CN214389455U - Precision casting exhaust-gas treatment integrated device - Google Patents
Precision casting exhaust-gas treatment integrated device Download PDFInfo
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- CN214389455U CN214389455U CN202023311884.2U CN202023311884U CN214389455U CN 214389455 U CN214389455 U CN 214389455U CN 202023311884 U CN202023311884 U CN 202023311884U CN 214389455 U CN214389455 U CN 214389455U
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Abstract
The utility model discloses a precision casting exhaust-gas treatment integrated device belongs to industrial waste gas treatment field. The utility model comprises a high-efficiency pneumatic mixed flow unit, a wet electrostatic dust collection unit, an oil-water separation unit, a dry filtering unit, a catalytic combustion filtering unit and an induced draft system; the air inlet system is communicated with the high-efficiency pneumatic mixed flow unit, and the high-efficiency pneumatic mixed flow unit is communicated with the wet electrostatic dust collection unit; the top of the wet electrostatic dust removal unit is provided with a charging device, the wet electrostatic dust removal unit is provided with an upper layer washing pipeline and a middle layer washing pipeline, the dust collecting electrodes are arranged in two layers and are respectively positioned below the upper layer washing pipeline and the middle layer washing pipeline, the discharge electrode is positioned in the center of the dust collecting electrode, and the wet electrostatic dust removal unit is communicated with the oil-water separation unit; the lower part of the oil-water separation unit is communicated with a dry-type filtering unit, the dry-type filtering unit is communicated with a catalytic combustion filtering unit, and the catalytic combustion filtering unit is connected with an induced draft system. The utility model discloses can reach the effect that the waste gas energy consumption is low, efficient, the expense is low, area is little, safe and reliable.
Description
Technical Field
The utility model relates to a precision casting exhaust-gas treatment integrated device belongs to industrial waste gas treatment field.
Background
Along with the development of social economy, people have stronger environmental awareness and the limit of environmental protection departments at all levels on the emission of pollutants is stricter. One of the effective measures for solving the pollution source at the present stage is to treat the pollution source to minimize the pollution influence on the surrounding ecological environment, and the total emission amount and the emission concentration of the pollution source meet (or are superior to) the requirements of corresponding national and local laws and regulations.
With the development and progress of the times, the foundry industry is also developing at a high speed, and environmental protection problems, such as air pollution, generated along with the foundry industry seriously affect the physical and mental health of surrounding residents and need to be treated. Before treatment, the pollution must be deeply known and analyzed, so that the medicine can be taken according to the symptoms.
The waste gas generated by the precision casting of a factory mainly comprises paraffin waste gas, ammonia-containing waste gas generated in the ammonium chloride soaking process, flue gas generated by the roasting of a mould shell, smoke dust of an intermediate frequency furnace, paint spraying waste gas, dust generated in the sand cleaning, cutting, grinding and polishing processes and the like. The high-temperature oil-containing dust-containing waste gas generated in the process of using the wax mold in the 3D mold pouring process pollutes the environment and has great potential safety hazard. The existing precision casting waste gas treatment method is divided into three methods, namely an activated carbon adsorption treatment method, a cloth bag dust removal treatment method and a low-temperature plasma treatment method. The method for treating the precision casting waste gas by activated carbon adsorption has the adverse effects of high operating cost and hazardous waste generation. The method for treating the precision casting waste gas by cloth bag dust removal easily causes the problems of frequent replacement of consumables and large occupied area. The method for treating the precision casting waste gas by the low-temperature plasma method easily causes the problems of low treatment efficiency and unsafe operation.
SUMMERY OF THE UTILITY MODEL
In order to solve the existing problems of high energy consumption, low treatment efficiency, high operating cost, large occupied area and unsafe operation, the utility model provides a device for treating exhaust gas by precision casting, which can achieve the effects of low treatment energy consumption, high efficiency, low cost, small occupied area, safety and reliability.
The utility model aims at realizing through the following technical scheme:
the utility model discloses a precision casting exhaust-gas treatment integrated device, including high-efficient pneumatic mixed flow unit, wet-type electrostatic precipitator unit, water oil separating unit, dry-type filter unit, catalytic combustion filter unit and induced air system.
The air inlet system is communicated with the high-efficiency pneumatic mixed flow unit, the air inlet of the high-efficiency pneumatic mixed flow unit is provided with a Venturi structure to separate pollutants from waste gas, and the bottom of the high-efficiency pneumatic mixed flow unit is provided with an oil scraping device; the middle layer is provided with a high-efficiency pneumatic mixed flow unit rotational flow plate system; an opening above the high-efficiency pneumatic mixed flow unit is communicated with the wet electrostatic dust collection unit; the top of the wet electrostatic dust removal unit is provided with a charging device, the airflow uniform distribution plate is positioned below the air inlet, the wet electrostatic dust removal unit is provided with an upper washing pipeline and a middle washing pipeline, the dust collecting electrodes are arranged in two layers and are respectively positioned below the upper washing pipeline and the middle washing pipeline, the discharge electrode is positioned at the center of the dust collecting electrode, and the bottom of the wet electrostatic dust removal unit is provided with an oil scraping device; an opening at the upper part of the wet electrostatic dust collection unit is communicated with the oil-water separation unit; the lower part of the oil-water separation unit is communicated with a dry-type filtering unit, the inlet of the dry-type filtering unit is provided with a metal wire mesh, the side wall opening of the dry-type filtering unit is communicated with a catalytic combustion filtering unit, the catalytic combustion filtering unit is provided with an adsorption device, a catalytic combustion furnace is connected with the adsorption device, and the inlet and outlet pipelines of the catalytic combustion filtering unit are provided with flame retardants; the catalytic combustion filtering unit is connected with the induced draft system.
A spraying system is arranged above the high-efficiency pneumatic mixed flow unit rotational flow plate system; the spraying system adopts the efficient atomizing nozzles, the aqueous solution is uniformly dispersed through the efficient atomizing nozzles, the liquid-gas ratio range is 1-4, the phenomenon of liquid entrainment is avoided by controlling the spraying amount, the subsequent treatment system is fully protected, and the service life is prolonged.
The elevation angle of the swirl blades of the swirl plate system of the high-efficiency pneumatic mixed flow unit is 20-30 degrees, the number of the blades is 24-30, and the plate spacing is 300-500 mm.
The blades in the high-efficiency pneumatic mixed flow unit cyclone plate system are made of carbon steel plates and aluminum plates, and the thickness delta of each blade is 3 mm; the swirl vanes are made of stainless steel, and the thickness delta of the vanes is 1.5-2 mm; the blade material selects pp material, and blade thickness delta is 4-5 mm.
The wet electrostatic dust removal unit adopts a tubular electric dust removal mode, the diameter of a dust collection electrode is 150-400 mm, and the length of a tube is 1-6 m.
The dry type filtering unit is internally provided with a plurality of layers of filtering materials, and the filtering material G4/F5 is selected.
The adsorbent in the adsorption device is honeycomb activated carbon, the number of the activated carbon layers is 1-2, the particle size of the activated carbon is 20-40 meshes, and the bulk density of the activated carbon is 0.4-0.5g/cm3。
The catalyst of the catalytic combustion filtering unit and the catalytic combustion filtering unit is a noble metal catalyst.
The catalytic combustion filtering unit is provided with a heating element, after the catalytic combustion furnace reaches a set temperature, hot air is introduced into the desorption bed, and organic waste gas is completely desorbed from the surface of the activated carbon under the heating action and enters the catalytic combustion furnace for combustion and decomposition.
The utility model discloses a working method of precision casting exhaust-gas treatment integrated device does:
and the waste gas is sent into the high-efficiency pneumatic mixed flow unit through the air inlet system for pretreatment. High-efficient pneumatic mixed flow unit adopts composite construction, the air inlet position sets up the venturi structure, waste gas is under the effect of induced draft system traction force, through the venturi structure, pollutant and liquid drop fully collide the contact in the waste gas, make the pollutant obtain effectual entrapment, high-efficient pneumatic mixed flow unit middle level sets up high-efficient pneumatic mixed flow unit whirl plate system, pollutant in the most efficient separation waste gas of best chamfer through whirl plate system swirl device to reach the purpose of desorption greasy dirt and partial waste gas. According to the treatment requirement, in order to eliminate the influence of oil stains on a subsequent treatment system, an oil scraping device is arranged at the bottom. A spraying system is arranged above the high-efficiency pneumatic mixed flow unit rotational flow plate system; the cyclone plate system of the high-efficiency pneumatic mixed flow unit has the cyclone blades with the elevation angle of 20-30 degrees, the number of the blades is 24-30, and the plate interval is 300-500 mm. The material of the rotational flow blade is carbon steel plate and aluminum plate, and the thickness delta of the blade is 3 mm; the swirl vanes are made of stainless steel, and the thickness delta of the vanes is 1.5-2 mm; the blade material selects pp material, and blade thickness delta is 4-5 mm. The gas fully reacts in the high-efficiency pneumatic mixed flow unit, the de-oiled wet electrostatic dust collection unit is communicated with the wet electrostatic dust collection unit through the upper part, the top of the wet electrostatic dust collection unit is provided with a charging device, an air flow distribution plate is positioned below an air inlet, the wet electrostatic dust collection unit is provided with a washing pipeline, a dust collecting electrode is positioned below the washing pipeline, a discharge electrode is positioned in the center of the dust collecting electrode, the wet electrostatic dust collection unit adopts a tubular electric dust collection mode, the diameter of the dust collecting electrode is phi 150-phi 400mm, and the length of the tube is 1-6 m. The bottom of the wet electrostatic dust collection unit is provided with an oil scraping device, and the wet electrostatic dust collection unit is connected with the oil scraping deviceIntroducing an oil-water separation unit; the smoke from the previous unit is ensured not to contain oil mist and moisture, and the purpose is to fully prolong the service life of rear-end equipment; an opening below the oil-water separation unit is communicated with the dry type filtering unit, a metal wire mesh is arranged at the inlet of the dry type filtering unit, two layers of filtering materials are arranged inside the dry type filtering unit, and the filtering materials of the dry type filtering unit are G4/F5, so that water mist and particulate matters in smoke are removed; the right side wall opening of the dry type filtering unit is communicated with the catalytic combustion filtering unit, the catalytic combustion filtering unit is provided with an adsorption device, and the pretreated organic waste gas is introduced into the adsorption device under the action of the fan and is uniformly distributed on the surface of the activated carbon. The activated carbon adsorbs the organic exhaust gas to the surface according to the intermolecular van der waals force. And discharging the purified clean waste gas through an induced draft system. When the activated carbon adsorption device enters a saturated state, the system is directly switched to carry out desorption treatment, the desorbed waste gas enters a catalytic combustion furnace, the catalytic combustion furnace is connected with the adsorption device, and a flame retardant device is positioned on an air inlet pipeline and an air outlet pipeline of a catalytic combustion filtering unit; the catalytic combustion furnace is internally provided with a heating element, after the catalytic combustion furnace reaches a set temperature, hot air is introduced into the desorption bed, organic waste gas is completely desorbed from the surface of the activated carbon under the heating action and enters the catalytic combustion furnace, and the catalytic combustion filtering unit selects a noble metal catalyst for decomposing the organic waste gas into H2O and CO2. And finally, the gas enters an induced draft system through an opening of an exhaust device communicated with the tail end of the catalytic combustion filtering unit and is discharged.
Has the advantages that:
1. the utility model discloses a precision casting exhaust-gas treatment integrated device, high-efficient pneumatic mixed flow unit is as the preprocessing unit, waste gas is under the effect of induced air system traction, through the venturi structure, pollutant and liquid drop fully collide the contact in the waste gas, make the pollutant obtain effectual entrapment, the back gets into high-efficient centrifugal swirl device, pollutant in the most efficient separation waste gas of best corner cut through whirl board system swirl device, the effectual mesh that has reached desorption greasy dirt and partial waste gas of the method of adopting the washing of high-efficient pneumatic mixed flow unit.
2. The utility model discloses a precision casting exhaust-gas treatment integrated device through the effectual structural design of wet-type electric precipitation unit gas distribution system, makes the even electric field that gets into of waste gas, and air current discharges under corona discharge's effect, makes the electrified absorption of particulate matter to the collection dirt electrode on, through the effectual paraffin, flying dust and the part organic waste gas that has reached in the desorption flue gas of wet-type electric precipitation's method.
3. The utility model discloses a precision casting exhaust-gas treatment integrated device, the method through adopting pneumatic mixed flow + wet-type electric precipitation is effectual has optimized the consumptive material of ordinary bag dust removal and has changed frequent problem. The oil-water separation unit effectively removes oil stains and water in the flue gas; the dry filtering unit effectively removes water mist in the flue gas; the optimized design of the adsorption device of the catalytic combustion filtering unit ensures that the organic waste gas is uniformly distributed on the surface of the activated carbon. When the activated carbon adsorption device enters a saturated state, the system can be directly switched to carry out desorption treatment. The organic waste gas components in the waste gas are safely and efficiently treated by the optimized design of the catalyst of the catalytic combustion furnace. The problems of low treatment efficiency and unsafe operation of the low-temperature plasma method are effectively solved.
4. The utility model discloses a precision casting exhaust-gas treatment integrated device filters through "high-efficient pneumatic mixed flow, wet-type electric precipitation and catalytic combustion" parallel method is effectual optimized traditional activated carbon adsorption method working costs height, produce the useless unfavorable effect of danger, avoids polluting the potential safety hazard that the component enrichment caused in the activated carbon. By adopting the method of 'efficient pneumatic mixed flow + wet electric dust removal + catalytic combustion filtration', the waste gas is treated in a high-temperature complex environment to ensure the standard emission, the paraffin, oil stain and particulate matter are well removed, the waste gas treatment system is safe and stable, the operating cost is low, and the amount of generated waste water is small.
Drawings
FIG. 1 is a system configuration diagram of a precision casting exhaust gas treatment integrated device of the present invention;
in the figure: the device comprises an air inlet system, a high-efficiency pneumatic mixed flow unit, a venturi structure, an oil scraping device a, an oil scraping device b, a high-efficiency pneumatic mixed flow unit cyclone plate system, a wet electrostatic dust collection unit, a 7-charge device, an 8-airflow uniform distribution plate, a 9-water washing pipeline, a 10-dust collecting electrode, an 11-discharge electrode, a 12-oil-water separation unit, a 13-wire mesh, a 14-dry filtering unit, a 15-catalytic combustion filtering unit, a 16-adsorption device, a 17-catalytic combustion furnace and an 18-induced air system.
Detailed Description
The present invention will be further described with reference to the following detailed description.
Example 1:
a production line with 12 sets of trolley-type resistance furnaces, wherein the initial pollutant particle concentration of the waste gas is 1000 mg/Nm3(6% oxygen content basis), 60mg/Nm of oil stain3(6% oxygen content basis), VOCs concentration 200mg/Nm3(6% reference oxygen content), and the exhaust gas temperature is about 180 ℃.
As shown in fig. 1, the precision casting waste gas treatment integrated device disclosed in this embodiment includes an air intake system 1, a high-efficiency pneumatic mixed flow unit 2, a venturi structure 3, an oil scraper 4a, an oil scraper 4b, a high-efficiency pneumatic mixed flow unit rotational flow plate system 5, a wet electrostatic dust removal unit 6, a charging device 7, an air flow uniform distribution plate 8, a water washing pipeline 9, a dust collecting electrode 10, a discharge electrode 11, an oil-water separation unit 12, a wire mesh 13, a dry filtering unit 14, a catalytic combustion filtering unit 15, an adsorption device 16, a catalytic combustion furnace 17, and an induced draft system 18.
And the waste gas is sent into the high-efficiency pneumatic mixed flow unit 2 through the air inlet system 1 for pretreatment. High-efficient pneumatic mixed flow unit 2 adopts composite construction, the air inlet position sets up venturi structure 3, waste gas is under induced air system 18's effect, through venturi structure 3, pollutant and liquid drop fully collide the contact in the waste gas, make the pollutant obtain effectual entrapment, 2 middle levels of high-efficient pneumatic mixed flow unit whirl board system 5 that set up of high-efficient pneumatic mixed flow unit, pollutant in the best corner cut of the swirl device through high-efficient pneumatic mixed flow unit whirl board system 5 can the most efficient separation waste gas, in order to reach the purpose of desorption greasy dirt and partial waste gas. The bottom of the high-efficiency pneumatic mixed flow unit 2 is provided with an oil scraping device a4a, according to the treatment requirement, in order to eliminate the influence of oil stains on the subsequent treatment system,the elevation angle of the swirl blades selected by the swirl plate system 5 of the high-efficiency pneumatic flow mixing unit 2 is 20-30 degrees, the number of the blades is 24-30, and the plate interval is 300-500 mm. The material of the swirl plate blade is carbon steel plate and aluminum plate, and the thickness delta of the blade is 3 mm; the swirl vanes are made of stainless steel, and the thickness delta of the vanes is 1.5-2 mm; the blade material selects pp material, and blade thickness delta is 4-5 mm. The middle layer of the high-efficiency pneumatic mixed flow unit 2 is provided with a high-efficiency pneumatic mixed flow unit rotational flow plate system 5, and the spraying system is positioned above the high-efficiency pneumatic mixed flow unit rotational flow plate system 5; the spraying system adopts the efficient atomizing nozzles, the aqueous solution is uniformly dispersed through the efficient atomizing nozzles, the liquid-gas ratio range is 1-4, the phenomenon of liquid entrainment is avoided by effectively controlling the spraying amount, the subsequent treatment system is fully protected, and the service life is prolonged. The gas fully reacts in the high-efficiency pneumatic mixed flow unit 2, after deoiling, the gas is communicated with a wet electrostatic dust removal unit 6 through the upper part, and the gas is further treated through corona discharge and gas ionization, so that paraffin, fly ash and partial organic waste gas in the smoke are removed, and the normal work of a subsequent treatment unit is prevented from being influenced; the top of the wet electrostatic dust removal unit 6 is provided with a charging device 7, the airflow uniform distribution plate 8 is positioned below the air inlet, the wet electrostatic dust removal unit is provided with a water washing pipeline 9, the dust collecting electrode 10 is positioned below the water washing pipeline, the discharge electrode 11 is positioned at the center of the dust collecting electrode 10, the wet electrostatic dust removal unit 6 adopts a tubular electric dust removal mode, the diameter of the dust collecting electrode 10 is phi 219mm, and the length of the tube is 1.5 m. The bottom of the wet electrostatic dust collection unit 6 is provided with an oil scraping device b4b, and the upper opening of the right side wall of the wet electrostatic dust collection unit is communicated with the oil-water separation unit 12; the smoke from the previous unit is ensured not to contain oil mist and moisture, and the purpose is to fully prolong the service life of rear-end equipment; an opening below the oil-water separation unit 12 is communicated with a dry type filtering unit, a wire mesh 13 is arranged at the inlet of the dry type filtering unit, two layers of filtering materials 14 are arranged inside the dry type filtering unit, and the filtering materials 14 of the dry type filtering unit are G4/F5, so that water mist and particulate matters in smoke are removed; the dry type filtering unit is communicated with the catalytic combustion filtering unit 15, the catalytic combustion filtering unit 15 is provided with an adsorption device 16, and the pretreated organic waste gas is introduced into the adsorption device 16 under the action of a fan and is uniformly distributed on the surface of the activated carbon. The activated carbon adsorbs the organic exhaust gas to the surface according to the intermolecular van der waals force. After being purifiedThe clean exhaust gas is exhausted through the induced draft system 18. When the activated carbon adsorption device 16 enters a saturated state, the system is directly switched to carry out desorption treatment, the desorbed waste gas enters a catalytic combustion furnace 17 which is positioned behind the adsorption device 16, and a flame arrester is positioned on an air inlet pipeline and an air outlet pipeline of a catalytic combustion filtering unit 15; an induced draft system 18 is communicated below the catalytic combustion filtering unit 15. The catalytic combustion furnace 17 is internally provided with a heating element, after the catalytic combustion furnace 17 reaches a set temperature, hot air is introduced into the desorption bed, organic waste gas is completely desorbed from the surface of the activated carbon under the heating effect and enters the catalytic combustion furnace 17, and the catalyst of the catalytic combustion filtering unit 15 is a noble metal catalyst, so that the organic waste gas is decomposed into H2O and CO2. And finally, the gas is communicated with an induced draft system through the lower part of the catalytic combustion filtering unit 15 and is discharged.
As shown in the figure, the precision casting waste gas treatment integrated device disclosed in the present embodiment is a device of "high-efficiency pneumatic mixed flow + wet electric dust removal + catalytic combustion filtration". After being treated by a precision casting waste gas treatment integrated device, the concentration of the particulate matters in the tail gas is 10mg/Nm3(6% reference oxygen content), treatment efficiency of 99%, oil contamination concentration of 1mg/Nm3(6% reference oxygen content), a treatment efficiency of 98.3%, a VOCs concentration of 12mg/Nm3(6% reference oxygen content), the treatment efficiency was 94%.
At 12053Nm3Discharge per hour is exemplified by:
| before treatment | |
| Exhaust gas temperature | 180℃ |
| Concentration of particulate matter | 1000mg/Nm3(6% reference oxygen content) |
| Concentration of oil contamination | 60mg/Nm3(6% reference oxygen content) |
| Concentration of VOCs | 200mg/Nm3(6% reference oxygen content) |
| After treatment | |
| Exhaust gas temperature | 50℃ |
| Concentration of particulate matter | 10mg/Nm3(6% reference oxygen content) |
| Concentration of oil contamination | 1mg/Nm3(6% reference oxygen content) |
| Concentration of VOCs | 12mg/Nm3(6% reference oxygen content) |
After the experiment is finished, the concentration of the tail gas particulate matters in the precision casting waste gas is lower than 10mg/Nm3(6% reference oxygen content), treatment efficiency of 99%, oil contamination concentration of 1mg/Nm3(6% reference oxygen content), a treatment efficiency of 98.3%, a VOCs concentration of 12mg/Nm3(6% reference oxygen content), the treatment efficiency was 94%. The effects of low energy consumption, high treatment efficiency, low operating cost, small occupied area, safety and reliability are achieved.
The above-mentioned detailed description further elaborates the purpose, technical solution and advantages of the present invention, and it should be understood that the above only is a detailed description of the present invention, and is not intended to limit the scope of the present invention, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (9)
1. The utility model provides a precision casting exhaust-gas treatment integrated device which characterized in that: comprises a high-efficiency pneumatic mixed flow unit (2), a wet electrostatic dust collection unit (6), an oil-water separation unit (12), a dry filtering unit (14), a catalytic combustion filtering unit (15) and an induced draft system (18);
the air inlet system is communicated with the high-efficiency pneumatic mixed flow unit (2), the air inlet of the high-efficiency pneumatic mixed flow unit (2) is provided with a Venturi structure (3) to separate pollutants from waste gas, and the bottom of the high-efficiency pneumatic mixed flow unit (2) is provided with an oil scraping device a (4 a); the middle layer is provided with a high-efficiency pneumatic mixed flow unit rotational flow plate system (5); the high-efficiency pneumatic mixed flow unit (2) is communicated with the wet electrostatic dust collection unit (6);
the wet electrostatic dust removal unit (6) comprises a charging device (7), an airflow uniform distribution plate (8), a water washing pipeline (9), a dust collection electrode (10) and a discharge electrode (11); the top of the wet electrostatic dust collection unit (6) is provided with a charging device (7), an airflow uniform distribution plate (8) is positioned below an air inlet of the wet electrostatic dust collection unit (6), the wet electrostatic dust collection unit (6) is provided with a middle-layer washing pipeline (9), two dust collection electrodes (10) are arranged and are respectively positioned below the upper-layer washing pipeline and the middle-layer washing pipeline (9), a discharge electrode (11) is positioned at the center of the dust collection electrode (10), and the bottom of the wet electrostatic dust collection unit is provided with an oil scraping device b (4 b); the upper opening of the wet electrostatic dust collection unit (6) is communicated with the oil-water separation unit (12); the lower part of the oil-water separation unit (12) is communicated with a dry-type filtering unit (14), the inlet of the dry-type filtering unit (14) is provided with a metal wire mesh (13), the side wall opening of the dry-type filtering unit (14) is communicated with a catalytic combustion filtering unit (15), the catalytic combustion filtering unit (15) is provided with an adsorption device (16), a catalytic combustion furnace (17) is connected with the adsorption device (16), and the inlet and outlet pipelines of the catalytic combustion filtering unit (15) are provided with flame retardants; the catalytic combustion filtering unit (15) is connected with an induced draft system (18).
2. The precision casting exhaust-gas treatment integrated device of claim 1, wherein: a spraying system is arranged above the high-efficiency pneumatic mixed flow unit cyclone plate system (5); the spraying system adopts the efficient atomizing nozzles, the aqueous solution is uniformly dispersed through the efficient atomizing nozzles, the liquid-gas ratio range is 1-4, the phenomenon of liquid entrainment is avoided by controlling the spraying amount, and the subsequent treatment system is fully protected.
3. The precision casting exhaust-gas treatment integrated device of claim 1, wherein: the elevation angle of the swirl blades of the high-efficiency pneumatic mixed flow unit swirl plate system (5) is 20-30 degrees, the number of the blades is 24-30, and the plate spacing is 300-500 mm.
4. The precision casting exhaust-gas treatment integrated device of claim 1, wherein: the blades in the high-efficiency pneumatic mixed flow unit cyclone plate system (5) are made of carbon steel plates and aluminum plates, and the thickness delta of each blade is 3 mm; the swirl vanes are made of stainless steel, and the thickness delta of the vanes is 1.5-2 mm; the blade material selects pp material, and blade thickness delta is 4-5 mm.
5. The precision casting exhaust-gas treatment integrated device of claim 1, wherein: the wet electrostatic dust removal unit (6) adopts a tubular electric dust removal mode, the diameter of a dust collection electrode is 150-400 mm, and the length of a pipe is 1-6 m.
6. The precision casting exhaust-gas treatment integrated device of claim 1, wherein: the dry type filtering unit (14) is internally provided with a plurality of layers of filtering materials, and the filtering material G4/F5 is selected.
7. The precision casting exhaust-gas treatment integrated device of claim 1, wherein: the adsorbent in the adsorption device (16) is honeycomb activated carbon, the number of layers of the activated carbon is 1-2, and the particle size of the activated carbon is 20-40 meshesThe bulk density of the activated carbon is 0.4-0.5g/cm3。
8. The precision casting exhaust-gas treatment integrated device of claim 1, wherein: the catalyst of the catalytic combustion filtering unit (15) is a noble metal catalyst.
9. The precision casting exhaust-gas treatment integrated device of claim 1, wherein: the catalytic combustion furnace (17) is internally provided with a heating element, after the set temperature is reached, hot air is introduced into the desorption bed, and organic waste gas is completely desorbed from the surface of the activated carbon under the heating action and enters the catalytic combustion furnace (17) for combustion and decomposition.
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| CN202023311884.2U CN214389455U (en) | 2020-12-31 | 2020-12-31 | Precision casting exhaust-gas treatment integrated device |
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| CN202023311884.2U CN214389455U (en) | 2020-12-31 | 2020-12-31 | Precision casting exhaust-gas treatment integrated device |
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