KR20240062185A - Harmful gas removal system contained in high-pressure gas - Google Patents

Abstract

The present invention relates to a system for removing harmful gases contained in high-pressure gas.
Specifically, the harmful gas removal system includes a main gas line through which harmful gases contained in high-pressure gas are introduced and discharged, a main adsorption reaction unit disposed on the main gas line and removing the harmful gases through an adsorption reaction, and It is disposed on the main gas line and includes an auxiliary adsorption reaction unit installed in front of the main adsorption reaction unit to primarily remove the harmful gas, the main adsorption reaction unit includes a new adsorbent, and the auxiliary adsorption reaction unit is recycled. It includes an adsorbent, and the recycled adsorbent recycles new adsorbent used in the adsorption reaction in the main adsorption reaction unit. The main adsorption reaction unit and the auxiliary adsorption reaction unit are used to supply the recycled adsorbent to the auxiliary adsorption reaction unit. It is characterized by including a recirculation line connecting it.

Description

Harmful gas removal system contained in high-pressure gas}

The present invention relates to a system for removing harmful gases contained in high-pressure gas. More specifically, it relates to a harmful gas removal system that improves the use efficiency of the adsorbent by minimizing the differential pressure problem that occurs in existing adsorption facilities and enabling the maximum use of the adsorbent performance even under high-pressure gas conditions.

Volatile organic compounds (VOCs) are used or emitted in various industrial facilities. Volatile organic compounds are a general term for hydrocarbon compounds (benzene, formaldehyde, toluene, xylene, ethylene, styrene, acetaldehyde, etc.) that easily volatilize into the air and generate bad odors, and are used in the petrochemical refining process, painting, manufacturing and storage of paints. , It occurs from excessive sewage treatment, etc., and it occurs from automobile exhaust gas, building materials, etc.

These volatile organic compounds are substances that have a negative impact on the environment by causing bad odors even at low concentrations. They are carcinogens that cause disorders in the nervous system through skin contact or respiratory inhalation, and are very harmful to the human body.

Accordingly, industrial facilities that generate volatile organic compounds must be equipped with treatment devices to purify and discharge them, and various legal regulations are in place for discharge facilities.

Methods for treating volatile organic compounds include combustion (thermal oxidation), biological treatment, adsorption, and catalytic combustion methods. At this time, in the case of biological treatment, combustion (thermal oxidation), and catalytic combustion methods, the adsorption method is most preferred for economic reasons because it costs a lot of money to treat volatile organic compounds, and is currently the most widely used method.

The harmful gas treatment device using the conventional adsorption method includes an adsorption tower into which harmful gases containing volatile organic compounds are introduced. As the harmful gases pass through the activated carbon cartridge installed inside the adsorption tower, the harmful gases are released into the activated carbon filled inside the cartridge. Harmful gases are treated in a way that the volatile organic compounds contained in them are adsorbed and removed.

However, in the case of a harmful gas treatment device using the conventional adsorption method 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, and a differential pressure is generated as the harmful gas passes through the activated carbon cartridge. A problem arises. In addition, when the activated carbon is saturated, it becomes difficult for harmful gases to pass through the activated carbon cartridge, causing a problem of differential pressure between the two partitioned spaces.

Additionally, activated carbon that has reached the end of its life due to repeated adsorption and regeneration must be replaced with a completely new one. At this time, the activated carbon inside the adsorption tower whose performance has decreased is discarded and replaced with new activated carbon. Some of the discarded activated carbon may still have the ability (activity) to treat harmful gases, but discarding it all together causes economic loss. I do it.

In addition, as the thickness of the activated carbon cartridge installed inside the adsorption tower is fixed, the amount of activated carbon filled inside the cartridge is also fixed. Therefore, there is a problem that it is difficult to respond appropriately when the flow rate of harmful gases momentarily increases, and the amount of activated carbon inside the adsorption tower is fixed. As it is fixedly installed, workers must periodically disassemble and replace the activated carbon cartridge from inside the adsorption tower, and there is a problem in that the adsorption process of harmful gases must be temporarily stopped during replacement or regeneration work.

Domestic Patent Registration No. 10-2059835 “Volatile organic compound treatment system with activated carbon regeneration function” Domestic Patent Registration Publication 10-1748782 “Volatile harmful gas treatment device capable of monitoring” Domestic Patent Registration Publication 10-2433626 “Adsorption type harmful gas treatment system”

The purpose of the present invention is to provide a system for removing harmful gases contained in high-pressure gas.

In addition, the purpose is to provide a system for removing harmful gases contained in high-pressure gas that minimizes the differential pressure problem that occurs in existing adsorption facilities in which adsorbents such as activated carbon are installed in the form of a fixed bed inside the adsorption tower.

Additionally, the purpose is to provide a system for removing harmful gases contained in high-pressure gas that can be used at a pressure exceeding normal pressure (1 atmosphere).

In addition, the purpose of the present invention is to provide a system for removing harmful gases contained in high-pressure gas in which the use efficiency of the adsorbent is improved by recycling the adsorbent with some activity remaining in the previously discarded adsorbent and recycling the adsorbent.

In addition, the purpose is to provide a system for removing harmful gases contained in high-pressure gas that measures the concentration of harmful gases in real time and can perform continuous processes without stopping the operation of facilities that automatically supply, circulate, and discharge adsorbents.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below.

According to one aspect of the present invention for achieving the above object, in the harmful gas removal system, the main gas line through which the harmful gas contained in the high-pressure gas is introduced and discharged is disposed on the main gas line to perform an adsorption reaction. It includes a main adsorption reaction unit that removes the harmful gas through the main adsorption reaction unit and an auxiliary adsorption reaction unit that is disposed on the main gas line and is installed in front of the main adsorption reaction unit to primarily remove the harmful gas, and the main adsorption reaction unit It includes a new adsorbent, and the auxiliary adsorption reaction unit includes a recycled adsorbent, and the recycled adsorbent recycles the new adsorbent used in the adsorption reaction in the main adsorption reaction unit, and supplies the recycled adsorbent to the auxiliary adsorption reaction unit. To this end, a system for removing harmful gases contained in high-pressure gas is provided, which includes a recirculation line connecting the main adsorption reaction unit and the auxiliary adsorption reaction unit.

Preferably, the main adsorption reaction unit includes a first storage vessel, a first pressurized storage vessel, a main adsorption reactor, and a pressurized recirculation storage vessel, and the first storage vessel, the first pressurized storage vessel, and the main adsorption reaction unit include the first storage vessel, the first pressurized storage vessel, and the main adsorption reaction unit. 1 connected to a supply line, and the main adsorption reactor and the pressurized recirculation storage container may be connected to a first discharge line.

Preferably, the first pressurized storage vessel is equipped with a first static pressure transmitter, the main adsorption reactor is installed with a second static pressure transmitter, and the pressurized recirculating storage vessel is installed with a third static pressure transmitter, and the first pressurized A first differential pressure transmitter may be installed between the storage vessel and the main adsorption reactor, and a second differential pressure transmitter may be installed between the main adsorption reactor and the pressurized recirculation storage vessel.

Preferably, the auxiliary adsorption reaction unit includes a second storage container, a second pressurized storage container, an auxiliary adsorption reactor, and a pressure collection container, and the second storage container, the second pressurized storage container, and the auxiliary adsorption reactor are a second storage container. It may be connected to a supply line, and the auxiliary adsorption reactor and the pressure collection vessel may be connected to a second discharge line.

Preferably, the second pressurized storage vessel is installed with a fourth static pressure transmitter, the auxiliary adsorption reactor is installed with a fifth static pressure transmitter, the pressurized collection vessel is installed with a sixth static pressure transmitter, and the second pressurized storage A third differential pressure transmitter may be installed between the vessel and the auxiliary adsorption reactor, and a fifth differential pressure transmitter may be installed between the auxiliary adsorption reactor and the pressure collection vessel.

Preferably, the harmful gas removal system further includes a high-pressure nitrogen tank for storing nitrogen, and the nitrogen may be supplied to the main adsorption reaction unit and the auxiliary adsorption reaction unit.

Preferably, the harmful gas removal system further includes a detection unit that detects the concentration of harmful gas on the main gas line and a control unit that controls the system by analyzing the concentration data of the harmful gas measured by the detection unit. It could be.

Preferably, the detection unit includes a first detection unit installed in front of the auxiliary adsorption reaction unit, a second detection unit installed between the auxiliary adsorption reaction unit and the main adsorption reaction unit, and a second detection unit installed in the rear end of the main adsorption reaction unit. 3 It may include a detection unit.

Preferably, the harmful gas system is installed with a plurality of valves that control the supply and discharge of the adsorbent, and the valves are provided with pneumatically driven ON-OFF valves and are automatically controlled in conjunction with the control unit. You can.

According to another aspect of the present invention for achieving the above-described object, a step of injecting high-pressure gas containing harmful gas into the main gas line, an adsorption step of adsorbing and removing harmful gas contained in the high-pressure gas, and removing the harmful gas. It includes a discharge step of discharging the high-pressure gas removed by gas adsorption to the outside. The adsorption step includes an adsorbent circulation step of analyzing the harmful gas concentration in real time, filling a new adsorbent, and removing the spent adsorbent. Provides a method of removing harmful gases using a harmful gas removal system.

Preferably, the adsorption step includes a first adsorption step of adsorbing and removing harmful gases contained in the high-pressure gas through an auxiliary adsorption reaction section and a main adsorption reaction section of removing harmful gases from the high-pressure gas that has performed the first adsorption step. It may include a second adsorption step of adsorption and removal.

Preferably, the adsorbent circulation step includes a first concentration measurement step in which the third detection unit measures the harmful gas concentration in real time, and when the harmful gas concentration measurement value is greater than the reference value, the new adsorbent stored in the first storage container is transferred to the first storage container. A first filling step of supplying to a pressurized storage container, a first pressurizing step of supplying high-pressure nitrogen to the first pressurized storage container and the pressurized recirculating storage container to equal the internal pressure of the main adsorption reactor, and the main adsorption reactor. It may include a second charging step of supplying the stored recycled adsorbent to a pressurized recirculation storage container and supplying the new adsorbent stored in the first pressurized storage container to the main adsorption reactor.

Preferably, the adsorbent circulation step further includes a recycled adsorbent recirculation step, wherein the recycle step includes a third filling step of supplying the recycled adsorbent stored in the pressurized recirculation storage container to a second storage container, and a second detection unit A second concentration measurement step of measuring the harmful gas concentration in real time, a fourth filling step of supplying the recycled adsorbent stored in the second storage container to the second pressurized storage container when the harmful gas concentration measurement value is higher than the standard value, and second pressurized storage. A second pressurization step in which high-pressure nitrogen is supplied to the vessel and the pressure collection vessel to pressurize it to the same internal pressure of the auxiliary adsorption reactor, and the waste adsorbent stored in the auxiliary adsorption reactor is supplied to the pressure collection vessel, and the second pressurization storage It may include a fifth filling step of supplying the recycled adsorbent stored in the container to the auxiliary adsorption reactor.

The present invention has the effect of providing a system for removing harmful gases contained in high-pressure gas.

In addition, it is effective in providing a system for removing harmful gases contained in high-pressure gas that minimizes the pressure differential problem that occurs in existing adsorption facilities in which adsorbents such as activated carbon are installed in the form of a fixed bed inside the adsorption tower.

In addition, it is effective in providing a system for removing harmful gases contained in high-pressure gas that can be used at a pressure exceeding normal pressure (1 atmosphere).

In addition, there is an effect of providing a system for removing harmful gases contained in high-pressure gas with improved use efficiency of the adsorbent by recycling the adsorbent with some activity remaining in the previously discarded adsorbent and recycling the adsorbent.

In addition, it is effective in providing a system for removing harmful gases contained in high-pressure gas that measures the concentration of harmful gases in real time and allows continuous processing without stopping the operation of the equipment, which automatically supplies, circulates, and discharges the adsorbent.

Further scope of applicability of the present invention will become apparent from the detailed description that follows. However, since various changes and modifications within the spirit and scope of the present invention may be clearly understood by those skilled in the art, the detailed description and specific embodiments, such as preferred embodiments of the present invention, should be understood as being given by way of example only.

Figure 1 is a diagram schematically showing a system for removing harmful gases contained in high-pressure gas according to the present invention.

Details regarding the purpose and technical configuration of the present invention and its operations and effects will be more clearly understood by the detailed description based on the drawings attached to the specification of the present invention.

The terms used herein are only used to describe specific embodiments and are not intended to limit the invention. For example, in this specification, “including” a certain component does not mean excluding other components, but rather includes other components, unless specifically stated to the contrary.

Hereinafter, the present invention will be described in detail by explaining preferred embodiments of the present invention with reference to the accompanying drawings. The embodiments described herein are provided so that those skilled in the art can easily understand the technical idea of the present invention, and should not be construed as limiting the present invention, and the embodiments of the present invention are provided to those skilled in the art. It is natural that it can have a variety of applications.

Figure 1 is a diagram schematically showing a system for removing harmful gases contained in high-pressure gas according to the present invention.

Referring to Figure 1, the harmful gas removal system according to the present invention may be configured to include a main gas line 10, a main adsorption reaction unit, and an auxiliary adsorption reaction unit.

The main gas line 10 is a line that discharges harmful gases contained in high-pressure gas to the outside, and the harmful gases contained in the high-pressure gas can be purified and discharged to the outside.

In detail, the main adsorption reaction unit and the auxiliary adsorption reaction unit are disposed on the main gas line 10, and the contaminants contained in the high-pressure harmful gas sequentially pass through the auxiliary adsorption reaction unit and the main adsorption reaction unit. is removed, harmful gases are removed, and the purified clean gas can be discharged to the outside. At this time, a blowing fan (not shown) or a pump (not shown) may be installed on the main gas line 10 to generate a flow force through which high-pressure gas is introduced and discharged.

Conventional harmful gas treatment devices had a problem in that harmful gases to be treated flowed into the lower or upper part of the adsorption tower, resulting in a large differential pressure.

Accordingly, in the present invention, in order to minimize the differential pressure, the harmful gas contained in the high-pressure gas can be configured to flow into one side (side) of the main adsorption reaction unit and the auxiliary adsorption reaction unit and be discharged from the other side (side).

The main adsorption reaction unit and the auxiliary adsorption reaction unit are disposed on the main gas line to remove harmful gases contained in the high-pressure gas through an adsorption reaction, and may be formed in the form of a tank or container with a space inside, It may be a facility commonly referred to as an adsorption tower.

The main adsorption reaction unit may include a first storage container 31, a first pressurized storage container 32, a main adsorption reactor 21, and a pressurized recirculation storage container 33.

The main adsorption reactor (21) is responsible for the main treatment of harmful gases contained in the high-pressure gas, and performs an adsorption reaction through the new adsorbent (A) in the main adsorption reactor (21) to remove the harmful gases in the high-pressure gas. It can be refined. Accordingly, the main adsorption reactor 21 is preferably placed on the main gas line 10 in order to receive the harmful gas and perform an adsorption reaction.

The first storage container 31 stores the new adsorbent (A) to be supplied to the main adsorption reactor 21, and is preferably disposed above the main adsorption reactor 21.

At this time, the new adsorbent (A) of the first storage container (31) is supplied to the main adsorption reactor (21) using gravity, and within the first storage container (31) and the main adsorption reactor (21) The pressure must be the same.

Accordingly, it is preferable that the first pressurized storage container 32 is disposed between the first storage container 31 and the main adsorption reactor 21.

The pressurized recycling storage container 33 temporarily stores the adsorbent (recycled adsorbent (B)) discharged after performing the adsorption reaction in the main adsorption reactor 21, and is located below the main adsorption reactor 21. It is desirable to be

At this time, the adsorbent according to the present invention is configured in the form of a moving bed rather than the existing fixed bed form, and the adsorbent supplied into the main adsorption reactor 21 moves directly (falls due to gravity), removing the contamination contained in the harmful gas. Materials can be removed. Accordingly, it is preferable that the system is configured so that the adsorbent gradually descends from the upper side of the main adsorption reaction section to the lower side.

In detail, the first storage container 31 is disposed at the uppermost part of the main adsorption reaction unit, and the lower port (outlet) of the first storage container 31 is connected to the first storage container 31 through the first supply line 41. 1 It is preferable that the first valve (V1) is connected to the upper port (inlet) of the pressurized storage container 32 and disposed between the first storage container 31 and the first pressurized storage container 32.

The lower port (outlet) of the first pressurized storage vessel 32 is connected to the upper port (inlet) of the main adsorption reactor 21 through the first supply line 41, and the first pressurized storage vessel 32 ) and the main adsorption reactor 21. It is preferable that the second valve (V2) is disposed.

In addition, the lower port (outlet) of the main adsorption reactor 21 is connected to the upper port (inlet) of the pressurized recirculation storage container 33 through the first discharge line 42, and the main adsorption reactor 21 ) and the pressurized recirculation storage container 33. It is preferable that the third valve (V3) is disposed.

That is, the first storage container 31 and the first pressurized storage container 32 are preferably disposed vertically above the main adsorption reactor 21, and the pressurized recirculation storage container 33 is located in the main adsorption reactor 21. It is preferable to place it vertically below (21).

Furthermore, the main adsorption reaction unit must control the pressure in the first pressurized storage vessel 32, the main adsorption reactor 21, and the pressurized recirculation storage vessel 33 in order to move the new adsorbent (A) from the upper side to the lower side.

Accordingly, the first pressure storage container 32 may be equipped with a first static pressure transmitter (P1), and a ninth valve (V9) may be installed to discharge the gas in the first pressure storage container 33.

In addition, the main adsorption reactor 21 is equipped with a second static pressure transmitter (P2), and a tenth valve (V10) may be installed to discharge the gas in the main adsorption reactor 21, and the pressurized recirculation storage container (33) may be installed with a third static pressure transmitter (P3).

In addition, a first differential pressure transmitter (PDT1) is installed between the first pressurized storage vessel 32 and the main adsorption reactor 21, and a second differential pressure transmitter (PDT1) is installed between the main adsorption reactor 21 and the pressurized recirculation storage vessel 33. A differential pressure transmitter (PDT2) can be installed.

Meanwhile, the adsorbent (recycled adsorbent (B)) temporarily stored in the pressurized recirculation storage container 33 is not discarded but is supplied to the auxiliary adsorption reaction unit located in front of the main adsorption reaction unit and recycled as an adsorbent.

To this end, the auxiliary adsorption reaction unit may be configured to include a second storage container 34, a second pressurized storage container 35, an auxiliary adsorption reactor 22, and a pressure collection container 36.

The auxiliary adsorption reactor (22) primarily purifies the harmful gases contained in the high-pressure gas before processing the harmful gases in the main adsorption reactor (21), and the recycled adsorbent (B) in the auxiliary adsorption reactor (22) Harmful gases in high-pressure gas can be purified by performing an adsorption reaction.

Accordingly, the auxiliary adsorption reactor 22 is preferably placed on the main gas line 10 in order to receive the harmful gas and perform an adsorption reaction.

The second storage container 34 stores the recycled adsorbent (B) to be supplied to the auxiliary adsorption reactor 22, and is preferably disposed above the auxiliary adsorption reactor 22.

At this time, the recycled adsorbent (B) stored in the second storage container 34 is supplied from the pressurized recirculation storage container 33 of the main adsorption reaction unit, and the second storage container 34 and the pressurized recirculation storage container (33) can be connected through the recirculation line 43, and an eighth valve (V8) can be installed on the recirculation line 43 to control supply.

In addition, by supplying the recycled adsorbent (B) from the second storage container 34 to the auxiliary adsorption reactor 22 using gravity, the second storage container 34 and the auxiliary adsorption reactor 22 The pressure must be the same.

Accordingly, it is preferable that the second pressurized storage container 35 is disposed between the second storage container 34 and the auxiliary adsorption reactor 22.

The pressure collection container 36 stores the final adsorbent (waste adsorbent (C)) discharged after performing the adsorption reaction in the auxiliary adsorption reactor 22, and is disposed below the auxiliary adsorption reactor 22. desirable.

In detail, the final adsorbent stored in the pressure collection container 36 is discharged after using its performance to the maximum, even if some activity remains in the auxiliary adsorption reactor 22, including the new adsorbent (A) described above and To distinguish it from the recycled adsorbent (B), it will be referred to as waste adsorbent (C). The waste adsorbent (C) stored in the pressurized collection container 36 can be collected and discarded or separately regenerated and then used in the system as a new adsorbent (A).

At this time, the recycled adsorbent (B) is configured in the form of a moving bed, and the adsorbent supplied into the auxiliary adsorption reactor (22) moves directly (descends due to gravity) to remove pollutants contained in the harmful gas. there is. Accordingly, it is preferable that the system is configured so that the adsorbent gradually descends from the upper side of the auxiliary adsorption reaction unit to the lower side.

In detail, the second storage container 34 is disposed at the uppermost part of the auxiliary adsorption reaction unit, and the lower port (outlet) of the second storage container 34 is connected to the second storage container 34 through the second supply line 44. 2 It is connected to the upper port (inlet) of the pressurized storage container 35, and it is preferable that the fourth valve V4 is disposed between the second storage container 34 and the second pressurized storage container 35.

The lower port (outlet) of the second pressurized storage vessel 35 is connected to the upper port (inlet) of the auxiliary adsorption reactor 22 through the second supply line 44, and the second pressurized storage vessel 35 ) and the auxiliary adsorption reactor 22. It is preferred that the fifth valve (V5) is disposed.

In addition, the lower port (outlet) of the auxiliary adsorption reactor 22 is connected to the upper port (inlet) of the pressure collection vessel 36 through the second discharge line 45, and the auxiliary adsorption reactor 22 and the sixth valve (V6) is preferably disposed between the pressure collection container (35).

That is, the second storage container 34 and the second pressurized storage container 35 are preferably disposed vertically above the auxiliary adsorption reactor 22, and the pressure collection container 36 is located in the auxiliary adsorption reactor ( It is preferable to place it vertically below 22).

Furthermore, the auxiliary adsorption reaction unit must control the pressure in the second pressurized storage container 35, the auxiliary adsorption reactor 22, and the pressure collection container 36 in order to move the recycled adsorbent (B) from the upper side to the lower side.

Accordingly, a fourth static pressure transmitter (P4) may be installed in the second pressurized storage container (35), and a twelfth valve (V12) may be installed to discharge the gas in the second pressurized storage container (35).

In addition, the auxiliary adsorption reactor 22 may be equipped with a fifth static pressure transmitter (P5), and a thirteenth valve 13 may be installed to discharge gas within the auxiliary adsorption reactor 22.

In addition, the pressure collection container 36 may be installed with a sixth static pressure transmitter (P6), and a fourteenth valve 14 may be installed to discharge the gas in the pressure collection container 26. A seventh valve (V7) may be further included to discharge the waste adsorbent (C) stored in the collection container (36) to the outside.

In addition, a third differential pressure transmitter (PDT3) is installed between the second pressure storage container 35 and the auxiliary adsorption reactor 22, and a fourth differential pressure transmitter is installed between the auxiliary adsorption reactor 22 and the pressure collection container 36. A transmitter (PDT4) can be installed.

The harmful gas removal system of the present invention may further include a high-pressure nitrogen tank 61 that supplies high-pressure nitrogen and stores nitrogen in order to control the pressure within the system.

In detail, in order to supply high-pressure nitrogen in the system, the first pressurized storage container 32 is connected to the high-pressure nitrogen tank 61 and the first nitrogen supply line 51, and the first nitrogen supply line ( 51) A seventeenth valve (V17) that controls nitrogen supply may be installed.

In addition, the pressurized recirculation storage container 33 is connected to a long-term high-pressure nitrogen tank 61 and a second nitrogen supply line 52, and a 15th valve that controls nitrogen supply on the second nitrogen supply line 52. (V15) can be installed.

In addition, the second pressurized storage container 35 is connected to the high-pressure nitrogen tank 61 and the third nitrogen supply line 53, and a 16th nitrogen supply line for controlling nitrogen supply on the third nitrogen supply line 53. Valve (V16) can be installed.

In addition, the pressurized collection container 36 is connected to the high-pressure nitrogen tank 61 and the fourth nitrogen supply line 54, and an 18th valve ( V18) can be installed.

On the other hand, the harmful gas processing system according to the present invention includes a detection unit that detects the concentration of harmful gas on the main gas line 10 and a control unit that controls the system by analyzing the concentration data of the harmful gas measured by the detection unit. It may be configured to further include.

In detail, the detection unit includes a first detection unit (D1) installed in front of the auxiliary adsorption reaction unit, a second detection unit (D2) installed between the auxiliary adsorption reaction unit and the main adsorption reaction unit, and the main adsorption reaction unit. It includes a third detection unit (D3) installed at the rear end of the unit, and the second detection unit (D2) and third detection unit (D3) detect the concentration of harmful gas in each installed line in real time and The measured concentration data of harmful gases is converted into an output signal and sent to PLC (Power Line Communication), and the control unit analyzes the data transmitted to the PLC and calculates the content of pollutants contained in the harmful gases. And based on this, the supply, recirculation, and discharge of adsorbent can be automatically controlled. At this time, the control unit may be a computer or a mobile communication terminal.

At this time, the first detection unit (D1) measures in real time the concentration of the initial harmful gas first introduced into the auxiliary adsorption reaction unit, and measures the concentration of the initial harmful gas and the concentration of the harmful gas after purification to detect the harmful gas. Purification efficiency can be confirmed.

In addition, the above-mentioned first to eighteenth valves (V1 to V18) are pneumatically driven ON-OFF valves located at the inlet and outlet of the main adsorption reaction section and the auxiliary adsorption reaction section for smooth supply and discharge of the adsorbent. It may be provided, and the valve may be automatically controlled in conjunction with the control logic of the control unit.

Hereinafter, the method of removing harmful gases in the system for removing harmful gases contained in high-pressure gas according to the present invention will be described in detail.

The harmful gas removal method includes the steps of injecting high-pressure gas containing harmful gas into the main gas line 10, an adsorption step of adsorbing and removing the harmful gas contained in the high-pressure gas, and removing the high-pressure gas removed by adsorption of the harmful gas. It includes an exhaust step of discharging gas to the outside. At this time, the adsorption step includes a first adsorption step of adsorbing and removing harmful gases contained in the high-pressure gas through an auxiliary adsorption reaction section, and a first adsorption step of adsorbing harmful gases from the high-pressure gas that performed the first adsorption step through the main adsorption reaction section. It may include a second adsorption step of removal.

In addition, the adsorption step may include an adsorbent circulation step in which the harmful gas concentration is analyzed in real time, a new adsorbent (A) is filled, and the spent adsorbent (C) is removed.

The adsorbent circulation step is a first concentration measurement step in which the third detection unit (D3) measures the harmful gas concentration in real time, and when the harmful gas concentration measurement value is greater than the reference value, a new adsorbent stored in the first storage container 31 ( The first filling step of supplying A) to the first pressurized storage vessel 32, supplying high-pressure nitrogen to the first pressurized storage vessel 32 and the pressurized recirculation storage vessel to reduce the internal pressure of the main adsorption reactor 21 and In the first pressurization step where the same pressure is applied, the recycled adsorbent (B) stored in the main adsorption reactor is supplied to the pressurized recirculation storage container, and the new adsorbent (A) stored in the first pressurized storage container 32 is supplied to the main adsorption reactor ( 21) may include a second filling step.

In detail, the harmful gas concentration is analyzed in real time through the harmful gas sample pipe installed in the third detection unit (D3). At this time, the harmful gas concentration data measured in real time is transmitted to the PLC, and when the concentration of the harmful gas is higher than the standard value set in the control PC program, the first valve (V1) is opened and the new stored in the first storage container (31) is released. A new adsorbent (A) is filled into the first pressurized storage container (32) through the first supply line (41).

At this time, the storage amount of the new adsorbent (A) filled in the first pressurized storage container (32) is determined according to the volume of the first pressurized storage container (32) because it is proportional to the time that the first valve (V1) is opened. .

When the filling of the new adsorbent (A) into the first pressurized storage vessel (32) is completed, the first valve (V1) is blocked to fill the main adsorption reactor (21) with the new adsorbent (A), and then the ninth valve is opened. Block the valve (V9) and the eighth valve (V8).

The main adsorption reactor 21 is injected with high-pressure gas containing harmful gases, and the internal pressure of the first pressurized storage vessel 32 and the pressurized recirculation storage vessel 33 is adjusted to supply new adsorbent (A). It should be the same as the internal pressure of the main adsorption reactor (21).

Accordingly, high-pressure nitrogen is supplied to the first pressurized storage container 32 and the pressurized recirculation storage container 33 to pressurize them.

In detail, the 15th valve (V15) and the 17th valve installed in the first nitrogen supply line 51 and the second nitrogen supply line 52 are used to supply high-pressure nitrogen stored in the high-pressure nitrogen tank 61. By opening (V17), high-pressure nitrogen is supplied to the first pressurized storage container 32 and the pressurized recirculation storage container 33, thereby pressurizing them.

At this time, the first static pressure transmitter (P1) and the third static pressure transmitter (P3) installed in the first pressurized storage container 32 and the pressurized recirculating storage container 33, and the first differential pressure transmitter installed in the main adsorption reactor 21 ( PDT1) and the second differential pressure transmitter (PDT2) are checked and pressurization is performed. When the first differential pressure transmitter (PDT1) and the second differential pressure transmitter (PDT2) indicate 0, the fifteenth valve (V15) and the second differential pressure transmitter (PDT2) are pressed. 17 Complete pressurization by blocking the valve (V17) to stop nitrogen supply.

Afterwards, the second valve (V2) and the third valve (V3) are opened to allow the new adsorbent (A) stored in the first pressurized storage container (32) to be supplied to the upper part of the main adsorption reactor (21) by gravity and to the main adsorption reactor ( The recycled adsorbent (B) used in 21) is filled into the pressurized recirculation storage container (33) through the first discharge line (42).

When the filling of the new adsorbent and the discharge of the recycled adsorbent (B) are completed, the second valve (V2) and the third valve (V3) are blocked, and the ninth valve (V9) connected to the first pressurized storage container (32) is opened. This releases the internal pressure (nitrogen) to the outside. At this time, the pressure is reduced until the indicated value of the first static pressure transmitter (P1) becomes 0, and when the pressure reduction of the first pressurized storage container (32) is completed, the first valve (V1) is opened to introduce the new adsorbent (A). The first pressurized storage container (31) is filled again.

Meanwhile, in order to supply the recycled adsorbent (B) to the second storage container (34), the adsorbent circulation step further includes a recycled adsorbent recirculation step.

The recycled adsorbent recirculation step is a third filling step of supplying the recycled adsorbent (B) stored in the pressurized recirculation storage container (33) to the second storage container (34), and the second detection unit (D2) measures the harmful gas concentration in real time. A second concentration measurement step of measuring, a fourth filling step of supplying the recycled adsorbent (B) stored in the second storage container (33) to the second pressurized storage container (35) when the harmful gas concentration measurement value is greater than the standard value, A second pressurization step in which high-pressure nitrogen is supplied to the second pressurized storage container 35 and the pressure collection container 36 to equalize the internal pressure of the auxiliary adsorption reactor 22, and to the auxiliary adsorption reactor 22. It includes a fifth charging step of supplying the stored waste adsorbent (C) to the pressurized collection container (36) and supplying the recycled adsorbent (B) stored in the second pressurized storage container (35) to the auxiliary adsorption reactor (22). .

In detail, by opening the eighth valve (V8) connected to the pressurized recirculation storage container (33) filled with the recycled adsorbent (B), the recycled adsorbent (B) is released into the recirculation line (43) by nitrogen gas pressurized therein. The second storage container 34 is filled through airflow transport.

At this time, the fourth valve (V4) installed in the second storage container (34) is blocked, the eleventh valve (V11) is open, and the airflow transported recycled adsorbent (B) is stored in the second storage container (34). ), the nitrogen gas transferred to the second storage container 34 is discharged to the outside through the 11th valve (V11).

A harmful gas sample pipe installed in the second detection unit (D2) at the rear of the auxiliary adsorption reactor (22) to supply the recycled adsorbent (B) filled in the second storage container (34) to the auxiliary adsorption reactor (22). Measure the concentration of harmful gases. At this time, when the harmful gas concentration is higher than the standard value set in the control PC program, the fourth valve (V4) is opened to allow the recycled adsorbent (B) stored in the second storage container (34) to be discharged to the second supply line (44). It is filled into a pressurized storage container (35).

The storage amount of the recycled adsorbent (B) filled in the second pressurized storage container (35) is proportional to the opening time of the fourth valve (V4) and is determined according to the volume of the second pressurized storage container (35).

When the second pressurized storage container 35 is completely filled with the recycled adsorbent (B), the fourth valve (V4) is blocked, followed by the twelfth valve (V12) and the fourteenth valve (V14).

The auxiliary adsorption reactor 22 is injected with high-pressure gas containing harmful gases, and in order to supply the recycled adsorbent (B), the internal pressure of the second pressurized storage container 35 and the pressure collection container 36 is adjusted to the above-mentioned level. It must be equal to the internal pressure of the auxiliary adsorption reactor (22).

Accordingly, high-pressure nitrogen is supplied to the second pressurized storage container 35 and the pressure collection container 36 to pressurize them.

In detail, the 16th valve (V16) and the 18th valve installed in the third nitrogen supply line 53 and the fourth nitrogen supply line 54 are used to supply high-pressure nitrogen stored in the high-pressure nitrogen tank 61. By opening (V18), high-pressure nitrogen is supplied to the second pressurized storage container 35 and the pressure collection container 36, thereby pressurizing it.

At this time, the fourth static pressure transmitter (P4) and the sixth static pressure transmitter (P6) installed in the second pressurized storage container 35 and the pressure collection container 36, and the third differential pressure transmitter (PDT3) installed in the auxiliary adsorption reactor 22 ) and the fourth differential pressure transmitter (PDT4) are pressurized, and when the third differential pressure transmitter (PDT3) and the fourth differential pressure transmitter (PDT4) indicate 0, the sixteenth valve (V16) and the eighteenth valve (V16) Complete pressurization by blocking the valve (V18) to stop nitrogen supply.

Thereafter, the fifth valve (V5) and the sixth valve (V6) are opened to allow the recycled adsorbent (B) stored in the second pressurized storage container (35) to be supplied to the upper part of the auxiliary adsorption reactor (22) by gravity. The waste adsorbent (C) used in 22) is filled into the pressurized collection container (36) through the second discharge line (45).

When the recycling adsorbent filling and waste adsorbent (B) discharge are completed, the fifth valve (V5) and the sixth valve (V6) are blocked, and the twelfth valve (V12) connected to the second pressurized storage container (35) is opened. This releases the internal pressure (nitrogen) to the outside. At this time, the pressure is reduced until the indicated value of the fourth static pressure transmitter (P1) becomes 0, and when the pressure reduction of the second pressurized storage container (35) is completed, the fourth valve (V4) is reopened to release the recycled adsorbent (B). Fill the second pressurized storage container (34) again.

In addition, the fourteenth valve (V14) connected to the pressurized collection container (36) filled with the waste adsorbent (C) is opened to discharge the internal pressure (nitrogen) to the outside, and the indication value of the sixth static pressure transmitter (P6) is Depressurize until it becomes 0.

Thereafter, when the pressure collection container 36 is completely depressurized, the seventh valve V7 is opened to discharge the spent adsorbent C filled therein to the outside, and the seventh valve V7 is blocked. At this time, the waste adsorbent (C) discharged to the outside can be collected and discarded, or regenerated and used again as a new adsorbent (A) in the system.

Meanwhile, in the harmful gas removal system contained in the high-pressure gas, supply and discharge of new adsorbent (A) to the main adsorption reaction unit, circulation of recycled adsorbent (B) from the main adsorption reaction unit to the auxiliary adsorption reaction unit, and the auxiliary adsorption reaction. The above operation, which includes supplying and discharging the auxiliary adsorbent (B) to the unit, can be defined as one cycle.

In addition, the harmful gas removal system contained in the high-pressure gas determines the time when the adsorbent inside the main adsorption reactor 21 is destroyed or when some activity remains, depending on the type of harmful gas contained in the high-pressure gas, the performance of the adsorbent, etc. The operating conditions can be set differently depending on the requirements for purifying harmful gases.

The system for removing harmful gases contained in high-pressure gas according to the present invention discussed above is a system for removing harmful gases contained in high-pressure gas that minimizes the pressure differential problem occurring in existing adsorption facilities in which adsorbents such as activated carbon are installed in the form of a fixed bed inside the adsorption tower. It has the effect of providing.

In addition, it is effective in providing a system for removing harmful gases contained in high-pressure gas that can be used at a pressure exceeding normal pressure (1 atmosphere).

In addition, there is an effect of providing a system for removing harmful gases contained in high-pressure gas with improved use efficiency of the adsorbent by recycling the adsorbent with some activity remaining in the previously discarded adsorbent and recycling the adsorbent.

In addition, it is effective in providing a system for removing harmful gases contained in high-pressure gas that measures the concentration of harmful gases in real time and allows continuous processing without stopping the operation of the equipment, which automatically supplies, circulates, and discharges the adsorbent.

In addition, as the waste adsorbent is automatically discharged to the outside, the inconvenience of dismantling the reactor and filling the adsorbent, unlike existing adsorption facilities, is reduced.

In addition, it is a method of measuring and automatically controlling the concentration (components) of harmful gases in real time, allowing users to monitor and respond in real time through a monitoring device such as a PC, which has the effect of increasing convenience.

In this specification, only a few examples are described among the various embodiments performed by the present inventors, but the technical idea of the present invention is not limited or restricted thereto, and of course, it can be modified and implemented in various ways by those skilled in the art.

10: Main gas line
21: main adsorption reactor, 31: first storage vessel, 32: first pressurized storage vessel, 33: pressurized recirculation storage vessel
22: auxiliary adsorption reactor, 34: second storage container, 35: second pressurized storage container, 36: pressurized collection container
41: first supply line, 42: first discharge line, 43: recirculation line, 44: second supply line, 45: second discharge line
51: first nitrogen supply line, 52: second nitrogen supply line, 53: third nitrogen supply line, 54: fourth nitrogen supply line, 61: high pressure nitrogen tank.
V1 to V18: 1st valve to 18th valve
P1 to P5: first static pressure transmitter to fifth static pressure transmitter
PDT1 to PDT4: first differential pressure transmitter to fourth differential pressure transmitter
A: New adsorbent, B: Recycled adsorbent, C: Waste adsorbent
D1: first detection unit, D2: second detection unit, D3: third detection unit

Claims (13)

In the harmful gas removal system,
The main gas line through which harmful gases contained in high-pressure gas are introduced and discharged;
a main adsorption reaction unit disposed on the main gas line and removing the harmful gas through an adsorption reaction; and
an auxiliary adsorption reaction unit disposed on the main gas line and installed in front of the main adsorption reaction unit to primarily remove the harmful gas; Including,
The main adsorption reaction unit contains a new adsorbent, and the auxiliary adsorption reaction unit contains a recycled adsorbent,
The recycled adsorbent recycles the new adsorbent used in the adsorption reaction in the main adsorption reaction unit,
It includes a recirculation line connecting the main adsorption reaction unit and the auxiliary adsorption reaction unit to supply the recycled adsorbent to the auxiliary adsorption reaction unit.
A system for removing harmful gases contained in high-pressure gas. According to paragraph 1,
The main adsorption reaction unit includes a first storage container, a first pressurized storage container, a main adsorption reactor, and a pressurized recirculation storage container,
The first storage container, the first pressurized storage container, and the main adsorption reaction unit are connected to a first supply line,
The main adsorption reactor and the pressurized recirculation storage vessel are connected to a first discharge line,
A system for removing harmful gases contained in high-pressure gas. According to paragraph 2,
The first pressurized storage container is equipped with a first static pressure transmitter,
The main adsorption reactor is equipped with a second static pressure transmitter,
The pressurized recirculation storage container is installed with a third static pressure transmitter,
A first differential pressure transmitter is installed between the first pressurized storage vessel and the main adsorption reactor,
A second differential pressure transmitter is installed between the main adsorption reactor and the pressurized recirculation storage vessel,
A system for removing harmful gases contained in high-pressure gas. According to paragraph 1,
The auxiliary adsorption reaction unit includes a second storage container, a second pressurized storage container, an auxiliary adsorption reactor, and a pressure collection container,
The second storage vessel, the second pressurized storage vessel, and the auxiliary adsorption reactor are connected to a second supply line,
The auxiliary adsorption reactor and the pressure collection vessel are connected to a second discharge line,
A system for removing harmful gases contained in high-pressure gas. According to clause 4,
The second pressurized storage container is equipped with a fourth static pressure transmitter,
The auxiliary adsorption reactor is equipped with a fifth static pressure transmitter,
The pressurized collection container is equipped with a sixth static pressure transmitter,
A third differential pressure transmitter is installed between the second pressurized storage vessel and the auxiliary adsorption reactor,
A fifth differential pressure transmitter is installed between the auxiliary adsorption reactor and the pressure collection vessel,
A system for removing harmful gases contained in high-pressure gas. According to paragraph 1,
The harmful gas removal system further includes a high-pressure nitrogen tank for storing nitrogen,
The nitrogen is supplied to the main adsorption reaction unit and the auxiliary adsorption reaction unit,
A system for removing harmful gases contained in high-pressure gas. According to paragraph 1,
The harmful gas removal system includes a detection unit that detects the concentration of harmful gas on the main gas line; and
It further includes a control unit that controls the system by analyzing the concentration data of the harmful gas measured by the detection unit,
A system for removing harmful gases mixed with high-pressure gas. In clause 7,
The detection unit includes a first detection unit installed in front of the auxiliary adsorption reaction unit;
a second detection unit installed between the auxiliary adsorption reaction unit and the main adsorption reaction unit; and
A third detection unit installed at the rear of the main adsorption reaction unit; comprising
A system for removing harmful gases contained in high-pressure gas. In clause 7,
The harmful gas system is equipped with a plurality of valves that control the supply and discharge of adsorbent.
The valve is provided as an ON-OFF valve driven by pneumatic pressure and is automatically controlled in conjunction with the control unit.
A system for removing harmful gases contained in high-pressure gas. Injecting high-pressure gas containing harmful gas into the main gas line;
An adsorption step of adsorbing and removing harmful gases contained in the high-pressure gas;
A discharge step of discharging the high-pressure gas from which the harmful gas is adsorbed and removed to the outside,
The adsorption step includes an adsorbent circulation step in which the harmful gas concentration is analyzed in real time, a new adsorbent is filled, and the spent adsorbent is removed.
Method of removing harmful gases using a harmful gas removal system. According to clause 10,
The adsorption step includes a first adsorption step of adsorbing and removing harmful gases contained in the high-pressure gas through an auxiliary adsorption reaction unit; and
Including a second adsorption step of adsorbing and removing harmful gases from the high-pressure gas that has performed the first adsorption step through the main adsorption reaction unit.
Method of removing harmful gases using a harmful gas removal system. According to clause 10,
The adsorbent circulation step is,
A first concentration measurement step of measuring the harmful gas concentration in real time at a third detection unit;
A first filling step of supplying the new adsorbent stored in the first storage container to the first pressurized storage container when the harmful gas concentration measurement value is greater than the reference value;
A first pressurization step of supplying high-pressure nitrogen to the first pressurized storage container and the pressurized recirculation storage container to equalize the internal pressure of the main adsorption reactor; and
Comprising a second filling step of supplying the recycled adsorbent stored in the main adsorption reactor to a pressurized recirculation storage container and supplying the new adsorbent stored in the first pressurized storage container to the main adsorption reactor.
Method of removing harmful gases using a harmful gas removal system. According to clause 12,
The adsorbent circulation step further includes a recycled adsorbent recirculation step,
The recycling step includes a third filling step of supplying the recycled adsorbent stored in the pressurized recirculation storage container to a second storage container;
A second concentration measurement step of measuring the harmful gas concentration in real time at the second detection unit;
A fourth filling step of supplying the recycled adsorbent stored in the second storage container to the second pressurized storage container when the harmful gas concentration measurement value is greater than the reference value;
A second pressurization step of supplying high-pressure nitrogen to a second pressurized storage vessel and a pressurized collection vessel to pressurize it to the same internal pressure of the auxiliary adsorption reactor; and
A fifth filling step of supplying the waste adsorbent stored in the auxiliary adsorption reactor to a pressurized collection container and supplying the recycled adsorbent stored in the second pressurized storage container to the auxiliary adsorption container.
Method of removing harmful gases using a harmful gas removal system.

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