KR102433626B1 - Adsorption Type Hamful Gas Treatment System - Google Patents

Abstract

Disclosed is an adsorption-type hazardous gas treatment system. The adsorption-type harmful gas treatment system according to the present invention is a secondary reactor and a main reactor that are sequentially installed on a gas line and a gas line through which harmful gas is introduced and discharged to remove contaminants contained in the harmful gas through an adsorption reaction. The adsorbent supplied into the main reactor and used for the adsorption reaction is installed at the front end of the main reactor and recycled as an adsorbent in the auxiliary reactor that primarily removes pollutants contained in harmful gas, thereby generating in the existing adsorption facility. In addition to minimizing the problem of differential pressure, it is possible to use the performance of the adsorbent to the maximum, thereby remarkably improving the use efficiency of the adsorbent.

Description

Adsorption Type Hamful Gas Treatment System

The present invention relates to an adsorption-type harmful gas treatment system, and more particularly, it minimizes the differential pressure problem that occurs in the existing adsorption facility and enables the maximum performance of the adsorbent to be used to the maximum, thereby significantly improving the use efficiency of the adsorbent. It relates to an improved harmful gas treatment system.

Volatile Organic Compounds (VOCs) are used or emitted in various industrial facilities. Volatile organic compounds are a common name for hydrocarbon compounds that are easily volatilized into the atmosphere, and are substances that cause photochemical smog by generating photochemical oxides such as ozone or aldehydes by causing a photochemical reaction with nitrogen oxides in the atmosphere.

These volatile organic compounds are not only precursors of photochemical oxides with carcinogenic properties, but also cause environmental pollution such as global warming, odor at low concentrations, and directly harm the human body that causes cancer when in contact with skin or inhaled. It is a harmful substance.

Accordingly, industrial facilities that generate volatile organic compounds must be equipped with a treatment device to process (purify) and discharge them, and various legal regulations are also provided for discharge facilities.

There are various methods such as biological treatment method, direct combustion method, catalytic combustion method, and adsorption method for treating volatile organic compounds. This is the most preferred and currently the most widely used method.

The conventional harmful gas treatment apparatus using the adsorption method includes an adsorption tower into which harmful gas containing volatile organic compounds is introduced, and harmful gas is added to the activated carbon filled in the cartridge while the harmful gas passes through the activated carbon cartridge installed inside the adsorption tower. The toxic gas is treated in such a way that the volatile organic compounds contained in it are adsorbed and removed.

In such a conventional system for treating harmful gas, as the adsorption process is carried out a certain number of times or for a certain period of time, the volatile organic compound in the form of droplets is continuously adsorbed and the pores of the activated carbon are clogged, so that the activated carbon cannot properly purify the harmful gas. This is called the saturated state of activated carbon. When the activated carbon becomes saturated, it can no longer exhibit its adsorption performance and there is a risk of volatile organic compounds being discharged into the atmosphere. Therefore, it must be replaced with new activated carbon. It is common to recycle activated carbon after disposing of it.

However, the conventional adsorption-type harmful gas treatment apparatus has the following problems.

1) In the conventional harmful gas treatment device in which the activated carbon cartridge is mounted inside the adsorption tower in the form of a fixed bed, the internal space of the adsorption tower is partitioned based on the activated carbon cartridge. Even when the activated carbon is in a saturated state, it is difficult for harmful gases to pass through the activated carbon cartridge, so there is a problem in that a differential pressure is generated between the two partitioned spaces.

2) In the case of activated carbon whose life has expired due to repeated adsorption and regeneration, it must be replaced with a completely new one. At this time, the activated carbon inside the adsorption tower with reduced performance is discarded and replaced with new activated carbon. Doing so is an economic loss.

3) In the conventional noxious gas treatment apparatus, since the thickness of the activated carbon cartridge mounted inside the adsorption tower is fixed, the amount of the activated carbon filled inside the cartridge is also fixed, so that when the flow rate of noxious gas instantaneously increases, it cannot be properly dealt with. there is a problem.

4) Conventional hazardous gas treatment apparatus has the inconvenience of periodically disassembling and replacing the activated carbon cartridge from the inside of the adsorption tower as the activated carbon cartridge is fixedly mounted inside the adsorption tower.

5) In addition, the conventional harmful gas treatment apparatus has a problem that the adsorption process of the harmful gas must be temporarily stopped when the activated carbon is replaced or regenerated. That is, in the prior art, for the saturated adsorption tower, the adsorption process had to be stopped and the activated carbon cartridge mounted inside the saturated adsorption tower had to be separated (disassembled) and replaced or regenerated. In order to solve this problem, the prior art of having a plurality of adsorption towers and performing an adsorption process in some adsorption towers and a regeneration (desorption) process in some adsorption towers has been disclosed in Korean Patent Publication No. 10-1289861 and Korean Patent Registration Nos. Although presented in No. 10-2059835, these prior arts require additional installation of a device such as a rotary actuator to replace the cartridge position, or control line and valve so that both functions (adsorption/regeneration) can be performed in the adsorption tower. Another problem arises in that the system becomes complex and the cost for constructing such a system increases.

1. Domestic Patent Publication No. 10-1289861 (organic compound removal device with continuous adsorption and regeneration function) 2. Domestic Patent Publication No. 10-2059835 (Volatile Organic Compound Treatment System with Activated Carbon Regeneration Function)

The present invention has been derived to solve the problems of the prior art as described above, and it is possible to minimize the problem of differential pressure generated in the existing adsorption facility in which an adsorbent such as activated carbon is installed in a fixed bed form inside an adsorption tower. intended to provide

In addition, an object of the present invention is to provide a hazardous gas treatment system capable of maximizing the performance of an adsorbent by implementing a system to enable recycling of an adsorbent with some activity remaining in an adsorbent that was previously disposed of in bulk.

In addition, the present invention measures the concentration of noxious gas in real time at the front/rear end of the reaction zone where the adsorption reaction of the noxious gas is performed so that the supply/recycle/discharge of the adsorbent is made automatically, and at this time, the adsorbent is replaced continuously. By implementing the system so as to reduce the cost, it is intended to provide a hazardous gas treatment system that can perform a continuous process without stopping the operation of the facility.

The object of the present invention is not limited to the object mentioned above, and other objects not mentioned will be clearly understood by those of ordinary skill in the art from the following description.

According to one aspect of the present invention for achieving the above object, a gas line through which harmful gas is introduced and discharged; and an auxiliary reactor and a main reactor that are sequentially installed on the gas line to remove contaminants contained in the harmful gas through an adsorption reaction, and the adsorbent supplied into the main reactor and used for the adsorption reaction is the main An adsorption type noxious gas treatment system can be provided, which is installed at the front end of the reactor and recycled as an adsorbent of the auxiliary reactor that primarily removes contaminants contained in the noxious gas.

The noxious gas is introduced into one side of the auxiliary reactor and the main reactor and discharged to the other side, and the adsorbent supplied into the auxiliary reactor and the main reactor for the adsorption reaction with the noxious gas is the inner upper side of each reactor. It can be supplied to and moved to the lower side and discharged.

Toxic gas treatment system according to the present invention, a first storage container for storing the new adsorbent supplied to the main reactor; a recycle storage container for storing the recycled adsorbent discharged after being used in the main reactor; a second storage container for receiving and storing the recycled adsorbent supplied to the auxiliary reactor from the recycling storage container; And it may further include a collection container for collecting the final discharged waste adsorbent after being used in the auxiliary reactor.

In addition, the harmful gas treatment system according to the present invention, a first supply line for supplying the novel adsorbent from the first storage container to the main reactor; a first discharge line for discharging the recycled adsorbent from the main reactor to the recycle storage container; a recirculation line for transferring the recycled adsorbent from the recirculation storage container to the second storage container; a second supply line for supplying the recycled adsorbent from the second storage container to the auxiliary reactor; and a second discharge line for discharging the waste adsorbent from the auxiliary reactor to the collection vessel.

A valve for controlling supply or discharge of the adsorbent through each line may be installed on the first supply line, the first discharge line, the second supply line, and the second discharge line.

In addition, the harmful gas treatment system according to the present invention, an air supply line connected to the recirculation line for supplying air; a recirculation valve installed on the air supply line to control the air supply; an air suction line connected to the second storage container to suck air; and a blow motor installed on the air suction line to suck air supplied from the air supply line side to generate suction force of the recycled adsorbent through the recirculation line.

In addition, the harmful gas treatment system according to the present invention, the detection unit installed at the rear end of the main reactor to detect the concentration of the harmful gas; It may further include a control unit for controlling the system by analyzing the concentration data of the harmful gas measured by the detection unit, the valves are provided as ON-OFF valves driven by pneumatics to be automatically controlled in conjunction with the control unit can

The control unit controls the recirculation valve, the blower motor and the valves when the value detected by the sensing unit is greater than or equal to a preset value to supply the new adsorbent from the first storage container to the main reactor; discharge of the recycled adsorbent from the main reactor to the recycle storage vessel; transferring the recycled adsorbent from the recycle reservoir to the second reservoir; supply of said recycled adsorbent from said second reservoir to said auxiliary reactor; and controlling the discharge of the waste adsorbent from the auxiliary reactor to the collection vessel.

The first storage vessel and the second storage vessel are installed above the main reactor and the auxiliary reactor, respectively, and supply the new adsorbent from the first storage vessel to the main reactor and from the second storage vessel The supply of the recycled adsorbent to the auxiliary reactor is made by gravity dropping, and the recycle storage container and the collection container are installed below the main reactor and the auxiliary reactor, respectively, and the recycle storage container from the main reactor The discharge of the recycled adsorbent to the furnace and the discharge of the spent adsorbent from the auxiliary reactor to the collection vessel may be by gravity dropping.

On the other hand, according to another aspect of the present invention for achieving the above object, it is installed on the line for discharging the harmful gas and the adsorbent is filled therein, comprising a main reactor that removes pollutants in the harmful gas through an adsorption reaction In the hazardous gas treatment system, an auxiliary reactor is additionally installed in front of the main reactor, and the adsorbent discharged after use in the main reactor is recycled as the adsorbent of the auxiliary reactor without immediately discarding it. A hazardous gas treatment system of the method may be provided.

The adsorbent may be filled in a movable form without being fixed inside the main reactor and the auxiliary reactor.

The adsorbent may be configured to descend from the upper side to the lower side in the main reactor and the auxiliary reactor.

In the harmful gas treatment system according to the present invention, unlike the prior art in which the adsorbent is installed in the form of a fixed bed inside the adsorption tower, the adsorbent slowly descends from the top to the bottom inside the reactor, By being configured to remove the contained volatile organic compounds, there is an effect of minimizing the occurrence of gas differential pressure inside the reactor or in the front/rear end of the reactor.

In addition, according to the present invention, by recycling the adsorbent discharged after being used in the main reactor to the side of the auxiliary reactor, recycling of the adsorbent with some activity remaining is possible, so that the performance of the adsorbent can be used to the maximum, and thus the existing harmful Compared with the gas treatment system, there is an effect that the use efficiency of the adsorbent is remarkably improved.

In addition, the present invention measures the concentration of noxious gas in real time at the front/rear end of the reaction zone where the adsorption reaction of the noxious gas is performed so that the supply/recycle/discharge of the adsorbent is made automatically, and at this time, the adsorbent is replaced continuously. It has the effect of enabling continuous process execution without stopping the operation of the equipment by implementing the system.

1 is a view schematically showing a harmful gas treatment system according to the present invention.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

For reference, in this specification, the use of the term 'front end' refers to a direction relatively close to the source of harmful gas, that is, upstream, based on the flow direction of the harmful gas, and the use of the term 'rear end' refers to the flow direction of the harmful gas. It refers to the direction that is relatively far away from the source of harmful gas, that is, downstream.

Hereinafter, the present invention will be described in detail by describing preferred embodiments of the present invention with reference to the accompanying drawings. Like reference numerals in each figure indicate like elements.

1 is a view schematically showing a harmful gas treatment system according to the present invention.

Referring to FIG. 1 , the harmful gas treatment system according to the present invention includes: a gas line 10 through which harmful gas generated from a harmful gas generating source is introduced and discharged to the outside; a main reactor 21 installed on the gas line 10 to perform an adsorption reaction of volatile organic compounds contained in the harmful gas; and an auxiliary reactor 22 installed on the gas line 10 in front of the main reactor 21 to perform adsorption reaction of volatile organic compounds contained in the harmful gas primarily.

The gas line 10 is a line for discharging the harmful gas generated from the harmful gas generating source to the outside, and the harmful gas flowing into the gas line 10 in the present system is disposed in the auxiliary reactor 22 and the main reactor 21 to be described later. After the contaminants (eg, volatile organic compounds) contained in the harmful gas are sequentially removed by the method, they may be discharged as purified clean gas to the outside. Although not shown in the drawings, a blower fan or a pump for generating a flow force through which harmful gas is introduced and discharged may be installed on the gas line 10 .

The main reactor 21 and the auxiliary reactor 22 are devices for removing contaminants contained in harmful gases by filling an adsorbent therein, and may be provided in the form of a tank or a container having a space therein, and generally It may be a facility called an adsorption tower.

In the conventional noxious gas treatment apparatus, there is a problem in that the noxious gas to be treated is introduced into the lower or upper portion of the adsorption tower, resulting in a large differential pressure. In the present invention, in order to minimize this differential pressure, harmful gas is introduced into one side (side) of the reactors 21 and 22 and is configured to be discharged to the other side (side).

In addition, the present invention can configure the system to minimize the differential pressure generated while the harmful gas passes by adjusting the thickness of the harmful gas reaction zone. In this case, the thickness of the reaction zone means the thickness of the reaction zone in which the adsorbent (eg, activated carbon) is filled in the reactors 21 and 22, and is within the allowable range of differential pressure of the present system by adjusting the inner partition before operation of the facility. can be adjusted in

Pollutants can be removed from the harmful gas flowing into the reactors 21 and 22 through an adsorption reaction with the adsorbent. may be of the form. Here, the moving bed form means that the adsorbent supplied into the reactors 21 and 22 is directly moved (descent due to gravity) while removing contaminants contained in the harmful gas.

In the present invention, the adsorbent system may be configured to slowly descend from the upper side to the lower side inside the reactors 21 and 22, and ports (mouths) for supplying and discharging the adsorbent to the upper/lower portions of each of the reactors 21 and 22 /outlet) is provided, so that continuous supply and discharge of the adsorbent can be achieved.

The main reactor 21 is a component responsible for the most main treatment of harmful gases in the present system, and receives a new adsorbent (A) to perform adsorption reaction of harmful gases.

The hazardous gas treatment system according to the present invention temporarily stores the first storage container 31 for storing the new adsorbent (A) to be supplied to the main reactor 21 and the adsorbent discharged after being used in the main reactor 21 . It may further include a recirculation storage container (32) for storing.

The first storage container 31 is connected to the upper port of the main reactor 21 through the first supply line 41 , and first and second valves V1 and V2 installed on the first supply line 41 . ), the new adsorbent (A) may be supplied from the first storage container (31) to the main reactor (21) by control. At this time, so that the supply of the new adsorbent (A) from the first storage vessel 31 to the main reactor 21 can be made by dropping by gravity, the first storage vessel 31 is located on the upper side of the main reactor 21 . It may be installed, and more preferably, it may be installed vertically upward.

The recirculation storage container 32 is connected to the lower port of the main reactor 21 through the first discharge line 42 , and the third and fourth valves V3 and V4 installed on the first discharge line 42 . The adsorbent may be discharged from the main reactor 21 to the recirculation storage vessel 32 under the control of At this time, similarly, the recirculation storage container 32 may be installed at the lower side of the main reactor 21 so that the discharge of the adsorbent from the main reactor 21 to the recirculation storage container 32 can be made by dropping by gravity, More preferably, it may be installed vertically downward.

The performance of the new adsorbent (A) supplied to the main reactor 21 may be deteriorated as repeated adsorption reactions are performed. Therefore, when it is determined that the performance of the adsorbent inside the main reactor 21 is deteriorated, the adsorbent inside the main reactor 21 is discharged to the recirculation storage container 32 side, and a new adsorbent (A) is introduced into the main reactor 21. can be supplied with

The adsorbent discharged from the main reactor 21 and stored in the recycle storage container 32 is an adsorbent whose performance has deteriorated as described above, and will be referred to as a 'recycled adsorbent (B)' to distinguish it from the above-mentioned novel adsorbent (A). do.

The recycled adsorbent (B) stored in the recycle storage container 32 in the hazardous gas treatment system according to the present invention is not discarded, but recycled as an adsorbent of the auxiliary reactor 22 installed in front of the main reactor 21 .

To this end, the hazardous gas treatment system according to the present invention includes a second storage container 33 for receiving and storing the recycled adsorbent (B) to be supplied to the auxiliary reactor 22 from the recirculation storage container 32 , and the auxiliary reactor 22 . ) may further include a collection container 34 for collecting the final discharged adsorbent after being used.

The second storage container 33 is connected to the recirculation storage container 32 through a recirculation line 43 . An air supply line 50 is connected to the recirculation line 43 and an air suction line 60 is connected to the second storage container 33, respectively, and the blow motor 61 installed on the air suction line 60 is operated. By sucking the air supplied from the air supply line 50 side, the recycled adsorbent (B) can generate a suction force that is transferred to the second storage container 33 side through the recirculation line 43 . A recirculation valve 51 may be installed on the air supply line 50 to control (open/close) the supply of air through the corresponding line.

The second storage container 33 may be connected to the upper port of the auxiliary reactor 22 through the second supply line 44 , and the fifth and sixth valves V5 and V5 installed on the second supply line 44 , The supply of the recycled adsorbent (B) may be made from the second storage container (33) to the auxiliary reactor (22) under the control of V6). At this time, so that the supply of the recycled adsorbent (B) from the second storage container 33 to the auxiliary reactor 22 can be made by dropping by gravity, the second storage container 33 is located on the upper side of the auxiliary reactor 21 . It may be installed, and more preferably, it may be installed vertically upward.

The collection vessel 34 is connected to the lower port of the auxiliary reactor 22 through the second discharge line 45, and the seventh and eighth valves (V7, V8) installed on the second discharge line (45). Discharge of the adsorbent from the auxiliary reactor 22 to the collection vessel 34 can be achieved by control. At this time, similarly, the collection vessel 34 may be installed at the lower side of the auxiliary reactor 22 so that the discharge of the adsorbent from the auxiliary reactor 22 to the collection vessel 34 can be made by gravity drop, and more preferably It can be installed vertically downward.

The adsorbent discharged from the auxiliary reactor 22 is discharged after maximally using its performance until some activity remains. ) will be said. The waste adsorbent (C) collected in the collection vessel (34) can be collected and discarded or used in the present system as a new adsorbent (A) after being separately regenerated.

The above-described first to eighth valves V1 to V8 may be provided as ON-OFF valves pneumatically driven at the inlet/outlet of the reactors 21 and 22 for smooth supply and discharge of the adsorbent, and control to be described later. It can be automatically controlled in conjunction with the control logic of the unit.

As such, in the present invention, the auxiliary reactor 22 is additionally placed in front of the main reactor 21, and the system so that the recycled adsorbent (B) discharged after use in the main reactor 21 is recycled in the auxiliary reactor 22 By constructing it, it is possible to fully utilize the adsorbent in which some activity remains to the maximum performance, and thus, it is intended to achieve an economical effect.

On the other hand, the harmful gas treatment system according to the present invention is installed at the front end of the auxiliary reactor 22 and the first detection unit D1 for detecting the concentration of noxious gas, and installed at the rear end of the main reactor 21 to detect the harmful gas further comprising a second detection unit D2 for detecting the concentration of performance of the adsorbent), and based on this, it is possible to control the supply/recycle/discharge operation of the adsorbent.

The first sensing unit D1 and the second sensing unit D2 may be installed at the front end of the auxiliary reactor 22 and at the rear end of the main reactor 21 on the gas line 10, respectively, and flow on each line. It may be configured to include a sampling pipe for extracting a part of the harmful gas and a concentration analyzer for detecting the concentration (component) of the extracted harmful gas.

In the present invention, the first and second detection units (D1, D2) detect the concentration of harmful gas in each installed line in real time, and the harmful gas measured in real time by the first and second detection units (D1, D2) concentration data is converted into an output signal and sent to PLC (Power Line Communication), and the control unit analyzes the data transmitted to the PLC to calculate the content of pollutants contained in the harmful gas, and based on this, the adsorbent can automatically control the supply/recirculation/discharge of The control unit may be a computer or a mobile communication terminal.

Hereinafter, an adsorbent supply/recycle/discharge control method of a hazardous gas treatment system according to the present invention will be described in detail.

The control unit can measure the performance of the system by analyzing the concentration data of the harmful gas measured in real time by the first and second sensing units D1 and D2, and when it is determined that the harmful gas processing performance has deteriorated as a result of the measurement , it is possible to control the supply/recycle/discharge operation of the adsorbent to be performed.

Specifically, when the concentration of the harmful gas measured by the second detection unit D2 installed at the rear end of the main reactor 21 is greater than or equal to the set reference value, the recirculation valve 51 and the air intake installed on the air supply line 50 After the blow motor 61 installed on the line 60 is operated, the first valve V1 on the first supply line 41 and the third valve V3 on the first discharge line 42 close at the same time It opens for 2-3 seconds and then closes. Here, the operation of the recirculation valve 51 means switching to an open state.

When the first valve (V1) is opened, the new adsorbent (A) stored in the first storage container (31) is gravity-falling toward the second valve (V2). At this time, the amount of the new adsorbent A supplied into the main reactor 21 once may be determined according to the length of the first supply line 41 between the first valve V1 and the second valve V2.

Similarly, when the third valve V3 is opened, the used adsorbent in the main reactor 21 is gravity-falling toward the third valve V4. At this time, the amount of the adsorbent discharged from the main reactor 21 may be determined according to the length of the second supply line 44 between the third valve V4 and the fourth valve V4, The length of the line between the third valve V4 and the fourth valve V4 is such that the amount of the new adsorbent A supplied and the amount of the adsorbent discharged are equal to the first valve V1 and the second valve V2. It can be set equal to the length of the line between them.

When the first valve (V1) and the third valve (V3) are closed after operation, at the same time the second valve (V2) and the fourth valve (V4) are opened for about 2-3 seconds and then closed, to the main reactor (21) A feed of fresh adsorbent (A) and discharge of used adsorbent from the main reactor (21) takes place.

The adsorbent (B: recycled adsorbent) discharged through the fourth valve (V4) falls to the recirculation storage container 32 side, and the recycled adsorbent (B) temporarily stored in the recirculation storage container 32 is blown in advance. It is transferred into the recirculation line 43 by the suction force of the motor 61 and is filled in the second storage container 33 installed at the rear end.

When the recycling adsorbent (B) is filled in the second storage container (33), the fifth valve (V5) and the seventh valve (V7) installed in the lower part are opened at the same time for about 2-3 seconds and then closed.

When the fifth valve (V5) is opened, the recycled adsorbent (B) stored in the second storage container (33) is gravity-falling toward the sixth valve (V6), and when the seventh valve (V7) is opened, the auxiliary reactor (22) The used adsorbent is gravity-falling toward the eighth valve (V4).

At this time, the length of the line between the fifth valve (V5) and the sixth valve (V6) is adjusted so that the amount of the recycled adsorbent (B) supplied into the auxiliary reactor 22 and the amount of the adsorbent discharged are the same. It may be set equal to the length of the line between V7 and the eighth valve V8. Also, the line length between the fifth valve V5 and the sixth valve V6 may be set to be the same as the line length between the first valve V1 and the second valve V2 described above.

When the fifth valve (V5) and the seventh valve (V7) are closed after operation, at the same time the sixth valve (V6) and the eighth valve (V8) are opened and closed for about 2 to 3 seconds, to the auxiliary reactor (22) Feed of recycled adsorbent (B) and discharge of spent adsorbent from auxiliary reactor (22) takes place.

The adsorbent that has been finally used in the auxiliary reactor 22 is discharged to the collection vessel 34 through the second discharge line 45 and is then collected and discarded or regenerated as a new adsorbent (A) of the present system after being recycled. can be used

In the present system, from supply and discharge of the new adsorbent (A) to the main reactor (21), circulation of the recycled adsorbent (B), and supply and discharge of the recycled adsorbent (B) to and from the auxiliary reactor (22) are performed in one cycle. (cycle) can be defined.

When all of the supply/discharge operations of the new adsorbent (A) and the recycled adsorbent (B) are completed, the blow motor 61 is started and stopped and the recirculation valve 51 is closed.

In this system, the time point at which the adsorbent inside the main reactor 21 is destroyed or the time point at which some activity remains is set according to the type of material to be removed contained in the noxious gas, the performance of the adsorbent, the requirements for the purification of the noxious gas, etc. It can be set by different driving conditions.

Unlike the prior art in which the adsorbent is installed in the form of a fixed bed inside the adsorption tower, in the hazardous gas treatment system according to the present invention as described above, the adsorbent is introduced through the side (side) of the reactor while slowly descending from the top to the bottom inside the reactor. By being configured to remove the volatile organic compounds contained in the harmful gas, there is an effect of minimizing the occurrence of a gas differential pressure inside the reactor or in the front/rear end of the reactor.

In addition, according to the present invention, by recycling the adsorbent discharged after being used in the main reactor to the side of the auxiliary reactor, recycling of the adsorbent with some activity remaining is possible, so that the performance of the adsorbent can be used to the maximum, and thus the existing harmful Compared with the gas treatment system, there is an effect that the use efficiency of the adsorbent is remarkably improved.

In addition, the present invention measures the concentration of noxious gas in real time at the front/rear end of the reaction zone where the adsorption reaction of the noxious gas is performed so that the supply/recycle/discharge of the adsorbent is made automatically, and at this time, the adsorbent is replaced continuously. By implementing the system so that it is possible to carry out a continuous process without stopping the operation of the equipment, there is an effect.

In addition, according to the present invention, as the last used adsorbent is automatically discharged to the outside while passing through the main reactor and the auxiliary reactor, the inconvenience of disassembling the reactor and filling the adsorbent unlike the existing adsorption equipment is improved.

In addition, the present invention is a method for automatically controlling the concentration (component) of a harmful gas to be treated in real time, and the user only needs to perform monitoring through a control PC, etc., so it is a system emphasizing the user's convenience. have.

It is expected that the harmful gas treatment system according to the present invention can be effectively applied to industrial facilities that need to minimize differential pressure, such as power plants and incinerators.

The present invention is not limited to the described embodiments, and it is apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, it should be said that such modifications or variations belong to the claims of the present invention.

10: gas line
21: main reactor
22: auxiliary reactor
31: first storage container
32: recirculation storage container
33: second storage container
34: collection container
41: first supply line
42: first discharge line
43: recirculation line
44: second supply line
45: second discharge line
50: air supply line
51: recirculation valve
60: air intake line
61: blow motor
A: New adsorbent
B: Recycled adsorbent
C: lung adsorbent
D1: first detection unit
D2: second detection unit
V1~V8 : 1st~8th valve

Claims (12)

a gas line through which harmful gases are introduced and discharged; and
an auxiliary reactor and a main reactor sequentially installed on the gas line to remove contaminants contained in the harmful gas through an adsorption reaction;
a first storage container for storing the new adsorbent supplied to the main reactor;
a recycle storage container for storing the recycled adsorbent discharged after being used in the main reactor;
a second storage container for receiving and storing the recycled adsorbent supplied to the auxiliary reactor from the recycling storage container;
a collection container for collecting the waste adsorbent finally discharged after being used in the auxiliary reactor;
a first supply line for supplying the new adsorbent from the first storage vessel to the main reactor;
a first discharge line for discharging the recycled adsorbent from the main reactor to the recycle storage container;
a recirculation line for transferring the recycled adsorbent from the recirculation storage container to the second storage container;
a second supply line for supplying the recycled adsorbent from the second storage container to the auxiliary reactor; and
and a second discharge line for discharging the waste adsorbent from the auxiliary reactor to the collection vessel,
The adsorbent supplied into the main reactor and used for the adsorption reaction is installed at the front end of the main reactor and recycled as an adsorbent of the auxiliary reactor to primarily remove contaminants contained in the harmful gas,
A pair of valves for controlling the supply and discharge of the adsorbent are installed on the first supply line, the first discharge line, the second supply line and the second discharge line, respectively,
The distance between the pair of valves installed on the first supply line and the distance between the pair of valves installed on the first discharge line are set to be the same,
A distance between a pair of valves installed on the second supply line and a distance between a pair of valves installed on the second discharge line are set to be the same,
Adsorption-type hazardous gas treatment system.
The method according to claim 1,
The harmful gas is introduced into one side of the auxiliary reactor and the main reactor and discharged to the other side,
For the adsorption reaction with the harmful gas, the adsorbent supplied into the auxiliary reactor and the main reactor is supplied to the inner upper side of each reactor, characterized in that it is moved and discharged to the lower side,
Adsorption-type hazardous gas treatment system.
delete delete delete The method according to claim 1,
an air supply line connected to the recirculation line to supply air;
a recirculation valve installed on the air supply line to control the air supply;
an air suction line connected to the second storage container to suck air; and
Further comprising a blow motor installed on the air suction line to generate suction power of the recycled adsorbent through the recirculation line by sucking the air supplied from the air supply line side,
Adsorption-type hazardous gas treatment system.
7. The method of claim 6,
a sensing unit installed at the rear end of the main reactor to detect the concentration of harmful gas;
Further comprising a control unit for controlling the system by analyzing the concentration data of the harmful gas measured by the sensing unit,
The pair of valves are provided as ON-OFF valves driven by pneumatics, characterized in that they are automatically controlled in conjunction with the control unit,
Adsorption-type hazardous gas treatment system.
8. The method of claim 7,
The control unit controls the recirculation valve, the blower motor and the pair of valves when the detection value by the sensing unit is equal to or greater than a preset value to supply the new adsorbent from the first storage container to the main reactor ; discharge of the recycled adsorbent from the main reactor to the recycle storage vessel; transferring the recycled adsorbent from the recycle reservoir to the second reservoir; supply of said recycled adsorbent from said second reservoir to said auxiliary reactor; and controlling the discharge of the waste adsorbent from the auxiliary reactor to the collection vessel.
Adsorption-type hazardous gas treatment system.
9. The method of claim 8,
The first storage vessel and the second storage vessel are installed above the main reactor and the auxiliary reactor, respectively, and supply the new adsorbent from the first storage vessel to the main reactor and from the second storage vessel the feeding of the recycled adsorbent to the auxiliary reactor is by gravity dropping,
The recycle storage vessel and the collection vessel are installed below the main reactor and the auxiliary reactor, respectively, so as to discharge the recycled adsorbent from the main reactor to the recycle storage vessel and the waste from the auxiliary reactor to the collection vessel. Characterized in that the discharging of the adsorbent is made by gravity drop,
Adsorption-type hazardous gas treatment system.
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