Acetic acid deiodination skid-mounted equipment

Abstract

The utility model relates to the technical field of acetic acid deiodination, in particular to acetic acid deiodination skid-mounted equipment, which comprises a resin bed, the resin bed comprises a bed body, the top of the bed body is provided with a gas phase equilibrium outlet, the bottom of the bed body is provided with a discharge port, and the outer side wall of the bed body is provided with a resin adding pipe positioned at the upper part and a resin discharge pipe positioned at the lower part. A grid plate positioned below the resin discharge pipe is arranged in the bed body, and a feeding hole is formed in the top of the bed body; a detachable filtering assembly is arranged at the discharging port and comprises a barrel communicated with the discharging port, a discharging pipe is arranged at the bottom end of the barrel, and a filtering piece and an activated carbon adsorption column are arranged in the barrel from top to bottom. According to the utility model, through the arrangement of the filtering assembly, the deiodinated acetic acid is filtered by the filtering assembly and is subjected to odor adsorption treatment, so that subsequent advanced treatment is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of acetic acid deiodination technology, specifically to an acetic acid deiodination skid-mounted device. Background Technology

[0002] Currently, in the acetic acid production process, catalyst systems are modified to increase yield and reduce consumption. While modified catalysts do increase production and reduce the use of catalysts and raw materials, the finished product contains a higher iodide content. Since iodide ions in the acetic acid feedstock affect catalyst performance, deiodination treatment of the acetic acid feedstock is necessary.

[0003] In existing technologies, deiodizing resin beds are commonly used for the deiodization of acetic acid. These beds primarily utilize the resin to adsorb organic and inorganic iodine from the acetic acid, thus achieving deiodization. However, during actual operation, resin shedding can mix with the acetic acid raw material, causing it to be discharged along with the raw material and enter subsequent advanced processing steps. Furthermore, if volatile odors remain after deiodization, these odors will also be discharged along with the raw material and enter subsequent advanced processing steps. The presence of impurities and volatile odors can negatively impact subsequent advanced processing. Utility Model Content

[0004] The purpose of this invention is to provide a skid-mounted acetic acid deiodization device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An acetic acid deiodization skid-mounted device includes a resin bed, which comprises a bed body. The top of the bed body has a gas phase equilibrium outlet, and the bottom of the bed body has a discharge port. The outer wall of the bed body has a resin inlet pipe located at the top and a resin outlet pipe located at the bottom. The bed body has a grid plate located below the resin outlet pipe. The top of the bed body has a feed inlet. The discharge port has a detachable filter assembly, which includes a cylinder connected to the discharge port. The bottom end of the cylinder has a discharge pipe. The cylinder has a filter element and an activated carbon adsorption column arranged from top to bottom.

[0007] Furthermore, the cylinder has openings at both ends, and an installation ring is provided circumferentially inside the cylinder. The filter element is vertically mounted in the cylinder above the installation ring, and the activated carbon adsorption column is located in the cylinder below the installation ring. A plug is provided at the lower opening of the cylinder, and the plug is used to press the activated carbon adsorption column onto the lower side wall of the installation ring.

[0008] Furthermore, the filter element includes a filter frame and a filter screen disposed within the filter frame. The filter element also includes a bracket disposed at the upper opening of the cylinder. A mounting rod is provided at the middle of the upper side of the filter frame, passing through the bracket. A nut is threadedly connected to the end of the mounting rod that passes through the bracket.

[0009] Furthermore, a spring is fitted on the mounting rod to push the filter frame downward; the plug is provided with a rotatable shaft that extends through the activated carbon adsorption column to the bottom of the filter frame, a drive column is provided at the top of the shaft, a stop rod is provided on the lower side wall of the filter frame to abut against the upper end surface of the drive column, a drive groove is provided at the upper end of the drive column for the stop rod to slide into, and a drive surface is provided on one side wall of the drive groove for the stop rod to slide out of the drive groove. The shaft drives the drive column to rotate to realize the up and down shaking of the filter frame.

[0010] Furthermore, a motor for driving the rotating shaft is provided on the lower side wall of the plug.

[0011] Furthermore, a detachable connecting cylinder is provided at the discharge port. The upper opening of the connecting cylinder extends outward to form a flange, and the lower opening of the connecting cylinder forms a threaded connection. The upper end of the cylinder is threadedly connected to the threaded connection.

[0012] Furthermore, the plug is provided with an abutment portion extending into the cylinder body, and the outer wall of the cylinder body is threaded with bolts that extend into the abutment portion.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, through the setting of the filter component, allows the acetic acid discharged from the outlet to enter the cylinder, where it is filtered by the filter element to remove impurities (such as resin) from the acetic acid and separate the resin from the product liquid; the activated carbon adsorption column can adsorb the odor of the filtered acetic acid. Thus, the acetic acid after deiodization is filtered and odor adsorbed by the filter component, so that it can be subjected to subsequent deep processing.

[0015] 2. In this utility model, a motor drives a rotating shaft to rotate a drive column. With the help of a spring, the continuous rotation of the drive column causes the filter frame and filter screen to vibrate up and down, thereby preventing impurities from clogging the filter screen and improving the filtration effect of the filter element. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a skid-mounted acetic acid deiodization device according to the present invention.

[0017] Figure 2 This is a cross-sectional schematic diagram of the resin bed in this utility model.

[0018] Figure 3 This is a schematic diagram of the filter assembly in this utility model.

[0019] Figure 4 This is a schematic diagram of the structure of the filter assembly in this utility model when the cylinder is partially cut.

[0020] Figure 5 This is a schematic diagram of the filter element in this utility model.

[0021] Figure 6 This is a schematic diagram of the plug structure in this utility model.

[0022] The meanings of the labels in the diagram are as follows:

[0023] 100. Resin bed; 101. Bed body; 102. Gas phase equilibrium outlet; 103. Resin inlet pipe; 104. Resin outlet pipe; 105. Feed inlet; 106. Support leg; 110. Filter assembly; 111. Cylinder body;

[0024] 201. Discharge port; 210. Grid plate;

[0025] 301. Drain pipe; 310. Plug; 311. Motor; 320. Connecting cylinder; 321. Flange; 322. Threaded connection;

[0026] 401. Mounting ring; 410. Activated carbon adsorption column; 420. Filter frame; 421. Mounting rod; 422. Nut; 430. Bracket; 440. Spring; 450. Rotating shaft; 451. Drive column;

[0027] 501. Stop bar;

[0028] 601, drive groove; 602, drive surface; 611, abutment part. Detailed Implementation

[0029] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative of this utility model and are not intended to limit it.

[0030] The following is in conjunction with the appendix Figures 1-6 This embodiment will be described in further detail.

[0031] like Figure 1 and Figure 2As shown, this embodiment of an acetic acid deiodization skid-mounted device is used to remove organic and inorganic iodine from acetic acid raw materials; it includes a resin bed 100, which includes a bed body 101. The top of the bed body 101 is provided with a gas phase equilibrium outlet 102, and the bottom of the bed body 101 is provided with a discharge port 201. The outer wall of the bed body 101 is provided with a resin inlet pipe 103 located at the top and a resin outlet pipe 104 located at the bottom. A grid plate 210 is provided inside the bed body 101 below the resin outlet pipe 104, and a feed inlet 105 is provided at the top of the bed body 101; specifically, as shown... Figure 2 As shown, the grid plate 210 is horizontally arranged and fixedly installed inside the bed body 101. The grid plate 210 is provided with a wire mesh for supporting the resin particles, thereby forming a resin placement space in the bed body 101 between the grid plate 210 and the resin inlet pipe 103. In actual use, resin particles can be added into the bed body 101 through the resin inlet pipe 103 and the resin particles can be accumulated on the grid plate 210. The resin particles in the resin placement space can be discharged through the resin outlet pipe 104, thereby facilitating the replacement of the resin particles.

[0032] In actual use, the outer ends of the resin inlet pipe 103 and the resin outlet pipe 104 are hinged with openable and closable plugs. The plugs are used to seal the resin inlet pipe 103 and the resin outlet pipe 104 to ensure that the resin bed 100 can perform acetic acid adsorption and deiodization.

[0033] Specifically, acetic acid raw material enters the bed 101 through the upper feed port 105. As the acetic acid raw material enters the bed 101, it moves downward due to gravity and flows through the resin particles in the resin placement space. The resin particles can adsorb the organic and inorganic iodine in the acetic acid raw material to achieve the deiodization treatment of the acetic acid raw material. The adsorbed acetic acid raw material flows through the wire mesh on the grid plate 210 to the bottom of the bed 101 and is discharged through the discharge port 201.

[0034] Combination Figure 3 and Figure 4 As shown, in this embodiment, a detachable filter assembly 110 is provided at the discharge port 201. The filter assembly 110 includes a cylinder 111 connected to the discharge port 201. A drain pipe 301 is provided at the bottom end of the cylinder 111. The cylinder 111 contains a filter element and an activated carbon adsorption column 410 arranged from top to bottom.

[0035] In this embodiment, the arrangement of the cylinder 111, filter element, and activated carbon adsorption column 410 allows the acetic acid discharged from the outlet 201 to enter the cylinder 111 and be filtered by the filter element, which can filter impurities (such as resin) in the acetic acid and separate the resin from the product liquid. The activated carbon adsorption column 410 can adsorb the odor of the filtered acetic acid. Thus, the acetic acid after deiodination is filtered by the filter element 110 and treated with odor adsorption before it can be subjected to subsequent deep processing.

[0036] Specifically, in order to install the filter assembly 110 below the bed body 101, in this embodiment, the bottom end of the bed body 101 is provided with support legs 106 for supporting it.

[0037] Combination Figure 3 and Figure 4 As shown, in this embodiment, the cylinder 111 has openings at both ends, and an installation ring 401 is provided circumferentially inside the cylinder 111. The installation ring 401 is integrally formed on the inner wall of the cylinder 111. The filter element is vertically and flexibly disposed inside the cylinder 111 above the installation ring 401. The activated carbon adsorption column 410 is disposed inside the cylinder 111 below the installation ring 401. The activated carbon adsorption column 410 is made of activated carbon and is used to adsorb odors in acetic acid. A plug 310 is provided at the lower opening of the cylinder 111. The plug 310 is used to press the activated carbon adsorption column 410 onto the lower side wall of the installation ring 401.

[0038] Specifically, the drain pipe 301 is located on the outer wall of the lower side of the cylinder 111, so that the acetic acid after being filtered by the filter element and adsorbed by the activated carbon adsorption column 410 can be discharged through the drain pipe 301.

[0039] In this embodiment, combined with Figure 6 As shown, the plug 310 is provided with an abutment part 611 extending into the cylinder 111, and a bolt is threaded on the outer wall of the cylinder 111 that extends into the abutment part 611, thereby enabling the plug 310 to be installed and removed at the lower end opening of the cylinder 111.

[0040] Specifically, the activated carbon adsorption column 410 is pushed upward by the abutment part 611, so that its upper end abuts against the lower side wall of the mounting ring 401, thereby achieving the press-fitting of the activated carbon adsorption column 410 inside the cylinder 111. In order to improve the sealing performance of the plug 310 installation, the upper side of the abutment part 611 is provided with a sealing gasket ring that abuts against the activated carbon adsorption column 410. When the abutment part 611 presses the activated carbon adsorption column 410, the outer side wall of the sealing gasket ring is deformed due to compression, making it fit more closely to the inner wall of the cylinder 111, thereby improving the sealing performance of the plug 310 installation.

[0041] Combination Figure 5 and Figure 6As shown, in this embodiment, the filter element includes a filter frame 420 and a filter screen disposed within the filter frame 420. The filter frame 420 is horizontally arranged, and the outer wall of the filter frame 420 slides against the inner wall of the cylinder 111 to reduce the gap between them and improve the filtration effect of the filter element. The filter element also includes a bracket 430 disposed at the upper opening of the cylinder 111. Specifically, the bracket 430 is fixedly installed in the cylinder 111 by screws. An installation rod 421 is provided at the middle of the upper side of the filter frame 420, passing through the bracket 430. A nut 422 is threadedly connected to the end of the installation rod 421 that passes through the bracket 430. Therefore, under the action of gravity, the filter frame 420 and the installation rod 421 move downward so that the nut 422 overlaps the bracket 430, thereby realizing the installation of the filter frame 420 and the filter screen.

[0042] In this embodiment, a spring 440 is sleeved on the mounting rod 421 to push the filter frame 420 downward. The upper end of the spring 440 abuts against the bracket 430 and the lower end abuts against the filter frame 420, so that the spring 440 always pushes the filter frame 420 downward.

[0043] The plug 310 is provided with a rotatable shaft 450 that extends through the activated carbon adsorption column 410 to the bottom of the filter frame 420. Specifically, the lower end of the shaft 450 is rotatably mounted on the plug 310 via a bearing. In order to realize the rotation of the shaft 450, the lower side wall of the plug 310 is provided with a motor 311 for driving the shaft 450 to rotate. The top end of the shaft 450 is provided with a drive column 451. The lower side wall of the filter frame 420 is provided with a push rod 501 that abuts against the upper end surface of the drive column 451. The upper end of the drive column 451 is provided with a drive groove 601 into which the push rod 501 slides. One side wall of the drive groove 601 is provided with a drive surface 602 for the push rod 501 to slide out of the drive groove 601. The shaft 450 drives the drive column 451 to rotate to realize the up and down shaking of the filter frame 420.

[0044] In actual use, the outer wall of the mounting rod 421 is provided with a positioning groove along its axial direction, and the bracket 430 is provided with a positioning block that slides in the positioning groove. In this way, the mounting rod 421 is restricted so that it cannot rotate circumferentially, that is, the filter frame 420 is fixed and cannot rotate circumferentially.

[0045] In this embodiment, under the action of the spring 440, the abutment 501 abuts against the top surface of the drive column 451 or inside the drive groove 601. One side wall of the drive groove 601 forms a drive surface 602, and the other side wall forms a vertical surface. Thus, when the rotating shaft 450 drives the drive column 451 to rotate, it in turn drives the drive groove 601 to rotate. Under the action of the spring 440, the abutment 501 slides into the drive groove 601 along the vertical groove and impacts the bottom wall of the drive groove 601, causing the filter frame 420 and the filter screen to vibrate. Alternatively, it slides out of the drive groove 601 along the drive surface 602, thereby causing the filter frame 420 and the filter screen to move upward. Thus, under the continuous rotation of the drive column 451, the filter frame 420 and the filter screen can vibrate up and down to avoid impurities clogging the filter screen and improve its filtration effect.

[0046] In this embodiment, a detachable connecting cylinder 320 is provided at the discharge port 201. The upper opening of the connecting cylinder 320 extends outward to form a flange 321. The flange 321 is bolted to the flange of the discharge port 201, thereby realizing the fixed installation of the connecting cylinder 320 at the discharge port 201. The lower opening of the connecting cylinder 320 forms a threaded connection 322. The upper end of the cylinder 111 is threadedly connected to the threaded connection 322. This better realizes the disassembly and assembly of the cylinder 111 on the connecting cylinder 320, so that the cylinder 111 can be removed to clean the impurities on the filter screen.

[0047] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. An acetic acid deiodization skid-mounted device, comprising a resin bed (100), characterized in that: The resin bed (100) includes a bed body (101), a gas phase equilibrium outlet (102) at the top of the bed body (101), a discharge port (201) at the bottom of the bed body (101), a resin inlet pipe (103) at the top and a resin outlet pipe (104) at the bottom on the outer side wall of the bed body (101), a grid plate (210) below the resin outlet pipe (104) inside the bed body (101), and a feed inlet (105) at the top of the bed body (101); a detachable filter assembly (110) is provided at the discharge port (201), the filter assembly (110) includes a cylinder (111) connected to the discharge port (201), a drain pipe (301) at the bottom end of the cylinder (111), and a filter element and an activated carbon adsorption column (410) arranged from top to bottom inside the cylinder (111).

2. The acetic acid deiodization skid-mounted equipment according to claim 1, characterized in that: The cylinder (111) has openings at both ends. An installation ring (401) is provided along its circumference inside the cylinder (111). The filter element is installed in the cylinder (111) above the installation ring (401) in a liftable manner. The activated carbon adsorption column (410) is installed in the cylinder (111) below the installation ring (401). A plug (310) is provided at the lower opening of the cylinder (111). The plug (310) is used to press the activated carbon adsorption column (410) onto the lower side wall of the installation ring (401).

3. The acetic acid deiodization skid-mounted equipment according to claim 2, characterized in that: The filter element includes a filter frame (420) and a filter screen disposed in the filter frame (420). The filter element also includes a bracket (430) disposed at the upper opening of the cylinder (111). A mounting rod (421) is provided at the middle of the upper side of the filter frame (420) and passes through the bracket (430). A nut (422) is threadedly connected to the end of the mounting rod (421) that passes through the bracket (430).

4. The acetic acid deiodization skid-mounted equipment according to claim 3, characterized in that: A spring (440) is fitted on the mounting rod (421) to push the filter frame (420) down; a rotating shaft (450) is provided on the plug (310) and extends through the activated carbon adsorption column (410) to the bottom of the filter frame (420). A drive column (451) is provided at the top of the rotating shaft (450). A push rod (501) is provided on the lower side wall of the filter frame (420) and abuts against the upper end surface of the drive column (451). A drive groove (601) is provided at the upper end of the drive column (451) for the push rod (501) to slide into. A drive surface (602) is provided on one side wall of the drive groove (601) for the push rod (501) to slide out of the drive groove (601). The rotating shaft (450) drives the drive column (451) to rotate to realize the up and down shaking of the filter frame (420).

5. The acetic acid deiodization skid-mounted equipment according to claim 4, characterized in that: The lower side wall of the plug (310) is provided with a motor (311) for driving the rotating shaft (450) to rotate.

6. The acetic acid deiodization skid-mounted equipment according to claim 2, characterized in that: A detachable connecting cylinder (320) is provided at the discharge port (201). The upper opening of the connecting cylinder (320) extends outward to form a flange (321), and the lower opening of the connecting cylinder (320) forms a threaded connection (322). The upper end of the cylinder (111) is threadedly connected to the threaded connection (322).

7. The acetic acid deiodization skid-mounted equipment according to claim 6, characterized in that: The plug (310) is provided with an abutment part (611) extending into the cylinder (111), and the outer wall of the cylinder (111) is threaded with a bolt extending into the abutment part (611).

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