Catalytic oxidation spiral rib type gas dissolving device

Abstract

The utility model relates to a catalytic oxidation spiral rib type air dissolving device which comprises a central pipe, an air dissolving cavity is arranged on the periphery of the central pipe, an air inlet cavity is sleeved outside the air dissolving cavity, and an air inlet is connected above the air inlet cavity; a plurality of spiral ribs are arranged on the outer side wall of the central pipe, a plurality of air inlet holes penetrate through the side wall of the central pipe, a plurality of spiral riflings are formed in the inner side wall of the air dissolving cavity, a plurality of air inlet holes penetrate through the side wall of the air dissolving cavity, liquid generates rotational flow in the flowing process, and gas injected through micro holes in multiple directions is subjected to multi-dimensional cutting, stirring and mixing; gas is quickly dissolved into liquid, mixing is sufficient, and the pressure requirements of the water inlet end and the gas inlet end are low.

Description

Technical Field

[0001] The utility model relates to the technical field of dissolved gas, in particular to a catalytic oxidation spiral rib type dissolved gas device. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] In chemical and environmental protection projects, various types of gas-liquid miscible reaction equipment are often needed. Miscible equipment is mainly used for mixing gas with compatible liquid. In the chemical or environmental protection field, it is often necessary to quickly mix slightly soluble gas with liquid medium to achieve the purpose of gas-liquid miscibility.

[0004] The inventor discovered the following technical problems:

[0005] A wide variety of gases need to be dissolved in water or other liquids for the next application. For example, in the catalytic oxidation process of ozone on liquid, in order to improve the efficiency and speed of gas dissolution, it is necessary to spray ozone and liquid into the mixing chamber through a booster device to achieve the purpose of gas dissolution. The greater the power of the booster pump, the better the mixing effect of ozone and liquid spraying. However, in order to obtain higher pressure, the energy consumption cost generated by the booster device increases. Utility Model Content

[0006] The utility model aims to provide a catalytic oxidation spiral rib type gas dissolving device, which can at least solve one of the above technical problems.

[0007] To achieve the above purpose, the utility model proposes a catalytic oxidation spiral rib type gas dissolving device, comprising a central tube, a gas dissolving cavity is arranged on the periphery of the central tube, an air inlet cavity is arranged outside the gas dissolving cavity, and an air inlet is connected to the top of the air inlet cavity;

[0008] A plurality of spiral ribs are arranged on the outer side wall of the central tube, and a plurality of air inlet holes are passed through the side wall of the central tube.

[0009] It is further configured that a water inlet is provided at one end of the gas dissolving cavity, and a water outlet is provided at the other end of the gas dissolving cavity.

[0010] It is further configured that the center tube is connected to a center air hole above.

[0011] It is further configured that the end of the central air hole passes through the mounting hole opened in the gas dissolving cavity, and the axis of the central tube coincides with the axis of the air inlet.

[0012] It is further configured that the diameter of the central air hole is larger than the air inlet hole.

[0013] It is further configured that the axis of the air inlet is perpendicular to the axis of the central tube.

[0014] It is further configured that a distance is provided between the gas dissolving cavity and the central tube.

[0015] It is further configured that a distance is provided between the air dissolving cavity and the air inlet cavity.

[0016] It is further configured that a plurality of air inlet holes are evenly distributed along the circumference of the air dissolving cavity.

[0017] It is further configured that connecting flanges are respectively provided on the water inlet, the water outlet and the air inlet.

[0018] Beneficial effects of one or more of the above technical solutions:

[0019] A central tube is arranged in the gas dissolving cavity through which the water flows, and the spiral ribs on the central tube are used to make the water (liquid) produce swirl in the flow, so as to cut, stir and mix the gas injected through the tiny holes in multiple directions in multiple dimensions, so that the gas can be quickly dissolved into the liquid. Only a low pressure of 1 bar is required to ensure the flow of liquid and gas, and the pressure at the water inlet and air inlet ends is low, which greatly reduces the energy consumption cost generated by the operation of the booster device, while ensuring the full mixing of gas and liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation on the present application.

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2 It is a cross-sectional view of the utility model.

[0023] Figure 3 It is a structural schematic diagram of the central tube of the utility model.

[0024] Figure 4 The utility model is a schematic diagram of the structure of a sewage ozone catalytic oxidation treatment system.

[0025] In the figure, 1 is a central tube; 2 is a gas dissolving cavity; 3 is an air inlet cavity; 4 is an air inlet; 5 is a spiral rib; 6 is an air inlet hole; 7 is a flange bolt;

[0026] 8 water inlet; 9 water outlet; 10 center air hole; 11 connecting flange; 12 mounting hole;

[0027] 13 oxygen inlet; 14 sewage inlet; 15 ozone generator; 16 catalytic reactor; 17 first flow controller; 18 first one-way valve; 19 second flow controller; 20 second one-way valve; 21 discharge port; 22 booster pump. DETAILED DESCRIPTION

[0028] The specific implementation of this embodiment is described below in conjunction with the accompanying drawings.

[0029] Reference Figure 1 and Figure 2 A catalytic oxidation spiral rib type gas dissolving device comprises a central tube 1, a gas dissolving cavity 2 is arranged on the periphery of the central tube 1, an air inlet cavity 3 is arranged outside the gas dissolving cavity 2, and an air inlet 4 is connected to the upper part of the air inlet cavity 3;

[0030] A plurality of spiral ribs 5 are arranged on the outer wall of the central tube 1; a plurality of air inlet holes 6 are passed through the side wall of the central tube 1. In the device, the liquid flows through the spiral ribs 5 on the central tube 1, so that the water (liquid) generates a vortex in the flow, and the gas injected through the tiny holes in multiple directions is cut, stirred and mixed in multiple dimensions, so that the gas is quickly dissolved into the liquid.

[0031] Reference Figure 1 A water inlet 8 is provided at one end of the gas dissolving cavity 2, and a water outlet 9 is provided at the other end of the gas dissolving cavity 2. Liquid flows in from the water inlet 8, mixes with gas in the gas dissolving cavity 2, and then flows out from the water outlet 9.

[0032] Reference Figure 2 The spiral direction of the spiral rib 5 is arranged along the axial direction of the central tube 1. The cross section of the spiral rib 5 can be selected to be semicircular or rectangular. In this embodiment, a semicircular shape is selected.

[0033] Reference Figure 3 The center tube 1 is connected to the center air hole 10 at the top, and the end of the center air hole 10 passes through the mounting hole 12 opened in the gas dissolving cavity 2. The outer wall of the center tube 1 is welded to the inner wall of the mounting hole 12. The axis of the center tube 1 coincides with the axis of the air inlet 4. The diameter of the center air hole 10 is larger than the air inlet 6. By setting multiple air holes in the center tube 1 and the gas dissolving cavity 2, the tube wall of the gas dissolving device can be bidirectionally inlet, the air intake is more uniform, and the dissolution speed is faster. The air intake hole is 0.2-1mm, preferably 0.5mm.

[0034] Reference Figure 2 , 3 The axis of the air inlet 4 is perpendicular to the axis of the central tube 1. The setting of the air inlet 4 ensures that the gas can be filled into the central tube 1 through the central air hole 10, so that a part of the gas directly flows into the gas dissolving cavity 2 through the small-diameter air hole on the side wall of the gas dissolving cavity 2. The gas flowing into the side wall of the gas dissolving cavity 2 flows from top to bottom, and a part of the gas flows into the central tube 1 through the large-diameter central air hole 10, and then flows into the gas dissolving cavity 2 through the large-diameter air hole on the side wall of the central tube 1. The gas flowing into the side wall of the central tube 1 flows from bottom to top, so that the liquid flows from the inlet and forms a vortex under the action of the ribs on the side wall of the central tube 1. At the same time, the airflows from the upper and lower directions of the water flow are cut by the spiral water flow and fully mixed.

[0035] In order to ensure the flow of gas, a distance is set between the gas dissolving chamber and the central tube 1. In order to ensure the flow of gas, a distance is set between the gas dissolving chamber and the air inlet chamber, so that the gas can flow in multiple directions, ensuring that the gas can flow evenly in the gas dissolving chamber, ensuring that the liquid can cut, stir and mix the gas in multiple dimensions, so that the gas can quickly dissolve into the liquid, and the pressure requirement is low.

[0036] A plurality of air inlet holes are evenly distributed along the circumference of the gas dissolving cavity.

[0037] Reference Figure 1 The water inlet 8, the water outlet 9 and the air inlet 4 are respectively provided with connecting flanges 11, which are connected to other access pipes through the connecting flanges 11.

[0038] The mixing process of gas and liquid is:

[0039] The air inlet 4 is filled into the central tube 1 through the central air hole 10. A part of the gas flows directly into the gas dissolving cavity 2 through the small diameter air inlet hole 6 on the side wall of the gas dissolving cavity 2. A part of the gas flows into the central tube 1 through the large diameter central air hole 10, and then flows into the gas dissolving cavity 2 through the small diameter air inlet hole 6 on the side wall of the central tube 1. The gas flowing into the side wall of the central tube 1 is from bottom to top, so that after the liquid flows in from the water inlet 8, it first forms a spiral water flow under the guidance of the spiral rifling 7 on the side wall of the gas dissolving cavity 2, and then increases the spiral degree under the action of the ribs on the side wall of the central tube 1. At the same time, the airflows from the upper and lower directions of the water flow are cut by the spiral water flow, so that the gas and liquid are fully mixed under the influence of the mechanical mechanism. Only 1 bar of water inlet pressure and air inlet pressure are required to complete the full mixing of gas and liquid at low pressure.

[0040] The catalytic oxidation process is:

[0041] Oxygen enters the ozone generator 15 through the oxygen inlet 13, and the gas containing high concentration of ozone generated by the ozone generator 15 is pressurized by the booster pump 22 arranged at the rear of the ozone generator 15. The booster pump 2 only needs to provide an intake pressure of 1 bar. The pressurized gas enters the intake cavity 2 in the gas-liquid mixing device provided in this embodiment through the first flow controller 17 and the first one-way valve 18. At the same time, sewage flows through the booster pump 22 from the sewage inlet 14. The booster pump 22 only needs a low pressure of 1 bar to ensure the flow of liquid, and then flows through the second flow controller 19 and the second one-way valve 20 into the dissolved gas cavity;

[0042] The first flow controller 17 and the second flow controller 19 adopt existing flow controllers to play the role of gas and liquid flow, and the first one-way valve 18 and the second one-way valve 20 adopt existing one-way valve bodies;

[0043] After ozone and sewage are mixed in the gas-liquid mixing device, they enter the catalytic reactor 16. The mixed sewage flows through the fixed packing layer in the catalytic reactor 16. In the process of flowing through the packing layer, the ozone is catalyzed to produce free radicals with strong oxidizing properties. The free radicals oxidize and degrade organic pollutants in the sewage. After being treated, the sewage flows out from the discharge port 21.

[0044] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A catalytic oxidation spiral rib type gas dissolving device, characterized in that: It comprises a central tube, a gas dissolving cavity is arranged on the periphery of the central tube, an air inlet cavity is arranged outside the gas dissolving cavity, and the air inlet is connected to the top of the air inlet cavity; a water inlet is arranged at one end of the gas dissolving cavity, and a water outlet is arranged at the other end of the gas dissolving cavity; The outer wall of the central tube is provided with a plurality of spiral ribs, the side wall of the central tube passes through a plurality of air inlet holes, the top of the central tube is connected to the central air hole; the end of the central air hole passes through the mounting hole opened in the gas dissolving cavity, and the axis of the central tube coincides with the axis of the air inlet.

2. The catalytic oxidation spiral rib type gas dissolving device according to claim 1, characterized in that: The diameter of the central air hole is larger than the air inlet hole.

3. The catalytic oxidation spiral rib type gas dissolving device according to claim 1, characterized in that: The air inlet axis is perpendicular to the central tube axis.

4. The catalytic oxidation spiral rib type gas dissolving device according to claim 1, characterized in that: A distance is arranged between the gas dissolving cavity and the central tube.

5. The catalytic oxidation spiral rib type gas dissolving device according to claim 1, characterized in that: A distance is arranged between the air dissolving cavity and the air inlet cavity.

6. The catalytic oxidation spiral rib type gas dissolving device according to claim 1, characterized in that: A plurality of air inlet holes are evenly distributed along the circumference of the central tube.

7. The catalytic oxidation spiral rib type gas dissolving device according to claim 1, characterized in that: The water inlet, the water outlet and the air inlet are respectively provided with connecting flanges.

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