CN107754553B - Exhaust gas treatment equipment and process - Google Patents
Exhaust gas treatment equipment and process Download PDFInfo
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- CN107754553B CN107754553B CN201711187863.4A CN201711187863A CN107754553B CN 107754553 B CN107754553 B CN 107754553B CN 201711187863 A CN201711187863 A CN 201711187863A CN 107754553 B CN107754553 B CN 107754553B
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- 238000011282 treatment Methods 0.000 title claims abstract description 160
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000002912 waste gas Substances 0.000 claims abstract description 133
- 238000001816 cooling Methods 0.000 claims abstract description 91
- 239000007789 gas Substances 0.000 claims abstract description 71
- 244000280244 Luffa acutangula Species 0.000 claims abstract description 22
- 235000009814 Luffa aegyptiaca Nutrition 0.000 claims abstract description 22
- 238000005507 spraying Methods 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 72
- 239000007788 liquid Substances 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000009776 industrial production Methods 0.000 abstract description 3
- 229910001018 Cast iron Inorganic materials 0.000 abstract description 2
- 239000003973 paint Substances 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 description 10
- 239000000126 substance Substances 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 239000003344 environmental pollutant Substances 0.000 description 8
- 231100000719 pollutant Toxicity 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 235000003956 Luffa Nutrition 0.000 description 3
- 241000219138 Luffa Species 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000011221 initial treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/20—Organic adsorbents
- B01D2253/202—Polymeric adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/90—Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/65—Employing advanced heat integration, e.g. Pinch technology
- B01D2259/652—Employing advanced heat integration, e.g. Pinch technology using side coolers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention provides waste gas treatment equipment and a process, which belong to the field of waste gas treatment, and comprise a cooling device and a waste gas treatment pipeline, wherein a gas outlet of the cooling device is connected with the waste gas treatment pipeline, loofah sponge is filled in the waste gas treatment pipeline, the waste gas treatment pipeline comprises a gas inlet pipe, a middle pipe and a gas outlet pipe which are sequentially communicated, the diameter of the middle pipe is smaller than that of the gas inlet pipe and the gas outlet pipe, one end of the gas inlet pipe is provided with a gas inlet and communicated with the cooling device, and one end of the gas outlet pipe is provided with a gas outlet; the treatment process comprises three steps of cooling, reducing treatment and micro-treatment. The waste gas treatment equipment has the advantages of simple structure, small volume, small occupied area, small power, low manufacturing cost, few waste gas treatment process steps, short flow and convenient operation, can greatly reduce the waste gas treatment cost, and is suitable for waste gas treatment generated in various industrial production such as rubber, cast iron, paint spraying and the like.
Description
Technical Field
The invention relates to the field of waste gas treatment, in particular to waste gas treatment equipment and a waste gas treatment process.
Background
Enterprises can generate various waste gases in the production and processing processes, and untreated waste gases are directly discharged into the atmosphere to cause serious pollution to the air, destroy ecology and harm the body health and living environment of human beings. The current common waste gas treatment modes are activated carbon adsorption, water absorption, combustion and the like, and waste gas treatment towers are mostly adopted for treating waste gas. The combustion method is suitable for treating combustible gas, and has the advantages of high treatment cost and easy secondary pollution, and a large amount of fuel is consumed. The water absorption method is suitable for water-soluble gas, and has large water consumption and low purification efficiency. The activated carbon adsorption method has a good adsorption effect, but is expensive, and the activated carbon after complete adsorption cannot be reused, and in actual use, the activated carbon needs to be replaced at short intervals, so that the treatment cost is quite expensive.
In addition, the waste gas treatment tower, the combustion tower used in the combustion method and the equipment used in the water treatment are huge, and the energy consumption is high (basically hundreds or thousands of power), so the cost of waste gas treatment is high at present.
Based on this, the present application is presented.
Disclosure of Invention
The invention aims to provide low-energy-consumption industrial waste gas treatment equipment which is small in occupied area, low in power and low in waste gas treatment cost and can be operated for a long time.
In order to achieve the above purpose, the invention adopts the following technical scheme: the waste gas treatment equipment comprises a waste gas treatment pipeline, and loofah sponge is stuffed in the waste gas treatment pipeline. The waste gas treatment pipeline comprises a feeding pipe, a plurality of middle pipes and a discharging pipe which are communicated in sequence, the diameter of each middle pipe is smaller than that of the feeding pipe and the diameter of each discharging pipe, an air inlet is formed in one end of each feeding pipe, and an air outlet is formed in one end of each discharging pipe.
The inlet pipe is a front pipeline of an exhaust gas treatment pipeline connected with the cooling device, the outlet pipe is a rear pipeline of the exhaust gas treatment pipeline directly discharged or connected with subsequent treatment equipment, and the middle pipe is a part of pipeline for connecting the inlet pipe and the outlet pipe. The waste gas to be treated is cooled by the cooling device, then is led into the waste gas pipeline, pollutants in the waste gas are adsorbed by the loofah sponge when sequentially passing through the inlet pipe, the middle pipe and the outlet pipe, and finally the treated waste gas is discharged from the air outlet of the outlet pipe.
According to the invention, the pipe diameter of the middle pipe is smaller than that of the inlet pipe and the outlet pipe, so that waste gas is blocked to a certain extent in the process of passing from the inlet pipe to the middle pipe and from the middle pipe to the outlet pipe, on one hand, the moving speed of the waste gas can be slowed down, and on the other hand, the reducing pipe design can improve the adsorption effect of the luffa, namely the treatment effect of the waste gas pipeline.
Preferably, the number of the middle pipes is three, and the middle pipes are arranged in a triangular shape. The structure has three middle pipes, and ensures the flow of exhaust gas while reducing the pipe diameter of the middle pipes.
Preferably, the exhaust device is arranged at the air outlet of the exhaust gas treatment pipeline or the air outlet of the cooling device or the air outlet of the micro-treatment device, and preferably, the exhaust device comprises an inner pipe, a middle pipe and an outer pipe with diameters sequentially increased, two ends of the inner pipe are opened, and loofah sponge is filled in the inner pipe. The bottom end of the middle pipe is opened and sleeved on the inner pipe, and the top end of the middle pipe is closed; the outer pipe is sleeved on the inner pipe and wraps the middle pipe, the bottom end of the outer pipe is in sealing and fixed connection with the side wall of the inner pipe, an opening is formed in the top of the outer pipe and communicated with the outside, and waste gas discharged from the air outlet is discharged after passing through the inner pipe, the middle pipe and the outer pipe in sequence. The content of pollutants in the waste gas subjected to cooling treatment is reduced, and the adsorption of the loofah sponge in the waste gas treatment equipment is more convenient.
Preferably, the inlet pipe and the outlet pipe are arranged side by side, two ends of the middle pipe are respectively communicated with one ends of the inlet pipe and the outlet pipe, which are not opened, preferably, the size of the air inlet is smaller than the pipe diameter of the inlet pipe, and the size of the air outlet is smaller than the pipe diameter of the outlet pipe. The inlet pipe and the outlet pipe are arranged side by side, two ends of the middle pipe are respectively communicated with one ends of the inlet pipe and the outlet pipe, which are not opened, in the structure, and reducing pipes are respectively formed at the air inlet of the air inlet pipe and the air outlet of the outlet pipe and used for reducing the circulation speed of waste gas.
Preferably, a cooling device is arranged, an air inlet and an air outlet are formed in the side wall or the top of the cooling device, and the air outlet of the cooling device is connected with a waste gas treatment pipeline; the cooling device mainly comprises a cooling box body and a cooling coil. The cooling coil is arranged in the cooling box body, and the size of the cooling coil is matched with that of the cooling box body. The inlet and the outlet of the cooling coil are fixed and led out on the top or the side wall of the cooling box body, and the cooling coil is not communicated with the inside of the cooling box body.
In this structure, let in cold water in the cooling coil, let in waste gas in the cooling box, the cold water in the cooling coil keeps circulating flow all the time, and waste gas cools down under the cooling action of cooling coil after the cooling box.
Preferably, the gas outlet of the waste gas treatment pipeline is connected with a micro-treatment device, the micro-treatment device comprises at least three water tanks, a certain volume of water or waste gas treatment liquid is filled in the water tanks, the water tanks are communicated with the waste gas treatment pipeline through pipelines before the water tanks and the water tanks, the inlet pipeline is inserted below the liquid level, and the outlet pipeline is positioned above the liquid level. The structure is used for treating water-soluble pollutants in the waste gas which are not absorbed by the waste gas treatment pipeline or in the waste gas, further reducing the content of the pollutants in the waste gas and ensuring that the waste gas can be directly discharged according to the compound discharge standard.
Preferably, an anti-overflow baffle is arranged below the tail end of the air outlet pipeline in the water tank, and a plurality of thin rods of the anti-overflow baffle are fixed at the tail end of the pipeline. Because the waste gas flows in the waste gas treatment pipeline and the water tank at a higher speed, the structure can prevent water or treatment fluid in the water tank from being influenced by gas movement and entering the air outlet pipeline of the water tank, and the volume of water or cooling fluid in the water tank can be greatly reduced.
Preferably, the air inlet of the exhaust gas treatment pipeline or the air inlet of the cooling device is connected with a high-pressure fan. The high-pressure fan is used for sucking or driving the waste gas into a subsequent treatment device at a higher speed, and is one of power sources for flowing the waste gas.
Preferably, a spraying device is arranged at the air inlet of the cooling device or the high-pressure fan. The spraying device is mainly used for increasing the humidity of the waste gas, and the humidified waste gas can be adsorbed by the loofah sponge more effectively. And the waste gas after passing through the spraying device can be used for treating water-soluble and large-particle substances in the waste gas.
Preferably, the spraying device comprises a spraying box, the front side and the rear side of the spraying box are respectively provided with an air inlet and an air outlet, and the air inlet is connected with a centrifugal fan. The spraying device is used for cooling the waste gas, and performing primary treatment on the waste gas, so that the content of large-particle substances and water-soluble substances in the waste gas is reduced.
The invention also aims to provide an exhaust gas treatment process which is simple in steps and convenient to operate, and has low treatment cost and excellent treatment effect.
In order to achieve the above object, the exhaust gas treatment process of the present invention comprises the steps of:
Step one, cooling: sucking and pressing the waste gas into a cooling device through a high-pressure fan to cool;
Step two, reducing treatment: allowing the cooled waste gas to pass through a reducing treatment pipeline, and discharging the waste gas after being adsorbed by loofah packed in the reducing treatment pipeline;
step three, micro-processing: the waste gas is introduced into a multistage micro-processing device formed by connecting a plurality of water tanks in series, so that the waste gas is fully contacted with water or processing liquid in the water tanks and then is discharged.
The invention has the beneficial effects that: the invention adopts the luffa as the main adsorption material for waste gas treatment, the luffa has strong adsorption capacity and slow release property, and can timely absorb peculiar smell substances and pollutants in the waste gas when the waste gas flows at high speed, thereby reducing the pollutants in the waste gas and facilitating the direct discharge of the waste gas. In addition, the loofah sponge has wide sources and low price, can be used for 2-3 months, can be reused after being completely adsorbed, and is a renewable environment-friendly article.
The waste gas treatment equipment has the advantages of simple structure, small volume, small occupied area, small power, low manufacturing cost, few waste gas treatment process steps, short flow and convenient operation, can greatly reduce the waste gas treatment cost and ensure the treatment quality, and is suitable for the waste gas treatment generated in various industrial production such as rubber and plastic, cast iron, paint spraying and the like.
Drawings
Fig. 1 is a top view of a low power consumption exhaust gas treatment device according to the present invention.
Fig. 2 is a front view of the low power consumption exhaust gas treatment device according to the present invention.
Fig. 3 is a side view of a low power exhaust treatment device according to the present invention.
Fig. 4 is a partially enlarged schematic view of the low-power consumption exhaust gas treatment device according to the present invention.
Fig. 5 is a schematic diagram of the working flow of the low-power consumption exhaust gas treatment device according to the present invention.
Fig. 6 is a schematic diagram of a low power exhaust treatment device eductor according to the present invention.
Fig. 7 is an enlarged schematic view of the low power consumption exhaust gas treatment device of fig. 6 according to the present invention.
The figure shows: 1-cooling device, 1 a-waste gas inlet, 1 b-waste gas outlet, 11-cooling box, 12-cooling coil, 12 a-water inlet, 12 b-water outlet, 2-high-pressure fan, 3-waste gas treatment pipeline, 31-intermediate pipe, 32-inlet pipe, 33-outlet pipe, 4-communication pipeline, 5-micro-treatment device, 5 a-air inlet, 5 b-air outlet, 5 c-outlet, 51-micro-treatment water tank I, 52-micro-treatment water tank II, 53-micro-treatment water tank III, 54-micro-treatment water tank IV, 55-micro-treatment water tank V, 52 a-outlet pipe, 52 b-connecting rod, 52 c-overflow preventing baffle, 6-water, 71-outer pipe, 72-intermediate pipe, 73-inner pipe, 74-luffa, 75-supporting rod, 76-fixing piece, 77-lower limiting piece.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Example 1
As shown in fig. 1,2 and 3, the exhaust gas treatment device comprises a high-pressure fan 2, a cooling device 1, an exhaust gas treatment pipeline 3 and a micro-treatment device 5 which are sequentially communicated, wherein an exhaust gas inlet of the high-pressure fan 2 is directly communicated with an exhaust gas outlet of equipment in a factory or is communicated with the exhaust gas outlet through air suction. The cooling device 1 mainly comprises a cooling box 11 and a cooling coil 12. The cooling coil 12 is provided in the cooling box 11, and its size is adapted to the cooling box 11. The inlet and outlet of the cooling coil 12 are fixed and led out on the side wall of the top of the cooling box 11, and the cooling coil 12 is not communicated with the inside of the cooling box 11. The top of the cooling device 1 is provided with a first waste gas inlet 1a and a first waste gas outlet 1b, and the first waste gas inlet 1a is communicated with a waste gas outlet of the high-pressure fan 2.
The exhaust gas treatment pipeline 3 comprises an inlet pipe 32, a middle pipe 31 and an outlet pipe 33 which are sequentially communicated, wherein the total number of the middle pipes 31 is three, the pipe diameters of the middle pipes are smaller than that of the inlet pipe 32 and the outlet pipe 33, one end of the inlet pipe 32 is provided with an exhaust gas inlet II which is communicated with an exhaust gas outlet I1 b of the cooling device 1, and one end of the outlet pipe 33 is provided with an exhaust gas outlet II which is communicated with an air inlet 5a of the micro-treatment device 5 through a communication pipeline 4. The inlet pipe 32 and the outlet pipe 33 are arranged side by side, and both ends of the intermediate pipe 31 are respectively communicated with one ends of the inlet pipe 32 and the outlet pipe 33, which are not opened. The three intermediate pipes 31 are arranged in a triangular shape, and the flow rate of the exhaust gas is ensured while the pipe diameter of the intermediate pipes 31 is reduced. The loofah 74 is filled in the inlet pipe 32, the middle pipe 31 and the outlet pipe 33, when the waste gas passes through the waste gas treatment pipeline 3, the carried or wrapped pollutant is adsorbed by the loofah 74, and the treated waste gas enters the micro-treatment device 5 from the waste gas outlet II through the communication pipeline 4. In the embodiment, the second exhaust gas inlet is formed on the end surface of one end of the inlet pipe 32, and the size of the air inlet 5a is smaller than the pipe diameter of the inlet pipe 32; the second exhaust gas outlet is arranged on the side wall of the top of the outlet pipe 33, and the size of the second exhaust gas outlet is smaller than the pipe diameter of the outlet pipe 33. The connection between the second exhaust gas inlet and the inlet pipe 32 and the connection between the second exhaust gas outlet and the outlet pipe 33 are respectively formed into reducing positions.
The inlet pipe 32 is a front pipe of the exhaust gas treatment pipe 3 connected to the cooling device 1, the outlet pipe 33 is a rear pipe of the exhaust gas treatment pipe 3 directly discharged or connected to a subsequent treatment apparatus, and the intermediate pipe 31 is a part of the pipe for connecting the inlet pipe 32 and the outlet pipe 33.
Referring to fig. 4, the micro-treatment device 5 includes five water tanks, i.e., a first micro-treatment water tank 51, a second micro-treatment water tank 52, a third micro-treatment water tank 53, a fourth micro-treatment water tank 54, and a fifth micro-treatment water tank 55, wherein the first micro-treatment water tank 51, the second micro-treatment water tank 52, the third micro-treatment water tank 53, the fourth micro-treatment water tank 54, and the fifth micro-treatment water tank 55 are respectively filled with 30-35 kg of water 6 or waste gas treatment liquid, and two adjacent micro-treatment water tanks are communicated through obliquely arranged pipelines, and the first micro-treatment water tank 51 is communicated with the waste gas treatment pipeline 3 through a communication pipeline 4. In the first micro-processing water tank 51, the second micro-processing water tank 52, the third micro-processing water tank 53, the fourth micro-processing water tank 54 and the fifth micro-processing water tank 55, the air inlet pipe is inserted below the liquid level, and the air outlet pipe 52a is positioned above the liquid level. An anti-overflow baffle 52c is arranged below the tail end of the air outlet pipe 52a, and the anti-overflow baffle 52c is suspended and fixed below the tail end of the pipeline through a plurality of connecting rods 52 b.
The high-pressure fan 2 serves to suck the exhaust gases and to keep them at a high speed into the cooling device 1. Cold water 6 is introduced into the cooling coil 12, waste gas is introduced into the cooling box 11, the cold water 6 in the cooling coil 12 always keeps circulating flow, and the waste gas is cooled under the cooling effect of the cooling coil 12 after passing through the cooling box 11. Then, the waste gas entering the cooling device 1 enters the waste gas treatment pipeline 3 from the cooling box 11 under the pushing and extrusion actions of the waste gas entering the cooling device, and sequentially passes through the inlet pipe 32, the middle pipe 31 and the outlet pipe 33, and the movement speed of the waste gas is limited and slowed down because of a plurality of reducing positions in the waste gas treatment pipeline 3, and a large amount of substances carried by the waste gas when the waste gas flows through the loofah sponge 74 are adsorbed by the loofah sponge 74. Finally, the waste gas continuously enters the micro-treatment device 5 under the action of the subsequent waste gas, and the content of unabsorbed substances or water-soluble 6 pollutant substances in the waste gas in the treatment process of the waste gas treatment pipeline 3 is greatly reduced in the five-stage micro-treatment water tank, so that the waste gas reaches the standard capable of being directly discharged.
The specific steps of the exhaust gas treatment process in this embodiment are as follows:
step one, cooling: the exhaust gas is sucked and pressed into the cooling device 1 by the high-pressure fan 2 for cooling;
Step two, reducing treatment: passing the cooled exhaust gas through a reducing treatment pipeline, adsorbing by a loofah sponge 74 filled in the reducing treatment pipeline, and discharging;
step three, micro-processing: the waste gas is introduced into a multistage micro-processing device 5 formed by connecting a plurality of water tanks in series, and is discharged after being fully contacted with water 6 or processing liquid in the water tanks.
Example 2
This embodiment differs from embodiment 1 in that: the air inlet of the high-pressure fan 2 is provided with a spraying device. The spraying device is used for cooling the waste gas, and performing primary treatment on the waste gas, so that the content of large-particle substances and substances soluble in water 6 in the waste gas is reduced, and the subsequent waste gas treatment is facilitated.
Example 3
As shown in fig. 6, this embodiment is different from embodiment 1 in that: the air outlet 5b of the waste gas treatment pipeline 3 or the air outlet 5b of the cooling device 1 or the air outlet 5b of the micro-treatment device 5 is provided with an ejector, the ejector comprises an inner pipe 73, a middle pipe 72 and an outer pipe 71, the diameters of the inner pipe 73 are sequentially increased, two ends of the inner pipe 73 are opened, and loofah 74 is filled in the inner pipe; the middle tube 72 is open at the bottom end and is sleeved on the inner tube 73, and the top end is closed. The outer tube 71 is sleeved on the inner tube 73 and wraps the middle tube 72, the bottom end of the outer tube 71 is in sealing and fixed connection with the side wall of the inner tube 73, an opening is formed in the top of the outer tube 71 and communicated with the outside, and waste gas discharged from the air outlet 5b is discharged after passing through the inner tube 73, the middle tube 72 and the outer tube 71 in sequence. The exhauster is used for treating a small amount of residual waste gas after the treatment of the device, so as to further reduce the content of the waste gas.
Preferably, the middle tube 72 is suspended and fixed above the inner tube 73 by a supporting rod 75, and an air outlet channel is formed between the middle tube 72 and the inner tube 73 for discharging the waste gas.
Preferably, the bottom end of the outer tube 71 is fixedly connected to the inner tube 73 by a fixing member 76 (annular sealing piece) as shown in fig. 7.
Preferably, in order to avoid the loofah 74 from being displaced due to exhaust gas emissions during use, the present embodiment provides a lower stopper 77 and an upper stopper (not shown) on the inner sidewall 731 of the inner tube 73 to limit the displacement of the loofah 74.
The specific steps of the exhaust gas treatment process in this embodiment are as follows:
step one, cooling: the exhaust gas is sucked and pressed into the cooling device 1 by the high-pressure fan 2 for cooling;
Step two, reducing treatment: passing the cooled exhaust gas through a reducing treatment pipeline, adsorbing by a loofah sponge 74 filled in the reducing treatment pipeline, and discharging;
step three, micro-processing: the waste gas is introduced into a multistage micro-processing device 5 formed by connecting a plurality of water tanks in series, and is discharged after being fully contacted with water 6 or processing liquid in the water tanks.
Step four, post-treatment: the exhaust gas is discharged from the discharge port 5c, enters the exhaust device for exhaust gas treatment, and is discharged after passing through the inner pipe 73, the middle pipe 72, and the outer pipe 71 in this order.
Example 4
This embodiment differs from embodiment 1 in that: the air inlet 5a of the cooling device 1 is provided with a spraying device which comprises a spraying box, the front side and the rear side of the spraying box are respectively provided with an air inlet 5a and an air outlet 5b, and the air inlet 5a of the spraying box is connected with a centrifugal fan. The centrifugal fan is used for sucking waste gas generated by production equipment into the spray box for spray treatment.
The specific steps of the exhaust gas treatment process in this embodiment are as follows:
Step one, spraying, namely introducing the waste gas into a spraying device, and primarily settling large particulate matters and water-soluble matters in the waste gas, so as to reduce the content of the particles in the waste gas and reduce the temperature of the waste gas;
Step two, cooling: the exhaust gas is sucked and pressed into the cooling device 1 by the high-pressure fan 2 for cooling;
step three, reducing treatment: passing the cooled exhaust gas through a reducing treatment pipeline, adsorbing by a loofah sponge 74 filled in the reducing treatment pipeline, and discharging;
step four, micro-processing: the waste gas is introduced into a multistage micro-processing device 5 formed by connecting a plurality of water tanks in series, and is discharged after being fully contacted with water 6 or processing liquid in the water tanks.
Based on the above, the invention provides a waste gas treatment device and process, which treat waste gas generated in industrial production through three devices and treatment processes of a cooling device 1, a waste gas treatment pipeline 3 and a micro-treatment device 5 to enable the waste gas to reach the standard capable of being directly discharged, and the adopted adsorption material, namely the loofah sponge 74, has strong adsorption capacity, is renewable and can be recycled, and the treatment process is simple and convenient to operate, so that the cost of waste gas treatment is greatly reduced, thereby reducing the atmospheric pollution and improving the living and living environment.
It will be appreciated by those skilled in the art that the present invention can be carried out in other embodiments without departing from the spirit or essential characteristics thereof. Accordingly, the above disclosed embodiments are illustrative in all respects, and not exclusive. All changes that come within the scope of the invention or equivalents thereto are intended to be embraced therein.
Claims (11)
1. Exhaust gas treatment equipment, its characterized in that: the device comprises a high-pressure fan, a cooling device, an exhaust gas treatment pipeline and a micro-treatment device which are communicated, wherein loofah sponge is stuffed in the exhaust gas treatment pipeline; the waste gas treatment pipeline comprises a feeding pipe, a plurality of middle pipes and a discharging pipe which are sequentially communicated, the pipe diameter of each middle pipe is smaller than that of the feeding pipe and the discharging pipe, an air inlet is formed in one end of the feeding pipe, an air outlet is formed in one end of the discharging pipe, the air outlet of the waste gas treatment pipeline is connected with a micro-treatment device, the micro-treatment device comprises at least three water tanks, a certain volume of water or waste gas treatment liquid is filled in each water tank, the water tanks are communicated with the waste gas treatment pipeline through pipelines, the water tanks are communicated with the water tanks, the inlet pipeline is inserted below the liquid level, and the outlet pipeline is located above the liquid level.
2. The exhaust gas treatment device of claim 1, wherein: the number of the middle pipes is three, and the middle pipes are arranged in a triangular shape.
3. The exhaust gas treatment device of claim 1, wherein: the exhaust device is arranged at the air outlet of the waste gas treatment pipeline or the air outlet of the cooling device or the air outlet of the micro-treatment device.
4. The exhaust gas treatment device of claim 3, wherein: the discharger comprises an inner pipe, a middle pipe and an outer pipe with diameters sequentially increased, wherein two ends of the inner pipe are opened, and loofah sponge is stuffed in the inner pipe; the bottom end of the middle pipe is opened and sleeved on the inner pipe, and the top end of the middle pipe is closed; the outer pipe is sleeved on the inner pipe and wraps the middle pipe, the bottom end of the outer pipe is in sealing and fixed connection with the side wall of the inner pipe, an opening is formed in the top of the outer pipe and communicated with the outside, and waste gas discharged from the air outlet is discharged after passing through the inner pipe, the middle pipe and the outer pipe in sequence.
5. The exhaust gas treatment device of claim 1, wherein: the inlet pipe and the outlet pipe are arranged side by side, and two ends of the middle pipe are respectively communicated with one ends of the inlet pipe and the outlet pipe, which are not opened.
6. The exhaust gas treatment device of claim 5, wherein: the size of the air inlet is smaller than the pipe diameter of the inlet pipe, and the size of the air outlet is smaller than the pipe diameter of the outlet pipe.
7. The exhaust gas treatment device of claim 1, wherein: the side wall or the top of the cooling device is provided with an air inlet and an air outlet, and the air outlet of the cooling device is connected with a waste gas treatment pipeline; the cooling device mainly comprises a cooling box body and a cooling coil; the cooling coil pipe is arranged in the cooling box body, and the size of the cooling coil pipe is matched with that of the cooling box body; the inlet and the outlet of the cooling coil are fixed and led out on the top or the side wall of the cooling box body, and the cooling coil is not communicated with the inside of the cooling box body.
8. The exhaust gas treatment device of claim 1, wherein: an anti-overflow baffle plate is arranged below the tail end of the air outlet pipeline in the water tank, and a plurality of thin connecting rods of the anti-overflow baffle plate are fixed at the tail end of the pipeline.
9. The exhaust gas treatment device of claim 7, wherein: and a spraying device is arranged at the air inlet of the cooling device or the high-pressure fan.
10. The exhaust gas treatment device of claim 9, wherein: the spraying device comprises a spraying box, wherein the front side and the rear side of the spraying box are respectively provided with an air inlet and an air outlet, and the air inlet is connected with a centrifugal fan.
11. An exhaust gas treatment process of an exhaust gas treatment device according to claim 1, characterized by comprising the steps of:
Step one, cooling: sucking and pressing the waste gas into a cooling device through a high-pressure fan to cool;
Step two, reducing treatment: allowing the cooled waste gas to pass through a reducing treatment pipeline, and discharging the waste gas after being adsorbed by loofah packed in the reducing treatment pipeline;
step three, micro-processing: the waste gas is introduced into a multistage micro-processing device formed by connecting a plurality of water tanks in series, so that the waste gas is fully contacted with water or processing liquid in the water tanks and then is discharged.
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| CN107754553A (en) | 2018-03-06 |
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