CN113599957A - Small-sized agricultural flue gas cyclone-water mist two-stage purification equipment and method - Google Patents
Small-sized agricultural flue gas cyclone-water mist two-stage purification equipment and method Download PDFInfo
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- CN113599957A CN113599957A CN202111087083.9A CN202111087083A CN113599957A CN 113599957 A CN113599957 A CN 113599957A CN 202111087083 A CN202111087083 A CN 202111087083A CN 113599957 A CN113599957 A CN 113599957A
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Abstract
本发明属于环境工程烟气处理技术领域，尤其涉及一种农居烟道气旋风‑水雾两级净化小型设备及方法。所述设备包括中空旋风分离外筒体、水雾除尘单元、排渣单元、进气管道和水气输出管道，所述水雾除尘单元包括嵌套在中空旋风分离外筒体内部的中空内筒体和喷雾装置；所述进气管道与中空旋风分离外筒体相连通，穿过中空旋风分离外筒体的水气输出管道的一端与中空内筒体连通，另一端与水回用单元连通；所述排渣单元与中空旋风分离外筒体底部相连接，所述中空内筒体包括上下两部分，所述上部分和下部分之间留有一定距离的空隙。本发明将旋风除尘和水雾除尘两种除尘方式结合在一起，能够实现细颗粒物和粗颗粒物同步的高效去除率。
The invention belongs to the technical field of environmental engineering flue gas treatment, and in particular relates to a small equipment and method for two-stage purification of farmhouse flue gas cyclone-water mist. The equipment includes a hollow cyclone outer cylinder, a water mist dedusting unit, a slag discharge unit, an air inlet pipe and a water gas output pipe, and the water mist dedusting unit includes a hollow inner cylinder nested inside the hollow cyclone outer cylinder. body and spray device; the air inlet pipe is communicated with the hollow cyclone outer cylinder body, one end of the water gas output pipe passing through the hollow cyclone separation outer cylinder body is communicated with the hollow inner cylinder body, and the other end is communicated with the water reuse unit ; The slag discharge unit is connected with the bottom of the hollow cyclone outer cylinder, the hollow inner cylinder includes upper and lower parts, and a certain distance is left between the upper part and the lower part. The invention combines the two dust removal methods of cyclone dust removal and water mist dust removal, and can realize the high-efficiency removal rate of fine particles and coarse particles synchronously.
Description
Technical Field
The invention relates to the technical field of environmental engineering flue gas treatment, in particular to small equipment and a method for two-stage purification of agricultural flue gas by cyclone and water mist.
Background
Although the energy structure of China is continuously improved, biomass such as straw, firewood and the like is still used as kitchen fuel in rural areas. Biomass is reported to account for approximately 40% of the energy structures currently in rural areas. The research shows that the contribution rate of the biomass combustion to PM2.5 in the atmosphere of a rural area in Shandong is as high as 18.4%, the biomass combustion is one of the main sources of PM2.5 emission in the rural area, and the increase of the PM2.5 concentration caused by the smoke emission of the chimney poses certain threat to the health of people. Therefore, effectively removing the smoke particles of the chimney plays an extremely important role in improving the rural atmospheric environment.
Several common chimney dust removing methods currently used include cyclone dust removal, cloth bag dust removal, electrostatic dust removal, water curtain dust removal and the like. The cyclone dust removal is a dust removal device which makes dust-containing airflow rotate and separates particles from the airflow by using the action of centrifugal force. The dusty gas flow entering the cyclone dust collector rotates from top to bottom along the inner wall of the cylinder body, and a small amount of gas moves to the central area along the radial direction. When most of the rotating airflow reaches the bottom of the cone, the rotating airflow rotates upwards along the axis and is finally discharged through the air outlet pipeline. In the process, the particles contained in the air flow are settled on the outer wall under the action of centrifugal force, and the particles reaching the outer wall fall into the ash hopper along the wall surface under the combined action of the air flow and gravity. Cyclone dust removal is typically used to remove coarse particles and is less effective at removing fine particles. The water curtain dust removal method is one of wet dust removal methods, and the water curtain dust removal method enables dust-containing gas to be fully contacted with a water curtain, and washes particulate matters through the actions of inertial collision, interception, condensation and the like between the particulate matters and liquid drops, so that the gas is purified. Therefore, water curtain dusting is often used to remove fine particulate matter.
Some chimney flue gas dust removal devices have been developed in the current market, but still have the problems of too large water amount, complex device, poor removal effect, too high operation cost and the like.
The utility model discloses a special flue gas dust removal chimney of old-fashioned top of a kitchen range is disclosed like publication No. CN205627425U, including the absorption tank, spray tank, waste residue storage jar, distillation plant, shower nozzle, exhaust fan, active carbon adsorption column, hang plate, filter and delivery port. The top of the absorption tank of the chimney is a spraying tank, the bottom of the absorption tank is a waste residue storage tank, a spray head is installed in the spraying tank, and an exhaust fan is installed in the absorption tank. This chimney utilizes the exhaust fan to send the flue gas to spraying the jar, and the shower nozzle that sprays in the jar can be followed the dust particle in the flue gas and is come out from the flue gas, and the rethread hang plate discharges waste water to the delivery port, and the poisonous and harmful substance in the further filtration flue gas of rethread active carbon adsorption column. The utility model discloses a patent adopts the wet process to get rid of the particulate matter, and it is better to get rid of the effect, but the operation of device need consume a large amount of water resources, and the device is complicated, the installation and use not convenient for.
As another patent of the invention with publication number CN 102261665 a, an environmental protection chimney with a function of odor removal is disclosed, the main body of which is a hollow tower body, the inner side of the top of the tower body is provided with a cylindrical filter layer, the filter layer comprises a filter screen and a filter material filled in the filter screen; the top edge of the tower body is connected with an umbrella-shaped chimney cap in a closed mode through an exhaust grid, an atomization smell removal device is arranged below the chimney cap, the atomization smell removal device is connected with a smell removal agent box provided with plant extracts with smell removal functions through a feeding pipe arranged along the tower body, and an atomization controller for driving the feeding pipe to supply materials is arranged on the smell removal agent box. The invention can eliminate large-particle smoke dust through the structure of the filter screen, and can remove small-molecule substances with pungent odor through spraying atomized deodorant, but the invention needs to make greater modification on the original chimney when in application, and the modification difficulty is greater; and the filter screen structure of the device is only suitable for removing large particles, and the removing effect on fine particles is not ideal.
In addition, as the prior art of publication No. CN104548811A, a cyclone-type water curtain dust removal air purifier is disclosed, which comprises a shell and a fan, wherein a water absorption layer for absorbing water is arranged on the inner wall of the shell, so that dust entering the shell under the action of the fan directly impacts the water absorption layer under the action of centrifugal force, and is captured by aqueous solution on the surface of the water absorption layer. The device can get rid of the fine particles in the air, and simple structure, and dust collection efficiency is high. However, the water absorbing layer of the device needs to maintain proper moisture content, and moisture evaporation is inevitable under natural conditions, so that water needs to be supplemented to the water absorbing layer frequently, and the device is not provided with a water supplementing module. Therefore, after the device is used for a period of time, the water absorption layer of the device needs to be replaced, and the water absorption layer covers the whole shell, so that the replacement is inconvenient; in addition, the device is applicable to the air that purifies particulate matter concentration lower, and the particulate matter concentration in the chimney flue gas is higher, is not suitable for purifying the chimney flue gas.
Based on the defects of the prior art, it is necessary to invent a new and efficient device and method.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the defects that cyclone dust removal is generally used for removing coarse particles in the flue gas treatment technology, the fine particle removal effect is poor, the water mist dust removal effect is good, but the water requirement is large, the cyclone dust removal and the water mist dust removal are combined together through a simple equipment structure, most of coarse particles are removed through the cyclone dust removal mode, most of fine particles are removed through an internal water mist dust removal unit, the fine particles and the coarse particles are treated in different modes respectively, and the synchronous high-efficiency removal rate of the fine particles and the coarse particles can be realized.
The invention further aims to realize gas-liquid separation of the water mist adsorbed with the fine particles and the purified gas, and the gas-liquid separation is realized by arranging a static mixer in a water-gas output pipeline to ensure that the small-particle water mist adsorbed with the fine particles is gathered into large-particle water drops in the static mixer.
2. Technical scheme
The invention provides a two-stage purification device of agricultural flue gas cyclone-water mist, which comprises a hollow cyclone separation outer cylinder, a water mist dust removal unit, a slag discharge unit, an air inlet pipeline and a water vapor output pipeline, wherein the water mist dust removal unit comprises a hollow inner cylinder and a spraying device which are nested in the hollow cyclone separation outer cylinder; the air inlet pipeline is communicated with the hollow cyclone separation outer cylinder, one end of a water-gas output pipeline penetrating through the hollow cyclone separation outer cylinder is communicated with the hollow inner cylinder, and the other end of the water-gas output pipeline is communicated with the water reuse unit; the slag discharging unit is respectively connected with the bottom of the hollow cyclone separation outer barrel and the bottom of the hollow inner barrel, the hollow inner barrel comprises a hollow inner barrel upper part and a hollow inner barrel lower part, and a gap with a certain distance is reserved between the hollow inner barrel upper part and the hollow inner barrel lower part, so that smoke can conveniently enter the hollow inner barrel. Preferably, the hollow cyclone separation outer cylinder body is provided with two holes with the same radius, and the two holes are respectively connected with the air inlet pipeline and the water vapor output pipeline; the water and gas output pipeline is connected with the holes on the upper half side surfaces of the hollow inner cylinder and the hollow outer cylinder, the side wall of the hollow inner cylinder is provided with a hole, the radius of the hole is equal to that of the hole on the hollow cyclone separation outer cylinder, and the holes are positioned on the same horizontal plane so as to be convenient for installing the water and gas output pipeline; the inside of the water-gas output pipeline is provided with a static mixer for gas-liquid separation. The fine particles are upward from the bottom, the water mist is downward from the top, and the fine particles and the water mist cannot be fully mixed before entering the static mixer due to the two streams, and are fully mixed through the static mixer.
Further, the inside of the air inlet pipeline is provided with a smoke concentration sensor, and when the smoke concentration exceeds a set numerical value, the starting device is operated.
Preferably, a fan is further installed in the water-gas output pipeline, and the static mixer is arranged in the water-gas output pipeline and located at the upstream position of the fan.
Preferably, the size of the water mist particles sprayed by the spray nozzle is 1-100 microns, so that the water mist particles are more likely to collide and agglomerate with fine particles.
Preferably, the equipment comprises a water recycling unit, the water-gas output pipeline is connected with the water recycling unit, and the water recycling unit is communicated with the spraying device through a water outlet pipe.
Preferably, the upper part of the hollow inner cylinder body and the lower part of the hollow inner cylinder body are cylinders with the same bottom surface radius.
Preferably, the hollow cyclone separation outer barrel comprises a hollow cyclone separation outer barrel upper part and a hollow cyclone separation outer barrel lower part, the hollow cyclone separation outer barrel upper part is cylindrical, the hollow cyclone separation outer barrel lower part is in a circular truncated cone shape, the radius of the bottom surface of the cylinder is the same as that of the top surface of the circular truncated cone, and the radius of the top surface of the circular truncated cone is larger than that of the bottom surface. The upper part of the hollow cyclone separation outer cylinder body is connected with the lower part of the hollow cyclone separation outer cylinder body through screws, the hollow cyclone separation outer cylinder body is mainly used for removing coarse particles in flue gas, and the upper part of the hollow inner cylinder body and the upper part of the hollow cyclone separation outer cylinder body are both connected with the top plate through threads.
Preferably, the water recycling unit comprises a sewage tank, a filter tank and a water storage tank, wherein the diameter of an opening at the top end of the sewage tank is the same as that of the water gas output pipeline, the bottom end of the water gas output pipeline extends into the inside of the sewage tank, the sewage tank and the filter tank are arranged adjacently, an opening is formed in the middle of one side connected with the sewage tank, the top of the sewage tank is open, a filter layer is paved at the bottom of the sewage tank, the water storage tank is located at the lower part of the sewage tank and the filter tank, and the side wall of the water storage tank is connected with a water outlet pipe.
Preferably, the water recycling unit further comprises a water pump, the spraying device comprises a spray head fixer and a spraying spray head, the water pump is used for conveying water in the water storage tank to the top spraying device through a water outlet pipe, one end of the water outlet pipe is connected with the side face of the water storage tank, the other end of the water outlet pipe is connected with the spray head fixer, the water outlet pipe is connected with the water pump, and the water in the water storage tank is conveyed to the spraying spray head.
Preferably, the spray nozzle fixing device is positioned on the upper surface of the upper part of the hollow cyclone separation outer cylinder body; the top of the spray head fixer is provided with a small hole which is connected with one end of the water outlet pipe; the bottom of the spray head fixer is provided with a plurality of small holes, and each small hole is used for fixing a spray head.
Preferably, the side wall of the top end of the slag discharging unit is provided with a plurality of screw holes, and the screw holes are connected with the lower part of the hollow cyclone separation outer cylinder body through screws; the side wall of the middle part is also provided with a plurality of screw holes which are connected with the lower part of the hollow inner cylinder body through screws; the outer side wall of the slag discharging unit is provided with an external thread, and the slag discharging cover is connected with the main body of the slag discharging unit through the external thread and used for collecting and discharging dust and slag.
Preferably, the hollow inner and outer cylinder bodies, the nozzle fixer, the slag discharge unit, the air inlet pipeline, the water-gas output pipeline, the water storage tank and the water outlet pipe are all made of aluminum alloy materials.
Preferably, the filter layer material comprises PP cotton.
Preferably, the invention provides a two-stage purification method of agricultural flue gas cyclone-water mist, which adopts the small-sized equipment for two-stage purification of agricultural flue gas cyclone-water mist to purify flue gas and comprises the following steps:
A. the smoke enters the equipment, large particles spirally descend along the wall of the hollow cyclone separation outer cylinder body and fall into the slag discharge unit, the smoke containing fine particles enters the hollow inner cylinder body, the fine particles and the water mist enter a water-gas output pipeline under the action of the water mist and the fan, the fine particles and the water mist are mixed into sewage through the static mixer and enter the water reuse unit, and clean gas is discharged from an opening of the sewage tank;
B. and the water body in the water storage tank of the water reuse unit is pressurized and reflows to the top spraying device through the water outlet pipe by the water pump for recycling.
Preferably, the method comprises the following steps:
s1, constructing the cyclone-water mist two-stage purification equipment for treating the rural chimney flue gas according to the above, directly connecting the air inlet pipe with the air outlet of the chimney, and fixing the whole equipment on the wall; a smoke concentration sensor is arranged in the air inlet pipeline, when the smoke concentration does not exceed a set limit value, the whole equipment is in a low-power consumption state, and the water pump, the fan and the spraying device are in a closed state;
s2, when the concentration of the flue gas exceeds a set limit value, the equipment is in an operating state, the water pump, the fan and the spraying device are started, the flue gas enters the equipment along a tangent line, and large particles spirally descend along the wall of the hollow cyclone separation outer cylinder body and fall into a slag discharge unit; the flue gas enters the hollow inner cylinder body from a gap between the upper part of the hollow inner cylinder body and the lower part of the hollow inner cylinder body, under the action of the water mist, the fine particles and the water mist contact and then enter a water-gas output pipeline, are fully mixed into sewage through a static mixer and enter a water recycling unit, and clean gas is discharged from an opening of a sewage tank;
the sewage mixed by the static mixer firstly enters a sewage tank, after reaching a certain height, enters a filter tank through an opening arranged in the middle of the filter tank, and filtered water enters a water storage tank; the water in the water storage tank is pressurized and recycled by the water pump;
s3, when the smoke concentration is reduced to a set limit value, stopping the operation of the equipment, recovering to a low power consumption state, and turning off a water pump, a fan and a spraying device;
s4, after the equipment runs for a period of time, cleaning particles, and replacing PP cotton used for filtering sewage in the filter box.
3. Advantageous effects
Compared with the prior art, the invention has the following beneficial effects:
(1) the agricultural flue gas cyclone-water mist two-stage purification small equipment combines two dust removal modes of cyclone dust removal and water mist dust removal, the outer cylinder body mainly removes most of coarse particles through the cyclone dust removal mode, and most of fine particles are removed through the water mist dust removal unit in the outer cylinder body, so that the coarse particles and the fine particles can be treated in a targeted manner, efficient synchronous treatment is realized, energy consumption is reduced, the agricultural flue gas cyclone-water mist two-stage purification small equipment has a good flue gas filtering effect, and meanwhile, the use of water is greatly reduced.
(2) The water mist is adopted to capture fine particles which are difficult to remove by cyclone dust removal in smoke dust, and compared with the traditional fine particle removal method, the dust removal efficiency is higher, the fine water mist is easier to collide with the fine particles for condensation compared with a water curtain, the water mist and the fine particles are preliminarily mixed in the hollow inner cylinder body, and the water mist captured with the fine particles is fully mixed by further colliding in the static mixer and is gathered into large-particle liquid to flow into the sewage tank, so that the dust removal efficiency is guaranteed, and the problem of gas-liquid separation is solved;
(3) according to the small agricultural flue gas cyclone-water mist two-stage purification equipment, the hollow inner cylinder body is of an upper part and a lower part, so that flue gas can enter the hollow inner cylinder body more conveniently in the process of treatment of the water mist treatment unit, and efficient treatment is realized; the outer barrel of cavity cyclone sets up the structure of two parts about to, and the outer barrel upper portion of cavity cyclone establishes to the cylinder, and the structure of establishing the round platform in the outer barrel lower part of cavity cyclone more does benefit to the coarse grain and gets into along section of thick bamboo wall and arrange the sediment unit, not only makes the collection of coarse grain more high-efficient, convenient dismantlement moreover.
(4) According to the small-sized agricultural residential flue gas cyclone-water mist two-stage purification equipment, the filtering material is arranged on the filtering box to purify sewage, the water recycling unit is arranged, and water is recycled through the water recycling system, so that the waste of water is reduced, and the cost is further effectively reduced.
(5) The small-sized agricultural residential flue gas cyclone-water mist two-stage purification equipment has the advantages that the slag discharge unit is arranged at the bottom, dust can be discharged only by unscrewing the cover after use, and the cleaning is convenient; the device is formed by splicing all the components, is convenient to disassemble and maintain.
(6) According to the small-sized cyclone-water mist two-stage purification method for the flue gas of the agricultural dwelling, when the concentration of the flue gas exceeds a set value, the system can start the fan, the water pump and the spraying device, and is in a closed state when the concentration of the flue gas does not exceed the preset concentration, and clean water used by the spraying device is less than that of a water curtain, so that the loss of electric energy and water resources is reduced, and the operation cost is reduced.
Drawings
FIG. 1 is a front view of the apparatus of the present invention;
FIG. 2 is a schematic perspective view of the apparatus of the present invention;
FIG. 3 is a perspective view of the slag discharging unit;
in the figure, 1, an air inlet pipeline; 2. a water-gas output pipeline; 3. a nozzle holder; 4. the upper part of the outer cylinder body is separated by hollow cyclone; 5. the upper part of the hollow inner cylinder body; 6. the lower part of the outer cylinder body is separated by hollow cyclone; 7. a slag discharge unit; 8. the lower part of the hollow inner cylinder body; 9. a sewage tank; 10. a filter box; 11. a water storage tank; 12. a water outlet pipe; 13. a spray nozzle; 14. a static mixer; 15. a fan.
Detailed Description
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.
It should be noted that the terms "upper", "lower", "left", "right" and "middle" used in the present specification are for the sake of clarity, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
As used herein, the term "about" is used to provide the flexibility and inaccuracy associated with a given term, measure or value. The degree of flexibility for a particular variable can be readily determined by one skilled in the art.
As used herein, at least one of the terms "is intended to be synonymous with one or more of. For example, "at least one of A, B and C" explicitly includes a only, B only, C only, and combinations thereof, respectively.
Concentrations, amounts, and other numerical data may be presented herein in a range format. It is to be understood that such a range format is used merely for convenience and brevity and should be interpreted flexibly to include not only the numerical values explicitly recited as the limits of the range, but also to include all the individual numerical values or sub-ranges encompassed within that range as if each numerical value and sub-range is explicitly recited. For example, a numerical range of about 1 to about 4.5 should be interpreted to include not only the explicitly recited limit values of 1 to about 4.5, but also include individual numbers (such as 2, 3, 4) and sub-ranges (such as 1 to 3, 2 to 4, etc.). The same principle applies to ranges reciting only one numerical value, such as "less than about 4.5," which should be construed to include all of the aforementioned values and ranges. Moreover, such an interpretation should apply regardless of the breadth of the range or feature being described.
Any steps recited in any method or process claims may be executed in any order and are not limited to the order presented in the claims.
Example 1
The embodiment is cyclone-water mist two-stage purification equipment for treating flue gas of a chimney in rural areas in certain China, and the equipment comprises a hollow cyclone separation outer cylinder, a water mist dust removal unit, a slag discharge unit 7, an air inlet pipeline 1, a water vapor output pipeline 2 and a water reuse unit, wherein the water mist dust removal unit comprises a hollow inner cylinder and a spraying device which are nested in the hollow cyclone separation outer cylinder; the air inlet pipeline 1 is communicated with the hollow cyclone separation outer cylinder, one end of a water-gas output pipeline 2 penetrating through the hollow cyclone separation outer cylinder is communicated with the hollow inner cylinder, and the other end of the water-gas output pipeline is communicated with the water reuse unit; and the slag discharging unit 7 is respectively connected with the bottom of the hollow cyclone separation outer cylinder and the bottom of the hollow outer inner cylinder.
The hollow inner cylinder body comprises an upper part and a lower part, and a gap of 20mm is reserved between the upper part 5 of the hollow inner cylinder body and the lower part 8 of the hollow inner cylinder body, so that smoke can conveniently enter the hollow inner cylinder body. Barrel upper portion 5 and barrel lower part 8 are the same cylinder of bottom surface radius in the cavity, and the bottom surface diameter is 80mm, and barrel upper portion 5 is 190mm high in the cavity, and barrel 8 is 240mm high in the cavity.
The hollow cyclone separation outer cylinder body consists of an upper part 4 of the hollow cyclone separation outer cylinder body and a lower part 6 of the hollow cyclone separation outer cylinder body, the upper part 4 of the hollow cyclone separation outer cylinder body is cylindrical and 200mm high, the diameters of the top surface and the bottom surface of the cylinder are both 200mm, the lower part 6 of the hollow cyclone separation outer cylinder body is in a shape of a circular truncated cone and 220mm high, the diameter of the top surface of the circular truncated cone is 200mm, and the diameter of the bottom surface of the circular truncated cone is 100 mm; the upper part 4 of the hollow cyclone separation outer cylinder body and the lower part 6 of the hollow cyclone separation outer cylinder body are connected through screw holes on the side surfaces by screws and are used for removing coarse particles in the flue gas.
The upper part 5 of the hollow inner cylinder body and the upper part 4 of the hollow cyclone separation outer cylinder body are connected through screw holes at the top by screws.
The upper part 4 of the hollow cyclone separation outer cylinder body is provided with two holes A and B with the diameter of 40mm, and the holes A and B are respectively connected with the air inlet pipeline 1 and the water vapor output pipeline 2. Barrel upper portion 5 is opened has a diameter to be 40 mm's hole C in the cavity, and barrel intercommunication in barrel and the cavity is utilized to the one end of aqueous vapor output pipeline 2, hole C and the outer barrel upper portion 4's of cavity whirlwind hole B are located same horizontal plane, and aqueous vapor output pipeline 2 can pass inside the outer barrel of cavity whirlwind separation through hole C and hole B, and aqueous vapor output pipeline 2 other end and sewage case 9 intercommunication install static mixer 14 and fan 15 in the aqueous vapor output pipeline 2, static mixer 14 is located the upstream position of fan 15. In the embodiment, the diameters of the air inlet pipeline 1 and the water vapor output pipeline 2 are both 40 mm.
After gas enters the outer cylinder through the gas inlet pipeline 1, the gas enters the hollow inner cylinder from the hollow cyclone separation outer cylinder, and the treated gas is discharged from the water gas output pipeline 2.
In this embodiment, the spraying device comprises a nozzle fixer 3 and a spraying nozzle 13, the nozzle fixer 3 is located on the upper surface of the upper part 4 of the hollow cyclone separation outer cylinder, the top of the nozzle fixer 3 is provided with a small hole with the diameter of 20mm, the small hole is connected with one end of a water outlet pipe 12, the bottom of the nozzle fixer 3 is provided with three small holes for fixing the three spraying nozzles 13, and a water mist dust removal unit which is composed of the nozzle fixer 3, the spraying nozzle 13 and the hollow inner cylinder is mainly used for removing fine particles in flue gas. The size of the water mist particles sprayed by the spray nozzle is between 1 and 100 mu m, so that the water mist particles are more likely to collide and agglomerate with fine particles.
The water recycling unit comprises a sewage tank 9, a filter tank 10 and a water storage tank 11, the diameter of an opening at the top end of the sewage tank 9 is the same as that of the steam output pipeline 2, the bottom end of the steam output pipeline 2 extends into the inside of the sewage tank 9, the sewage tank 9 and the filter tank 10 are adjacently arranged, an opening is formed in the middle of one side connected with each other, the top of the sewage tank 9 is open, a filter layer is laid at the bottom of the filter tank 10, the water storage tank 11 is located at the lower parts of the sewage tank 9 and the filter tank 10, and the side wall of the water storage tank 11 is connected with a water outlet pipe 12. The other end of the water outlet pipe 12 is connected with the spray head fixing device 3, the water outlet pipe 12 is connected with a water pump, and water in the water storage tank 11 is lifted to the spray head fixing device 3 through the water pump.
Fig. 3 shows a configuration of the slag discharging unit 7, which is connected with the lower part 6 of the hollow cyclone outer cylinder through four screw holes at the upper part using screws, connected with the lower part 8 of the hollow inner cylinder through four screw holes at the lower part using screws, and connected with the main body part of the slag discharging unit 7 through external threads on the side wall of the slag discharging unit 7, and only needs to unscrew the slag discharging cover to discharge the slag when the slag is discharged.
The hollow inner and outer cylinder bodies, the spray nozzle fixing device, the slag discharging unit, the air inlet pipeline, the water vapor output pipeline, the water tank and the water outlet pipe are all made of aluminum alloy materials.
And a fan 15 is arranged in the water-gas output pipeline 2, so that the flue gas subjected to dust removal by water mist is discharged out of the flue gas filtering system. A smoke concentration sensor is arranged in the air inlet pipe, and when the smoke concentration exceeds a set numerical value, the fan 15, the water pump and the spray nozzle 13 are automatically started.
In this embodiment, the operation method of the apparatus includes the following steps:
s1, building a set of cyclone-water mist two-stage purification equipment for treating rural chimney flue gas as described above, directly connecting the air inlet pipe 1 and the chimney, and fixing the whole equipment on the wall;
when the concentration of the flue gas does not exceed the set limit value, the whole equipment is in a low power consumption state, and the water pump, the fan 15 and the spray nozzle 13 are in a closed state;
s2, when the concentration of the smoke exceeds the set limit value, the device is in operation, the water pump, the fan 15 and the spray nozzle 13 are opened, the smoke enters the device along the tangent line, the large particles spirally descend along the wall of the hollow cyclone separation outer cylinder and fall into the slag discharge unit 7, then the smoke enters the hollow inner cylinder from the gap between the upper part 5 of the hollow inner cylinder and the lower part 8 of the hollow inner cylinder, under the action of the water mist and the fan 15, the fine particles and the water mist enter the water vapor output pipeline 2 and fully contact with each other through the static mixer 14 arranged in the water vapor output pipeline 2 to form sewage, the sewage flows into the sewage tank 9, the purified gas is discharged into the atmosphere from the opening at the upper part of the sewage tank 9, when the sewage is accumulated to a certain height, the purified gas flows into the filter tank 10 through the openings at the middle parts of the sewage tank 9 and the filter tank 10 and is filtered through the filter layer at the lower part of the filter tank 10, flows into a water storage tank 11, and water in the water storage tank 11 is lifted to the spray head fixing device 3 through a water outlet pipe 12;
s3, when the concentration of the flue gas is reduced to a set limit value, the device returns to a low power consumption state, and the water pump, the fan 15 and the spray nozzle 13 are closed;
and S4, after running for a period of time, cleaning particles, and replacing PP cotton used for filtering sewage in the filter box 10.
The present invention and its embodiments have been described in detail, without limitation, and the accompanying drawings are only one embodiment of the invention, and the actual structure is not limited thereto, so that those skilled in the art should be able to design the structure and its embodiments similar to the above-mentioned embodiments without departing from the spirit of the invention.
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| CN202010977910.0A CN112076579A (en) | 2020-09-17 | 2020-09-17 | Small-sized equipment and method for cyclone-water curtain two-stage purification of flue gas of agricultural dwelling houses |
| CN2020109779100 | 2020-09-17 |
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| CN202111087083.9A Pending CN113599957A (en) | 2020-09-17 | 2021-09-16 | Small-sized agricultural flue gas cyclone-water mist two-stage purification equipment and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114345056A (en) * | 2021-12-28 | 2022-04-15 | 温芳卉 | Portable intelligent cyclone dust removing equipment |
| CN114405205A (en) * | 2022-02-11 | 2022-04-29 | 青岛云路先进材料技术股份有限公司 | High-temperature gas-solid mixed phase separation equipment |
| CN116988748A (en) * | 2022-10-29 | 2023-11-03 | 黄志文 | Dust-catching device for rock drill and operation method thereof |
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| CN112076579A (en) * | 2020-09-17 | 2020-12-15 | 南京大学 | Small-sized equipment and method for cyclone-water curtain two-stage purification of flue gas of agricultural dwelling houses |
| CN113041824B (en) * | 2021-03-29 | 2024-11-08 | 沈阳博宇科技有限责任公司 | A super gravity desulfurization device for treating low flow flue gas |
| CN115899901B (en) * | 2022-11-07 | 2023-09-15 | 沧州青尚环保科技有限公司 | Water curtain filtering air purifying device |
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| CN112076579A (en) | 2020-12-15 |
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