KR101339920B1 - Hybrid system using photo-catalysts - Google Patents

Abstract

The present invention is a hybrid system using a photocatalyst, and more specifically, by removing and removing fine dust, such as PM2.5 generated in large-scale, small and medium-sized businesses such as petrochemical complexes, volatile organic compounds and odors generated in the industrial complex, and the like 700 It relates to a hybrid system using a photocatalyst, characterized in that a heater of 400 ° C or less is used without using an incinerator having a high temperature of not less than ° C.
The present invention for achieving the above object is composed of a dust collecting module in which fine dust and volatile organic compounds are introduced, a dust filter for removing PM 2.5 fine dust and a concentration filter for controlling the flow amount of residual fine dust and volatile organic compounds UV module for pulverizing filter module, volatile organic compound and odor by ultraviolet irradiation, photocatalyst filter module for absorbing and removing residual volatile organic compounds and odor after UV irradiation from the UV module, and residual volatile that has passed through the photocatalyst filter module It comprises a concentrated rotor module having a disk coated with a low temperature oxidation catalyst for adsorbing and concentrating organic compounds and odors, and an exhaust module for exhausting the removed gas to the outside.

Description

Hybrid system using photocatalyst {HYBRID SYSTEM USING PHOTO-CATALYSTS}

The present invention is a hybrid system using a photocatalyst, and more specifically, by removing and removing fine dust, such as PM2.5 generated in large-scale, small and medium-sized businesses such as petrochemical complexes, volatile organic compounds and odors generated in the industrial complex, and the like 700 It relates to a hybrid system using a photocatalyst, characterized in that a heater of 400 ° C or less is used without using an incinerator having a high temperature of not less than ° C.

Generally, the exhaust gas emitted from petroleum chemical companies and paint manufacturers in the refining process and painting process is accompanied by volatile organic compounds (VOCs) as well as bad odors and fine dusts as pollutants that pollute the surrounding environment It may cause bad odor, respiratory disorder or smog.

On the other hand, under the domestic law, petrochemicals, organic solvents and other substances having a vapor pressure of 10.3 kilopascals (or 1.5 psia) or higher among hydrocarbons are notified by the Minister of Environment in consultation with the head of the relevant central administrative agency. Article 1) is regulated and 37 substances and products such as benzene, butadiene and gasoline are regulated according to the Ministry of Environment Notice No. 2001-36 (2001.3.8).

As a method of removing such volatile organic compounds (VOCs), combustion oxidation technology, adsorption technology, biochemical treatment technology, etc. have been proposed. Among them, RTO (Regenerative Thermal Oxidizer) and regenerative catalytic combustion Regenerative catalytic oxidizers (RCOs) have been widely used.

However, the regenerative combustion facility and the regenerative catalytic combustion method have a structure in which the incineration is directly incinerated by contacting at a temperature above the ignition point of the volatile organic compound (VOC) gas, and the temperature in the combustion chamber must be operated at 750 to 1200 ° C. For example, the high temperature of the combustion chamber has caused fire and other safety issues.

The combustion chamber 112 and the lower auxiliary chamber 113 are partitioned by the partition plate 111 provided in the inside of the prior art document 10-0530470 "noxious gas combustion facility" shown in FIG. 1, A main body 110 in which a plurality of connecting ducts 114 connecting the combustion chamber 112 and the auxiliary chamber 113 are vertically provided and an intake line 115 and an exhaust line 116 are formed on the peripheral surface; A storage material 120 provided in the combustion chamber 112; And a distributor 130 installed inside the auxiliary chamber 113 of the main body 110 and sequentially connecting the intake line 115 and the exhaust line 116 to different connecting ducts 114.

The connection duct 114 of the main body 110 extends from the lower surface of the main body 110 to the circumferential surface of the distributor 130 and is connected to a process including volatile organic compounds (VOC) supplied by the distributor 130 Gas to the internal combustion chamber 112 or discharges the exhaust gas combusted in the combustion chamber 112 to the distributor 130. [ The intake line 115 is formed by installing an intake pipe 115a through the central portion of the combustion chamber 112 of the main body 110 in the vertical direction and connecting the lower end of the intake pipe 115 to the upper surface of the distributor 130, The exhaust line 116 is formed by forming an exhaust port 116a on one side of the auxiliary chamber 113 of the main body 110.

The heat storage material 120 is made of a breathable material and is heated as it is burned while passing through the heat storage material 120 and the processing gas containing volatile organic compounds (VOC) supplied through the distributor 130 is heated, And the processing gas is smoothly and completely burned.

The distributor 130 includes an outer case 131 embedded in the diaphragm 111 such that an upper end thereof is connected to the intake line 115 and an outer case 131 installed inside the outer case 131, A rotating body 132 for selectively connecting the exhaust line 116 to the other connecting ducts 114 and a rotating shaft 133 coupled to the rotating body 132 and connected to the driving motor 134.

The outer case 131 is formed in a cylindrical shape and has a plurality of communication holes 131a connected to the connecting duct 114 on its circumference and an opening 131b opened to the auxiliary chamber 113 at a lower portion thereof. .

The rotating body 132 includes an intake connecting portion 132a which is opened in an upper and a lateral direction and is connected to the communication hole 131a of the intake line 115 and the outer case 131, And an exhaust connection part 132b for connecting the line 116 and the communication hole 131a of the outer case 131 is formed. The intake connection part 132a and the exhaust connection part 132b are connected to different communication holes 131a among a plurality of communication holes 131a formed in the outer case 131, The two process gases supplied to the inside of the outer case 131 are supplied to the combustion chamber 112 of the main body 110 through the communication hole 131a and the connecting duct 114 connected thereto after the intake connection portion 132a is taken The exhaust gas generated by burning the process gas in the combustion chamber 112 is exhausted to the lower portion of the outer case 131 through the connecting duct 114 and the exhaust connection portion 132b and is exhausted to the outside through the exhaust line 116 To be discharged.

The rotating body 132 is rotated together with the rotating shaft 133 to function as a switching valve for continuously connecting the intake connection portion 132a and the exhaust connection portion 132b to the other connection ducts 114, So that the connecting duct 114 performs the functions of the intake passage and the exhaust passage alternately.

Accordingly, when the process gas containing volatile organic compounds (VOC) is supplied through the intake line 115 while rotating the rotary shaft 133 by the drive motor 134, the process gas is supplied to the intake port 132a, The exhaust gas is introduced into the combustion chamber 112 through the connecting duct 114 connected to the exhaust connection port 132a and is burnt and exhausted to the exhaust line 116 through the connection duct 114 connected to the exhaust connection part 132b. do.

The rotating body 132 is rotated so that the connecting ducts 114 alternately perform the function of the intake passage and the function of the exhaust passage so that the sucking and exhausting of the process gas are alternately performed through all the connecting ducts 114 So that the combustion heat generated when the process gas is burned is smoothly transferred to the newly supplied process gas. Thus, there is a disadvantage in that a high-temperature incinerator must be used.

Korean Patent No. 10-0530470 "Hazardous Gas Combustion Equipment"

As such, the present invention is to provide a hybrid system using a photocatalyst capable of simultaneously processing fine dust, volatile organic compounds and odors without using a high-temperature incinerator, which may cause a fire, with a heater of 400 ° C. or lower. do.

The present invention for achieving the above object is composed of a dust collecting module in which fine dust and volatile organic compounds are introduced, a dust filter for removing PM 2.5 fine dust and a concentration filter for controlling the flow amount of residual fine dust and volatile organic compounds UV module for pulverizing filter module, volatile organic compound and odor by ultraviolet irradiation, photocatalyst filter module for absorbing and removing residual volatile organic compounds and odor after UV irradiation from the UV module, and residual volatile that has passed through the photocatalyst filter module In order to provide a hybrid system using a photocatalyst comprising a concentrated rotor module having a disk coated with a low temperature oxidation catalyst and an exhaust module for exhausting the removed gas to adsorb and concentrate organic compounds and odors. do.

Hybrid system using a photocatalyst according to the present invention can not only remove PM 2.5 fine dust according to environmental regulations, but also increase the removal efficiency through the flow control of volatile organic compounds, volatile organic using a heater below 400 ℃ It is possible to provide a highly productive harmful gas removal system that can remove the compound and odor at the same time.

1 is a side view showing a conventional noxious gas combustion device.
2 is a schematic diagram of a hybrid system using a photocatalyst as an embodiment according to the present invention.
3 is a detailed view of a concentrating rotor module according to the present invention.

In order to achieve the above object, the present invention provides a dust collecting module 10 into which fine dust and volatile organic compounds are introduced, a dust filter for removing PM 2.5 fine dust, and a concentration for controlling the flow amount of residual fine dust and volatile organic compounds. Filter module 20 consisting of a filter, a UV module 30 for pulverizing the volatile organic compounds and odor by ultraviolet irradiation, and a photocatalyst filter module for adsorption and removal of residual volatile organic compounds and odor after UV irradiation from the UV module ( 40) and a concentrated rotor module 50 having a disk coated with a low temperature oxidation catalyst for adsorbing and concentrating residual volatile organic compounds and odors passed through the photocatalyst filter module and an exhaust module for exhausting the removed gas to the outside. To provide a hybrid system using a photocatalyst, characterized in that it comprises a (60).

The dust collecting module 10 is installed in a waste gas exhaust part such as a petroleum refining process and collects fine dust and volatile organic compounds.

The filter module 20 is composed of a dust filter 21 for removing PM 2.5 fine dust and a concentration filter 23 for controlling the flow of residual fine dust and volatile organic compounds, and the dust filter 21 has a filter surface. It is preferable that the ultrafine fiber layer is formed on the polyester fiber base, but is formed in this bent shape.

In particular, a prefilter composed of a long fibrous nonwoven fabric may be further provided at the front end of the microfine fiber layer.

The concentration filter 23 controls the flow amount of residual fine dust and the volatile organic compound to prevent the waste gas flowing into the UV module 30 from being transferred to the UV module 30, This is to prevent the load from being removed.

On the other hand, the concentration filter 23 has a structure in which the damper can be opened and closed by the hydraulic pressure therein, and during the normal operation, the waste gas flowing into the UV module 30 by opening the damper, the waste gas flowing in When the user exceeds the preset hydraulic pressure, the amount of residual fine dust and volatile organic compounds can be controlled by opening the damper only to the proper opening and closing position by the hydraulic pressure.

In addition, the concentration filter 23 preferably further includes a sensor unit for detecting the pressure of the waste gas introduced therein and a controller for operating the hydraulic pressure.

The UV module 30 is for pulverizing volatile organic compounds and odors by ultraviolet irradiation, and has a structure in which a plurality of UV lamps are disposed in parallel in the longitudinal direction, and a plurality of UV lamps positioned in this way are stacked.

In particular, it is preferable to provide a reflector on four side edges of the inner side of the UV module 30 to induce the irradiation amount to be maximized when the UV lamp is operated.

Meanwhile, in the UV module 30, a catalyst for removing volatile organic compounds (VOC) in which at least one metal selected from transition metals is impregnated into boehmite on the inner surface of the volatile organic compound and odors according to UV irradiation is further improved. It is good to coat.

In addition, the catalyst for removing the volatile organic compound (VOC) is preferably in the amount of 0.1 to 30% by weight of the metal to 100g weight of boehmite.

The photocatalyst filter module 40 is a volatile organic compound (VOC) in which a ratio of silane compound as a binder and TiO 2 as a photocatalyst is 1: 1 to 1: 2, and one or more metals selected from transition metals are impregnated on the inner surface thereof. It is preferred that the catalyst for removal be coated, and further include a sensor for measuring the content of volatile organic compounds and a control unit for controlling the flow of residual fine dust and volatile organic compounds.

The concentrated rotor module 50 is characterized in that it comprises a disk coated with a low-temperature oxidation catalyst to adsorb and concentrate the remaining volatile organic compounds and odor after UV irradiation from the UV module, the concentrated rotor module 50 At the front end, a heater unit 53 of 400 ° C. or less is provided to facilitate the decomposition by heating the volatile organic compound introduced therein. The volatile organic compound is adsorbed and concentrated by the rotor disk and is crushed through a low temperature oxidation catalyst. .

Particularly, the low-temperature oxidation catalyst is preferably a catalyst for removing volatile organic compounds (VOC) in which boehmite is impregnated with at least one metal selected from transition metals on the inner surface.

In addition, a branch fan 51 is provided at the front end of the heater unit 53 of the concentrated rotor module 50 so that the waste gas can be smoothly introduced into the heater unit 53.

On the other hand, a cooling unit 57 is formed at the rear end of the concentrated rotor module 60 to cool the exhaust gas from which 95% or more of the residual fine dust and volatile organic compounds have been removed and discharge it to the outside so as not to change the external temperature.

In addition, the rear end filter 57 is provided at the rear end of the cooling unit 57 of the concentrated rotor module 50 to further adsorb residual fine dust and volatile organic compounds, thereby further improving the function of the concentrated rotor module 50. It can be.

In addition, as a rotor disk driving means of the concentrated rotor module 50, a gear motor 55 is attached to one end of the rotary shaft, the gear motor 55 is formed with a plurality of teeth on the circumferential surface and the operation of the pneumatic cylinder Is preferably driven by.

The exhaust module 60 is operated by a fan to discharge the waste gas removed through the concentrated rotor module 50 to the outside.

On the other hand, the filter module 20 and the photocatalyst filter module 40 is fastened by a housing, and each filter is configured to be easily attached and detached as it slides into the housing portion in the housing to facilitate the replacement of each filter as well as unnecessary It is very economical to prevent filter replacement.

What has been described above is only one preferred embodiment of the hybrid system using the photocatalyst according to the present invention, and the present invention is not limited to the above-described embodiment, and as claimed in the following claims, the gist of the present invention Without departing from the technical spirit of the present invention to the extent that any person of ordinary skill in the art to which the present invention pertains various modifications can be made.

10: dust collecting module 20: filter module
30: UV module 40: photocatalyst filter module
50: concentrated rotor module 60: exhaust module

Claims (11)

delete A dust collection module into which fine dust and volatile organic compounds are introduced;
PM 2.5 A filter module consisting of a dust filter for removing fine dust and a concentration filter for controlling the flow amount of residual fine dust and volatile organic compounds;
UV module for pulverizing the volatile organic compounds and odor by ultraviolet irradiation;
A photocatalyst filter module for absorbing and removing residual volatile organic compounds and odors after the ultraviolet irradiation from the UV module;
A concentrated rotor module having a disk coated with a low temperature oxidation catalyst to adsorb and concentrate the residual volatile organic compounds and odors that have passed through the photocatalyst filter module; And
And an exhaust module for exhausting the removed gas to the outside, wherein the dust filter is formed in a bent shape with a filter surface, but a hybrid system using an ozone catalyst, characterized in that an ultrafine fiber layer is formed on a polyester fiber base. 3. The method of claim 2,
Hybrid system using a photocatalyst, characterized in that the pre-filter consisting of a long fiber nonwoven fabric is added to the front of the ultra-fine fiber layer of the dust filter 4. The method according to claim 2 or 3,
The concentration filter is configured in such a way that the damper can be opened and closed by the hydraulic pressure inside, so that the residual fine dust by allowing the damper to open only to the proper opening and closing position by the hydraulic pressure when the incoming waste gas exceeds the proper hydraulic pressure set by the user in advance. And hybrid system using a photocatalyst, characterized in that for controlling the flow of volatile organic compounds 5. The method of claim 4,
The concentration filter is a hybrid system using a photocatalyst, characterized in that further comprising a sensor unit for detecting the pressure of the incoming waste gas and a control unit for operating the hydraulic pressure 5. The method of claim 4,
The four side edges on the inner side of the UV module is a reflector is installed is a hybrid system using a photocatalyst, which induces to maximize the irradiation amount when the UV lamp is operated 5. The method of claim 4,
The UV module is coated with a catalyst for removing volatile organic compounds (VOC) in which at least one metal selected from transition metals is impregnated into boehmite on the inner surface to further increase the crushing efficiency of volatile organic compounds and odors due to UV irradiation. Hybrid system using photocatalyst 5. The method of claim 4,
The photocatalyst filter module is a 1: 1 to 1: 2 ratio of silane compound as a binder and TiO2 as a photocatalyst therein, and removes volatile organic compounds (VOC) in which at least one metal selected from transition metals is impregnated into boehmite on an inner surface thereof. Hybrid system using a photocatalyst, characterized in that the catalyst is coated The method of claim 8,
The photocatalyst filter module further includes a sensor for measuring the content of volatile organic compounds and a controller for controlling the flow of residual fine dust and volatile organic compounds. The method of claim 9,
The filter module and the photocatalyst filter module are fastened by a housing, and each filter slides to a receiving portion in the housing, and is configured to be easily detachable and hybrid system using a photocatalyst. 5. The method of claim 4,
The concentrated rotor module is provided with a heater portion of 400 ° C. or less to facilitate the decomposition by heating the volatile organic compound introduced therein, and the rotor disk has a volatile organic compound (VOC) in which at least one metal selected from transition metals is impregnated on the inner surface of the rotor disk. ) The catalyst for removal is coated, and a branch fan is provided at the front end of the heater unit to smoothly flow the waste gas into the heater unit, and a cooling unit is formed at the rear end of the concentrated rotor module, and a rear end filter is provided at the rear end of the cooling unit. Hybrid system using a photocatalyst, characterized in that

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