Multi-stage turbulent CO2 mineralization reaction tower

Abstract

The utility model relates to the technical field of chemical tail gas treatment, solves the problem that the reaction efficiency is influenced due to insufficient contact of carbon dioxide mineralization reaction equipment, and particularly discloses a multi-stage turbulent CO2 mineralization reaction tower which comprises a shell, a top seal head and a bottom discharge hopper, the top sealing head and the bottom discharging hopper are connected to the top and the bottom of the shell respectively, a spiral flow guide plate is arranged in the shell and spirally arranged around the center axis of the shell in the vertical direction, and a spiral flow guide space is formed between the spiral flow guide plate and the shell. A plurality of ultrasonic oscillation rings are arranged on the spiral guide plate, and oscillation ring mounting holes for accommodating the ultrasonic oscillation rings are formed in the spiral guide plate. The device is used for mineralization reaction treatment of carbon dioxide and solid waste residues, the contact area of carbon dioxide gas and the solid waste residues can be increased, and the reaction efficiency is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical tail gas treatment technical field especially a multistage turbulent CO2 mineralization reaction tower. BACKGROUND

[0002] The solid waste residue cooperates carbon dioxide mineralization to prepare the full solid waste carbon negative product technology, which is an innovative environmental protection technology. It uses the active ingredients in the factory waste residue (such as blast furnace slag, steel slag, etc.) to carry out mineralization reaction with carbon dioxide, generates stable carbonate minerals, and permanently fixes carbon dioxide in the product. This technology not only solves the problem of waste residue treatment and disposal, but also reduces the concentration of carbon dioxide in the atmosphere, thereby slowing down the trend of global warming.

[0003] Specifically, the technology first pretreats the solid waste residue by crushing, grinding, etc. to improve its reaction activity. Then under specific reaction conditions (such as temperature, pressure, catalyst, etc.), the pretreated waste residue is subjected to mineralization reaction with carbon dioxide. During the reaction process, the active ingredients (such as calcium oxide, magnesium oxide, etc.) in the waste residue react with carbon dioxide to form stable carbonate minerals (such as calcium carbonate, magnesium carbonate, etc.). These carbonate minerals not only have good stability and durability, but also can be used as building materials, soil conditioners, etc.

[0004] The existing carbon dioxide mineralization technology has deficiencies in the structure layout of the reaction equipment and the design of the reaction process, which leads to insufficient contact between the solid waste residue and carbon dioxide, affecting the reaction efficiency, and the carbon dioxide content in the tail gas after single process flow treatment still does not meet the requirements. UTILITY MODEL CONTENT

[0005] To solve the problem of insufficient contact between the solid waste residue and carbon dioxide due to the deficiencies in the structure layout of the carbon dioxide mineralization reaction equipment and the design of the reaction process in the prior art, which affects the reaction efficiency, the utility model provides a multistage turbulent CO2 mineralization reaction tower.

[0006] The technical scheme adopted by the utility model is:

[0007] A multistage turbulent CO2 mineralization reaction tower, comprising an outer shell, a top head and a bottom discharge hopper, the top head and the bottom discharge hopper are connected to the top and bottom of the outer shell respectively, a spiral guide plate is arranged inside the outer shell, the spiral guide plate is spirally arranged along the vertical direction around the central axis of the outer shell, a spiral guide space is formed between the spiral guide plate and the outer shell, a plurality of ultrasonic vibration rings are arranged on the spiral guide plate, and vibration ring mounting holes for accommodating the ultrasonic vibration rings are arranged on the spiral guide plate.

[0008] The spiral guide plate is used to form a spiral flow guide space with the shell, so that the gas in the shell flows along a spiral path; the ultrasonic oscillation ring is used to make the reaction material filled in the flow guide space produce a turbulent state when impacted by the gas through the mechanical energy generated by ultrasonic vibration.

[0009] Further, the spiral guide plate is also provided with a stirring paddle mounting hole for mounting the stirring paddle shaft, the positions of the stirring paddle mounting holes on the spiral guide plate correspond one by one in the vertical direction, the stirring paddle shaft is arranged in the stirring paddle mounting hole, and a plurality of blades are arranged on the part of the shaft located in the flow guide space.

[0010] Further, the shaft and the spiral guide plate are provided with a movable gap for relative rotation between the shaft and the spiral guide plate, and the reaction stirring paddle is used to stir the reaction material filled in the flow guide space.

[0011] Further, a stand is arranged at the axial position of the spiral guide plate and penetrates the entire spiral guide plate in the vertical direction, the top end and the bottom end of the stand are respectively connected with a top frame and a bottom frame, the top frame and the bottom frame are fixedly connected to the inner wall of the shell, and a stirring motor connected with the shaft is arranged on the top frame.

[0012] The stirring motor is used to drive the shaft to rotate, and the stand is used to support the spiral guide plate.

[0013] Further, the bottom discharge hopper is inverted conical and connected with the bottom end of the shell through a connecting flange, a vibration motor is connected to the side surface of the bottom discharge hopper, a discharge disc is arranged on the top of the bottom discharge hopper, and the surface of the discharge disc is arranged in an inclined manner.

[0014] The vibration motor is used to discharge the material by generating vibration transmitted to the bottom discharge hopper, and the discharge disc is used to control the falling of the material and prevent the material from arching and blocking.

[0015] Further, the top head is connected with an air outlet pipe, the shell is respectively connected with a feeding pipe and an air inlet pipe, the feeding pipe is arranged at a position close to the top end of the shell, and a plurality of air inlet pipes are arranged on the shell in the vertical direction according to the height.

[0016] Further, the air inlet pipe is connected with a gas distributor extending into the inside of the shell at the connection position of the air inlet pipe and the shell, a plurality of air outlet holes are arranged on the gas distributor, and the gas distributor is used to distribute the gas entering the shell to different positions in the inside of the shell.

[0017] Further, the shell is also connected with an ear, the ears are symmetrically arranged on the two sides of the shell, and the ears are used to hoist the reaction tower.

[0018] The utility model discloses the beneficial effect is:

[0019] The utility model discloses a multistage turbulent carbon dioxide mineralization reaction tower, the inside has the helical guide vane and forms the helical gas guide space, forces gas to flow with helical path, compared with traditional vertical or horizontal flow, the residence time of gas in the reaction tower is significantly prolonged, the centrifugal force of helical motion makes solid waste slag particle and CO2 gas produce dynamic collision, and the contact area increases, and simultaneously, the high frequency mechanical vibration of ultrasonic wave oscillation ring can further crush material particle, expose more active sites, simultaneously under the vibration effect, the gas flowing from the same makes turbulent, makes gas-solid contact more frequently, improves reaction effect and reaction rate, and the multistage spatial layered turbulent flow of the helical layer of helical guide vane forms, makes carbon dioxide mineralization reaction efficiency significantly improve, and resource utilization rate is effectively optimized, and the structure is more compact, and process synergy is more reasonable. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the whole structure schematic diagram of the reaction tower of the utility model;

[0021] Figure 2 It is Figure 1 The partial view of A place;

[0022] Figure 3 It is the bottom discharge hopper structure schematic diagram of the utility model.

[0023] Reference signs:

[0024] 1, shell, 2, top head, 3, bottom discharge hopper, 4, helical guide vane, 5, ultrasonic wave oscillation ring, 6, reaction stirring paddle, 601, pivot, 602, paddle, 7, stand, 8, top frame, 9, bottom frame, 10, stirring motor, 11, vibration motor, 12, discharge tray, 13, gas outlet pipe, 14, feed pipe, 15, gas inlet pipe, 16, gas distributor, 17, lug. DETAILED DESCRIPTION

[0025] The utility model will be explained in detail in combination with the drawings and examples.

[0026] Example 1

[0027] A multi-stage turbulent CO2 mineralization reaction tower includes an outer shell 1, a top end cap 2, and a bottom discharge hopper 3. The top end cap 2 and the bottom discharge hopper 3 are respectively connected to the top and bottom of the outer shell 1. A spiral guide plate 4 is provided inside the outer shell 1. The spiral guide plate 4 is spirally arranged around the central axis of the outer shell 1 in the vertical direction, and a spiral guide space is formed between the spiral guide plate 4 and the outer shell 1. A plurality of ultrasonic oscillating rings 5 ​​are provided on the spiral guide plate 4, and oscillating ring mounting holes for accommodating the ultrasonic oscillating rings 5 ​​are provided on the spiral guide plate 4.

[0028] The spiral guide plate 4 is used to form a spiral guide space with the outer shell 1, so that the gas inside the outer shell 1 flows along a spiral path; the ultrasonic oscillation ring 5 is used to generate turbulence in the reactant material filled in the guide space when it impacts the gas through the mechanical energy generated by ultrasonic vibration.

[0029] The ultrasonic oscillating ring 5 in this invention is one form of ultrasonic oscillator, operating on the same principle as an ultrasonic oscillator. The ultrasonic oscillating ring 5 works based on the piezoelectric effect, and its core components include an ultrasonic generator and a transducer (such as...). Figure 2 As shown, it can be set at the bottom of the ultrasonic oscillating ring 5. The generator converts electrical energy into a high-frequency electrical signal. The transducer converts the electrical signal into mechanical vibration through the inverse piezoelectric effect of the piezoelectric material. The working process is as follows: electrical energy conversion, mechanical vibration, and waveguide propagation. This gives the ultrasonic waves high penetration and high energy transfer efficiency when propagating in the medium, and can induce interactions between medium molecules. In chemical reactions, it can accelerate the reaction through cavitation, thereby improving the efficiency and completeness of the reaction. The ultrasonic oscillating ring 5 and the spiral guide plate 4 are intersecting. Each ultrasonic oscillating ring 5 is fixed to the spiral guide plate 4 through two oscillating ring mounting holes. While the ultrasonic waves propagate to the gas, they also conduct vibration to the spiral guide plate 4, allowing the vibration energy to be transferred to the solid material on the spiral guide plate 4, further enhancing the turbulence effect.

[0030] The spiral guide plate 4 forms a spiral-shaped gas guide space that can force the gas to flow in a spiral path, significantly prolonging the residence time of the gas in the reaction tower compared to traditional vertical or horizontal flow. The centrifugal force generated by the spiral motion causes dynamic collision between the solid waste residue particles and the CO2 gas, increasing the contact area. At the same time, the ultrasonic vibration ring 5 produces high-frequency mechanical vibration, which can further crush the material particles and expose more active sites. Under the effect of vibration, the gas flowing through the space forms turbulence, making gas-solid contact more frequent and improving reaction efficiency and reaction rate. The spiral guide plate 4 forms a multi-level spatial layered turbulent flow, significantly improving the carbonation reaction efficiency of carbon dioxide and effectively optimizing resource utilization. The structure is more compact and the process is more reasonable. During operation, the carbonation reaction tower can be filled with steel slag, fly ash, and other solid waste residues inside the shell 1. The waste residue fills the spiral guide space from bottom to top. Due to the multi-layer structure of the guide space, the material falling into the tower can be shaken by the ultrasonic vibration ring 5 when filling, and gradually accumulates and fills. When the solid waste residue material cannot meet the carbonation reaction requirements, the material can be unloaded through the bottom discharge hopper 3 and replaced with new material for operation. The gas can enter from the top or bottom of the tower according to the reaction time requirements. According to the process design requirements and the gas density, the existing technology of the reaction tower can be set up.

[0031] Example 2

[0032] On the basis of the foregoing examples, the spiral guide plate 4 is also provided with a stirring paddle mounting hole for mounting the stirring paddle shaft 601. The stirring paddle mounting hole is one-to-one corresponding in the vertical direction on the spiral guide plate 4. The stirring paddle mounting hole is provided with a rotating shaft 601 of a reaction stirring paddle 6. The rotating shaft 601 is provided with a plurality of paddle blades 602 on the part located in the guide space. The rotating shaft 601 and the spiral guide plate 4 are provided with a movable gap for relative rotation between the rotating shaft 601 and the spiral guide plate 4. The reaction stirring paddle 6 is used to stir the reaction material filled in the guide space. The stirring paddle rotates through the rotating shaft 601 to drive the paddle blades 602 to stir the reaction material, which can form a certain stirring effect on the solid material and reaction gas in the guide space, thereby reducing the relative static area due to the decreasing vibration transmission effect in the guide space and improving the reaction efficiency of this part of the area

[0033] As a preferred embodiment, the spiral guide plate 4 is provided with a vertical column 7 penetrating through the entire spiral guide plate 4 at the position of the axis of the spiral guide plate 4, the top end and the bottom end of the vertical column 7 are respectively connected with a top frame 8 and a bottom frame 9, the top frame 8 and the bottom frame 9 are fixedly connected to the inner wall of the shell 1, and the top frame 8 is provided with a stirring motor 10 connected with the rotating shaft 601; wherein the stirring motor 10 is used to drive the rotating shaft 601 to rotate, and the vertical column 7 is used to support the spiral guide plate 4. The vertical column 7 can support the spiral guide plate 4, cooperate with the fixation of the top frame 8 and the bottom frame 9, avoid the spiral guide plate 4 from being deviated, dislocated, fallen off and the like due to the influence of the vibration of the ultrasonic vibration ring 5 in the working process, and cause the path of the guide space to be affected, so that the reaction is insufficient. Preferably, a protective cover can be arranged on the stirring motor 10 to avoid the erosion of the stirring motor 10 by the materials in the tower and the reaction process.

[0034] Example 3

[0035] On the basis of the foregoing embodiment, the bottom discharge hopper 3 is in an inverted conical shape and is connected with the bottom end of the shell 1 through a connecting flange, the side surface of the bottom discharge hopper 3 is connected with a vibration motor 11, and the top portion in the bottom discharge hopper 3 is provided with a discharge disc 12, and the surface of the discharge disc 12 is in an inclined shape; wherein the vibration motor 11 is used to discharge materials by generating vibration transmitted to the bottom discharge hopper 3, and the discharge disc 12 is used to control the falling of the materials and prevent the materials from arching and blocking.

[0036] When the vibration motor 11 is started, the horizontal direction excitation force generated by the vibration motor 11 is transmitted to the entire inverted conical bottom discharge hopper 3 structure through the side wall of the bottom discharge hopper 3. The vibration energy is uniformly diffused through the inverted conical side wall of the bottom discharge hopper 3, so that the materials accumulated in the discharge hopper are subjected to high-frequency vibration, the static friction between the materials is destroyed, and the arching and bridging phenomena are effectively eliminated. After the materials enter the bottom discharge hopper 3 from the upper bin, the materials first contact the top inclined discharge disc 12. The inclined surface of the discharge disc 12 guides the materials to the edge region thereof to form an annular discharging channel, so as to avoid the materials from being concentrated and accumulated in the central region. At the same time, the inclined surface makes the materials disperse and slide along the inclined surface of the discharge disc 12 under the action of gravity, and forms a loose and continuous material flow in cooperation with the vibration action. The excitation force generated by the vibration motor 11 is transmitted to the material layer through the inverted conical discharge hopper, wherein the normal force (perpendicular to the material flow direction) penetrates into the material interior to destroy the arching, and the tangential force (parallel to the flow direction) promotes the materials to move along the discharge hopper wall to the outlet through the shearing action. The design of the inverted conical structure increases the self-flowing angle of the materials, so that the materials are more smoothly discharged through the outlet under the vibration assistance, and the accumulation and vibration compaction caused by the gentle structure are avoided.

[0037] Example 4

[0038] On the basis of the foregoing embodiment, the top head 2 is connected with a gas outlet pipe 13, the shell 1 is respectively connected with a feed pipe 14 and a gas inlet pipe 15, the feed pipe 14 is arranged at a position close to the top end of the shell 1, and the gas inlet pipe 15 is arranged in multiple along the vertical direction of the shell 1 in terms of height. As a preferred embodiment, the gas inlet pipe 15 is connected with a gas distributor 16 extending into the shell 1 at the connection position of the gas inlet pipe 15 and the shell 1, the gas distributor 16 is provided with multiple gas outlet holes, and the gas distributor 16 is used for distributing the gas entering the shell 1 to different positions inside the shell 1. In the embodiment, the gas path is designed to enter the tower from the bottom and be discharged from the top of the reaction tower, when the density of the processed gas is less than that of air, the path can accelerate the flow speed of the gas and improve the processing capacity, and when the density of the processed gas is greater than that of air, the flow speed of the gas can be reduced and the contact time can be prolonged.

[0039] The gas enters the gas distributor 16 through the multiple gas inlet pipes 15 distributed along the height of the shell 1, and the multiple-stage gas outlet holes inside the gas distributor 16 divide the gas flow into multiple streams and release the gas flow along different height layers. Since the connection position of the gas distributor 16 and the gas inlet pipe 15 covers the vertical direction of the shell 1, the gas flow can act on different level height areas inside the shell 1 at the same time, forming multiple-stage gas-solid contact interfaces. The gas inlet pipes 15 at different heights inject gas into the shell 1, covering the longitudinal space, and when the gas enters from different layers, the local low-pressure area inside the shell can be filled, avoiding the flow dead zone or uneven gas distribution phenomenon caused by a single gas inlet point. The embodiment further improves the mass transfer efficiency and ensures the uniform progress of the reaction.

[0040] Embodiment 5

[0041] On the basis of the foregoing embodiment, the shell 1 is further connected with lugs 17, the lugs 17 are symmetrically distributed on the two sides of the shell 1, and the lugs 17 are used for hoisting the reaction tower. The lugs 17 symmetrically distributed on the two sides of the shell 1 serve as hoisting stress points, and are connected with the lugs 17 through a crane hook during hoisting. During hoisting, the lugs 17 on the two sides simultaneously bear vertical tension and horizontal shear force, and the symmetric design causes the load to be uniformly distributed to the main structure of the shell 1, avoiding local deformation caused by unilateral stress concentration. The rigid connection structure formed by welding the lugs 17 and the shell 1 can directly transmit the hoisting force to the main stress frame of the shell, ensuring the overall stability.

[0042] The foregoing embodiments only express the specific implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that, for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A multi-stage turbulent CO2 mineralization reactor tower, characterized in that, The shell, top head and bottom discharge hopper are connected to the top and bottom of the shell respectively, the shell is internally provided with a spiral guide plate, the spiral guide plate is spirally arranged along the vertical direction around the central axis of the shell, the spiral guide plate and the shell form a spiral flow guide space, a plurality of ultrasonic vibration rings are arranged on the spiral guide plate, and a vibration ring mounting hole for accommodating the ultrasonic vibration ring is arranged on the spiral guide plate. The spiral guide plate is used to make the gas in the shell flow along the spiral path after forming the spiral flow guide space with the shell; the ultrasonic vibration ring is used to make the reaction material filled in the flow guide space produce turbulent state when colliding with the gas through the mechanical energy generated by ultrasonic vibration.

2. The multi-stage turbulent CO2 mineralization reactor of claim 1, wherein, A stirring paddle mounting hole for mounting a stirring paddle shaft is also formed in the spiral guide plate, the positions of the stirring paddle mounting holes on the spiral guide plate correspond one by one in the vertical direction, a rotating shaft of a reaction stirring paddle is arranged in the stirring paddle mounting hole, and a plurality of blades are arranged on the part of the rotating shaft located in the flow guide space. An active gap for relative rotation between the rotating shaft and the spiral guide plate is arranged between the rotating shaft and the spiral guide plate, and the reaction stirring paddle is used to stir the reaction material filled in the flow guide space.

3. The multi-stage turbulent CO2 mineralization reactor of claim 2, wherein, A column is arranged at the axial position of the spiral guide plate and penetrates the entire spiral guide plate in the vertical direction, the top end and the bottom end of the column are connected with a top frame and a bottom frame respectively, the top frame and the bottom frame are fixedly connected to the inner wall of the shell, and a stirring motor connected with the rotating shaft is arranged on the top frame. The stirring motor is used to drive the rotating shaft to rotate, and the column is used to support the spiral guide plate.

4. The multi-stage turbulent CO2 mineralization reactor of claim 1, wherein, The bottom discharge hopper is inverted conical and connected with the bottom end of the shell through a connecting flange, a vibration motor is connected to the side surface of the bottom discharge hopper, a discharge disc is arranged on the top of the bottom discharge hopper, and the surface of the discharge disc is arranged in an inclined manner. The vibration motor is used to discharge the material by generating vibration and transmitting the vibration to the bottom discharge hopper, and the discharge disc is used to control the falling of the material and prevent the material from arching and blocking.

5. The multi-stage turbulent CO2 mineralization reactor of claim 1, wherein, An air outlet pipe is connected to the top head, a feeding pipe and an air inlet pipe are connected to the shell respectively, the feeding pipe is arranged at a position close to the top end of the shell, and a plurality of air inlet pipes are arranged on the shell in the vertical direction according to the height.

6. The multi-stage turbulent CO2 mineralization reactor of claim 5, wherein, A gas distributor extending into the shell is connected to the connection between the air inlet pipe and the shell, a plurality of air outlet holes are arranged on the gas distributor, and the gas distributor is used to distribute the gas entering the shell to different positions in the shell.

7. The multi-stage turbulent CO2 mineralization reactor of claim 1, wherein, Ears are also connected to the shell, the ears are symmetrically distributed on the two sides of the shell, and the ears are used to hoist the reaction tower.

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