KR20160082796A - Dust collection and heat exchanger - Google Patents

Dust collection and heat exchanger Download PDF

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Publication number
KR20160082796A
KR20160082796A KR1020140192169A KR20140192169A KR20160082796A KR 20160082796 A KR20160082796 A KR 20160082796A KR 1020140192169 A KR1020140192169 A KR 1020140192169A KR 20140192169 A KR20140192169 A KR 20140192169A KR 20160082796 A KR20160082796 A KR 20160082796A
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KR
South Korea
Prior art keywords
dust
collecting
dust collection
heat
heat exchange
Prior art date
Application number
KR1020140192169A
Other languages
Korean (ko)
Inventor
오태진
오정수
오영정
오성준
김동권
이창수
서해천
Original Assignee
오태진
오성준
오정수
다이텍연구원
오영정
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 오태진, 오성준, 오정수, 다이텍연구원, 오영정 filed Critical 오태진
Priority to KR1020140192169A priority Critical patent/KR20160082796A/en
Publication of KR20160082796A publication Critical patent/KR20160082796A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/002—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using inserts or attachments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/004—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using protective electric currents, voltages, cathodes, anodes, electric short-circuits

Abstract

The present invention relates to a heat exchanger capable of collecting dust. The heat exchanger capable of collecting dust comprises: a dust collection drum (10) having an inlet and an outlet to allow oil vapor injected by a fan (11) to pass therethrough, and a dust collection hopper (13) disposed on a lower surface thereof; a charged dust collection unit (20) comprising an electrode bar (21) installed around the inlet of the dust collection drum (10) to negatively charge highly viscous dust contained in the oil vapor, and a heat exchange pipe (23) arranged adjacent to the electrode bar (21) to electrically collect the negatively charged dust in an oil vapor form; an adsorption dust collection unit (30) having a heat exchange pipe (23) to exchange heat with the liquefied and semi-liquefied dust passing through the charged dust collection unit (20) to use viscosity to adsorb and collect the dust; and a scraper unit (40) having a perforated scraper blade (41) to remove the dust transported along the charged dust collection unit (20) and the heat exchange pipe (23) of the adsorption dust collection unit (30) and collected. Accordingly, the oil vapor flowing into the dust collection drum sequentially passes through the charged dust collection unit where the dust is electrically collected and the adsorption dust collection unit where the dust is adsorbed and collected to simultaneously collect the dust in different manners to improve dust collection efficiency. The oil vapor uniformly comes in contact with the heat exchange pipe of the dust collection unit and waste heat is efficiently collected to prevent heat loss to prevent damage to an additionally installed electric dust collector or degradation in efficiency.

Description

[0001] Dust collection and heat exchanger [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust-collecting heat exchanger, and more particularly, to a dust-free filter dust-collecting heat exchanger for efficiently filtering dust having a high viscosity using a change in physical properties according to temperature and for increasing a waste heat recovery rate.

Generally, a dust collector for collecting various dusts and dust is installed in a chimney or an exhaust duct where polluted air containing a large amount of dust is discharged. At this time, since the dust collector is mainly formed as a filter type, dust, which is highly viscous, And the filter must be replaced or cleaned from time to time.

Accordingly, in the conventional art, there has been proposed a system for removing a screen net provided on a pipe in a pipe, a rotary wing rotatably installed inside a pipe in front of the screen net, A plurality of scrapers to be rotated are brought into contact with the screen screen to scrape the screen screen to thereby continuously remove the foreign matter filtered through the screen screen, thereby providing a technique capable of continuous use without cleaning.

However, in the above-described prior art, since the foreign substance is removed by scraping off the surface of the screen net for filtering air and dust, the dross of the coarse particles filtered on the surface of the screen screen is crushed by the scraper, The filtering performance is deteriorated due to the influx, and a part of the filter is clogged in the screen network and the dust collecting function is lost in a short period of time.

Further, in the case of dust containing oil and water, even when scraped by a scraper, the dust is adsorbed on the screen net to form a film, so that it can not be used as a viscous dust collector because it can not function as a scraper. In case of polluted air discharged in the state, a heat exchanger for recovering waste heat must be installed separately, which increases the volume and makes maintenance difficult.

The applicant of the present invention has disclosed in Korean Patent No. 10-1471074 that the high temperature polluted air is scattered in the wing portion and then adsorbed to the heat exchanger tube and then is continuously collected by a scraper and performs a dust collecting function without a filter and a heat exchange tube absorbs waste heat of polluted air In particular, since the surface of the heat exchanger tube is always kept clean by the scraper, the heat exchange efficiency is maintained for a long period of time, and the dust adsorbed on the heat exchanger tube is quickly cooled and easily removed as a solid form There is a technology registered in advance.

However, in order to increase the efficiency of the electrostatic precipitator after the dust is introduced into the high temperature state of the dust having a high viscosity in the form of vapor, the dust collecting method using the change in physical properties according to the temperature is developed.

Accordingly, it is an object of the present invention to provide an electric dust collecting apparatus and a dust collecting method for efficiently dust-collecting dust having a high viscosity, Filter dust-collecting heat exchanger for preventing a problem of deterioration or deterioration of the filter-dust-collecting heat exchanger.

In order to achieve the above object, a feature of the present invention is to provide a dust collecting apparatus comprising: a dust collecting drum (10) having an inlet and an outlet for passing a vapor injected by a fan (11) and a dust collecting hopper (13) An electrode rod 21 provided on the inlet side of the dust collecting drum 10 to charge negative (-) charges contained in the vapor and having a high viscosity, and an electrode rod 21 disposed adjacent to the electrode rod 21, A charge collecting part (20) composed of a heat exchange tube (23) for electrostatically collecting dust in the state; An adsorption dust collector (30) having a heat exchange tube (23) for adsorbing and collecting the liquefied and semi-liquefied dust that has passed through the charge dust collector (20) by using heat to exchange heat; And a scraper portion 40 which is carried on the heat collecting portion 20 and the heat exchanging pipe 23 of the adsorption dust collecting portion 30 and includes a puncture type scraper blade 41 for removing the collected dust .

In this case, the heat exchange tube 23 of the charge collecting part 20 is arranged such that the diameter of the heat exchange tube 23 of the absorption collecting part 30 is larger than that of the heat exchange tube 23, and the arrangement interval is densely arranged.

The scraper portion 40 is characterized in that both ends of the scraper portion 40 are simultaneously operated by a driving means 42 including a belt, a rack, a pinion, a cylinder, and a screw.

The dust attracted to the rotary electrostatic dust-collecting disk 52 is connected to the outlet of the dust-collecting drum 10, and the dust attracted to the rotary electrostatic dust- 50 are provided.

The heat exchanging tube 23 is provided with a heating medium injection part 23a and a discharge part 23b respectively and the inner space of the injection part 23a and the discharge part 23b are partitioned by partition walls 23c So that the heat medium is circulated in a reciprocating manner.

According to the present invention, dust having a high viscosity is efficiently and continuously filtered by using a change in physical properties according to temperature at the charge collecting portion and the adsorption collecting portion, and the recovered energy recovery rate through the heat exchanging tube is improved, There is an effect that a problem that the electric dust collecting part for damaging the electric dust collecting part due to high temperature or deteriorating performance is prevented in advance.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a filter-free dust-collecting heat exchanger according to the present invention; FIG.
Fig. 2 is a configuration diagram showing a modified embodiment of a no-filter dust-collecting heat exchanger according to the present invention; Fig.
Fig. 3 is a view showing the driving means of the no-filter dust-collecting heat exchanger according to the present invention; Fig.
FIG. 4 is a view showing a dust collection state of a no-filter dust-collecting heat exchanger according to the present invention; FIG.
FIG. 5 is a schematic view showing an operating state of a scraper section of a no-filter dust-collecting heat exchanger according to the present invention; FIG.
6 is a configuration diagram showing an electric dust collection unit of a filterless dust collecting heat exchanger according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a dust-collecting heat exchanger, in which a dust having a high viscosity is efficiently filtered by using a change in physical properties according to temperature, so that the structure is easily miniaturized and the recovery rate of waste heat is improved, And includes a dust collecting drum 10, a charge collecting portion 20, an adsorption collecting portion 30, and a scraper portion 40 so as to prevent damage to the structure or deterioration of efficiency.

1 to 3, the dust-collecting drum 10 according to the present invention is formed as a cylindrical or box-shaped hollow structure having an inner hollow therein, and has an inlet / outlet 10a ) 10b, and a dust collecting hopper 13 is provided on the bottom surface. The fan 11 collects the vapor discharged from the chimney or the exhaust duct by air injection means operated by a separate driving motor and supplies the collected vapor to the inside of the dust collecting drum 10, Thereby preventing the incoming vapor from flowing backward.

The dust collecting unit 20 is for dust collecting at an initial stage of the dust contained in the high-temperature vapor of 150 ° C or higher, which is introduced into the dust collecting drum 1, into the dust collecting drum 10. The dust contained in the high- Since the coupling efficiency is low and the granulation is not properly performed, the collection efficiency is lowered by using the filter. Therefore, the vapor is passed through the electrode rod 21 provided at the inlet side of the dust collecting drum 10 to form an electric field, (-) electric charge is charged to the high dust and the electric charge is unbalanced, and the dust having negative electric charge is discharged to the heat exchange pipe 23 (23) which contains a relatively large amount of positive charge in the course of passing through the charge collecting part 20 ).

On the other hand, the adsorption dust collecting unit 30 is in contact with the dust of the liquefied and semi-liquefied vapor passing through the charge collecting unit 20, and the vapor passing through the collecting drum 10 passes through the charge collecting unit 20 The temperature is lowered to about 100 ° C. because the heat exchanging tube 23 is in contact with the heat exchange tube 23 to partially cools the residual dust molecules. As a result, the residual dust molecules adhere to each other.

The viscous dust particles included in the vapor are adhered to the surface of the heat exchange pipe 23 disposed on the movement path in the course of passing through the heat exchange tubes 23 forming the adsorption dust collector 30, The second collection of

The heat exchange tube 23 forming the charge dust collecting unit 20 and the adsorption dust collecting unit 30 is separated from the dust collecting drum 10 for the purpose of collecting dust particles and heat- And a heating medium such as cooling water, cooling water, oil or the like is injected into the inside so that waste heat can be recovered through heat exchange in contact with the high-temperature vapor of the introduced oil, and forced circulation is performed by a separate circulation structure such as a pump. Cooling and recycling of the waste heat are performed at the same time. An injection part 23a and a discharge part 23b are added to the heat exchange pipe 23 so that the heating medium can be easily supplied and collected.

The heat exchanging tube 23 is provided with a heating medium injection part 23a and a discharge part 23b respectively and the inner space of the injection part 23a and the discharge part 23b is partitioned by the partition wall 23c So that the heating medium is circulated in a reciprocating manner. Since the injection section 23a and the discharge section 23b are divided by the partition 23c to form one conveyance path, the operation can be performed by using one circulation means, and the heat medium is repeatedly injected into the dust collection drum 10 So that the heat exchange efficiency is further improved.

The scraper portion 40 is provided with a puncture type scraper blade 41 for removing the collected dust while being transported through the heat exchange pipe 23 of the charge collecting portion 20 and the adsorption dust collecting portion 30.

The scraper blade 41 has a through hole 45 formed at a position corresponding to each of the heat exchange tubes 23 as shown in FIGS. 1 to 5. The plurality of heat exchange tubes 23 are accommodated in the through holes 45 Respectively. When the scraper blade 41 is linearly reciprocated in the longitudinal direction of the heat exchange tube 23, the through hole 35 is transported along the outer circumferential surface of the heat exchange tube 21 and scraped off.

At this time, the scraper portion 40 is provided so that both ends of the scraper portion 40 are simultaneously operated by a driving means 42 including a belt, a rack, a pinion, a cylinder, and a screw. Even when the scraper portion 40 is extended, the driving means 42 provided at both ends of the scraper portion 40 are operated at the same time, so that the scraper portion 40 is tilted There is an advantage that the operation failure due to the heat exchange tube 23 and the wear of the heat exchange tube 23 are prevented.

For reference, the dust adhered to the heat exchange tube 23 during operation of the scraper portion 40 is rapidly cooled by the heat exchange action by the circulation of the heating medium, and the viscosity is lowered. Therefore, the scraper blade 41 ). ≪ / RTI >

The scraper portion 40 has a through hole 45 formed in an enlarged size relative to the heat exchange pipe 23 and a ring-shaped scraper blade 46 concentrically formed on the through hole 45 so as to be detachable. 5 (b), the scrap blade 46 is divided into 2 to 4 pieces, and the scrap blade 46 is locally replaced without completely separating the scrapper 40 during wear, have.

The dust of the vapor removed by the scraper portion 40 is discharged to the outside by the dust collecting hopper 13 installed to close the bottom surface of the dust collecting drum 10 of the dust collecting drum 10. [ The dust collecting hopper 13 may be provided with a separate valve for discharging the collected dust to the outside. The dust collecting hopper 13 is formed to have an upper stream stacking structure and is removed by the scraper 31, Dust that falls down collects in one place and collects quickly. The collected dust is collected to the outside through the valve described above or discharged to the screw type conveyor.

The heat exchange tube 23 of the charge and collecting part 20 is arranged such that the diameter of the heat exchange tube 23 of the absorption and collection part 30 is larger than that of the heat exchange tube 23 and the arrangement interval is densely arranged. As the surface area on which the charging is performed is widened, the circulation rate of the introduced vapor decreases, and the contact time between the vapor and the heat exchange tube 23 is increased, so that the collection efficiency is improved and the circulation amount of the heating medium passing through the heat exchange tube 21 is increased, The efficiency of the dust collecting part 25 is improved, so that the residual dust is rapidly granulated due to the cooling of the polluted air, leading to the improvement of the secondary collecting efficiency of the second dust collecting part 25.

As shown in FIG. 4, the plurality of heat exchange tubes 23 forming the above-described charge dust collecting unit 20 and the adsorption dust collecting unit 30 are arranged in a zigzag shape, So that the contact of the oil vapor circulating in the dust collecting drum 10 is frequently made, thereby improving the dust collecting rate.

Further, an electric dust collecting unit 50 may be further connected to a discharge port 10b through which the filtered vapor is discharged through the dust collecting drum 10. The electric dust collecting unit 50 may adopt a structure in which electric dust collecting such as the electrode unit and the first dust collecting unit and the waste heat recovery are simultaneously performed. However, the present invention is not limited thereto, It is possible to apply a precise filtration structure so as to improve the collection efficiency of the residual fine dust since the possibility of damage to the filtration structure is reduced.

6 shows an embodiment of the electric dust collecting unit 50 and includes a rotating electrostatic dust collecting disk 52 therein and dust adsorbed on the rotating electrostatic dust collecting disk 52 is removed by the auxiliary scraper 54 do. The rotating electrostatic dust collecting disk 52 is disposed in a double row and a secondary scraper 54 is provided between the respective dust collecting disks 52 to remove dust adsorbed on the dust collecting disk 52.

At this time, the vapor flowing into the electric dust collecting unit 50 is subjected to first and second dust removal through the charge collecting unit 20 and the adsorption dust collecting unit 30. The heat exchanging pipe 23, which forms the respective dust collecting units, So that waste heat is recovered. The dust absorbed by the auxiliary scraper 54 during the rotation operation of the dust-collecting disk 52 is discharged to the outside through the dust-collecting disk 52 of the electric dust-collecting unit 50, And the removed dust is collected and discharged by the same valve as that of the valve 42 installed in the dust collecting drum 1.

Further, the electric dust collection unit 50 is provided with an auxiliary heat exchange pipe 56 so that the heat medium is circulated inside. 6, a plurality of the auxiliary heat exchange tubes 56 may be arranged in the same manner as the heat exchange tubes 20 of the dust collecting drum 1 inside the electric dust collection section 50, The residual heat of the polluted air can be further recovered by heat exchange and used as renewable energy.

10: dust collecting drum 20:
21: Electrode 23: Heat exchange tube
30: suction dust collector 40: scraper part

Claims (5)

A dust collecting drum 10 having an inlet and an outlet to allow the vapor introduced by the fan 11 to pass therethrough and a dust collecting hopper 13 at the bottom;
An electrode rod 21 provided on the inlet side of the dust collecting drum 10 to charge negative (-) charges contained in the vapor and having a high viscosity, and an electrode rod 21 disposed adjacent to the electrode rod 21, A charge collecting part (20) composed of a heat exchange tube (23) for electrostatically collecting dust in the state;
An adsorption dust collector (30) having a heat exchange tube (23) for adsorbing and collecting the liquefied and semi-liquefied dust that has passed through the charge dust collector (20) by using heat to exchange heat;
And a scraper portion 40 which is carried on the heat collecting portion 20 and the heat exchanging pipe 23 of the adsorption dust collecting portion 30 and includes a puncture type scraper blade 41 for removing the collected dust Filterless dust-collecting heat exchanger. The method according to claim 1,
Wherein the heat exchange tube (23) of the charge and collecting part (20) is arranged such that the diameter of the heat exchange tube (23) of the absorption and collection part (30) is larger than that of the heat exchange tube group. 3. The method according to claim 1 or 2,
Wherein the scraper portion (40) is provided so that both ends of the scraper portion (40) are simultaneously operated by a drive means (42) including a belt, a rack, and a pinion, cylinder, and screw. 3. The method according to claim 1 or 2,
The dust absorbed by the rotating electrostatic dust-collecting disk 52 is absorbed by the electrostatic dust collecting unit 50, which is removed by the auxiliary scraper 54. The electrostatic dust-collecting disk 50 is connected to an outlet of the dust collecting drum 10, Wherein the dust collecting heat exchanger is provided with a dust collector. 3. The method according to claim 1 or 2,
The heat exchange tube 23 is provided with an injection part 23a and a discharge part 23b of a heating medium respectively and the inner space of the injection part 23a and the discharge part 23b is divided by the partition wall 23c, Is circulated in a reciprocating manner.
KR1020140192169A 2014-12-29 2014-12-29 Dust collection and heat exchanger KR20160082796A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210085065A (en) * 2019-12-30 2021-07-08 주식회사 대경에스코 Oilmist condensation recovery system of electrostatic precipitator type
KR20230078078A (en) 2021-11-26 2023-06-02 주식회사 대경에스코 Condenser with scraper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210085065A (en) * 2019-12-30 2021-07-08 주식회사 대경에스코 Oilmist condensation recovery system of electrostatic precipitator type
KR20230078078A (en) 2021-11-26 2023-06-02 주식회사 대경에스코 Condenser with scraper

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