Oxidized tail gas treatment device for hydrogen peroxide production

Abstract

The invention discloses an oxidized tail gas treatment device for hydrogen peroxide production. The oxidized tail gas treatment device comprises a flange plate, a safety valve, a connecting hose, a steam pipe, a pressure gauge, a controller, a filter cartridge and a wide-mouth converter, a fixing groove is formed in the outer surface of one side of the flange plate, an air inlet pipe is arranged on the outer surface of the other side of the flange plate, a safety valve is arranged on the air inlet pipe, the output end of the safety valve is fixedly connected with a pressure discharging pipe, and a connecting hose is arranged at one end of the pressure discharging pipe. According to the device, a modular design is adopted, and the device realizes deep purification of organic pollutants and improvement of operation and maintenance efficiency through an integrated structure of the metal filter cartridge with the drawable and detachable air inlet and the pressure gauge cartridge safety valve and integration of the two-stage activated carbon purification chamber and the side face drawing type filter module; and the tail gas is pre-filtered, so that mechanical impurities such as dust and liquid drops can be efficiently intercepted, and the impurities are prevented from blocking an airflow channel of a subsequent purification unit.

Description

Technical Field

[0001] The present invention relates to the technical field of treatment devices, and in particular to an oxidation tail gas treatment device for hydrogen peroxide production. Background Art

[0002] Hydrogen peroxide is widely used in many fields. If the oxidation tail gas generated during its production is directly discharged, it will pollute the environment. The tail gas contains pollutants such as aromatic hydrocarbons. Aromatic hydrocarbons are highly volatile and belong to the benzene class, which are very harmful to the environment. Therefore, they must be treated and recycled. This not only meets environmental protection requirements but also reduces production costs. However, the existing oxidation tail gas treatment device for hydrogen peroxide production still has many shortcomings. First, the air inlet pretreatment capacity is weak and the pressure safety control is insufficient. The air inlet of the existing device lacks an effective pretreatment component. The dust particles and liquid impurities in the tail gas directly enter the purification system and gradually deposit in the flow channel of the air purification chamber and the thermal reaction chamber, causing the fluid resistance of the system to increase by more than half after half a year of operation. The steam pipeline relies solely on a pressure gauge to monitor the air pressure. When the exhaust gas composition suddenly changes or the power system is abnormal, the air pressure in the device may exceed the safety threshold. Secondly, the purification level is single and the maintenance operation is cumbersome. The existing device uses a single-stage adsorption structure to treat exhaust gas, and the removal rate of organic matter such as benzene series and heavy aromatics is insufficient. When treating exhaust gas with TOC concentration exceeding a certain range, the emission index often exceeds the environmental protection standard of 50 mg per cubic meter. Especially under high temperature conditions in summer, single-stage adsorption penetration occurs frequently, resulting in insufficient quarterly environmental protection test pass rate. In addition, the filter component adopts a fixed installation. When replaced, the flange and the main structure need to be disassembled, and a single maintenance requires a long downtime. In addition, frequent disassembly aggravates the wear of the flange sealing surface. Summary of the Invention

[0003] The purpose of the present invention is to provide an oxidation tail gas treatment device for hydrogen peroxide production to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: an oxidation tail gas treatment device for hydrogen peroxide production, comprising a flange, a fixing groove is provided on the outer surface of one side of the flange, an air intake pipe is provided on the outer surface of the other side of the flange, a safety valve is provided on the air intake pipe, the output end of the safety valve is fixedly connected to a pressure discharge pipe, one end of the pressure discharge pipe is provided with a connecting hose, a controller and a steam pipe are provided on the outer wall of the air intake pipe, the end of the steam pipe is fixedly connected to a pressure gauge, and a base is provided on the bottom outer surface of the air intake pipe.

[0005] As a further technical solution of the present invention, a fixed inner tube is provided in the air intake pipe, a filter cartridge is sleeved in the fixed inner tube, a first handle is provided on one outer surface of the filter cartridge, and a fixed seat is provided on one outer surface of the air intake pipe.

[0006] As a further technical solution of the present invention, a temperature sensor is provided on the fixing seat, a temperature measuring hose is sleeved on the temperature sensor, and a probe is provided at one end of the temperature measuring hose.

[0007] As a further technical solution of the present invention, a front heat reaction chamber is provided on the outer wall of one end of the intake pipe, a first-level purification chamber is provided on the outer wall of one end of the front heat reaction chamber, a first conical pin and a second conical pin are provided on the first-level purification chamber, a first-level fixture is sleeved on the first-level purification chamber, a first positioning hole and a second positioning hole are provided on the outer wall of one side of the first-level fixture, and the first conical pin and the second conical pin are respectively sleeved in the first positioning hole and the second positioning hole, a first-level activated carbon is provided in the first-level fixture, and a second handle is provided on the outer surface of one side of the first-level fixture.

[0008] As a further technical solution of the present invention, a measuring chamber is provided on one outer surface of the primary purification chamber, a through hole is opened in the measuring chamber, and a probe is sleeved in the through hole.

[0009] As a further technical solution of the present invention, a secondary purification chamber is provided on the outer surface of one side of the measuring chamber, a secondary fixture is sleeved in the secondary purification chamber, and secondary activated carbon is provided in the secondary fixture.

[0010] As a further technical solution of the present invention, a catalytic converter is provided on one side outer wall of the secondary purification chamber, one side outer surface of the catalytic converter is fixedly connected to a post-heat reaction chamber, and a wide-mouth converter is fixedly connected to one end outer wall of the post-heat reaction chamber.

[0011] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention adopts a modular design, and the device realizes deep purification of organic pollutants and improved operation and maintenance efficiency through the integrated structure of the metal filter cartridge and the pressure gauge cartridge safety valve that can be pulled out and removed at the air inlet, as well as the integration of the two-stage activated carbon purification chamber and the side pull-out filter module. The device integrates a drawer-type metal filter cartridge at the air inlet end to pre-filter the exhaust gas, which can effectively intercept mechanical impurities such as dust and droplets, avoid impurities from clogging the air flow channel of the subsequent purification unit, and maintain the stability of the system fluid resistance. The filter cartridge adopts a pull-out quick-release design, which can be regularly cleaned or replaced without disassembling the main structure, ensuring the continuous and stable pretreatment efficiency. The pressure relief safety valve forms a closed-loop control with the high-precision pressure gauge. When the system When the air pressure exceeds the rated threshold, the safety valve automatically opens to release the pressure, which can control the pressure within a safe range, avoiding damage to the equipment structure or seal failure due to a sudden increase in air pressure, and ensuring the operation safety of the device under complex working conditions. The device is equipped with two-stage activated carbon purification units in series, using high-performance activated carbon with different pore size distributions to construct a gradient adsorption system. The first-level purification chamber preferentially adsorbs large molecular organic pollutants, and the second-level purification chamber deeply removes small molecules, so that the total organic carbon removal rate in the exhaust gas is increased to more than 90%. The emission indicators meet strict environmental protection requirements. The activated carbon filter module adopts a horizontal pull-out modular structure, which can be quickly loaded and unloaded by snap-in. One person can complete the module replacement in a short time, avoiding the downtime loss caused by traditional disassembly methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0014] Figure 2 It is a rear perspective structural diagram of the present invention;

[0015] Figure 3 Schematic diagram of the three-dimensional structure of the filter cartridge of the present invention;

[0016] Figure 4 Schematic diagram of the three-dimensional structure of the temperature sensor of the present invention;

[0017] Figure 5 Schematic diagram of the three-dimensional structure of the measuring chamber of the present invention;

[0018] Figure 6 It is a schematic diagram of the three-dimensional structure of the primary purification structure of the present invention;

[0019] Figure 7 Schematic diagram of the three-dimensional structure of the first-level clean room of the present invention;

[0020] Figure 8 It is a schematic diagram of the three-dimensional structure of the purification filter element of the present invention.

[0021] In the figure: 1. Flange; 2. Fixing groove; 3. Inlet pipe; 4. Safety valve; 5. Pressure relief pipe; 6. Connecting hose; 7. Steam pipe; 8. Pressure gauge; 9. Controller; 10. Filter cartridge; 11. First handle; 12. Fixed inner tube; 13. Base; 14. Fixing seat; 15. Temperature sensor; 16. Temperature measuring hose; 17. Probe; 18. Front thermal reaction chamber; 19. Primary purification chamber; 20. First conical pin; 21. Second conical pin; 22. Primary fixture; 23. First positioning hole; 24. Second positioning hole; 25. Primary activated carbon; 26. Second handle; 27. Measuring chamber; 28. Through hole; 29. ​​Secondary purification chamber; 30. Secondary fixture; 31. Secondary activated carbon; 32. Catalytic converter; 33. Post-heat reaction chamber; 34. Wide-mouth converter. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0023] Please see the attached Figure 1 -Attached Figure 8, an embodiment provided by the present invention: an oxidation tail gas treatment device for hydrogen peroxide production, comprising a flange 1, a fixing groove 2 is provided on the outer surface of one side of the flange 1, an air intake pipe 3 is provided on the outer surface of the other side of the flange 1, a safety valve 4 is provided on the air intake pipe 3, an output end of the safety valve 4 is fixedly connected to a pressure discharge pipe 5, one end of the pressure discharge pipe 5 is provided with a connecting hose 6, a controller 9 and a steam pipe 7 are provided on the outer wall of the air intake pipe 3, a pressure gauge 8 is fixedly connected to the end of the steam pipe 7, a base 13 is provided on the outer surface of the bottom of the air intake pipe 3; a fixed inner pipe 12 is provided in the air intake pipe 3, a filter cartridge 10 is sleeved in the fixed inner pipe 12, a first handle 11 is provided on the outer surface of one side of the filter cartridge 10, and the air intake pipe A fixing seat 14 is provided on the outer surface of one side of 3. The filter cartridge 10 efficiently intercepts mechanical impurities such as dust particles and liquid droplets in the exhaust gas through a metal mesh structure to prevent them from clogging the internal flow channels of the air purification chamber, the thermal reaction chamber, etc., and avoids the increase of fluid resistance and the attenuation of equipment efficiency caused by the deposition of impurities; a temperature sensor 15 is provided on the fixing seat 14, and a temperature measuring hose 16 is sleeved on the temperature sensor 15. A probe 17 is provided at one end of the temperature measuring hose 16 to monitor the exhaust gas temperature in real time to ensure the optimal catalytic temperature range; a front thermal reaction chamber 18 is provided on the outer wall of one end of the intake pipe 3, and a first purification chamber 19 is provided on the outer wall of one end of the front thermal reaction chamber 18. The first purification chamber 19 is provided with a first tapered pin 20 and a second A conical pin 21 is provided, and a primary fixture 22 is sleeved on the primary purification chamber 19. A first positioning hole 23 and a second positioning hole 24 are provided on one side outer wall of the primary fixture 22, and the first conical pin 20 and the second conical pin 21 are sleeved in the first positioning hole 23 and the second positioning hole 24 respectively. A primary activated carbon 25 is provided in the primary fixture 22, and a second handle 26 is provided on one side outer surface of the primary fixture 22, so that the filtering structure can be detachable. The card-type detachable structure is adopted, and the activated carbon can be replaced without disassembling the main device; a measuring chamber 27 is provided on one side outer surface of the primary purification chamber 19, and a through hole 28 is provided on the measuring chamber 27. A probe 17 is sleeved in the through hole 28, and the probe 17 Real-time detection of abnormal temperature fluctuations; a secondary purification chamber 29 is provided on the outer surface of one side of the measuring chamber 27, a secondary holder 30 is sleeved in the secondary purification chamber 29, and a secondary activated carbon 31 is provided in the secondary holder 30. The high specific surface area and porous structure of the activated carbon are utilized to efficiently adsorb pollutants such as aromatic hydrocarbons and volatile organic compounds remaining in the exhaust gas; a catalytic converter 32 is provided on the outer wall of one side of the secondary purification chamber 29, and a post-heat reaction chamber 33 is fixedly connected to the outer surface of one side of the catalytic converter 32, and a wide-mouth converter 34 is fixedly connected to the outer wall of one end of the post-heat reaction chamber 33. The wide-mouth converter 34 has a structure that changes from wide to narrow, which reduces the exhaust emission flow rate and avoids a sudden increase in pressure in the post-heat reaction chamber 33 due to excessive flow rate.

[0024] Working principle: When using the present invention, first, the safety valve 4 is set on the air inlet pipe 3, the pressure relief pipe 5 is fixedly connected to the output end of the safety valve 4, and the connecting hose 6 is set on one end of the pressure relief pipe 5. A fixing groove 2 is opened on the outer surface of one side of the flange 1, and a controller 9 and a steam pipe 7 are set on the outer wall of the air inlet pipe 3. The end of the steam pipe 7 is fixedly connected to a pressure gauge 8. A base 13 is set on the outer surface of the bottom of the air inlet pipe 3. A fixed inner pipe 12 is set in the air inlet pipe 3, and a filter cartridge 10 is sleeved in the fixed inner pipe 12. The outer surface of one side of the filter cartridge 10 is A first handle 11 is provided on the upper surface of the air inlet pipe 3, a fixing seat 14 is provided on the outer surface of one side of the air inlet pipe 3, a temperature sensor 15 is provided on the fixing seat 14, a temperature measuring hose 16 is sleeved on the temperature sensor 15, a probe 17 is provided at one end of the temperature measuring hose 16, a front thermal reaction chamber 18 is provided on the outer wall of one end of the air inlet pipe 3, a first purification chamber 19 is provided on the outer wall of one end of the front thermal reaction chamber 18, a first conical pin 20 and a second conical pin 21 are provided on the first purification chamber 19, a first fixer 22 is sleeved on the first purification chamber 19, and a first fixer 22 is provided on the first purification chamber 19. A first positioning hole 23 and a second positioning hole 24 are provided on the outer wall of one side of the fixer 22, and the first tapered pin 20 and the second tapered pin 21 are respectively sleeved in the first positioning hole 23 and the second positioning hole 24. A first-level activated carbon 25 is provided in the first-level fixer 22, and a second handle 26 is provided on the outer surface of one side of the first-level fixer 22. A measuring chamber 27 is provided on the outer surface of one side of the first purification chamber 19, and a through hole 28 is provided on the measuring chamber 27. A probe 17 is sleeved in the through hole 28, and a secondary purification is provided on the outer surface of one side of the measuring chamber 27. Chamber 29, a secondary holder 30 is sleeved in the secondary purification chamber 29, and a secondary activated carbon 31 is arranged in the secondary holder 30. The exhaust gas enters from the air inlet, is pretreated by the filter cartridge 10, and passes through the front thermal reaction chamber 18 for thermal reaction in turn, and then enters the first purification chamber 19 for preliminary purification, and then enters the secondary purification chamber 29 for secondary purification, and then enters the rear thermal reaction chamber 33. The catalytic converter 32 catalytically converts the harmful gas, and the two-stage activated carbon purification chamber deeply adsorbs organic pollutants. The wide-mouth converter 34 adjusts the airflow and is discharged from the exhaust port.

[0025] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0026] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A device for treating oxidation tail gas for hydrogen peroxide production, comprising a flange (1), characterized in that: A fixing groove (2) is provided on the outer surface of one side of the flange (1), an air inlet pipe (3) is provided on the outer surface of the other side of the flange (1), a safety valve (4) is provided on the air inlet pipe (3), an output end of the safety valve (4) is fixedly connected to a pressure relief pipe (5), one end of the pressure relief pipe (5) is provided with a connecting hose (6), a controller (9) and a steam pipe (7) are provided on the outer wall of the air inlet pipe (3), a pressure gauge (8) is fixedly connected to the end of the steam pipe (7), and a base (13) is provided on the outer surface of the bottom of the air inlet pipe (3).

2. The oxidized tail gas treatment device for hydrogen peroxide production according to claim 1, characterized in that: A fixed inner tube (12) is provided in the air intake pipe (3), a filter cartridge (10) is sleeved in the fixed inner tube (12), a first handle (11) is provided on one outer surface of the filter cartridge (10), and a fixed seat (14) is provided on one outer surface of the air intake pipe (3).

3. The oxidized tail gas treatment device for hydrogen peroxide production according to claim 2, characterized in that: The fixing seat (14) is provided with a temperature sensor (15), a temperature measuring hose (16) is sleeved on the temperature sensor (15), and a probe (17) is provided at one end of the temperature measuring hose (16).

4. The oxidized tail gas treatment device for hydrogen peroxide production according to claim 2, characterized in that: A front heat reaction chamber (18) is provided on the outer wall of one end of the air inlet pipe (3), a first-level purification chamber (19) is provided on the outer wall of one end of the front heat reaction chamber (18), a first conical pin (20) and a second conical pin (21) are provided on the first-level purification chamber (19), a first-level fixer (22) is sleeved on the first-level purification chamber (19), a first positioning hole (23) and a second positioning hole (24) are provided on the outer wall of one side of the first-level fixer (22), and the first conical pin (20) and the second conical pin (21) are sleeved in the first positioning hole (23) and the second positioning hole (24) respectively, a first-level activated carbon (25) is provided in the first-level fixer (22), and a second handle (26) is provided on the outer surface of one side of the first-level fixer (22).

5. The oxidized tail gas treatment device for hydrogen peroxide production according to claim 4, characterized in that: A measuring chamber (27) is provided on one outer surface of the primary purification chamber (19), a through hole (28) is provided on the measuring chamber (27), and a probe (17) is sleeved in the through hole (28).

6. The oxidized tail gas treatment device for hydrogen peroxide production according to claim 5, characterized in that: A secondary purification chamber (29) is provided on an outer surface of one side of the measuring chamber (27), a secondary fixture (30) is sleeved in the secondary purification chamber (29), and secondary activated carbon (31) is provided in the secondary fixture (30).

7. The oxidized tail gas treatment device for hydrogen peroxide production according to claim 6, characterized in that: A catalytic converter (32) is provided on one side outer wall of the secondary purification chamber (29), a post-heat reaction chamber (33) is fixedly connected to one side outer surface of the catalytic converter (32), and a wide-mouth converter (34) is fixedly connected to one end outer wall of the post-heat reaction chamber (33).

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