KR101793551B1 - Exhaust gas analyzing system and analyzing method available multi-point measurement - Google Patents

Abstract

Disclosed are a system to analyze a component of an exhaust gas, and a method of analyzing a component of the exhaust gas. According to the present invention, a dual pipe of a first and second pipe is inserted into an exhaust duct, and a flow stream, in which exhaust gas in the exhaust duct flows from the first pipe to the second pipe by a pressure difference generated by different diameters of the first and second pipes, is formed. As such, a sample gas is extracted from the exhaust duct to supply the same to a gas analyzer installed outside the exhaust duct. A plurality of inlet holes having a part of the exhaust gas in the exhaust duct introduced thereinto are formed in the first pipe to allow components thereof to be analyzed by the gas analyzer in a state where the components of the exhaust gas introduced on each position are mixed. Accordingly, a component standard value of the exhaust gas may be set using only one gas analyzer even in the exhaust duct wherein wind drift occurs.

Description

TECHNICAL FIELD [0001] The present invention relates to an exhaust gas component analysis system and an exhaust gas component analysis method capable of multi-

The present invention relates to an exhaust gas component analyzing system and an exhaust gas component analyzing method capable of multi-point measurement, and more particularly, to a method of analyzing exhaust gas from outside of an exhaust duct by extracting a part of exhaust gas passing through an exhaust duct And a method for analyzing an exhaust gas component.

In general, in marine combustion facilities or onshore plants handling petrochemical related products, various kinds of harmful substances which are harmful to human body through respective processes are generated in the combustion process and are discharged in the form of exhaust gas.

Such harmful substances include sulfur oxides, nitrogen oxides, carbon monoxide, sulfur dioxide, hydrogen chloride, and ammonia. Such harmful substances are not only harmful to the human body but also have a great environmental impact. Therefore, And is subject to legal / administrative restrictions.

Accordingly, there is provided an analyzer for extracting a part of the exhaust gas discharged through the exhaust duct and analyzing various components of the exhaust gas at a place where a large amount of exhaust gas is generated, such as a ship combustion facility, a land plant, We are taking appropriate action accordingly.

A method of analyzing and measuring the components of the exhaust gas discharged through the exhaust duct includes sampling a part of the exhaust gas discharged from the exhaust duct and sending it to a measuring instrument installed in a specific place through a sampling line, (In-Situ) measurement system that measures and analyzes the exhaust gas components in real time on site by directly inserting the probe in the exhaust duct.

In recent years, in-situ measurement methods are favored because it is most accurate to measure the exhaust gas directly from the exhaust duct.

1 is a view showing a conventional gas analyzer 1 according to an in situ measurement method.

Referring to FIG. 1, a conventional gas analyzer 1 according to the in-situ measurement method includes a main body 10; A probe 20 connected at one end to the main body 10 and extending across the inside of the exhaust duct D through the wall of the exhaust duct D; And a flange 30 fixed to the wall of the exhaust duct D to support the probe 20 when the exhaust duct D passes through the wall of the exhaust duct D.

2 is a view showing a state in which the conventional gas analyzer 1 according to the in-situ measurement method is inserted into the exhaust duct D. FIG.

2, a gas sensor 21 for analyzing the composition of a gas is provided in the probe 20 and a gas inlet 22 for introducing exhaust gas into the probe 20 is provided at the other end of the probe 20 Is formed.

A measurement hole (not shown) is formed in the outer circumferential surface of the probe 20 in the direction of the flow of the exhaust gas in the exhaust duct D instead of the gas inlet 22 shown in FIG. 2, It is also possible to analyze the composition of the gas while passing through it.

The conventional gas analyzer 1 according to the in-situ measurement method is configured such that the probe 20 is inserted directly into the exhaust duct D so that the gas sensor 21 provided inside the probe 20 is inserted into the exhaust duct Damage to the gas sensor 21 may occur due to the heat at a high temperature and this may obstruct the accurate detection of the gas component by the gas sensor 21 or may deteriorate the life of the gas sensor 21 Can lead to problems.

To prevent such a problem, JP-A-2009-42165 discloses a configuration in which cooling air is supplied to the gas sensor side inside the probe.

However, such a configuration is not a fundamental solution because the apparatus is complicated and the gas sensor is not completely separated from the high-temperature heat since a configuration for supplying cooling air to the gas sensor side is additionally required.

In addition, since the gas sensor 21 is disposed inside the exhaust duct D through which the high-temperature exhaust gas of 300 ° C or higher is discharged, in order to maintain the conventional gas analyzer 1, Maintenance had to be done in the state.

Meanwhile, according to the sampling measurement method of analyzing and measuring the components of the exhaust gas, the sample gas extracted from the exhaust duct is treated by the pretreatment device installed between the exhaust duct and the analyzer, and includes the process of removing water or other foreign substances in the exhaust gas After the preprocessing, the analyzer analyzes the gas.

However, since the conventional gas analyzer 1 according to the in-situ measurement method shown in FIGS. 1 and 2 analyzes gas components directly in the exhaust duct D, There is no.

Therefore, some of the exhaust gas flowing into the probe 20 may be mixed with moisture or other foreign matter such as ashes, which is a factor that hinders the accuracy of the analysis work of the gas.

Further, there is a problem that a separate purge device 40 must be provided in order to remove foreign matter such as ash remaining in the probe 20, which complicates the configuration of the device There is a problem of increasing facility cost.

Japanese Patent Application Laid-Open No. 2009-042165 (published on February 26, 2009)

In order to solve the above problems, the present invention is characterized in that the gas analyzer attachment portion is provided outside the exhaust duct, and a part of the exhaust gas passing through the exhaust duct is extracted to the gas analyzer side, To be carried out immediately.

In addition, the present invention aims at constructing an exhaust gas component analysis system which does not require a separate purge device by performing a pre-treatment process before some exhaust gas extracted to the outside of the exhaust duct is introduced into the gas analyzer, We want to make it simple to do without additional devices.

Also, in the present invention, it is desired to set the standard value of the component of the exhaust gas by using only one gas analyzer in the exhaust duct where the drift phenomenon occurs.

In order to achieve the above object, the present invention provides an exhaust gas component analysis system capable of multi-point measurement inside an exhaust duct.

The exhaust gas component analyzing system according to the present invention includes: a first pipe extending through a wall of an exhaust duct and having one end extending into the exhaust duct; A pretreatment unit connected to the other end of the first pipe to remove moisture or foreign matter contained in the exhaust gas flowing through the first pipe; And a gas analyzer attached to the upper portion of the pretreatment unit for analyzing components of exhaust gas from which moisture or foreign matter has been removed, wherein a plurality of inflow holes through which a part of the exhaust gas in the exhaust duct flows are formed in the first pipe .

And a second pipe extending through the wall of the exhaust duct and having one end extending into the exhaust duct and the other end connected to the pretreatment unit, and the second pipe is installed below the first pipe A diameter of the first pipe is smaller than a diameter of the second pipe, and a pressure difference generated by a difference in diameter between the first pipe and the second pipe causes a part of the exhaust gas in the exhaust duct to flow through the first pipe And flows into the exhaust duct through the pre-treatment unit and through the second pipe.

The length of the first pipe may be longer than the length of the second pipe.

Moisture or foreign matter in the exhaust gas flowing into the pre-treatment section moves downward by gravity and is discharged again into the exhaust duct by the discharge pressure of the second pipe.

An induction plate for guiding the inflow of exhaust gas may be installed at one side of the inflow hole.

In order to achieve the above object, the present invention also provides a method for analyzing an exhaust gas component capable of multipoint measurement in an exhaust duct.

A method for analyzing an exhaust gas component according to the present invention includes the steps of: (a) introducing a part of exhaust gas in the exhaust duct through a plurality of inflow holes formed in a first pipe inserted into the exhaust duct; (b) the exhaust gas flowing through the inlet hole is transferred to the pretreatment unit through the first pipe; (c) Moisture or foreign matter contained in the exhaust gas transferred to the pretreatment unit is dropped by gravity, and an exhaust gas component in the gaseous phase flows into a gas analyzer attached to the upper portion of the pretreatment unit; And (d) exhausting the exhaust gas from the pre-processing unit to the inside of the exhaust duct through a second pipe inserted into the exhaust duct, wherein in the step (b) And the exhaust gas components that are respectively introduced are mixed in the process of being transported through the first pipe.

The method of claim 1, wherein, in the step (a) and the step (d), a force of the exhaust gas flowing through the first pipe and a force of exhausting the exhaust gas through the second pipe cause the diameter of the first pipe Is generated by a pressure difference caused by making the diameter smaller than the diameter of the pipe.

According to the present invention, since the attaching portion of the gas analyzer is located outside the exhaust duct, it is possible to prevent the gas analyzer from being damaged by the heat of the high temperature inside the exhaust duct, and when the gas analyzer abnormality occurs, The gas analyzer can be checked and maintained from time to time.

Further, the exhaust gas component analyzing system according to the present invention does not require a separate suction device because the sample gas is extracted from the exhaust duct by the flow field generated by the pressure difference of the piping.

Further, the exhaust gas component analyzing system according to the present invention has the effect of performing the pre-treatment before measurement of components of the exhaust gas even without a separate heating device or filter.

The exhaust gas component analyzing system according to the present invention is advantageous in that the in-situ measuring method capable of measuring and analyzing the components of the exhaust gas in real time in the field and the sampling measuring method for performing the pretreatment process before supplying the sample gas to the analyzer Method.

The exhaust gas component analyzing system according to the present invention is characterized in that a plurality of inlet holes are formed in a pipe through which exhaust gas flows and component analysis is performed by a gas analyzer in a state where components of the exhaust gas flowing in each position are mixed , It is possible to set the standard value of the composition of the exhaust gas by using only one gas analyzer in the exhaust duct where the drift phenomenon occurs.

In addition, according to the present invention, there is an effect that the maintenance and cleaning of the piping of the exhaust duct can be easily performed through the pipe cleaning port.

1 is a view showing a conventional gas analyzer according to an in-situ measurement method.
2 is a view showing a state in which a conventional gas analyzer according to the in-situ measurement method is inserted into an exhaust duct.
3 is a view showing the flow of exhaust gas in the denitration facility.
4 is a view showing an exhaust gas component analysis system according to the present invention.
FIG. 5 is an enlarged view of only the first pipe in the exhaust gas component analyzing system according to the present invention, wherein (a) schematically shows the flow of the exhaust gas, and (b) shows the actual simulation results.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention. Like reference symbols in the drawings denote like elements.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the following examples can be modified in various forms, and the scope of the present invention is not limited to the following examples.

4 is a view showing an exhaust gas component analysis system according to the present invention.

FIG. 5 is an enlarged view of only the first pipe in the exhaust gas component analyzing system according to the present invention, wherein (a) schematically shows the flow of the exhaust gas, and (b) shows the actual simulation results.

4, a system 100 for analyzing exhaust gas components according to the present invention includes a first pipe 110 passing through a wall of an exhaust duct D and having one end extending into an exhaust duct D; A second pipe 120 passing through the wall of the exhaust duct D and having one end extending into the exhaust duct D; A pretreatment unit connected to the other end of the first pipe 110 and the second pipe 120 for removing water or other foreign matter such as ashes contained in the exhaust gas flowing through the first pipe 110 130); And a gas analyzer 140 attached to the upper portion of the pretreatment unit 130 to analyze the composition of the exhaust gas.

The other end of the first pipe 110 is connected to the preprocessing unit 130 and one end of the first pipe 110 is extended into the exhaust duct D through the wall of the exhaust duct D.

The second pipe 120 is disposed on the downstream side of the exhaust gas flow in the exhaust duct D rather than the first pipe 110 and the other end is connected to the pretreatment unit 130 like the first pipe 110, One end of the two pipe 120 extends through the wall of the exhaust duct D and into the exhaust duct D.

4 and 5, a plurality of inflow holes 111 are formed in the first pipe 110 in a direction facing the flow of exhaust gas.

The number and size of the inlet holes 111 can be estimated according to the size of existing equipment or the result of flow analysis of existing equipment.

The inlet hole 111 may have various shapes such as a circle, an ellipse, or a square. When the inlet hole 111 is elongated in the longitudinal direction of the first pipe 110 in the shape of an ellipse or a rectangle, the area of the hole through which the exhaust gas flows is increased, 111). ≪ / RTI >

However, if the area of the inlet hole 111 is too wide, the effect of generating the flow field of the exhaust gas may be insignificant due to the difference in diameters of the first pipe 110 and the second pipe 120, It is preferable that the area of the inlet hole 111 is formed so as not to exceed 1.5 times the sectional area of the first pipe 110.

More specifically, it is most preferable that the area of the inlet hole 111 is 0.5 to 1.5 times the sectional area of the passage formed in the first pipe 110.

The first pipe 110 preferably extends as long as possible inside the exhaust duct D. Even if a drift phenomenon occurs in which the fog of the exhaust gas is excessively directed to one side of the inside of the exhaust duct D so that a deviation of the exhaust gas component occurs in the exhaust duct D, It is necessary to calculate the measured value of the component as a standard value by mixing, thereby increasing the reliability of the measurement data.

That is, the exhaust gas component analyzing system 100 according to the present invention extracts exhaust gas from a multi-point in the exhaust duct D, analyzes the mixed exhaust gas components, To more precisely measure the components of the exhaust gas discharged into the combustion chamber.

One end of the first pipe 110 has a curved shape along the flow of the exhaust gas, and the end of the first pipe 110 is positioned at the end of the end of the first pipe 110 So that the exhaust gas flowing into the formed inlet hole 111f can be easily guided to the pretreatment unit 130 side.

In addition, a plurality of inlet holes 111c formed at the midpoint of the first pipe 110 may be provided with an induction plate 112 for inducing the smooth flow of the exhaust gas.

The induction plate 112 is inclined at one side of the inlet hole 111c so that the exhaust gas flowing into the inlet hole 111c slides along the inclined surface of the induction plate 112, (110). ≪ / RTI >

The exhaust gas flowing through the plurality of inlet holes 111 is mixed in the process of being transferred to the preprocessing unit 130 and is pre-processed by the preprocessor 130 and then supplied to the gas analyzer 140, (140). ≪ / RTI >

That is, the component of the exhaust gas analyzed by the gas analyzer 140 can be regarded as an average value of the components of the exhaust gas flowing in each of the inlet holes 111, and is selected as a standard value of the exhaust gas component.

4, the first pipe 110 has a smaller diameter than the second pipe 120 in this embodiment.

A negative pressure is applied to the inside of the exhaust duct D by a discharge fan (not shown) provided at the outlet of the exhaust duct D. At this time, the diameter of the first pipe 110 is smaller than the diameter of the second pipe 120 A pressure difference is generated between the first pipe 110 and the second pipe 120. Due to such a pressure difference, a flow field is formed with respect to a part of the exhaust gas as shown by a thick arrow in the horizontal direction in FIG.

More specifically, the pressure acting on the second pipe 120 is lower than the pressure acting on the first pipe 110, so that a part of the exhaust gas in the exhaust duct D flows into the first pipe 110 And the exhaust gas flowing into the first pipe 110 is discharged to the inside of the exhaust duct D through the second pipe 120 via the pretreatment unit 130.

That is, the exhaust gas component analyzing system 100 according to the present invention can smoothly partly discharge a part of the exhaust gas from the exhaust duct D by the flow field formed by the pressure difference of the pipe without using a separate exhaust gas extracting device such as a vacuum generator And can be extracted to the outside of the exhaust duct (D).

The diameters of the first pipe 110 and the second pipe 120 may be determined according to the size of the exhaust duct D and the flow rate of the exhaust gas flowing through the exhaust duct D. The sectional area of the second pipe 120 When the diameters of the first pipe 110 and the second pipe 120 are set to be 1.5 to 3 times the sectional area of the first pipe 110, Apparently. Here, the cross-sectional area of the pipe refers to the cross-sectional area of the passage formed by the pipe.

In this embodiment, the first pipe 110 and the second pipe 120 are arranged in a straight line in the flow direction of the exhaust gas, and the second pipe 120 is shorter than the first pipe 110 desirable.

When the flow of the exhaust gas in the exhaust duct D reaches the first pipe 110 side, the first pipe 110 receives resistance and the pressure is somewhat higher.

After the exhaust gas flows through the first pipe 110, the space indicated by A in FIG. 4, that is, the second pipe 120 is shorter than the first pipe 110, When flowing into the empty space on the downstream side, the flow of the exhaust gas is slightly out of the resistance of the first pipe 110, so that the pressure is slightly lowered, thereby causing the decompression. (The effect of Bernoulli)

Therefore, if the second pipe 120 is shorter than the first pipe 110, the pressure is somewhat higher on the first pipe 110 side and the pressure is somewhat lowered on the second pipe 120 side, A more reliable effect can be obtained in forming the flow field by the pressure difference between the first pipe 110 and the second pipe 120.

The exhaust gas component analyzing system 100 according to the present invention is fixed to the wall of the exhaust duct D through which the first pipe 110 and the second pipe 120 pass, And a flange 150 for supporting the pipe 120.

The pretreatment unit 130 provides a space in which the moisture contained in the exhaust gas transferred from the first pipe 110 or other foreign matter such as ashes is removed.

An analyzer attaching portion 131 to which the gas analyzer 140 is attached may be formed on the preprocessing portion 130.

In the pretreatment unit 130, water or other foreign matter such as ash is dropped by gravity from the exhaust gas components flowing through the first pipe 110, and the second pipe 110 installed below the first pipe 110, The moisture or other foreign matter is discharged together into the exhaust duct D by the pressure at which the exhaust gas is discharged through the exhaust duct 120.

Proper processing is required before some exhaust gas extracted from the exhaust duct D flows into the gas analyzer 140 side, because it is desirable that the gas maintains a uniform gas phase in order to accurately analyze the gas component.

For this purpose, the conventional sampling measurement method is to subject the sample gas extracted from the exhaust duct to a pretreatment process by a pretreatment device before sending it to the analysis. Such a pretreatment apparatus is provided with a heater for removing moisture in the exhaust gas or a filter for removing other foreign matter.

However, according to the present embodiment, moisture or other foreign matter contained in the exhaust gas transferred to the preprocessing unit 130 is moved downward by the gravity, and the exhaust duct D is moved again by the discharge pressure of the second pipe 120, It is possible to perform the pretreatment before the component measurement of the exhaust gas without using a separate heating device or a filter.

In this embodiment, since the analyzer attachment portion 131 is formed on the upper portion of the preprocessing portion 130, the gas analyzer 140 attached to the analyzer attachment portion 131 is provided with a relatively light, It can be.

A moisture filter or a foreign matter filter may be provided in the analyzer attachment portion 131 for more reliably removing moisture or other foreign matter contained in the exhaust gas.

However, the present invention aims to simplify the pretreatment process of the exhaust gas even without a separate additional device. The moisture and other foreign substances contained in the exhaust gas are efficiently and efficiently discharged by the gravity and the discharge pressure of the second pipe 120 It is preferable that such an additional filter is not installed in terms of efficiency or cost of the system.

The gas analyzer 140 is attached to the analyzer attaching unit 131 and receives a uniform gas phase exhaust gas from which moisture or other foreign substances have been removed from the pretreatment unit 130 and analyzes the gas.

An analyzer attachment portion 131 is provided with an on-off valve to control the inflow of exhaust gas from the preprocessor 130 to the gas analyzer 140.

The exhaust gas component analyzing system 100 according to the present invention is not required to be concerned about the damage of the gas analyzer 140 due to the heat at high temperature because the attaching portion of the gas analyzer 140 is located outside the exhaust duct D And it is possible to maintain the gas analyzer 140 even in the state where the existing equipment is continuously operated when the gas analyzer 140 is abnormally generated.

A probe gun (not shown) connected to a sampling line (not shown) is attached to the analyzer attaching unit 131 instead of the gas analyzer 140 to measure the exhaust gas component analyzing system 100 according to the present invention It is also possible to utilize it.

The pre-processing unit 130 may be provided with an air introduction valve 132. When the air introducing valve 132 is opened, external air is introduced into the exhaust duct D, and moisture or other foreign matter accumulated in the first pipe 110 and the second pipe 120 together with the exhaust duct D, Blow into the inside.

The air introduction valve 132 may be an automatic valve and may set an opening and closing time of the valve by an electrical signal to periodically remove moisture or other foreign matter remaining in the first pipe 110 and the second pipe 120 have.

It is preferable that the automatic opening and closing of the air introducing valve 132 is performed in a relatively short cycle in units of minutes or units of time.

A pipe cleaning port 133 may be formed at one side of the preprocessing unit 130 and a purge valve 134 may be installed at the inlet of the pipe cleaning port 133.

The pipe cleaning unit 133 is configured to clean the interior of the exhaust duct D by opening the purge valve 134 and blowing the compressed air into the exhaust duct D through the pipe cleaning port 133, Foreign substances remaining in the interior of the container D can be simply cleaned.

At this time, the compressed air supplied from the pipe cleaning port 133 to the inside of the exhaust duct D passes through the first pipe 110 and the second pipe 120, so that the first pipe 110 and the second pipe 120, Moisture remaining in the inside of the honeycomb structure 120 or other foreign materials such as ashes may be removed together.

Air or other foreign substances remaining in the first pipe 110 and the second pipe 120 are removed by introducing outside air through the air introduction valve 132. However, Since the air has a weaker force than the compressed air, the first pipe 110 and the second pipe 120 are purged more reliably through the pipe cleaning port 133. [

The purge valve 134 may be a ball valve and may be opened on a daily or weekly basis to perform cleaning in the piping.

However, the present invention is not limited by the above description, and a period of opening / closing of the air introduction valve 132 or a period of cleaning through the pipe cleaning port 133 may be set according to the characteristics of the system.

In addition, the compressed air may be supplied to the air inlet valve 132 side, or the purge valve 134 may be provided as an automatic valve so that automatic purging may be periodically performed by an electrical signal.

Next, with reference to Fig. 4, a method for analyzing exhaust gas components according to the present invention will be described.

As described above, in the present embodiment, the exhaust gas discharged through the exhaust duct D flows from the first pipe to the second pipe by the pressure difference between the first pipe 110 and the second pipe 120 Thereby forming a flow.

Accordingly, when the exhaust gas discharged through the exhaust duct D reaches the first pipe 110 side, a part of the exhaust gas flows through the plurality of the inlet holes 110 formed in the first pipe 110. (First step)

The exhaust gas flowing through the first pipe 110 is transferred to the pretreatment unit 130 which connects the first pipe 110 and the flow path of the second pipe 120. (Second step)

In the second step, the exhaust gas components respectively introduced from the plurality of inflow holes 111 are mixed in the process of being transferred to the pretreatment unit 130 through the first pipe 110.

Moisture or foreign matter contained in the exhaust gas transferred to the preprocessing unit 130 is dropped by gravity and the exhaust gas component in the gaseous phase flows into the gas analyzer 140 attached to the upper portion of the preprocessing unit 130. (Third step)

The exhaust gas in the preprocessing unit 130 is discharged into the exhaust duct D through the second pipe 120 by the flow. (Step 4)

In the third step, water or foreign matter dropped by gravity can be discharged again into the exhaust duct (D) together with the exhaust gas by the discharge pressure of the second pipe (120) in the fourth step.

The exhaust gas component analyzing method according to the present invention is a method for analyzing an exhaust gas component by introducing outside air through an air introducing valve 132 provided in the pretreatment unit 130 and removing moisture remaining in the first pipe 110 and the second pipe 120 Or other foreign matter into the exhaust duct (D).

The exhaust gas component analyzing method according to the present invention is characterized in that the compressed air is supplied into the exhaust duct D through the pipe cleaning port 133 formed at one side of the pretreatment unit 130 and the inside of the exhaust duct D And a cleaning step.

According to the present invention, since the attaching portion of the gas analyzer 140 is located outside the exhaust duct D, it is possible to prevent the gas analyzer 140 from being damaged by the high temperature heat inside the exhaust duct D, When an abnormality occurs in the analyzer 140, the gas analyzer 140 can be regularly inspected and maintained even when the existing facility is continuously operated.

The exhaust gas component analyzing system 100 according to the present invention is configured such that a part of the exhaust gas is discharged from the exhaust duct D by a flow field generated by a pressure difference between the first pipe 110 and the second pipe 120 Therefore, a separate suction device for extracting the sample gas is not required.

The system for analyzing exhaust gas components 100 according to the present invention is a system for analyzing the exhaust gas components of exhaust gas such as ash or other moisture in the exhaust gas extracted from the exhaust duct D via gravity and exhaust gas The exhaust gas is blown back into the exhaust duct D by the pressure at which the exhaust gas is discharged, so that there is an effect that the pretreatment before the component measurement of the exhaust gas can be performed without using a separate heating device or filter.

The exhaust gas component analyzing system 100 according to the present invention can extract and measure a part of the exhaust gas from the exhaust duct D and directly measure and analyze the components in the gas analyzer 140 provided outside the exhaust duct D The exhaust gas extracted from the exhaust duct D is supplied to the gas analyzer 140 while the pretreatment unit 130 removes moisture or other foreign matter such as ashes from the pretreatment unit 130. Therefore, It can be said that it has all the merits of measurement method.

In the exhaust gas component analyzing system 100 according to the present invention, a plurality of inlet holes 111 are formed in a first pipe 110 into which exhaust gas flows, and components of the exhaust gas flowing in each position are mixed The exhaust gas is supplied to the gas analyzer 140 side to perform the component analysis. Therefore, the standard component value of the exhaust gas can be set using only one gas analyzer in the exhaust duct where the drift phenomenon occurs.

In addition, the exhaust gas component analyzing system 100 according to the present invention has the effect of opening foreign substances in the exhaust duct D simply by opening the purge valve 134 attached to the pipe cleaner 133.

In the present invention, it is usually necessary to clean and clean the piping of the exhaust duct (D). However, in the present invention, it is possible to clean the piping simply by opening the pipe cleaning port (133) The maintenance and cleaning of the piping can be completed within 5 minutes.

That is, in the present invention, the above-mentioned effect can be achieved by adding the function of purging the pipe to the exhaust gas component analysis system 100 for analyzing the components of the exhaust gas.

While the present invention has been particularly shown and described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And should not be construed as limiting the scope of the invention.

100: exhaust gas component analysis system 110: first piping
111: inlet hole 120: second piping
130: preprocessing unit 131: analyzer attaching unit
132: air introduction valve 133: pipe cleaning port
134: purge valve 140: gas analyzer
150: Flange

Claims (8)

1. An exhaust gas component analysis system for exhausting exhaust gas through an exhaust duct,
A first pipe extending through the wall of the exhaust duct and having one end extending into the exhaust duct;
A second pipe extending through the wall of the exhaust duct and having one end extending into the exhaust duct;
A pretreatment unit connected to the other end of the first pipe and the other end of the second pipe to remove moisture or foreign substances contained in the exhaust gas flowing through the first pipe; And
And a gas analyzer attached to an upper portion of the pretreatment unit to analyze a component of exhaust gas from which moisture or foreign matter has been removed,
A part of the exhaust gas in the exhaust duct flows into the first pipe and is discharged into the exhaust duct again through the second pipe through the pretreatment unit,
Wherein the first pipe and the second pipe are located on the same line with respect to the exhaust gas flow in the exhaust duct and the second pipe is provided adjacent to the downstream side of the first pipe and is shorter than the first pipe, When the gas flows into the empty space on the downstream side of the first pipe, the pressure decreases as the flow of the exhaust gas deviates from the resistance of the first pipe and the speed increases,
Wherein the first pipe is formed with a plurality of inflow holes through which a part of the exhaust gas flows in the exhaust duct.
Exhaust gas component analysis system.
The method according to claim 1,
The diameter of the first pipe is smaller than the diameter of the second pipe,
A part of the exhaust gas in the exhaust duct flows into the first pipe through the pre-processing unit, passes through the second pipe again into the exhaust duct by a pressure difference generated by a difference in diameter between the first pipe and the second pipe, Characterized in that it forms a discharge flow field,
Exhaust gas component analysis system.
delete The method of claim 2,
Wherein moisture or foreign matter contained in the exhaust gas flowing into the pre-treatment section moves downward by gravity and is discharged again into the exhaust duct by the discharge pressure of the second pipe.
Exhaust gas component analysis system.
The method according to claim 1,
Characterized in that an induction plate for guiding the inflow of exhaust gas is provided on one side of the inflow hole,
Exhaust gas component analysis system.
delete delete delete

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