Catalytic oxidation gas-liquid mixing device

Abstract

The utility model relates to a catalytic oxidation gas-liquid mixing device which comprises a gas dissolving cavity, a gas inlet cavity is sleeved outside the gas dissolving cavity, and the upper part of the gas inlet cavity is connected with a gas inlet; a plurality of spiral riflings are formed in the inner side wall of the gas dissolving cavity, a plurality of gas inlet holes penetrate through the side wall of the gas dissolving cavity, liquid generates rotational flow under the action of the spiral riflings, and gas injected through micro holes in multiple directions is subjected to multi-dimensional cutting, stirring and mixing, so that the gas is quickly dissolved into the liquid and is fully mixed.

Description

Technical Field

[0001] The utility model relates to the technical field of dissolved gas, in particular to a catalytic oxidation gas-liquid mixing 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 the chemical or environmental protection industries, it is often necessary to quickly mix slightly soluble gases with liquid media to achieve the purpose of gas-liquid miscibility. In the field of water treatment, ozone and liquid are often mixed. Ozone is mainly used to oxidize and decompose difficult-to-degrade organic matter in water, thereby decolorizing and deodorizing the water and reducing toxicity.

[0004] The inventor discovered the following technical problems:

[0005] In the prior art, ozone is often pressurized and sprayed into water. The raw water flows in one direction, and the mixing efficiency of ozone and raw water is poor, which slows down the reaction rate of organic matter in the water and ozone, greatly reducing the effect of ozone dissolving into liquid. Utility Model Content

[0006] The utility model aims to provide a catalytic oxidation gas-liquid mixing device, which can at least solve one of the above technical problems.

[0007] To achieve the above-mentioned purpose, the utility model proposes a catalytic oxidation gas-liquid mixing device, comprising a gas dissolving cavity, an air inlet cavity is sleeved outside the gas dissolving cavity, and an air inlet is connected to the top of the air inlet cavity;

[0008] The inner side wall of the gas dissolving cavity is provided with a plurality of spiral riflings, and the inner side wall of the gas dissolving cavity penetrates a plurality of gas inlet holes.

[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 points of the water inlet and the water outlet are arranged on the same straight line.

[0011] It is further configured that the gas dissolving cavity is a hollow circular cylinder.

[0012] It is further configured that the central axes of the gas dissolving cavities coincide with each other.

[0013] It is further configured that a plurality of air inlet holes are provided along the circumferential direction of the air dissolving cavity.

[0014] It is further configured that the air inlet holes are evenly arranged on the side wall of the air dissolving cavity.

[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 the cross-section of the rifling is semicircular.

[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] The mixer tube wall is provided with spiral rifling to generate swirl in the water (liquid) flow, and the gas injected through the tiny holes in multiple directions is cut, stirred and mixed in multiple dimensions, so that the gas can be quickly dissolved into the liquid and mixed fully. In the high-efficiency dissolved gas mixer, ozone and raw water are efficiently mixed, which increases the specific surface area and reaction rate, improves the effect of ozone and liquid dissolution, and makes the sewage and ozone fully react with the active components in the special catalyst under high-speed and high-efficiency mixing state. 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 gas dissolving cavity of the utility model.

[0024] Figure 4 In the schematic diagram of the structure of the utility model applied to the sewage ozone catalytic oxidation treatment system, 1 is a dissolved air cavity; 2 is an air inlet cavity; 3 is an air inlet; 4 is an air inlet hole; 5 is a spiral rifling; 6 is a water inlet; 7 is a water outlet; 8 is a connecting flange; 9 is an oxygen inlet; 10 is a sewage inlet; 11 is an ozone generator; 12 is a catalytic reactor; 13 is a first flow controller; 14 is a first one-way valve; 15 is a second flow controller; 16 is a second one-way valve; 17 is a discharge port; and 18 is a booster pump. DETAILED DESCRIPTION

[0025] The specific implementation of this embodiment is described below in conjunction with the accompanying drawings.

[0026] Reference Figure 1 and Figure 2 A catalytic oxidation gas-liquid mixing device comprises a gas dissolving cavity 1, an air inlet cavity 2 is sleeved outside the gas dissolving cavity 1, and an air inlet 3 is connected to the top of the air inlet cavity 2;

[0027] A plurality of spiral riflings 5 ​​are provided on the inner wall of the gas dissolving chamber 1, and a plurality of gas inlet holes 4 are penetrated through the side wall of the gas dissolving chamber 1. The gas inlet holes are 0.2-1 mm, preferably 0.5 mm. The device arranges spiral riflings 5 ​​on the tube wall of the gas dissolving chamber 1 for mixing gas and liquid, so that water (liquid) generates vortex in the flow, and performs multi-dimensional cutting, stirring and mixing of gas injected through the tiny holes in multiple directions, so that the gas is quickly dissolved into the liquid.

[0028] A water inlet 6 is provided at one end of the gas dissolving cavity 1 , and a water outlet 7 is provided at the other end of the gas dissolving cavity 1 . Liquid flows in from the water inlet 6 , mixes with gas in the gas dissolving cavity 1 , and then flows out from the water outlet 7 .

[0029] Reference Figure 3 The air dissolving cavity 1 is a hollow circular cylinder, the air inlet cavity 2 coincides with the central axis of the air dissolving cavity 1, the lateral length of the air inlet cavity 2 is smaller than the lateral length of the air dissolving cavity 1, the air inlet cavity 2 only covers the area where the air inlet holes exist, and the air inlet cavity 2 is welded to the outer wall of the air dissolving cavity 1.

[0030] Several air inlet holes 4 are arranged along the circumferential direction of the dissolved air cavity 1, and the air inlet holes 4 are evenly opened on the side wall of the dissolved air cavity 1. The arrangement of the air inlet port 3 ensures that the gas can be filled into the air inlet cavity 2, so that the gas is directly sprayed into the dissolved air cavity 1 through the small-diameter air holes on the side wall of the dissolved air cavity 1. The gas flowing into the side wall of the dissolved air cavity 1 is evenly dissolved in the water flowing through the dissolved air cavity 1 along the circular outer wall of the cavity, and first forms a spiral water flow under the guidance of the spiral rifling 5 on the side wall of the dissolved air cavity 1. The spiral water flow cuts the airflow from multiple directions, so that the liquid and the gas are fully mixed.

[0031] In order to ensure the flow of gas, a distance is set between the gas dissolving chamber 1 and the gas inlet chamber 2 to allow gas to circulate and ensure that the gas can flow into the gas dissolving chamber evenly. 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.

[0032] The cross-sectional shape of the rifling can be selected from semicircular, rectangular, trapezoidal, triangular, etc., and the number of the rifling is 1 or more, preferably 3.

[0033] The water inlet 6 , the water outlet 7 and the air inlet 3 are respectively provided with connecting flanges 8 , which are connected to other access pipes via the connecting flanges 8 .

[0034] The mixing process of gas and liquid is:

[0035] After the liquid flows in from the water inlet 6, it first passes through the spiral rifling 5 on the side wall of the gas dissolving chamber 1 to form a spiral water flow, and at the same time is cut by the airflow from both the upper and lower directions of the water flow, so that the gas and liquid are fully mixed under the influence of the mechanical mechanism.

[0036] The catalytic oxidation process is:

[0037] Reference Figure 4 , oxygen enters the ozone generator 11 through the oxygen inlet 9, and the gas containing high concentration of ozone generated by the ozone generator 11 flows into the first flow controller 13 and the first one-way valve 14 through the booster pump 18 arranged at the rear and enters the air inlet cavity 2 in the gas-liquid mixing device provided in this embodiment, while the sewage flows from the sewage inlet 10 through the booster pump 18, and then flows through the second flow controller 15 and the second one-way valve 16 into the gas dissolving cavity 1;

[0038] The first flow controller 13 and the second flow controller 15 adopt existing flow controllers to play the role of gas and liquid flow, and the first one-way valve 14 and the second one-way valve 16 adopt existing one-way valve bodies;

[0039] After ozone and sewage are mixed in the gas-liquid mixing device, they enter the reactor 12. The mixed sewage flows through the fixed packing layer in the reactor. 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 17.

[0040] 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 gas-liquid mixing device, characterized in that: It comprises a gas dissolving cavity, an air inlet cavity is sleeved outside the gas dissolving cavity, and the upper part of the air inlet cavity is connected to the air inlet; The inner side wall of the gas dissolving cavity is provided with a plurality of spiral riflings, and the inner side wall of the gas dissolving cavity penetrates a plurality of gas inlet holes.

2. The catalytic oxidation gas-liquid mixing device according to claim 1, characterized in that: A water inlet is arranged at one end of the air dissolving cavity, and a water outlet is arranged at the other end of the air dissolving cavity.

3. The catalytic oxidation gas-liquid mixing device according to claim 2, characterized in that: The center points of the water inlet and the water outlet are arranged on the same straight line.

4. The catalytic oxidation gas-liquid mixing device according to claim 1, characterized in that: The gas dissolving cavity is a hollow circular cylinder.

5. The catalytic oxidation gas-liquid mixing device according to claim 1, characterized in that: The central axes of the gas dissolving cavity and the gas inlet cavity coincide with each other.

6. The catalytic oxidation gas-liquid mixing device according to claim 1, characterized in that: A plurality of air inlet holes are arranged along the circumferential direction of the air dissolving cavity.

7. The catalytic oxidation gas-liquid mixing device according to claim 1, characterized in that: The air inlet holes are evenly arranged on the side wall of the air dissolving cavity.

8. The catalytic oxidation gas-liquid mixing device according to claim 1, characterized in that: A distance is arranged between the air dissolving cavity and the air inlet cavity.

9. The catalytic oxidation gas-liquid mixing device according to claim 1, characterized in that: The cross-sectional shape of the rifling is semicircular.

10. The catalytic oxidation gas-liquid mixing device according to claim 1 or 2, characterized in that: The water inlet, the water outlet and the air inlet are respectively provided with connecting flanges.

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