Catalytic ozonation device with detachable reaction tube

Abstract

The utility model provides a catalytic ozonation device with a detachable reaction tube, which belongs to the technical field of water pollution control and treatment and is characterized in that a device main body is connected with the detachable reaction tube through a flange and can also be connected with other adaptive reaction devices through flanges, so that the reaction tube can be reused. The detachable reaction tube in the device is slender, so that the catalytic oxidation efficiency can be improved by increasing the height-diameter ratio of the reaction device, prolonging the ozone retention time and enlarging the volume of a high-efficiency reaction area, and the ozone mass transfer capacity and solubility can be improved by increasing the hydrostatic pressure, thereby enhancing the ozone catalytic oxidation treatment. The device is improved on the basis of an existing catalytic ozonation reaction device, the manufacturing cost of the reaction device and the ozone consumption cost are further reduced while the catalytic ozonation treatment efficiency is improved, and the device has a relatively good application prospect in the catalytic ozonation advanced treatment of industrial wastewater.

Description

Technical Field

[0001] This utility model relates to the field of water pollution control and treatment technology, specifically, to an ozone catalytic oxidation device with a detachable reaction tube. Background Technology

[0002] Ozone catalytic oxidation offers excellent treatment effects and rapid reaction, and is often used for advanced industrial wastewater treatment. However, due to the easy dissipation of ozone, ozone catalytic oxidation often suffers from low ozone utilization and high consumption in actual operation, leading to unnecessary cost expenditures. Therefore, improving ozone utilization and treatment efficiency has become crucial for cost reduction and efficiency improvement in engineering projects.

[0003] Studies have shown that the height-to-diameter ratio of an ozone catalytic oxidation reactor significantly affects catalytic efficiency. A larger height-to-diameter ratio results in a longer residence time of ozone in the reactor, leading to higher ozone utilization. During the ozone catalytic oxidation reaction, the bottom of the reactor is the high-efficiency reaction zone; increasing the height-to-diameter ratio effectively expands the volume of this zone, thereby improving the ozone catalytic oxidation treatment efficiency. Furthermore, according to the hydrostatic pressure formula P=ρgh, a greater effective water depth h results in a greater hydrostatic pressure P in the wastewater. Related research indicates that higher water pressure leads to higher ozone solubility, more efficient mass transfer in water, and thus improved ozone utilization. Therefore, increasing the height-to-diameter ratio of the reactor effectively improves ozone utilization and catalytic oxidation efficiency.

[0004] However, in actual production and transportation, an excessively tall reaction device can cause certain problems. Ozone reactors are generally made of ozone-resistant steel, resulting in higher manufacturing costs. While a taller reactor increases processing efficiency, it also leads to higher production costs. Furthermore, due to road transport limitations, an excessively large height-to-diameter ratio can also cause transportation inconvenience.

[0005] To address this technical problem, this invention proposes an ozone catalytic oxidation device with a detachable reaction tube. Adding the reaction tube effectively increases the device's height-to-diameter ratio, promoting a highly efficient ozone catalytic oxidation reaction. For the same length, the reaction tube is thinner than the main body of the device, resulting in lower manufacturing costs. Furthermore, the detachable design of the reaction tube, connected to the main body via a flange, ensures the device's airtightness and allows for the reuse of the reaction tube, further reducing manufacturing costs. Utility Model Content

[0006] In order to overcome the existing technical problems, the purpose of this utility model is to provide an ozone catalytic oxidation device with a detachable reaction tube. By using this device for ozone catalytic oxidation treatment, the purpose of improving treatment efficiency and reducing treatment cost can be achieved simultaneously.

[0007] This utility model provides an ozone catalytic oxidation device with a detachable reaction tube. The device is connected to the reaction tube (1) via a flange (2), ensuring airtightness during installation and allowing for disassembly as needed, enabling the reuse of the reaction tube (1) and reducing the manufacturing cost of the reaction device. Simultaneously, adding the reaction tube (1) effectively increases the device's height-to-diameter ratio, expands the volume of the high-efficiency reaction zone, and enhances the mass transfer efficiency and solubility of ozone, thereby improving the treatment efficiency and ozone utilization rate of the ozone catalytic oxidation reaction and reducing the treatment operating cost.

[0008] This utility model provides an ozone catalytic oxidation device with a detachable reaction tube. The reaction tube (1) is long and slender, which effectively increases the height-to-diameter ratio of the reaction device, improves the ozone catalytic oxidation treatment efficiency, and saves on the manufacturing cost of the reaction device. The upper end of the reaction tube (1) has a trumpet-shaped opening to prevent overflow when the reaction tube (1) is too narrow and the water volume changes significantly; the lower end of the reaction tube (1) is also trumpet-shaped to facilitate the entry of wastewater containing ozone and free radicals into the reaction tube (1) for reaction.

[0009] This utility model provides an ozone catalytic oxidation device with a detachable reaction tube, characterized in that the reaction tube (1) is provided with a flushing drain (13), a water outlet (14), a tail gas discharge outlet (15), a two-way breathing valve (16) and a gas washing exhaust outlet (17), which can be used for gas washing drainage, reaction water discharge, ozone tail gas discharge, balancing the internal and external pressure of the device and gas washing exhaust.

[0010] This utility model provides an ozone catalytic oxidation device with a detachable reaction tube. The device is characterized by having a stainless steel mesh (4), a multi-layer filter material (5), and a support layer (6) from top to bottom to ensure the filling and normal use of the catalyst (3). The device is also equipped with a discharge port (12) to facilitate the loading, unloading, and replenishment of the catalyst (3).

[0011] This utility model provides an ozone catalytic oxidation device with a detachable reaction tube. The device is characterized by having an aeration head (7), a water inlet (8), an ozone air inlet (10), and a gas washing air inlet (11), which are respectively used for ozone microporous aeration, wastewater inlet, ozone air inlet, and gas washing air inlet.

[0012] Based on the above, the advantages of this utility model in providing an ozone catalytic oxidation device with a detachable reaction tube are as follows:

[0013] 1. By increasing the height-to-diameter ratio of the ozone catalytic oxidation device, expanding the volume of the high-efficiency reaction zone, and increasing the hydrostatic pressure, the ozone residence time can be extended, ensuring efficient mass transfer of ozone and increasing ozone solubility, thereby achieving the goal of improving the efficiency of ozone catalytic oxidation reaction and ozone utilization.

[0014] 2. While improving the efficiency of ozone catalytic oxidation treatment, the slender reaction tube has a lower manufacturing cost compared to traditional reaction devices. The detachable design allows for the reuse of the reaction tube, greatly reducing the manufacturing cost of the ozone catalytic oxidation device.

[0015] 3. Both ends of the reaction tube have funnel-shaped openings. The upper end prevents overflow when the water volume changes significantly, while the lower end facilitates the entry of wastewater containing ozone and free radicals into the reaction tube, thereby extending the ozone residence time and improving ozone utilization. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the device of this utility model.

[0017] Among them, the reaction tube (1), flange (2), catalyst (3), stainless steel mesh (4), multi-layer filter media (5), support layer (6), aeration head (7), water inlet (8), spare port (9), ozone inlet (10), gas washing inlet (11), unloading port (12), flushing drain (13), water outlet (14), tail gas discharge port (15), two-way breathing valve (16), and gas washing exhaust port (17). Detailed Implementation

[0018] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] Example 1

[0020] Applications such as Figure 1 The ozone catalytic oxidation device with a detachable reaction tube shown is used for deep ozone catalytic oxidation treatment of coking wastewater. The specific reaction process is as follows: the coking wastewater is introduced into the reaction device through the inlet (8) and reacts directly with some ozone introduced through the aeration head (7). At the same time, the gas and water pass through the support layer (6), multi-layer filter media (5), and stainless steel mesh (4) in sequence and come into contact with the catalyst (3). The unreacted ozone generates hydroxyl radicals and other components with stronger oxidizing power under the catalytic action of the catalyst (3), which react more thoroughly and rapidly with the organic matter in the coking wastewater. At this time, the wastewater, together with the unreacted hydroxyl radicals and ozone, continues to flow upward and preferentially enters the reaction tube (1) through the lower funnel of the reaction tube (1) to continue the reaction. The coking wastewater after the reaction is discharged from the device through the outlet (14), and the residual ozone is introduced into the tail gas treatment system through the tail gas discharge port (15).

[0021] The reaction tube (1) effectively improves the reaction efficiency and ozone utilization rate of ozone catalytic oxidation by increasing the height-to-diameter ratio of the device and expanding the volume of the high-efficiency reaction zone at the bottom. At the same time, the water column in the reaction tube (1) increases the hydrostatic pressure in the device, improves the solubility and mass transfer efficiency of ozone in the device, and further improves the ozone utilization rate and treatment efficiency.

[0022] Since the reaction tube (1) is a detachable component, it can be disassembled and assembled with other compatible device bodies. When the water quality, quantity and conditions change, only the part below the flange (2) needs to be customized. The reaction tube (1) can be recycled multiple times and connected to a new reaction device through the flange (2) for reuse, reducing the cost of the project. The upper and lower ends of the reaction tube (1) are both horn-shaped openings. The upper horn shape prevents overflow when the water volume changes significantly, and the lower horn shape facilitates the entry of wastewater containing ozone and free radicals into the reaction tube (1) for reaction, prolonging the ozone residence time and improving the utilization rate of ozone.

[0023] Applications such as Figure 1 The specific reaction process of an ozone catalytic oxidation device with a detachable reaction tube during gas washing is as follows: backwash water is introduced into the reaction device through the water inlet (8) and is washed together with the air introduced through the gas washing inlet (11) to flush out particulate pollutants on the surface of the reaction device and catalyst (3). The washing wastewater and washing gas are discharged from the device through the washing drain outlet (13) and the gas washing exhaust outlet (17), respectively.

[0024] When it is necessary to add or replace the catalyst (3) during actual operation, open the discharge port (12) on the device to disassemble, fill or add the catalyst (3).

[0025] The above describes typical embodiments of the present invention. However, the present invention is not limited to the use of the above embodiments, and various modifications or changes can be made within the scope of the claims. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An ozone catalytic oxidation device with a detachable reaction tube, characterized in that, The ozone catalytic oxidation device with a detachable reaction tube includes a reaction tube (1), a flange (2), a catalyst (3), a stainless steel mesh (4), a multi-layer filter media (5), a support layer (6), an aeration head (7), a water inlet (8), a spare port (9), an ozone air inlet (10), a gas washing air inlet (11), a discharge port (12), a flushing drain port (13), a water outlet (14), a tail gas discharge port (15), a two-way breathing valve (16), and a gas washing exhaust port (17). The reaction tube (1) is connected to the device through the flange (2). The reaction tube (1) is long and thin, with flared openings at both the upper and lower ends.

2. The ozone catalytic oxidation device with a detachable reaction tube according to claim 1, characterized in that, The reaction tube (1) is equipped with a flushing drain (13), a water outlet (14), a tail gas discharge outlet (15), a two-way breathing valve (16), and a gas washing exhaust outlet (17), which can be used for gas washing drainage, reaction water discharge, ozone tail gas discharge, balancing the internal and external pressure of the device, and gas washing exhaust.

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