Waste sulfuric acid recovery device based on isopropyl bromide recovery

Abstract

The invention discloses a waste sulfuric acid recovery device based on isopropyl bromide recovery, and relates to the technical field of waste sulfuric acid recovery devices.The waste sulfuric acid recovery device comprises a mounting frame, a feeding barrel and a distillation box are arranged on the mounting frame, the feeding barrel is vertically arranged, the distillation box is communicated with the bottom end of the feeding barrel, and a stirring shaft is rotationally connected into the feeding barrel; the driving motor drives the stirring shaft to rotate, and the stirring shaft drives a plurality of rotating plates and a conical rotating plate to rotate, so that the concentration of waste sulfuric acid in a mixed solution is uniform, and the waste sulfuric acid can be conveniently separated in a subsequent process; meanwhile, waste gas in the mixed liquid is discharged through a plurality of gas guide holes in a conical rotating plate, so that the waste gas is prevented from being mixed with gas generated by sulfuric acid distillation, solid impurities in the mixed liquid are filtered through a net-shaped filter cartridge until the mixed liquid reaches the distillation box, and the mixed liquid in the distillation box is heated and evaporated through a heater; sulfuric acid is distilled and flows into the collecting box through the pipeline box, so that the sulfuric acid solution is collected.

Description

Technical Field

[0001] The invention relates to the technical field of waste sulfuric acid recovery devices, in particular to a waste sulfuric acid recovery device based on isopropyl bromide recovery. Background Art

[0002] The waste sulfuric acid recovery unit plays a key role in the treatment of waste sulfuric acid generated during the isopropyl bromide recovery process. First, it is crucial to evaluate the concentration and amount of waste sulfuric acid, which helps determine the most appropriate treatment method. For waste sulfuric acid with higher concentrations, dilution can be considered for use in other industrial processes, such as metal cleaning or pickling. If the amount of waste sulfuric acid is small, neutralization treatment is a viable option, and alkaline substances such as sodium hydroxide or sodium carbonate can be used to react with waste sulfuric acid to produce sulfates and water. The treated materials should be discharged or further treated in accordance with local environmental regulations. Throughout the treatment process, strict compliance with all applicable safety and environmental regulations is necessary to ensure the safety of operators and the protection of the environment.

[0003] During the recovery of isopropyl bromide, the consumption of sulfuric acid during the reaction is inconsistent. Due to the unevenness of factors such as reaction temperature, stirring effect, and raw material addition speed, the concentration of sulfuric acid varies in different parts of the reactor. Waste sulfuric acid may contain solid particulate matter and waste gas impurities. The uneven distribution of these impurities may also lead to uneven concentration. Uneven concentration will increase the difficulty of recovery and processing because more precise control and more complex separation technology are required to ensure the purity and recovery efficiency of sulfuric acid.

[0004] In the existing isopropyl bromide recovery process, the concentration of waste sulfuric acid may be uneven, which increases the difficulty of recovery and treatment; at the same time, waste sulfuric acid may contain solid particles and waste gas impurities, which will affect the purity and recovery efficiency of sulfuric acid. To this end, we provide a waste sulfuric acid recovery device based on isopropyl bromide recovery. Summary of the invention

[0005] The technical problems solved by the present invention are:

[0006] (1) In the existing isopropyl bromide recovery process, the concentration of waste sulfuric acid may be uneven, resulting in increased difficulty in recovery and treatment;

[0007] (2) At the same time, waste sulfuric acid may contain isopropyl bromide or other organic impurities, which will affect the purity and recovery efficiency of sulfuric acid.

[0008] The present invention can be achieved through the following technical scheme: a waste sulfuric acid recovery device based on isopropyl bromide recovery, comprising a mounting frame, a feed barrel and a distillation box are provided on the mounting frame, the feed barrel is vertically arranged, the distillation box is connected to the bottom end of the feed barrel, a stirring shaft is rotatably connected inside the feed barrel, and the stirring shaft is vertically arranged, and the stirring shaft is sequentially provided with a plurality of gas guide components from top to bottom, a gas collecting component is provided on the mounting frame, the gas collecting component is connected to the inside of the feed barrel, a filter is provided in the gas collecting component, a heater is provided at the bottom of the distillation box, a distillation cooling component is provided at the top of the distillation box, and a discharge pipe is fixedly connected to the bottom of the distillation box.

[0009] A further technical improvement of the present invention is that: a plurality of rotating plates are arranged on the stirring shaft, a plurality of rotating plates are provided with material passing grooves, and the material passing grooves are arranged vertically through, and a plurality of air guide components are arranged on the plurality of rotating plates respectively.

[0010] A further technical improvement of the present invention is that each air guide component comprises a conical rotating plate, the conical rotating plate is sleeved outside the rotating plate, and a plurality of air guide holes are formed on the conical rotating plate.

[0011] A further technical improvement of the present invention is that a mesh filter cartridge is detachably mounted below the rotating plate, and the mesh filter cartridge is connected to the material trough.

[0012] A further technical improvement of the present invention is that the gas collecting assembly comprises a gas collecting cylinder, the gas collecting cylinder is mounted on a mounting frame, and the gas collecting cylinder is connected to a feed cylinder through a plurality of connecting pipes.

[0013] A further technical improvement of the present invention is that the filter element comprises two filter mesh layers, the two filter mesh layers are vertically arranged in the gas collecting cylinder in sequence, and the edges of the two filter mesh layers are in contact with the inner wall of the gas collecting cylinder, an air outlet pipe is provided on one side of the gas collecting cylinder, and the air outlet pipe is located on the side close to the filter mesh layer.

[0014] A further technical improvement of the present invention is that a rotating shaft is rotatably connected inside the gas collection cylinder, the rotating shaft is located between the two filter mesh layers, and the rotating shaft is vertically arranged, two opposite reciprocating thread sections are provided on the rotating shaft, and lifting blocks are threadedly installed on the two reciprocating thread sections, both sides of the lifting blocks are rotatably connected with movable rods, and the upper and lower adjacent movable rods are rotatably connected, a collecting sleeve is provided at the bottom of the gas collection cylinder, and the collecting sleeve is located below the two filter mesh layers.

[0015] A further technical improvement of the present invention is that: the rotating shaft and the stirring shaft are both sleeved with transmission sleeves, the two transmission sleeves are both sleeved with transmission belts, and the feeding barrel is provided with a driving motor for driving the stirring shaft to rotate.

[0016] A further technical improvement of the present invention is that the distillation cooling assembly comprises a pipe box, the pipe box is installed above the distillation box, and a collecting box is provided at one end of the pipe box away from the distillation box.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) The device drives the stirring shaft to rotate by a driving motor, and the stirring shaft drives multiple rotating plates and conical rotating plates to rotate, so that the concentration of waste sulfuric acid in the mixed liquid is uniform, which is convenient for subsequent separation; at the same time, the waste gas in the mixed liquid is discharged through the multiple air guide holes on the conical rotating plate, avoiding the mixing of the waste gas and the gas generated by the distillation of sulfuric acid. The mixed liquid reaches the mesh filter cylinder through the material trough on the rotating plate, and the solid impurities in the mixed liquid are filtered by the mesh filter cylinder. The filtered mixed liquid will reach the next conical rotating plate for the next mixing and filtering process until the mixed liquid reaches the distillation box. The mixed liquid in the distillation box is heated and evaporated by the heater, so that the sulfuric acid is distilled into the pipeline box, and flows through the pipeline box to the collection box to collect the sulfuric acid solution, and the waste material can be discharged through the discharge pipe;

[0019] (2) The waste gas in the feed barrel is transmitted to the gas collection barrel through a plurality of connecting pipes. The waste gas in the gas collection barrel will be absorbed by two filter mesh layers and then discharged through the exhaust pipe. The stirring shaft can drive the rotating shaft to rotate through two transmission sleeves and the transmission belts sleeved thereon, so that the rotating shaft drives the two reciprocating threaded sections to rotate, so that the two reciprocating threaded sections and the two lifting blocks are threadedly driven, so that the two lifting blocks are approached or moved away from each other, so that the upper and lower adjacent movable rods are extended and retracted to both sides, thereby continuously tapping the two filter mesh layers, so that the dust and other solid debris on the two filter mesh layers are shaken off into the collection box, and the dust and other solid debris are collected. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the internal structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 3 For the present invention Figure 1 A local enlarged schematic diagram of point A;

[0024] Figure 4 For the present invention Figure 1 A partial enlarged schematic diagram of point B.

[0025] In the figure: 1. mounting frame; 2. feed barrel; 3. distillation box; 4. stirring shaft; 5. rotating plate; 6. material trough; 7. conical rotating plate; 8. air guide hole; 9. mesh filter barrel; 10. gas collecting barrel; 11. connecting pipe fitting; 12. filter mesh layer; 13. outlet pipe; 14. rotating shaft; 15. reciprocating threaded section; 16. lifting block; 17. movable rod; 18. transmission sleeve; 19. transmission belt; 20. driving motor; 21. pipeline box; 22. collecting box; 23. collecting sleeve; 24. heater; 25. discharge pipe. DETAILED DESCRIPTION

[0026] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0027] See also Figure 1-Figure 4 As shown, the present invention proposes a waste sulfuric acid recovery device based on isopropyl bromide recovery, including a mounting frame 1, on which a feed barrel 2 and a distillation box 3 are provided, the feed barrel 2 is vertically arranged, the distillation box 3 is connected to the bottom end of the feed barrel 2, a stirring shaft 4 is rotatably connected inside the feed barrel 2, and the stirring shaft 4 is vertically arranged, and a plurality of gas guide components are sequentially provided on the stirring shaft 4 from top to bottom, a gas collecting component is provided on the mounting frame 1, the gas collecting component is connected to the inside of the feed barrel 2, a filter is provided in the gas collecting component, a heater 24 is provided at the bottom of the distillation box 3, a distillation cooling component is provided at the top of the distillation box 3, and a discharge pipe 25 is fixedly connected to the bottom of the distillation box 3.

[0028] A plurality of rotating plates 5 are arranged on the stirring shaft 4, and a material passing groove 6 is opened on each of the plurality of rotating plates 5, and the material passing groove 6 is vertically penetrated, and a plurality of air guide components are respectively arranged on the plurality of rotating plates 5; the stirring shaft 4 drives the plurality of rotating plates 5 and the conical rotating plate 7 to rotate, so that the concentration of the waste sulfuric acid in the mixed liquid is uniform, so as to facilitate its separation in subsequent processes.

[0029] Each air guide component includes a conical rotating plate 7, which is sleeved on the rotating plate 5 and has multiple air guide holes 8. The diameter of the multiple air guide holes 8 is smaller than the diameter of the solid impurities, and the waste gas in the mixed liquid is discharged through the multiple air guide holes 8 on the conical rotating plate 7.

[0030] A mesh filter cartridge 9 is detachably mounted below the rotating plate 5 and is connected to the feed trough 6. The mixed liquid reaches the mesh filter cartridge 9 through the feed trough 6 on the rotating plate 5, and the solid impurities in the mixed liquid are filtered by the mesh filter cartridge 9. The filtered mixed liquid reaches the next conical rotating plate 7.

[0031] The gas collection assembly includes a gas collection cylinder 10, which is installed on a mounting frame 1. The gas collection cylinder 10 is connected to a feed cylinder 2 through a plurality of connecting pipes 11. The exhaust gas in the feed cylinder 2 is transmitted to the gas collection cylinder 10 through a plurality of connecting pipes 11.

[0032] The filter element includes two filter mesh layers 12, which are vertically arranged in the gas collecting tube 10 in sequence, and the edges of the two filter mesh layers 12 are in contact with the inner wall of the gas collecting tube 10. An outlet pipe 13 is provided on one side of the gas collecting tube 10, and the outlet pipe 13 is located on the side close to the filter mesh layer 12; the exhaust gas in the gas collecting tube 10 is transmitted to the gas collecting tube 10 through a plurality of connecting pipes 11, and the exhaust gas will be absorbed by the two filter mesh layers 12 and then discharged through the outlet pipe 13.

[0033] A rotating shaft 14 is rotatably connected in the gas collecting tube 10, and the rotating shaft 14 is located between the two filter mesh layers 12, and the rotating shaft 14 is vertically arranged. Two opposite reciprocating threaded sections 15 are opened on the rotating shaft 14, and lifting blocks 16 are threadedly installed on the two reciprocating threaded sections 15. Both sides of the lifting blocks 16 are rotatably connected with movable rods 17, and the upper and lower adjacent movable rods 17 are rotatably connected. A collecting sleeve 23 is provided at the bottom of the gas collecting tube 10, and the collecting sleeve 23 is located below the two filter mesh layers 12; the rotating shaft 14 drives the two reciprocating threaded sections 15 to rotate, so that the two reciprocating threaded sections 15 and the two lifting blocks 16 are threadedly driven, causing the two lifting blocks 16 to approach or move away from each other, so that the upper and lower adjacent movable rods 17 are extended and retracted to both sides, thereby continuously tapping the two filter mesh layers 12, so that the dust and other solid debris on the two filter mesh layers 12 are shaken off into the collecting box 22, and the dust and other solid debris are collected.

[0034] A transmission sleeve 18 is sleeved on the rotating shaft 14 and the stirring shaft 4, and a transmission belt 19 is sleeved on the two transmission sleeves 18. A driving motor 20 is provided on the feeding barrel 2 to drive the stirring shaft 4 to rotate; the stirring shaft 4 is driven to rotate by the driving motor 20, and the stirring shaft 4 can drive the rotating shaft 14 to rotate through the two transmission sleeves 18 and the transmission belt 19 sleeved thereon.

[0035] The distillation cooling assembly includes a pipe box 21, which is installed above the distillation box 3. A collecting box 22 is provided at one end of the pipe box 21 away from the distillation box 3; a heater 24 heats and evaporates the mixed liquid in the distillation box 3, so that sulfuric acid is distilled into the pipe box 21 and flows through the pipe box 21 to the collecting box 22 to collect the sulfuric acid solution.

[0036] When the present invention is in use, a mixed solution containing isopropyl bromide, waste sulfuric acid and other organic matter is added to the feed barrel 2, and the stirring shaft 4 is driven to rotate by the driving motor 20, and the stirring shaft 4 drives multiple rotating plates 5 and the conical rotating plate 7 to rotate, so that the concentration of the waste sulfuric acid in the mixed solution is uniform, so as to facilitate the subsequent process of separation; at the same time, the waste gas in the mixed solution is discharged through the multiple air guide holes 8 on the conical rotating plate 7, and the mixed solution reaches the mesh filter cylinder 9 through the material trough 6 on the rotating plate 5, and the solid impurities in the mixed solution are filtered by the mesh filter cylinder 9, and the filtered mixed solution will reach the next conical rotating plate 7, and the next mixing and filtering process will be carried out until the mixed solution reaches the distillation box 3, and the mixed solution in the distillation box 3 is heated and evaporated by the heater 24, so that the sulfuric acid is distilled into the pipeline box 21, and flows into the collection box 22 through the pipeline box 21, so as to collect the sulfuric acid solution, and the waste material can be discharged through the discharge pipe 25;

[0037] The exhaust gas in the feed barrel 2 is transmitted to the gas collecting barrel 10 through a plurality of connecting pipes 11. The exhaust gas in the gas collecting barrel 10 will be absorbed by the two filter mesh layers 12 and then discharged through the exhaust pipe 13. The stirring shaft 4 can drive the rotating shaft 14 to rotate through the two transmission sleeves 18 and the transmission belt 19 sleeved thereon, so that the rotating shaft 14 drives the two reciprocating threaded sections 15 to rotate, so that the two reciprocating threaded sections 15 and the two lifting blocks 16 are threadedly driven, so that the two lifting blocks 16 are close to or away from each other, so that the upper and lower adjacent movable rods 17 are extended and retracted to both sides, thereby continuously tapping the two filter mesh layers 12, so that the dust and other solid debris on the two filter mesh layers 12 are shaken off into the collection box 22, and the dust and other solid debris are collected.

[0038] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A waste sulfuric acid recovery device based on isopropyl bromide recovery, characterized in that, The invention comprises a mounting frame (1), wherein a feed barrel (2) and a distillation box (3) are provided on the mounting frame (1), wherein the feed barrel (2) is arranged vertically, and the distillation box (3) is connected to the bottom end of the feed barrel (2), and a stirring shaft (4) is rotatably connected inside the feed barrel (2), and the stirring shaft (4) is arranged vertically, and the stirring shaft (4) is provided with a plurality of gas guide components in sequence from top to bottom, and a gas collection component is provided on the mounting frame (1), and the gas collection component is connected to the inside of the feed barrel (2), and a filter is provided inside the gas collection component, a heater (24) is provided at the bottom of the distillation box (3), a distillation cooling component is provided at the top of the distillation box (3), and a discharge pipe (25) is fixedly connected to the bottom of the distillation box (3).

2. A waste sulfuric acid recovery device based on isopropyl bromide recovery according to claim 1, characterized in that, The stirring shaft (4) is provided with a plurality of rotating plates (5), each of which is provided with a material passing groove (6), and the material passing groove (6) is vertically penetrated, and a plurality of air guide components are respectively arranged on the plurality of rotating plates (5).

3. A waste sulfuric acid recovery device based on isopropyl bromide recovery according to claim 2, characterized in that, Each air guide component comprises a conical rotating plate (7), wherein the conical rotating plate (7) is sleeved outside the rotating plate (5), and a plurality of air guide holes (8) are formed on the conical rotating plate (7).

4. A waste sulfuric acid recovery device based on isopropyl bromide recovery according to claim 2, characterized in that, A mesh filter cartridge (9) is detachably mounted below the rotating plate (5), and the mesh filter cartridge (9) is connected to the material trough (6).

5. A waste sulfuric acid recovery device based on isopropyl bromide recovery according to claim 1, characterized in that, The gas collection assembly comprises a gas collection cylinder (10), the gas collection cylinder (10) is mounted on a mounting frame (1), and the gas collection cylinder (10) is connected to a feed cylinder (2) via a plurality of connecting pipes (11).

6. A waste sulfuric acid recovery device based on isopropyl bromide recovery according to claim 5, characterized in that: The filter element comprises two filter mesh layers (12), the two filter mesh layers (12) are arranged vertically in sequence in the gas collection tube (10), and the edges of the two filter mesh layers (12) are in contact with the inner wall of the gas collection tube (10), and an air outlet pipe (13) is provided on one side of the gas collection tube (10), and the air outlet pipe (13) is located on a side close to the filter mesh layer (12).

7. A waste sulfuric acid recovery device based on isopropyl bromide recovery according to claim 6, characterized in that: A rotating shaft (14) is rotatably connected inside the gas collection cylinder (10), the rotating shaft (14) is located between the two filter mesh layers (12), and the rotating shaft (14) is vertically arranged. Two opposite reciprocating threaded sections (15) are provided on the rotating shaft (14), and lifting blocks (16) are threadedly mounted on the two reciprocating threaded sections (15). Both sides of the lifting blocks (16) are rotatably connected to movable rods (17), and the upper and lower adjacent movable rods (17) are rotatably connected. A collecting sleeve (23) is provided at the bottom of the gas collection cylinder (10), and the collecting sleeve (23) is located below the two filter mesh layers (12).

8. A waste sulfuric acid recovery device based on isopropyl bromide recovery according to claim 7, characterized in that: The rotating shaft (14) and the stirring shaft (4) are both sleeved with a transmission sleeve (18), and the two transmission sleeves (18) are both sleeved with a transmission belt (19). The feeding barrel (2) is provided with a driving motor (20) for driving the stirring shaft (4) to rotate.

9. A waste sulfuric acid recovery device based on isopropyl bromide recovery according to claim 1, characterized in that, The distillation cooling assembly comprises a pipeline box (21), wherein the pipeline box (21) is installed above the distillation box (3), and a collecting box (22) is provided at one end of the pipeline box (21) away from the distillation box (3).

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