KR20180073322A - Apparatus and Method for producing fine dust - Google Patents

Abstract

According to one embodiment of the present invention, a fine dust eliminating apparatus comprises: an inlet unit into which fine dusts are introduced; a drying unit which dries fine dusts introduced through the inlet unit; a receiving chamber which receives fine dusts having passed through the drying unit; and an electrohydrodynamic (EHD) nozzle which is installed at an upper end of a space inside the receiving chamber and supplied with a voltage to spray, in a gravity direction, droplets with a specific charge opposite to a charge induced on fine dusts introduced into the receiving chamber. According to one embodiment of the present invention, by spraying the liquid droplets with a specific charge opposite to electrical characteristics induced according to the surrounding environment or mutual crashing of the fine dusts including ultra-fine dusts of 10 μm or less are sprayed into a specific space through an EHD nozzle, the fine dusts can be effectively eliminated.

Description

Technical Field [0001] The present invention relates to a fine dust reduction apparatus,

The present invention relates to a fine dust reduction apparatus and a method thereof.

The most effective way to remove existing fine dust (including ultrafine dusts of 10 μm or less) is to use a filter such as a HEPA filter or a dust collecting facility such as an electrostatic precipitator. There are also small household appliances using plasma charge, but this is also in principle compatible with the dust collection facility.

In the case of using a filter, the use of a high-density filter material for removing fine dust has an effect of reducing a small amount of dust, but it is not suitable for treating a high concentration and a large amount of air, and an additional secondary waste after the filter is used .

In addition, since the electrostatic precipitator requires a complex system having a high energy and a multi-stage structure in order to increase the ultrafine dust removal rate, it is practically difficult to apply the related system to various post-treatment processes or fine dust removal as well as economical cost It was a problem.

Also, in various published publications already disclosed, the means and methods for removing fine dust are mainly a general mask type, an electrostatic precipitator, a filter material, etc., and the characteristics seen in some wet dust collecting methods are mostly focused on simple water spraying There is a technical limit to the removal of ultrafine dusts of 10 μm or less, which is not particularly suitable for removing fine dusts.

KR 1430524 B1

An object of the present invention is to fundamentally remove fine dust containing ultrafine dust of 10 탆 or less, and it is an object of the present invention to provide an electrohydrodynamic (EHD) And attracting and depositing the fine dust particles by an electric attraction force.

According to an embodiment of the present invention, there is provided a fine dust reduction apparatus comprising: an inflow section for introducing fine dust; a drying section for drying fine dust introduced through the inflow section; an accommodation chamber for accommodating fine dust passing through the drying section; And an EHD nozzle installed at the upper end of the space inside the accommodation chamber for spraying a droplet having a specific charge opposite to that of the fine dust charged into the accommodating chamber in a gravitational direction.

A first damper coupled between the inflow portion and the drying portion, the first damper being formed on the fine dust movement path to control fine dust movement only toward the drying portion; And a second damper coupled between the dryer and the accommodating chamber, the second damper controlling the movement of the fine dust only in the accommodating chamber direction.

Further, the droplet contained in the EHD nozzle may include a conductive nanomaterial or a liquid-soluble compound as an electrolyte.

The inflow portion may further include a separate inflow fan for sucking the fine dust into the inflow portion

The controller may further include a controller for controlling the amount of droplet sprayed from the EHD nozzle and the specific charge value by comparing the concentration of fine dust introduced into the accommodating chamber and the concentration of fine dust finally discharged from the accommodating chamber in the drying unit can do.

According to an embodiment of the present invention, there is provided a fine dust reduction method comprising: a step of introducing fine dust through an inflow part; a step of flowing to a drying part to remove moisture of the inflowing fine dust; Detecting an electrical characteristic of the fine dust flowing into the accommodating chamber, spraying the droplet from the EHD nozzle so as to have electrical characteristics opposite to the electrical characteristics of the detected fine dust, A step in which the liquid droplet and the fine dust are mutually coupled by an electrical attraction, and the combination of the sprayed droplet and the fine dust becomes electrically neutral, and the neutralized plurality of the complexes are collided and combined with each other to naturally precipitate do.

The concentration of the fine dust flowing into the accommodating chamber and the concentration of the fine dust flowing into the accommodating chamber may be adjusted by adjusting the concentration of the fine dust flowing into the accommodating chamber, A step of comparing the concentration of the final fine dust discharged from the accommodating chamber to the outside and completing the step when the measured value meets the reference value and, when the measured value does not match the reference value, the amount of the droplet to be sprayed from the EHD nozzle and the electrical characteristic value Spraying a droplet from the EHD nozzle to have an electrical characteristic opposite to that of the detected fine dust, adjusting the sprayed droplet and the fine dust to an electric attraction force; And the sprayed droplet and the fine dust aggregate become electrically neutral, and a plurality of the neutralized droplets collide and bond with each other to naturally precipitate.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

According to one embodiment of the present invention, a droplet having a specific electric charge opposite to that of electric charges charged according to the mutual collision of fine particles including ultrafine dust of 10 탆 or less or the surrounding environment is called an electrohydrodynamic (EHD) There is an effect that fine dust can be effectively removed by jetting into a specific space through a nozzle.

In addition, by maximizing the energy efficiency within a short period of time by controlling the electric charge value floating in the specific space including the fine dust and absorbing the fine dust to be neutralized, and the shape and the specific size thereof through the driving method of the EHD nozzle And at the same time, fine dust can be removed originally.

In addition, through the electrical characteristics of the liquid droplets injected through the EHD nozzle, the secondary fine particles are adsorbed and removed by the electrical attraction, so that secondary byproducts are not generated, and the maximum fine dust is removed in a specific space There is an effect that can be.

Also, by joining the related devices at the rear end of various processes in which fine dust or the like is generated, it is possible to effectively remove fine dust in a limited indoor space.

In addition, by controlling the natural impact of the fine dust and the movement environment through the inflow part for initially entering the fine dust and the drying part for drying, it is possible to charge a specific charge to the fine dust, So that the fine particles can be effectively removed by inducing electrical attraction with the droplet having the characteristic.

1 is a schematic view of a fine dust reduction apparatus according to an embodiment of the present invention;
FIG. 2 is a conceptual view illustrating operation of an EHD nozzle of a fine dust reduction device according to an embodiment of the present invention; FIG.
FIG. 3 is a schematic diagram illustrating a state of use of the fine dust reduction apparatus according to an embodiment of the present invention; FIG. And
4 is a flow chart of a method of reducing the amount of fine dust in the apparatus according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The objects, particular advantages and novel features of one embodiment of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings and the preferred embodiments thereof. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. Also, the terms "one side," " first, "" first," " second, "and the like are used to distinguish one element from another, no. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, a detailed description of known arts which may unnecessarily obscure the gist of an embodiment of the present invention will be omitted.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings, in which like reference numerals refer to like elements.

FIG. 1 is a schematic view showing the configuration of a fine dust reduction device according to an embodiment of the present invention. FIG. 2 is a conceptual view of operation of an EHD nozzle of a fine dust reduction device according to an embodiment of the present invention. Fig. 3 is a schematic view showing the state of use of the fine dust reduction device according to the first embodiment of the present invention.

The fine dust reduction apparatus according to an embodiment of the present invention includes an inlet 10 through which fine dust F flows, a drying unit 20 through which fine dust F flowing through the inlet 10 is dried, An accommodating chamber 40 in which the fine dust F having passed through the drying unit 20 is accommodated and an upper portion of the inner space of the accommodating chamber 40. A voltage is applied to the accommodating chamber 40, And an EHD nozzle 30 that emits a droplet L having a specific charge opposite to the telephone with the fine dust F thereon in the gravity direction.

The fine dust (F) generally includes general fine dust and ultrafine dust having a diameter of 10 mu m or less. An embodiment of the present invention can be used as a post-treatment technique for a process in which fine dusts can be generated in a large amount, so that it is possible to effectively remove and reduce fine dusts that are difficult to remove from existing devices or have a low removal rate.

The application field may be combined with a post-treatment process for fine dust treatment that occurs on various technical processes, but it is not limited thereto, and may be practically applied to various places and processes where fine dust may be generated, A fine dust reduction effect can be realized.

As shown in Fig. 1, the inflow portion 10 is a portion into which the fine dust F flows. The inlet 10 may be naturally connected to or coupled to a portion where the air containing the fine dust F is sprayed in a post-treatment process of a general process, so that the air containing the fine dust F may be introduced. In addition, the inlet fan 11 is coupled to the outside of the inflow section 10, that is, to the part where the fine dust F substantially flows, to actively inhale the outer fine dust F in the inward direction of the inflow section 10 Of course. It goes without saying that it is possible for a person skilled in the art to appropriately change the design according to the characteristics of the process and apparatus to which the invention is applied.

The exhaust gas containing the fine dust F may be an object to which the fine dust F is introduced, and finally the fine dust F is removed and the exhausted gas is discharged to the outside.

The drying unit 20 is a device for drying the fine dust F flowing through the inflow portion 10 and flowing. The drying method of the drying unit 20 can be variously applied, and the fine dust F can be dried by spraying a predetermined material capable of adsorbing moisture on the incoming fine dust F. [ If the moisture of the fine dust F is contained and contained, the electrical attraction for removing the fine dust F at the subsequent stage may be less effective. The fine dust F naturally comes to have a specific electric charge by colliding with and colliding with each other. At the same time, the moisture can be completely removed, so that it can be easily removed by using the electrical characteristics on the receiving chamber 40 described later.

The air including the fine dust F flows in only one direction of the direction of the drying unit 20 from the inlet 10 on the passage of the fine dust F connecting the inlet 10 and the drying unit 20 The first damper 12 may be coupled. The backflow of the air including the fine dust F is fundamentally prevented, so that not only the reliability of the process in the post-treatment process can be improved, but also the efficiency of reducing the fine dust F can be effectively improved. The damper structure for controlling the flow of air or gas containing fine dust F in only one direction of the first damper 12 in the direction of the drying section 20 can be applied to a conventional structure, It goes without saying that a damper structure can be applied.

The fine dust F that has been dried from the drying unit 20 finally flows into the receiving chamber 40 for removing the fine dust F. [ It is possible to naturally flow the air including the fine dust F onto the accommodating chamber 40 by the pressure of the exhaust gas containing the fine dust continuously flowing from the inflow portion 10 or the flow of the air. The second damper 21 is formed in the same structure as that of the first damper 12 during the course from the drying section 20 to the accommodating chamber 40 to dry the fine dust F in the drying section 20 The fine dust F in the direction of the drying section 20 from the accommodating chamber 40 can be prevented from flowing backward.

The accommodating chamber 40 is where the dried fine dust F is introduced and removed. First, the fine dusts F entering the accommodation chamber 40 already have a specific electric charge due to interaction such as collision or coupling. This is achieved by measuring the charge of the droplet L discharged from the EHD nozzle 30 formed at the upper end of the accommodating chamber 40 by measuring the charge of the fine dusts F collected on the receiving chamber 40 or before the accommodating chamber 40 . ≪ / RTI >

The droplet L discharged from the EHD nozzle 30 is an electrolyte and may include a conductive nanomaterial or a compound capable of dissolving in the liquid so as not to be disturbed by the process of being discharged and sprayed from the EHD nozzle 30. As shown in FIG. 2, by applying an electric voltage to the EHD nozzle 30, a specific electric charge can be applied to the droplet L to be ejected. The charge of the fine dust F flowing into the accommodating chamber 40 can be measured first and the specific charge opposite thereto can be charged to the droplet L. [ By doing so, the fine dust F and the droplet L can be adsorbed and bonded to each other by an electrical attractive force.

The droplet L and the fine dust F are controlled by controlling the specific charge of the droplet L sprayed from the EHD nozzle 30 and the specific charge charged to the fine dust F to be opposite to each other, Are coupled by an electrical attraction. It is possible to prevent collision and the like between these neutral bonding bodies C when the fine particles F of a certain degree are combined to become electrically neutral bonding bodies by adjusting the size and the charge characteristics of the liquid droplets L. [ So that the fine dust F is finally removed while being naturally precipitated in the direction of gravity.

Therefore, unnecessary secondary by-products are not generated at all in the process of removing the fine dust F, only the minimum energy according to the removal rate can be used, and the process of removing the fine dust F is also operated at the minimum level There is an advantage to be able to.

Various components such as a charge characteristic, a size, and a spraying speed of the droplet L sprayed from the EHD nozzle 30 can be appropriately adjusted by the driving method of the substantial EHD nozzle 30, And may be appropriately adjusted according to the size or the actual process conditions.

The control unit 50 measures the concentration of the fine dust F while moving from the drying unit 20 to the accommodating chamber 40 and measures the concentration of the fine gas F discharged from the accommodating chamber 40 And the concentration of fine dust (F) contained in the air phase are respectively measured and compared. In this comparison step, the efficiency of removing the fine dust F in the accommodating chamber 40 can be checked. When the relative removal efficiency does not reach the reference value, the EHD nozzle The amount of the droplet L to be sprayed from the nozzle 30, the specific charge value, and the like can be continuously adjusted and sensed in real time.

4 is a flowchart of a method of reducing a fine dust reduction device according to an embodiment of the present invention.

A method for reducing fine dust F according to an embodiment of the present invention includes a step of introducing fine dust F through an inlet 10 and a drying step of removing moisture from the fine dust F Flowing the fine dust F from the drying unit 20 to the accommodating chamber 40 and allowing the fine dust F flowing into the accommodating chamber 40 to flow into the accommodating chamber 40, Spraying the droplet L from the EHD nozzle 30 so as to have an electrical characteristic opposite to the electrical characteristic of the detected fine dust F, (C) of the atomized droplet (L) and the fine dust (F) become electrically neutral, and a plurality of the joined bodies (C) And a natural precipitating step.

As shown in FIG. 4, first, the fine dust F is introduced through the inflow part 10 (step S10). The inlet 10 may be coupled to the post-treatment of the process in which the conventional fine dust F may be generated to introduce the fine dust F, It may be provided with a suction means such as a suction means.

Next, it flows to the drying unit 20 so as to remove the moisture of the introduced fine dust F (S20). The drying unit 20 can completely remove the moisture of the fine dust F so that the specific fine charge of the fine dust F can be more easily charged in the final fine dust removing step. In addition, it is possible to facilitate the electrical coupling between the charged fine dust F and the liquid reservoir having opposite electrical characteristics. The drying of the fine dust F in the drying unit 20 can be carried out by a variety of well-known methods, and the water-absorbing material may be sprayed so as to separately adsorb and remove moisture of the fine dust F.

Next, the fine dust F from which moisture has been removed from the drying unit 20 flows into the receiving chamber 40 (S30). The drying step 20 may be performed naturally as the fine dust F passes through the drying unit 20 or may be stored in the receiving chamber 40 after a predetermined period of time has elapsed for the drying process in the drying unit 20, . ≪ / RTI > The first damper 12 may be provided on the moving path from the drying unit 20 to the accommodating chamber 40 so as to open and close the first damper 12, F) The drying process can be effectively performed. It should be noted that the structure of the unidirectional damper in which the air including the fine dust F can flow only in one direction of the direction of the accommodating chamber 40 can be applied to the first damper 12, The detailed description of the fine dust removing apparatus according to the present invention is omitted.

Next, step (S40) of detecting electrical characteristics of the fine dust F flowing into the accommodating chamber 40 is performed. The fine dust F naturally assumes a specific electric charge in the process of mutual collision and coupling due to free movement. It is possible to measure the charge of such fine dust F at the time of entering the accommodating chamber 40 but it is possible to measure a specific charge of the fine dust F flowing during the process between the drying unit 20 and the accommodating chamber 40 It is needless to say that a separate facility for measurement and detection can be provided.

Next, a specific charge of the droplet L is charged and sprayed through the EHD nozzle 30 provided on the upper end of the interior space of the receiving chuck so as to have an electrical characteristic opposite to that of the detected fine dust F, (S50). 2, the EHD nozzle 30 combines the fine dust F with the fine dust F through mutual coupling by removing a fine dust F by applying a specific electric charge to the discharged droplet L as shown in FIG. You can do it.

Next, a step S60 in which the sprayed droplets L and the fine dusts F are mutually coupled by an electrical attraction force. The sprayed droplets L and the fine dusts F have mutually opposing electrical characteristics so that they are mutually coupled with each other by an electrical attraction force.

Next, the joined body C of the sprayed droplet L and the fine dust F continues to bond to become the joined body C until they become electrically neutral. When the plurality of joined bodies C collide and bind with each other (S70). Finally, such a neutral bonding body C naturally precipitates, and fine dust F floating on the accommodation chamber 40 can be removed.

In this way, the fine dust F is removed on the accommodating chamber 40, and finally the air (exhaust gas) with the fine dust F reduced is discharged to the outside of the accommodating chamber 40.

At this time, the concentration of the fine dust F of the air (gas) including the fine dust F flowing onto the accommodating chamber 40 from the drying unit 20 and the concentration And measuring and comparing the fine dust (F) concentration of the air exhausted from the chamber 40 through the control unit 50.

The measurement and comparison of the concentration of the fine dust F on both sides through the control unit 50 not only can measure the efficiency of the reduction of the fine dust F but also takes into consideration the sensitivity of the fine dust F, The size, quantity and electrical characteristic value of the droplet L sprayed from the EHD nozzle 30 on the accommodating chamber 40 can be appropriately adjusted and controlled so that the fine dust F ) Reduction ratio can be improved. The droplet L is sprayed from the EHD nozzle 30 through the new controlled value and the process of the above-described fine dust reduction method is repeatedly performed.

If the reduction rate of the fine dust F meets the standard value that is normally required, the fine dust F in the accommodating chamber 40 can be reduced under the existing process conditions.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification and the modification are possible.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: inlet 11: inlet fan
20:
30: EHD nozzle 40: accommodating chamber
50: Control part F: Fine dust
L: droplet

Claims (7)

An inlet through which fine dust flows;
A drying unit for drying the fine dust introduced through the inflow portion;
An accommodating chamber in which fine dust having passed through the drying unit is accommodated; And
And an EHD nozzle provided at an upper end of the space inside the accommodating chamber for injecting a droplet having a specific charge opposite to a fine dust charged in the accommodating chamber into the accommodating chamber in a gravitational direction, Device. The method according to claim 1,
A first damper coupled between the inflow portion and the drying portion, the first damper being formed on the fine dust movement path and controlling fine dust movement only toward the drying portion; And
And a second damper coupled between the drying section and the accommodating chamber for controlling fine dust movement only in the direction of the accommodating chamber. The method according to claim 1,
Wherein the droplet contained in the EHD nozzle comprises a conductive nanomaterial or a liquid soluble compound as an electrolyte. The method according to claim 1,
Wherein the inflow portion further comprises a separate inflow fan for sucking the fine dust into the inflow portion. The method according to claim 1,
And a controller for comparing the concentration of fine dust introduced into the accommodating chamber and the concentration of fine dust finally discharged from the accommodating chamber in the drying unit and controlling the amount of droplet sprayed from the EHD nozzle and a specific charge value Fine dust reduction device. Introducing fine dust through the inflow portion;
Flowing into the drying section to remove moisture of the introduced fine dust;
The fine dust from which moisture has been removed from the drying unit flows into the accommodation chamber;
Detecting electrical characteristics of the fine dust flowing into the accommodating chamber;
Spraying a droplet from the EHD nozzle to have an electrical characteristic opposite to that of the detected fine dust;
The sprayed droplets and the fine dust are mutually coupled by an electrical attraction; And
Wherein the atomized droplet and the fine dust are electrically neutralized, and the neutralized plurality of the complexes collide and bond with each other to spontaneously precipitate. The method of claim 6,
Wherein the atomized liquid droplets and the fine dust are electrically neutralized, and after the neutralized plurality of the combined bodies are collided and combined with each other and spontaneously precipitated,
Comparing the concentration of the fine dust flowing into the accommodation chamber with the concentration of the final fine dust discharged from the accommodation chamber to the outside,
If the reference value is not met,
After adjusting the amount of droplet and the electrical property value to be sprayed from the EHD nozzle,
Spraying a droplet from the EHD nozzle to have an electrical characteristic opposite to that of the detected fine dust;
The sprayed droplets and the fine dust are mutually coupled by an electrical attraction; And
Wherein the atomized liquid droplets and the fine dust are electrically neutralized, and the neutralized plurality of the combined bodies collide and bond with each other to naturally precipitate.

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