Rapid ammonia gas absorption device for anthranilic acid production

Abstract

The invention relates to the technical field of ammonia gas treatment, in particular to a rapid ammonia gas absorption device for anthranilic acid production. Comprising a reaction tank in which a pressure sensor is arranged; the liquid spraying pieces are fixedly connected into the reaction tank, and a containing frame is fixedly connected into the reaction tank; the porous ring is arranged in the reaction tank, the porous ring is fixedly connected with a supporting frame, the porous ring is connected with a sliding frame in a sliding mode, and the porous ring is fixedly connected with a limiting ring used for blocking the sliding frame; the sliding blocks and the connecting rods are distributed annularly and are connected to the lower side of the reaction tank in a sliding manner. When the internal pressure of the spray tower is detected to exceed the preset working pressure, the layout of the filler layer is optimized to improve the contact effect between the absorption liquid and the filler layer, and meanwhile, impurities and crystal substances on the filler layer can be effectively removed and prevented from being accumulated in a physical vibration manner, so that the long-term stable and efficient operation of the spray tower is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of ammonia treatment, in particular to an ammonia rapid absorption device for producing anthranilic acid. Background Art

[0002] In the chemical industry, the production of o-aminobenzoic acid is often achieved through the reduction of o-nitrobenzoic acid (such as iron powder / hydrochloric acid system). This process usually does not directly use ammonia. However, in certain processes (such as ammonolysis reaction), ammonia participates in the reaction as a raw material. In addition, o-aminobenzoic acid will undergo a deamination reaction under severe conditions (such as concentrated sulfuric acid and high temperature) to generate o-hydroxybenzoic acid and release ammonia. Therefore, ammonia needs to be recovered according to the process route during production (whether it is unreacted raw material ammonia or ammonia produced by side reactions).

[0003] Among them, the spray tower is a key equipment for ammonia absorption, and the stability of its packing layer directly affects the ammonia recovery efficiency. However, in actual operation, due to the dynamic changes of the absorption liquid composition and process conditions (such as pH fluctuations, temperature and pressure fluctuations, impurity entrainment, etc.), the packing layer is prone to crystal deposition and impurity enrichment. This operating condition will not only reduce the ammonia absorption efficiency and cause process material loss, but also cause abnormal stress in the tower structure due to the increase in system pressure difference. Long-term accumulation will accelerate equipment fatigue damage, thus forming a technical contradiction between production process optimization and equipment maintenance. Summary of the invention

[0004] In order to overcome the problems mentioned in the above technical solution, the present invention provides an ammonia rapid absorption device for producing anthranilic acid.

[0005] The technical solution of the present invention is: a rapid ammonia absorption device for producing anthranilic acid, comprising:

[0006] A reaction tank, wherein a pressure sensor is arranged in the reaction tank;

[0007] A plurality of liquid spraying parts are fixedly connected in the reaction tank, and a containing rack is fixedly connected in the reaction tank;

[0008] A porous ring is arranged in the reaction tank, a support frame is fixedly connected to the lower side of the porous ring, a sliding frame is slidably connected to the upper side of the porous ring, and a limiting ring for blocking the sliding frame is fixedly connected to the porous ring;

[0009] The sliding blocks and connecting rods are distributed in an annular manner, and are both slidably connected to the lower side of the reaction tank. The connecting rods penetrate the sliding blocks and are fixedly connected to the porous rings. The connecting rods are rotatably connected to the adjacent sliding blocks.

[0010] A first driving member, disposed on the reaction tank, the first driving member being transmission-connected to the adjacent connecting rod;

[0011] The first driving assembly is arranged on the reaction tank and is used for driving the porous ring to move.

[0012] Preferably, a filling layer is stored between the sliding frame and the supporting frame and in the containing frame, and an arc rod is fixedly connected to the sliding frame and the supporting frame for preventing the filling layer from falling. The supporting frame is composed of a cylinder and an annular array of inclined plates, and the height of the facing sides of the annular array inclined plates in the supporting frame is lower than the height of the back side thereof.

[0013] Preferably, the cross-section of the inclined plate within the support frame is composed of a rectangle and a triangle, which is used to guide water droplets condensed from moisture.

[0014] Preferably, the diameter of the holding rack is consistent with the inner diameter of the reaction tank, the diameter of the porous ring is smaller than the diameter of the holding rack, and a first elastic member in contact with the porous ring is fixed inside the reaction tank.

[0015] Preferably, the first driving assembly comprises:

[0016] The second elastic members, the number of which is the same as that of the sliding blocks, are all fixedly connected to the reaction tank, and the telescopic ends of the second elastic members are fixedly connected to the adjacent sliding blocks;

[0017] The second driving member is arranged on the reaction tank, and the telescopic end of the second driving member is fixedly connected to a fixed platform, and the fixed platform is rotatably connected to a symmetrical swing frame, and the symmetrical swing frames are used to drive the adjacent connecting rods to move, and a third elastic member is fixedly connected between the swing frame and the fixed platform.

[0018] Preferably, a fourth elastic member in contact with the reaction tank is fixedly connected to the lower side of the sliding block, and opposing sides of the sliding blocks in the annular array are fixedly connected to shielding plates that slide along the reaction tank, and the connecting rod passes through adjacent shielding plates and is rotatably connected thereto.

[0019] As a preference, it also includes:

[0020] A second driving assembly is disposed on the support frame and is used to drive the sliding frame to move. The second driving assembly includes:

[0021] A first liquid holding member, fixedly connected to the support frame;

[0022] a first sliding member, slidably connected to the first liquid holding member, the first sliding member being fixedly connected to the sliding frame;

[0023] A protective shell, fixedly connected to the sliding block away from the second driving member, wherein a second liquid containing member is disposed in the protective shell;

[0024] The second sliding member is slidably connected to the protective shell, the second sliding member is fixedly connected to the adjacent connecting rod, the second sliding member is used to squeeze the second liquid holding member, the second liquid holding member is fixedly connected to the first sliding member and is connected by a liquid passage that runs through the protective shell and the adjacent connecting rod.

[0025] Preferably, a sliding plate located below the first sliding member is sealed and slidably connected inside the first liquid holding member, the first sliding member is not sealed with the first liquid holding member, a tension spring is fixedly connected between the first sliding member and the sliding plate, and the first sliding member is fixedly connected to a limit column in contact with the sliding plate for limiting the relative position of the first sliding member and the sliding plate.

[0026] As a preference, it also includes:

[0027] A fixed shell is fixedly connected in the reaction tank, the fixed shell is fixedly connected to the liquid spraying member close to the porous ring, a liquid guide cavity is arranged in the fixed shell, a truncated cone-shaped through hole communicating with the liquid guide cavity is arranged on the upper side of the fixed shell, the reaction tank is fixedly connected and communicated with a second liquid guide tube, and the second liquid guide tube is used to connect the liquid guide cavity and the first elastic member with the lower part in the reaction tank.

[0028] Preferably, the fixed shell is fixedly connected with a guide pipe, and the guide pipe is used to guide the ammonia gas on the lower side upward.

[0029] The beneficial effect is that the present invention aims at the problems of impurities and crystal accumulation in the packing layer encountered by the traditional spray tower in the process of treating ammonia, and actively introduces a real-time pressure detection system. When it is detected that the internal pressure of the spray tower exceeds the preset working pressure, the system will automatically optimize the layout of the packing layer to improve the contact effect between the absorption liquid and the packing layer. At the same time, through physical vibration, impurities and crystals on the packing layer can be effectively removed to prevent their accumulation, thereby ensuring the long-term stable and efficient operation of the spray tower, and the packing layer can quickly process ammonia by changing the initial packing layer material rack to achieve the effect of rapid absorption of ammonia molecules.

[0030] In order to solve the problem that in the existing spray tower, the design of the two layers of packing layers and the spray parts causes the droplets falling when the upper side processes ammonia to fall into the lower packing layer, causing the local liquid film to be too thick, blocking the gas flow path, forming a "fixed blocking area", and thus reducing the gas treatment efficiency, the present invention adds a partition plate in the spray tower to allow the gas to flow smoothly upward and ensure that the upper droplets are directly discharged and no longer flow downward, thereby improving the gas treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0032] Figure 2 It is another perspective schematic diagram of the three-dimensional structure of the present invention;

[0033] Figure 3 It is a three-dimensional structural cross-sectional view of the reaction tank of the present invention;

[0034] Figure 4 It is a three-dimensional structural cross-sectional view of the fixed shell of the present invention;

[0035] Figure 5 It is a sectional view of the three-dimensional structure of the porous ring of the present invention;

[0036] Figure 6 It is a schematic diagram of the three-dimensional structure of the first sliding member and the limiting ring of the present invention;

[0037] Figure 7 It is a schematic diagram of the three-dimensional structure of the swing frame and the third elastic member of the present invention;

[0038] Figure 8 It is a schematic diagram of the three-dimensional structure of the first liquid holding member and the support frame of the present invention;

[0039] Fig. 9 It is a sectional view of the three-dimensional structure of the first liquid holding member of the present invention.

[0040] Markings in the accompanying drawings: 10-reaction tank, 11-feeding pipe, 12-first liquid guide tube, 13-liquid spraying member, 14-holding frame, 140-porous ring, 141-support frame, 142-sliding frame, 143-limiting ring, 15-first elastic member, 16-sliding block, 17-connecting rod, 18-first driving member, 20-second elastic member, 21-second driving member, 22-fixed table, 23-swinging frame, 24-third elastic member, 30-fourth elastic member, 40-baffle plate, 50-first liquid holding member, 51-first sliding member, 510-sliding plate, 52-protective shell, 53-second liquid holding member, 54-second sliding member, 60-fixed shell, 61-guide tube, 62-liquid guide cavity, 63-second liquid guide tube. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.

[0042] The present invention aims to solve the problems caused by the accumulation of impurities or crystals in the packing layer of the traditional spray tower. These problems will not only reduce the treatment efficiency of ammonia, but also increase the internal pressure of the spray tower, thereby affecting the structural strength of the equipment. To this end, the present invention adopts a method for real-time detection of the internal pressure of the spray tower. When the internal pressure exceeds the set working pressure, the system will automatically adjust the layout of the packing layer to enhance the contact between the absorption liquid and the packing layer, and shake off the impurities or crystals on the packing layer by physical vibration, thereby ensuring the long-term and efficient operation of the spray tower.

[0043] Example 1: A rapid ammonia absorption device for producing anthranilic acid, such as Figure 1-Figure 6 As shown, it includes: a reaction tank 10, the upper side of the reaction tank 10 is an air outlet, the lower side of the reaction tank 10 is fixedly connected and connected with a feed pipe 11 and a first liquid guide pipe 12, a pressure sensor is arranged in the reaction tank 10, and the pressure sensor is located on the right side of the lower part of the reaction tank 10; a plurality of liquid spraying parts 13 are fixedly connected in the reaction tank 10, a holding rack 14 is fixedly connected in the reaction tank 10, and the holding rack 14 is located between the plurality of liquid spraying parts 13; a porous ring 140 is arranged The porous ring 140 is in the reaction tank 10 and is located below the containing rack 14. The lower side of the porous ring 140 is fixedly connected to a supporting rack 141. The upper side of the porous ring 140 is slidably connected to a sliding rack 142. A limiting ring 143 for blocking the sliding rack 142 is fixedly connected to the side of the porous ring 140 away from the supporting rack 141. A packing layer is stored between the sliding rack 142 and the supporting rack 141 and in the containing rack 14. The sliding rack 142 and the supporting rack 141 are fixedly connected to the limiting ring 143 for blocking the sliding rack 142. The arc-shaped rod that blocks the packing layer from falling changes the distance between the sliding frame 142 and the support frame 141, thereby changing the state of the packing layer between the two; the annularly distributed sliding blocks 16 and connecting rods 17 are both slidably connected to the lower side of the reaction tank 10, the connecting rod 17 passes through the sliding block 16 and is fixedly connected to the porous ring 140, and the connecting rod 17 is rotatably connected to the adjacent sliding block 16; the first driving member 18 is arranged on one side of the reaction tank 10, and the first driving member 18 is transmission-connected to the adjacent connecting rod 17; the first driving assembly is arranged on the reaction tank 10, and is used to drive the porous ring 140 to move, the support frame 141 is composed of a cylindrical and annular array of inclined plates, the height of the facing sides of the annular array inclined plates in the support frame 141 is lower than the height of the back side thereof, which is used to increase the initial contact area between the ammonia gas and the packing layer, and the cross-section of the inclined plates in the support frame 141 is composed of rectangles and triangles, which is used to guide the water droplets condensed from moisture.

[0044] In the above scheme, two slide grooves of an annular array are arranged on the lower side of the reaction tank 10, and the sliding block 16 and the adjacent connecting rod 17 both slide in the adjacent slide grooves in the reaction tank 10, and the sliding block 16 and the adjacent connecting rod 17 are initially located on the lower side of the adjacent slide grooves in the reaction tank 10, and the porous ring 140 is driven by the connecting rod 17 to slide back and forth in the slide groove in the reaction tank 10, so that the reciprocating vibration of the packing layer in the porous ring 140 is caused to shake off the impurities and crystals in the packing layer, and when the distance between the sliding frame 142 and the supporting frame 141 becomes larger, the packing layer is in a loose state between the sliding frame 142 and the supporting frame 141, and the packing layer mentioned in the present invention is composed of a plurality of spherical fillers, and the first driving member 18 is a self-locking motor, and the driving shaft of the first driving member 18 is connected to the connecting rod 17 on the right side through a telescopic universal coupling (not shown in the figure).

[0045] like Figure 3 and Figure 5 As shown, the diameter of the holding rack 14 is consistent with the inner diameter of the reaction tank 10 , the diameter of the porous ring 140 is smaller than the diameter of the holding rack 14 , and a first elastic member 15 in contact with the porous ring 140 is fixedly connected in the reaction tank 10 .

[0046] In the above solution, the first elastic member 15 is an elastic bellows, and when the connecting rod 17 is located at the lower side of the adjacent chute in the reaction tank 10, the first elastic member 15 is in a compressed state.

[0047] like Figure 3 and Figure 5-Figure 7 As shown, the first driving assembly includes: second elastic members 20, the same number as the sliding blocks 16, are all fixedly connected to the reaction tank 10, and the telescopic ends of the second elastic members 20 are fixedly connected to the adjacent sliding blocks 16; a second driving member 21, arranged in the reaction tank 10, and the telescopic ends of the second driving member 21 are fixedly connected to a fixed platform 22, and the fixed platform 22 is rotatably connected to symmetrical swing frames 23, and the symmetrical swing frames 23 are all used to drive the adjacent connecting rods 17 to move, and a third elastic member 24 is fixedly connected between the swing frame 23 and the fixed platform 22.

[0048] In the above scheme, the second elastic member 20 is a multi-stage spring telescopic rod, the second elastic member 20 is used to drive the adjacent sliding block 16 to reset, the second driving member 21 is a multi-stage electric push rod, and there are two symmetrical swing frames 23 distributed front and back, and the swing frame 23 is composed of a semicircular ring and an arc block. The arc block is located on the lower side of the semicircular ring, which is used to facilitate the two swing frames 23 to embrace and fix the adjacent connecting rods 17. The third elastic member 24 is a spring sheet, and the supporting force provided by the third elastic member 24 is greater than the supporting force of the second elastic member 20.

[0049] like Figure 5-Figure 7As shown, a fourth elastic member 30 in contact with the reaction tank 10 is fixedly connected to the lower side of the sliding block 16, and baffle plates 40 sliding along the reaction tank 10 are fixedly connected to the opposite sides of the annular array sliding blocks 16, and the connecting rod 17 passes through the adjacent baffle plates 40 and is rotatably connected thereto.

[0050] In the above solution, the fourth elastic member 30 is a spring sheet, which is used to prevent the sliding block 16 from hard collision with the reaction tank 10 , and the shielding plate 40 is used to shield the adjacent sliding groove on the reaction tank 10 .

[0051] like Figure 6 , Figure 8 and Fig. 9 As shown, it also includes: a second driving component, which is arranged on the support frame 141 and is used to drive the sliding frame 142 to move. The second driving component includes: a first liquid holding member 50, which is fixedly connected to the support frame 141; a first sliding member 51, which is slidably connected to the first liquid holding member 50, and the first sliding member 51 is fixedly connected to the sliding frame 142; a protective shell 52, which is fixedly connected to the sliding block 16 away from the second driving member 21, and a second liquid holding member 53 is arranged in the protective shell 52; a second sliding member 54, which is slidably connected to the protective shell 52, and the second sliding member 54 is fixedly connected to the adjacent connecting rod 17, and the second sliding member 54 is used to squeeze the second liquid holding member 53, and the second liquid holding member 53 is fixedly connected to the first sliding member 51 and is connected by a liquid pipe that runs through the protective shell 52 and the adjacent connecting rod 17.

[0052] In the above scheme, hydraulic oil is stored in the first liquid holding member 50. When the first sliding member 51 moves upward in the first liquid holding member 50, the distance between the sliding frame 142 and the supporting frame 141 is increased, so that the filling layer is in a loose state. The second liquid holding member 53 is an elastic liquid bag. Hydraulic oil is stored in the second liquid holding member 53. Hydraulic oil is stored in the liquid pipe between the second liquid holding member 53 and the first sliding member 51.

[0053] like Fig. 9 As shown, the first liquid holding member 50 is sealed and slidably connected with a sliding plate 510 located below the first sliding member 51. The first sliding member 51 is not sealed with the first liquid holding member 50. A tension spring is fixedly connected between the first sliding member 51 and the sliding plate 510. The first sliding member 51 is fixedly connected with a limit column in contact with the sliding plate 510. The limit column is used to limit the relative position of the first sliding member 51 and the sliding plate 510.

[0054] In the above solution, the tension spring between the sliding plate 510 and the first sliding member 51 is used to continuously provide tension to the first sliding member 51 , so that the first sliding member 51 can drive the sliding frame 142 to apply a compressive force to the packing layer.

[0055] Working principle: When it is necessary to use this device to treat ammonia in the production process of o-aminobenzoic acid, the staff will connect the external vacuum equipment, external air delivery equipment, external liquid vacuum equipment and external liquid delivery equipment to the air outlet on the upper side of the reaction tank 10, the left side of the feed pipe 11, the right side of the first liquid guide pipe 12 and the rear side of the two liquid spraying parts 13, thereby completing the preparation actions before the use of this device.

[0056] After completing the preparation actions before using the device, the staff delivers the absorption liquid into the two spray parts 13 through an external liquid delivery device, and the absorption liquid is then sprayed out from the lower sides of the two spray parts 13. When the absorption liquid sprayed by the spray parts 13 contacts the adjacent packing layer on the lower side, part of the absorption liquid wraps the packing layer, and the other part of the absorption liquid falls to the bottom of the reaction tank 10.

[0057] After the liquid injection continues for a period of time, the external vacuum equipment extracts the gas in the reaction tank 10, and the external gas supply equipment transports the ammonia to be treated into the reaction tank 10. After the ammonia enters the lower side of the reaction tank 10, it moves upward and passes through the support frame 141. The ammonia then contacts the packing layer on the upper side of the support frame 141, and is treated by the absorption liquid on the packing layer. Some of the by-products generated during the treatment of the ammonia fall freely downward, and the other part adheres to the packing layer.

[0058] During the treatment of ammonia, due to the inconsistent heights of the inner and outer annular array inclined plates within the support frame 141, the treatment effect of ammonia per unit time is enhanced. As the ammonia is absorbed by the absorption liquid, the humidity in the reaction tank 10 will increase to form moisture, which will condense on the lower side of the support frame 141. The condensed water droplets flow along the lower side of the support frame 141. Under the action of the inclined plates within the support frame 141, the retention time of the water droplets on the lower side of the support frame 141 is reduced, preventing ammonia from driving the water droplets on the lower side of the support frame 141 to move upward again, thereby reducing the subsequent treatment efficiency. When the water droplets quickly slide from the inner side of the support frame 141 to the outer side, they slide downward along the inner side of the first elastic member 15 into the reaction tank 10.

[0059] During the process of injecting the absorption liquid into the reaction tank 10, the liquid level of the absorption liquid in the reaction tank 10 is controlled by an external liquid pumping device. After the liquid level of the absorption liquid exceeds the required height for working, the external liquid pumping device extracts the absorption liquid in the reaction tank 10 through the first liquid conduit 12 (in the above process, the pressure sensor on the lower side of the reaction tank 10 detects the pressure therein in real time).

[0060] When the pressure in the reaction tank 10 increases, the pressure sensor in the reaction tank 10 transmits an electrical signal to the staff, and the staff reduces the air supply in the external air supply device. The staff then controls the driving shaft of the first driving member 18 to rotate. The driving shaft of the first driving member 18 drives the connecting rod 17 on the right to rotate clockwise (viewed from left to right) through the retractable universal coupling.

[0061] During the rotation of the right connecting rod 17, the porous ring 140 is driven to rotate, and the porous ring 140 drives the parts thereon to rotate clockwise. During the rotation of the connecting rod 17, the second sliding member 54 is driven to slide along the protective shell 52 and squeeze the second liquid holding member 53, so that the hydraulic oil in the second liquid holding member 53 enters the first liquid holding member 50 through the liquid passing pipe, increases the pressure in the first liquid holding member 50 and drives the sliding plate 510 to move upward, and the sliding plate 510 drives the first sliding member 51 to move upward synchronously through the tension spring and the limit column. During the movement of the first sliding member 51, it drives the sliding frame 142 to move synchronously, so that the sliding frame 142 moves in the direction of the limit ring 143.

[0062] The surrounding packing layer is no longer squeezed during the movement of the sliding frame 142, so that the packing layer becomes loose, and the packing layer can move freely during the rotation of the porous ring 140, thereby changing the layout of the packing layer.

[0063] When the porous ring 140 rotates 90°, the driving shaft of the first driving member 18 stops rotating and self-locks. At this time, the sliding frame 142 has moved to fit with the limit ring 143, and then the telescopic part of the second driving member 21 is retracted by the staff. During the movement of the telescopic part of the second driving member 21, the adjacent connecting rod 17 is pulled by the fixed platform 22 and the two swing frames 23, so that the connecting rod 17 drives the porous ring 140 and its accessory parts to move upward. During the movement of the connecting rod 17, the sliding block 16 squeezes the telescopic part of the second elastic member 20 (the telescopic part of the second elastic member 20 accumulates force) and drives the adjacent baffle plate 40 to move synchronously (the baffle plate 40 blocks the adjacent slide grooves on the reaction tank 10 during the movement). During the movement of the above-mentioned parts, the parts on the corresponding side of the other side all move synchronously and the movements are consistent.

[0064] When the connecting rod 17 moves to fit with the upper side of the adjacent slide groove in the reaction tank 10, the connecting rod 17 and the porous ring 140 stop moving. At that time, the telescopic part of the second driving member 21 still moves upward. During the upward movement of the two swing frames 23 along with the fixed platform 22, the lower sides of the two swing frames 23 are stretched open by the adjacent connecting rod 17, so that the two swing frames 23 swing back to back and deform the adjacent third elastic member 24.

[0065] When the two swing frames 23 are no longer in contact with the adjacent connecting rod 17 (the third elastic member 24 drives the adjacent swing frames 23 to reset), the connecting rod 17 drives the porous ring 140 and its accessory parts to move downward rapidly under the action of the rebound provided by the adjacent second elastic member 20, and the impurities and crystals on the packing layer in the porous ring 140 are shaken off. The fourth elastic member 30 slides downward with the connecting rod 17 and contacts the reaction tank 10 to provide a buffer.

[0066] When repeated shaking is required, the telescopic portion of the second driving member 21 drives the fixed platform 22 to move downward, and the fixed platform 22 drives the two swing frames 23 to move downward synchronously, so that the lower sides of the two swing frames 23 first contact the adjacent connecting rods 17, and under the action of the fixed platform 22 continuing to move downward, the lower sides of the two swing frames 23 are first stretched open, and then the two swing frames 23 embrace the adjacent connecting rods 17, which can be referred to Figure 7 The state in the middle, the subsequent action of the porous ring 140 moving upward again can be repeated as described above.

[0067] When it is no longer necessary to shake the packing layer, the driving shaft of the first driving member 18 drives the right connecting rod 17 to rotate 90° in the opposite direction through the telescopic universal coupling. During the rotation of the connecting rod 17, the porous ring 140 and the second sliding member 54 are driven to rotate synchronously. During the resetting of the second sliding member 54, the second liquid holding member 53 is no longer squeezed. The second liquid holding member 53 is reset under the action of its own elastic force and the hydraulic oil in the liquid pipe is extracted, so as to reduce the pressure in the first liquid holding member 50, so that the sliding plate 510 drives the first sliding member 51 to reset through the tension spring, and the first sliding member 51 then drives the sliding frame 142 to reset. During the movement of the sliding frame 142, it gradually moves away from the limiting ring 143 and squeezes the surrounding packing layer, so that the packing layer becomes compact again.

[0068] After the above operations, the staff restores the gas supply volume in the external gas supply equipment. When the ammonia treatment is completed, the staff can turn off all the electrical components mentioned above.

[0069] In the existing spray tower, two layers of packing layers and two layers of spray parts are usually provided, and the spray parts are located above the adjacent packing layers. When the upper packing layer and the spray parts treat ammonia gas, the droplets falling from the upper side will fall into the lower packing layer. When the two layers of liquid meet at the lower packing layer, it may cause the liquid film in the local area to be too thick, thereby obstructing the gas flow path and forming a "fixed blocking area", thereby reducing the efficiency of gas treatment on the upper side of the spray tower. In order to solve the above problems, the present invention adds a partition plate in the spray tower to enable the gas to move upward smoothly and ensure that the liquid flowing down from the upper side will be directly discharged and no longer continue to flow downward, thereby improving the gas treatment efficiency.

[0070] Embodiment 2: Based on embodiment 1, Figure 3 and Figure 4 As shown, it also includes: a fixed shell 60, which is fixedly connected to the reaction tank 10, the fixed shell 60 is fixedly connected to the liquid spraying member 13 close to the porous ring 140, a liquid guide cavity 62 is arranged in the fixed shell 60, and a truncated cone-shaped through hole connected to the liquid guide cavity 62 is arranged on the upper side of the fixed shell 60, the reaction tank 10 is fixedly connected and connected with a second liquid guide pipe 63, the second liquid guide pipe 63 is used to connect the liquid guide cavity 62 and the first elastic member 15 with the lower part of the reaction tank 10, and the fixed shell 60 is fixedly connected with a guide pipe 61, and the guide pipe 61 is used to guide the ammonia gas on the lower side upward.

[0071] In the above solution, a liquid guide groove can be provided on the upper side of the fixed shell 60 according to actual conditions to facilitate the flow of liquid on the upper side of the fixed shell 60 , and the truncated cone-shaped through hole of the fixed shell 60 is used to guide the liquid into the liquid guide cavity 62 .

[0072] Working principle: In the process of treating ammonia, the ammonia moving upward moves smoothly upward through all the guide tubes 61 and contacts the packing layer on the upper side, so as to achieve the treatment of ammonia. The liquid produced by the reaction on the upper side of the reaction tank 10 falls downward to the upper side of the fixed shell 60, and enters the liquid guide cavity 62 through the adjacent truncated cone-shaped through hole under the guidance of the upper side of the fixed shell 60, so that the liquid can enter the second liquid guide tube 63 along the liquid guide cavity 62, and is guided to the lower side of the reaction tank 10 by the second liquid guide tube 63.

[0073] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rapid ammonia absorption device for the production of anthranilic acid, characterized in that: include: A reaction tank (10), wherein a pressure sensor is arranged in the reaction tank (10); A plurality of liquid spraying parts (13) are fixedly connected in the reaction tank (10), and a containing rack (14) is fixedly connected in the reaction tank (10); A porous ring (140) is arranged in the reaction tank (10); a support frame (141) is fixedly connected to the lower side of the porous ring (140); a sliding frame (142) is slidably connected to the upper side of the porous ring (140); and a limiting ring (143) for blocking the sliding frame (142) is fixedly connected to the porous ring (140); an annularly distributed sliding block (16) and a connecting rod (17) are both slidably connected to the lower side of the reaction tank (10); the connecting rod (17) passes through the sliding block (16) and is fixedly connected to the porous ring (140); and the connecting rod (17) is rotatably connected to the adjacent sliding block (16); A first driving member (18) is disposed on the reaction tank (10), and the first driving member (18) is drivingly connected to the adjacent connecting rod (17); A first driving assembly is arranged on the reaction tank (10) and is used to drive the porous ring (140) to move.

2. The ammonia rapid absorption device for producing anthranilic acid according to claim 1, characterized in that: A packing layer is stored between the sliding frame (142) and the supporting frame (141) and in the containing frame (14); an arc-shaped rod for preventing the packing layer from falling is fixedly connected to the sliding frame (142) and the supporting frame (141); the supporting frame (141) is composed of a cylinder and an annular array of inclined plates; the height of the facing sides of the annular array of inclined plates in the supporting frame (141) is lower than the height of the back-facing side thereof.

3. The ammonia rapid absorption device for the production of anthranilic acid according to claim 2, characterized in that: The cross section of the inner inclined plate of the support frame (141) is composed of a rectangle and a triangle, and is used to guide water droplets condensed from moisture.

4. The ammonia rapid absorption device for producing anthranilic acid according to claim 1, characterized in that: The diameter of the holding rack (14) is consistent with the inner diameter of the reaction tank (10), the diameter of the porous ring (140) is smaller than the diameter of the holding rack (14), and a first elastic member (15) in contact with the porous ring (140) is fixedly connected inside the reaction tank (10).

5. The ammonia rapid absorption device for producing anthranilic acid according to claim 4, characterized in that: The first driving assembly comprises: The second elastic members (20) are the same in number as the sliding blocks (16) and are all fixedly connected to the reaction tank (10). The telescopic end of the second elastic member (20) is fixedly connected to the adjacent sliding block (16); A second driving member (21) is arranged on the reaction tank (10); a telescopic end of the second driving member (21) is fixedly connected to a fixed platform (22); the fixed platform (22) is rotatably connected to symmetrical swing frames (23); the symmetrical swing frames (23) are used to drive the adjacent connecting rods (17) to move; a third elastic member (24) is fixedly connected between the swing frames (23) and the fixed platform (22).

6. The ammonia rapid absorption device for producing anthranilic acid according to claim 5, characterized in that: A fourth elastic member (30) in contact with the reaction tank (10) is fixedly connected to the lower side of the sliding block (16), and shielding plates (40) sliding along the inside of the reaction tank (10) are fixedly connected to the opposite sides of the sliding blocks (16) in the annular array, and the connecting rod (17) passes through adjacent shielding plates (40) and is rotatably connected thereto.

7. The ammonia rapid absorption device for producing anthranilic acid according to claim 6, characterized in that: Also includes: A second driving assembly is disposed on the support frame (141) and is used to drive the sliding frame (142) to move. The second driving assembly includes: A first liquid holding member (50) fixedly connected to the support frame (141); A first sliding member (51) is slidably connected to the first liquid holding member (50), and the first sliding member (51) is fixedly connected to the sliding frame (142); A protective shell (52) is fixedly connected to the sliding block (16) away from the second driving member (21), and a second liquid containing member (53) is arranged in the protective shell (52); The second sliding member (54) is slidably connected to the protective shell (52). The second sliding member (54) is fixedly connected to the adjacent connecting rod (17). The second sliding member (54) is used to squeeze the second liquid holding member (53). The second liquid holding member (53) is fixedly connected to the first sliding member (51) and is connected to a liquid passage that passes through the protective shell (52) and the adjacent connecting rod (17).

8. The ammonia rapid absorption device for producing anthranilic acid according to claim 7, characterized in that: The first liquid holding member (50) is sealed and slidably connected inside with a sliding plate (510) located below the first sliding member (51); the first sliding member (51) is not sealed with the first liquid holding member (50); a tension spring is fixedly connected between the first sliding member (51) and the sliding plate (510); the first sliding member (51) is fixedly connected with a limiting column in contact with the sliding plate (510) for limiting the relative position of the first sliding member (51) and the sliding plate (510).

9. The ammonia rapid absorption device for producing anthranilic acid according to claim 6, characterized in that: Also includes: A fixed shell (60) is fixedly connected to the reaction tank (10). The fixed shell (60) is fixedly connected to the liquid spraying member (13) close to the porous ring (140). A liquid guide cavity (62) is provided in the fixed shell (60). A truncated cone-shaped through hole communicating with the liquid guide cavity (62) is provided on the upper side of the fixed shell (60). The reaction tank (10) is fixedly connected to and communicated with a second liquid guide tube (63). The second liquid guide tube (63) is used to connect the liquid guide cavity (62) and the first elastic member (15) with the lower part of the reaction tank (10).

10. The ammonia rapid absorption device for producing anthranilic acid according to claim 9, characterized in that: The fixed shell (60) is fixedly connected with a guide pipe (61), and the guide pipe (61) is used to guide the ammonia gas on the lower side upward.

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