Catalytic oxidation-adsorption coupling purification device for hydrogen peroxide oxidation tail gas
The hydrogen peroxide oxidation tail gas catalytic oxidation-adsorption coupled purification device uses metal oxidants and multiple purification layers to perform multiple catalytic oxidation and adsorption treatments on the tail gas, solving the problem of incomplete tail gas treatment and achieving a highly efficient and safe tail gas purification effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSHAN HYDROGEN PEROXIDE CO LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-10
AI Technical Summary
Existing exhaust gas treatment equipment does not treat exhaust gas thoroughly enough, and residues may remain, affecting the safety and environmental efficiency of gas emissions.
The exhaust gas is purified by a hydrogen peroxide oxidation catalytic oxidation-adsorption coupled purification device, which includes a lower oxidation cylinder, a mixing cylinder and multiple purification layers. It uses metal oxidants, hydrogen peroxide and ozone for multiple catalytic oxidation and adsorption treatments, and performs multiple purifications of the exhaust gas through multiple purification layers.
It achieves complete purification of exhaust gas, improves the safety and environmental efficiency of gas emissions, and ensures the high efficiency and reliability of exhaust gas treatment.
Smart Images
Figure CN224100368U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to tail gas purification technical field, concretely relates to a hydrogen peroxide tail gas catalytic oxidation - adsorption coupling purification device. BACKGROUND
[0002] The utility model belongs to all kinds of nitrogen oxide low temperature, normal temperature tail gas treatment technical field, especially related to the denitration and recovery of dilute nitric acid of nitrogen oxide tail gas, specifically speaking, it is a device for treating nitrogen oxide tail gas by hydrogen peroxide and ozone coupling, which improves the efficiency and economy of nitrogen oxide removal by using the physical property difference between hydrogen peroxide and ozone.
[0003] In the prior art (announcement number CN214598104U) a kind of hydrogen peroxide-ozone coupling processing nitrogen oxide tail gas device specification book is mentioned "the device includes hydrogen peroxide denitration tower, ozone oxidation reactor and ozone absorption tower, the lower part of hydrogen peroxide denitration tower input nitrogen oxide tail gas, the top of hydrogen peroxide denitration tower is connected with the ozone oxidation reactor of input ozone by pipeline, ozone oxidation reactor is connected with the lower part of ozone absorption tower by pipeline, and ozone absorption tower is connected with hydrogen peroxide denitration tower by pipeline to transport dilute nitric acid containing ozone", but the tail gas treatment equipment in prior art is not sufficient and thorough to the treatment of tail gas, there may be residual, affect the safety of gas emission, not efficient, environmental protection and practical. UTILITY MODEL CONTENTS
[0004] To overcome the defects in the prior art, a hydrogen peroxide tail gas catalytic oxidation-adsorption coupling purification device is provided to solve the problem that the tail gas treatment equipment in the prior art is not sufficient and thorough to the treatment of tail gas, there may be residual, affect the safety of gas emission, not efficient, environmental protection and practical.
[0005] To achieve the above-mentioned purpose, a hydrogen peroxide tail gas catalytic oxidation-adsorption coupling purification device is provided, which includes a lower oxidation cylinder and a middle mixing cylinder. The inner side wall of the lower oxidation cylinder is provided with a metal oxidizing agent, and the outer ring surface of the lower oxidation cylinder is connected with a blowdown pipe at the lower rear part. A first inner gas conveying pipe is connected between the upper part of the lower oxidation cylinder and the middle mixing cylinder, and the upper end of the first inner gas conveying pipe is located in the lower part of the middle mixing cylinder. A filter screen is arranged in the upper part of the middle mixing cylinder, and a second motor is installed at the center of the upper end surface of the filter screen. A second inner gas conveying pipe is arranged between the upper part of the middle mixing cylinder and an upper purification cylinder, and a third inner gas conveying pipe is connected to the middle part of the second inner gas conveying pipe. The upper end of the third inner gas conveying pipe is connected to the lower part of the upper purification cylinder, and an upper exhaust pipe is connected to the upper end of the upper purification cylinder.
[0006] Further, the right upper corner of the lower oxidation cylinder is connected with a hydrogen peroxide input pipe, the lower left part of the lower oxidation cylinder is connected with a tail gas input pipe, and the upper end of the second inner gas conveying pipe is connected with a backflow pipe, and the lower end of the backflow pipe is connected to the middle part of the tail gas input pipe.
[0007] Further, the bottom of the lower oxidation cylinder is mounted with a first motor, the upper end of the first motor is mounted with a first rotating shaft, and the first rotating shaft is provided with a first stirring paddle, and the first rotating shaft and the first stirring paddle are located in the lower oxidation cylinder.
[0008] Further, the lower end of the second motor is mounted with a second rotating shaft, the left and right sides of the second rotating shaft are provided with second stirring paddles, the second rotating shaft and the second stirring paddles are located in the middle part of the middle mixing cylinder, and the right lower corner of the middle mixing cylinder is connected with an ozone input pipe.
[0009] Further, the first purification layer is made of polypropylene environmental protection ball material, the second purification layer is made of activated carbon adsorption layer, and the third purification layer is made of molecular sieve material.
[0010] Further, the metal oxidant is made of palladium metal material, an electromagnetic control valve is mounted on the pollution discharge pipe, and the lower parts of the first inner gas conveying pipe, the second inner gas conveying pipe and the upper exhaust pipe are mounted with air suction fans.
[0011] The beneficial effects of the utility model lie in:
[0012] 1. The utility model discloses a hydrogen peroxide input pipe is inputted to the lower oxidation cylinder, and the tail gas input pipe is transported to the lower oxidation cylinder, and under the double action of metal oxidant and hydrogen peroxide, most of the nitrogen oxides in the tail gas can be oxidized into dilute nitric acid, and after catalytic oxidation reaction, the remaining tail gas is transported to the middle mixing cylinder through the first inner gas conveying pipe.
[0013] 2. The utility model discloses that the remaining tail gas of conveying filtration and the ozone of conveying in the first inner gas conveying pipe and the ozone input pipe are mixed together, so that the remaining nitrogen oxides are oxidized into nitrogen pentoxide, and then after the preliminary filtration of filter screen, the remaining tail gas is retransported to the lower oxidation cylinder through the second inner gas conveying pipe and the first inner gas conveying pipe, and the tail gas treatment is safer and more reliable, and the gas after multiple replacement treatments is transported to the upper purification cylinder through the third inner gas conveying pipe.
[0014] 3. The utility model discloses that the first purification layer, the second purification layer and the third purification layer are used to carry out remaining gas adsorption and coupling purification treatment in turn, which helps to improve the tail gas treatment cleanliness, and the treated gas can be discharged through the upper exhaust pipe. DRAWINGS
[0015] Figure 1 is a front view schematic diagram of the embodiment of the utility model,
[0016] Figure 2 is a left view schematic diagram of the embodiment of the utility model,
[0017] Figure 3 is a top view schematic diagram of the embodiment of the utility model,
[0018] Figure 4 is a sectional view schematic diagram of the embodiment of the utility model.
[0019] In the drawing: 1, lower oxidation cylinder; 10, hydrogen peroxide input pipe; 11, metal oxidant; 12, first stirring paddle; 13, first rotating shaft; 14, blowdown pipe; 15, first motor; 16, tail gas input pipe; 17, first inner gas conveying pipe; 2, middle mixing cylinder; 20, second motor; 21, filter screen; 22, second rotating shaft; 23, second stirring paddle; 24, ozone input pipe; 25, second inner gas conveying pipe; 26, third inner gas conveying pipe; 27, reflux pipe; 3, upper purification cylinder; 30, first purification layer; 31, second purification layer; 32, third purification layer; 33, upper exhaust pipe. DETAILED DESCRIPTION
[0020] In order to make the technical problems, technical solutions and beneficial effects of the utility model to be solved clearer, the following will be further described in detail in combination with the drawings and embodiments. The specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. Specific details such as specific system structure, technology are proposed so as to understand the embodiment of the utility model more thoroughly. The described embodiments are part of the embodiments of the disclosure, not all the embodiments. However, those skilled in the art should clearly understand that the utility model can also be realized in other embodiments without these specific details. Based on the embodiments in the disclosure, all other embodiments obtained by those skilled in the art without making creative efforts are within the protection scope of the disclosure.
[0021] The specific embodiments of the utility model will be described in detail below in combination with the drawings.
[0022] Figure 1 is a front view schematic diagram of the embodiment of the utility model, Figure 2 is a left view schematic diagram of the embodiment of the utility model, Figure 3 is a top view schematic diagram of the embodiment of the utility model and Figure 4 is a sectional view schematic diagram of the embodiment of the utility model.
[0023] Refer to Figures 1 to 4The utility model provides a kind of hydrogen peroxide oxidation tail gas catalytic oxidation-adsorption coupling purification device, including lower oxidation cylinder 1 and middle mixing cylinder 2, the inside wall of lower oxidation cylinder 1 is provided with metal oxidant 11, and the outer ring surface rear lower part of lower oxidation cylinder 1 is connected with blowdown pipe 14, the upper part of lower oxidation cylinder 1 is connected with first inner gas pipe 17 between middle mixing cylinder 2, and the upper end of first inner gas pipe 17 is located in the lower part of middle mixing cylinder 2, the upper part in middle mixing cylinder 2 is provided with filter screen 21, and the upper end surface center of filter screen 21 is equipped with second motor 20, the upper part of middle mixing cylinder 2 is provided with second inner gas pipe 25 between upper purification cylinder 3, and the middle part of second inner gas pipe 25 is connected with third inner gas pipe 26, the upper end of third inner gas pipe 26 leads to the lower part in upper purification cylinder 3, and the upper end of upper purification cylinder 3 is connected with upper exhaust pipe 33.
[0024] In the embodiment, the upper right corner of lower oxidation cylinder 1 is connected with hydrogen peroxide input pipe 10, and the lower left part of lower oxidation cylinder 1 is connected with tail gas input pipe 16, and the upper end of second inner gas pipe 25 is connected with reflux pipe 27, and the lower end of reflux pipe 27 is connected to the middle part of tail gas input pipe 16;The bottom of lower oxidation cylinder 1 is equipped with first motor 15, and the upper end of first motor 15 is equipped with first rotating shaft 13, and first rotating shaft 13 is provided with first stirring paddle 12, and first rotating shaft 13 and first stirring paddle 12 are located in lower oxidation cylinder 1;Metal oxidant 11 adopts palladium metal material, and electromagnetic control valve is installed on blowdown pipe 14.
[0025] As a preferred embodiment, the utility model inputs hydrogen peroxide into lower oxidation cylinder 1 through hydrogen peroxide input pipe 10, transports waste gas into lower oxidation cylinder 1 through tail gas input pipe 16, and under the double action of metal oxidant 11 and hydrogen peroxide, most of nitrogen oxides in tail gas can be oxidized into dilute nitric acid, and after catalytic oxidation reaction, the remaining tail gas is transported into middle mixing cylinder 2 through first inner gas pipe 17.
[0026] In the embodiment, the lower end of second motor 20 is equipped with second rotating shaft 22, and the left and right sides of second rotating shaft 22 are both provided with second stirring paddle 23, and second rotating shaft 22 and second stirring paddle 23 are both located in the middle part of middle mixing cylinder 2, and the lower right corner of middle mixing cylinder 2 is connected with ozone input pipe 24.
[0027] As a preferred embodiment, the utility model mixes filtered remaining tail gas and ozone transported from ozone input pipe 24 together through first inner gas pipe 17, and then makes remaining nitrogen oxides oxidize into dinitrogen pentoxide, and then after preliminary filtration through filter screen 21, it is transported into lower oxidation cylinder 1 again through second inner gas pipe 25 and first inner gas pipe 17 for re-oxidation catalytic treatment, which is safer and more reliable for tail gas treatment, and the gas after multiple reprocessing is transported into upper purification cylinder 3 through third inner gas pipe 26.
[0028] In the embodiment, the first purification layer 30, the second purification layer 31 and the third purification layer 32 are sequentially arranged in the upper purification cylinder 3 from bottom to top, the first purification layer 30 is made of polypropylene environmental protection ball material, the second purification layer 31 is made of activated carbon adsorption layer, and the third purification layer 32 is made of molecular sieve material.
[0029] As a preferred embodiment, the remaining gas is adsorbed and coupled and purified by the first purification layer 30, the second purification layer 31 and the third purification layer 32 in sequence, which helps to improve the dryness of the tail gas treatment, is safer, more efficient and practical, and the treated gas can be discharged through the upper exhaust pipe 33.
[0030] The utility model can effectively solve the problem that the tail gas treatment equipment in the prior art does not treat the tail gas sufficiently and completely, which may exist residual, affects the safety of gas emission, and is not efficient, environmental protection and practical, the utility model utilizes hydrogen peroxide and metal catalyst to catalyze and oxidize the tail gas first, can absorb most of the nitrogen oxides in the tail gas and oxidize into dilute nitric acid, the gas after catalytic reaction is conveyed into the ozone gas reaction space, makes the remaining nitrogen oxides oxidize into dinitrogen pentoxide, and then carries out multiple adsorption and purification treatment on the remaining gas, which helps to ensure the safety and reliability of the discharged gas, is more efficient and practical.
[0031] The above embodiment is used to explain and illustrate the utility model, rather than limit the utility model, and any modification and change made to the utility model within the spirit and the application protection right claim range of the utility model should be included in the protection range of the utility model.
Claims
1. A hydrogen peroxide oxidation tail gas catalytic oxidation-adsorption coupled purification device, characterized in that: It includes lower oxidation cylinder (1) and middle mixing cylinder (2), the inner side wall of lower oxidation cylinder (1) is provided with metal oxidant (11), and the outer ring surface rear side lower part of lower oxidation cylinder (1) is connected with blowdown pipe (14), the upper part between lower oxidation cylinder (1) and middle mixing cylinder (2) is connected with first inner gas pipe (17), and the upper end of first inner gas pipe (17) is located in the lower part of middle mixing cylinder (2), the upper part in middle mixing cylinder (2) is provided with filter screen (21), and the upper end surface center of filter screen (21) is installed with second motor (20), the upper part between middle mixing cylinder (2) and upper purification cylinder (3) is provided with second inner gas pipe (25), and the middle part of second inner gas pipe (25) is connected with third inner gas pipe (26), the upper end of third inner gas pipe (26) leads to the lower part in upper purification cylinder (3), and the upper end of upper purification cylinder (3) is connected with upper exhaust pipe (33).
2. The catalytic oxidation-adsorption coupled purification device for hydrogen peroxide oxidation tail gas according to claim 1, characterized in that, The upper right corner of lower oxidation cylinder (1) is connected with hydrogen peroxide input pipe (10), the lower left part of lower oxidation cylinder (1) is connected with tail gas input pipe (16), and the upper end of second inner gas pipe (25) is connected with backflow pipe (27), and the lower end of backflow pipe (27) is connected in the middle part of tail gas input pipe (16). 3.The device according to claim 1, wherein, The bottom of lower oxidation cylinder (1) is installed with first motor (15), the upper end of first motor (15) is installed with first rotating shaft (13), and first rotating shaft (13) is provided with first stirring paddle (12), and first rotating shaft (13) and first stirring paddle (12) are located in lower oxidation cylinder (1).
4. The device according to claim 1, wherein, The lower end of second motor (20) is installed with second rotating shaft (22), the left and right sides of second rotating shaft (22) are provided with second stirring paddle (23), and second rotating shaft (22) and second stirring paddle (23) are located in the middle part of middle mixing cylinder (2), and the right lower corner of middle mixing cylinder (2) is connected with ozone input pipe (24).
5. The device according to claim 1, wherein, First purification layer (30), second purification layer (31) and third purification layer (32) are sequentially installed in upper purification cylinder (3) from bottom to top, first purification layer (30) is made of polypropylene environmental protection ball material, second purification layer (31) is made of activated carbon adsorption layer, and third purification layer (32) is made of molecular sieve material.
6. The device according to claim 1, wherein, Metal oxidant (11) is made of palladium metal material, electromagnetic control valve is installed on blowdown pipe (14), and suction fan is installed on the lower part of first inner gas pipe (17), second inner gas pipe (25) and upper exhaust pipe (33).