KR20190067552A - Purification system combined with pretreatment device and photocatalyst or non-photocatalytic reaction device - Google Patents

Abstract

The present invention relates to a purification system in which a pretreatment device and a photocatalytic or a non-photocatalytic reaction device are combined to enhance the purification efficiency of various complex pollutants and to best respond to enhanced pollutant emission control. The purification system of the present invention in which the pretreatment device and the photocatalytic or non-photocatalytic reaction device are combined includes: a pretreatment unit including a water spray tank, a precipitation tank, a filter tank, and a temperature control tank; and a catalytic reaction unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a purification system combined with a pretreatment apparatus and a photocatalytic or non-photocatalytic reaction apparatus,

The present invention relates to a pretreatment device and a photocatalytic or non-photocatalytic reaction device for purifying various kinds of harmful pollutants such as paint mist generated from large paint facilities and manufacturing facilities such as shipyards and automobiles, VOCs emitted from vessels and incinerators, The present invention relates to a combined purification system, and more particularly to a combined purification system, which is capable of collecting, separating and filtering fine particulate pollutants by spraying water on the pollutants and adjusting the temperature of the high- And a photocatalytic device or a non-photocatalytic device is installed at the rear end to integrate the pretreatment device for increasing the efficiency of the reaction in the process, and the fine-scale coating facility, the incineration facility, Or solid particles contained in contaminants such as ultrafine paint mist or VOCs And the volatile organic compounds such as carcinogens and odorous substances are decomposed and purified by the photocatalyst or the non-photocatalytic reaction unit at the rear end to improve the purification efficiency of various complex pollutants, And a photocatalytic or non-photocatalytic reaction device is combined with a pretreatment device capable of optimally coping with emission control of the photocatalyst.

In general, painted mist, volatile organic compounds (VOCs), strong carcinogenic chemical substances, or odor are discharged together with coatings, automobile painting facilities, incineration facilities, and shipyards. It is known that the particles are discharged into a large amount of minute dust or ultrafine paint mist to cause environmental pollution, and also, when they come in contact with or inhale the human body, they cause serious dysfunction and diseases.

Accordingly, a number of prior art techniques for removing paint mist and VOCs contained in such coating facilities have been disclosed. For example, Korean Patent Registration No. 10-1657746 discloses a method of adsorbing volatile organic compounds The present invention relates to a portable type processing apparatus that removes volatile organic compounds and discharges the volatile organic compounds by moving them to a remote regenerative incinerator. By applying the processing method using the same, volatile organic compounds can be effectively volatilized Korean Patent Registration No. 10-1512648 discloses a system and a method for treating a volatile organic compound generated in a large-scale painting facility including a shipyard for treating an organic compound in a painting booth of an automobile assembly factory, Paint in spray form Various particulate pollutants and gaseous pollutants, such as volatile organic compounds, such as occurs Jiangxi tacky paint particles, which discloses an apparatus for removing dust in a dry manner.

Korean Patent Laid-Open Publication No. 10-2017-0119125 discloses an automobile which can effectively remove particulate matter, volatile organic compounds, and odor contained in exhaust discharged from a paint booth, Disclosed is a particulate matter and volatile organic compound treatment system for paint coating.

However, the above-mentioned prior arts are not a method of decomposing and purifying contaminants in gas phase such as volatile organic compounds, but adsorbing and purifying contaminants by using activated carbon or activated carbon filter, so that the filter is saturated or used for a long time, If the performance deteriorates, there is a problem that the contaminants such as volatile organic compounds can not be properly cleaned, and since the adsorption capacity of the filter is limited, it is saturated after a certain period of time, There was a problem.

In particular, if the replacement period is missed, the pollutant adsorbed on the filter is again discharged to the outside, thereby failing to exhibit the original function of the purifier. In particular, there is a problem in that a paint mist containing various ultrafine dusts or a volatile organic compound Or a complex pollutant such as a high-concentration odor or carcinogen can not be properly decomposed and purified.

Conventional pretreatment methods or air purification techniques include microbial decomposition, biofiltering, catalytic oxidation, combustion, wet scrubbing, activated carbon or activated carbon adsorption, filter systems, water spray, RTO (Regenerative Thermal Oxidizer ), Plasma, Scrubber, Anion device, Chemical purification method, UV lamp, Electrolysis, Photocatalyst and Photocatalyst. However, it is necessary to cope with various complex pollutants emitted from large scale coating facilities and manufacturing facilities. Optimized purification techniques that can be used have not yet been disclosed.

SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned problems, and it is an object of the present invention to solve the above-mentioned problems, and to provide a method of collecting fine dust and ultrafine dust by spraying water on a pollutant, A pretreatment unit for filtering and purifying fine particulate matter and a photocatalyst for decomposing gaseous contaminants such as volatile organic compounds into a photochemical reaction by increasing the reaction efficiency of the photocatalyst or photocatalytic reaction unit installed at the rear end by controlling the temperature, Or a photocatalytic reaction device is combined with a pretreatment device for improving the purification efficiency of various complex pollutants discharged from a large-scale painting facility, incineration facility, ship's ship and manufacturing facility, etc., and a purification system .

As a means to accomplish this purpose, it is provided on one side of coating facilities such as shipyard, ship, automobile, etc., and manufacturing facilities, and is used to prevent paint pollution or strong carcinogenic chemicals And a water supply port through which water is introduced is formed on one side of the purifying system, and a plurality of spray nozzles are spaced apart from each other by a predetermined distance A pair of sprayers are branched and a drain port connected to the lower side of the water tank through a main drain pipe and draining water to the side and an outlet for discharging the sediment are formed at the bottom of the water spray tank, A sedimentation tank for separating contaminants into water and sediment; A second exhaust pipe and an auxiliary drain pipe are connected to the bottom of the filter tank, a filter tank having a filter therein, a second exhaust pipe connected to the bottom of the filter tank, and a third exhaust pipe and an auxiliary drain pipe A pretreatment unit connected to the temperature regulating tank and capable of controlling temperature and humidity, and a third exhaust pipe connected to the rear end of the temperature regulating tank, wherein a plurality of photocatalysts or non-photocatalytic reactions A photocatalyst reaction unit having a photocatalyst or a photocatalyst reaction unit in which a mediator is installed to decompose vapor pollutants such as volatile organic compounds and discharge the pollutants such as volatile organic compounds to the outside through an outflow port, Lt; / RTI >

The water spray tank has a structure in which a plurality of sprayers are horizontally, vertically, or slantly arranged to facilitate collection of moisture and particulate pollutants introduced into the water tank through the inlet and the water inlet, And a photocatalytic or non-photocatalytic reaction device is combined with the pretreatment device.

The filter tank is composed of a plurality of vertically or horizontally stacked vertically or horizontally arranged demister filters each having a plurality of meshes of a mesh network and filled with a fiber material therebetween. Water and foreign matter from the gas phase contaminants introduced from the water tank And the separated moisture and foreign substances are discharged to the settling tank again through the auxiliary drainage pipe. The present invention relates to a pretreatment apparatus and a purification system including a photocatalyst or a photocatalytic reaction device, .

The photocatalytic or non-photocatalytic reaction device is formed by coating a photocatalytic reaction material such as titanium dioxide, which receives light on its surface and generating a photocatalytic reaction, or generates a reaction radical by oxygen and moisture in the air and a redox reaction without receiving light A plurality of reaction media coated with a non-photocatalytic material such as titanium oxide, nickel, platinum, and palladium compounds are installed horizontally, vertically, or slantwise, or are multi-staged at a predetermined interval by mixing them, and a photocatalytic or non- The device provides a combined purification system.

The reaction medium may have various shapes such as a screw shape, a circle shape, a square shape, or a polygonal shape corresponding to the shape of the photocatalyst or the photocatalytic reaction device. The reaction medium may have a reaction radical (not shown) And a photocatalytic or non-photocatalytic reaction device is combined with the pretreatment device, wherein the photocatalytic or non-photocatalytic reaction device is combined with the photocatalytic or non-photocatalytic reaction device.

According to the present invention, there is an excellent effect in purifying paint mist that is discharged from a shipbuilding machine, a painting facility of an automobile, or an incineration facility, a volatile organic compound contained therein, pollutants such as strong carcinogenic substances and odors, The purification efficiency is further improved by performing a pretreatment process for separating and purifying fine or ultrafine particulate pollutants using an injection device. Further, by maintaining the temperature of the purification apparatus at a constant level, the photocatalyst or the photocatalytic reaction The reaction efficiency of the apparatus is increased and the purification efficiency is further improved.

In addition, the water used in the water injection device is purified and recycled by the photocatalytic reaction device, and the precipitated particulate pollutants are converted into a cake to minimize the volume and incinerate, thereby reducing management cost and pollution-free treatment.

1 is a configuration diagram of a purifying system according to an embodiment of the present invention;
2 is a perspective view of a reaction media according to one embodiment of the present invention.
FIG. 3 is a perspective view of a cross-type photocatalyst or a photocatalytic reaction apparatus according to an embodiment of the present invention, and a rectangular reaction medium without a through hole. FIG.
4 is a longitudinal sectional view of a screw-type photocatalyst or a photocatalytic reaction device according to an embodiment of the present invention.
FIG. 5 is a perspective view of a through-hole-free screw-type reaction medium according to an embodiment of the present invention; FIG. (a: no wrinkle structure, b: wrinkled structure)
FIG. 6 illustrates an example of the installation of a screw-type reaction medium according to an embodiment of the present invention; FIG. (a: horizontal type, b: inclined type)

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

As shown in FIGS. 1 to 3, the present invention can be applied to coating facilities such as shipyards, marine vessels, automobiles, etc., or to one side of a manufacturing facility, The purification system 300 includes an inlet 1 through which contaminants are introduced and a water inlet 2 through which water is introduced. A water spray tank 5 having a plurality of spray nozzles 3 spaced by a predetermined distance and branched from the water spray tank 5 and a main water discharge pipe 6 And a discharge port 9 for discharging the sediment 8 is formed at the bottom of the main water discharge pipe 6 so that the pollutant introduced from the water discharge tank 5 through the main discharge pipe 6 A sedimentation tank 10 for separating the water and the precipitate 8, A second discharge pipe 12 and an auxiliary drain pipe 13 are connected to the bottom of the spray tank 5 by a first discharge pipe 11 and a filter 14, A third outlet pipe 16 and an auxiliary drain pipe 13 are connected to the rear end of the filter tank 15 and a bottom of the filter tank 15 and a second outlet pipe 12, A pretreatment unit 100 including a temperature control tank 18 having a device 17 and capable of controlling temperature and humidity and a third discharge pipe 16 connected to a rear end of the temperature control tank 18, And a photocatalytic or non-photocatalytic reaction device (21) in which a plurality of photocatalysts or non-photocatalytic reaction media (19) are installed in the inside of the photocatalytic reaction device to decompose gaseous pollutants such as volatile organic compounds and discharge the gaseous pollutants through an outlet (20) And a catalyst reaction unit 200.

The water spray tank 5 is provided with a plurality of sprayers 4 arranged horizontally, vertically or inclinedly so as to facilitate the collection of moisture and particulate pollutants introduced into the water through the inlet 1 and the water inlet 2 Or a multi-stage structure in which these are mixed.

The filter tank 15 is constructed by vertically or horizontally stacking a plurality of demister filters 14 in which a plurality of mesh networks are stacked and a fiber material is filled therebetween. The water and foreign substances are separated from the gaseous phase contaminants and then discharged to the temperature control tank 18 through the second discharge pipe 12. The separated water and foreign substances are discharged through the auxiliary drain pipe 13 again into the settling tank 10 .

The temperature regulating tank 18 is structured such that a plurality of temperature regulating devices 17, which are heated and cooled by an external power source, are vertically arranged in multi-stages in order to facilitate the treatment of the moisture contained in the gaseous contaminants .

3, 4 and 6, the photocatalytic or non-photocatalytic reaction device 21 is coated with a photocatalytic reaction material such as titanium dioxide (TiO 2) which receives light on its surface and causes a photocatalytic reaction, A plurality of reaction media 19 coated with a photocatalyst material such as titanium phosphate, nickel, platinum, and palladium compounds that generate reaction radicals by oxygen and moisture in the air and a redox reaction in the air without receiving light are horizontally, vertically or inclined Or they are installed in multiple stages at regular intervals.

As shown in FIG. 2, the reaction medium 19 has various shapes such as a screw shape, a circle shape, a square shape or a polygonal shape corresponding to the shape of the photocatalytic or non-photocatalytic reaction device 21, (Not shown) to form a plurality of through holes 22 for circulating reaction radicals generated by reaction radicals or photocatalytic reactions generated, or to have a structure in which the through holes 22 are not formed as shown in FIG. 5 .

3, the photocatalytic or non-photocatalytic reaction device 21 may be a cross type in which the reaction media 19 are staggered at regular intervals, The volatile organic compound flowing through the third discharge pipe 16 is not decomposed while circulating through the reaction medium.

1, the purifying system 300 according to the present invention includes a water spray tank (not shown) in which a sprayer 4 is installed in an interior of the tank, through which polluted air and water are supplied through an inlet 1 and a water inlet 2 A filter tank 15 connected to a lower portion of the filter tank 15 through a main drain pipe 6 and a first drain pipe 11 on a side portion thereof; And a photocatalytic or non-photocatalytic reaction device 21 connected to the temperature control tank 18 and the third discharge pipe 16, The water introduced into the sprayer 4 through the water supply port 2 of the spray nozzle 5 is sprayed to the inside through the spray nozzle 3 and the contaminated paint mist or pollutant generated in the paint facility or the incineration facility flows into the inlet 1 The particulate pollutants contained in the pollutants are aggregated with the water sprayed from the spray nozzles 3, Drops into the bottom of the water spray tank 5 and flows into the lower sedimentation tank 10 through the main drainage pipe 6 so that the solid particles sink to the bottom of the sedimentation tank 10.

At this time, the fine particulate pollutant not collected in the water spray tank 5 moves upward, moves to the filter tank 15 through the first discharge pipe 11, and then is filtered by the inner demister filter 14 The water is transferred to the temperature regulating tank 18 through the second exhaust pipe 12 and heated and cooled by the temperature regulating device 17 installed therein to process the water while the filter tank 15 and the temperature regulating tank 18 are introduced into the settling tank 10 again through the auxiliary drainage pipe 13.

The gaseous contaminants that have been treated with water in the temperature control tank 18 are introduced into the bottom of the reactor 21 through the third discharge pipe 16. At this time, a plurality of reaction media 19 Is decomposed by reacting with the reaction radicals generated by the photocatalyst or the non-photocatalytic reaction while flowing to the upper part of the reactor 21 through the through holes 22 thereof.

Since a plurality of sprayers 4 installed inside the water spray tank 5 are vertically installed in multiple stages and a plurality of spray nozzles 3 are installed at predetermined intervals in each sprayer 4, The particulate pollutant flowing through the water spray tank 5 is moved to the upper part of the water spray tank 5 and is collected in multiple stages by the multi-stage sprayer 4, The fine particulate pollutants are again introduced into the filter tank 15 and filtered by the demister filter 14 to be separated.

At this time, the particulate pollutant collected and dropped in the water spray tank 5 flows into the sedimentation tank 10 through the main drainage pipe 6 and sinks to the bottom. After a certain period of time, The waste water separated from the precipitate 8 is discharged to the outside through the drain port 7. At this time, when the waste water is purified by the separate photocatalytic reaction device, It is possible to perform pollution-free processing.

Since the filter tank 15 has a vertically multi-stage structure in which a plurality of demister filters 14 in which a plurality of mesh networks are overlapped and a fiber material is filled therebetween are formed in the filter tank 15, the finer particles introduced from the water spray tank 5 The pollutants are subjected to secondary separation while passing through the multi-stage filter 14, and moisture generated at this time is discharged to the settling tank 10 through the auxiliary drain pipe 13, The gaseous contaminants such as volatile organic compounds are introduced into the temperature control tank 18 through the second discharge pipe 12.

Since the plurality of temperature regulating devices 17 are vertically arranged in multiple stages in the temperature regulating tank 18, the gaseous contaminants introduced into the inside of the temperature regulating tank 18 through the second exhaust pipe 12 are supplied to the multi- The water treatment is performed more easily, and the reduction of the moisture further improves the reaction efficiency of the reaction device 21 installed at the rear end portion.

Here, the reaction apparatus 21 includes a plurality of reaction media 19 coated with a photocatalyst material of titanium dioxide that generates a photocatalytic reaction upon receiving light, or a photocatalytic material that generates a reaction radical by a redox reaction without light, The contaminants in the gaseous phase flowing from the temperature control tank 18 flow through or pass through the reaction media 19 arranged in multiple stages, The reaction time with the reaction radical is increased. As a result, the reaction efficiency is further improved, and gaseous contaminants such as volatile organic compounds are further decomposed.

At this time, since a plurality of through holes 22 for circulating reaction radicals are formed on the surface of the reaction medium 19, gaseous contaminants such as volatile organic compounds are discharged through the through holes 22 to the outlet 20 ), And reacts with the reaction radical while flowing and circulating. At this time, the contaminants in the gaseous phase are delayed in flow as they pass through the through hole (22), thereby increasing the reaction time with the reaction radical, The better the degradation and purification of pollutants.

As described above, the purifying system 300 of the present invention has an excellent effect in decomposing and purifying strong carcinogenic substances such as paint mist and volatile organic compounds contained therein, odor and the like discharged from shipyards or automobile painting facilities, The purification efficiency is further improved by carrying out a pretreatment process for separating fine or ultrafine particulate pollutants using an injection device. Further, by maintaining the temperature of the purification apparatus at a constant level, the photocatalyst or the photocatalytic reaction device It is possible to increase the reaction efficiency of the adsorbent 21 and further improve the purification efficiency.

In addition, the present invention provides an optimized purification apparatus for decomposing and purifying volatile organic compounds or complex contaminants discharged from a large-scale manufacturing facility including a coating facility, a semiconductor manufacturing facility, and an incineration facility of a shipyard or an automobile, It is possible to respond to the emission regulation of the pollutant to be reinforced most rationally.

1: inlet 2: water inlet 3: spray nozzle 4: atomizer 5: water spray 6: main drain 7: drain 8: sediment 9: drain 10: settler 11: first drain 12: second drain 13: The present invention relates to a photocatalytic reaction apparatus and a photocatalytic reaction apparatus which are used in a photocatalytic reaction apparatus and a photocatalytic reaction apparatus. Reactor 300: Purification system

Claims (5)

It is provided at one side of painting facility or manufacturing facility such as shipyard, ship's year, automobile, etc. to decompose and purify painted pollutant, strong carcinogenic chemicals and odor which occurred during paint, ship's year or manufacturing process In the purifying system 300, the purifying system 300 includes an inlet 1 through which contaminants are introduced and a water inlet 2 into which water is introduced, and a plurality of spray nozzles 3 are formed therein. And a drain port (7) connected to the lower side of the water spray tank (5) by a main drain pipe (6) and draining water to the side part. The water spray tank (5) And a discharge port 9 for discharging the sediment 8 to the bottom part of the main water discharge pipe 6. The sedimentation tank 10 separates contaminants flowing into the main water discharge pipe 6 from the water spray tank 5 into water and sediment 8, And a first discharge pipe (11) at one side of the water spray tank (5) A filter tank 15 in which a second discharge pipe 12 and an auxiliary drain pipe 13 are connected to the bottom and to which a filter 14 is attached; And a temperature control tank 18 connected to the discharge pipe 12 and connected to the third discharge pipe 16 and the auxiliary drain pipe 13 at the rear end thereof and having a temperature control device 17 therein, A plurality of photocatalytic or non-photocatalytic reaction media 19 are provided in the interior of the pre-treatment unit 100, which is connected to the rear end of the temperature control tank 18 by a third discharge pipe 16, And a catalytic reaction part (200) provided with a photocatalyst or a photocatalytic reaction device (21) for decomposing gas phase pollutants such as volatile organic compounds and discharging the pollutants to the outside through an outlet (20). A photocatalytic reaction system combined with a purification system. The water spraying apparatus according to claim 1, wherein the water spray tank (5) comprises a plurality of sprayers (4) horizontally, vertically and horizontally so as to facilitate the collection of moisture and particulate pollutants introduced into the water through the inlet (1) The photocatalyst or the photocatalytic reaction device is combined with the pretreatment device and the photocatalytic or non-photocatalytic reaction device. 2. The water treatment system according to claim 1, wherein the filter tank (15) has a structure in which a plurality of demister filters (14) are formed by vertically or horizontally stacking a plurality of mesh webs The water and the foreign substances are separated from the gaseous contaminants flowing from the gas-liquid separator 5 and then discharged to the temperature control tank 18 through the second discharge pipe 12. The separated water and foreign substances are discharged to the auxiliary discharge pipe 13 And then discharged to the settling tank (10) again through the photocatalyst or photocatalytic reactor. The photocatalytic or non-photocatalytic reaction device (21) according to claim 1, wherein the photocatalytic or non-photocatalytic reaction device (21) is coated with a photocatalytic reaction material such as titanium dioxide (TiO 2) A plurality of reaction media 19 coated with a non-photocatalytic substance such as titanium, nickel, platinum, or palladium compound that generates reaction radicals by moisture and oxidation-reduction reaction are installed horizontally, vertically, or slantwise, And a photocatalytic or non-photocatalytic reaction device is combined with the pretreatment device. The reaction medium (19) according to claim 4, wherein the reaction medium (19) has various shapes such as a screw shape, a circle shape, a square shape or a polygonal shape corresponding to the shape of the photocatalyst or photocatalytic reaction device ) Or a plurality of through holes (22) for circulating reaction radicals generated by the reaction radicals generated by the reaction with the photocatalyst or the non-photocatalytic reaction are formed, or the through holes (22) are not formed. A purification system coupled to a reaction device.

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