading sleeve on the circular plate.

[0009] As a further improvement of the above solution, the lower end of the diversion seat protrudes downward to form an insertion pipe, and the insertion pipe is inserted into the interior of the filtering structure, so that the liquid in the diversion seat can completely enter the filtering structure;

[0010] An integrally formed socket ring is provided on the lower surface of the diversion seat. The socket ring is sleeved on the outer surface of the upper outer ring of the adsorbent loading sleeve, and the two are in close contact, improving the sealing performance.

[0011] As a further improvement of the above solution, flanges are welded to the upper and lower ends of both the first adsorption housing and the second adsorption housing. An installation hole is provided above the diversion seat. The first adsorption housing, the second adsorption housing and the diversion seat are all connected through flanges, bolts and nuts, which facilitates the installation and disassembly of the entire device.

[0012] As a further improvement of the above solution, a liquid inlet part is installed above the first adsorption housing through a flange, and a support plate and a liquid outlet part are installed below the second adsorption housing through a flange. Four uniformly distributed support frames are welded below the support plate, which facilitates the discharge and collection of the liquid after adsorption and purification.

[0013] As a further improvement of the above solution, a sampling port is provided below the outer surface of the second adsorption housing, and a sealing plug is provided in the sampling port. The waste liquid after primary adsorption can be sampled and detected through the sampling port.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. In the present utility model, an adsorbent filling sleeve and an adsorbent are provided in both the adsorption outer shell one and the adsorption outer shell two, and the filtering structure is arranged inside the adsorbent filling sleeve. After the radioactive waste liquid enters the filtering structure, it flows outwards. The filtering structure and the adsorbent filling sleeve are vertically designed and in a ring structure, increasing the contact area, making the filtering structure not easily blocked, and the internal space is smaller than the external space, resulting in a larger internal and external pressure difference, which also facilitates the outward flow of the radioactive waste liquid.

[0016] 2. By providing a diversion seat above the adsorption outer shell one and the adsorption outer shell two, and the lower end of the diversion seat extends into the filtering structure and is tightly pressed against the adsorbent filling sleeve, the radioactive waste liquid can completely enter the filtering structure, facilitating subsequent adsorption operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of a dynamic adsorption device for radioactive waste liquid provided by the present utility model;

[0018] Figure 2 is Figure 1 the front view of

[0019] Figure 3 is Figure 2 the sectional view taken along line A - A in

[0020] Figure 4 is Figure 1 the internal schematic diagram of

[0021] Figure 5 is the structural schematic diagram of the adsorption outer shell two.

[0022] MAIN SYMBOL DESCRIPTION:

[0023] 1. Adsorption outer shell one; 2. Adsorption outer shell two; 21. Sealing plug; 22. Flange; 3. Liquid inlet part; 4. Support plate; 41. Support frame; 5. Liquid outlet part; 6. Diversion seat; 61. Socket ring; 62. Insertion pipe; 7. Adsorbent filling sleeve; 8. Filtering structure; 9. Mounting seat; 91. Drainage port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, in combination with the drawings and the specific embodiments, the present utility model will be further described. It should be noted that, on the premise of no conflict, any combination can be formed among the following described embodiments or technical features to form a new embodiment. Embodiment

[0025] Please refer to Figures 1-5, A dynamic adsorption device for radioactive waste liquid in this embodiment includes an adsorption outer shell 1. An adsorption outer shell 2 is installed above the adsorption outer shell 1. Adsorbent filling sleeves 7 are provided inside both the adsorption outer shell 1 and the adsorption outer shell 2. A filtering structure 8 is arranged inside the adsorbent filling sleeve 7. Above the adsorbent filling sleeve 7 is abutted against a diversion seat 6. The upper parts of the two diversion seats 6 are respectively fixed to the adsorption outer shell 1 and the adsorption outer shell 2.

[0026] The filtering structure 8 is a kind of sieve mesh. The filtering structure 8 is placed at the middle position inside the adsorbent filling sleeve 7. A plurality of uniformly distributed small holes are arranged on the outer surface of the outer circle of the adsorbent filling sleeve 7. The space between the adsorbent filling sleeve 7 and the filtering structure 8 is filled with adsorbent. And the adsorbent filling sleeve 7 is at the middle position inside the adsorption outer shell 1 and the adsorption outer shell 2. The waste liquid enters the inside of the filtering structure 8 and diffuses outward for adsorption.

[0027] At the inner bottom ends of both the adsorption outer shell 1 and the adsorption outer shell 2, a mounting seat 9 is welded. The mounting seat 9 includes a circular plate and four straight rods. The four straight rods are welded in a circular shape on the outer surface of the circular plate. And the ends of the straight rods away from the circular plate are welded to the inner walls of the adsorption outer shell 1 and the adsorption outer shell 2. A liquid discharge port 91 is formed between two adjacent straight rods. After the waste liquid is adsorbed by the adsorbent, it will enter the lower space through the liquid discharge port 91 for secondary adsorption or discharge.

[0028] The bottom end of the adsorbent filling sleeve 7 abuts against the upper part of the circular plate of the mounting seat 9. The size of the circular plate is the same as that of the adsorbent filling sleeve 7. And a positioning groove is also provided on the circular plate for fixing the adsorbent filling sleeve 7 on the circular plate.

[0029] The lower end of the diversion seat 6 protrudes downward to form an insertion pipe 62. And the insertion pipe 62 is inserted into the inside of the filtering structure 8, which is convenient for the liquid in the diversion seat 6 to completely enter the filtering structure 8. An integrally formed socket ring 61 is provided on the lower surface of the diversion seat 6. The socket ring 61 is sleeved on the outer surface of the upper outer circle of the adsorbent filling sleeve 7, and the two are in close contact, improving the sealing performance.

[0030] Flanges 22 are welded to the upper and lower ends of both the adsorption outer shell 1 and the adsorption outer shell 2. Mounting holes are provided above the diversion seat 6. The adsorption outer shell 1, the adsorption outer shell 2 and the diversion seat 6 are all connected through the flanges 22 and bolts and nuts, which is convenient for the installation and disassembly of the whole device.

[0031] A liquid inlet part 3 is installed above the adsorption outer shell 1 through a flange 22. A support plate 4 and a liquid outlet part 5 are installed below the adsorption outer shell 2 through a flange 22. Four uniformly distributed support frames 41 are welded below the support plate 4, which is convenient for the discharged and collected liquid after adsorption and purification.

[0032] A sampling port is provided below the outer circumferential surface of the second adsorption housing 2, and a sealing plug 21 is arranged in the sampling port. The waste liquid after primary adsorption can be sampled and detected through the sampling port.

[0033] In the embodiment of the present application, the implementation principle of a radioactive waste liquid dynamic adsorption device is as follows: The radioactive waste liquid enters the uppermost diversion seat 6 through the liquid inlet part 3, and enters the filtering structure 8 inside the second adsorption housing 2 through the diversion seat 6. The waste liquid after filtration will flow through the upper adsorbent and perform primary adsorption on the radioactive waste liquid. Then, the radioactive waste liquid enters the inside of the second adsorption housing 2 and enters the filtering structure 8 and the adsorbent in the first adsorption housing 1 through the lower diversion seat 6 for secondary adsorption, and finally is discharged through the liquid outlet part 5.

[0034] By arranging an adsorbent loading sleeve 7 and an adsorbent in both the first adsorption housing 1 and the second adsorption housing 2, and the filtering structure 8 is arranged inside the adsorbent loading sleeve 7. After the radioactive waste liquid enters the filtering structure 8, it flows outwards. The filtering structure 8 and the adsorbent loading sleeve 7 are vertically designed and in a ring structure, which increases the contact area, makes the filtering structure 8 not easy to be blocked, and the internal space is smaller than the external space, resulting in a larger internal and external pressure difference, which is also convenient for the radioactive waste liquid to flow outwards.

[0035] By arranging a diversion seat 6 above the first adsorption housing 1 and the second adsorption housing 2, and the lower end of the diversion seat 6 extends into the filtering structure 8 and is tightly pressed against the adsorbent loading sleeve 7, the radioactive waste liquid can completely enter the filtering structure 8, which is convenient for subsequent adsorption operations.

[0036] The above implementation manners are only the preferred implementation manners of the present utility model, and cannot be used to limit the protection scope of the present utility model. Any non-substantial changes and substitutions made by those skilled in the art on the basis of the present utility model belong to the protection scope required by the present utility model.

Claims

1. A radioactive waste liquid dynamic adsorption device, characterized in that: The invention comprises an adsorption shell one (1), an adsorption shell two (2) is installed on the top of the adsorption shell one (1), and an adsorbent filling sleeve (7) is arranged inside the adsorption shell one (1) and the adsorption shell two (2), a filtering structure (8) is arranged inside the adsorbent filling sleeve (7), a guide seat (6) is abutted on the top of the adsorbent filling sleeve (7), and the tops of the two guide seats (6) are respectively fixed to the adsorption shell one (1) and the adsorption shell two (2).

2. A radioactive waste liquid dynamic adsorption device as claimed in claim 1, characterized in that: The filtering structure (8) is a screen, and the filtering structure (8) is placed in the middle of the adsorbent filling sleeve (7), and the outer ring surface of the adsorbent filling sleeve (7) is provided with a plurality of evenly distributed small holes.

3. A radioactive waste liquid dynamic adsorption device as claimed in claim 1, characterized in that: A mounting seat (9) is welded to the inner bottom end of each of the adsorption shells 1 (1) and 2 (2); the mounting seat (9) comprises a circular plate and four straight rods, the four straight rods being welded to the outer surface of the circular plate in a ring shape, and the ends of the straight rods away from the circular plate are welded to the inner walls of the adsorption shells 1 (1) and 2 (2), and a liquid discharge port (91) is formed between two adjacent straight rods.

4. A radioactive waste liquid dynamic adsorption device as claimed in claim 3, characterized in that: The bottom end of the adsorbent filling sleeve (7) abuts against the top of the circular plate of the mounting seat (9).

5. The radioactive waste liquid dynamic adsorption device according to claim 1, characterized in that: The lower end of the flow guide seat (6) protrudes downward to form a plug-in tube (62), and the plug-in tube (62) is plugged into the interior of the filter structure (8); A sleeve ring (61) is integrally formed on the lower end surface of the guide seat (6), and the sleeve ring (61) is sleeved on the upper outer ring surface of the adsorbent filling sleeve (7), and the two are in close contact.

6. A radioactive waste liquid dynamic adsorption device as claimed in claim 1, characterized in that: Flanges (22) are welded to the upper and lower ends of the adsorption shell 1 (1) and the adsorption shell 2 (2); a mounting hole is provided above the flow guide seat (6); and the adsorption shell 1 (1), the adsorption shell 2 (2) and the flow guide seat (6) are connected via the flanges (22) and bolts and nuts.

7. A radioactive waste liquid dynamic adsorption device as claimed in claim 6, characterized in that: A liquid inlet (3) is installed above the first adsorption shell (1) via a flange (22), and a support plate (4) and a liquid outlet (5) are installed below the second adsorption shell (2) via a flange (22), and four evenly distributed support frames (41) are welded below the support plate (4).

8. The dynamic adsorption device for radioactive liquid waste according to claim 1, characterized in that: A sampling port is provided below the outer ring surface of the second adsorption shell (2), and a sealing plug (21) is provided in the sampling port.

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