KR0182256B1 - Purifying method for polluted air - Google Patents

Abstract

The present invention performs a filtration by direct filtration method, adopts a continuous operation method of filtration and regeneration (cleaning) of the filter medium such as (sub) woven fabric or brush at the same time to achieve high efficiency of filtration and sustainability of the efficiency. Provided is a maintainable exhaust gas or polluted air purification device.

The purifier is separated by the filtration action of a filter that rotates the gas and foreign matter by passing the process gas through a brush (including other filters) rotating at high speed, preferably generating centrifugal force with spraying of the cleaning liquid. And discharge the clean gas passed through the filter while the foreign matter filtered in the filter is characterized in that the structure to discharge in the circumferential direction by centrifugal force. In addition, by spraying and mixing the cleaning liquid, the foreign matter can be adsorbed and filtered more efficiently, and an oil film can be formed on the rotating guide portion of the filter to clean the filter and rotate at a high speed. The charging efficiency can be further increased, and when the capacity of the processing gas is variable, the number of sections can be increased or decreased by configuring one processing gas chamber, a clean gas chamber and a filter between the divided sections.

Description

Stop exhaust gas or polluted air purification and method

Figure 1a is an axial cross-sectional view of the exhaust gas to polluted air purifying apparatus according to an embodiment of the present invention,

FIG. 1B is a cross-sectional view taken along the line A-A of FIG. 1A.

FIG. 2A is a longitudinal cross sectional view of FIG. 1A,

FIG. 2B is a cross-sectional view taken along the line B-B of FIG. 2A.

3 is an external view showing a state in which the exhaust gas or polluted air purifying apparatus according to the embodiments of FIGS. 1 and 2 is installed in a horizontal direction.

4 is an operating circuit diagram of the exhaust gas to polluted air purifier and peripheral devices of the present invention.

5 is a partial cross-sectional view according to another embodiment of the present invention.

6 is a partial cross-sectional view according to another embodiment of the present invention.

7 is an external view showing a state in which the exhaust gas or polluted air purifying apparatus according to the present invention is installed in a vertical direction.

8 is a partial cross-sectional view showing a state in which a brush support plate of porous and thin plates is installed.

9 is a partial cross-sectional view showing an example of a structure for spraying the cleaning liquid at the same time as cooling the internal shaft bearing.

* Explanation of symbols for main parts in drawings

1: Process gas chamber 1a, 2a: (split) external housing

2: clean gas room 3: crevice (collection room)

4: brush (filter) 5, 6: fixing means (separator)

7: gas supply pipe 8, 10: distributor

8a: process gas inlet 9: gas discharge pipe

10a: clean gas outlet 11: upper cover

12: lower cover 13, 13 ': spraying means (nozzle)

13a: washing liquid inlet 13b: washing liquid outlet

14: driving pulley 15: rotating shaft

16: internal bearing 17: (divided) internal housing

18: Retainer 19: Outer Bearing

20: drain pipe 21: cooling liquid inlet

22: Cooling liquid outlet 23: External housing assembly bolt

24: drive motor 25: exhaust fan

26: drain tank 27: cleaning liquid filtration filter

28: washing liquid pump 29: washing liquid cooler

30: replenishment liquid tank 31: replenishment liquid inlet pipe

32: replenishment liquid transfer pipe 33: cleaning liquid transfer pipe

34: coolant supply pipe 35: coolant discharge pipe

36: drain tube 37: high voltage charging electrode

38: high voltage electrode terminal 39: insulator

40: low voltage electrode terminal

The present invention is a particulate or mist (hereinafter referred to as a foreign substance) including exhaust gases such as internal combustion engines (especially diesel engines), boilers, incinerators and the like, polluted air and industrial manufacturing processes, harmful gases and dust generated from environmental pollution places such as subways. It relates to a device for removing.

In general, gas or air containing foreign substances generated in various engines, manufacturing plants, environmental pollution places, etc., has heat and / or viscosity, and thus it is not easy to remove them. Due to these characteristics, there was a limit to the selection of gas purifier and dust collector, and the cyclone dust collector using the centrifugal force cannot be expected to have high efficiency among the conventional methods, and the scrubber which is a cleaning dust collector has a limitation in the amount of processing gas and operates There is a costly disadvantage. In addition, the electrostatic precipitating method using static electricity does not have a constant efficiency depending on the operating time, and there are excessive disadvantages in operating costs.

The present invention is to solve the problems of the existing dust collection method described above, performing a direct filtration method rather than an indirect filtration method, the filtration and regeneration (cleaning) of the filter medium such as (sub) woven fabric or brush It aims to maintain a high efficiency of filtration and sustaining the efficiency by adopting the continuous operation method which is performed at the same time.

The purifying apparatus of the present invention for achieving this object is to rotate the gas and foreign matter by passing the processing gas to the brush (including other filters) rotating at high speed, preferably while generating a centrifugal force with the spray of the cleaning liquid The filter is separated by filtration and discharges clean gas that has passed through the filter, while the filtered foreign matter is discharged in the circumferential direction by centrifugal force. In addition, by spraying and mixing the cleaning liquid into the processing gas and the filter according to the drying degree of the processing gas, the oil film is applied to the rotating guide portion of the filter that cleans the filter and rotates at a high speed. Can be formed. In addition, by applying a high pressure potential to the process gas to charge the foreign matter to an electrostatic charge and applying a potential of opposite polarity to the filter, the filtration efficiency can be further increased. Also, when the capacity of the process gas is variable, one process gas chamber and a clean gas chamber can be used. And the number of sections can be increased or decreased by configuring the filter there between as one divided section.

Referring to the accompanying drawings, the configuration of the present invention will be described.

In FIG. 1 (a) (b) and FIG. 2 (a) (b), the gas supply pipe 7 passes through the split outer housings 1a and 2a and the split inner housing 17 of the process gas chamber 1. A distributor 8 is installed to install a plurality of gas supply pipes 7 in communication with each other, and the gas discharge pipes 9 penetrate the divided external housings 2a and the divided internal housings 17 of the clean gas chamber 2. The distributor 10 is installed to connect the plurality of gas discharge pipes (9) through. Although not shown, a primary filter may be installed instead of the distributor 8, and may purify the indoor and outdoor air.

The rotating shaft 15 is installed through the centers of the upper and lower carbers 11 and 12, and the inner bearing 16 may be installed at regular intervals to prevent vibration and thermal deformation of the rotating shaft 15. The inner bearing 16 is circulated by a coolant passage 23 formed in the center of the separator 5 as a fixing means by water cooling. The circular brush 4 is fixedly installed as a filter on the rotating shaft 15 at regular intervals, and the split inner housing 17 has a flange facing outward so that the circumferential portion of the brush 4 is inserted and guided. It is comprised so that the process gas chamber 1, the clean gas chamber 2, and the collection chamber 3 may each be interrupted | blocked by being installed before and behind 4). The nozzle 13, which is a spraying means, is installed to penetrate the outer housing 1a and the inner housing 17 of the process gas chamber part and to be supported by the inner bearing 16, and to face the nozzle 13 to the front and rear brushes 4. It is. Separators 5 and 6 as fixing means are provided to maintain the gap for the collection chamber 3 and to support the internal bearing 16 between the respective divided outer housings 1a and 2a and the divided inner housing 17. It is installed.

In FIG. 3, drain pipes 20 are installed at lower portions of the outer housings 1a and 2a to be connected to the drain tank 26, and contaminated cleaning liquid is discharged to the drain tank 26. Retainer 18 and outer bearing 19 are installed in front and rear of rotating shaft 15 penetrating the center of upper and lower cover 11 and 12, respectively, and drive pulley 14 and drive motor 24 or engine. It is connected to and driven. A plurality of divided outer housings (1a, 2a) is assembled and fixed by the housing assembly bolts 23, such a split structure is the number of process gas chamber 1, the clean gas chamber 2 and the brush (4) the amount of process gas It can be increased or decreased depending on.

When cooling of the inner bearing 16 is required, a plurality of nozzles, which are spraying means as shown in FIG. 9, are provided with a coolant supply pipe 34 and a coolant discharge pipe 35 connected to the cleaning liquid transport pipe 33 in FIG. 13 'may be formed in a desired angle and shape on the outer circumference of the bearing, in communication with the in-water cooling liquid flow path 16' around the inner bearing 16. As shown in FIG.

FIG. 4 is provided with a drain tank 26 to recover the contaminated cleaning liquid discharged through the drain pipe 20. The contaminated cleaning liquid is filtered and, when heated, is cooled and recycled. ), Washing liquid discharge pipe 36, washing liquid filtration filter 27, washing liquid pump 28, washing liquid cooler 29, and in the case of fixed type, supplement liquid tank 30, supplement liquid inlet pipe 31, the replenishment liquid transfer pipe 32, the drain discharge pipe 36 may be connected to the drain tank 26, and in the case of a mobile, such as a vehicle, the replenishment liquid inlet or washing liquid inlet 32 'and the drain in the drain tank 26 An outlet 36 'may be provided.

The configuration described above in connection with the accompanying drawings is shown and described in sections divided into sections, but the present invention is not limited thereto, and the outer and inner housings are integrally formed, and other components may be changed accordingly. Hereinafter, the operation and effect of the embodiment of the present invention having the above-described structure will be described according to the accompanying drawings.

In FIGS. 1 through 4, the process gas introduced into the process gas chamber 1 through the distributor 8 and the gas supply pipe 7 is transferred to the clean gas chamber 2 having a low pressure by the exhaust fan 25. The cleaning liquid, such as water, oil, or chemicals, is sprayed through the nozzle 13 of the processing gas chamber 1 in the center of the brush 4 which rotates at a high speed by the driving motor 24 or the engine. In the case of dry operation, the cleaning liquid spray is unnecessary or the cleaning air may be ejected. Hereafter, it is called washing liquid.

The sprayed cleaning liquid 13b disperses in the circumferential direction by centrifugal force to perform the cleaning action of the brush 4 and to form an oil film between the brush 4 and the inner housing 17 to ensure smooth operation of the brush. To prevent the leakage of process gas.

The process gas flowing from the process gas chamber 1 to the clean gas chamber 2 is directly filtered by the brush 4 and mixed with the sprayed cleaning liquid 13b, and gas and fine particles or mist are absorbed or adsorbed by the cleaning liquid 13b. It will be filtered more efficiently.

The gas, particulates, and mist, which are filtered foreign matters, pass between the flanges of the divided internal housings 17 by centrifugal force and move to the collection chamber 3. At this time, the filtration of the gas and the regeneration of the brush 4 are simultaneously performed.

On the other hand, the gas in the process gas chamber 1 is formed between the brush 4 and the inner housing 17 by the cleaning liquid, so that an oil film is not allowed to pass therethrough, and is only filtered through the brush 4 directly, so that the brush 4 Increased efficiency with lubrication for guiding).

The clean gas passing through the brush 4 flows into the exhaust fan 25 through the exhaust duct connector 10a and the exhaust duct 10b through the gas discharge pipe 9 and the distributor 10 and is discharged to the outside.

Meanwhile, the cleaning liquid moved to the collection chamber 3 is recovered to the drain tank 26 through the drain pipe 20 under the outer housings 1a and 2a, and the cleaning liquid filtering filter 27 through the cleaning liquid transfer pipe 33. After filtration, the liquid is cooled in the washing liquid cooler 29 via the washing liquid pump 28, moved to the washing liquid inlet 13a through the washing liquid conveying pipe 33, and sprayed onto the brush 4 by the pressure of the washing liquid pump 28. .

In addition, some of the cleaning liquid that has passed through the cleaning liquid cooler 29 cools the inner bearing 16 through the cooling liquid supply pipe 34 and the cooling liquid inlet 21 connected to the cleaning liquid transport pipe 33, and then the cooling liquid outlet 22 and the cooling liquid outlet 22. It moves to the drain tank 26 through the coolant discharge pipe 35 and circulates.

The cleaning liquid discharges a certain amount of drain to the wastewater treatment plant through the cleaning liquid discharge pipe 36 to prevent excessive contamination. Since the cleaning liquid is lost by evaporation and scattering and is insufficient as it is discharged through the cleaning liquid discharge pipe 36, the supplementary liquid tank 30 and the supplementary liquid inflow pipe 31 are provided to supplement the drain tank 26. In the case of a mobile device such as a vehicle, the cleaning liquid inlet pipe 31 and the cleaning liquid discharge pipe 36 may not be installed and may be discharged after a predetermined time through the lower drain outlet 36 ', and may be discharged through the injection means 32'. The cleaning solution can be replaced (supplemented) or the cleaning solution can be injected.

In FIG. 5, the high pressure electrode 37 is installed at the center of the distributor 8 to charge the processing gas introduced into the distributor 8 with electrostatic charge, and the low pressure electrode terminal 40 is installed at the external housing to install the high pressure electrode 37. When a low pressure current having a different polarity is applied, the charged particles are collected in the brush 4 which is polarized, and the filtration efficiency is further increased.

In FIG. 6, the spray nozzle 13 is also installed in the clean gas chamber 2, and the brush 4 on the clean gas chamber 2 side is not mixed with the cleaning liquid in the process gas chamber 1 and passes through the brush 4. Edo by spraying the cleaning solution can be further subjected to the adsorption and absorption process to further improve the filtration efficiency.

In FIG. 3, the brush 4 is rotated vertically. In FIG. 7, the exhaust gas or the polluted air purifier is vertically formed so that the brush 4 is rotated horizontally, and the drain pipe 20-1 is vertically rotated. It was installed on the lower cover 12 and connected to the drain tank 26. By rotating the brush 4 horizontally, the vertical type prevents the deflection of the rotational direction of the brush 4 which may occur during operation stop. Therefore, the size of the brush 4 can be increased compared to the vertical type. Can be increased. In addition, as shown in FIG. 8, the brush support plates 4 'of the porous and thin plates, which are narrower in the circumferential direction, are installed on both sides of the filter to prevent the filter from sag and maintain a uniform filter density. It can be rotated.

In addition, as shown in FIG. 9, in the case of installing the inner bearing 16 for supporting the rotating shaft 15 therein, the fixing means of the inner housing, that is, the separator 5, is external to the outer housings 1a and 2a. It is formed by extending into the inner housing 17 from the inner bearing 16 can be supported at the extended end via the bearing. In addition, when the exhaust gas or the polluted air is hot and the internal bearing needs to be cooled, the separator 5 is formed in a hollow shaft, and the cleaning liquid is introduced into the shaft water through the inside of the hollow shaft to allow the internal bearing to flow through the flow path 16 '. After cooling 16, the cleaning liquid is sprayed through a plurality of nozzles 16 'formed on the outer circumference of the bearing in communication with the flow path 16' so that cooling and spraying are simultaneously performed without a separate cleaning liquid spraying means.

According to the configuration and the action according to the embodiment of the present invention, the filtration is performed by a direct filtration method, and a continuous operation method in which filtration and regeneration (cleaning) of a filter medium such as (sub) woven or brush are simultaneously performed. By adopting the high efficiency of the filtration effect and the effect that can maintain the sustainability of the efficiency.

On the other hand, those of ordinary skill in the art, various modifications and applications will be possible from the foregoing description and the following claims. For example, the inner housing and the outer housing and the upper and lower carvers may be integrated into one another, or as the fixing means of the divided inner housing 17, the flanges of the respective divided inner housings 17, such as the divided outer housings 1a and 2a. The spacer may be inserted in between and the flange may be extended to fix the whole or each of the assembly bolts 23, and the rotating shaft 15 may be divided and fixed to be rotatable.

Claims (11)

Introducing exhaust gas to contaminated air (process gas) into the process gas chamber; Filtering foreign matter in the exhaust gas or the polluted air by passing the introduced exhaust gas or the polluted air in an axial direction through a filter rotating at a high speed; And collecting or removing the foreign matter filtered by the filter in the circumferential direction by the rotary winch force of the filter. The method of claim 1, wherein the inflow step further comprises the step of charging the foreign matter entrained in the exhaust gas or contaminated air by the high-pressure electrode to the electrostatic charge to increase the adsorption force of the foreign matter to the filter in the filtration step. Exhaust gas to polluted air purification method. According to claim 1 or 2, wherein the cleaning liquid is sprayed into the processing gas chamber in the inflow step to adsorb foreign matter to the cleaning liquid spray, and in the filtration step, the cleaning liquid spray adsorbed the foreign matter is filtered, and the collection or The removal step of the exhaust gas to polluted air, characterized in that to remove or trap the cleaning liquid spray filtered and the foreign matter adsorbed. The method of claim 3, further comprising the step of separating the foreign matter and the cleaning liquid through the drain tank and the filtration filter to the cleaning liquid spray collected or removed in the collecting or removing step, and recycling the separated cleaning liquid to the process gas chamber. Exhaust gas to polluted air purification method, characterized in that. At least one process gas chamber (1) into which exhaust gas or polluted air flows and at least one clean gas chamber (2) for discharging clean gas are provided therein, and foreign substances are discharged in the circumferential wall between the process gas chamber and the clean gas chamber. An inner housing 17 having an opening for the housing; A rotating shaft 15 rotatably installed in the center of the inner housing; One end is fixed to the rotary shaft and the other end is guided by the opening portion of the inner housing and rotates with the rotary shaft, adsorbing or filtering foreign matter in the exhaust gas or polluted air passing from the processing gas chamber to the clean gas chamber, and passing the clean gas. A circular filter (4) for discharging the adsorbed or filtered foreign matter by the centrifugal force rotating together with the shaft to discharge the inner housing to the outside of the open housing; And an outer housing (1a) (2a) formed with a gap in the circumferential direction with the inner housing to form a collecting chamber (3) in the gap to collect and remove foreign substances into the collecting chamber by the centrifugal force of the filter. Exhaust gas to polluted air purification apparatus, characterized in that 6. The apparatus according to claim 5, wherein the external housing comprises a plurality of divided external housings corresponding to each of the processing gas chamber and the clean gas chamber, and a plurality of divided external housings for facilitating the increase and decrease of sections consisting of the process gas chamber, the filter, and the clean gas chamber. The inner housing has a plurality of divided inner housings and flanges formed on the filter side, each having a gap for collecting chambers from a plurality of divided inner housings and outer housings corresponding to each of the process gas chamber and the clean gas chamber. Comprising a split inner housing fixing means for fixing the inner housing, the filter between the two flanges of the adjacent divided inner housing is guided and between the two flanges to act as an opening for discharging the foreign matter Exhaust gas or polluted air purification device. The cleaning liquid spray according to claim 6, wherein the cleaning liquid is sprayed to at least one of the process gas chamber and the filter so as to adsorb and filter the foreign matter more easily, to filter the foreign matter, to discharge the foreign matter together with the cleaning solution, and to form an oil film in the filter guide portion. Exhaust gas to polluted air purification apparatus, characterized in that the means is installed in the interior of the inner housing. 8. The method of claim 7, wherein the foreign matter adsorbed and filtered by the cleaning liquid is separated from the cleaning liquid and discharged from the cleaning liquid, and the fluid is connected to the collection chamber, which is a gap between the outer housing and the inner housing, for use by recycling the cleaning liquid. A drain tank having water or washing liquid injection means, filtration means fluidly connected to the drain tank and filtering only the washing liquid, a pump connected to the washing liquid circulation line for circulating the washing liquid, and hot exhaust gas or polluted air. Exhaust gas to polluted air purification apparatus further comprises a cooling means for cooling the cleaning liquid. The method according to claim 7 or 8, wherein the fixing means of the inner housing extends from the outside of the outer housing to the inside of the inner housing so as to support the rotary shaft from the inside, and the inner bearing and the bearing at the end of the extended fixing means. When the exhaust gas or the polluted air is hot and cooling of the internal bearing is required, the rotating shaft is interposed therebetween, and at least the fixing means on the treatment gas actual side of the fixing means is formed as a hollow shaft. A flow path communicating with the hollow shaft is formed in the bearing to allow the internal bearing to cool, and the cleaning liquid spraying means is a plurality of nozzles formed in the outer circumference of the bearing to communicate with the flow path. Purifier. The method of any one of claims 5 to 8, further comprising a charging means for charging the foreign matter in the exhaust gas or polluted air flowing into the process gas chamber of the inner housing to the electrostatic charge, the filter is opposed to the electrostatic charge Exhaust gas to polluted air purifier, characterized in that the potential of the polarity is applied. The porous and thin filter support plate according to any one of claims 5 to 8, wherein the filter support plate of the porous and thin plates is narrower in both directions of both sides of the filter to prevent the filter from sag and to smoothly rotate the filter while maintaining a uniform filter density. Exhaust gas to polluted air purification apparatus, characterized in that provided is provided.