CN204735084U - Promote little fine particles to gather device of growing up - Google Patents

Abstract

The utility model relates to a promote little fine particles to gather device of growing up, its characterized in that: it includes a two ends opening's casing, the both ends opening of casing is imported and airflow outlet as the air current respectively a plurality of baffles parallel with the incoming flow of inner wall interval fixed connection of casing, each the baffle will the internal partitioning of casing becomes a plurality of subchannels that are parallel to each other, at each it follows the swirl blade row of incoming flow flow direction interval arrangement, each group to be provided with the multiunit in the subchannel swirl blade arranges including a plurality of swirl blade along perpendicular to incoming flow direction interval arrangement.

Description

Promote the device of fine particle agglomeration

Technical field

The utility model relates to a kind of device promoting fine particle agglomeration, belongs to technical field of environment protection equipment.

Background technology

The flue dust that industrial combustion produces is the main source of fine particle in air, and coal-fired power station boiler is wherein one of most important contributor.Due to micron particularly Submicron Particles easily sucked by human body and be enriched with cytotoxic compound, countries in the world government has formulated and has constantly updated tough laws standard, controls diameter and is less than the discharge of particle (PM10) to air of 10 microns.Consider the harm to human body, national governments' special concern kinetic diameter is less than or equal to the discharge of the particle of 2.5 microns (or claiming PM2.5).Except directly damaging human body, subparticle is also one of major air pollutants causing atmospheric visibility low.The opacity of air depends primarily on the number of fine particle in emission, because reach peak value when the extinction coefficient of light is near wavelength is close to 0.1 μm and 1.0 μm.

In the industrial production, various different dust collection method and device are used to remove in air-flow the flying dust or particle that carry.But generally speaking, these dust arresters all have significant limitation for interception PM2.5.As electrostatic precipitator, be well suited for larger particle to remove from air-flow, but quite low for the filter efficiency of PM2.5 and more tiny Submicron Particles.And for example sack cleaner, under the condition constantly increasing the cloth bag number of plies, effectively can tackle PM2.5, but also constantly add the resistance of flue simultaneously, bag-type dust collector also needs regular deashing in addition, and very easily sticks with paste bag for the flue gas that humidity is higher.Along with Particulate Pollution discharge standard in combustion product gases is more and more stricter, the dust collection capacity of original dust arrester reaches the limit, cannot reach discharge standard under causing many situations.Therefore, under the requirement of the ultralow even ultra-clean discharge of the combustion product gases of current pursuit coal-burning boiler, need a kind of dust arrester of high efficiency, low cost badly.

Summary of the invention

For the problems referred to above, the purpose of this utility model is to provide a kind of device promoting fine particle agglomeration.

For achieving the above object, the utility model is by the following technical solutions: a kind of device promoting fine particle agglomeration, it is characterized in that: it comprises the housing of an open at both ends, the both ends open of described housing is respectively as airflow inlet and air stream outlet, multiple dividing plate parallel with incoming flow is fixedly connected with at the inwall interval of described housing, the interior separation of described housing is become multiple subchannel be parallel to each other by each described dividing plate, be provided with many groups in subchannel described in each and flow to spaced apart turbulence blades row along incoming flow, each is organized described turbulence blades package and draws together multiple edge perpendicular to carrying out the spaced apart turbulence blades of flow path direction.

The each group of described turbulence blades row being positioned at each subchannel is distributed in the same side of described subchannel.

The each group of described turbulence blades row being positioned at each subchannel is interspersed in the both sides of described subchannel.

Air flow outlet near described housing is provided with multiple current-sharing blade.

Described current-sharing blade adopts symmetrical aerofoil blade.

Described turbulence blades is one or more combinations in triangle, tile shape, wedge shape, rhombus, serpentine, " Z " shape, rectangle, ellipse and streamlined.

The utility model is owing to taking above technical scheme, it has the following advantages: 1, the utility model is owing to being provided with multiple dividing plate be parallel to each other in the housing, housing is separated into multiple passage by dividing plate, many group turbulence blades rows are provided with in each passage, therefore backflow and the vortex district of varying strength is manufactured in the gas flow at each turbulence blades, it is made to carry fine particle thing and solid wall surface making contact, adsorpting aggregation growing up comes off, make that the particle that carries in air-flow is easier to be filtered thereafter or otherwise to remove, the utility model is especially effective for superfine particulate matter.2, the placed angle of turbulence blades of the present utility model, shape, size and position relationship each other can according to user to channel pressure loss and improve the requirement of downstream dust arrester efficiency, incoming flow dust concentration, domain size distribution change and to adjust and optimization is determined, therefore, there is different hydrodynamic characteristics, to adapt to the needs of different purposes in industry, there is very strong controllability.3, before the utility model device is generally arranged on the existing dust arrester in industrial process downstream, can not only help to remove superfine particulate matter efficiently, and operator can be made need not to change the working procedure of original dust arrester, solve the problem of a series of working procedure changes brought after such as electrostatic precipitator being replaced with bag-type dust collector.4, the utility model structure is simple, easy to operate, not only can be applied in the industrial combustion fume emission dust removal process that particularly boiler of power plant burns, and can be used for that bulk material transports, in all dedusting industry of whipping process, object greatly improves the ability of original dust arrester interception fine particle PM2.5, reduces the smoke dust discharge concentration of more than 50-90% at different conditions.

Accompanying drawing explanation

Fig. 1 is overall structure schematic diagram of the present utility model;

Fig. 2 is the structural representation of the utility model turbulence blades;

Fig. 3 is the structural representation of the utility model current-sharing blade;

Fig. 4 is the flow schematic diagram in the utility model subchannel;

Fig. 5 is air-flow and the aerodynamics motion schematic diagram of particle under blade effect.

Detailed description of the invention

Below in conjunction with drawings and Examples, the utility model is described in detail.

As shown in Figure 1, the utility model comprises the housing 1 of an open at both ends, the both ends open of housing 1 is respectively as airflow inlet and air stream outlet, multiple dividing plate 2 parallel with incoming flow is fixedly connected with at the inwall interval of housing 1, the interior separation of housing 1 is become multiple subchannel 3 be parallel to each other by each dividing plate 2, arrange 4 in many groups that is provided with of the one or both sides of each subchannel 3 along carrying out flow path direction turbulence blades spaced apart, each group turbulence blades package draws together multiple edge perpendicular to carrying out the spaced apart turbulence blades 5 of flow path direction.

In a preferred embodiment, when turbulence blades row 4 is arranged on the both sides of subchannel 3, the turbulence blades row 4 being positioned at subchannel 3 side arranges 4 in interlaced arrangement with the turbulence blades being positioned at subchannel 3 opposite side.

In a preferred embodiment, air flow outlet near housing 1 is provided with multiple current-sharing blade 6, each current-sharing blade 6 can adopt symmetrical aerofoil blade (as shown in Figure 2), and the object arranging current-sharing blade 6 is that to make to carry the air-flow of dust even at exit flow velocity.

In a preferred embodiment, turbulence blades 5 is one or more combinations in triangle, tile shape, wedge shape, rhombus, serpentine (as shown in Figure 3), " Z " shape, rectangle, ellipse and streamlined; The edge shape of turbulence blades 5 can be the straight flange of rule or single groove zigzag, also can be irregular many grooves zigzag.

Operation principle of the present utility model is as follows: after incoming flow enters the airflow inlet of housing 1, each subchannel 3 will be entered, as Fig. 4, shown in Fig. 5, the incoming flow carrying powder dust particle being imported into each subchannel 3 flows through turbulence blades 5, whirlpool 7 can be produced in the upstream of each turbulence blades 5, downstream can produce recirculating zone 8 and whirlpool 7, so, each subchannel 3 will have swirling fluid group and the recirculating zone 8 of huge amount, tiny particle entrainments by they, carrying secretly wherein flows together skims over dividing plate 2 wall and the back side, turbulence blades 5 downstream, these solid wall surfaces are formed the flow boundary layer that a large amount of fine particle thing exists, to substantially increase between fine particle thing and they and dividing plate 2 wall, the interactional chance of generation at turbulence blades 5 back side, extremely important is that to close on the flowing velocity of wall almost nil, make tiny Submicron Particles in liquid bridge power, electrostatic force, the lower rapid adsorption of the effect such as pattern ylid Chuihua molecule power is at solid wall surface, mutually be gathered into block, until come off by the effect of astable flow disturbance and external vibrations, finally entrainmented to carry by air-flow with the form of " bulky grain " or " bulk " and depart from device described in the utility model, external flow disturbance comprises upstream incoming flow and passes through the brute force attack refluxed in the slot jet impingement and downstream wake formed between turbulence blades 5.

While like this, as shown in Figure 5, be difficult to be entrainmented by the backflow in the whirlpool 7 of turbulence blades 5 upstream and downstream and downstream, the back side by the bulky grain of upstream flow to turbulence blades 5, they will directly pass through whirlpool group and recirculating zone 8, add the making contact chance between they and fine particle, trickle Submicron Particles is sticked to rapidly on larger particles under the effect such as liquid bridge power, electrostatic force, pattern ylid Chuihua molecule power and is carried to downstream by air-flow together to transport, thus depart from device described in the utility model.

In said process, occurring between variable grain interacts refers to particle collision, contact or lean on enough near and cause absorption, condensation, catalysis and the even multiple effect such as chemical reaction; Particle and the effect of solid wall surface refer to that particle collides, contacts or lean on enough near and fine particle that is that cause adsorbs, is agglomerated on the surface of solids.

In industry, particle in flue is in transport process, resistance during flow of flue gas or pressure drop the smaller the better, and the speed of incoming flow of device upstream air-flow described in the utility model can change along with the change of the power of upstream equipment (such as power-equipment, smelting equipment etc.).Therefore, if adopt uncontrollable powder particle processing device, its pressure loss of air-flow process and efficiency of dust collection cannot equilibrate to the best.The utility model device can according to the change of upstream equipment power, the flow velocity of Incoming gas and direction etc. carry out adjusting (adjusting the shape, size, placed angle, spacing distance etc. of turbulence blades 5 thus the whirlpool size, recirculating zone yardstick etc. of adjustment generation), make the on-road efficiency optimum state of powder particle processing device.

The utility model is only described with above-described embodiment; the structure of each parts, setting position and connection thereof all can change to some extent; on the basis of technical solutions of the utility model; all improvement of carrying out individual part according to the utility model principle and equivalents, all should not get rid of outside protection domain of the present utility model.

Claims (6)

1. one kind promotes the device of fine particle agglomeration, it is characterized in that: it comprises the housing of an open at both ends, the both ends open of described housing is respectively as airflow inlet and air stream outlet, multiple dividing plate parallel with incoming flow is fixedly connected with at the inwall interval of described housing, the interior separation of described housing is become multiple subchannel be parallel to each other by each described dividing plate, be provided with many groups in subchannel described in each and flow to spaced apart turbulence blades row along incoming flow, each is organized described turbulence blades package and draws together multiple edge perpendicular to carrying out the spaced apart turbulence blades of flow path direction.

2. the device promoting fine particle agglomeration as claimed in claim 1, is characterized in that: each group of described turbulence blades row being positioned at each subchannel is distributed in the same side of described subchannel.

3. the device promoting fine particle agglomeration as claimed in claim 1, is characterized in that: each group of described turbulence blades row being positioned at each subchannel is interspersed in the both sides of described subchannel.

4. the device of the promotion fine particle agglomeration as described in claim 1 or 2 or 3, is characterized in that: the air flow outlet near described housing is provided with multiple current-sharing blade.

5. the device promoting fine particle agglomeration as claimed in claim 4, is characterized in that: described current-sharing blade adopts symmetrical aerofoil blade.

6. the device of the promotion fine particle agglomeration as described in claim 1 or 2 or 3, is characterized in that: described turbulence blades is one or more combinations in triangle, tile shape, wedge shape, rhombus, serpentine, " Z " shape, rectangle, ellipse and streamlined.