Magnetic Fenton catalyst reaction device

Abstract

The utility model relates to a magnetic Fenton catalyst reaction device. The magnetic Fenton catalyst reaction device comprises a reaction chamber and an electromagnet assembly arranged in the reaction chamber, the electromagnet assembly comprises a stirring unit arranged in the middle and an electromagnetic unit arranged at the bottom of the stirring unit. The utility model provides a magnetic Fenton catalyst reaction device which can be used for accurately separating a powdery magnetic heterogeneous Fenton catalyst from a heterogeneous Fenton system and quickly and directly desorbing and returning the powdery magnetic heterogeneous Fenton catalyst to a heterogeneous Fenton reaction system after the powdery magnetic heterogeneous Fenton catalyst is separated, so that the particle structure of the catalyst is reserved, and the cyclic utilization efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sewage treatment technical field, especially relate to a magnetic fenton catalyst reaction device. BACKGROUND

[0002] In the sewage treatment process, often adopt powdery magnetic heterogeneous fenton catalyst, in the wide pH range and temperature range, realize catalytic reaction, and the multiple organic pollutants in sewage are degraded efficiently.But, powdery magnetic heterogeneous fenton catalyst, in the actual application process, sludge can be produced, once magnetic catalyst mixes uniformly with sludge, then the catalyst is separated from sludge very difficultly.Usually, will utilize magnetic collector outside fenton reaction container, to powdery magnetic heterogeneous catalyst, is recycled, then the powdery magnetic heterogeneous fenton catalyst of recycling is added to the reactor again, and the catalyst pollution problem caused greatly increases the complexity of process;In addition, in the recycling process, due to the need to use external force, can lead to catalyst crushing, destroys its integrity.

[0003] Therefore, how to provide a reaction device, can accurately separate powdery magnetic heterogeneous fenton catalyst from multiphase fenton system, after separation, can quickly, directly desorption, return to multiphase fenton reaction system, retain catalyst particle structure, improve the recycling efficiency, is the technical problem to be solved in the field. UTILITY MODEL CONTENT

[0004] To solve at least one of the above technical problems, the utility model provides a magnetic fenton catalyst reaction device, comprising: reaction chamber and the electromagnet assembly arranged in the reaction chamber;

[0005] The electromagnet assembly comprises: a stirring unit arranged in the middle, and an electromagnetic unit arranged at the bottom of the stirring unit.

[0006] Further, the electromagnetic unit comprises: a horizontal electromagnetic component and a vertical electromagnetic component.

[0007] The horizontal electromagnetic component is horizontally arranged at the bottom of the stirring unit.

[0008] The vertical electromagnetic component is vertically arranged upwards on the horizontal electromagnetic component.

[0009] Further, the bottom of the reaction chamber is provided with an inwardly downward guiding portion.

[0010] The horizontal electromagnetic component is arranged parallel to the inner surface of the guiding portion.

[0011] Further, the reaction chamber is cylindrical, and the bottom is provided with a conical guiding portion.

[0012] The horizontal electromagnetic component is arranged parallel to the conical surface of the guiding portion.

[0013] Further, the stirring unit comprises a stirring shaft arranged in the middle and a driver connected with the stirring shaft.

[0014] Further, a deposition groove is arranged at the center of the bottom of the guide part.

[0015] The electromagnetic unit further comprises a terminal electromagnetic component arranged at the bottom of the stirring shaft, and the terminal electromagnetic component extends into the deposition groove.

[0016] Further, a sludge discharge pipe is arranged at the bottom of the deposition groove.

[0017] Further, the inclination angle of the conical surface of the guide part is 20-60°.

[0018] Further, a telescopic assembly is arranged at the top of the electromagnetic component.

[0019] Further, the telescopic length of the telescopic assembly is the same as the depth of the deposition groove.

[0020] In this embodiment, a magnetic Fenton catalyst reaction device is provided. In use, Fenton water and hydrogen peroxide flow into the reaction chamber of the magnetic Fenton catalyst reaction device, and the stirring unit is started to stir. Under the catalytic action of the powdered magnetic heterogeneous Fenton catalyst, the hydrogen peroxide produces hydroxyl radicals, which react with the organic matter in the water to achieve the purpose of wastewater treatment. After the Fenton reaction is completed, the stirring unit is slowed down, and the electromagnetic unit arranged at the bottom of the stirring unit is started to magnetically adsorb the powdered magnetic heterogeneous Fenton catalyst on the electromagnetic component, so as to accurately separate the catalyst from the heterogeneous Fenton system. When the Fenton reaction needs to be performed again, the electromagnetic component is turned off to quickly and directly desorb the catalyst and return it to the heterogeneous Fenton reaction system. Then, the above Fenton reaction process is repeated to start a new reaction cycle. Since the powdered magnetic heterogeneous Fenton catalyst is recycled and reused by using the electromagnetic property of the electromagnet, and the recycling and reaction processes are both carried out in the reaction chamber without the need for external force, the particle structure of the catalyst is not damaged, and the catalyst does not need to be placed in the reaction chamber again, which greatly improves the recycling efficiency of the catalyst. In summary, the magnetic Fenton catalyst reaction device provided by the present application can accurately separate the powdered magnetic heterogeneous Fenton catalyst from the heterogeneous Fenton system, and the separated catalyst can be quickly and directly desorbed and returned to the heterogeneous Fenton reaction system, thereby retaining the particle structure of the catalyst and improving the recycling efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following briefly introduces the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below only show some of the embodiments of the present application, and the person skilled in the art can obtain other drawings according to the structures shown in the drawings without creative labor. The same components are denoted by the same reference numerals in the drawings. The drawings are not drawn according to the actual proportion.

[0022] Figure 1 It is a schematic view of an embodiment of the magnetic Fenton catalyst reaction device of the present application.

[0023] Figure 2 It is an internal plan view of an embodiment of the magnetic Fenton catalyst reaction device of the present application. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor are within the scope of protection of the present application.

[0025] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be a middle element.

[0026] It should also be noted that if the present application embodiments involve directional indications, such as up, down, left, right, front, back, etc., the directional indications are only used to explain the relative position relationship, movement, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly. In addition, if the present application embodiments involve descriptions such as "first, second", "S1, S2", "step one, step two", etc., such descriptions are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or the number of indicated technical features or indicating the execution order of the method, etc. The person skilled in the art can understand that any modification within the technical concept of the present application without deviating from the main points of the present application should be included in the protection scope of the present application.

[0027] The present application provides a magnetic Fenton catalyst reaction device, which refers to Figure 1 and Figure 2, comprising: a reaction chamber 1 and an electromagnet assembly 2 arranged in the reaction chamber;

[0028] The electromagnet assembly 2 comprises a stirring unit 21 arranged in the middle and an electromagnetic unit 22 arranged at the bottom of the stirring unit.

[0029] In this embodiment, a magnetic Fenton catalyst reaction device is provided. In use, Fenton water and hydrogen peroxide flow into the reaction chamber of the magnetic Fenton catalyst reaction device, the stirring unit is started, the stirring unit arranged in the middle starts stirring, the hydrogen peroxide is catalyzed by the powdered magnetic heterogeneous Fenton catalyst to generate hydroxyl radicals, which react with the organic matter in the water to achieve the purpose of wastewater treatment; after the Fenton reaction is completed, the stirring unit is stirred at a reduced speed, the electromagnetic unit arranged at the bottom of the stirring unit is started, so that the powdered magnetic heterogeneous Fenton catalyst is magnetically adsorbed on the electromagnetic assembly and accurately separated from the heterogeneous Fenton system; when the Fenton reaction needs to be performed again, the electromagnet assembly is only needed to be turned off, so that the catalyst is quickly and directly desorbed and returned to the heterogeneous Fenton reaction system, and then the above Fenton reaction process is repeated to start a new reaction cycle. Since the powdered magnetic heterogeneous Fenton catalyst is recycled and reused by using the electromagnetism of the electromagnet, and the recycling and reaction processes are both in the reaction chamber without the need for external force, the particle structure of the catalyst is not damaged, and the catalyst does not need to be reloaded into the reaction chamber, so the recycling efficiency of the catalyst is greatly improved. In summary, the magnetic Fenton catalyst reaction device provided by the application can accurately separate the powdered magnetic heterogeneous Fenton catalyst from the heterogeneous Fenton system, quickly and directly desorb the separated catalyst, return the desorbed catalyst to the heterogeneous Fenton reaction system, retain the particle structure of the catalyst, and improve the recycling efficiency.

[0030] Preferably, the electromagnetic unit 22 comprises a horizontal electromagnetic member 22a and a vertical electromagnetic member 22b.

[0031] The horizontal electromagnetic member 22a is horizontally arranged at the bottom of the stirring unit 21.

[0032] The vertical electromagnetic member 22b is vertically arranged upward on the horizontal electromagnetic member 22a.

[0033] In this embodiment, the horizontal electromagnetic member is used for adsorption and separation of the magnetic catalyst deposited at the bottom of the reaction chamber and mixed with the solid-phase sludge, and the vertical electromagnetic member is used for separation of the magnetic catalyst in the liquid phase in the reaction chamber. The combination of the horizontal electromagnetic member and the vertical electromagnetic member significantly improves the adsorption and recycling efficiency of the magnetic catalyst by providing a multi-dimensional magnetic field. Specifically, the number of horizontal electromagnetic members is 12, which are evenly distributed at the bottom of the stirring unit; and 9 vertical electromagnetic members are evenly arranged on each horizontal electromagnetic member, so as to ensure that there is no dead angle in the reaction chamber and greatly improve the separation effect of the magnetic catalyst.

[0034] Preferably, the bottom of the reaction chamber is provided with an inner downwardly inclined guide portion; the transverse electromagnetic member is arranged parallel to the inner surface of the guide portion. More preferably, taking a circular shape as an example, referring to Figure 1 , the reaction chamber 1 is cylindrical, and the bottom is provided with a conical guide portion 11a;

[0035] The transverse electromagnetic member 22a is arranged parallel to the conical surface of the guide portion 3.

[0036] In this embodiment, the reaction chamber is cylindrical, and a conical guide portion is additionally provided at the bottom. The magnetic heterogeneous Fenton catalyst with large particle size is not captured by the longitudinal electromagnetic assembly, so that after the magnetic heterogeneous Fenton catalyst with large particle size is mixed with sludge, the mixture is deposited on the conical surface at the bottom under the action of gravity and the conical surface. The transverse electromagnetic member is arranged parallel to the conical surface of the guide portion, and under the rotation of the stirring unit, it can fully adsorb the magnetic heterogeneous Fenton catalyst particles existing on the conical surface at the bottom. Through the dual action of physical guidance and magnetic adsorption, efficient separation and recovery of the powdered magnetic catalyst are realized. The sludge deposited on the conical surface at the bottom can be manually removed or removed by a sludge pumping device.

[0037] Preferably, the stirring unit 21 comprises a stirring shaft 21b arranged in the middle and a driver 21a connected with the stirring shaft.

[0038] In this embodiment, the stirring unit is powered by the driver to produce continuous rotary motion of stirring. On the one hand, the powdered magnetic heterogeneous Fenton catalyst is in full contact with the organic pollutants in the sewage, avoiding the phenomenon of excessively high or low local reactant concentration, and ensuring that the Fenton reaction proceeds uniformly and quickly throughout the reaction chamber. On the other hand, when separating the powdered magnetic heterogeneous Fenton catalyst from the heterogeneous Fenton system, the magnetic adsorption of the catalyst can be accelerated to assist the magnetic separation of the catalyst and improve the efficiency of the catalyst recycling. For example, the driver 21a is a speed-regulating motor. During the Fenton reaction, the speed-regulating motor drives the stirring shaft to rotate at a speed of 200-600 revolutions per minute, so as to improve the Fenton reaction rate. During the magnetic separation stage, the speed-regulating motor drives the stirring shaft to rotate at a speed of 10-100 revolutions per minute, so as to improve the magnetic separation efficiency.

[0039] More preferably, a deposition groove 3 is arranged at the center of the bottom of the guide portion 11a.

[0040] The electromagnetic assembly 2 further comprises a terminal electromagnetic member 23 arranged at the bottom of the stirring shaft 21b, and the terminal electromagnetic member 23 extends into the deposition groove 3.

[0041] In this embodiment, a deposition groove is additionally arranged at the center of the bottom of the guide part. Non-magnetic sludge and a small amount of magnetic heterogeneous Fenton catalyst which is not separated will flow into the center of the deposition groove along the taper surface of the guide part. The end electromagnetic member extends into the groove to separate the small amount of magnetic heterogeneous Fenton catalyst by magnetic adsorption. Preferably, the end electromagnetic member is a strong magnetic unit with a higher magnetism than the electromagnetic unit. The strong magnetism is used to concentrate and recycle the large amount of magnetic heterogeneous Fenton catalyst accumulated in the deposition groove, thereby avoiding the loss of the magnetic heterogeneous Fenton catalyst in the sludge discharge process. It can be understood that the longitudinal electromagnetic member completes the first-stage separation and recycling of the magnetic heterogeneous Fenton catalyst in the reaction chamber; the transverse electromagnetic member completes the second-stage separation and recycling of the magnetic heterogeneous Fenton catalyst on the guide part; and finally, the end electromagnetic member completes the third-stage separation and recycling of the magnetic heterogeneous Fenton catalyst in the deposition groove. Through the three-stage separation and recycling, the recycling and reuse rate of the magnetic heterogeneous Fenton catalyst is greatly improved.

[0042] More preferably, the bottom of the deposition groove 3 is provided with a sludge discharge pipe, so that the magnetic catalyst is adsorbed on the electromagnetic assembly for recycling; and the sludge is discharged through the sludge pipe under the action of gravity through the taper guide, thereby achieving a better separation effect.

[0043] More preferably, the inclination angle of the taper surface of the guide part 11a is 20° to 60°. On the one hand, the sludge deposited at the bottom can naturally slide and concentrate into the deposition groove under the action of gravity, thereby avoiding the sludge remaining on the inclined surface due to the too small inclination angle. On the other hand, the sliding speed of the magnetic catalyst and the sludge is prevented from being too fast, so that the contact time of the magnetic catalyst with the magnetic field of the electromagnetic unit is sufficient, thereby preventing incomplete adsorption and reducing the recycling efficiency.

[0044] More preferably, the magnetic Fenton catalyst reaction device further comprises a telescopic assembly 4 arranged at the top of the electromagnet assembly 2.

[0045] In this embodiment, a telescopic assembly is additionally arranged at the top end of the electromagnet assembly, which is used to adjust the up-down position of the electromagnet assembly in the reaction chamber. After the magnetic catalyst is separated and adsorbed, the telescopic function of the telescopic assembly is used to lift the end electromagnetic member into the reaction chamber, and the electromagnet assembly is closed, so that the magnetic catalyst reenters the reaction chamber, thereby achieving effective desorption of the magnetic catalyst and achieving a better separation effect. More preferably, the telescopic length of the telescopic assembly is the same as the depth of the deposition groove, thereby preventing the end electromagnetic member from colliding with the bottom of the deposition groove during debugging or operation, and greatly improving the safety of the equipment. Optionally, the telescopic assembly is a threaded rod or a turbine worm or a pneumatic telescopic rod or other mechanical devices with telescopic function.

[0046] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several deformations and improvements can be made, which belong to the protection range of the utility model.

Claims

1. A magnetic Fenton catalyst reaction device, characterized by, The application relates to a reaction chamber and an electromagnet assembly arranged in the reaction chamber. The electromagnet assembly comprises a stirring unit arranged in the middle and an electromagnet unit arranged at the bottom of the stirring unit. The electromagnet unit comprises a horizontal electromagnet and a vertical electromagnet. The horizontal electromagnet is horizontally arranged at the bottom of the stirring unit. The vertical electromagnet is vertically arranged upwards on the horizontal electromagnet. The bottom of the reaction chamber is provided with an inner downwardly-inclined guide part.

2. The magnetic Fenton catalyst reaction device according to claim 1, characterized in that, The horizontal electromagnet is arranged parallel to the inner surface of the guide part. The reaction chamber is cylindrical, and the bottom of the reaction chamber is provided with a conical guide part.

3. The magnetic Fenton catalyst reaction device according to claim 2, characterized in that, The horizontal electromagnet is arranged parallel to the conical surface of the guide part. The stirring unit comprises a stirring shaft arranged in the middle and a driver connected with the stirring shaft.

4. The magnetic Fenton catalyst reaction device according to claim 3, characterized in that, A deposition groove is arranged at the center of the bottom of the guide part.

5. The magnetic Fenton catalyst reaction device according to claim 4, characterized in that, The electromagnet unit further comprises a terminal electromagnet arranged at the bottom of the stirring shaft, and the terminal electromagnet extends into the deposition groove. A sludge discharge pipe is arranged at the bottom of the deposition groove.

6. The magnetic Fenton's catalyst reaction device according to claim 5, wherein, The inclination angle of the conical surface of the guide part is 20-60 degrees.

7. The magnetic fenton catalyst reaction device according to claim 3, wherein, The application further comprises a telescopic assembly arranged at the top of the electromagnet assembly.

8. The magnetic Fenton catalyst reaction device according to any one of claims 1 to 7, characterized in that, The telescopic length of the telescopic assembly is the same as the depth of the deposition groove.

9. The magnetic Fenton's catalyst reaction device according to claim 8, wherein, ​

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