A rotating disk reaction device for absorbing ship exhaust gas

Abstract

The present invention discloses a ship exhaust gas absorption rotating disk reaction device, comprising: a shell, a hollow rotating shaft arranged in the shell, a power device for driving the hollow rotating shaft to rotate, a rotating disk sleeved on the hollow rotating shaft, and a spray hole group provided on the hollow rotating shaft, wherein the spray hole group comprises a plurality of spray holes, and the opening direction of the spray holes is aligned with the rotating disk; a baffle assembly is also sleeved on the hollow rotating shaft, and the baffle assembly comprises a first baffle and a second baffle, the first baffle and the second baffle are located on both sides of the rotating disk, a first refraction channel is formed between the first baffle and the rotating disk, and a second refraction channel is formed between the second baffle and the rotating disk. The present invention arranges the first baffle and the second baffle on both sides of the rotating disk, and the first baffle and the second baffle block the absorption liquid sprayed from the spray hole to prevent the absorption liquid from splashing, so that most of the sprayed absorption liquid is spread on the surface of the rotating disk, thereby improving the mass transfer absorption effect of the absorption liquid and the reaction efficiency of the reaction device.

Description

Technical Field

[0001] The invention relates to the technical field of supergravity reaction devices, and in particular to a ship exhaust gas absorption rotating disk reaction device. Background Art

[0002] Ultra-gravity rotating bed is widely used in exhaust gas treatment due to its high mass transfer efficiency, small equipment size, short residence time, strong anti-blocking ability, simple operation and convenient maintenance. Its compact structure is especially suitable for ship exhaust gas treatment.

[0003] The Chinese patent application with the publication number of CN111335986A discloses an atomization device based on a rotating multi-disc, including a housing, a rotating shaft and a power device, wherein the power device is connected to the rotating shaft, the rotating shaft is a hollow rotating shaft, and is arranged inside the housing, and a turntable device is sleeved on the rotating shaft, the turntable device is arranged in a straight surface or a curved surface, and a plurality of spray holes are opened on the rotating shaft, and the opening direction of the spray holes is aligned with the turntable device. The spray holes are inclined with the central axis of the rotating shaft as the reference, and the inclination angle is 30-60°. The number of spray holes is a plurality, and they are arranged above the turntable device. However, since the absorption liquid rotates at high speed with the rotating shaft after passing into the rotating shaft, the absorption liquid is ejected from the spray hole at high speed under the action of centrifugal force and hits the turntable device in the inclined direction, so it is easy to cause the absorption liquid to splash, so that only a small part of the absorption liquid is spread on the turntable surface, which weakens the mass transfer absorption effect of the absorption liquid. Summary of the invention

[0004] The present invention provides a ship exhaust gas absorption rotating disk reaction device to solve the technical problem that the existing device easily causes absorption liquid splashing, so that only a small part of the absorption liquid is spread on the surface of the rotating disk, thereby weakening the mass transfer absorption effect of the absorption liquid.

[0005] In order to achieve the above object, the technical solution of the present invention is:

[0006] A ship exhaust gas absorption rotating disk reaction device comprises: a shell, a hollow rotating shaft arranged in the shell, a power device for driving the hollow rotating shaft to rotate, a rotating disk sleeved on the hollow rotating shaft, and a spray hole group opened on the hollow rotating shaft, wherein the spray hole group comprises a plurality of spray holes, and the opening directions of the spray holes are aligned with the rotating disk; a baffle assembly is also sleeved on the hollow rotating shaft, and the baffle assembly comprises a first baffle and a second baffle, the first baffle and the second baffle are located on both sides of the rotating disk, a first refraction channel is formed between the first baffle and the rotating disk, and a second refraction channel is formed between the second baffle and the rotating disk.

[0007] Preferably, the first baffle is a conical tube, and the large diameter end of the first baffle faces the turntable; the second baffle is a conical tube, and the large diameter end of the second baffle faces the turntable.

[0008] Preferably, the end surface of the first baffle plate facing the turntable is parallel to the turntable surface; the end surface of the second baffle plate facing the turntable is parallel to the turntable surface.

[0009] Preferably, the rotating disk divides the spray hole into two.

[0010] Preferably, a plurality of rotating disks, baffle assemblies corresponding to the plurality of rotating disks one by one, and spray hole groups corresponding to the plurality of rotating disks one by one are arranged along the axial direction of the hollow rotating shaft, and the spacing between adjacent rotating disks is 10 mm-50 mm.

[0011] Preferably, mesh grooves are provided on both side surfaces of the turntable, and the mesh grooves include a plurality of radial grooves evenly distributed along the circumference of the turntable and a plurality of concentric annular grooves arranged along the radial direction of the turntable.

[0012] Preferably, the radial grooves on the two side surfaces of the turntable correspond to each other, and the annular grooves are staggered along the radial direction of the turntable.

[0013] Preferably, a plurality of liquid separation gaps are provided on the edge of the rotating disk, and the liquid separation gaps are located between two adjacent radial grooves.

[0014] Preferably, one end of the hollow rotating shaft is connected to the power device, and the other end is connected to the liquid inlet pipe, and a liquid discharge pipe is also provided below the shell; an air inlet pipe and an air exhaust pipe are also provided on the shell.

[0015] Preferably, the axes of the air intake pipe and the exhaust pipe are arranged vertically, and the axes of the air intake pipe and the exhaust pipe are perpendicular to the axis of the hollow rotating shaft.

[0016] Beneficial effects:

[0017] The present application discloses a ship exhaust gas absorption rotating disk reaction device, by arranging a first baffle and a second baffle on both sides of the rotating disk. The first baffle and the second baffle block the absorption liquid sprayed from the spray hole to prevent the absorption liquid from splashing, so that most of the sprayed absorption liquid is spread to the surface of the rotating disk, thereby improving the mass transfer absorption effect of the absorption liquid and the reaction efficiency of the reaction device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 This is a schematic structural cross-sectional view of a rotating disk reaction device for absorbing ship exhaust gas disclosed in Example 1 of the present invention;

[0020] Figure 2A structural cutaway top view of a rotating disk reaction device for absorbing exhaust gas from a ship disclosed in Example 1 of the present invention;

[0021] Figure 3 A cross-sectional view of an assembly of a hollow rotating shaft, a rotating disk and a baffle assembly of a ship exhaust gas absorption rotating disk reaction device disclosed in Example 1 of the present invention;

[0022] Figure 4 This is a schematic structural diagram of a rotating disk of a ship exhaust gas absorption rotating disk reaction device disclosed in Example 1 of the present invention;

[0023] Figure 5 This is a system block diagram of an exhaust gas treatment system using a ship exhaust gas absorption rotating disk reaction device disclosed in Example 2 of the present invention.

[0024] 1. Shell; 2. Hollow shaft; 21. First locking nut; 22. First sleeve; 23. Second sleeve; 24. Third sleeve; 25. Second locking nut;

[0025] 3. Power device; 4. Rotating disk; 41. Net-shaped groove; 411. Radial groove; 412. Annular groove; 42. Liquid separation notch;

[0026] 5. spray hole; 61. first baffle; 62. second baffle; 71. liquid inlet pipe; 72. liquid discharge pipe; 81. air inlet pipe; 82. air discharge pipe; 91. first bracket; 92. second bracket; 93. base;

[0027] 10. Ship exhaust gas storage tank; 20. Pressure reducing valve; 30. Flow meter; 40. Dryer; 50. Online flue gas analyzer; 60. Exhaust gas absorption tank; 70. Absorption liquid storage tank; 80. Peristaltic pump. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example 1

[0030] A ship exhaust gas absorption rotating disk reaction device, combined with Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, it comprises: a shell 1, a hollow rotating shaft 2 arranged in the shell 1, a power device 3 for driving the hollow rotating shaft 2 to rotate, a rotating disk 4 sleeved on the hollow rotating shaft 2, and a spray hole group provided on the hollow rotating shaft 2, wherein the spray hole group comprises a plurality of spray holes 5, and the opening direction of the spray holes 5 is aligned with the rotating disk 4; a baffle assembly is also sleeved on the hollow rotating shaft 2, and the baffle assembly comprises a first baffle 61 and a second baffle 62, and the first baffle 61 and the second baffle 62 are located on both sides of the rotating disk 4, and a first refraction channel is formed between the first baffle 61 and the rotating disk 4, and a second refraction channel is formed between the second baffle 62 and the rotating disk 4. After the high-viscosity alkaline mixed absorption liquid is sprayed out through the spray hole 5, it splashes outward under the action of centrifugal force, and the high-viscosity alkaline mixed absorption liquid on both sides of the rotating disk 4 is blocked by the first baffle 61 and the second baffle 62 respectively, thereby preventing a large part of the high-viscosity alkaline mixed absorption liquid from directly flying to the inner wall of the shell 1 without contacting the rotating disk 4. Take the high-viscosity alkaline mixed absorption liquid between the first baffle 61 and the turntable 4 as an example for explanation: after the high-viscosity alkaline mixed absorption liquid is sprayed out, it is continuously refracted in the first refraction channel between the first baffle 61 and the turntable 4 and then transmitted out of the first refraction channel, and the high-viscosity alkaline mixed absorption liquid is continuously in contact with the turntable 4, so that the amount of the splashed high-viscosity alkaline mixed absorption liquid is gradually reduced, so that most of the sprayed high-viscosity alkaline mixed absorption liquid is attached to the turntable 4; and due to the continuous refraction, the speed of the splashed high-viscosity alkaline mixed absorption liquid will gradually decrease, which is also conducive to the high-viscosity alkaline mixed absorption liquid attaching to the turntable 4. Further, the high-viscosity alkaline mixed absorption liquid is mass-transferred with the high-speed rotation of the turntable 4, and the high-viscosity alkaline mixed absorption liquid covers the surface of the turntable 4, thereby improving the mass transfer and absorption effect of the high-viscosity alkaline mixed absorption liquid and improving the mass transfer efficiency of the turntable 4 surface area, thereby improving the reaction efficiency of the reaction device.

[0031] Specifically, the reaction device can be set to a vertical or horizontal type as needed. In this embodiment, a horizontal structure is used for explanation. The shell 1 is cylindrical and made of plexiglass, which is convenient for observing and recording the distribution characteristics of the high-viscosity alkaline mixed absorption liquid on the surface of the turntable 4 and the diffusion width on the inner wall of the shell 1 during operation; its two ends are respectively fixed on the first bracket 91 and the second bracket 92, and the first bracket 91 and the second bracket 92 are made of stainless steel. The two ends of the shell 1 are respectively sealed with the first bracket 91 and the second bracket 92 through a sealing structure, and the first bracket 91 and the second bracket 92 are vertically installed on the base 93. The sealing structure is a prior art and will not be repeated here.

[0032] Preferably, one end of the hollow shaft 2 is connected to the power device 3, and the other end is connected to the liquid inlet pipe 71, and a liquid discharge pipe 72 is also provided below the shell 1; an air inlet pipe 81 and an exhaust pipe 82 are also provided on the shell 1. The high-viscosity alkaline mixed absorption liquid is introduced into the hollow shaft 2 through the liquid inlet pipe 71, and the high-viscosity alkaline mixed absorption liquid in the cavity of the shell 1 is discharged through the exhaust pipe 72. The ship exhaust gas enters the shell 1 through the air inlet pipe 81 and fully contacts with the high-viscosity alkaline mixed absorption liquid, and the treated gas is discharged through the exhaust pipe 82. The air inlet pipe 81 is connected to the flowmeter 30, and the liquid inlet pipe 71 is connected to the peristaltic pump 80. In this embodiment, the diameters of the air inlet pipe 81, the exhaust pipe 82 and the liquid discharge pipe 72 are all 6 mm, and the diameter of the liquid inlet pipe 71 is 6 mm.

[0033] Preferably, the axes of the air inlet pipe 81 and the exhaust pipe 82 are arranged vertically, and the axes of the air inlet pipe 81 and the exhaust pipe 82 are perpendicular to the axis of the hollow rotating shaft 2, so that the ship's exhaust gas enters in a direction parallel to the turntable 4 and is fully contacted with the high-viscosity alkaline mixed absorption liquid attached to the turntable 4.

[0034] Specifically, one end of the hollow shaft 2 is open and the other end is closed. The open end of the hollow shaft 2 passes through the first bracket 91 and is connected to the liquid inlet pipe 71, and the closed end passes through the second bracket 92 and is connected to the power device 3. Bearings are installed between the two ends of the hollow shaft 2 and the first bracket 91 and the second bracket 92, respectively, and are sealed by a sealing structure. The sealing structure is a prior art and will not be described in detail here.

[0035] Specifically, the power device 3 can use a high-speed motor, which is mounted on the second bracket 92, and the output end of the high-speed motor is connected to the hollow shaft 2 through a coupling. The high-speed motor is matched with a tachometer and connected to a controller, and the controller controls the high-speed motor.

[0036] Preferably, the first baffle 61 is a conical tube, and the large diameter end of the first baffle 61 faces the turntable 4; the second baffle 62 is a conical tube, and the large diameter end of the second baffle 62 faces the turntable 4. The first baffle 61 and the second baffle 62 are arranged at a certain angle to help change the refraction angle of the sprayed high-viscosity alkaline mixed absorption liquid, so that it is refracted multiple times. In this embodiment, the cone angles of the first baffle 61 and the second baffle 62 are both 120°.

[0037] Preferably, the end surface of the first baffle 61 facing the turntable 4 is parallel to the disk surface of the turntable 4; the end surface of the second baffle 62 facing the turntable 4 is parallel to the disk surface of the turntable 4. Taking the first baffle 61 as an example, after the high-viscosity alkaline mixed absorption liquid is refracted to the end surface of the first baffle 61 facing the turntable 4, the high-viscosity alkaline mixed absorption liquid is refracted in the gap between the end surface of the first baffle 61 facing the turntable 4 and the disk surface of the turntable 4, and the high-viscosity alkaline mixed absorption liquid is wavy and leaves the area covered by the first baffle 61 along the radial direction of the turntable 4, and then distributed on the end surface of the turntable 4. In this embodiment, the spacing between the end face of the large diameter end of the first baffle 61 and the disk surface of the turntable 4 is 2-10mm, and the difference between the inner and outer radii of the end face of the large diameter end of the first baffle 61 is 1-3mm; the spacing between the end face of the large diameter end of the second baffle 62 and the disk surface of the turntable 4 is 2-10mm, and the difference between the inner and outer radii of the end face of the large diameter end of the second baffle 62 is 1-3mm.

[0038] Specifically, the ratio of the outer diameter of the large diameter end of the first baffle 61 to the outer diameter of the rotating disk 4 is 1:10-1:5. In this embodiment, the thickness of the rotating disk 4 is 1 mm, and the diameter of the disk is 100 mm.

[0039] Preferably, the turntable 4 divides the spray hole 5 into two parts, and the turntable 4 corresponds to the middle position of the spray hole 5, and the high-viscosity alkaline mixed absorption liquid entering the spray hole 5 can be sprayed to both sides of the turntable 4. Since the high-viscosity alkaline mixed absorption liquid has a gradient in the axial direction of the hollow shaft 2 after entering the hollow shaft 2, the spray holes 5 on both sides of the turntable 4 are likely to cause the speed difference of the high-viscosity alkaline mixed absorption liquid on both sides of the turntable 4 to be too large. Spraying the high-viscosity alkaline mixed absorption liquid to both sides of the turntable 4 through one spray hole 5 can reduce the speed difference of the high-viscosity alkaline mixed absorption liquid sprayed from both sides of the turntable 4, which is conducive to the uniform distribution of the high-viscosity alkaline mixed absorption liquid on both sides of the turntable 4. In this embodiment, the inner hole diameter of the hollow shaft 2 is 8.05mm, and the diameter of the spray hole 5 is 3mm.

[0040] Specifically, the plurality of spray holes 5 of the spray hole group are evenly distributed around the circumference of the axis of the hollow rotating shaft 2 , so that the high-viscosity alkaline mixed absorption liquid can be evenly sprayed toward the rotating disk 4 along the circumferential direction.

[0041] Preferably, multiple turntables 4, baffle assemblies corresponding to the multiple turntables 4, and spray hole groups corresponding to the multiple turntables 4 are arranged along the axial direction of the hollow shaft 2. The multiple turntables 4 can increase the gas-liquid contact area, which is beneficial to improving the mass transfer efficiency. After the high-viscosity alkaline mixed absorption liquid flies out from the edge of the turntable 4, it will spread on the inner wall of the shell 1 to form an annular liquid film. The spacing between adjacent turntables 4 is set to 10mm-50mm to ensure that the multiple annular liquid films formed by the multiple turntables 4 do not overlap or have too large spacing, so as to make full use of the effective gas-liquid contact area of ​​the inner wall of the shell 1 to achieve sufficient mixing of ship exhaust gas and high-viscosity alkaline mixed absorption liquid.

[0042] Specifically, the axes of the air inlet pipe 81 and the exhaust pipe 82 are located between two adjacent turntables 4 .

[0043] Specifically, the hollow rotating shaft 2 is a stepped shaft, and a plurality of rotating disks 4 are fixed on the hollow rotating shaft 2 by means of a first locking nut 21, a first sleeve 22 and a second sleeve 23. This embodiment is described by taking the installation of three rotating disks 4 as an example, wherein the first rotating disk 4 is sleeved on the shaft head of the hollow rotating shaft 2 and abutted against the shaft shoulder of the hollow rotating shaft 2, and then the first first sleeve 22 is sleeved to press the first rotating disk 4. The second rotating disk 4 is sleeved on the hollow rotating shaft 2 and abutted against the end face of the first first sleeve 22, and then the second first sleeve 22 is sleeved to press the second rotating disk 4. The third rotating disk 4 is sleeved on the hollow rotating shaft 2 and abutted against the end face of the second first sleeve 22, and then the second sleeve 23 is sleeved to press the third rotating disk 4. The first locking nut 21 is screwed onto the hollow rotating shaft 2, and the first locking nut 21 presses the second sleeve 23 to fix the three rotating disks 4 on the hollow rotating shaft 2.

[0044] Specifically, the first sleeve 22 is fixedly sleeved with a first baffle 61 and a second baffle 62, and the second sleeve 23 is fixedly sleeved with a first baffle 61. The hollow shaft 2 is also sleeved with a third sleeve 24, which is located on the side of the shoulder away from the rotating disk 4 and abuts against the shoulder, and is fixed to the hollow shaft 2 by a second locking nut 25. The third sleeve 24 is fixedly sleeved with a second baffle 62. The first sleeve 22 and the first baffle 61 and the second baffle 62 thereon, the second sleeve 23 and the first baffle 61 thereon, and the third sleeve 24 and the second baffle 62 thereon can all be integrally processed and formed.

[0045] Specifically, the turntable 4 and the hollow shaft 2 can be connected by splines to limit relative rotation, for example, splines are provided on the hollow shaft 2 and external threads are processed, and spline grooves are provided on the turntable 4, the first sleeve 22, the second sleeve 23 and the third sleeve 24, which are not shown in the figure. After the turntable 4, the first sleeve 22 and the second sleeve 23 are installed in sequence, the first locking nut 21 is screwed on to fix the turntable 4, and after the third sleeve 24 is installed, the second locking nut 25 is screwed on to fix the third sleeve 24.

[0046] Specifically, the outer diameters of the first sleeve 22, the second sleeve 23 and the third sleeve 24 are consistent with the outer diameter of the shoulder of the hollow rotating shaft 2, so as to reduce the speed difference of the high-viscosity alkaline mixed absorption liquid sprayed from both sides of the rotating disk 4. The first sleeve 22, the second sleeve 23 and the third sleeve 24 are uniformly provided with a plurality of long holes along the circumferential direction, and the plurality of long holes correspond to the plurality of spray holes 5 of the corresponding spray hole group one by one, so as to ensure that the spray holes 5 can leak normally after being installed in place.

[0047] Preferably, mesh grooves 41 are provided on both sides of the turntable 4, and the mesh grooves 41 include a plurality of radial grooves 411 evenly distributed along the circumferential direction of the turntable 4 and a plurality of concentric annular grooves 412 arranged along the radial direction of the turntable 4. That is, the plurality of radial grooves 411 are arranged in a spoke shape, and the plurality of concentric annular grooves 412 intersect with the radial grooves 411. The mesh grooves 41 can increase the specific surface area of ​​the turntable 4 and the residence time of the high-viscosity alkaline mixed absorption liquid on the turntable 4, thereby improving the mass transfer absorption efficiency of the turntable 4 surface area. In this embodiment, the depth of the mesh grooves 41 is 0.1-0.3 mm.

[0048] Preferably, the radial grooves 411 on the two sides of the turntable 4 correspond to each other, and the annular grooves 412 are staggered along the radial direction of the turntable 4 to ensure the rigidity of the turntable 4 and prevent the edge of the turntable 4 from shaking greatly.

[0049] Preferably, a plurality of liquid separation gaps 42 are provided at the edge of the turntable 4, the liquid separation gaps 42 are located between two adjacent radial grooves 411, and the plurality of liquid separation gaps 42 are evenly distributed at the edge of the turntable 4. When the high-viscosity alkaline mixed absorption liquid flows to the edge of the turntable 4, the high-viscosity alkaline mixed absorption liquid will be divided by the liquid separation gaps 42, and the high-viscosity alkaline mixed absorption liquid will fly out of the liquid separation gaps 42 in the form of liquid lines and liquid droplets, so that more liquid lines and liquid droplets are generated in the cavity of the shell 1, thereby increasing the gas-liquid mixing effect in the cavity of the shell 1, and improving the mass transfer absorption efficiency in the cavity of the shell 1.

[0050] Example 2

[0051] This embodiment also discloses an exhaust gas treatment system using the ship exhaust gas absorption rotating disk reaction device in embodiment 1. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the system includes: a ship exhaust gas storage tank 10, a pressure reducing valve 20, a flow meter 30, an exhaust gas input pipeline, a rotating disk reaction device, an exhaust gas output pipeline, a dryer 40, an online flue gas analyzer 50, an exhaust gas absorption tank 60, an absorption liquid storage tank 70, an absorption liquid input pipeline, a peristaltic pump 80, an absorption liquid output pipeline and a controller.

[0052] The ship exhaust gas storage 10 is connected to the intake pipe 81 of the rotating disk reaction device through the exhaust gas input pipeline. The exhaust gas input pipeline is provided with a pressure reducing valve 20 and a flow meter 30. The pressure reducing valve 20 adjusts the pressure of the ship exhaust gas output from the ship exhaust gas storage 10, and the flow meter 30 controls the flow of the ship exhaust gas entering the intake pipe 81. Furthermore, the exhaust gas input pipeline is also provided with a solenoid valve I, which is located between the flow meter 30 and the intake pipe 81 and is used to control the intake.

[0053] The exhaust pipe 82 of the rotating disk reaction device is connected to the exhaust gas absorption tank 60 through the exhaust gas output pipeline. The dryer 40 and the online flue gas analyzer 50 are arranged on the exhaust gas output pipeline. The treated ship exhaust gas is first dried by the dryer 40 and then passed into the online flue gas analyzer 50 for online real-time detection. The ship exhaust gas after detection is passed into the exhaust gas absorption tank 60. The exhaust gas absorption tank 60 contains alkaline mixed absorption liquid for secondary absorption of the ship exhaust gas. Furthermore, a solenoid valve II is also arranged on the exhaust gas output pipeline. The solenoid valve II is located between the exhaust pipe 82 and the dryer 40 to control the exhaust.

[0054] The absorption liquid storage tank 70 is connected to the liquid inlet pipe 71 through the absorption liquid input pipeline. A peristaltic pump 80 is arranged on the absorption liquid input pipeline. The peristaltic pump 80 regulates the flow rate of the high-viscosity alkaline mixed absorption liquid. Furthermore, a solenoid valve III is also arranged on the absorption liquid input pipeline. The solenoid valve III is located between the liquid inlet pipe 71 and the peristaltic pump 80 and is used to control the liquid inlet.

[0055] The drain pipe 72 is connected to the absorption liquid storage tank 70 through the absorption liquid output pipeline, collects the high-viscosity alkaline mixed absorption liquid for recycling, and replaces it when the high-viscosity alkaline mixed absorption liquid is saturated. Furthermore, a solenoid valve IV is also provided on the absorption liquid input pipeline, and the solenoid valve IV is located between the drain pipe 72 and the absorption liquid storage tank 70 to control the discharge.

[0056] The power device 3, flow meter 30, solenoid valve I, solenoid valve II, online flue gas analyzer 50, peristaltic pump 80, solenoid valve III, and solenoid valve IV are all electrically connected to the controller, and the controller controls the power device 3, flow meter 30, solenoid valve I, solenoid valve II, online flue gas analyzer 50, peristaltic pump 80, solenoid valve III and solenoid valve IV.

[0057] Example 3

[0058] The difference between this embodiment and embodiment 2 is that the exhaust gas treatment system includes a plurality of rotating disk reaction devices connected in parallel.

[0059] The exhaust gas input pipeline, the exhaust gas output pipeline, the absorption liquid input pipeline and the absorption liquid output pipeline are all provided with branches respectively connected to each rotating disk reaction device, and each branch of the exhaust gas input pipeline is provided with a flow meter 30. The exhaust gas treatment system is provided with multiple rotating disk reaction devices in parallel according to the demand to meet the removal efficiency of the ship's exhaust gas.

[0060] Example 4

[0061] This embodiment discloses a method based on a ship exhaust gas absorption rotating disk reactor, and performs exhaust gas treatment through an exhaust gas treatment system using the ship exhaust gas absorption rotating disk reactor. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the method comprises the following steps:

[0062] S1, start the exhaust gas treatment system, the controller controls the high-speed motor of the power device 3 to start, and the controller adjusts the speed of the high-speed motor of the power device 3 to reach a specified speed range.

[0063] S2, the ship exhaust gas storage 10 outputs the ship exhaust gas, and the pressure reducing valve 20 reduces the pressure of the ship exhaust gas output from the ship exhaust gas storage 10; the controller controls the flow meter 30 to adjust the flow rate of the ship exhaust gas to reach the specified flow rate range, and then the ship exhaust gas is introduced into the rotating disk reaction device; the exhaust gas input pipeline is connected to the air inlet pipe 81 of the rotating disk reaction device, and the ship exhaust gas is introduced through the air inlet pipe 81. The absorption liquid storage tank 70 outputs high-viscosity alkaline mixed absorption liquid under the action of the peristaltic pump 80, and the controller controls the peristaltic pump 80 to adjust the flow rate of the high-viscosity alkaline mixed absorption liquid to reach the specified flow rate range, and then the high-viscosity alkaline mixed absorption liquid is introduced into the rotating disk reaction device; the absorption liquid storage tank 70 is connected to the liquid inlet pipe 71 of the rotating disk reaction device through the absorption liquid input pipeline, and the high-viscosity alkaline mixed absorption liquid is introduced into the hollow shaft 2 through the liquid inlet pipe 71. The high-viscosity alkaline mixed absorption liquid enters the hollow rotating shaft 2, and the high-viscosity alkaline mixed absorption liquid is sprayed out from the spray hole 5 under the action of centrifugal force; the high-viscosity alkaline mixed absorption liquid on both sides of the rotating disk 4 is refracted multiple times in the first refraction channel and the second refraction channel respectively, and the high-viscosity alkaline mixed absorption liquid is spread on the two side surfaces of the rotating disk 4 under the action of the first baffle 61 and the second baffle 62 to form a liquid film; the centrifugal force generated by the high-speed rotation of the rotating disk 4 brings the high-viscosity alkaline mixed absorption liquid to the edge of the rotating disk 4, and the high-viscosity alkaline mixed absorption liquid is divided by the liquid separation gap 42, and the high-viscosity alkaline mixed absorption liquid flies out from the edge of the rotating disk 4 in the form of liquid lines and droplets and is thrown onto the inner wall of the shell 1 to form a liquid film; the liquid film on the rotating disk 4, the liquid lines and droplets in the shell 1, and the liquid film on the inner wall of the shell 1 are fully in contact with the ship exhaust gas for mass transfer absorption, so as to obtain the treated ship exhaust gas and waste liquid.

[0064] S3, the treated ship exhaust gas is discharged from the rotating disk reaction device and transported to the dryer 40. The treated ship exhaust gas is dehydrated in the dryer 40 and then transported to the online flue gas analyzer 50. The controller controls the online flue gas analyzer 50 to detect the concentration of different components in the treated ship exhaust gas in real time. The treated ship exhaust gas is passed into the exhaust gas absorption tank 60 after detection; the exhaust pipe 82 of the rotating disk reaction device is connected to the exhaust gas absorption tank 60 through the exhaust gas output pipeline, and the treated ship exhaust gas is discharged from the exhaust pipe 82; there may be a very small proportion of pollutant gas components remaining in the treated ship exhaust gas, and the exhaust gas absorption tank 60 filled with alkaline mixed absorption liquid is used to further absorb the treated ship exhaust gas to avoid secondary pollution. The online flue gas analyzer 50 transmits the analysis results to the controller, and the controller outputs control instructions to control the power device 3, the flow meter 30, the online flue gas analyzer 50 and the peristaltic pump 80.

[0065] S4, the high viscosity alkaline mixed absorption liquid in the rotating disk reaction device is in dynamic flow, and the waste liquid obtained after the high viscosity alkaline mixed absorption liquid absorbs the ship exhaust gas flows to the bottom of the rotating disk reaction device and is discharged into the absorption liquid storage tank 70. The drain pipe 72 of the rotating disk reaction device is connected to the absorption liquid storage tank 70 through the absorption liquid output pipeline, and the treated high viscosity alkaline mixed absorption liquid is discharged from the drain pipe 72 to the absorption liquid storage tank 70, so that the high viscosity alkaline mixed absorption liquid is recycled and the absorption capacity of the high viscosity alkaline mixed absorption liquid is fully utilized. The treatment effect of the rotating disk reaction device can be obtained by the detection data of the components in the treated ship exhaust gas by the online flue gas analyzer 50, and then the absorption saturation degree of the high viscosity alkaline mixed absorption liquid can be obtained. When the high viscosity alkaline mixed absorption liquid basically no longer has the absorption capacity, it is re-prepared and replaced.

[0066] S5, cycle from S1 to S4 until the ship exhaust gas treatment is completed.

[0067] Preferably, the speed range of the high-speed motor of the power device 3 is 500-5000r / min, the flow rate range of the ship exhaust gas is 1-10L / min, and the flow rate range of the high-viscosity alkaline mixed absorption liquid is 1-20L / min. By controlling the flow rate of the ship exhaust gas and the flow rate of the high-viscosity alkaline mixed absorption liquid in the rotating disk reaction device, the gas-liquid ratio in the rotating disk reaction device is ensured to be within a suitable range, thereby improving the absorption effect of the ship exhaust gas.

[0068] Preferably, the high-viscosity alkaline mixed absorption liquid is prepared from seawater, NaOH and C3H8O3, the molar concentration range of NaOH is 0.5-2 mol, and the mass fraction range of C3H8O3 is 5%-15%, which can ensure that the high-viscosity alkaline mixed absorption liquid can efficiently absorb ship exhaust gas.

[0069] Preferably, CO2, SO x and NO x The volume percentage concentration ranges are 3%-10%, 100-2000ppm and 200-1500ppm respectively. The main components of ship exhaust gas include CO2, SO x and NO x However, the diesel engine models and fuel types used by different ships are different, resulting in different volume percentage concentrations of ship exhaust components. Therefore, this method is not suitable for CO2, SO x and NO x The volume percentage concentration range of 3%-10%, 100-2000 ppm and 200-1500 ppm is more effective in treating ship exhaust gas.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rotating disk reaction device for absorbing ship exhaust gas, comprising: A shell (1), a hollow rotating shaft (2) arranged in the shell (1), a power device (3) for driving the hollow rotating shaft (2) to rotate, a rotating disk (4) sleeved on the hollow rotating shaft (2), and a spray hole group provided on the hollow rotating shaft (2), wherein the spray hole group comprises a plurality of spray holes (5), and the opening direction of the spray holes (5) is aligned with the rotating disk (4); characterized in that a baffle assembly is also sleeved on the hollow rotating shaft (2), and the baffle assembly comprises a first baffle (61) and a second baffle (62), the first baffle (61) and the second baffle (62) are located on both sides of the rotating disk (4), a first refraction channel is formed between the first baffle (61) and the rotating disk (4), and a second refraction channel is formed between the second baffle (62) and the rotating disk (4); The first baffle (61) is a conical tube, with the large diameter end of the first baffle (61) facing the rotating disk (4); the second baffle (62) is a conical tube, with the large diameter end of the second baffle (62) facing the rotating disk (4), and the cone angles of the first baffle (61) and the second baffle (62) are both 120 degrees; A plurality of rotating disks (4), baffle assemblies corresponding one-to-one to the plurality of rotating disks (4), and spray hole groups corresponding one-to-one to the plurality of rotating disks (4) are arranged along the axial direction of the hollow rotating shaft (2).

2. A rotating disk reaction device for absorbing ship exhaust gas according to claim 1, characterized in that: The end surface of the first baffle (61) facing the turntable (4) is parallel to the disk surface of the turntable (4); and the end surface of the second baffle (62) facing the turntable (4) is parallel to the disk surface of the turntable (4).

3. A rotating disk reaction device for absorbing ship exhaust gas according to claim 1, characterized in that: The rotating disk (4) divides the spray hole (5) into two.

4. A rotating disk reaction device for absorbing ship exhaust gas according to claim 1, characterized in that: The distance between adjacent rotating disks (4) is 10 mm to 50 mm.

5. The ship exhaust gas absorption rotating disk reaction device according to claim 1, characterized in that: The two side surfaces of the rotating disk (4) are provided with mesh grooves (41), the mesh grooves (41) comprising a plurality of radial grooves (411) uniformly arranged along the circumference of the rotating disk (4) and a plurality of concentric annular grooves (412) arranged along the radial direction of the rotating disk (4).

6. A rotating disk reaction device for absorbing ship exhaust gas according to claim 5, characterized in that: The radial grooves (411) on the two side surfaces of the rotating disk (4) correspond to each other, and the annular grooves (412) are staggered along the radial direction of the rotating disk (4).

7. A rotating disk reaction device for absorbing ship exhaust gas according to claim 5, characterized in that: A plurality of liquid separation gaps (42) are provided on the edge of the rotating disk (4), and the liquid separation gaps (42) are located between two adjacent radial grooves (411).

8. The ship exhaust gas absorption rotating disk reaction device according to claim 1, characterized in that: One end of the hollow rotating shaft (2) is connected to the power device (3), and the other end is connected to a liquid inlet pipe (71); a liquid discharge pipe (72) is also provided below the shell (1); and an air inlet pipe (81) and an air exhaust pipe (82) are also provided on the shell (1).

9. A rotating disk reaction device for absorbing ship exhaust gas according to claim 8, characterized in that: The axes of the air intake pipe (81) and the exhaust pipe (82) are arranged vertically, and the axes of the air intake pipe (81) and the exhaust pipe (82) are perpendicular to the axis of the hollow rotating shaft (2).

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