CN108975448B - Magnetron built-in microwave enhanced multi-phase catalytic/adsorption fluidized bed sewage treatment system - Google Patents

Abstract

The invention discloses a magnetron-built-in microwave-enhanced multi-phase catalysis/adsorption fluidized bed sewage treatment system. The magnetron-built-in microwave-enhanced multi-phase catalysis/adsorption fluidized bed sewage treatment system includes a waveguide, #1 Annular porous plate, anti-vortex cone, sewage pipe inner core, microwave-permeable sewage pipe, #2 annular porous plate, microwave generating unit, the microwave generating unit includes a magnetron cover and a magnetron tube, the magnetron cover includes Magnetron front cover, magnetron cover connector, magnetron rear cover, magnetron upper holder, magnetron lower holder, both ends of the system are connected to the sewage inlet of the conventional sewage pipe through flanges. Connected to sewage outlet. This system has the advantages of good sewage treatment effect, high microwave energy utilization, the catalyst (or adsorbent) can fully contact with the microwave, and does not occupy additional factory area.

Description

Magnetron built-in microwave enhanced multi-phase catalytic/adsorption fluidized bed sewage treatment system

Technical field

The invention relates to a sewage treatment system, in particular to a magnetron-built-in microwave-enhanced multi-phase catalytic/adsorption fluidized bed sewage treatment system.

Background technique

Microwave-enhanced heterogeneous catalysis/adsorption sewage treatment technology has received widespread attention from scholars and engineers and has been applied in certain engineering applications. When the traditional microwave-enhanced sewage treatment reactor is working, microwaves are first generated by the magnetron, and the generated microwaves then enter the microwave cavity through the waveguide to radiate the catalyst (or adsorbent) in the microwave cavity. However, during the sewage treatment process, on the one hand, the microwave cavity will occupy a large space. In addition, the microwaves in the microwave cavity may return to the magnetron through the waveguide, causing harm to the magnetron and increasing the frequency of maintenance.

Contents of the invention

The purpose of the invention is to provide a magnetron-built-in microwave-enhanced multi-phase catalysis/adsorption fluidized bed sewage treatment system.

The purpose of the present invention is achieved through the following technical solutions:

The magnetron-built-in microwave-enhanced multiphase catalytic/adsorption fluidized bed sewage treatment system of the present invention includes a waveguide, a #1 annular porous plate, an anti-vortex cone, a sewage pipe inner core, a microwave-permeable sewage pipe, and a #2 annular porous plate. board and a microwave generating unit. The microwave generating unit includes a magnetron cover and a magnetron. The magnetron cover includes a magnetron front cover, a magnetron cover connector, a magnetron rear cover, and a magnetron cover. The upper retainer and the lower retainer of the magnetron, both ends of the system are respectively connected to the sewage inlet and sewage outlet of the conventional sewage pipe through flanges.

It can be seen from the above technical solutions provided by the present invention that the magnetron-built-in microwave-enhanced multi-phase catalysis/adsorption fluidized bed sewage treatment system provided by the embodiment of the present invention places the magnetron inside the sewage flow pipe, omitting The microwave cavity is removed; by "embedding" the sewage treatment system in the sewage flow pipe, the space occupied by the sewage treatment system is greatly saved; by arranging a magnetron cover, a sewage pipe inner core and two annular porous plates in the sewage flow pipe , which provides favorable conditions for the fluidization of the catalyst (or adsorbent); by setting up the magnetron cover, the inner core of the sewage pipe and the anti-vortex cone in the sewage flow pipe, the water conservancy conditions are effectively improved; by setting up two The annular porous plate can form a sealed space for microwaves with the waveguide, so that its working range is the same as that of the catalyst (or adsorbent). This system has the advantages of not occupying additional space, high microwave energy utilization, low maintenance frequency, and the microwave can fully contact the catalyst (or adsorbent).

Description of the drawings

Figure 1 is a front view of the magnetron-built-in microwave-enhanced multi-phase catalysis/adsorption fluidized bed sewage treatment system provided by the embodiment of the present invention;

Figure 2 is a dimension diagram of the magnetron-built-in microwave-enhanced multi-phase catalysis/adsorption fluidized bed sewage treatment system provided by the embodiment of the present invention;

Figure 3 is a schematic diagram of the #1 annular porous plate in the magnetron-built-in microwave-enhanced multi-phase catalysis/adsorption fluidized bed sewage treatment system provided by the embodiment of the present invention;

Figure 4 is a schematic diagram of the #2 annular porous plate in the magnetron-built-in microwave-enhanced multi-phase catalysis/adsorption fluidized bed sewage treatment system provided by the embodiment of the present invention;

Figure 5 is a schematic diagram of the magnetron cover in the magnetron-built-in microwave-enhanced multi-phase catalysis/adsorption fluidized bed sewage treatment system provided by the embodiment of the present invention.

In the picture:

1-waveguide; 2-#1 annular porous plate; 3-anti-vortex cone; 4-sewage pipe inner core; 5-microwave-permeable sewage pipe; 6-#2 annular porous plate; 7-microwave generating unit; 8-conventional Sewage pipe; 9-flange; 10-sewage inlet; 11-sewage outlet; 7-1-magnetron cover; 7-2-magnetron; 7-1-1-magnetron front cover; 7-1 -2-Magnetron cover connector; 7-1-3-Magnetron rear cover; A-Magnetron upper holder; B-Magnetron lower holder.

Detailed ways

The embodiments of the present invention will be described in further detail below. Contents not described in detail in the embodiments of the present invention belong to the prior art known to those skilled in the art.

The preferred specific implementation of the magnetron-built-in microwave-enhanced heterogeneous catalysis/adsorption fluidized bed sewage treatment system of the present invention is shown in Figures 1 to 5:

It includes a waveguide, #1 annular porous plate, anti-vortex cone, sewage pipe inner core, microwave-permeable sewage pipe, #2 annular porous plate, and microwave generating unit. The microwave generating unit includes a magnetron cover and a magnetron. The magnetron cover includes a magnetron front cover, a magnetron cover connector, a magnetron rear cover, a magnetron upper holder and a magnetron lower holder. Both ends of the system are connected to each other through flanges respectively. The sewage inlet and sewage outlet of a conventional sewer pipe are connected.

The waveguide, the anti-vortex cone, the inner core of the sewage pipe, the microwave-permeable sewage pipe, and the magnetron cover are all concentric rings in any cross section, and their geometric centers are on the same vertical line. superior.

The microwave-permeable sewage pipe 5 and the conventional sewage pipe 8 have the same inner diameter _L1 .

The distance L between the #1 annular porous plate 2 and the #2 annular porous plate 6 is the sum of the length L 4 of the sewage pipe inner core ₄ and the length L ₃ of the magnetron front cover 7-1-1 , the ratio of the length L ₄ of the sewage pipe inner core 4 to the length L ₃ of the magnetron front cover 7-1-1 is 3-6, and the length L ₃ of the magnetron front cover 7-1-1 is The length L ₂ of the magnetron rear cover 7-1-3 is equal to that of the magnetron rear cover 7-1-3, and the length L ₃ of the magnetron front cover 7-1-1 is 10-15cm.

The ratio of the height L ₅ of the anti-vortex cone 3 to the outer diameter L ₆ of the bottom surface of the anti-vortex cone 3 is 1-4, and the bottom diameter L ₆ of the anti-vortex cone 3 is 2-4 cm.

The #1 annular porous plate 2 and the #2 annular porous plate 6 have the same opening diameter d, which is 1.5-2.5mm, and the opening rate is 90-95%. The major diameter D of the #2 annular porous plate 6 is the same, which is the same as the inner diameter L ₁ of the conventional sewage pipe 8. The minor diameter D ₁ of the #1 annular porous plate 2 is the same as the bottom diameter L ₆ of the anti-vortex cone 3, so The diameter D ₂ of the #2 annular porous plate 6 is the same as the diameter L ₇ of the bottom surface of the magnetron front cover 7-1-1.

The microwave-permeable sewage pipe is made of a material that can be completely penetrated by microwaves. The inner wall of the waveguide and the outer wall of the microwave-permeable sewage pipe are closely attached but not adhered.

The magnetron cover is made of sewage corrosion-resistant material, and the magnetron front cover is made of completely microwave-penetrable material.

The inner core of the sewage pipe is made of completely reflective microwave material.

The magnetron upper holder A and the magnetron lower holder B are four identical cylindrical fixing rods. The magnetron upper holder A is installed in pairs on the magnetron. On the bottom of the front cover 7-1-1 of the tube, the central axis of each pair of fixators is on a straight line, and the straight lines of the two pairs of fixators are perpendicular to each other. The lower fixers B of the magnetron are installed in pairs. On the bottom surface of the magnetron rear cover 7-1-3, the central axis of each pair of the holders is on a straight line, and the straight lines of the two pairs of holders are perpendicular to each other.

In order to solve the problems in the existing technology, this application improves the traditional microwave-enhanced sewage treatment reactor. An effective idea is to make full use of the internal space of the waveguide and cancel the microwave cavity.

When utilizing the internal space of the waveguide, a typical form of utilization is that sewage flows in the waveguide and the catalyst (or adsorbent) works in the waveguide. This form of utilization will produce beneficial effects in at least three aspects. First, the microwave cavity can be eliminated, greatly saving the space required for sewage treatment; secondly, since the microwave directly radiates the sewage and catalyst (or adsorbent) in the waveguide, the microwave returned to the magnetron can be reduced or even eliminated, extending the magnetic field Control the service life; thirdly, the waveguide can be used as a channel for sewage flow and "embedded" in the sewage flow pipe. This is equivalent to adding a special sewage flow pipe with sewage treatment function to the ordinary sewage flow pipe. , can save or even eliminate the space that has to be occupied due to sewage treatment.

The magnetron-built-in microwave-enhanced multi-phase catalysis/adsorption fluidized bed sewage treatment system of the present invention saves the space occupied by the microwave cavity by fully utilizing the internal space of the waveguide; by "embedding" the sewage treatment system in the sewage In the flow pipeline, the space occupied by sewage treatment is further saved; by setting up two annular porous plates, the mode of limiting microwaves and catalysts (or adsorbents) to work in the same space is realized; by making the microwaves flow from the microwave energy output device After being emitted, it directly contacts the sewage and catalyst (or adsorbent), which greatly improves the utilization rate of microwave energy.

Specific examples:

As shown in Figures 1 to 5, it includes waveguide 1, #1 annular porous plate 2, anti-vortex cone 3, sewage pipe inner core 4, microwave-permeable sewage pipe 5, #2 annular porous plate 6, and microwave generating unit 7. The microwave generating unit 7 is composed of a magnetron cover 7-1 and a magnetron 7-2. The magnetron cover 7-1 is composed of a magnetron front cover 7-1-1 and a magnetron cover connector. 7-1-2, magnetron rear cover 7-1-3, magnetron upper holder A, magnetron lower holder B. Both ends of the system are connected to conventional sewage pipes 8 through flanges 9. The sewage inlet and sewage outlet are connected. This system places the magnetron inside the sewage flow pipe, so that after the microwave is emitted from the magnetron, it directly contacts the sewage and catalyst (or adsorbent), which improves the utilization rate of microwave energy and reduces or even eliminates the return to the magnet. Control the microwave in the tube; the two annular porous plates set up in this system have a dual role. On the one hand, the microwave is limited to work in the space between the two annular porous plates. On the other hand, the catalyst (or adsorbent) is also limited to the two annular porous plates. Work in the space between blocks of circular porous plates.

In the above-mentioned magnetron built-in microwave-enhanced multi-phase catalytic/adsorption fluidized bed sewage treatment system, specifically, the waveguide 1, the anti-vortex cone 3, the sewage pipe inner core 4, the microwave-transparent Sewage pipe 5, the magnetron cover 7-1 is a concentric ring in any cross section, and the geometric center is on the same vertical line. By adopting this structure, the water flow, catalyst (or adsorbent) and microwave can be evenly distributed in the entire sewage treatment system, and at the same time, the water flow and catalyst (or adsorbent) can be fully contacted with the microwave.

In the above-mentioned magnetron built-in microwave-enhanced multi-phase catalytic/adsorption fluidized bed sewage treatment system, specifically, the microwave-permeable sewage pipe 5 and the conventional sewage pipe 8 have the same inner diameter _L1 . By adopting this structure, the sewage treatment system and the conventional sewage pipe can be connected through flanges to achieve sealing.

In the above magnetron built-in microwave enhanced multi-phase catalytic/adsorption fluidized bed sewage treatment system, specifically, the distance L between the #1 annular porous plate 2 and the #2 annular porous plate 6 is The sum of the length L ₄ of the sewage pipe inner core 4 and the length L ₃ of the magnetron front cover 7-1-1, the length L ₄ of the sewage pipe inner core 4 and the length L of the magnetron front cover 7-1-1 The ratio of ₃ is 3-6. The length L ₃ of the magnetron front cover 7-1-1 is equal to the length L ₂ of the magnetron rear cover 7-1-3. The magnetron front cover 7- 1-1 Length L ₃ is 10-15cm. By adopting this structure, the front cover of the magnetron can effectively protect the microwave energy output device and prevent vortex. The space enclosed by the front cover of the magnetron, the inner core of the sewage pipe and the microwave-permeable sewage pipe can simultaneously provide favorable conditions for the conduction of microwaves and the fluidization of the catalyst (or adsorbent). Preferably, the ratio of the inner core length L ₄ of the sewage pipe to the magnetron front cover L ₃ is 4.5, and the magnetron front cover length L ₃ is 13 cm.

In the above magnetron built-in microwave enhanced multi-phase catalytic/adsorption fluidized bed sewage treatment system, specifically, the ratio of the height L ₅ of the anti-vortex cone 3 to the outer diameter L ₆ of the bottom surface of the anti-vortex cone 3 is 1 -4. The diameter L ₆ of the bottom surface of the anti-vortex cone 3 is 2-4cm. By adopting this structure, after the sewage flows out of the sewage treatment system, the vortex can be effectively prevented from being generated at the end of the inner core of the sewage pipe close to the sewage outlet. Preferably, the ratio of the height L ₅ of the anti-vortex cone to the outer diameter L ₆ of the bottom surface of the anti-vortex cone is 2, and the diameter L ₆ of the bottom surface of the anti-vortex cone is 3 cm.

In the above-mentioned magnetron built-in microwave enhanced multi-phase catalytic/adsorption fluidized bed sewage treatment system, specifically, the opening diameter d of the #1 annular porous plate 2 and the #2 annular porous plate 6 are the same, and both are 1.5-2.5mm, the opening ratio is 90-95%, the #1 annular porous plate 2 and the #2 annular porous plate 6 have the same major diameter D, and are the same as the inner diameter L ₁ of the conventional sewage pipe 8, The small diameter D1 of the #1 annular porous plate ₂ is the same as the bottom diameter L6 of the anti-vortex cone 3, and the small diameter D2 of the #2 annular porous plate ₆ is the same as the bottom diameter _L6 of the magnetron front cover 7-1-1 Same as L ₇ . By adopting this structure, the two annular porous plates can form a closed space for the microwave and the catalyst (or adsorbent) at the same time, but at the same time it does not affect the flow of sewage. Preferably, the opening diameter d of the #1 annular porous plate and the #2 annular porous plate is 2 mm, and the opening rate is 92%. The major diameters of the #1 annular porous plate and the #2 annular porous plate are D is 18cm, the diameter _D1 of the #1 annular porous plate is 3cm, and the diameter _D2 of the #2 annular porous plate is 9.7cm.

In the above-mentioned magnetron built-in microwave enhanced multi-phase catalytic/adsorption fluidized bed sewage treatment system, specifically, microwaves can completely penetrate the microwave-permeable sewage pipe 5, the inner wall of the waveguide 1 and the permeable sewage pipe 5. The outer walls of the microwave sewage pipe 5 fit closely but are not adhered. By adopting this structure, microwaves can penetrate the microwave-transparent sewage pipe without any hindrance, directly reach the surface of the waveguide, and be reflected back into the sewage treatment system to continue radiating the sewage and catalyst (or adsorbent). If there is an adhesive between the inner wall of the waveguide and the outer wall of the microwave-permeable sewage pipe, the adhesive will absorb microwaves and affect the normal reflection of microwaves, ultimately leading to a decrease in the efficiency of the sewage treatment system.

In the above magnetron built-in microwave enhanced multi-phase catalytic/adsorption fluidized bed sewage treatment system, specifically, the magnetron cover 7-1 is resistant to sewage corrosion, and microwaves can completely penetrate the magnetron front cover. 7-1-1. The magnetron itself is not resistant to sewage corrosion and cannot work in sewage, so it needs a magnetron cover to protect it. The front cover of the magnetron has no absorption of microwaves, so that the microwaves generated by the microwave energy output device can be transmitted to the sewage and the surface of the catalyst (or adsorbent) without hindrance.

In the above-mentioned magnetron built-in microwave-enhanced multi-phase catalytic/adsorption fluidized bed sewage treatment system, specifically, the sewage pipe inner core 4 can completely reflect microwaves. By adopting this structure, the inner core of the sewage pipe will form an annular space with the inner wall of the waveguide. When microwaves propagate in this annular space, it is easy to form a more evenly distributed microwave field, which is conducive to improving the sewage treatment effect.

In the above-mentioned magnetron built-in microwave enhanced multi-phase catalytic/adsorption fluidized bed sewage treatment system, specifically, the magnetron upper holder A and the magnetron lower holder B are four identical ones. The cylindrical fixing rod, the magnetron upper holder A is installed in pairs on the bottom surface of the magnetron front cover 7-1-1, the central axis of each pair of holder is on a straight line, The straight lines of the two pairs of retainers are perpendicular to each other. The magnetron lower retainers B are installed in pairs on the bottom surface of the magnetron rear cover 7-1-3. The central axis of each pair of retainers On a straight line, the straight lines of the two pairs of fixators are perpendicular to each other. By adopting this structure, the magnetron upper holder and the magnetron lower holder will firmly fix the magnetron in the magnetron cover connector.

The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person familiar with the technical field can easily think of changes or modifications within the technical scope disclosed in the present invention. All substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (2)

1. A magnetron-built-in microwave-enhanced heterogeneous catalysis/adsorption fluidized bed sewage treatment system, which is characterized by including a waveguide, a #1 annular porous plate, an anti-vortex cone, a sewage pipe inner core, and a microwave-permeable sewage pipe , #2 annular porous plate, microwave generating unit, the microwave generating unit includes a magnetron cover and a magnetron, the magnetron cover includes a magnetron front cover, a magnetron cover connector, a magnetron rear Cover, magnetron upper holder and magnetron lower holder, both ends of the system are respectively connected to the sewage inlet and sewage outlet of the conventional sewage pipe through flanges; The waveguide, the anti-vortex cone, the inner core of the sewage pipe, the microwave-permeable sewage pipe, and the magnetron cover are all concentric rings in any cross section, and their geometric centers are on the same vertical line. superior; The inner diameter _L1 of the microwave-permeable sewage pipe is the same as that of the conventional sewage pipe; The distance L between the #1 annular porous plate and the #2 annular porous plate is the sum of the length L ₄ of the inner core of the sewage pipe and the length L ₃ of the front cover of the magnetron. The length L of the inner core of the sewage pipe L The ratio of ₄ to the length _L3 of the magnetron front cover is 3-6. The length _L3 of the front cover of the magnetron is equal to the length _L2 of the rear cover of the magnetron. The length of the front cover of the magnetron is L3. L ₃ is 10-15cm; The ratio of the height L ₅ of the anti-vortex cone to the outer diameter L ₆ of the bottom surface of the anti-vortex cone is 1-4, and the diameter L ₆ of the bottom surface of the anti-vortex cone is 2-4 cm; The #1 annular porous plate and the #2 annular porous plate have the same opening diameter d, which is 1.5-2.5mm, and the opening rate is 90-95%. The major diameter D of the annular porous plate is the same, which is the same as the inner diameter L ₁ of the conventional sewage pipe. The minor diameter D ₁ of the #1 annular porous plate is the same as the diameter L ₆ of the bottom surface of the anti-vortex cone. The minor diameter D of the #2 annular porous plate is the same. D ₂ is the same as the diameter L ₇ of the bottom surface of the magnetron front cover; The microwave-permeable sewage pipe is made of a material that can be completely penetrated by microwaves, and the inner wall of the waveguide and the outer wall of the microwave-permeable sewage pipe are closely adhered to each other but not bonded; The magnetron cover is made of materials that are resistant to sewage corrosion, and the magnetron front cover is made of materials that can be completely penetrated by microwaves; The inner core of the sewage pipe is made of completely reflective microwave material. 2. The magnetron-built-in microwave-enhanced multi-phase catalytic/adsorption fluidized bed sewage treatment system according to claim 1, characterized in that the magnetron upper holder and the magnetron lower holder are both They are four identical cylindrical fixing rods. The upper magnetron fixers are installed in pairs on the bottom surface of the magnetron front cover. The central axis of each pair of fixators is on a straight line, and the two upper fixators are installed on the bottom surface of the magnetron front cover. The straight lines where the fixtures are located are perpendicular to each other, and the magnetron lower fixtures are installed in pairs on the bottom surface of the magnetron rear cover. The central axis of each pair of fixtures is on a straight line, and the central axis of each pair of fixtures is on a straight line. The straight lines of the fixators are perpendicular to each other.