Hydrogen peroxide hydrogenation tail gas treatment device

Abstract

The invention relates to the technical field of tail gas treatment, in particular to a hydrogen peroxide hydrogenation tail gas treatment device which comprises a buffer tank, the buffer tank is of a cylindrical structure design, the top of the buffer tank is in threaded connection with a top cover, the bottom of the buffer tank is in threaded connection with a bottom cover, and a sealing ring is connected between the bottom cover and the buffer tank in a glued mode; the middle of the lower end face of the bottom cover communicates with an air inlet pipe, and a buffer assembly is arranged at the joint of the air inlet pipe and the bottom cover. And the upper end face of the top cover communicates with and is fixedly provided with an exhaust pipe, and a flow guide system of a spiral structure is arranged in the buffer tank. The spiral flow guide layer is designed to be matched with the spiral cooling fins, the contact time of tail gas and cooling water can be further prolonged, circulating cooling treatment is conducted on the cooling water used for a long time, and the use efficiency of the device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tail gas treatment, and in particular to a device for treating hydrogen peroxide hydrogenation tail gas. Background Art

[0002] Hydrogen peroxide, with the chemical formula H2O2, is a light blue viscous liquid in its pure form. It can be miscible with water in any proportion and is a strong oxidizing agent. Its aqueous solution is commonly known as hydrogen peroxide water, which is a colorless and transparent liquid. Its aqueous solution is suitable for medical wound disinfection, environmental disinfection, and food disinfection.

[0003] The production methods of hydrogen peroxide include: inorganic reaction method, electrolysis method, isopropyl alcohol oxidation method, anthraquinone method, direct synthesis method of hydrogen and oxygen, cathode and anode reduction method, vacuum enrichment method, etc. Among them, the anthraquinone method is the mainstream method for producing industrial hydrogen peroxide. More than 99% of the global industrial hydrogen peroxide is produced by the anthraquinone method. All hydrogen peroxide plants with a production capacity of more than 10,000 tons built and under construction in China adopt the anthraquinone method;

[0004] The utility model with the publication number CN209630658U specifically discloses a device for treating hydrogen peroxide hydrogenation tail gas. A hydrogen storage tank is connected through a purity detection pipeline, an analytical gas buffer tank is connected to a compressor, the compressor is connected to a heating furnace, and the hydrogen storage tank is connected to a hydrogenation reactor. The present invention solves the technical problem that the existing tail gas treatment only condenses and collects the tail gas and then discharges the remaining gas into the atmosphere, which not only pollutes the environment but also causes energy waste;

[0005] In this device, the tail gas buffer tank is an important equipment for tail gas treatment. Before the tail gas is treated, it needs to pass through the tail gas buffer tank to balance the pressure of the tail gas. Since the temperature of the tail gas is relatively high, if it is directly introduced into the tail gas buffer tank, it is easy to damage the buffer tank and reduce the service life of the buffer tank. Summary of the Invention

[0006] The purpose of the present invention is to provide a device for treating hydrogen peroxide hydrogenation tail gas. By designing a spiral guide layer and spiral heat dissipation fins, the present application can further increase the contact time between the tail gas and the cooling water, and perform circulating cooling treatment on the cooling water used for a long time, improving the use efficiency of the device to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A device for treating hydrogen peroxide hydrogenation tail gas, including a buffer tank. The buffer tank is designed in a cylindrical tubular structure, and the top of the buffer tank is screwed with a top cover. The bottom of the buffer tank is screwed with a bottom cover, and a sealing ring is adhesively bonded between the bottom cover and the buffer tank;

[0008] The middle part of the lower end face of the bottom cover is communicated with an air inlet pipe, and a buffer assembly is arranged at the connection between the air inlet pipe and the bottom cover;

[0009] An exhaust pipe is fixedly connected and communicated with the upper end surface of the top cover, and a spiral structure diversion system is arranged inside the buffer tank.

[0010] Preferably, spiral heat dissipation fins are spirally distributed outside the buffer tank, and a second channel is opened inside the spiral heat dissipation fins. Both ends of the spiral heat dissipation fins are connected to an external water pump device through pipes.

[0011] Preferably, the diversion system includes spiral diversion fins. The upper half of the spiral diversion fins is a spiral filter layer, and the lower half is a spiral diversion layer. The spiral filter layer is attached to and movably connected to the inside of the buffer tank, and the spiral diversion layer is fixed to the inner wall of the buffer tank.

[0012] Preferably, cooling water is provided inside the buffer tank, and the height of the cooling water is at the top of the spiral diversion layer.

[0013] Preferably, the spiral diversion plate at the spiral diversion layer is designed with a hollow structure and is internally provided with activated carbon for tail gas purification treatment.

[0014] Preferably, a spiral channel for the tail gas to pass through is arranged inside the spiral diversion layer of the spiral diversion plate, and a first channel communicating with the second channel is opened inside the spiral diversion plate at the spiral diversion layer. The first channel and the second channel are internally provided with heat conduction liquid.

[0015] Preferably, the buffer assembly includes a pipe fixed to the bottom cover, and an inner cylinder is movably connected to the upper side inside the pipe. A buffer cover is fixed to the top of the inner cylinder. The buffer cover is designed with a conical structure, and its longitudinal section is designed with an isosceles trapezoid structure. Spray holes are equidistantly opened on the outer surface of the inner cylinder.

[0016] Preferably, buffer sheets are annularly and equidistantly distributed and fixed on the inner wall of the buffer cover, and the buffer sheets are designed with an arc structure. A spring is arranged below the buffer cover, and the spring is sleeved outside the pipe. The top of the spring is fixed to the buffer cover, and the lower end is fixed to the bottom cover.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. In this application, by designing the buffer assembly, the tail gas entering the buffer tank can be further buffer-treated. The spiral filter layer in the buffer tank is made of elastic metal material, and its spiral structure can further buffer the gas.

[0019] 2. In this application, by designing the spiral diversion layer in cooperation with the spiral heat dissipation fins, the contact time between the tail gas and the cooling water can be further increased, and the cooling water used for a long time can be circulated and cooled, improving the use efficiency of the device. Description of the Drawings

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 is the overall structure view of the present invention;

[0022] Figure 2 is the partial sectional view of the overall structure of the present invention;

[0023] Figure 3 is of the present invention Figure 2 front view;

[0024] Figure 4 is the structure view of the spiral guide plate of the present invention;

[0025] Figure 5 is the structure view of the buffer assembly of the present invention;

[0026] Figure 6 is the structure view of the buffer cover and the flow retarder of the present invention;

[0027] Figure 7 is the structure view of the spiral guide layer and the spiral heat sink of the present invention.

[0028] Explanation of reference numerals:

[0029] 1. Buffer tank; 2. Top cover; 3. Exhaust pipe; 4. Intake pipe; 5. Spiral heat sink; 6. Spiral guide plate; 7. Spiral filter layer; 8. Spiral guide layer; 9. Bottom cover; 10. Pipe; 11. Buffer cover; 12. Inner cylinder; 13. Air injection hole; 14. Spring; 15. Flow retarder; 16. Channel 1; 17. Channel 2. Specific embodiments

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0031] Please refer to Figures 1 to 7 , the present invention provides a technical solution:

[0032] A hydrogen peroxide hydrogenation tail gas treatment device, including a buffer tank, the buffer tank is designed in a cylindrical tubular structure, and the top of the buffer tank is screwed with a top cover 2, the bottom of the buffer tank is screwed with a bottom cover 9, and a sealing ring is glued between the bottom cover 9 and the buffer tank;

[0033] In the middle of the lower end face of the bottom cover 9, an air inlet pipe 4 is connected and communicated, and a buffer assembly is arranged at the connection of the air inlet pipe 4 and the bottom cover 9;

[0034] The upper end face of the top cover 2 is fixedly connected with an exhaust pipe 3, and a spiral structure diversion system is arranged inside the buffer tank.

[0035] The outside of the buffer tank is spirally distributed with spiral heat dissipation fins 5, and a channel two 17 is opened inside the spiral heat dissipation fins 5. The two ends of the spiral heat dissipation fins 5 are connected with an external water pump device through a pipe 10.

[0036] Specifically, the diversion system includes spiral diversion vanes. The upper half of the spiral diversion vanes is a spiral filter layer 7, and the lower half is a spiral diversion layer 8. The spiral filter layer 7 is attached to and movably connected with the inside of the buffer tank, and the spiral diversion layer 8 is fixed to the inner wall of the buffer tank. Cooling water is arranged inside the buffer tank, and the height of the cooling water is at the top of the spiral diversion layer 8. The spiral diversion plate 6 at the spiral diversion layer 8 is designed in a hollow structure and is internally provided with activated carbon for tail gas purification treatment.

[0037] Specifically, the spiral diversion layer 8 inside the spiral diversion plate 6 of the spiral diversion layer 8 is provided with a spiral channel for the tail gas to pass through, and a channel one 16 communicating with the channel two 17 is opened inside the spiral diversion plate 6 of the spiral diversion layer 8. Heat conduction liquid is arranged inside the channel one 16 and the channel two 17.

[0038] Specifically, the buffer assembly includes a pipe 10 fixed to the bottom cover 9. An inner cylinder 12 is movably connected to the upper side inside the pipe 10. A buffer cover 11 is fixed to the top of the inner cylinder 12. The buffer cover 11 is designed in a conical structure, and the longitudinal section is designed in an isosceles trapezoid structure. Spray holes 13 are equidistantly opened on the outer surface of the inner cylinder 12. Buffer sheets are annularly and equidistantly distributed and fixed on the inner wall of the buffer cover 11, and the buffer sheets are designed in an arc structure. A spring 14 is arranged below the buffer cover 11, and the spring 14 is sleeved outside the pipe 10. The top of the spring 14 is fixed to the buffer cover 11, and the lower end is fixed to the bottom cover 9.

[0039] Working principle: During operation, the intake pipe 4 is connected to the tail gas supply device through the pipeline 10. The tail gas enters the buffer tank through the intake pipe 4. After entering the intake pipe 4, the tail gas enters the interior of the pipeline 10 and then impacts the inner cylinder 12 and the top cover 2 inside the pipeline 10 upward. At this time, the spring 14 buffers the impact force of the tail gas, and the inner cylinder 12 moves upward under the impact of the tail gas. The tail gas is sprayed into the buffer cover 11 through the air injection holes 13, and then slowly flows into the cooling water in the buffer tank through the flow buffer fins 15 with an arc-shaped structure to contact the cooling water, achieving the cooling of the tail gas. The tail gas needs to pass through the spiral channel between the spiral guide plates 6 and then gradually rise upward until it separates from the cooling water. During this process, the cooling water fully contacts the tail gas to achieve the cooling operation of the tail gas. Then the tail gas rises after separating from the cooling water and contacts the spiral filter layer 7, contacting the activated carbon inside it to achieve the filtration treatment of the tail gas, and finally is discharged to the outside through the exhaust pipe 3.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features. And these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydrogen peroxide hydrogenation tail gas treatment device, comprising a buffer tank (1), characterized in that: The buffer tank (1) is designed to be cylindrical in structure, and the top of the buffer tank (1) is screwed to a top cover (2), the bottom of the buffer tank (1) is screwed to a bottom cover (9), and a sealing ring is glued between the bottom cover (9) and the buffer tank (1); An air intake pipe (4) is provided in communication with the middle portion of the lower end surface of the bottom cover (9), and a buffer assembly is provided at the connection between the air intake pipe (4) and the bottom cover (9); The upper end surface of the top cover (2) is connected and fixedly connected to an exhaust pipe (3), and a flow guide system with a spiral structure is provided inside the buffer tank (1).

2. A hydrogen peroxide hydrogenation tail gas treatment device according to claim 1, characterized in that: The buffer tank (1) is provided with spiral fins (5) distributed in a spiral pattern on the outside, and a second channel (17) is provided inside the spiral fins (5). Both ends of the spiral fins (5) are connected to external water pump equipment via pipes (10).

3. A hydrogen peroxide hydrogenation tail gas treatment device according to claim 2, characterized in that: The guide system comprises a spiral guide plate, the upper part of which is a spiral filter layer (7), and the lower part of which is a spiral guide layer (8), the spiral filter layer (7) is attached to and movably connected to the inside of the buffer tank (1), and the spiral guide layer (8) is fixed to the inner wall of the buffer tank (1).

4. A hydrogen peroxide hydrogenation tail gas treatment device according to claim 3, characterized in that: The buffer tank (1) is provided with cooling water inside, and the height of the cooling water is located at the top of the spiral guide layer (8).

5. A hydrogen peroxide hydrogenation tail gas treatment device according to claim 4, characterized in that: The spiral guide plate (6) at the spiral guide layer (8) is designed as a hollow structure and contains activated carbon for exhaust gas purification.

6. A hydrogen peroxide hydrogenation tail gas treatment device according to claim 5, characterized in that: The spiral guide layer (8) in the spiral guide plate (6) is provided with a spiral channel for exhaust gas to pass through, and a channel one (16) connected to a channel two (17) is provided in the spiral guide plate (6) at the spiral guide layer (8), and heat transfer fluid is contained in the channel one (16) and the channel two (17).

7. A hydrogen peroxide hydrogenation tail gas treatment device according to claim 6, characterized in that: The buffer assembly comprises a pipe (10) fixed to a bottom cover (9), and an inner tube (12) is movably connected to the inner upper side of the pipe (10), a buffer cover (11) is fixed to the top of the inner tube (12), the buffer cover (11) is designed in a conical structure, and the longitudinal cross section is designed in an isosceles trapezoidal structure, and the outer surface of the inner tube (12) is provided with air injection holes (13) at equal distances.

8. A hydrogen peroxide hydrogenation tail gas treatment device according to claim 7, characterized in that: The inner wall of the buffer cover (11) is annularly and equidistantly fixed with buffer sheets, and the buffer sheets are designed to be arc-shaped. A spring (14) is provided on the lower side of the buffer cover (11), and the spring (14) is sleeved on the outside of the pipe (10). The top of the spring (14) is fixed to the buffer cover (11), and the lower end is fixed to the bottom cover (9).

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