Environment-friendly waste gas treatment device based on emulsified asphalt preparation

Abstract

The utility model provides an environment-friendly waste gas treatment device based on emulsified asphalt preparation, and particularly belongs to the technical field of waste gas treatment. By means of the integrated design of the pretreatment assembly, the chemical spraying assembly and the catalytic oxidation assembly, efficient and synergistic removal of VOCs, H2S and particulate matter in waste gas is achieved, and meanwhile the device is compact in structure and convenient and fast to maintain. The device comprises a device shell, a gas inlet and a gas outlet, and further comprises a pretreatment assembly, a catalytic oxidation assembly and a spraying assembly, an empty groove is formed in the inner side of the device shell, a ventilation pipe is installed in the empty groove, a fixing rod is fixedly installed on the outer side of the ventilation pipe and fixedly arranged on the inner side wall of the device shell, an air inlet and an air outlet are formed in the top face of the device shell, and one end of the air inlet and one end of the air outlet communicate with the ventilation pipe. A pretreatment assembly and a catalytic oxidation assembly are arranged on the inner side of the device shell, the pretreatment assembly is located below the air inlet, the catalytic oxidation assembly is located below the air outlet, and a spraying assembly is arranged at the bottom of the inner side of the ventilation pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of environmental protection type waste gas treatment device based on preparation emulsified asphalt, specifically belongs to waste gas treatment technical field. BACKGROUND

[0002] Emulsified asphalt is stable emulsion formed by microparticle of asphalt dispersed in water phase, is widely used in each field, is common in road engineering, building waterproof and soil solidification etc., can also be applied in high-cold region and long tunnel and other special scenes;Volatile organic compounds (VOCs), hydrogen sulfide (H2S), particulate matter and odor gas can be generated in the production process of emulsified asphalt;

[0003] In prior art, emulsified asphalt waste gas treatment is mostly single technology (such as activated carbon adsorption or spray tower), but there are the following defects: waste gas composition is complex, single technology cannot realize the collaborative removal of multiple pollutants;Particulate matter is easy to block equipment, and maintenance cost is high;VOCs treatment efficiency is low, and energy consumption is large. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of environmental protection type waste gas treatment device based on preparation emulsified asphalt, to provide a kind of modularization, low energy consumption, high efficiency removal multiple pollutants waste gas treatment device, applicable to small and medium-sized emulsified asphalt production line.

[0005] To solve the above technical problems, the utility model adopts the technical scheme that: the novel includes device shell, gas inlet and gas outlet, also includes pretreatment component, catalytic oxidation component and spray component;

[0006] Air groove is arranged on the inner side of the device shell, and an air pipe is installed in the air groove, a fixed rod is fixedly installed on the outer side of the air pipe, the fixed rod is fixedly arranged on the inner side wall of the device shell, a gas inlet and a gas outlet are installed on the top surface of the device shell, and the gas inlet and the gas outlet are both communicated with the air pipe at one end, a pretreatment component and a catalytic oxidation component are arranged on the inner side of the device shell, the pretreatment component is located below the gas inlet, the catalytic oxidation component is located below the gas outlet, and a spray component is arranged on the inner side bottom of the air pipe.

[0007] Further, particulate matter is intercepted by the pretreatment component, and part of VOCs is adsorbed, VOCs is catalytically degraded by the catalytic oxidation component, and H2S and NOx are neutralized by the spray component.

[0008] The pretreatment component includes a dismounting block, a metal wire mesh layer, an activated carbon fiber layer and a threaded rod, the dismounting block is inserted into the device shell from outside to inside, the metal wire mesh layer and the activated carbon fiber layer are installed on the inner side of the dismounting block, the metal wire mesh layer is located above the activated carbon fiber layer, the threaded rod is installed on the inner side middle part of the dismounting block, and a threaded groove is arranged on the inner side wall of the device shell corresponding to the threaded rod;

[0009] Further, the threaded rod enables the dismounting block to be conveniently disassembled, and the dismounting block enables the metal wire mesh layer and the active carbon fiber layer to be quickly replaced, thereby facilitating the improvement of the waste gas treatment effect.

[0010] The pretreatment assembly further comprises a telescopic rod and a spring; the dismounting block is internally provided with the spring, one end of the spring is connected to the inner wall of the dismounting block, the other end of the spring is connected with the telescopic rod, and the telescopic rod is located outside the metal wire mesh layer and the active carbon fiber layer

[0011] Further, the telescopic rod and the spring enable the metal wire mesh layer and the active carbon fiber layer to be quickly and stably installed inside the dismounting block.

[0012] The catalytic oxidation assembly comprises a pulling block, a honeycomb ceramic loading block and a handle; the device shell is externally and internally inserted with the pulling block, the pulling block is fixedly installed inside the honeycomb ceramic loading block, the honeycomb ceramic loading block is loaded with the MnO2-CuO composite catalyst, and the pulling block is fixedly installed with the handle on one side;

[0013] Further, the MnO2-CuO composite catalyst coated on the honeycomb ceramic loading block enables VOCs to be catalytically degraded at 150-200 DEG C.

[0014] The spraying assembly comprises a funnel, an atomizing nozzle and a liquid outlet; the device shell is fixedly installed with the funnel on one side, the funnel is connected with the atomizing nozzle at one end, the atomizing nozzle is located inside the air pipe, the device shell is provided with the liquid outlet on the front side wall and corresponding to the atomizing nozzle, and the liquid outlet is communicated with the air pipe at one end;

[0015] Further, the emulsifier waste liquid or the alkaline solution is injected as the absorbent to neutralize H2S and NOx.

[0016] The device has the advantages that:

[0017] 1. The integrated design of the pretreatment assembly, the chemical spraying assembly and the catalytic oxidation assembly module realizes the efficient and collaborative removal of VOCs, H2S and particulate matters in waste gas, the device has compact structure and is convenient to maintain, and is suitable for small and medium-sized production lines.

[0018] 2. The threaded rod is rotatably arranged inside the dismounting block, the inner wall of the device shell is provided with a threaded groove corresponding to the threaded rod, the threaded rod can drive the dismounting block to be quickly and stably inserted into the device shell, the dismounting block drives the metal wire mesh layer and the active carbon fiber layer to treat waste gas, the telescopic rod and the spring arranged inside the dismounting block enable the metal wire mesh layer and the active carbon fiber layer to be quickly replaced, and the device is convenient to use and has good effect. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall front view of the present invention;

[0021] Figure 3 This is a cross-sectional view of the disassembly and assembly block of this utility model;

[0022] Figure 4 This is a top view schematic diagram of the honeycomb ceramic load block structure of this utility model;

[0023] Figure 5 This is a top view schematic diagram of the disassembly and assembly block of this utility model.

[0024] 1. Device housing 2. Vent pipe 3. Fixing rod 4. Air inlet 5. Air outlet 6. Disassembly block 7. Metal wire mesh layer 8. Activated carbon fiber layer 9. Telescopic rod 10. Spring 11. Threaded rod 12. Pull-out block 13. Honeycomb ceramic load block 14. Handle 15. Funnel 16. Atomizing nozzle 17. Liquid outlet. Detailed Implementation

[0025] The following will be combined with the appendix Figures 1-5 The technical solutions in the embodiments are described clearly and completely.

[0026] Specific implementation method one: as follows Figures 1-5 As shown, the device consists of a housing 1, a ventilation pipe 2, a pretreatment component, a catalytic oxidation component, and a spray assembly. The ventilation pipe 2 is fixedly installed inside the housing 1 by a fixing rod 3. The ventilation pipe 2 has a "U" shaped structure. The two ends of the top surface of the ventilation pipe 2 are connected to an air inlet 4 and an air outlet 5, respectively. The air inlet 4 can be connected to the exhaust gas emission device for preparing emulsified asphalt. The gas is treated in multiple stages through the various module components set inside the ventilation pipe 2, and finally the environmentally friendly gas is discharged through the air outlet 5.

[0027] The multi-stage treatment includes three methods: physical filtration, chemical absorption, and catalytic oxidation. The exhaust gas is physically filtered through a pretreatment component, which includes a metal wire mesh layer 7 and an activated carbon fiber layer 8. Both the metal wire mesh layer 7 and the activated carbon fiber layer 8 are installed inside the disassembly block 6, with the metal wire mesh layer 7 located above the activated carbon fiber layer 8. The metal wire mesh layer 7 first filters and intercepts particulate matter, and then the activated carbon fiber layer 8 performs preliminary adsorption of VOCs. A threaded rod 11 is rotatably installed in the middle of the inner side of the disassembly block 6, and a threaded groove is opened on the inner side wall of the device shell 1 corresponding to the threaded rod 11. Therefore, the threaded rod 11 can drive the disassembly block 6 to be stably inserted into the device shell 1, so that the metal wire mesh layer 7 and the activated carbon fiber layer 8 can treat the exhaust gas flowing in the ventilation pipe 2. The quick-release structure of the pretreatment component makes the structure easy to clean and replace.

[0028] The spray assembly can chemically absorb and treat the exhaust gas. The spray assembly includes a funnel 15 and an atomizing nozzle 16. By injecting emulsifier waste liquid or alkaline solution such as NaOH into the funnel 15, the absorbent is evenly sprayed through the atomizing nozzle 16 connected to one end of the funnel 15, so that H2S and NOx in the exhaust gas are neutralized and treated. Finally, the spray liquid is discharged through the liquid outlet 17 installed on the front side wall of the device housing 1, so that the spray liquid can be recycled and the chemical consumption is reduced.

[0029] The catalytic oxidation component can be used to treat waste gas by catalytic oxidation. The catalytic oxidation component includes a honeycomb ceramic support block 13, on which a MnO2-CuO composite catalyst is loaded, which enables the catalytic degradation of VOCs at low temperature. The honeycomb ceramic support block 13 is fixedly installed inside the pull-out block 12, and a handle 14 is fixedly installed on one side of the pull-out block 12. The honeycomb ceramic support block 13 can be replaced through the handle 14, thereby extending the service life of the structure.

[0030] Working principle: The waste gas generated during the preparation of emulsified asphalt is discharged into the ventilation pipe 2 through the air inlet 4. The waste gas undergoes primary treatment through physical filtration by the pretreatment component. The pretreatment component can intercept particulate matter and preliminarily adsorb VOCs by using a detachable metal wire mesh layer 7 and an activated carbon fiber layer 8. The waste gas then undergoes secondary treatment through chemical absorption by the spray component. H2S and NOx in the waste gas can be neutralized by using emulsifier waste liquid or alkaline solution as absorbent. Finally, the waste gas undergoes tertiary treatment through catalytic oxidation by the catalytic oxidation component. A catalyst such as MnO2-CuO composite catalyst is supported on the honeycomb ceramic support block 13 to achieve catalytic degradation of VOCs at low temperature. The modular waste gas treatment system integrates physical, chemical and biological treatment units and achieves high efficiency and synergy through a compact structure.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model's technical solution. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments without departing from the scope of the present utility model's technical solution, based on the technical essence of the present utility model and within the spirit and principles of the present utility model, shall still fall within the protection scope of the present utility model's technical solution.

Claims

1. An environmentally friendly waste gas treatment device based on the preparation of emulsified asphalt, comprising a device shell (1), an air inlet (4), and an air outlet (5), characterized in that, It also includes a pretreatment component, a catalytic oxidation component, and a spraying component; A slot is provided on the inner side of the device housing (1), and a ventilation pipe (2) is installed in the slot. A fixing rod (3) is fixedly installed on the outer side of the ventilation pipe (2). The fixing rod (3) is fixedly set on the inner side wall of the device housing (1). An air inlet (4) and an air outlet (5) are installed on the top surface of the device housing (1). One end of the air inlet (4) and the air outlet (5) are connected to the ventilation pipe (2). A pretreatment component and a catalytic oxidation component are provided on the inner side of the device housing (1). The pretreatment component is located below the air inlet (4), and the catalytic oxidation component is located below the air outlet (5). A spray component is provided at the bottom of the inner side of the ventilation pipe (2).

2. The environmentally friendly waste gas treatment device based on the preparation of emulsified asphalt according to claim 1, characterized in that, The pretreatment assembly includes a disassembly block (6), a wire mesh layer (7), an activated carbon fiber layer (8), and a threaded rod (11); The device housing (1) has a disassembly block (6) inserted from the outside to the inside. A metal wire mesh layer (7) and an activated carbon fiber layer (8) are installed on the inside of the disassembly block (6). The metal wire mesh layer (7) is located above the activated carbon fiber layer (8). A threaded rod (11) is installed in the middle of the inside of the disassembly block (6). A threaded groove is opened on the inner wall of the device housing (1) corresponding to the threaded rod (11).

3. The environmentally friendly waste gas treatment device based on the preparation of emulsified asphalt according to claim 1, characterized in that, The pretreatment assembly also includes a telescopic rod (9) and a spring (10); A spring (10) is provided on the inner side of the disassembly block (6). One end of the spring (10) is connected to the inner wall of the disassembly block (6), and the other end of the spring (10) is connected to a telescopic rod (9). The telescopic rod (9) is located on the outside of the metal wire mesh layer (7) and the activated carbon fiber layer (8).

4. The environmentally friendly waste gas treatment device based on the preparation of emulsified asphalt according to claim 1, characterized in that, The catalytic oxidation assembly includes a pull-out block (12), a honeycomb ceramic support block (13), and a handle (14); The outer casing (1) of the device is fitted with a pull-out block (12) from the outside to the inside. A honeycomb ceramic load block (13) is fixedly installed on the inside of the pull-out block (12). The honeycomb ceramic load block (13) is loaded with MnO2-CuO composite catalyst. A handle (14) is fixedly installed on one side of the pull-out block (12).

5. The environmentally friendly waste gas treatment device based on the preparation of emulsified asphalt according to claim 1, characterized in that, The spray assembly includes a funnel (15), an atomizing nozzle (16), and a liquid outlet (17); A funnel (15) is fixedly installed on one side of the device housing (1). One end of the funnel (15) is connected to an atomizing nozzle (16). The atomizing nozzle (16) is located inside the vent pipe (2). A liquid outlet (17) is installed on the front side wall of the device housing (1) corresponding to the atomizing nozzle (16). One end of the liquid outlet (17) is connected to the vent pipe (2).

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