Dimethyl sulfate tail gas treatment device

Abstract

The utility model discloses a dimethyl sulfate tail gas treatment device, which belongs to the technical field of chemical production equipment, and comprises a bottom plate, a mounting cylinder, a water storage cylinder and a fixing cylinder, the inner top surface of the mounting cylinder is fixedly connected with a partition plate, the top surface of the partition plate is provided with a circular groove, and the circular groove is internally provided with a turntable; a motor is fixedly connected to the lower end of the interior of the mounting cylinder, a rotating shaft of the motor rotationally extends into the circular groove, a rotating pipe is fixedly connected to the tail end of the rotating shaft of the motor, a sleeve rotationally sleeves the side wall of the rotating pipe, and an air inlet pipe is fixedly connected to the outer side of the mounting cylinder; the air inlet pipe extends into the mounting cylinder and communicates with the sleeve, the top face of the rotating pipe communicates with a rotating disc, a cavity is formed in the rotating disc, and a plurality of air outlet holes are formed in the top face of the rotating disc. Compared with the prior art, the device can effectively and fully structure dimethyl sulfate tail gas and sodium hydroxide liquid, so that the desulfurization effect of the dimethyl sulfate tail gas is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical production equipment, in particular to a tail gas treatment device for dimethyl sulfate. Background Technique

[0002] Dimethyl sulfate is an important organic chemical raw material and is mainly used as a methylating agent in organic synthesis. The current domestic production process is mainly the synthesis method of sulfur burning to produce sulfur trioxide and dimethyl ether. In production, due to the incomplete conversion of sulfur dioxide, the incomplete absorption of sulfur trioxide, and the volatilization of the absorption of coking esters, dimethyl sulfate, sulfur trioxide, and sulfur dioxide contained in the tail gas will cause environmental pollution.

[0003] Most of the existing dimethyl sulfate tail gas treatment devices absorb the tail gas by spraying sodium hydroxide. However, in this spraying method, the contact between sodium hydroxide and the dimethyl sulfate tail gas is insufficient, resulting in some tail gas carrying harmful gases being discharged into the atmosphere together, thus causing air pollution.

[0004] For example, the existing Chinese Patent Publication No.: CN215585932U, a dimethyl sulfate tail gas treatment device, includes an absorption tank, a stirring tank, a desulfurization tower, inclined plates, and a scraper. The interior of the absorption tank is respectively provided with a reaction tank, a sedimentation tank, and a clear water tank, and the reaction tank, the sedimentation tank, and the clear water tank are in a side-by-side position. The stirring tank is arranged at the upper end of the reaction tank.

[0005] It can be seen that the above-cited patent documents also have the same problem. Although the above device can achieve the integration of desulfurization and dust removal, and the desulfurization efficiency of this treatment method is high and can meet the production requirements through detection, in actual use, the desulfurization method is a spraying method, so that sodium hydroxide contacts and absorbs the tail gas. However, in this absorption treatment method, some tail gas cannot be fully contacted with sodium hydroxide and is discharged, so it will cause certain pollution to the air. Therefore, there is an urgent need for a dimethyl sulfate tail gas treatment device to solve this problem. Summary of the Invention

[0006] The purpose of the utility model is to provide a dimethyl sulfate tail gas treatment device to solve the problems put forward in the background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A dimethyl sulfate tail gas treatment device includes a bottom plate for installing the dimethyl sulfate tail gas treatment device. The top surface of the bottom plate is fixedly connected with an installation cylinder. The top surface of the installation cylinder is fixedly connected with a water storage cylinder. The top surface of the water storage cylinder is fixedly connected with a fixed cylinder. The top surface of the bottom plate is fixedly connected with a water pump. The water inlet and the water outlet of the water pump are respectively fixedly connected with a water inlet pipe and a water delivery pipe, and the end of the water delivery pipe extends into the interior of the water storage cylinder;

[0008] A partition is fixedly connected to the inner top surface of the installation cylinder. A circular groove is formed in the top surface of the partition. A turntable is rotatably connected to the inside of the circular groove. A motor is fixedly connected to the lower end inside the installation cylinder, and the rotating shaft of the motor extends rotatably into the circular groove. The end of the rotating shaft of the motor is fixedly connected to a rotating pipe. A sleeve is rotatably sleeved on the side wall of the rotating pipe. A plurality of air inlet holes are formed in the side wall of the rotating pipe, and the air inlet holes are located at the sleeve sleeving position. An air inlet pipe is fixedly connected to the outside of the installation cylinder. The air inlet pipe extends into the installation cylinder and communicates with the sleeve. The top surface of the rotating pipe communicates with the turntable. A cavity is formed in the inside of the turntable. A plurality of air outlet holes are formed in the top surface of the turntable.

[0009] Preferably, check valves are respectively fixedly connected to the inside of the plurality of air outlet holes formed in the top surface of the turntable.

[0010] Preferably, a rotating rod is fixedly connected to the top surface of the turntable, and a plurality of stirring blades are fixedly connected to the side wall of the rotating rod.

[0011] Preferably, an annular groove is formed in the bottom of the circular groove formed in the top surface of the partition, and arc-shaped blocks are symmetrically and fixedly connected to the lower end of the turntable.

[0012] Preferably, the two arc-shaped blocks fixedly connected to the lower end of the turntable are respectively slidably connected to the inside of the annular groove formed in the bottom of the circular groove.

[0013] Preferably, a sealing ring is fixedly sleeved on the side wall of the turntable, and the outer wall of the sealing ring is slidably and sealingly attached to the inner wall of the circular groove.

[0014] Preferably, a rectangular groove is formed in the side wall of the water storage cylinder, and a transparent acrylic plate is fixedly connected to the inside of the rectangular groove.

[0015] Compared with the prior art, the technical effects and advantages of the present utility model:

[0016] For this dimethyl sulfate tail gas treatment device, when it is necessary to treat dimethyl sulfate tail gas, first, a water pump is used to pump sodium hydroxide liquid into the interior of the water delivery pipe and introduce it into the interior of the water storage cylinder. Subsequently, the dimethyl sulfate tail gas is introduced into the interior of the intake pipe. Then, the tail gas is introduced into the interior of the sleeve through the intake pipe. At this time, thanks to the intake holes opened on the side wall of the rotating pipe, the tail gas in the sleeve is then introduced into the interior of the rotating pipe through the intake holes. Subsequently, it is introduced into the interior of the rotating disc through the rotating pipe, and then discharged into the sodium hydroxide liquid inside the water storage cylinder through the air outlet holes opened on the top surface of the rotating disc. Then, the motor is started, and the rotating pipe and the rotating disc fixedly connected to the end of its rotating shaft are driven by the motor to rotate. In this way, while the rotating disc rotates effectively, the tail gas is evenly introduced into the sodium hydroxide liquid, so that the tail gas and the sodium hydroxide liquid are fully contacted and absorbed. Subsequently, the desulfurized gas will be discharged through the air outlet holes on the fixed cylinder. Compared with the prior art, this device can effectively make the dimethyl sulfate tail gas and the sodium hydroxide liquid fully contact, thereby improving the desulfurization effect of the dimethyl sulfate tail gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of the present invention;

[0019] Figure 2 It is a schematic structural diagram of the circular groove, the rotating disc, the motor, etc. in the present invention;

[0020] Figure 3 For the present invention Figure 2 The enlarged schematic diagram of the structure of part A in it;

[0021] Figure 4 It is a planar cross-sectional view of the sleeve and the rotating pipe in the present invention.

[0022] Description of the reference numerals in the drawings:

[0023] In the figure: 1, bottom plate; 2, mounting cylinder; 3, intake pipe; 4, water storage cylinder; 5, fixed cylinder; 6, water pump; 7, water delivery pipe; 8, partition board; 9, circular groove; 10, rotating disc; 11, motor; 12, rotating pipe; 13, sleeve; 14, water inlet pipe; 15, air outlet hole; 16, check valve; 17, rotating rod; 18, stirring blade; 19, arc-shaped block; 20, transparent acrylic plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In the following description, numerous specific details are given to provide a more thorough understanding of the present utility model. However, it will be apparent to those skilled in the art that the present utility model may be practiced without one or more of these details. In other instances, some well-known technical features are not described to avoid obscuring the present utility model.

[0025] Unless otherwise indicated by a separately defined direction, the directions such as up, down, left, right, front, back, inside, and outside referred to herein are based on the up, down, left, right, front, back, inside, and outside directions in the figures shown in the present utility model, and are hereby explained together.

[0026] The connection method can adopt existing methods such as bonding, welding, bolt connection, etc., depending on actual needs.

[0027] As Figures 1 to 4 shown, the main structure of a dimethyl sulfate tail gas treatment device is a bottom plate 1. The top surface of the bottom plate 1 is fixedly connected with an installation cylinder 2. The top surface of the installation cylinder 2 is fixedly connected with a water storage cylinder 4. The top surface of the water storage cylinder 4 is fixedly connected with a fixed cylinder 5. A rectangular groove is formed in the side wall of the water storage cylinder 4. A transparent acrylic plate 20 is fixedly connected inside the rectangular groove. Thanks to the setting of the transparent acrylic plate 20, the situation inside the water storage cylinder 4 can be observed more intuitively. An air outlet pipe is fixedly connected to the side wall of the fixed cylinder 5. The top surface of the bottom plate 1 is fixedly connected with a water pump 6. The water inlet and outlet of the water pump 6 are respectively fixedly connected with a water inlet pipe 14 and a water delivery pipe 7. The end of the water delivery pipe 7 extends into the interior of the water storage cylinder 4. Thus, the water pump 6 can introduce sodium hydroxide liquid into the interior of the water storage cylinder 4, and the water storage cylinder 4 and the installation cylinder 2 are hermetically arranged;

[0028] A partition plate 8 is fixedly connected to the inner top surface of the installation cylinder 2. The outer wall of the partition plate 8 is hermetically arranged with the inner wall of the installation cylinder 2. Thus, it can effectively prevent the liquid inside the water storage cylinder 4 from flowing into the interior of the installation cylinder 2, thereby protecting the mechanical components inside the installation cylinder 2. A circular groove 9 is formed on the top surface of the partition plate 8. A turntable 10 is rotatably connected to the interior of the circular groove 9. An annular groove is formed at the bottom of the circular groove 9 opened on the top surface of the partition plate 8. Two arc-shaped blocks 19 are symmetrically and fixedly connected to the lower end of the turntable 10. The two arc-shaped blocks 19 fixedly connected to the lower end of the turntable 10 are respectively slidably connected to the interior of the annular groove opened at the bottom of the circular groove 9. Thanks to the fact that the two arc-shaped blocks 19 symmetrically and fixedly connected to the lower end of the turntable 10 are respectively slidably connected to the interior of the annular groove opened at the lower end of the circular groove 9, the rotation of the turntable 10 can be effectively limited, and at the same time, the rotation stability of the turntable 10 can be effectively improved. A sealing ring is fixedly sleeved on the side wall of the turntable 10. The outer wall of the sealing ring is slidably and hermetically attached to the inner wall of the circular groove 9. Thanks to the sealing ring fixedly sleeved on the outer wall of the turntable 10, it can effectively form a seal between the turntable 10 and the circular groove 9, thereby effectively preventing the liquid inside the water storage cylinder 4 from flowing into the interior of the circular groove 9, and at the same time, it will not affect the rotation of the turntable 10. A motor 11 is fixedly connected to the lower end inside the installation cylinder 2, and the rotating shaft of the motor 11 extends rotatably into the interior of the circular groove 9. The end of the rotating shaft of the motor 11 is fixedly connected to a rotating pipe 12. A sleeve 13 is rotatably sleeved on the side wall of the rotating pipe 12. A plurality of air inlet holes are formed on the side wall of the rotating pipe 12, and the air inlet holes are located at the sleeved part of the sleeve 13. The exhaust pipe 3 leads the tail gas into the interior of the sleeve 13 fixedly connected to the end of the exhaust pipe 3. At this time, thanks to the plurality of air inlet holes formed on the side wall of the rotating pipe 12, the tail gas inside the sleeve 13 is then led into the interior of the rotating pipe 12 through the plurality of air inlet holes formed on the side wall of the rotating pipe 12. And a bearing and a gasket are rotatably connected between the outer wall of the rotating pipe 12 and the inner wall of the sleeve 13. Thus, the tail gas can be effectively led into the interior of the rotating pipe 12 without affecting its normal rotation. And the outer wall of the rotating pipe 12 and the inner wall of the sleeve 13 are hermetically arranged. An exhaust pipe 3 is fixedly connected to the outside of the installation cylinder 2. The exhaust pipe 3 extends into the interior of the installation cylinder 2 and is communicated with the sleeve 13. The top surface of the rotating pipe 12 is communicated with the turntable 10. A cavity is formed inside the turntable 10. A plurality of air outlet holes 15 are formed on the top surface of the turntable 10. A rotating rod 17 is fixedly connected to the top surface of the turntable 10. A plurality of stirring blades 18 are fixedly connected to the side wall of the rotating rod 17. Thanks to the arrangement of the stirring blades 18, when the turntable 10 rotates, the rotating rod 17 and the stirring blades 18 are synchronously driven to rotate, thereby effectively re-dispersing and stirring the tail gas evenly sprayed into the water storage cylinder 4 by the turntable 10, so as to further make the tail gas contact the sodium hydroxide liquid more fully, thereby effectively improving the treatment effect of the dimethyl sulfate tail gas. Check valves 16 are respectively fixedly connected to the interiors of the plurality of air outlet holes 15 formed on the top surface of the turntable 10. Thanks to the arrangement of the check valves 16 inside the plurality of air outlet holes 15,This can effectively prevent sulfides and dust in the sodium hydroxide liquid from entering the cavity inside the turntable 10 through the air outlet 15.,

[0029] Working principle

[0030] When the dimethyl sulfate tail gas treatment device is in use, first, start the water pump 6 to pump the sodium hydroxide liquid into the inside of the water delivery pipe 7 and introduce it into the inside of the water storage cylinder 4. Subsequently, introduce the dimethyl sulfate tail gas into the inside of the air inlet pipe 3. Then, pass the tail gas through the air inlet pipe 3 into the inside of the installation cylinder 2. Then, pass the tail gas through the air inlet pipe 3 into the inside of the sleeve 13 fixedly connected to the end of the air inlet pipe 3. At this time, due to a plurality of air inlet holes being provided on the side wall of the rotating pipe 12, then pass the tail gas in the sleeve 13 into the inside of the rotating pipe 12 through the plurality of air inlet holes provided on the side wall of the rotating pipe 12. And there are bearings and gaskets rotatably connected between the outer wall of the rotating pipe 12 and the inner wall of the sleeve 13. Then, pass it into the inside of the turntable 10 through the rotating pipe 12. Then, discharge it into the sodium hydroxide liquid inside the water storage cylinder 4 through the air outlet 15 provided on the top surface of the turntable 10. Then, start the motor 11, and drive the rotating pipe 12 and the turntable 10 fixedly connected to the end of its rotating shaft through the motor 11 to rotate. In this way, effectively, while the turntable 10 rotates, the tail gas is evenly introduced into the sodium hydroxide liquid, so that the tail gas and the sodium hydroxide liquid are fully contacted and absorbed. Then, the desulfurized gas will be discharged through the air outlet pipe on the fixed cylinder 5.,

[0031] It should be noted that in this article, relational terms such as "one" and "two" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation. An element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.,

[0032] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.,

Claims

1. A dimethyl sulfate tail gas treatment device, comprising a bottom plate (1) for installing the dimethyl sulfate tail gas treatment device, characterized in that: The top surface of the bottom plate (1) is fixedly connected with an installation cylinder (2). The top surface of the installation cylinder (2) is fixedly connected with a water storage cylinder (4). The top surface of the water storage cylinder (4) is fixedly connected with a fixed cylinder (5). The top surface of the bottom plate (1) is fixedly connected with a water pump (6). The water inlet and the water outlet of the water pump (6) are respectively fixedly connected with a water inlet pipe (14) and a water delivery pipe (7), and the end of the water delivery pipe (7) extends into the interior of the water storage cylinder (4). The inner top surface of the installation cylinder (2) is fixedly connected with a partition plate (8). A circular groove (9) is formed on the top surface of the partition plate (8). A turntable (10) is rotatably connected to the interior of the circular groove (9). A motor (11) is fixedly connected to the lower end inside the installation cylinder (2), and the rotating shaft of the motor (11) rotatably extends into the circular groove (9). The end of the rotating shaft of the motor (11) is fixedly connected with a rotating pipe (12). A sleeve (13) is rotatably sleeved on the side wall of the rotating pipe (12). A plurality of air inlet holes are formed on the side wall of the rotating pipe (12), and the air inlet holes are located at the sleeved position of the sleeve (13). An air inlet pipe (3) is fixedly connected to the outside of the installation cylinder (2). The air inlet pipe (3) extends into the interior of the installation cylinder (2) and is communicated with the sleeve (13). The top surface of the rotating pipe (12) is communicated with the turntable (10). A cavity is formed inside the turntable (10). A plurality of air outlet holes (15) are formed on the top surface of the turntable (10).

2. The sulfuric acid dimethyl ester tail gas treatment device according to claim 1, wherein: One-way valves (16) are respectively fixedly connected to the interiors of the plurality of air outlet holes (15) formed on the top surface of the turntable (10).

3. The sulfuric acid dimethyl ester tail gas treatment device according to claim 1, characterized in that: A rotating rod (17) is fixedly connected to the top surface of the turntable (10). A plurality of stirring blades (18) are fixedly connected to the side wall of the rotating rod (17).

4. The sulfuric acid dimethyl ester tail gas treatment device according to claim 1, wherein: An annular groove is formed at the bottom of the circular groove (9) formed on the top surface of the partition plate (8). Arc-shaped blocks (19) are symmetrically and fixedly connected to the lower end of the turntable (10).

5. The sulfuric acid dimethyl ester tail gas treatment device according to claim 4, characterized in that: The two arc-shaped blocks (19) fixedly connected to the lower end of the turntable (10) are respectively slidably connected to the interior of the annular groove formed at the bottom of the circular groove (9).

6. The sulfuric acid dimethyl ester tail gas treatment device according to claim 1, wherein: A sealing ring is fixedly sleeved on the side wall of the turntable (10). The outer wall of the sealing ring is slidably and sealingly attached to the inner wall of the circular groove (9).

7. The sulfuric acid dimethyl ester tail gas treatment device according to claim 1, characterized in that: A rectangular groove is formed on the side wall of the water storage cylinder (4). A transparent acrylic plate (20) is fixedly connected to the interior of the rectangular groove.

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