KR102449409B1 - High efficiency scrubber apparatus with cyclone in the condensing for exhaust gas from plating tank - Google Patents

Abstract

The present invention is to discharge the waste gas discharged from the plating tank performing the plating process to the upper side from the lower end of the scrubber by the blower; By the cleaning liquid flowing into the upper end of the scrubber and freely falling to the lower end, the waste gas to be cleaned flows upward, is discharged from the upper discharge side of the scrubber, and flows into the cooling unit through the discharge duct, and the generated condensate is a cyclone stored in the condenser; A cyclone that flows downward along the inner periphery from the inlet of the cyclone condensing device and flows upward in the opposite direction from the central part of the lower end is mounted inside the cyclone condensing device, purifies the residual waste gas and discharges it to the atmosphere. ; so that the condensed water flowing out from the cyclone condensing device passes through the filtering device and is circulated back to the plating bath; It is to provide a high-efficiency scrubber equipment having a cyclone condensing device for treating waste gas in the plating bath.
This is to provide a high-efficiency scrubber device that collects the air discharged through the scrubber and improves the air pollutant purification ability of the scrubber through the condensation process.
In addition, the waste gas discharged to the atmosphere is collected, cooled (condensed) and then discharged through the cyclone process, and the waste gas is purified and discharged. will do

Description

{High efficiency scrubber apparatus with cyclone in the condensing for exhaust gas from plating tank}

The present invention is a high-efficiency scrubber equipment having a cyclone condensing device for treating exhaust gas from a plating tank. More specifically, in order to treat the waste gas generated inside the plating tank performing the plating process, the generated waste gas is primarily a scrubber Treatment through equipment, secondary cooling treatment, and storing the generated condensate in a cyclone condensing device, and tertiarily adding a cyclone device to the cyclone condensing device, treating the remaining waste gas, and re-plating the condensate It relates to a high-efficiency scrubber equipment having a cyclone condensing device for treating waste gas of a plating tank that efficiently treats waste gas of a plating tank through an iterative process of circulating the tank.

In general, wastewater generated from industrial facilities such as plating plants is a problem because it contains various heavy metals regardless of the amount of it.

In particular, during the plating process, since the plating object is immersed in a liquid in a plating tank or a water washing tank, the wastewater generated can inevitably contain heavy metals, which can be fatal even in small amounts.

On the other hand, from the viewpoint of air pollution, in the case of copper compounds in the vapor state generated in the copper plating bath, even a small amount can cause respiratory diseases or severe irritation to the eyes or skin.

Heavy metals such as lead also exist in the form of particles of about 1 micron in the atmosphere and can cause various diseases by being introduced into the human body through the respiratory tract and accumulating.

In this way, various facilities are provided in the plating plant to treat the wastewater and polluted atmosphere generated in the plating plant. The system for treating the wastewater and the polluted atmosphere generated in the conventional plating plant is in the plating tank and the washing tank. The generated polluted atmosphere is collected in the plating tank hood and the washing tank hood, respectively, and flows into the pollution treatment facility through the duct connected to the blower.

On the other hand, wastewater generated in the plating tank is collected separately, sent to a specialized treatment device, dried, etc., and the solid content is treated by a separate discharge facility. Wastewater generated in the washing tank is sent to an external wastewater treatment unit through a drain pipe for treatment.

In this conventional system for treating wastewater and polluted air, it is suitable for the treatment of odors in the polluted atmosphere treated in the gasification tank, but still contains trace amounts of heavy metals in the atmosphere discharged from the exhaust hood in the treatment of heavy metals in the atmosphere. There is a problem.

In the case of a vaporization tank that purifies the vapor generated from the plating tank and the water washing tank, a constant purification amount corresponding to the limit capacity of the vaporization tank is maintained from the beginning. There is a problem that it is difficult to reuse.

In addition, although pollutants are removed from the scrubber, which is an air purification device, and discharged to the outside, residual substances not removed from the removal device remain, and these are continuously discharged into the atmosphere, thereby causing air pollution.

In addition, in the case of an existing dust collector that oxidizes or absorbs and removes harmful substances contained in the waste gas by spraying a cleaning solution into the waste gas introduced into the waste gas, the inside of the dust collector is repeatedly exposed to the harmful substances of the waste gas, so the more the use time elapses, the more Due to the problem that the durability and purification performance of the dust collector are remarkably deteriorated, there is a problem that pollutants are discharged into the atmosphere while remaining substances remain.

Korean Patent Publication No. 10-1910853 Korean Patent Publication No. 10-2056088

The present invention has been devised to solve the above problems, and an object of the present invention is to treat the waste gas generated inside the plating tank performing the plating process, the generated waste gas is primarily treated through scrubber equipment, and , The waste gas discharged to the atmosphere is collected and cooled secondarily, the generated condensate is stored in the cyclone condensing device, and thirdly, a cyclone device is added to the cyclone condensing device to purify the remaining waste gas, A cyclone condensing device for waste gas treatment of the plating tank that efficiently treats the waste gas of the plating tank through the repeated process of discharging it into the atmosphere, removing the remaining contaminants through the filtering device, and circulating it back to the plating tank. It relates to high-efficiency scrubber equipment having.

will be described below, and will be learned by way of example of the present invention. Further, the objects and advantages of the present invention may be realized by means and combinations indicated in the claims.

The present invention is a means for solving the above problems, the present invention is to discharge the waste gas discharged from the plating tank performing the plating process to the upper side from the bottom of the scrubber by a blower blower; By the cleaning liquid flowing into the upper end of the scrubber and freely falling to the lower end, the waste gas to be cleaned flows upward, is discharged from the upper discharge side of the scrubber, and flows into the cooling unit through the discharge duct, and the generated condensate is a cyclone stored in the condenser; A cyclone that flows downward along the inner periphery from the inlet of the cyclone condensing device and flows upward in the opposite direction from the central part of the lower end is mounted inside the cyclone condensing device, purifies the residual waste gas and discharges it to the atmosphere. ; so that the condensed water flowing out from the cyclone condensing device passes through the filtering device and circulates back to the plating bath; It is to provide a high-efficiency scrubber equipment having a cyclone condensing device for treating waste gas in the plating tank.

As described above, an object of the present invention is to provide a high-efficiency scrubber device that collects the air discharged through the scrubber and improves the air pollutant purification ability of the scrubber through a condensation process.

In addition, the waste gas discharged to the atmosphere is collected, cooled (condensed), and then discharged through the cyclone process after purification, and the contaminated condensate is filtered and the remaining pollutants are removed and reused in the process. is to provide

In addition, since condensed water can be recycled as process water, the present invention provides a system that is helpful in water conservation and water pollution.

1 is a schematic view showing a high-efficiency scrubber equipment having a cyclone condensing device for treating waste gas in a plating bath according to the present invention.
Figure 2 is a schematic view showing a cyclone mounted inside the cyclone condensing device according to the present invention.

Before describing various embodiments of the present invention in detail, it will be understood that the application is not limited to the details of the construction and arrangement of components described in the following detailed description or shown in the drawings. The invention is capable of being embodied and practiced in other embodiments and of being carried out in various ways. Also, device or element orientation (eg, “front”, “back”, “up”, “down”, “top”, “bottom”) The expressions and predicates used herein with respect to terms such as ", "left", "right", "lateral", etc. are used merely to simplify the description of the invention, and the associated apparatus Or it will be appreciated that it does not simply indicate or imply that an element must have a particular orientation. Also, terms such as “first” and “second” are used in this application and the appended claims for the purpose of description and are not intended to indicate or imply relative importance or spirit.

In order to achieve the above object, the present invention has the following features.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to conventional or dictionary meanings, and the inventor should properly understand the concept of the term in order to best describe his invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept consistent with the technical idea of the present invention.

Therefore, the configuration shown in the embodiments and drawings described in the present specification is merely the most preferred embodiment of the present invention and does not represent all of the technical spirit of the present invention, so at the time of the present application, various It should be understood that there may be equivalents and variations.

Looking at an embodiment according to the present invention,

The waste gas discharged from the plating tank 10 performing the plating process is discharged from the lower end of the scrubber 30 to the upper side by the blower 20;

By the cleaning liquid flowing into the upper end of the scrubber 30 and freely falling to the lower end, the waste gas to be cleaned flows upward, is discharged from the upper discharge side of the scrubber 30, and is discharged from the cooling unit through the discharge duct 40 is introduced into (50), the generated condensate and residual waste gas is introduced into the cyclone condensing device (60);

In the interior of the cyclone condensing device 60, the cyclone device 70 is integrally formed with the circular inner cylinder 71 and the outer cylinder 72 in which the annular cylindrical diameter is gradually reduced by being spaced apart from the circular inner cylinder 71 at regular intervals. 60 is formed, and the residual waste gas and condensed water flow downwardly to the cyclone device 70 by high-speed centrifugal force rotational flow together, and from the end of the outer cylinder 72 to the reverse direction of the inner cylinder 71. It is formed to flow in an upward direction along the inside, and the harmful substances of the residual waste gas separated by the cyclone device 70 are included in the condensed water at the lower end of the cyclone condensing device 60 and stored, and the cyclone The gaseous phase purified by the device 70 is transferred to the exhaust duct 40 and discharged to the atmosphere,

The condensed water flowing out from the cyclone condensing device 60 is filtered by the filtration device 80 and circulated back to the plating tank 10; It relates to a high-efficiency scrubber equipment having a cyclone condensing device for the treatment of waste gas in the plating bath.

In addition, basically, a high temperature of the waste gas temperature of 35 ° C to 95 ° C is used during the plating process, but in the plating process with a relatively low temperature, in order to contain a relatively large amount of harmful gas substances contained in the waste gas in the condensate, ) by adding a washing water heating device 90 for supplying the washing liquid to the steam line 91 using the waste heat of the facility to heat the washing liquid, and to the upper end of the scrubber 30 by the washing pump 92. spraying the used cleaning solution; The sidewalls of the scrubber 30 and the washing water heating device 90 penetrate each other to form the same water level.

In addition, a gas sensor 45 for measuring a nitrogen compound or a sulfur compound is attached to a long extension part on the discharge side of the scrubber 30 to measure the harmful components of the exhaust gas, and when more than a set amount of harmful gas is detected By increasing the temperature of the washing water supplied from the washing water heating device 90 to increase the saturated water vapor of the harmful gas, the amount of condensed water generated from the cooling unit 50 is increased to increase the amount of harmful gas contained in the condensed water to increase; is done.

Hereinafter, a high-efficiency scrubber equipment having a cyclone condensing device for treating waste gas in a plating bath according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 2 .

1 is a schematic diagram showing a high-efficiency scrubber equipment having a cyclone condensing device for treating waste gas in a plating bath according to the present invention, and FIG. 2 is a schematic diagram showing a cyclone mounted inside the cyclone condensing device according to the present invention,

In the present invention, the waste gas discharged from the plating tank performing the plating process is primarily treated through a scrubber equipment, the condensate is secondarily cooled and stored in a cyclone condensing device, and thirdly the cyclone condensate A high-efficiency scrubber equipment having a cyclone condensing device for treating waste gas in the plating tank that efficiently treats the waste gas of the plating tank through a repeating process of adding a cyclone device to the device, treating the residual waste gas, and circulating the condensate back to the plating tank it's about

For this,

The waste gas discharged from the plating tank 10 performing the plating process is discharged from the lower end of the scrubber 30 to the upper side by the blower 20 .

The waste gas flowing in from the lower end of the scrubber 30 is discharged upward while flowing upward from the inside.

In addition, the cleaning liquid flows into the upper end of the scrubber 30 and freely falls to the lower end, and the waste gas is washed from the cleaning liquid and flows upward of the scrubber 30 .

The waste gas generated from the plating tank 10 passes through the scrubber 30, is not completely purified, and there may be residual waste gas, so the present invention includes as a technical feature to sufficiently purify the residual waste gas.

To this end, the residual waste gas discharged from the upper discharge side of the scrubber 30 is introduced into the cooling unit 50 through the discharge duct 40 without discharging to the atmosphere.

The cooling unit 50 introduces external air to cool the waste gas at 30° C. to 70° C. in the range of 15° C. to 20° C., and the condensed water generated in the cooling process together with the remaining waste gas through the exhaust duct 40, It is introduced into the cyclone condensing device (60).

Here, as a technical feature of the present invention, the cyclone condensing device 60 will be described as follows.

Inside the cyclone condensing device 60, the cyclone device 70 is formed integrally with the circular inner cylinder 71 and the outer cylinder 72, which is spaced apart from each other at a predetermined interval and the annular cylindrical diameter is gradually reduced.

The condensed water introduced into the inlet of the cyclone condensing device 60 and the residual waste gases having various types of weights and sizes contained in the air form a spiral vortex inside the cyclone and rotate while generating centrifugal force, centrifugal force or other Due to the cause, it is free-falling by gravity through various mechanisms such as cohesion and bonding between dusts, dispersion of turbulence and collision, etc.

In order to efficiently collect the condensed water and residual waste gas, the diameter of the inlet is formed in a funnel shape at the lower end of the cyclone to be somewhat narrow.

The condensed water and residual waste gas generated in the cooling process flow downwardly to the cyclone device 70 by high-speed centrifugal force rotational flow together, and in this process, the fine harmful gas phase contained in the residual waste gas is separated, and downward It falls, and the separated micro-toxic gas phase is precipitated in condensate water.

Here, the gas phase purified by the cyclone device 70 is formed to flow in an upward direction along the inside of the inner cylinder 71 in the reverse direction from the end of the outer cylinder 72, and to the discharge duct 40 transported and discharged into the atmosphere.

At the same time, harmful substances of the residual waste gas separated by the cyclone device (70) are stored in condensed water at the lower end of the cyclone condensing device (60).

The cyclone 70 is mounted inside the cyclone condensing device 60, and is formed to be submerged in condensed water, which increases the condensed water efficiency of the cyclone condensing device 60, and also for space utilization. will be.

Here, the condensed water stored at the lower end of the cyclone condensing device 60 flows out, passes through the filtering device 80, and circulates back to the plating tank 10; it will be done

The filtering device 80 is intended to filter residual harmful substances in the condensed water circulated to the plating bath 10 by adding a filter unit.

Another technical feature of the present invention is to control the temperature of the cleaning liquid supplied to the scrubber in order to increase the purification efficiency of the waste gas to be cleaned in the scrubber.

To this end, a gas sensor 45 is attached to a long extension part on the discharge side of the scrubber 30 to measure harmful components of the exhaust gas, where the exhaust gas is primarily purified by the scrubber 30 However, since the exhaust gas may not meet the environmental standard enough to be discharged directly into the atmosphere, the component of the exhaust gas is detected from the gas sensor 45 in order to increase the efficiency thereof.

At this time, when more than a set amount of harmful gas is detected, the temperature of the washing water supplied from the washing water heating device 90 is increased to increase the saturated steam of the noxious gas, and generated from the cooling unit 50 . To increase the amount of condensed water to increase the amount of harmful gas contained in the condensed water; characterized in that made.

At this time, the sidewalls of the scrubber 30 and the washing water heating device 90 penetrate each other to form the same water level, so that the washing liquid supplied from the washing water heating device 90 is supplied to the inside of the scrubber 30 This is to ensure that the volume of the cleaning solution remains the same.

As described above, although the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited thereto, and the technical spirit of the present invention and the following by those of ordinary skill in the art to which the present invention pertains. Of course, various modifications and changes are possible within the scope of equivalents of the claims to be described.

10: plating tank
20: blow blower
30: scrubber
40: exhaust duct
45: gas sensor
50: cooling unit
60: cyclone condensing device
70: cyclone
80: filter
90: washing water heating device
91: steam line
92: cleaning pump

Claims (3)

The waste gas discharged from the plating tank 10 performing the plating process is discharged from the lower end of the scrubber 30 to the upper side by the blower 20;
By the cleaning liquid flowing into the upper end of the scrubber 30 and freely falling to the lower end, the waste gas to be cleaned flows upward, is discharged from the upper discharge side of the scrubber 30, and is discharged from the cooling unit through the discharge duct 40 is introduced into (50), the generated condensate and residual waste gas is introduced into the cyclone condensing device (60);
In the interior of the cyclone condensing device 60, the cyclone device 70 is integrally formed with the circular inner cylinder 71 and the outer cylinder 72 in which the annular cylindrical diameter is gradually reduced by being spaced apart from the circular inner cylinder 71 at regular intervals. 60 is formed, and the residual waste gas and condensed water flow downwardly to the cyclone device 70 by high-speed centrifugal force rotational flow together, and from the end of the outer cylinder 72 to the reverse direction of the inner cylinder 71. It is formed to flow in an upward direction along the inside, and the harmful substances of the residual waste gas separated by the cyclone device 70 are included in the condensed water at the lower end of the cyclone condensing device 60 and stored, and the cyclone The gaseous phase purified by the device 70 is transferred to the exhaust duct 40 and discharged to the atmosphere,
The condensed water flowing out from the cyclone condensing unit 60 is filtered by the filtration unit 80 and circulated to the plating bath 10 again;
In order to contain a relatively large amount of harmful gas substances contained in the waste gas in the condensate, a washing water heating device 90 for supplying a washing solution to the scrubber 30 is added, and the washing solution is heated with a steam line 91, and the washing solution is washed. spraying the heated cleaning liquid to the top of the scrubber 30 by means of a pump 92;
The sidewalls of the scrubber 30 and the washing water heating device 90 penetrate each other to form the same water level;
A gas sensor 45 for measuring a nitrogen compound or a sulfur compound is attached to a long extension part on the discharge side of the scrubber 30 to measure the harmful components of the exhaust gas, and when the harmful gas above a set amount is detected
By increasing the temperature of the washing water supplied from the washing water heating device 90 to increase the saturated water vapor of the harmful gas, the amount of condensed water generated from the cooling unit 50 is increased to increase the amount of harmful gas contained in the condensed water To increase; High-efficiency scrubber equipment having a cyclone condensing device for plating bath waste gas treatment, characterized in that it is made.








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