KR20220137234A - Volatile Organic Compound Reduction System and Reduction Method - Google Patents

Abstract

The present invention relates to a volatile organic compound reduction system and a reduction method, which remove VOCs by repeatedly switching a flow in a passage through which a harmful fluid flows, and can increase VOC reduction efficiency without a separate cooling device or a separate cooling time because a heated adsorption unit and a catalyst unit are cooled by using a regeneration fluid from which VOCs have been removed.

Description

Volatile Organic Compound Reduction System and Reduction Method

The present invention relates to a system and method for reducing volatile organic compounds.

Volatile Organic Compounds (VOC) have high vapor pressure, low boiling point, and easily evaporate even at room temperature and diffuse into the air.

Volatile Organic Compounds (VOC) include organic solvents used in chemical processes, carbon chloride used as sprays or refrigerants, gasoline or compounds derived therefrom, and benzenes contained in cigarette or automobile soot, etc. Formaldehyde, which is a raw material for materials, building materials, paints, adhesives, etc.

In general, volatile organic compounds (VOCs) can be classified into supervolatile organic compounds with a boiling point of 0 to 100 ℃, volatile organic compounds with a boiling point of 100 to 260 ℃, and semi-volatile organic compounds with a boiling point of 260 to 400 ℃. As direct harmful effects of Volatile Organic Compounds (VOC), benzene is known to cause leukemia, central nervous system disorders and chromosomal abnormalities, while indirect secondary hazards include nitrogen oxides (NOx) and Ozone (O3), the cause of photochemical smog, is generated through photochemical reaction with other chemical substances, or photochemical smog caused by strong acid secondary pollutants such as peroxy-acetylnitrate (PAN), There are ozone layer depletion and global warming, etc., and it has a fatal adverse effect on the environment and human body.

Methods for removing such volatile organic compounds include a catalytic oxidation method, an adsorption treatment method, and a direct combustion method.

The direct combustion method is a method of decomposing exhaust gas through combustion. It has the advantage of a high removal rate of volatile organic compounds and is widely used. However, the direct combustion method consumes the operating cost for providing a heat source, and additional incineration is required when the exhaust gas contains halogen compounds or a large amount of inorganic metal compounds. In addition, there is a disadvantage that there is a possibility of generating nitrogen oxides and the like at high temperatures.

The adsorption treatment method is a method of collecting, collecting, and retaining contaminants on the surface of the adsorbent. The adsorption treatment method has the advantages of easy operation and low facility investment compared to other methods.

The catalytic oxidation method oxidizes and removes volatile organic compounds through catalysis, and has the advantage of high efficiency while requiring relatively low investment and operating costs compared to other methods.

In addition, the concentrated oxidation method, which applies concentration (adsorption) to the existing catalytic oxidation method, is suitable for the treatment of waste gas containing low concentrations of volatile organic compounds (VOC) or operation under conditions of varying flow rates and concentrations, and other systems Compared to that, energy consumption is low, investment and operating costs are low, and it can be operated at a low temperature, and has the advantage of relatively high efficiency.

However, it essentially includes a step of heating to desorb the adsorbed volatile organic compound and oxidize it. And, after heating, a cooling step must be performed in order to re-adsorb the volatile organic compounds.

Therefore, there is a problem in that the reduction efficiency of the volatile organic compound cannot but be reduced because the volatile organic compound cannot be adsorbed in the cooling step.

Registered Patent No. 10-1996411 (Announcement 2019.10.01.)

It is an object of the present invention to provide a highly efficient volatile organic compound reduction system and a reduction method.

According to the present invention, an adsorption unit for adsorbing and concentrating Volatile Organic Compounds (VOC) in a hazardous fluid, a catalyst unit for oxidizing and removing VOC desorbed from the adsorption unit by a catalyst, the adsorption unit and the catalyst a first reduction module and a second reduction module each including a heating unit for heating by supplying thermal energy to the unit; The first reduction module and the second reduction module are connected in series, and a forward flow passage through which the fluid flows from the first reduction module to the second reduction module and a reverse flow passage through which the fluid flows from the second reduction module to the first reduction module a flow path forming a; and a control unit controlling the inflow of the harmful fluid so that the noxious fluid alternately flows through the forward flow path and the reverse flow path. A volatile organic compound reduction system comprising a can be provided.

In addition, the forward flow path includes a first inflow flow path for introducing the harmful fluid into the first reduction module, and a second discharge flow path for discharging the regeneration fluid from which the VOC has been removed from the first reduction module through the second reduction module, and a connection passage connecting the first reduction module and the second reduction module in series, wherein the reverse flow passage is a second inflow passage for introducing a harmful fluid into the second reduction module, and the VOC is removed from the second reduction module. A system for reducing volatile organic compounds may be provided, including a first discharge passage for discharging through the removed regeneration passage and the first reduction module, and a connection passage for connecting the first reduction module and the second reduction module in series.

In addition, when the forward flow passage flows, the VOC adsorbed to the adsorption unit of the first reduction module is desorbed by heating of the heating unit of the first reduction module when the reverse flow passage flows, and is oxidized in the catalyst portion of the first reduction module. and the VOC adsorbed to the adsorption unit of the second reduction module during the flow in the reverse flow path is desorbed by heating of the heating part of the second reduction module during the flow in the forward flow path and is oxidized in the catalyst part of the second reduction module. A volatile organic compound reduction system can be provided.

In addition, the heated adsorption part and the catalyst part of the first reduction module are cooled by the regeneration fluid from which VOC is removed from the second reduction module flowing into the first reduction module when the flow in the reverse flow path flows, and the heated The adsorption unit and the catalyst unit of the second reduction module are cooled by the regeneration fluid from which VOCs are removed from the first reduction module flowing into the second reduction module when the forward flow passage flows. A system for reducing volatile organic compounds may be provided. .

In addition, the control unit closes the second inflow passage and the first discharge passage so that the harmful fluid flows in the forward flow path, and the first inflow passage and the second discharge passage so that the harmful fluid flows in the reverse flow passage. A volatile organic compound reduction system that closes the can be provided.

In addition, the control unit, the volatile organic compound reduction system for adjusting the switching interval of the forward flow path from the forward flow path to the reverse flow path or the reverse flow path of the harmful fluid may be provided.

In addition, an auxiliary discharge passage capable of discharging a portion of the regeneration fluid is connected to the connection passage. may be provided.

In addition, the control unit may be provided with a volatile organic compound reduction system for adjusting the ratio of the regeneration fluid flowing into the first discharge passage or the second discharge passage and the regeneration fluid discharged to the auxiliary discharge passage.

In addition, the first reduction module or the second reduction module may be provided with a volatile organic compound reduction system that integrally forms the adsorption unit, the catalyst unit, and the heating unit.

According to the present invention, in the volatile organic compound reduction method configured by connecting a first reduction module and a second reduction module each including an adsorption part, a catalyst part, and a heating part in series, (a) Volatile Organic Compounds : flowing into the first abatement module, a hazardous fluid including VOC), and adsorbing the VOC to an adsorption part of the first abatement module; (b) discharging the regeneration fluid from which VOC is removed in the first reduction module through the second reduction module; (c) introducing a hazardous fluid including VOC into the second abatement module, and adsorbing the VOC to an adsorption part of the second abatement module; (d) discharging the regeneration fluid from which VOC is removed in the second reduction module through the first reduction module; (e) introducing a hazardous fluid including VOC into the first abatement module, and adsorbing the VOC to an adsorption part of the first abatement module; and (f) discharging the regeneration fluid from which VOC is removed from the first reduction module through the second reduction module; A method for reducing volatile organic compounds comprising a can be provided.

In addition, the step (d) includes: (d-1) in the first reduction module, the heating unit heats the adsorption unit and the catalyst unit to desorb and oxidize VOCs from the adsorption unit; Methods for compound abatement may be provided.

In addition, in the step (d), (d-2) the adsorption part and the catalyst part of the first reduction module are cooled by the regeneration fluid from which the VOC is removed from the second reduction module discharged through the first reduction module. step; A method for reducing volatile organic compounds further comprising a can be provided.

In addition, the step (f), (f-1) in the second reduction module, the heating unit heating the adsorption unit and the catalyst unit to desorb and oxidize the VOC from the adsorption unit; Methods for compound abatement may be provided.

In addition, in the step (f), (f-2) the adsorption part and the catalyst part of the second reduction module are cooled by the regeneration fluid from which the VOC is removed from the first reduction module discharged through the second reduction module. step; A method for reducing volatile organic compounds further comprising a can be provided.

In addition, in step (d), a method for reducing volatile organic compounds in which a portion of the regeneration fluid from which VOC is removed in the second reduction module is directly discharged from the second reduction module without passing through the first reduction module can be provided. have.

In addition, in step (f), a method for reducing volatile organic compounds in which a portion of the regeneration fluid from which VOC is removed in the first reduction module is directly discharged from the first reduction module without going through the second reduction module can be provided. have.

In addition, a method for reducing VOCs in which VOCs contained in hazardous fluids are removed by repeating steps (a) to (f) as one process may be provided.

The volatile organic compound reduction system and method according to the present invention removes VOCs while repeatedly switching the flow of the flow path through which the harmful fluid flows, and uses the VOC-removed regeneration fluid to cool the heated adsorption unit and the catalyst unit. VOC reduction efficiency can be increased because there is no need for a separate device or a separate cooling time.

Therefore, high thermal efficiency can be obtained without a separate heat exchanger for thermal circulation.

In addition, by connecting two reduction modules in series to distribute the flow rate of the hazardous fluid and repeatedly change the flow direction of the hazardous fluid, the adsorption/desorption/oxidation/cooling process is continuously repeated to remove VOCs from the hazardous fluid. Therefore, high VOC removal efficiency is exhibited.

In addition, since it is composed of two reduction modules and a flow path connecting them, the volume of the system is greatly reduced, so that it can be installed directly at an outlet requiring removal of VOC, thereby reducing costs.

1 is a diagram schematically showing the configuration of a volatile organic compound reduction system according to an embodiment of the present invention.
2 to 6 are views schematically showing the flow of a fluid according to the configuration of the volatile organic compound reduction system according to an embodiment of the present invention.
7 is a diagram schematically illustrating a first reduction module or a second reduction module.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This example is provided to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shape of elements in the drawings may be exaggerated to emphasize a clearer description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. In addition, detailed descriptions of well-known functions and configurations determined to unnecessarily obscure the gist of the present invention will be omitted.

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

1 is a diagram schematically showing the configuration of a volatile organic compound reduction system according to an embodiment of the present invention. 2 to 6 are views schematically showing the flow of a fluid according to the configuration of the volatile organic compound reduction system according to an embodiment of the present invention. 7 is a diagram schematically illustrating a first reduction module or a second reduction module.

The system for reducing volatile organic compounds according to an embodiment of the present invention includes an adsorption unit 10 for adsorbing and concentrating volatile organic compounds (VOC) in a toxic fluid, and VOC desorbed from the adsorption unit 10 . A first reduction module 100, each including a catalyst unit 20 for oxidizing and removing the a second reduction module 200; The first reduction module 100 and the second reduction module 200 are connected in series, and the forward flow path 301 through which the fluid flows from the first reduction module 100 to the second reduction module 200 and the a flow path part 300 forming a reverse flow path 302 through which the fluid flows from the second reduction module 200 to the first reduction module 100; and a control unit controlling the inflow of the harmful fluid so that the noxious fluid alternately flows through the forward flow path 301 and the reverse flow path 302; includes

Referring to FIG. 1 , the first reduction module 100 includes an adsorption unit 10 for adsorbing and concentrating Volatile Organic Compounds (VOC) in a toxic fluid, and a catalyst for VOC desorbed from the adsorption unit 10 . and a heating unit 30 for heating by supplying thermal energy to the catalyst unit 20, which is oxidized and removed, and the adsorption unit 10 and the catalyst unit 20. Also, the second abatement module 200 includes an adsorption unit 10 , a catalyst unit 20 , and a heating unit 30 in the same manner as the first abatement module 100 .

The first reduction module 100 and the second reduction module 200 have a predetermined length in the longitudinal direction to form a space, and include an adsorption unit 10, a catalyst unit 20, and a heating unit 30 therein. can At this time, the adsorption unit 10 and the catalyst unit 20 may be formed as a single unit, and when the adsorption unit 10 and the catalyst unit 20 are formed separately, the catalyst unit 20 is the adsorption unit ( 10) is formed to communicate with.

The adsorption unit 10 adsorbs the volatile organic compounds in the harmful fluid introduced by the treatment of the adsorbent. Through this, the adsorption unit 10 adsorbs the volatile organic compounds in the introduced harmful fluid up to a certain concentration.

The catalyst unit 20 is formed by processing to enable oxidation of the volatile organic compound by the catalyst. Through this, the volatile organic compound desorbed from the adsorption unit 10 and flowing to the catalyst unit 20 is oxidized to carbon dioxide and water using a catalyst.

As described above, the heating unit 30 supplies thermal energy to the adsorption unit 10 and the catalyst unit 20 to heat it, so that the volatile organic compound is desorbed in the adsorption unit 10, and in the catalyst unit 20 Let the catalysis by the catalyst take place. The heating unit 30 heats when the volatile organic compound adsorbed to the adsorption unit 10 reaches a selected concentration (saturation state, etc.), so that the volatile organic compound is desorbed from the adsorption unit 10 . In addition, the heating unit 30 heats the catalyst unit 20 to oxidize and remove the volatile organic compounds desorbed by heating the catalyst. In this case, the supplied thermal energy may use pulsed thermal energy.

When the concentration of the volatile organic compound adsorbed to the adsorption unit 10 increases and becomes highly concentrated, the volatile organic compound adsorbed to the adsorption unit 10 is desorbed from the adsorption unit 10 and at the same time as carbon dioxide and furnace by the catalyst unit 20 may be oxidized. That is, when the volatile organic compound adsorbed at room temperature reaches a saturated state, it is desorbed by heating of the heating unit 30 , and the desorbed volatile organic compound is oxidized and removed in the catalyst unit 20 heated at the same time.

In this case, when the adsorption unit 10 and the catalyst unit 20 are modularly formed as one unit, the above processes of adsorption, desorption, and oxidation may be performed in a modular unit.

Hereinafter, it will be described with further reference to FIGS. 2 to 6 .

The first reduction module 100 and the second reduction module 200 are connected in series, the fluid flows into the first reduction module 100 or the second reduction module 200, and the first reduction module 100 or the second reduction module 200 2 A flow path part 300 through which the fluid flows from the reduction module 200 is formed.

The forward flow path 301 includes a first inflow flow path 310 for introducing a hazardous fluid into the first reduction module 100 , and a second inflow passage 310 for discharging the regeneration fluid from which VOC is removed from the second reduction module 200 . It includes a discharge flow path 340, a connection flow path 350 for connecting the first reduction module 100 and the second reduction module 200 in series, and the reverse flow passage 302 includes the second reduction module ( 200) a second inflow passage 320 for introducing a hazardous fluid, a first discharge passage 330 for discharging the regeneration fluid from which VOC is removed from the first reduction module 100, and the first reduction module 100. and a connection passage 350 for connecting the second reduction module 200 in series.

The flow path part 300 includes a forward flow path 301 through which fluid flows from the first reduction module 100 to the second reduction module 200 and a fluid flow from the second reduction module 200 to the first reduction module 100 . A reverse flow path 302 is formed.

At this time, the flow path unit 300 includes a first inlet flow path 310 for introducing a hazardous fluid into the first reduction module 100 , and a first discharge flow path for discharging the regeneration fluid from which VOC has been removed from the first reduction module 100 . (330) and the second inlet passage 320 for introducing the harmful fluid into the second reduction module 200, the second discharge passage 340 for discharging the regeneration fluid from the second reduction module 200, and the first reduction module It may include a connection flow path 350 for connecting the 100 and the second reduction module 200 in series.

The forward flow path 301 includes a first inflow flow path 310 , a connection flow path 350 , and a second discharge flow path 340 , and the reverse flow path 302 includes a second inflow flow path 320 and a connection flow path 350 . ), and a first discharge passage 330 .

That is, the forward flow path 301 has a first reduction module 100 in the first inflow passage 310 , a second reduction module 200 through the connection passage 350 in the first reduction module 100 , and the second The reduction module 200 forms a path of the second discharge passage 340 , and the reverse flow passage 302 is in the second inlet passage 320 , in the second reduction module 200 , and in the second reduction module 200 . A path of the first reduction module 100 and the first discharge passage 330 from the first reduction module 100 is formed through the connection passage 350 .

In the forward flow path 301 , the harmful fluid flows into the first reduction module 100 through the first inflow passage 310 , and the VOC is adsorbed and removed by the adsorption unit 10 of the first reduction module 100 . Then, the renewing fluid from which the VOC is removed is discharged to the second discharge passage 340 through the second reduction module 200 through the connection passage 350 .

In the reverse flow path 302 , the harmful fluid flows into the second reduction module 200 through the second inflow passage 320 , and the VOC is adsorbed and removed by the adsorption unit 10 of the second reduction module 200 . Then, the regeneration fluid from which the VOC is removed is discharged to the first discharge passage 330 through the first reduction module 100 through the connection passage 350 .

When the forward flow path 301 flows, the VOC adsorbed to the adsorption unit 10 of the first reduction module 100 is absorbed by the heating unit 30 of the first reduction module 100 when the reverse flow path 302 flows. ) is desorbed by heating and oxidized in the catalyst part 20 of the first reduction module 100, and adsorbed to the adsorption part 10 of the second reduction module 200 when the reverse flow passage 302 flows. One VOC is desorbed by heating of the heating unit 30 of the second reduction module 200 during the flow of the forward flow path 301 and is oxidized in the catalyst portion 20 of the second reduction module 200 .

When the concentration of VOC adsorbed to the adsorption unit 10 of the first reduction module 100 in the flow of the forward flow path 301 increases or reaches a certain concentration, the flow of the fluid moves from the forward flow path 301 to the reverse flow path ( 302) is converted. When the flow of the reverse flow path 302 is switched, the VOC adsorbed on the adsorption unit 10 of the first reduction module 100 is desorbed by heating the heating unit 30 of the first reduction module 100, and the first It is oxidized in the catalyst part of the reduction module 100 . At this time, the adsorption of VOC occurs in the adsorption unit 10 of the second reduction module 200 by the flow of the reverse flow path 302 .

And, when the concentration of the VOC adsorbed to the adsorption unit 10 of the second reduction module 200 in the flow of the reverse flow passage 302 is high or reaches a certain concentration, the flow of the fluid flows in the forward direction in the reverse flow passage 302 . It is switched to the flow path 301 . When the flow of the forward flow path 301 is switched, the VOC adsorbed to the adsorption unit 10 of the second reduction module 200 is desorbed by heating the heating unit 30 of the second reduction module 200, and the second It is oxidized in the catalyst part of the reduction module 200 . At this time, the adsorption of VOC occurs in the adsorption unit 10 of the second reduction module 200 by the flow of the forward flow path 301 .

When the first harmful fluid is introduced into the first reduction module 100 , only the VOC is adsorbed in the first reduction module 100 , and the regeneration fluid from which the VOC is removed is discharged through the second reduction module 200 . And, from the inflow of the first hazardous fluid into the first reduction module 100 and then into the second reduction module 200, when VOC is adsorbed in the second reduction module 200, the VOC is desorbed from the first reduction module 100. And oxidation occurs, and when the VOC is adsorbed in the first abatement module 100 , desorption and oxidation of the VOC occur in the second abatement module 200 .

That is, as the flows of the forward flow path 301 and the reverse flow path 302 are repeatedly switched, adsorption and desorption/oxidation are alternately performed in the first reduction module 100 and the second reduction module 200 .

Referring back to FIGS. 3 and 5 , the heated adsorption unit 10 and the catalyst unit 20 of the first reduction module 100 flow in the reverse flow path 302 when the first reduction module 100 is heated. The adsorption part 10 and the catalyst part 20 of the second reduction module 200 cooled and heated by the regeneration fluid from which the VOC is removed from the second reduction module 200 flowing into the forward flow path ( 301), it is cooled by the regeneration fluid from which VOC is removed from the first reduction module 100 flowing into the second reduction module 200.

In order to desorb the VOC adsorbed on the adsorption unit 10 , a process of heating the adsorption unit 10 with the heating unit 30 is required. The process of cooling the adsorption unit 10 of the first reduction module 100 or the adsorption unit 10 of the second reduction module 200 is essential for re-adsorption of VOCs. The process of cooling the adsorption unit 10 is also performed by reflecting the repeated switching of the flows of the forward flow path 301 and the reverse flow path 302 .

VOC adsorbed to the adsorption unit 10 of the first reduction module 100 in the flow of the forward flow path 301 is desorbed from the adsorption unit 10 by heating the heating unit 30 in the flow of the reverse flow path 302 . and oxidized in the catalyst unit 20 . When the oxidation of VOC in the catalyst part 20 of the first reduction module 100 is finished, the adsorption part 10 and the catalyst part 20 of the heated first reduction module 100 are discharged by the flow of the reverse flow path 302 . It is cooled by the regeneration fluid from which VOC is removed from the second reduction module 200 flowing into the first reduction module 100 .

That is, after the flow is switched from the forward flow path 301 to the reverse flow path 302 , the harmful fluid flows into the second reduction module 200 , and the adsorption unit 10 of the second reduction module 200 adsorbs VOCs. At the same time, desorption and oxidation of VOCs occur in the adsorption unit 10 of the first reduction module 100 . Even if the desorption and oxidation of VOC in the first reduction module 100 is completed, the regeneration fluid from which VOC is removed in the second reduction module 200 continues to flow into the first reduction module 100 to perform desorption and oxidation of VOC. To cool the heated adsorption unit 10 and the catalyst unit 20 .

Conversely, the VOC adsorbed to the adsorption unit 10 of the second reduction module 200 in the flow of the reverse flow path 302 is heated by the heating unit 30 in the flow of the forward flow path 301 to the adsorption unit 10 . It is desorbed and oxidized in the catalyst unit 20 . When the oxidation of VOC in the catalyst part 20 of the second reduction module 200 is finished, the adsorption part 10 and the catalyst part 20 of the heated second reduction module 200 are discharged by the flow of the reverse flow path 302 . It is cooled by the regeneration fluid from which VOC is removed from the first reduction module 100 flowing into the second reduction module 200 .

That is, after the flow is switched from the reverse flow path 302 to the forward flow path 301 , the harmful fluid flows into the first abatement module 100 , and the adsorption unit 10 of the first abatement module 100 adsorbs VOCs. At the same time, desorption and oxidation of VOCs occur in the adsorption unit 10 of the second reduction module 200 . Even if the desorption and oxidation of VOC in the second reduction module 200 is completed, the regeneration fluid from which the VOC is removed in the first reduction module 100 continues to flow into the second reduction module 200 to perform desorption and oxidation of VOC. To cool the heated adsorption unit 10 and the catalyst unit 20 .

As such, since the regenerated fluid from which VOC has been removed through repeated flow conversion of the forward flow path 301 and the reverse flow path 302 is used for cooling the heated adsorption unit 10 and the catalyst unit 20, separate cooling The removal efficiency of VOCs can be very high because no equipment or extra time is required.

The control unit closes the second inlet passage 320 and the first discharge passage 330 so that the harmful fluid flows through the forward flow passage 301 , and the harmful fluid flows through the reverse flow passage 302 . The first inflow passage 310 and the second discharge passage 340 are closed.

The control unit controls the flow path unit 300 to control flow switching between the forward flow path 301 and the reverse flow path 302 of the fluid.

The control unit controls the flow of the fluid in the forward flow path 301, the first inflow path 310, the first reduction module 100, the connection flow path 350, the second reduction module 200, the second reduction module 200, The second inflow passage 320 and the first discharge passage 330 are closed so that the second discharge passage 340 occurs in the order, and the flow of the fluid in the reverse flow passage 302 is the second inlet passage 320, the second The first reduction module 100 and the second discharge passage 340 are closed so that the reduction module 200, the connection passage 350, the first reduction module 100, and the first discharge passage 330 occur in this order.

To this end, a damper capable of opening and closing the flow path may be installed in the first inlet flow path 310 , the second inlet flow path 320 , the first discharge flow path 330 , and the second discharge flow path 340 . By adjusting the damper, the flow of the flow path can be switched.

In addition, the control unit adjusts the switching interval of the forward flow path 301 from the forward flow path 301 of the harmful fluid to the reverse flow path 302 or the reverse flow path 302 .

The time it takes for VOC to be adsorbed to the highest concentration in the adsorption unit 10 of the first reduction module 100 and the second reduction module 200 may vary depending on the type and concentration of harmful substances. The time for desorption in (10) and oxidation in the catalyst part (20) may also vary. In addition, the cooling time of the first reduction module 100 and the second reduction module 200 may vary.

The control unit may adjust the time interval for switching the flow of the fluid between the forward flow path 301 and the reverse flow path 302 according to circumstances. To this end, the first inflow passage 310 and the second inflow passage 320 may be provided with a sensor capable of measuring the type or concentration of the harmful fluid.

An auxiliary discharge passage 360 capable of discharging a portion of the regeneration fluid may be connected to the connection passage 350 .

By switching from the flow of the forward flow path 301 to the flow of the reverse flow path 302 , the VOC is adsorbed to the adsorption unit 10 of the second reduction module 200 , and the adsorption unit 10 in the first reduction module 100 . In the process of desorption and oxidation of the catalyst unit 20, the regeneration fluid from which VOC is removed from the second reduction module 200 does not all flow to the first reduction module 100 where desorption and oxidation take place, but a part of it is part of the auxiliary discharge passage. (360) may be discharged.

This is to increase the efficiency in the first reduction module 100 in which desorption and oxidation occur, for example, 90% of the regeneration fluid from which VOC is removed in the second reduction module 200 is an auxiliary discharge passage 360. and the remaining 10% may be adjusted to flow to the first reduction module 100 .

Referring back to FIGS. 3 and 5 , for this purpose, the control unit includes the regeneration fluid flowing into the first discharge passage 330 or the second discharge passage 340 and the regeneration fluid discharged through the auxiliary discharge passage 360 . ratio can be adjusted. The ratio may be adjusted to the same ratio or a different ratio as described above, and all of the regeneration fluid may be discharged to the auxiliary discharge passage 360 .

In the flow of the forward flow path 301 and the reverse flow path 302 , the regenerated fluid flowing into the first discharge flow path 330 or the second discharge flow path 340 and the regenerated fluid flowing into the auxiliary discharge flow path 360 are discharged to the ratio can be adjusted.

In the flow of the control unit forward flow path 301, the ratio of the regeneration fluid flowing into the second reduction module 200 and flowing into the second discharge passage 340 and the regeneration fluid discharged into the auxiliary discharge passage 360 is 0-50: It can be adjusted from 100 to 50.

In addition, even in the opposite flow of the reverse flow path 302 , the ratio of the regeneration fluid flowing into the first reduction module 100 and flowing into the first discharge passage 330 and the regeneration fluid discharged into the auxiliary discharge passage 360 is 0 It can be adjusted from ~50:100 to 50.

By controlling the rate at which the regeneration fluid is discharged, the efficiency may be increased in the first reduction module 100 or the second reduction module 200 in which desorption and oxidation occur.

Referring to FIG. 7 , the first reduction module 100 or the second reduction module 200 may integrally form the adsorption unit 10 , the catalyst unit 20 , and the heating unit 30 .

When describing the first reduction module 100 as a reference, the adsorption unit 10, the catalyst unit 20, and the heating unit 30 are separated as shown in FIG. As shown in FIG. 7B , the adsorption unit 10 , the catalyst unit 20 , and the heating unit 30 may be formed in the form of a single unit that is not separated from each other in the form of a complex module. In addition, although not shown, the adsorption unit 10 and the catalyst unit 20 may be configured as a single unit as a complex module, and the heating unit 30 may be installed next to each other.

Whatever the shape, the adsorption unit 10, the catalyst unit 20, and the heating unit 30 are integrally formed inside the first abatement module 100 or the second abatement module 200, so that Adsorption, desorption, and oxidation actions occur at the same time, effectively reducing VOC.

Hereinafter, a method for reducing volatile organic compounds according to an embodiment of the present invention will be described with reference to FIGS. 2 to 6 .

A method for reducing volatile organic compounds according to an embodiment of the present invention includes a first abatement module 100 and a second abatement module 200 each including an adsorption unit 10 , a catalyst unit 20 , and a heating unit 30 , respectively. ), in the volatile organic compound reduction method configured by connecting in series, (a) a hazardous fluid including volatile organic compounds (VOC) flows into the first reduction module 100, and the first reduction module (100) adsorbing the VOC to the adsorption unit (10); (b) discharging the regeneration fluid from which VOC is removed from the first reduction module 100 through the second reduction module 200; (c) introducing a hazardous fluid including VOC into the second abatement module 200, and adsorbing the VOC to the adsorption unit 10 of the second abatement module 200; (d) discharging the regeneration fluid from which VOC is removed from the second reduction module 200 through the first reduction module 100; (e) introducing a hazardous fluid including VOC into the first abatement module 100, and adsorbing the VOC to the adsorption unit 10 of the first abatement module 100; and (f) discharging the regeneration fluid from which VOC is removed from the first reduction module 100 through the second reduction module 200; includes

Referring to FIG. 2 , in step (a), the harmful fluid including VOCs flows into the first abatement module 100, and the VOCs are adsorbed and removed by the adsorption unit 10 of the first abatement module 100. And in step (b), the regeneration fluid from which the VOC is removed in the first reduction module 100 is discharged through the second reduction module 200 .

In more detail, the harmful fluid flows into the first inflow channel 310 and enters the first abatement module 100, and the adsorption unit 10 of the first abatement module 100 removes VOCs contained in the hazardous fluid. adsorbed and removed. The regeneration fluid from which the VOC is removed in the first reduction module 100 enters the second reduction module 200 through the connection passage 350 , and is discharged through the second discharge passage 340 .

Referring to FIG. 3 , in step (c), the harmful fluid including VOCs flows into the second abatement module 200, and the VOCs are adsorbed and removed by the adsorption unit 10 of the second abatement module 200. And in step (d), the regeneration fluid from which the VOC is removed in the second reduction module 200 is discharged through the first reduction module 100 .

In more detail, the harmful fluid flows into the second inflow passage 320 and enters the second abatement module 200, and the adsorption unit 10 of the second reduction module 200 removes VOCs contained in the harmful fluid. adsorbed and removed. The regeneration fluid from which the VOC is removed in the second reduction module 200 enters the first reduction module 100 through the connection passage 350 , and is discharged through the first discharge passage 330 .

In the step (d), (d-1) in the first reduction module 100, the heating unit 30 heats the adsorption unit 10 and the catalyst unit 20 to thereby heat the adsorption unit 10. It further includes; desorbing and oxidizing VOCs.

The harmful fluid that has entered the second abatement module 200 is removed by adsorbing the VOC to the adsorption part 10 of the second abatement module 200 and becomes a regeneration fluid through the connection flow path 350 to the first abatement module 100. and is discharged to the first discharge passage 330 . At this time, the heating unit 30 of the first abatement module 100 heats the adsorption unit 10 and the catalyst unit 20 , and the VOC adsorbed in the first abatement module 100 is desorbed to the catalyst unit 20 . ) is oxidized by

And, referring to FIG. 4 , in step (d), (d-2) by the regeneration fluid from which VOC is removed from the second reduction module 200 discharged through the first reduction module 100. cooling the adsorption unit 10 and the catalyst unit 20 of the first reduction module 100; further includes

The adsorption unit 10 and the catalyst unit 20 of the first reduction module 100 heated in step (d-1) are cooled in step (d-2).

The regeneration fluid from which the VOC has been removed from the second reduction module 200 flows into the first reduction module 100 . At this time, the regeneration fluid cools the adsorption unit 10 and the catalyst unit 20 .

As the harmful fluid continues to flow into the second reduction module 200 , the VOC is removed from the adsorption unit 10 of the second reduction module 200 , becomes a regeneration fluid, flows into the first reduction module 100 and is heated The adsorption unit 10 and the catalyst unit 20 are cooled.

Referring to FIG. 5 , in step (e), the harmful fluid including VOCs flows into the first abatement module 100, and the VOCs are adsorbed and removed by the adsorption unit 10 of the first abatement module 100. And in step (f), the regeneration fluid from which the VOC is removed in the first reduction module 100 is discharged through the second reduction module 200 .

In more detail, the harmful fluid flows into the first inflow channel 310 and enters the first abatement module 100, and the adsorption unit 10 of the first abatement module 100 removes VOCs contained in the hazardous fluid. adsorbed and removed. The regeneration fluid from which the VOC is removed in the first reduction module 100 enters the second reduction module 200 through the connection passage 350 , and is discharged through the second discharge passage 340 .

In the step (f), (f-1) in the second reduction module 200, the heating unit 30 heats the adsorption unit 10 and the catalyst unit 20 so that the adsorption unit 10 is It further includes; desorbing and oxidizing VOCs.

The harmful fluid that has entered the first reduction module 100 is removed by adsorbing VOC to the adsorption part 10 of the first reduction module 100 and becomes a regeneration fluid through the connection flow path 350 to the second reduction module 200. and is discharged to the second discharge passage 340 . At this time, the heating unit 30 of the second abatement module 200 heats the adsorption unit 10 and the catalyst unit 20 , and the VOC adsorbed to the second abatement module 200 is desorbed and the catalyst unit 20 is desorbed. ) is oxidized by

And, referring to FIG. 6 , in step (f), (f-2) by the regeneration fluid from which VOC is removed from the first reduction module 100 discharged through the second reduction module 200. cooling the adsorption unit 10 and the catalyst unit 20 of the second reduction module 200; further includes

The adsorption unit 10 and the catalyst unit 20 of the second reduction module 200 heated in step (f-1) are cooled in step (f-2).

The regeneration fluid from which the VOC has been removed from the first reduction module 100 flows into the second reduction module 200 . At this time, the regeneration fluid cools the adsorption unit 10 and the catalyst unit 20 .

As the harmful fluid continues to flow into the first reduction module 100 , the VOC is removed from the adsorption unit 10 of the first reduction module 100 , becomes a regeneration fluid, flows into the second reduction module 200 , and is heated The adsorption unit 10 and the catalyst unit 20 are cooled.

In step (d), a part of the regeneration fluid from which VOC is removed in the second reduction module 200 can be directly discharged from the second reduction module 200 without going through the first reduction module 100, , in step (f), a portion of the regeneration fluid from which VOC is removed in the first reduction module 100 can be directly discharged from the first reduction module 100 without going through the second reduction module 200 have.

This is to increase the efficiency of the first reduction module 100 or the second reduction module 200 in which desorption and oxidation occur, for example, 90% of the regeneration fluid from which VOC is removed in the second reduction module 200. % is discharged to the auxiliary discharge passage 360 , and the remaining 10% can be made to flow to the first reduction module 100 .

Then, the steps (a) to (f) are repeated as one process to remove VOCs contained in the harmful fluid.

As such, the volatile organic compound reduction system and reduction method according to an embodiment of the present invention removes VOCs while repeatedly switching the flow of the flow path through which the harmful fluid flows, and the adsorption unit heated using the VOC-removed regeneration fluid ( 10) and the catalyst unit 20 are cooled, so there is no need for a separate device for cooling or a separate cooling time, thereby increasing the VOC reduction efficiency.

Therefore, high thermal efficiency can be obtained without a separate heat exchanger for thermal circulation.

In addition, by connecting two reduction modules in series to distribute the flow rate of the hazardous fluid and repeatedly change the flow direction of the hazardous fluid, the adsorption/desorption/oxidation/cooling process is continuously repeated to remove VOCs from the hazardous fluid. Therefore, high VOC removal efficiency is exhibited.

In addition, since it is composed of two reduction modules and a flow path connecting them, the volume of the system is greatly reduced, so that it can be installed directly at an outlet requiring removal of VOC, thereby reducing costs.

The embodiments of the present invention described above are merely exemplary, and those of ordinary skill in the art to which the present invention pertains will appreciate that various modifications and equivalent other embodiments are possible therefrom. Therefore, it will be well understood that the present invention is not limited to the forms recited in the above detailed description. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. It is also to be understood that the present invention includes all modifications, equivalents and substitutions falling within the spirit and scope of the invention as defined by the appended claims.

10: adsorption unit
20: catalyst unit
30: heating part
100: first reduction module
200: second reduction module
300: Euro
301: forward flow
302: reverse flow
310: first inflow path
320: second inflow passage
330: first discharge flow path
340: second discharge flow path
350: connection flow
360: auxiliary discharge path

Claims (17)

By supplying thermal energy to an adsorption unit that adsorbs and concentrates Volatile Organic Compounds (VOC) in a hazardous fluid, a catalyst unit that oxidizes and removes VOC desorbed from the adsorption unit by a catalyst, and the adsorption unit and the catalyst unit a first reduction module and a second reduction module each including a heating unit for heating;
The first reduction module and the second reduction module are connected in series, and a forward flow passage through which the fluid flows from the first reduction module to the second reduction module and a reverse flow passage through which the fluid flows from the second reduction module to the first reduction module a flow path forming a; and
a control unit controlling the inflow of the harmful fluid so that the noxious fluid alternately flows through the forward flow path and the reverse flow path; cast
A volatile organic compound reduction system comprising.
The method of claim 1,
The forward flow path includes a first inflow flow path for introducing a hazardous fluid into the first reduction module, a second discharge flow path for discharging the regeneration fluid from which VOC has been removed from the first reduction module through the second reduction module, Including a connection flow path for connecting the first reduction module and the second reduction module in series,
The reverse flow path may include a second inflow path for introducing a hazardous fluid into the second reduction module, a first discharge flow path for discharging the regenerated oil from which the VOC is removed from the second reduction module, and the first reduction module, the first A volatile organic compound reduction system comprising a connection passage connecting the reduction module and the second reduction module in series.
3. The method of claim 2,
When the forward flow passage flows, the VOC adsorbed to the adsorption part of the first reduction module is desorbed by heating of the heating part of the first reduction module when the reverse flow passage flows, and is oxidized in the catalyst part of the first reduction module;
The VOC adsorbed to the adsorption part of the second reduction module when the reverse flow passage flows is desorbed by heating of the heating part of the second reduction module when the forward flow passage flows, and is oxidized in the catalyst part of the second reduction module,
VOC reduction system.
4. The method of claim 3,
The heated adsorption part and the catalyst part of the first reduction module are cooled by the regeneration fluid from which VOC is removed from the second reduction module flowing into the first reduction module when the reverse flow passage flows,
The heated adsorption part and the catalyst part of the second reduction module are cooled by the regeneration fluid from which VOC is removed from the first reduction module flowing into the second reduction module when the forward flow passage flows,
VOC reduction system.
3. The method of claim 2,
The control unit is
A volatile organic compound that closes the second inflow passage and the first discharge passage so that the harmful fluid flows in the forward flow passage, and closes the first inlet and the second discharge passage so that the harmful fluid flows in the reverse flow passage abatement system.
The method of claim 1,
The control unit is
A volatile organic compound reduction system for controlling a switching interval of the forward flow path from the forward flow path to the reverse flow path or from the reverse flow path to the forward flow path of the harmful fluid.
3. The method of claim 2,
A volatile organic compound reduction system is connected to the connection flow path with an auxiliary discharge flow path capable of discharging a portion of the regeneration fluid.
8. The method of claim 7,
The control unit is
A volatile organic compound reduction system for controlling a ratio of the regeneration fluid flowing into the first discharge passage or the second discharge passage and the regeneration fluid discharged through the auxiliary discharge passage.
The method of claim 1,
The first reduction module or the second reduction module is a volatile organic compound reduction system that integrally forms the adsorption unit, the catalyst unit, and the heating unit.
In the volatile organic compound reduction method configured by connecting in series a first abatement module and a second abatement module each including an adsorption unit, a catalyst unit, and a heating unit,
(a) introducing a hazardous fluid including volatile organic compounds (VOC) into the first abatement module, and adsorbing the VOC to an adsorption part of the first abatement module;
(b) discharging the regeneration fluid from which VOC is removed in the first reduction module through the second reduction module;
(c) introducing a hazardous fluid including VOC into the second abatement module, and adsorbing the VOC to an adsorption part of the second abatement module;
(d) discharging the regeneration fluid from which VOC is removed in the second reduction module through the first reduction module;
(e) introducing a hazardous fluid including VOC into the first abatement module, and adsorbing the VOC to an adsorption part of the first abatement module; and
(f) discharging the regeneration fluid from which VOC is removed in the first reduction module through the second reduction module; cast
A method for reducing volatile organic compounds, including.
11. The method of claim 10,
Step (d) is,
(d-1) in the first reduction module, the heating unit heats the adsorption unit and the catalyst unit to desorb and oxidize VOCs in the adsorption unit;
A method for reducing volatile organic compounds further comprising.
12. The method of claim 11,
Step (d) is,
(d-2) cooling the adsorption unit and the catalyst unit of the first reduction module by the regeneration fluid from which VOC is removed from the second reduction module discharged through the first reduction module; cast
A method for reducing volatile organic compounds further comprising.
11. The method of claim 10,
The step (f) is,
(f-1) in the second reduction module, the heating unit heats the adsorption unit and the catalyst unit to desorb and oxidize VOCs in the adsorption unit;
A method for reducing volatile organic compounds further comprising.
14. The method of claim 13,
The step (f) is,
(f-2) cooling the adsorption unit and the catalyst unit of the second reduction module by the regeneration fluid from which VOC is removed from the first reduction module discharged through the second reduction module; cast
A method for reducing volatile organic compounds further comprising.
11. The method of claim 10,
In step (d),
A method for reducing volatile organic compounds in which a portion of the regenerated fluid from which VOC is removed in the second reduction module is directly discharged from the second reduction module without passing through the first reduction module.
11. The method of claim 10,
In step (f),
A method for reducing volatile organic compounds in which a portion of the regenerated fluid from which VOC is removed in the first reduction module is directly discharged from the first reduction module without going through the second reduction module.
17. The method according to any one of claims 10 to 16,
A volatile organic compound reduction method for removing VOCs contained in hazardous fluids by repeating steps (a) to (f) as one process.

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