Tray for liquid nitrogen wash production

Abstract

The utility model provides a tower tray for liquid nitrogen wash production, and belongs to the technical field of liquid nitrogen wash production. Comprising a disc body, a floating valve frame is installed at the top of the disc body, the middle of the floating valve frame is bent to form a first bent part, a rotating groove is formed in one side of the first bent part, a rotating sleeve is arranged in the rotating groove, the middle section of the first bent part and the rotating sleeve are bent to form an arc-shaped face, and a floating valve is movably arranged at the top of the floating valve frame. A sleeve piece which is bent to form a semicircular sleeve is installed on the side, close to the first bent part, of the floating valve, and the sleeve piece is rotationally connected with the interior of the rotating groove. The device has the advantages that steam moves upwards from the bottom of the tower and pushes the float valve to rotate and open when passing through the disc body, the float valve is not easy to block compared with vertical sliding of the float valve through a rotating opening mode, the sheet metal forming manufacturing and assembling cost after stamping is low, the stamping sheet metal integral forming manufacturing process is simple, and mass production and popularization are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid nitrogen washing production, and specifically relates to a tower plate used for liquid nitrogen washing production. Background Art

[0002] The liquid nitrogen washing method is a technology for the final purification of crude synthesis gas. It is mainly used to remove trace components such as CO and CH4 in crude synthesis gas. After the water vapor evaporated in the flash tank and evaporation system is condensed in the condenser, it contains a small amount of urea, ammonia and carbon dioxide and is sent to the top of the desorption tower. The desorption tower is a floating valve tower. The incoming liquid flows down layer by layer through the overflow pipes on each layer of the tower plate and goes out from the bottom of the tower. Steam enters from the bottom of the tower. Due to the countercurrent contact between the liquid and the steam, the ammonia and carbon dioxide in the liquid become less and less, and the steam leaving the top of the tower contains all the desorbed ammonia and carbon dioxide as well as water vapor. The mixed gas is introduced into the low-pressure condenser through regulation, and the desorbed ammonia and carbon dioxide are circulated back to the reaction system to desorb the liquid from the bottom of the tower.

[0003] The float valve tray is a commonly used tray. It has many square or round holes on it. Each hole has a valve plate. The gas passes through the valve hole to push the valve plate upward and ejects horizontally. When passing through the liquid layer, the gas and liquid phases form a foam state for heat and mass transfer. The existing float valve tray has no limit structure when it moves up and down. It is easy to move up and down when it is tilted left and right. Therefore, the float valve is easy to get stuck and cannot be returned or removed, affecting the use effect.

[0004] A liquid nitrogen washing tray disclosed in Chinese patent CN220552183U realizes the limiting of the floating valve shell by sliding a sliding plate inside a limiting member to cooperate with the limiting columns at both ends of the baffles on both sides of the liquid outlet base, thereby limiting the entire floating valve, effectively preventing the floating valve from falling off, increasing the stability of the floating valve, preventing the floating valve from shifting, and increasing the use effect and convenience of operation. However, while solving the problem, the liquid nitrogen washing tray has the following defects:

[0005] The device limits the float valve shell by fixing columns, sliding plates, limiting parts, etc. The device has many parts and has high production and assembly costs. The manufacturing process is relatively complicated, which is not suitable for mass production and is inconvenient to promote. Utility Model Content

[0006] The technical problem to be solved by the utility model is that the device has many parts and the production and assembly costs are high, which is inconvenient to promote. In view of the shortcomings of the prior art, a tower plate for liquid nitrogen washing production is provided, including a plate body, a float valve frame is installed on the top of the plate body, the middle part of the float valve frame is bent to form a first bending part, a rotating groove is arranged on one side of the first bending part, a rotating sleeve is arranged inside the rotating groove, the middle section of the first bending part and the rotating sleeve are bent to form an arc surface, a float valve is movably arranged on the top of the float valve frame, a sleeve sheet formed into a semicircular sleeve by bending is installed on the side of the float valve close to the first bending part, and the sleeve sheet is rotatably connected with the inside of the rotating groove.

[0007] Furthermore, a mounting groove is arranged on the top of the disk body, a through groove is opened on the top of the float valve frame, and the float valve is movably arranged on the top of the mounting groove and the through groove.

[0008] Furthermore, the float valve frame is connected to a mounting frame inside the through groove, and one end of the mounting frame passes through the mounting groove and is clamped with the disc body.

[0009] Furthermore, one side of the float valve is bent to form a second bent portion, and one side of the second bent portion is bent to form a wind shielding portion.

[0010] Furthermore, the end of the float valve frame is bent to form a third bent portion, an exhaust groove is provided inside the third bent portion, and the top of the third bent portion is bent to form a direction adjustment plate.

[0011] Furthermore, a limiting strip is stamped on one side of the first bending portion, and one end of the limiting strip is connected to the first bending portion.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. Steam moves upward from the bottom of the tower, and pushes the float valve to rotate and open when passing through the disc. At this time, the sleeve rotates around the rotating sleeve in the rotating groove, so that the vertically rising airflow is blown out at an angle at the top of the disc. The way in which the float valve is opened by rotating is less likely to be blocked than the way in which the float valve slides up and down. The first bending portion, the rotating groove and the rotating sleeve are first bent into shape after punching out holes in the sheet metal, and then the float valve is assembled through the sleeve. The sheet metal forming and assembly cost after stamping is low, and the stamping sheet metal integrated forming manufacturing process is relatively simple, which is convenient for mass production and promotion.

[0014] 2. After the float valve is opened by the airflow, it is in an upward tilted state. For this purpose, an inclined adjustment plate is set. After bending, an exhaust groove is formed in the area where the adjustment plate was originally located. The steam discharged through the float valve is adjusted by the adjustment plate so that the flow direction of the steam fits the disc body, so that the steam can desorb ammonia, carbon dioxide and water vapor more fully. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0016] Figure 1 : A schematic diagram of the structure of the three-dimensional whole in Example 1 of the utility model;

[0017] Figure 2 : A three-dimensional structural diagram of Example 1 of the utility model;

[0018] Figure 3 : A schematic diagram of the structure of the decomposed embodiment 1 of the utility model;

[0019] Figure 4 : A schematic diagram of the structure of the rotating sleeve and the rotating groove in Embodiment 1 of the present utility model;

[0020] Figure 5 : Schematic diagram of the structure of the third bending portion and the direction adjustment plate in Example 2 of the utility model.

[0021] Among them, 10-disk body, 11-mounting groove, 20-float valve frame, 21-first bending part, 22-rotating groove, 23-rotating sleeve, 24-float valve, 25-sleeve, 26-through groove, 27-limiting strip, 30-mounting frame, 40-second bending part, 41-wind shield, 50-third bending part, 51-exhaust groove, 52-adjusting plate. DETAILED DESCRIPTION

[0022] In order to better understand the present invention, the content of the present invention is further clearly described below in conjunction with the embodiments, but the protection content of the present invention is not limited to the following embodiments. In the following description, a large number of specific details are given in order to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details.

[0023] Example 1: See Figure 1-4The present embodiment is a tower tray for liquid nitrogen washing production, which includes a tray body 10, a float valve frame 20 is installed on the top of the tray body 10, the middle part of the float valve frame 20 is bent to form a first bent portion 21, a rotating groove 22 is arranged on one side of the first bent portion 21, and a rotating sleeve 23 is arranged inside the rotating groove 22. The first bent portion 21, the rotating groove 22 and the rotating sleeve 23 are first formed by punching holes in sheet metal and then bent. The middle section of the first bent portion 21 and the rotating sleeve 23 are bent into an arc surface. A float valve 24 is movably arranged on the top of the float valve frame 20. Steam moves upward from the bottom of the tower and pushes the float valve 24 to rotate and open when passing through the tray body 10. The float valve 24 is close to the A sleeve 25 which is bent to form a semicircular sleeve is installed on one side of the first bending portion 21. After the first bending portion 21 and the rotating sleeve 23 are stamped into sheet metal, the sleeve 25 is bent to form a semicircular sleeve ring which is sleeved on the rotating sleeve 23, so that the float valve 24 and the float valve frame 20 are assembled. The sleeve 25 is connected to the inside of the rotating groove 22 for rotation. The sleeve 25 rotates around the rotating sleeve 23 in the rotating groove 22, so that the vertically rising airflow is blown out at an angle at the top of the disk body 10. The way in which the float valve 24 is opened by rotation avoids blockage caused by skewness when sliding up and down compared to the way in which the float valve slides up and down. The way in which the float valve 24 is opened by rotation is smoother and less prone to blockage.

[0024] A mounting groove 11 is provided at the top of the disk body 10. When steam rises, it first enters the mounting groove 11. A through groove 26 is provided at the top of the float valve frame 20. The float valve 24 is movably provided at the top of the mounting groove 11 and the through groove 26. The steam then enters the through groove 26 and pushes the float valve 24, and the float valve 24 is pushed to open by pressure.

[0025] The float valve frame 20 is located inside the through groove 26 and is connected to the mounting frame 30. When the mounting groove 11 is stamped, a portion of the float valve frame 20 is left to form the mounting frame 30, and then the mounting frame 30 is bent downward to form a hook shape. One end of the mounting frame 30 passes through the mounting groove 11 and is clamped with the disk body 10, and then the float valve frame 20 is clamped on the disk body 10 to complete the installation with the disk body 10.

[0026] One side of the float valve 24 is bent to form a second bent portion 40, and one side of the second bent portion 40 is bent to form a wind shield 41. The second bent portion 40 is formed by sheet metal, so that the wind shield 41 is located closer to the inside of the float valve 24. When the float valve 24 is opened, the wind shield 41 is prevented from being stuck in the mounting groove 11, and blockage of the float valve 24 is prevented when the float valve 24 is moving. When the float valve 24 is opened, the wind shield 41 blocks a portion of the steam that is blown obliquely upward, so that the steam is blown out horizontally to both sides, thereby increasing the contact time between the steam and the liquid, and improving the effect of desorbing ammonia, carbon dioxide and water vapor.

[0027] On one side of the first bending portion 21, a limiting strip 27 is formed by stamping. The stamping shape is a C-shaped, and the C-shaped surrounding area forms the limiting strip 27, so that one side of the limiting strip 27 is connected to the first bending portion 21, and one end of the limiting strip 27 is connected to the first bending portion 21. The limiting strip 27 is bent and opened so that the limiting strip 27 reaches the activity area above the floating valve 24. By different degrees of bending, the maximum amplitude that the floating valve 24 can open is different, which can prevent the floating valve 24 from opening too large an angle when the steam volume is too large, so that the steam cannot be fully utilized.

[0028] Beneficial effects:

[0029] Steam moves upward from the bottom of the tower. When passing through the tray body 10, it pushes the floating valve 24 to rotate and open. At this time, the sleeve piece 25 rotates in the rotating groove 22 around the rotating sleeve 23, so that the vertically rising air flow blows obliquely at the top of the tray body 10. The floating valve 24 is more difficult to block by rotating and opening compared with the up and down sliding of the floating valve. The first bending portion 21, the rotating groove 22 and the rotating sleeve 23 are first bent and formed after punching holes by sheet metal stamping, and then the floating valve 24 is assembled through the sleeve piece 25. The manufacturing and assembly cost of the sheet metal after stamping is relatively low, and the stamping and sheet metal integral forming manufacturing process is relatively simple, which is convenient for mass production and popularization.

[0030] When the floating valve 24 is opened, the wind blocking portion 41 blocks a part of the steam blowing obliquely upward, so that the steam blows horizontally to both sides, which can increase the contact time between the steam and the liquid, and can improve the desorption effect of ammonia, carbon dioxide and water vapor.

[0031] Embodiment 2: Embodiment 2 is a further improvement based on Embodiment 1. Refer to Figure 5 , a tray for liquid nitrogen washing production in this embodiment, the end of the floating valve frame 20 is bent to form a third bending portion 50, an exhaust groove 51 is arranged inside the third bending portion 50, and a deflecting plate 52 is formed by bending at the top of the third bending portion 50.

[0032] Beneficial effects

[0033] After the floating valve 24 is rotated and opened by the air flow, it is in an inclined upward state. Although the contact time between the steam and the liquid is increased compared with the vertical blowing, only by adjusting the steam to be close to the horizontal blowing can the reaction time of the countercurrent contact between the liquid and the steam be increased, so that the steam can desorb ammonia, carbon dioxide and water vapor more fully. For this reason, a U-shaped hole is punched at the end of the floating valve frame 20 and bent to form a third bending portion 50. The area surrounded by the U-shaped hole forms an inclined deflecting plate 52 by bending. After bending, the original area where the deflecting plate 52 is located forms an exhaust groove 51. The steam discharged through the floating valve 24 is adjusted in direction by the deflecting plate 52 so that the flow direction of the steam fits the tray body 10, making the steam desorb ammonia, carbon dioxide and water vapor more fully.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tray for liquid nitrogen washing production, characterized in that: The invention comprises a disk body (10), a float valve frame (20) is installed on the top of the disk body (10), the middle part of the float valve frame (20) is bent to form a first bent part (21), a rotating groove (22) is arranged on one side of the first bent part (21), a rotating sleeve (23) is arranged inside the rotating groove (22), the middle section of the first bent part (21) and the rotating sleeve (23) are bent to form an arc surface, a float valve (24) is movably arranged on the top of the float valve frame (20), a sleeve (25) which is bent to form a semicircular sleeve is installed on one side of the float valve (24) close to the first bent part (21), and the sleeve (25) is rotatably connected to the inside of the rotating groove (22).

2. The tray for liquid nitrogen washing production as claimed in claim 1, characterized in that: The top of the disk body (10) is provided with a mounting groove (11), the top of the float valve frame (20) is provided with a through groove (26), and the float valve (24) is movably arranged on the top of the mounting groove (11) and the through groove (26).

3. The tray for liquid nitrogen washing production as claimed in claim 2, characterized in that: The float valve frame (20) is located inside the through groove (26) and is connected to a mounting frame (30); one end of the mounting frame (30) passes through the mounting groove (11) and is clamped with the disk body (10).

4. The tray for liquid nitrogen washing production according to any one of claims 1 to 3, characterized in that: One side of the float valve (24) is bent to form a second bent portion (40), and one side of the second bent portion (40) is bent to form a wind shielding portion (41).

5. The tray for liquid nitrogen washing production according to any one of claims 1 to 3, characterized in that: The end of the float valve frame (20) is bent to form a third bent portion (50), an exhaust groove (51) is provided inside the third bent portion (50), and the top of the third bent portion (50) is bent to form a direction adjustment plate (52).

6. The tray for liquid nitrogen washing production as claimed in claim 1, characterized in that: A limiting strip (27) is punched out on one side of the first bent portion (21), and one end of the limiting strip (27) is connected to the first bent portion (21).

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