CN104258667B - 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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- CN104258667B CN104258667B CN201410512450.9A CN201410512450A CN104258667B CN 104258667 B CN104258667 B CN 104258667B CN 201410512450 A CN201410512450 A CN 201410512450A CN 104258667 B CN104258667 B CN 104258667B
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- plate
- sieve
- water curtain
- tower
- fine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/12—Washers with plural different washing sections
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
- Separation Of Particles Using Liquids (AREA)
Abstract
The invention belongs to environmental protection technical field, it is therefore an objective to improve the purification efficiency of Water curtain machine, reduce pressure drop and the energy consumption of system.A kind of board-like Water curtain machine of fine ga(u)ge screen, including water curtain plate, sieve-plate tower, water tank, described sieve-plate tower includes at least one piece of sieve plate, spray thrower and overflow device.Described spray thrower is located at the lower section of sieve plate, and the absorbing liquid of ejection mixes with waste gas, flows up and pass pore sieve plate, forms bubble level above sieve plate, and waste gas is upwards discharged under fan action, flows into water tank after the capture of pollutant absorbed liquid or absorption.The present invention uses feed liquid way under micro channel sieve plate and plate, forms biphase gas and liquid flow and passes micro channel, and 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.Present configuration is simple, stable operation, be easy to safeguard.
Description
Technical field
The invention belongs to environmental protection technical field, the apparatus and method processed particularly to a kind of industrial waste gas purifying, it is applied to
The Water curtain machine of the industries such as spraying, printing and dyeing, metallurgy, and use the spray painting room of 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 particulate matter in liquid droplet capture gas, to reach to purify dust-laden
The purpose of waste gas, its performance depends primarily on gas phase and the way of contact of liquid phase, contact area and time of contact.
Water curtain machine utilizes water to catch coating cloud, air exhausting device, water supply installation, trapping coating cloud cascade and spray equipment, aqueous vapor divide
Constitute from device, air channel etc., be widely used in the spraying process of the industries such as household electrical appliances, vehicle, metal and plastic processing
Exhaust-gas treatment, especially with the air-treatment of coating cloud.During Water curtain machine work, water pump the water in water tank is risen to top
Overflow groove, overflow on water curtain plate formed water curtain shape liquid film；The waste gas such as coating cloud flow to water curtain plate direction under fan action,
Strike the liquid film on water curtain plate surface and be attached, then washed away by the cascade flowed down on water curtain plate, then many by water wash zone
Level cascade intercepts after purifying and discharges.
Water curtain machine is washed away by cascade absorption and water curtain removes the technique of coating cloud and version basic simlarity, but washing behind
Section is had nothing in common with each other by the way of cascade purifies further.Common fountain purifies technique, relies on the power of water pump to be carried by water
Sprayed downwards by spray head, atomising head after Shenging, or be sprayed on baffle plate formation cascade and flow down, air under blower fan aspirates from
Lower and upper flowing, with liquid phase counter current contacting.Operating condition is gas flow rate 0.5～2m/s, water consumption 0.5～1.5L/m3, pressure
Loss 100～500Pa, its simple in construction, resistance is little, but equipment is huge, and water consumption is big, and efficiency of dust collection is relatively low.Another kind is certainly
Swash formula and purify technique, after rocket motor impacts the water surface downwards, evoke substantial amounts of spray, due to grit by the throttling of S-shaped passage
And collision, interception and the cohesion between drop, makes dusty gas be purified.Operating condition is gas flow rate 10～20m/s,
Water consumption 0.05～0.1L/m3, the pressure loss 1000～1500Pa, efficiency of dust collection up to 95%, its compact conformation, floor space
Little, load adaptability is good, and water consumption is few, but the pressure loss is bigger.Therefore, existing Water curtain machine is in disposal ability, purification
Often it is difficult between efficiency and operation energy consumption take into account, needs to be optimized process program, improve purifying property.
Sieve-plate tower scrubber is common bubbling type scrubber, column plate is distributed a large amount of pore supply and passes through mutually, and gas-to-liquid contact is at tower
Bubble level on plate is carried out, and liquid phase is sprayed downwards from tower top by water pump pumps, forms a large amount of bubble not when air-flow is through liquid layer
Break and rupture and update, in bubbling area by under dust catching, frequently with multilamellar column plate 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 by aperture
Sieve plate (3～8mm) and macroporous plate (10～25mm).Aperture sieve plate easily blocks, be not suitable for processing dirty, tough and
Feed liquid with solids；Macroporous plate then easy-to-leak liquid, it is desirable to operation pressure high, mass-transfer efficiency is relatively low.Sieve-plate tower is relatively
Taken into account well processing flux, purifying property and operation energy consumption, but its structure compared with complicated, operating flexibility is little, installation requirement is high,
Seldom it is applied on Water curtain machine.
Summary of the invention
Therefore, the present invention proposes for solving the problems referred to above, its objective is to provide a kind of board-like Water curtain machine of novel fine ga(u)ge screen,
Can significantly increase gas liquid contacting efficiency, improve the purification efficiency of Water curtain machine, reduce pressure drop and the energy consumption of system, its simple in construction,
Stable operation, be easy to safeguard.
The technical scheme that the present invention takes, is a kind of board-like Water curtain machine of fine ga(u)ge screen, including water curtain plate, sieve-plate tower, water tank, described
Sieve-plate tower includes inlet scoop, exhaust outlet, spreader, at least one block of column plate and overflow device, it is characterised in that:
1) described water curtain plate be arranged over tank, after absorbing liquid is transported to tank by water pump, drench flow down on water curtain plate；
2) described inlet scoop is located at middle part and/or the lower section of described water curtain plate, and waste gas is under the swabbing action of blower fan, from inlet scoop
Entering the bottom of described sieve-plate tower, entrance height is higher than the liquid level of sieve-plate tower；
3) described spreader is located at the lower section of described column plate, upwards and/or laterally sprays absorbing liquid.
Especially, described sieve plate is pore sieve plate, also referred to as honeycomb screen cloth, by foil or ceramic fiber sheet molding or
Sheet metal punch forming or ceramic post sintering molding, be to have certain altitude, spread all over the screen cloth of micro channel.
Described overflow device is at least overflow pipe, or is located at the overflow launder at described sieve plate edge；The overflow area sectional area formed
It is 0.05～0.2 with the ratio of column plate sectional area.
Described spreader is provided with adjustable spray head, can regulate diameter and the jetting height of injection drop, make droplet jet arrive close
Position bottom sieve plate, is carried secretly by air-flow from bottom to top and flows through screen cloth.
Mix with the waste gas entered from inlet scoop from the absorbing liquid of spreader ejection, form gas-liquid mixture, under fan action altogether
With flowing up and passing column plate, above column plate, produce a large amount of bubble and constantly rupture and coalescence, forming bubble level.Enter
And, absorbing liquid overflows the lower section flowing to column plate from overflow device, and waste gas upwards discharges sieve-plate tower under fan action.Institute in waste gas
The pollutant contained are when contacting with absorbing liquid, after absorbed liquid is captured or absorbs, flow in water tank with absorbing liquid.
The technical scheme that the present invention takes, described sieve-plate tower is provided with level governor, can the water of Field adjustment column plate when mounted
Pingdu, during to ensure to run, column plate liquid level everywhere or bubble level are highly consistent.Further, described sieve-plate tower cut
Face is rectangle, and described column plate is from the lateral plug-type installation of sieve-plate tower, it is simple to installs, regulate and dismantles.When screen surface is sent out
When giving birth to dirty, fouling and block, screen cloth can be taken out from sieve-plate tower and be carried out or change.
Compared with prior art, the advantage of the sieve-board type Water curtain machine that the present invention provides is:
1, using feed liquid way under micro channel sieve plate and plate, form biphase gas and liquid flow and pass micro channel, the bubble of generation is straight
Footpath is little, significantly increases gas liquid interfacial area, enhances mass transport process.
2, a large amount of bubbles carry out continuous erosion to sieve aperture at a high speed, it is not easy to produce fouling dirty stifled.
3, the levelness of screen cloth can be with Field adjustment, and screen cloth is readily disassembled, it is simple 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, spreader, 24, pore sieve plate, 25, overflow plate,
26, bubble level, 27, overflow launder
Detailed description of the invention
Referring to the drawings and the explanation of embodiment disclosed below, it is possible to understand that the purpose of the present invention, feature and effect.
A kind of 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 includes water curtain plate
12, it is arranged on the tank 11 above water curtain plate 12, is arranged on the water leg 13 below water curtain plate 12, is arranged on water curtain plate 12
Middle part and/or the inlet scoop 14 of lower section, be arranged on bottom water tank 15；Sieve-plate tower 2 include air inlet 21, exhaust outlet 22,
Spreader 23, column plate 24 and overflow device 25；Water curtain machine is also equipped 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 is positioned at the lower section of sieve-plate tower, higher than the liquid level at the bottom of tower.
When the sectional area of sieve-plate tower is bigger, gas distributor is set at air inlet, the air inlet uniformity distribution of Shi Tanei center and surrounding.
One or more layers column plate 24 is installed in sieve-plate tower.Described column plate 24 is pore sieve plate, and it has certain altitude, spreads all over greatly
The micro channel of amount, its structural parameters are height 3～30mm, and average pore size 0.5～5mm, percent opening is 0.25～0.9.Enter one
Step ground, the preferred structure parameter of pore sieve plate is height 10～20mm, and average pore size 1～3mm, percent opening is 0.5～0.8.
According to China Engineering Standardization association criterion CECS97:97, gas produces diameter more than 3mm in the liquid phase by porous media
The gas diffuser of bubble is referred to as middle macropore bubbler, produces the diameter efficient gas diffusion less than 3mm bubble in the liquid phase
Device is referred to as microporous diffuser.The bubble diameter that micropore gas distributor produces is little, substantially increases gas liquid interfacial area,
Enhance mass transport process.
As shown in Figure 2 and Figure 3, column plate 24 is provided with overflow device, such as, be located at the overflow that the overflow plate 25 at column plate edge is formed
Groove 27, or at least overflow pipe being located on column plate, 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 is higher than sieve plate 10～50mm,
And having many V-notch, the sectional area of overflow area is 0.05～0.2 with the ratio of the sectional area of column plate.
Spreader 23 is arranged on the lower section of sieve plate 24, is provided with multiple adjustable spray head, can regulate diameter and the spray of injection drop
Penetrate height.Distance bottom shower nozzle and column plate is 10～200mm, and preferred value is 20～50mm.Water pump 4 is by the suction in water tank
Receive liquid pump and deliver to spreader 23, upwards or laterally (include above interior outside, side or side-lower) and eject vaporific fine liquid
Drip.The diameter of regulation injection drop and jetting height, make droplet jet arrive the position bottom sieve plate 24, by from bottom to top
Air-flow carry secretly and flow through screen cloth 24.Feed liquid way is sprayed, with the flush water bath type dust remover phase of prior art under this plate
Ratio, air velocity and gas phase drag are little many, significantly reduce the energy consumption of blower fan.On described sieve-plate tower top, column plate upper
Side, is additionally provided with the auxiliary downward hydrojet of spreader, to improve liquid-gas ratio, can reduce the pressure loss, 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 blower fan 3
Swabbing action, spraying operation produces the waste gas of the compositions such as a large amount of coating clouds, dust, flue gas and flows to water curtain plate 12 direction；Waste gas
In fine droplets and particulate matter captured by the drop on water curtain plate 12 and liquid film, after current scour to water leg 13, stream
Enter in water tank 15；Waste gas is inhaled in sieve-plate tower 2 from inlet scoop 14.
From the fine droplets of spreader 23 ejection, form gas-fluid two-phase mixture with the waste gas entered from air inlet 21 in tower, to
Upper flowing also passes column plate 24, and form bubble level 26 above column plate 24.Liquid phase overflows the overflow plate 25 of column plate 24 both sides
After, back downward at the bottom of tower from overflow launder 27；Gas phase after purification upwards discharges sieve-plate tower from exhaust outlet 22.Biphase gas and liquid flow
Mainly pass through with micro air bubble form through during micro channel, thus there is the biggest contact area and very high mass transfer efficiency.Enter
One step ground, gas-liquid two-phase bubble level above column plate forms a large amount of bubble and constantly ruptures and update, making dusty gas be able to
Purify.
The sieve-board type absorption tower of prior art is usually gas-liquid counter current operation, and spreader is located at top, and liquid sprays downwards and goes up most
Side column plate, block-by-block column plate overflow and under.The gas-to-liquid contact only bubble level on column plate is carried out, in the sieve aperture of column plate the most not
Gas-to-liquid contact and mass transfer occur, and aperture is usually 3～25mm.The technical scheme that the present embodiment provides, column plate 24 is by having one
Determining the micro channel composition of thickness, spreader 23 is located at the lower section of column plate, and the drop of injection is carried secretly by gas from bottom to top,
After following current passes the micro channel of column plate 24, then above column plate 24, form bubble level 26.Owing to the gas liquid ratio of scrubbing tower is high,
Mainly pass through with micro air bubble form when biphase gas and liquid flow is through micro channel, thus there is the biggest contact area and the highest biography
Matter efficiency.Additionally, although the aperture of each micro channel is the least, but owing to pitch of holes is the least, percent opening (sieve aperture on sieve plate
The ratio of the gross area and aperture area area) on the contrary higher than the column plate of prior art, the pressure drop of whole column plate is the highest.
In prior art, column plate is arranged on inside sieve-plate tower, mutually supports fastening with other structural members, it is impossible to regulation levelness, leads
Cause the liquid level above column plate or bubble level height is different, the most different to the flow resistance of gas.So, gas flow through column plate and
The distribution of bubble level is the most uneven, and major part flows through from the region that liquid level lower resistance is little, will have a strong impact on the purification energy of sieve-plate tower
Power and purification efficiency.Additionally, column plate is if it occur that dirty bridging is dirty, it is difficult to be carried out or change.With prior art gas with
Continuous phase is compared by the sieve aperture of column plate, and in the present invention, a large amount of bubbles pass through sieve aperture, carry out lasting with high flow velocities to sieve aperture
Wash away, be not easy to produce fouling dirty stifled.
The technical scheme that the present embodiment is taked, the cross section of described sieve-plate tower 2 is rectangle.As in figure 2 it is shown, described column plate 24 from
The lateral plug-type installation of sieve-plate tower 2, dismantles in using the most easily, it is simple to installs, regulate and cleans.When
When screen surface occurs dirty, fouling to block, screen cloth can be taken out from sieve-plate tower and be carried out or change.Described sieve
The column plate of plate tower is additionally provided with adjustable support screw, and the height being supported screw by regulation just can Field adjustment when mounted
The levelness of column plate, during to ensure to run, column plate liquid level everywhere or bubble level are highly consistent.
The board-like Water curtain machine of fine ga(u)ge screen that the present embodiment is provided, simple in construction, stable, manufacture, debug and easy to maintenance；
Purification efficiency is the highest, to the clearance of coating cloud drop up to 99%, to the clearance of fine dust up to 98%, to solubility
The clearance of VOCs is up to 90%；Water consumption 0.1～0.3L/m3, the pressure loss 100～500Pa, fan static pressure is low, effectively
Taken into account Water curtain machine at disposal ability, purification efficiency and operation energy consumption.
Claims (9)
1. the board-like Water curtain machine of fine ga(u)ge screen, including water curtain plate, sieve-plate tower, water tank, described sieve-plate tower include inlet scoop,
Exhaust outlet, spreader, at least one block of column plate and overflow device, described spreader is located at the lower section of described column plate, it is characterised in that:
Described spreader upwards and/or lateral hydrojet, makes droplet jet arrive the position bottom sieve plate；The ejection of described spreader
Liquid and the waste gas entering sieve-plate tower from described inlet scoop form gas-liquid mixture, flow up and pass described column plate, at tower
The top of plate forms bubble level, and absorbing liquid overflows the lower section flowing to column plate from overflow device, and waste gas upwards discharges sieve-plate tower.
The board-like Water curtain machine of fine ga(u)ge screen the most according to claim 1, it is characterised in that: described column plate is pore sieve plate,
Its structural parameters are height 3～30mm, average pore size 0.5～5mm, percent opening 0.25～0.9.
The board-like Water curtain machine of fine ga(u)ge screen the most according to claim 1, it is characterised in that: the structural parameters of described column plate are
Highly 10～20mm, average pore size 1～3mm, percent opening is 0.5～0.8.
The board-like Water curtain machine of fine ga(u)ge screen the most according to claim 1, it is characterised in that: described spreader is provided with adjustable
Shower nozzle, can regulate diameter and the jetting height of injection drop.
The board-like Water curtain machine of fine ga(u)ge screen the most according to claim 1, it is characterised in that: the shower nozzle of described spreader and tower
Distance bottom plate is 10～200mm.
The board-like Water curtain machine of fine ga(u)ge screen the most according to claim 1, it is characterised in that: the shower nozzle of described spreader and tower
Distance bottom plate is 20～50mm.
The board-like Water curtain machine of fine ga(u)ge screen the most according to claim 1, it is characterised in that: at described sieve-plate tower top, tower
The top of plate, is provided with auxiliary spreader.
The board-like Water curtain machine of fine ga(u)ge screen the most according to claim 1, it is characterised in that: described sieve-plate tower is provided with level and adjusts
Joint device, can regulate the levelness of column plate.
The board-like Water curtain machine of fine ga(u)ge screen the most according to claim 1, it is characterised in that: the cross section of described sieve-plate tower is square
Shape, described column plate is from the lateral plug-type installation of sieve-plate tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410512450.9A CN104258667B (en) | 2014-09-26 | 2014-09-26 | The board-like Water curtain machine of fine ga(u)ge screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410512450.9A CN104258667B (en) | 2014-09-26 | 2014-09-26 | The board-like Water curtain machine of fine ga(u)ge screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104258667A CN104258667A (en) | 2015-01-07 |
| CN104258667B true CN104258667B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410512450.9A Expired - Fee Related CN104258667B (en) | 2014-09-26 | 2014-09-26 | The board-like Water curtain machine of fine ga(u)ge screen |
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| CN (1) | CN104258667B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492204A (en) * | 2015-01-08 | 2015-04-08 | 成都智科立信科技有限公司 | Novel internet-of-things control air cleaning and humidifying device |
| CN111389159A (en) * | 2020-04-13 | 2020-07-10 | 武汉科技大学 | High-efficient wet dust collector of porous medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2440164Y (en) * | 2000-07-21 | 2001-07-25 | 北京西山除尘器厂 | Shower foam desulfurizing duster |
| CN1621128A (en) * | 2003-11-26 | 2005-06-01 | 株洲工学院帅科机械清洗研究所 | Upper sprinkling secondary refining gas purifying technology |
| CN201320440Y (en) * | 2008-12-11 | 2009-10-07 | 于波涛 | Furnace smoke dust processor |
| CN204261518U (en) * | 2014-09-26 | 2015-04-15 | 常州友达环保科技有限公司 | The board-like Water curtain machine of fine ga(u)ge screen |
-
2014
- 2014-09-26 CN CN201410512450.9A patent/CN104258667B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2440164Y (en) * | 2000-07-21 | 2001-07-25 | 北京西山除尘器厂 | Shower foam desulfurizing duster |
| CN1621128A (en) * | 2003-11-26 | 2005-06-01 | 株洲工学院帅科机械清洗研究所 | Upper sprinkling secondary refining gas purifying technology |
| CN201320440Y (en) * | 2008-12-11 | 2009-10-07 | 于波涛 | Furnace smoke dust processor |
| CN204261518U (en) * | 2014-09-26 | 2015-04-15 | 常州友达环保科技有限公司 | The board-like Water curtain machine of fine ga(u)ge screen |
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| CN104258667A (en) | 2015-01-07 |
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Address after: 601, room 213164, block A, building 2, Chong Mo port, No. 18, middle Wu Road, Changzhou, Jiangsu Applicant after: Changzhou Xiwu Automation Co., Ltd. Address before: 213164 room B2503, science and Education Hall, 801 Zhong Wu Zhong Road, Changzhou, Jiangsu Applicant before: Changzhou Xiwu Automation Co., Ltd. |
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