CN204261518U - The board-like Water curtain machine of fine ga(u)ge screen - Google Patents
The board-like Water curtain machine of fine ga(u)ge screen Download PDFInfo
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- CN204261518U CN204261518U CN201420567817.2U CN201420567817U CN204261518U CN 204261518 U CN204261518 U CN 204261518U CN 201420567817 U CN201420567817 U CN 201420567817U CN 204261518 U CN204261518 U CN 204261518U
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- sieve
- water curtain
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- curtain machine
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Abstract
The utility model belongs to environmental protection technical field, and object improves the purification efficiency of Water curtain machine, reduces pressure drop and the energy consumption of system.The board-like Water curtain machine of a kind of fine ga(u)ge screen, comprise water curtain plate, sieve-plate tower, water tank, described sieve-plate tower comprises at least one piece of sieve plate, spray thrower and overflow device.Described spray thrower is located at the below of sieve plate, and the absorbing liquid of ejection mixes with waste gas, and upwards flow and pass pore sieve plate, above sieve plate, forming bubble level, waste gas is upwards discharged under fan action, and pollutant absorbed liquid is caught or flowed into water tank after absorbing.The present invention adopts feed liquid way under micro channel sieve plate and plate, and form biphase gas and liquid flow through micro channel, the bubble diameter of generation is little, significantly increase gas liquid interfacial area, enhance mass transport process, the purification efficiency of Water curtain machine can be improved, reduce pressure drop and the energy consumption of system.Structure of the present invention is simple, stable operation, be convenient to safeguard.
Description
Technical field
The invention belongs to environmental protection technical field, the apparatus and method of particularly a kind of industrial waste gas purifying process, are applied to the Water curtain machine of the industries such as spraying, printing and dyeing, metallurgy, and the spray painting room of use water curtain dust collection method, complete set of equipments and production line.
Background technology
Wet dust removal is a kind of conventional high-effective dust-removing equipment, utilizes the particle in drop captured gas, and to reach the object of purification dust-laden exhaust gas, its performance depends primarily on the way of contact of gas phase and liquid phase, contact area and time of contact.
Water curtain machine utilizes water to catch coating cloud, be made up of air exhausting device, water supply installation, trapping coating cloud cascade and spray equipment, moisture separator, air channel etc., be widely used in the exhaust-gas treatment of the spraying process of the industries such as household electrical appliances, vehicle, metal and plastic products processing, the air-treatment particularly containing coating cloud.During Water curtain machine work, by water pump, the water extraction in water tank is raised to the overflow groove at top, overflows on water curtain plate and form water curtain shape liquid film; The waste gas such as coating cloud to the flowing of water curtain plate direction, strike the liquid film on water curtain plate surface and are adhered to, then being washed away by the cascade that water curtain plate flows down under fan action, then by discharging after the Multi-stage water screen interception purification of water wash zone.
Water curtain machine washes away the technique and version basic simlarity of removing coating cloud by cascade absorption and water curtain, but has nothing in common with each other in the mode that washing section is thereafter purified further by cascade.Common fountain process for purifying, is sprayed downwards by spray head, atomising head after relying on the power of water pump water extraction to be risen, or is sprayed at and baffle plate forms cascade flows down, and air flows from bottom to top, with liquid phase counter current contacting under blower fan suction.Operating condition is gas flow rate 0.5 ~ 2m/s, water consumption 0.5 ~ 1.5L/m3, the pressure loss 100 ~ 500Pa, and its structure is simple, and resistance is little, but equipment is huge, and water consumption is large, and efficiency of dust collection is lower.Another kind of auto-excitation type process for purifying, after rocket motor impacts the water surface downwards, evokes a large amount of sprays by the throttling of S shape passage, due to the collision between grit and drop, interception and cohesion, dusty gas is purified.Operating condition is gas flow rate 10 ~ 20m/s, water consumption 0.05 ~ 0.1L/m3, the pressure loss 1000 ~ 1500Pa, and efficiency of dust collection can reach 95%, its compact conformation, and floor space is little, and load adaptability is good, and water consumption is few, but the pressure loss is larger.Therefore, existing Water curtain machine is often difficult in disposal ability, between purification efficiency and operation energy consumption take into account, and needs to be optimized process program, improves purifying property.
Sieve-plate tower washer is common bubbling type washer, a large amount of pore air feed that column plate distributes passes through mutually, the bubble level of gas-liquid contact on column plate carries out, liquid phase is sprayed downwards from tower top by water pump pumps, air-flow is through forming a large amount of bubble during liquid layer and constantly breaking and upgrade, in bubbling area by under dust catching, the normal multilayer column plate that adopts is to improve purification efficiency.Operating condition is gas flow rate 1 ~ 3m/s, water consumption 0.1 ~ 0.3L/m3, the pressure loss 300 ~ 1000Pa.Sieve-plate tower is divided into aperture sieve plate (3 ~ 8mm) and macroporous plate (10 ~ 25mm) by aperture.Aperture sieve plate easily blocks, and is not suitable for processing feed liquid that is dirty, tough and band solids; Macroporous plate is easy-to-leak liquid then, and the operating pressure of requirement is high, and mass-transfer efficiency is also lower.Sieve-plate tower has taken into account processing flux, purifying property and operation energy consumption preferably, but its structure compared with complicated, operating flexibility is little, installation requirement is high, is therefore seldom applied on Water curtain machine.
Summary of the invention
Therefore, the present invention is for solving the problem and proposing, and its objective is provides a kind of novel fine ga(u)ge screen board-like Water curtain machine, gas liquid contacting efficiency can be enlarged markedly, improve the purification efficiency of Water curtain machine, reduce pressure drop and the energy consumption of system, its structure is simple, stable operation, be convenient to safeguard.
The technical scheme that the present invention takes, is the board-like Water curtain machine of a kind of fine ga(u)ge screen, comprises water curtain plate, sieve-plate tower, water tank, and described sieve-plate tower comprises inlet scoop, exhaust outlet, bubbler, at least one block of column plate and overflow device, it is characterized in that:
1) top of described water curtain plate is provided with tank, and absorbing liquid drenches and flows down on water curtain plate after being transported to tank by water pump;
2) described inlet scoop is located at middle part and/or the below of described water curtain plate, and waste gas, under the swabbing action of blower fan, enters the bottom of described sieve-plate tower from inlet scoop, entrance height is higher than the liquid level of sieve-plate tower;
3) described bubbler is located at the below of described column plate, upwards and/or side direction ejection absorbing liquid.
Especially, described sieve plate is pore sieve plate, also claims honeycomb screen cloth, by sheet metal or ceramic fiber sheet molding or sheet metal punch forming or ceramic post sintering shaping, be the screen cloth that there is certain altitude, spread all over micro channel.
Described overflow device is at least one overflow pipe, or is located at the overflow launder at described sieve plate edge; The overflow area sectional area formed is 0.05 ~ 0.2 with the ratio of column plate sectional area.
Described bubbler is provided with adjustable spray head, can regulate diameter and the jetting height of liquid droplets, makes drop be ejected into position bottom the sieve plate, is flowed through screen cloth by airflow entrainment from bottom to top.
Mix with the waste gas entered from inlet scoop from the absorbing liquid of bubbler ejection, form gas-liquid mixture, jointly upwards flow and pass column plate under fan action, above column plate, produce a large amount of bubble and constantly break and coalescence, form bubble level.And then absorbing liquid is from overflow device overflow stream to the below of column plate, and waste gas upwards discharges sieve-plate tower under fan action.Pollutant contained in waste gas when contact with absorbing liquid, after absorbed liquid is caught or absorbed, with in absorbing liquid inflow water tank.
The technical scheme that the present invention takes, described sieve-plate tower is provided with level governor, can the levelness of Field adjustment column plate when mounted, during to ensure to run column plate liquid level everywhere or bubble level height consistent.Further, the cross section of described sieve-plate tower is rectangle, and described column plate, from the plug-type installation of the side direction of sieve-plate tower, is convenient to install, regulate and dismounting.When screen surface dirty, fouling occurs and blocks, screen cloth can be taken out from sieve-plate tower and carry out cleaning or changing.
Compared with prior art, the advantage of sieve-board type Water curtain machine provided by the invention is:
1, adopt feed liquid way under micro channel sieve plate and plate, form biphase gas and liquid flow through micro channel, the bubble diameter of generation is little, significantly increases gas liquid interfacial area, enhances mass transport process.
2, a large amount of bubble carries out continuous erosion to sieve aperture at a high speed, and it is dirty stifled to be not easy to produce fouling.
3, the levelness of screen cloth can Field adjustment, and screen cloth is easy to dismounting, is convenient to in-site installation and maintenance.
Accompanying drawing explanation
Fig. 1 is the schematic cross sectional view of the pore sieve plate Water curtain machine of embodiment.
Fig. 2 is the cross section view of the A-A ' line along Fig. 1.
Fig. 3 is the structural representation of the pore sieve plate of embodiment.
Symbol description:
1, cascade district, 2, sieve-plate tower, 3, blower fan, 4, water pump, 11, tank, 12, water curtain plate, 13, water leg, 14, inlet scoop, 15, water tank, 21, air inlet, 22, exhaust outlet, 23, bubbler, 24, pore sieve plate, 25, overflow plate, 26, bubble level, 27, overflow launder
Detailed description of the invention
The explanation of reference accompanying drawing and following embodiment, is appreciated that object of the present invention, feature and effect.
The board-like Water curtain machine of fine ga(u)ge screen as shown in Figure 1, is divided into cascade district 1 and sieve-plate tower 2.Cascade district 1 comprises water curtain plate 12, be arranged on tank 11 above water curtain plate 12, be arranged on the water leg 13 below water curtain plate 12, the inlet scoop 14 of the middle part being arranged on water curtain plate 12 and/or below, be arranged on the water tank 15 of bottom; Sieve-plate tower 2 comprises air inlet 21, exhaust outlet 22, bubbler 23, column plate 24 and overflow device 25; Water curtain machine is also furnished with blower fan 3, water pump 4 and auxiliary piping.
Water or other absorbing liquid are arranged at the bottom of sieve-plate tower 2.Air inlet 21 be positioned at sieve-plate tower below, higher than the liquid level at the bottom of tower.When the sectional area of sieve-plate tower is larger, gas distributor is set at air inlet, the air inlet uniformity distribution of Shi Tanei center and surrounding.
In sieve-plate tower, one or more layers column plate 24 is installed.Described column plate 24 is pore sieve plates, and it has certain altitude, spreads all over a large amount of micro channels, and its structural parameters are height 3 ~ 30mm, average pore size 0.5 ~ 5mm, and percent opening is 0.25 ~ 0.9.Further, the preferred structure parameter of pore sieve plate is height 10 ~ 20mm, average pore size 1 ~ 3mm, and percent opening is 0.5 ~ 0.8.According to Chinese Engineering Standardization association criterion CECS97:97, gas produces by porous media the gas diffuser that diameter is greater than 3mm bubble in the liquid phase and is called middle macropore diffuser, produces the efficient gas disperser that diameter is less than 3mm bubble in the liquid phase and is called microporous diffuser.The bubble diameter that micropore gas distributor produces is little, substantially increases gas liquid interfacial area, enhances mass transport process.
As shown in Figure 2 and Figure 3, column plate 24 is provided with overflow device, the overflow launder 27 that the overflow plate 25 being such as located at column plate edge is formed, or is located at least one overflow pipe on column plate, and overflow device exceeds column plate certain altitude, for the overflow of absorbing liquid.Overflow device in the present embodiment, is provided at the overflow plate 25 of pore sieve plate both sides, and the overfall of upper end higher than sieve plate 10 ~ 50mm, and has many V-notch, and the sectional area of overflow area is 0.05 ~ 0.2 with the ratio of the sectional area of column plate.
Bubbler 23 is arranged on the below of sieve plate 24, is provided with multiple adjustable spray head, can regulate diameter and the jetting height of liquid droplets.Distance bottom shower nozzle and column plate is 10 ~ 200mm, and preferred value is 20 ~ 50mm.Absorbing liquid in water tank is pumped to bubbler 23 by water pump 4, upwards or side direction (comprising above interior outside, side or side-lower) eject vaporific fine droplets.Regulate the diameter of liquid droplets and jetting height, make drop be ejected into position bottom sieve plate 24, flowed through screen cloth 24 by airflow entrainment from bottom to top.Spray feed liquid way under this plate, compared with the flush water bath type dust remover of prior art, air velocity and gas phase drag little many, significantly reduce the energy consumption of blower fan.Above described sieve-plate tower top, column plate, be also provided with the downward hydrojet of auxiliary bubbler, to improve liquid-gas ratio, the pressure loss can be reduced, reduce energy consumption.
Absorbing liquid in water tank 15 is pumped in tank 11 by water pump 4, drenches and flows down on water curtain plate 12.Due to the swabbing action of blower fan 3, the waste gas that spraying operation produces the compositions such as a large amount of coating cloud, dust, flue gas flows to water curtain plate 12 direction; Fine droplets in waste gas and particle are caught by the drop on water curtain plate 12 and liquid film, after current scour to water leg 13, flow in water tank 15; Waste gas is inhaled in sieve-plate tower 2 from inlet scoop 14.
From the fine droplets that bubbler 23 sprays, with the waste gas entered in tower forms gas-fluid two-phase mixture from air inlet 21, upwards flow and pass column plate 24, and form bubble level 26 above column plate 24.Liquid phase flows back to downwards at the bottom of tower from overflow launder 27 after overflowing the overflow plate 25 of column plate 24 both sides; Gas phase after purification upwards discharges sieve-plate tower from exhaust outlet 22.Biphase gas and liquid flow mainly passes through with micro air bubble form through during micro channel, thus has very large contact area and very high mass transfer efficiency.Further, the bubble level of gas-liquid two-phase above column plate forms a large amount of bubble and constantly breaks and upgrade, and dusty gas is purified.
The sieve-board type absorption tower of prior art is generally gas-liquid counter current operation, and top is located at by bubbler, and liquid sprays the column plate of the top downwards, the overflow of block-by-block column plate and under.The bubble level of gas-liquid contact only on column plate carries out, and substantially gas-liquid contact and mass transfer do not occur in the sieve aperture of column plate, aperture is generally 3 ~ 25mm.The technical scheme that the present embodiment provides, column plate 24 forms by having certain thickness micro channel, and bubbler 23 is located at the below of column plate, and the drop of injection is carried secretly by gas from bottom to top, following current through after the micro channel of column plate 24, then forms bubble level 26 above column plate 24.Because the gas liquid ratio of scrubbing tower is high, biphase gas and liquid flow mainly passes through with micro air bubble form through during micro channel, thus has very large contact area and very high mass transfer efficiency.In addition, although the aperture of each micro channel is very little, because pitch of holes is very little, on the contrary higher than the column plate of prior art, the pressure drop of whole column plate is not high for percent opening (on sieve plate the gross area of sieve aperture and the ratio of aperture area area).
In prior art, column plate is arranged on sieve-plate tower inside, mutually supports fastening with other structural members, cannot regulate levelness, causes the liquid level above column plate or bubble level height difference, also different to the flow resistance of gas.Like this, gas flow is very uneven through the distribution of column plate and bubble level, and major part flows through from the region that liquid level lower resistance is little, will have a strong impact on detergent power and the purification efficiency of sieve-plate tower.In addition, if dirty bridging dirt occurs column plate, be difficult to carry out cleaning or changing.With prior art gas with continuous phase by compared with the sieve aperture of column plate, in the present invention, a large amount of bubble is by sieve aperture, and what continue sieve aperture with high flow velocities washes away, and it is dirty stifled to be not easy to produce fouling.
The technical scheme that the present embodiment is taked, the cross section of described sieve-plate tower 2 is rectangle.As shown in Figure 2, described column plate 24, from the plug-type installation of the side direction of sieve-plate tower 2, is dismantled in using at any time easily, is convenient to install, regulate and cleaning.When screen surface dirty, fouling occurs and blocks, screen cloth can be taken out from sieve-plate tower and carry out cleaning or changing.The column plate of described sieve-plate tower is also provided with adjustable support screw, just can the levelness of Field adjustment column plate when mounted by the height that regulates support screw, during to ensure operation column plate liquid level everywhere or bubble level height consistent.
The board-like Water curtain machine of the fine ga(u)ge screen that the present embodiment provides, structure is simple, stable, manufactures, debugging and easy to maintenance; Purification efficiency is very high, can reach 99% to the clearance of coating cloud drop, can reach 98% to the clearance of fine dust, can reach 90% to the clearance of solubility VOCs; Water consumption 0.1 ~ 0.3L/m3, the pressure loss 100 ~ 500Pa, fan static pressure is low, has effectively taken into account Water curtain machine at disposal ability, purification efficiency and operation energy consumption.
Claims (10)
1. the board-like Water curtain machine of fine ga(u)ge screen, comprises water curtain plate, sieve-plate tower, water tank, and described sieve-plate tower comprises inlet scoop, exhaust outlet, bubbler, at least one block of column plate and overflow device, it is characterized in that: described bubbler is located at the below of described column plate.
2. the board-like Water curtain machine of fine ga(u)ge screen according to claim 1, it is characterized in that: described bubbler upwards and/or side direction hydrojet, the liquid of ejection forms gas-liquid mixture with the waste gas entering sieve-plate tower from described inlet scoop, upwards flow and pass described column plate, bubble level is formed above column plate, absorbing liquid is from overflow device overflow stream to the below of column plate, and waste gas upwards discharges sieve-plate tower.
3. the board-like Water curtain machine of fine ga(u)ge screen according to claim 1, is characterized in that: described column plate is pore sieve plate, and its structural parameters are height 3 ~ 30mm, average pore size 0.5 ~ 5mm, percent opening 0.25 ~ 0.9.
4. the board-like Water curtain machine of fine ga(u)ge screen according to claim 1, is characterized in that: the structural parameters of described column plate are height 10 ~ 20mm, average pore size 1 ~ 3mm, and percent opening is 0.5 ~ 0.8.
5. the board-like Water curtain machine of fine ga(u)ge screen according to claim 1, is characterized in that: described bubbler is provided with adjustable spray head, can regulate diameter and the jetting height of liquid droplets.
6. the board-like Water curtain machine of fine ga(u)ge screen according to claim 1, is characterized in that: the distance bottom the shower nozzle of described bubbler and column plate is 10 ~ 200mm.
7. the board-like Water curtain machine of fine ga(u)ge screen according to claim 1, is characterized in that: the distance bottom the shower nozzle of described bubbler and column plate is 20 ~ 50mm.
8. the board-like Water curtain machine of fine ga(u)ge screen according to claim 1, is characterized in that: above described sieve-plate tower top, column plate, be provided with auxiliary bubbler.
9. the board-like Water curtain machine of fine ga(u)ge screen according to claim 1, is characterized in that: described sieve-plate tower is provided with level governor, can regulate the levelness of column plate.
10. the board-like Water curtain machine of fine ga(u)ge screen according to claim 1, is characterized in that: the cross section of described sieve-plate tower is rectangle, and described column plate is from the plug-type installation of the side direction of sieve-plate tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420567817.2U CN204261518U (en) | 2014-09-26 | 2014-09-26 | The board-like Water curtain machine of fine ga(u)ge screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420567817.2U CN204261518U (en) | 2014-09-26 | 2014-09-26 | The board-like Water curtain machine of fine ga(u)ge screen |
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| CN204261518U true CN204261518U (en) | 2015-04-15 |
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|---|---|---|---|
| CN201420567817.2U Expired - Fee Related CN204261518U (en) | 2014-09-26 | 2014-09-26 | The board-like Water curtain machine of fine ga(u)ge screen |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104258667A (en) * | 2014-09-26 | 2015-01-07 | 常州市西屋自动化有限公司 | Fine-mesh sieve plate type water curtain machine |
| CN113117408A (en) * | 2019-12-30 | 2021-07-16 | 湖北金汉江精制棉有限公司 | Steaming waste treatment device |
-
2014
- 2014-09-26 CN CN201420567817.2U patent/CN204261518U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104258667A (en) * | 2014-09-26 | 2015-01-07 | 常州市西屋自动化有限公司 | Fine-mesh sieve plate type water curtain machine |
| CN104258667B (en) * | 2014-09-26 | 2016-08-24 | 常州市西屋自动化有限公司 | The board-like Water curtain machine of fine ga(u)ge screen |
| CN113117408A (en) * | 2019-12-30 | 2021-07-16 | 湖北金汉江精制棉有限公司 | Steaming waste treatment device |
| CN113117408B (en) * | 2019-12-30 | 2023-10-20 | 湖北金汉江精制棉有限公司 | Digestion waste treatment device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20170926 |