KR20180100755A - Control Device of A Desolvator For Failure And Control Method Thereof - Google Patents

Abstract

The present invention relates to a moisture removal device removing moisture before exhaust gas pollution concentration measurement and, more specifically, to a moisture removal device controller and a moisture removal device control method for malfunction prevention. To this end, provided is a moisture removal device controller for malfunction prevention including a plurality of high-capacity moisture removal devices positioned close to incoming gas (12); a plurality of standard moisture removal devices connected and remotely separated from the high-capacity moisture removal devices and relatively lower in moisture removal performance than the high-capacity moisture removal devices; an extraction line (50) connecting the high-capacity moisture removal device and the standard moisture removal device; a determination means for determining malfunction of the high-capacity moisture removal device and the standard moisture removal device; and a control unit selectively operating the high-capacity moisture removal devices and the standard moisture removal devices based on a determination result of the determination means.

Description

Technical Field [0001] The present invention relates to a control device for a water removal device and a control method thereof,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a water removal device for removing moisture before measuring the concentration of pollutants in exhaust gas, and more particularly, to a control device for a water removal device for preventing faults and a control method thereof.

While the rapid development of modern industrial society has improved the quality of life of human beings, it caused various environmental problems due to indiscreet natural degradation and development. Particularly, due to the rapid increase of energy consumption due to industrial development, the emission of air pollutant gas has increased rapidly, and the pollution problem caused by this is facing serious situation.

In order to prevent this, it is essential to understand the type and concentration of the gas emitted from various pollutants such as factories or automobile exhaust pipes.

Non-dispersive infrared (NDIR) analysis is widely used as a method of measuring the composition and concentration of such gases. The gas analyzer using non-dispersive infrared spectroscopy is a method of obtaining the gas concentration by measuring the light absorptance to the concentration using the characteristic that the gas molecule absorbs the light of a specific wavelength (infrared ray). That is, since specific gas molecules have a characteristic of absorbing only light of a specific wavelength band, it is necessary to measure light by irradiating gas molecules with light of various wavelengths and filtering only the light of the wavelength band absorbed by the gas molecules.

The nondispersive infrared gas analyzer requires only optical filters that transmit only the wavelengths to the photodetector, so that the system is simple and less costly than the dispersion system, and the gas selectivity and measurement reliability are high.

Figure 1 shows a measurement chamber 90 in which such a conventional pollutant source and an NDIR measuring device 92 are installed. As shown in FIG. 1, the chimney 10, which is one example of the exhaust pollution source, and the measurement room 90 are usually spaced apart by 50 m or more, and a Tele-Monitoring System (TMS) is constructed. The gas sample collected at the chimney 10 is transferred to the measurement chamber 90 along the extraction line 50. The extraction line 50 is maintained at a high temperature of 150 DEG C or more to prevent condensation of water vapor during the transfer.

As the conventional extraction line 50 of 50 m or more is maintained at a high temperature of 150 캜 or more, much power is required. This has led to the disadvantage that high operating costs are incurred and economic efficiency is deteriorated. In addition, high temperatures above 150 ° C always involve the risk of fire, threatening the fire safety of the entire factory, including the chimney.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a remote monitoring system for a pollutant source, And a control method thereof.

A second object of the present invention is to provide a control device of a moisture removal device for preparing a failure capable of measuring the concentration of exhaust gas without interruption by promptly performing a substitute operation even if a part of a plurality of moisture removal devices fails, And a control method thereof.

In order to achieve the above object, according to an embodiment of the present invention, there is provided a water treatment system comprising: a plurality of high-capacity moisture removal devices positioned close to a gas (12) A plurality of standard moisture removing devices which are remotely spaced apart from the high capacity moisture removing device and which have relatively lower water removing performance than the high capacity moisture removing device; An extraction line (50) connecting the high-capacity moisture removal device and the standard moisture removal device; A judging means for judging whether or not the high-capacity moisture removing device and the standard moisture removing device are faulty; And a control unit selectively operating the plurality of high-capacity moisture removing apparatuses and the plurality of standard moisture removing apparatuses based on the determination result of the determining unit.

The plurality of high-capacity moisture removing apparatuses include a first high-moisture moisture removing apparatus 20; And a second high-capacity moisture removing device 22 connected in parallel with the first high-capacity moisture removing device 20.

A first bypass 24 connected in parallel with the first and second high-capacity moisture removing devices 20 and 22; And a first valve (26) for opening and closing the first bypass (24) by the control unit.

In addition, the plurality of standard moisture removing apparatuses include a first standard moisture removing apparatus 70; And a second standard moisture removing device 72 connected in parallel with the first standard moisture removing device 70.

A second bypass 74 connected in parallel with the first and second standard moisture removal devices 70 and 72; And a second valve 76 for opening and closing the second bypass 74 by the control unit.

Further, the extraction line 55 can be extended by 30 m or more.

Further, the extraction line 55 further includes a temperature control device 55 capable of selectively maintaining the first temperature and the second temperature higher than the first temperature.

The first temperature is in the range of 40 to 60 占 폚, and the second temperature is in the range of 150 to 200 占 폚.

The judging means is at least one of the first humidity sensor 30 and the first pressure sensor 32 provided on the discharge line of the high-capacity moisture removing devices 20, 22.

The judging means is at least one of the second humidity sensor 80 and the second pressure sensor 82 provided on the discharge line 78 of the standard moisture removing devices 70 and 72.

The above object of the present invention is also achieved by a control method of the above-described control device, wherein the first sensor is installed in a discharge line of the first and second high-capacity moisture removing devices (20, 22) The control section operates one of the first and second high-capacity moisture removing devices 20 and 22 when all of the second sensors provided on the discharge line 78 of the water removing devices 70 and 72 are normal (S100) 1) operating one of the two standard moisture removing apparatuses 70 and 72 (S110); When the first sensor and the second sensor are both abnormal (S120), the control unit opens the first bypass 24 provided in parallel to the first and second high-capacity moisture removing apparatuses 20 and 22, (S130) of opening the second bypass (74) provided in parallel to the standard moisture removing device (70, 72); When the first sensor is operating normally and the second sensor is operating abnormally (S140), the control unit operates one of the first and second high capacity moisture removing apparatuses 20 and 22 and opens the second bypass 74 (S150); The control unit operates one of the first and second standard moisture removal devices 70 and 72 and the first bypass 24 is operated in the normal operation mode And a step (S160) of raising the temperature of the extraction line (50) by the control of the moisture removal device.

In addition, in the alternation operation steps S110 and S150, the extraction line 50 maintains the range of 40 to 60 占 폚.

Further, in the ascending step S160, the extraction line 50 is raised to the range of 150 to 200 占 폚.

The first sensor is at least one of the first humidity sensor 30 and the first pressure sensor 32 provided on the discharge line of the first and second high capacity moisture removing devices 20,

The second sensor is at least one of the second humidity sensor 80 and the second pressure sensor 82 provided on the discharge line 78 of the first and second standard moisture removing devices 70 and 72.

According to an embodiment of the present invention, the temperature of the extraction line can be kept low in the remote monitoring system for the pollutant source, so that the operation cost can be reduced through electricity saving. In addition, the low temperature of the extraction line can essentially prevent the risk of factory fire.

In addition, even if a situation occurs in which some of the plurality of moisture removal devices fail, the concentration of the exhaust gas can be measured without interruption by immediately performing an alternative operation. And, while the operator or the repairman arrives at the site to repair the failed water removal device, the entire water removal device can operate normally.

In addition, when the worst situation occurs in which all the moisture removal devices fail, there is an effect that the NDIR measurement device 92 can be protected by discharging the polluted gas to the atmosphere.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention given below, serve to further understand the technical idea of the invention. And should not be construed as interpreted.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a layout diagram showing a water removal device according to an embodiment of the present invention;
FIG. 2 is a system configuration diagram showing when the moisture removal device for normal operation of the failure shown in FIG. 1 operates normally;
FIG. 3 is a system configuration diagram showing the operation of the moisture removal device in the first poor state,
FIG. 4 is a system configuration diagram showing the operation of the moisture removal device in the second bad state,
FIG. 5 is a system configuration diagram showing when the moisture removal device for the failure shown in FIG. 1 operates in a dangerous state;
FIG. 6 is a flowchart showing a control method of a water removal device for a failure according to the present invention;
7 is an exploded perspective view of the high-capacity moisture removal device constituting a part of the present invention,
8 is a cross-sectional view of the high-capacity moisture removing apparatus shown in Fig. 7,
Fig. 9 is a system configuration diagram showing an example of the moisture removal device system shown in Fig. 1. Fig.

Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings. While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and are herein described in detail.

It is noted that the terms "comprises" or "having" in this application are intended to specify the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof, , Steps, operations, components, parts, or combinations thereof, as a matter of principle.

Also, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Example  Configuration

FIG. 1 is a layout diagram of a water removal apparatus according to an embodiment of the present invention, and FIG. 2 is a system configuration diagram showing a water removal apparatus for normal operation of the water removal apparatus shown in FIG. As shown in Figs. 1 and 2, a chimney 10 is disclosed as an example of an exhaust pollutant source. A first high capacity moisture removing device 20 and a second high capacity moisture removing device 22 are installed at a high position (for example, 10 to 30 m above the ground) of the stack 10 to sample the gas discharged from the stack 10. [ Are installed in parallel.

Fig. 7 is an exploded perspective view of the high-capacity moisture removal device constituting a part of the present invention, and Fig. 8 is a cross-sectional view of the high-moisture moisture removal device shown in Fig. As shown in Figs. 7 and 8, the high-capacity moisture removal devices 20 and 22 are water removal methods using a cyclone system. The high-capacity moisture removing devices 20 and 22 cool the moisture by using a Peltier element installed therein, phase-change into a solid state, separate and discharge the water, and the dry gas from which moisture is removed is separately discharged to the upper part. That is, the upper portion of the high-capacity moisture removal device shown in Figs. 7 and 8 is connected to the extraction line 50. Fig.

The high-capacity moisture removal device shown in FIGS. 7 and 8 is characterized in that it can remove moisture by treating a larger amount of gas than the standard moisture removal device. Such a high-capacity moisture removal device (or a high-capacity moisture removal device) is a moisture removal device through which a sample is passed at a rate of about 5 to 10 L / min or more due to a high-capacity dispensing pump for sampling. A high-capacity dispense pump can dispense samples to one or more measuring devices. Such a high-capacity moisture removing device has a well-known structure, and a detailed description thereof will be omitted. 7 and 8 of the present invention, a cyclone type high-capacity water removal device has been shown and described, but it is also possible to substitute another type of water removal device known to those skilled in the art for a method capable of removing water from a large amount of inflow gas .

The first bypass 24 and the first valve 26 are provided in parallel with the first and second high capacity moisture removing apparatuses 20 and 22 and the first valve 26 is connected to a control command The first bypass 24 can be opened and closed.

Although the member numbers are not given, respective opening / closing valves are provided at the inlet sides of the first and second high-capacity moisture removing apparatuses 20 and 22 and are controlled by the control unit.

The first humidity sensor 30 is installed on the outlet side of the first and second high capacity moisture removing devices 20 and 22 to measure the humidity of the moisture-removed gas. Based on the measured humidity data, it is possible to determine whether any one of the first and second high capacity moisture removing apparatuses 20, 22 currently in operation is normal.

The first pressure sensor 32 is provided on the outlet side of the first and second high-capacity moisture removing devices 20 and 22 to measure the pressure of the gas from which moisture has been removed. Based on the measured pressure data, it is possible to determine whether any one of the first and second high-capacity moisture removing apparatuses 20, 22 currently in operation is normal.

Both the first humidity sensor 30 and the first pressure sensor 32 may be installed, and only one of them may be installed and operated. The first humidity sensor 30 and the first pressure sensor 32 may be provided at the respective outlets of the first and second high capacity moisture removing devices 20 and 22 or may be provided at the front end of the extraction line 50 have.

In the specification and drawings of the present invention including FIG. 2, the symbols "? &Quot;, "? &Quot;, "? &Quot;

The extraction line 50 connects between the high-capacity moisture removing devices 20 and 22 and the standard moisture removing devices 70 and 72, and the length is usually about 10 to 80 m. The extraction line 50 flows at a temperature of about 40 to 60 DEG C while maintaining a high temperature of about 150 to 200 DEG C in order to prevent the condensation of water vapor. Maintaining the temperature of the range.

The temperature control device 55 surrounds the extraction line 55 in an adiabatic manner and includes an electric heater and a temperature sensor inside. The temperature control unit 55 controls the extraction line 55 to maintain a predetermined temperature in accordance with a control command of the control unit.

The measurement room 90 is located remotely from the chimney 10 and is commonly referred to as a Tele-Monitoring System (TMS). First and second standard moisture removal devices 70 and 72 and a plurality of NDIR measurement devices 92 are provided in the measurement room 90.

The first and second standard moisture removing apparatuses 70 and 72 are characterized in that the amount of gas is reduced and water is removed by a smaller amount than in the high-capacity water removing apparatus 70. The standard moisture removal device is a water removal device in which the sample dispensed by the high-capacity dispensing pump passes through the sample at a rate of about 1 to 3 L / min by the pump inside the NDIR measuring device. It is not a concept of moisture removal efficiency, Which means that a relatively small amount of moisture is removed relative to the device.

Since the first and second standard moisture removing apparatuses 70 and 72 are well-known structures, their detailed configurations and operation will be omitted. 2, the first and second standard moisture removing devices 70 and 72 are connected in parallel, one end is connected to the extraction line 50 and the other end discharge line 78 is connected to the NDIR measuring device 92, respectively. Also, as shown in Figs. 2 to 5, one standard moisture removing device provided after the high-capacity distribution pump may be provided, or a plurality of standard moisture removing devices may be provided according to the measuring device as shown in Fig.

A second bypass valve 74 and a second valve 76 are provided in parallel with the first and second standard moisture removal devices 70 and 72 and the second valve 76 is connected to a control command The second bypass 74 can be opened and closed. Although no member numbers are given, respective opening and closing valves are provided at the inlet sides of the first and second standard moisture removing apparatuses 70 and 72 and controlled by the control unit.

The second humidity sensor 80 is provided on the outlet side of the first and second standard moisture removal devices 70 and 72 to measure the humidity of the moisture-removed gas. Based on the measured humidity data, it is possible to determine whether any one of the first and second standard moisture removal devices 70 and 72 currently in operation is normal.

The second pressure sensor 82 is provided on the outlet side of the first and second standard moisture removal devices 70 and 72 to measure the pressure of the moisture-removed gas. Based on the measured pressure data, it is possible to determine whether any one of the first and second standard moisture removing apparatuses 70 and 72 currently operating is normal.

Both the second humidity sensor 80 and the second pressure sensor 82 may be installed, and only one of them may be installed and operated. The second humidity sensor 80 and the second pressure sensor 82 may be installed at the respective outlets of the first and second standard moisture removal devices 70 and 72 or may be installed at the discharge line 78. [

Example  Operation (normal operation)

Hereinafter, a normal operation of the present invention will be described with reference to the accompanying drawings. FIG. 6 is a flowchart illustrating a control method of a water removal apparatus for a failure according to the present invention, and FIG. 2 is a system configuration diagram illustrating a normal operation of the water removal apparatus for the failure shown in FIG. 6 and FIG. 2, the control unit includes a first sensor (a first humidity sensor 30, a first pressure sensor 32), a second sensor (a second humidity sensor 80, a second pressure sensor 32, (82) is within the normal range (S100).

If it is normal, the control unit recognizes that the entire system is operating in a normal state. Then, the first high-capacity moisture removing apparatus 20 is operated in a state where the first and second bypasses 24 and 74 are shut off (S110). At this time, the second high-capacity moisture removing device is a spare device used in case of failure of the first high-capacity moisture removing device, and can be used without problems even if the first high-moisture moisture removing device fails. That is, when the first high-capacity moisture removing apparatus 20 in which the "O" is indicated on the basis of FIG. 2 is in the operating state and the second high-moisture moisture removing apparatus 22 in which "Δ" When the high-capacity moisture removal device fails, the first high-capacity moisture removal device 20 stops operating, and the second high-capacity moisture removal device 22 indicated by "? &Quot; Through these switching operations, the first and second high-capacity moisture removing apparatuses 20 and 22 can use maintenance or design life. The control unit controls opening and closing of each valve on the inlet side for the operation of the first and second high-capacity moisture removing apparatuses 20, 22.

In addition, the controller operates the first standard moisture removal device 70 in a state where the first and second bypasses 24 and 74 are blocked (S110). At this time, the second standard moisture removing device is a spare device used in case of failure of the first standard moisture removing device, and can be used without any problem even if the first standard moisture removing device fails (S110). That is, when the first standard moisture removal device 70 indicated by "O" on the basis of FIG. 2 is in the operating state and the second standard moisture removal device 72 indicated by "Δ" is in the standby state, When the standard moisture removing device 70 fails, the first standard moisture removing device 70 stops operating, and the second standard moisture removing device 72 indicated by "? &Quot; Through this switching operation, the first and second standard moisture removal devices 70 and 72 can use maintenance or design life. The control unit controls opening and closing of each valve on the inlet side for the operation of the first and second standard moisture removing apparatuses 70 and 72.

Then, the temperature control unit 55 maintains the extraction line 50 at about 50 캜. The temperature of the extraction line 50 does not need to be as high as about 150 DEG C, and the temperature of the extraction line 50 does not need to be as high as about 50 DEG C, which corresponds to 1/3, because a substantial part of moisture is removed by the first or second high- The moisture condensation in the extraction line 50 can be sufficiently prevented even if the temperature is maintained.

As the process repeats, the entire system continues to operate in a steady state.

Example  Action (hazardous condition)

Hereinafter, the operation of the present invention will be described with reference to the accompanying drawings. For reference, the first high-capacity moisture removing device 20 and the first standard moisture removing device 70 are respectively provided with a second high-capacity moisture removing device 22 and a second standard moisture removing device 72). Therefore, the dangerous embodiment in which all of the moisture removing apparatuses 20, 22, 70, 72 fail at the same time may be limited, because repair measures of the failed system can be made while the preparatory apparatus is running.

FIG. 6 is a flowchart showing a control method of a water removal device for a failure according to the present invention, and FIG. 5 is a system configuration diagram illustrating a case where the water removal device for a failure shown in FIG. 1 operates in a dangerous state . 6 and 5, the control unit includes a first sensor (a first humidity sensor 30, a first pressure sensor 32), a second sensor (a second humidity sensor 80, a second pressure sensor 32, (Step S220). If the output signal of the second comparator 82 is out of the normal range (step S120).

That is, when the signals of the first and second humidity sensors 30 and 80 are excessively output, it is determined that the water removal function is failed, or even if the water is removed, the residual moisture is excessively large, do. If signals of the first and second pressure sensors 32 and 820 are excessively output, there is a risk of explosion or overload due to occlusion in a part of the process. If the pressure is too low, It is determined that there is almost no flow of the gas.

If the output signals of the first sensor (first humidity sensor 30, first pressure sensor 32) and the second sensor (second humidity sensor 80, second pressure sensor 82) are abnormal, The control unit stops the sampling system to protect the system. However, in order to stabilize the NDIR measuring device, the NDIR operates and controls the ambient air sample to enter the NDIR system by opening the atmospheric sample inlet valve (95) to prevent overloading of existing pumps in the NDIR. In order to prevent contamination of the NDIR system, a trap (99) consisting of silica gel and activated carbon is installed on the upstream side of the air sample inlet valve (95). Since the data measured in the dangerous state is not a measurement result of the actual chimney internal sample, It can be said that it is only a measure to prevent the overload of the NDIR measuring device

5, all of the moisture removing apparatuses 20, 22, 70 and 72 stop operating and are marked with "x ". In addition, the controller causes the operator or operator to solve the cause of the failure through a separate alarm.

Example  action( 1st Poor condition )

Hereinafter, a first operation of the present invention having the above-described configuration will be described with reference to the accompanying drawings. FIG. 6 is a flowchart showing a control method of a moisture removing apparatus for a failure according to the present invention, FIG. 3 is a flowchart illustrating a method of controlling a system for indicating a time when the moisture removing apparatus, .

6 and 3, the control unit includes a first sensor (a first humidity sensor 30, a first pressure sensor 32), a second sensor (a second humidity sensor 80, a second pressure sensor 32, (Step S240). If the output signals of the first sensor and the second sensor are not normal or both are abnormal, it is determined whether one of the first sensor and the second sensor is abnormal (S140).

If the output signal of the first sensor is abnormal and the output signal of the second sensor is normal, it is judged as the first bad state. That is, as shown in FIG. 3, the first and second high-moisture moisture removing apparatuses 20 and 22 are all in a failed state and the first and second standard moisture removing apparatuses 70 and 72 are in a normal state it means. If it is the first bad state, the control unit opens the first bypass 24 to prevent the first bypass high-moisture moisture removing apparatuses 20 and 22 from failing (S160).

In addition, the temperature control device 55 raises the temperature of the extraction line 50 to 150 to 200 ° C. This is to prevent condensation of water since the inflow gas 12 from which moisture has not been removed must pass through the extraction line 50 (S160). However, the high temperature and high humidity inflow gas passing through the first bypass 24 may be condensed in the extraction line during the time when the temperature of the extraction line 50 is raised to 150 to 200 ° C. Therefore, if the first and second high capacity moisture removing devices 20 and 22 fail, the inlet sample 12 is instantaneously shut off and the ambient sample inlet valve 95 is operated to switch the ambient atmosphere into the NDIR. When the temperature of the extraction line 50 is heated through the temperature control device 55 and the temperature of the extraction line 50 exceeds 120 ° C or 150 ° C or more, the air sample inlet valve 95 is shut off, 12 to the first bypass 26. The NDIR measurement value while the atmospheric sample inlet valve 95 is opened is not transmitted to the TMS system and the heating speed of the temperature control device 55 can be maximized to proceed in a short time.

Then, the control unit operates one of the first and second standard moisture removing apparatuses 70 and 72 (S160). (1 to 3 L / min) of the NDIR measuring instrument, the first and second standard moisture removing apparatuses 70 and 72 can sufficiently remove water And transmits it to the NDIR measuring device 92.

That is, even in the first bad state, analysis can be normally performed without stopping or analyzing errors of the system, and the cause of the trouble is solved by notifying the repairman or operator of the first bad state.

Through this process, the system operates normally even if the first bad state occurs.

Example  action( Second Poor condition )

Hereinafter, a second operation of the present invention will be described with reference to the accompanying drawings. FIG. 6 is a flowchart showing a control method of a moisture removing apparatus for a failure according to the present invention. FIG. 4 is a flowchart illustrating a method of controlling a moisture removing apparatus, .

6 and 4, the control unit includes a first sensor (a first humidity sensor 30, a first pressure sensor 32), a second sensor (a second humidity sensor 80, a second pressure sensor 32, (Step S240). If the output signals of the first sensor and the second sensor are not normal or both are abnormal, it is determined whether one of the first sensor and the second sensor is abnormal (S140).

If the output signal of the first sensor is normal and the output signal of the second sensor is abnormal, it is determined as the second bad state. That is, as shown in FIG. 4, the first and second high-moisture moisture removing apparatuses 20 and 22 are in a normal state, and the first and second standard moisture removing apparatuses 70 and 72 are in a state of failure it means. If it is the second bad state, the control unit opens the second bypass 74 to prevent the first and second standard moisture removing apparatuses 70 and 72 from failing (S150).

On the other hand, the temperature control device 55 maintains the temperature of about 50 캜 without raising the temperature of the extraction line 50. This is because moisture is sufficiently removed from the first and / or second high-capacity moisture removing devices 20 and 22, so that there is no possibility of moisture condensation even if the temperature is low.

Then, the control unit operates one of the first and second high-performance moisture removing apparatuses 20 and 22 (S160). Since the first and second high performance moisture removing devices 20 and 22 sufficiently remove water from the high-volume sample (5 to 10 L / min), even if only the high-capacity moisture removing device is used, (92).

That is, even in the second bad state, analysis can be normally performed without stopping or analyzing errors of the system, and the cause of the trouble is solved by notifying the repairman or operator of the second bad state.

Through this process, the system operates normally even if the second bad state occurs.

Although the present invention has been described in connection with the preferred embodiments set forth above, it will be readily appreciated by those skilled in the art that various other modifications and variations can be made without departing from the spirit and scope of the invention, It is obvious that all modifications are within the scope of the appended claims.

10: chimney,
12: Inflow gas,
15: inflow line,
20: a first high capacity moisture removing device,
22: Second high capacity moisture removing device,
24: first bypass,
26: first valve,
30: first humidity sensor,
32: first pressure sensor,
50: Extraction line,
55: Temperature control device,
70: first standard moisture removing device,
72: second standard moisture removing device,
74: second bypass,
76: second valve,
78: discharge line,
80: second humidity sensor,
82: second pressure sensor,
84: Measuring gas,
90: Measurement room,
92: NDIR measuring device,
95: Air sample inlet valve,
99: Trap.
100: Dispensing pump.

Claims (15)

A plurality of high capacity moisture removal devices located proximate a gas (12) entering from an exhaust pollutant source;
A plurality of standard moisture removing devices spaced apart from and connected to the high-capacity moisture removing device and having a relatively low water removing performance than the high-moisture moisture removing device;
An extraction line (50) connecting the high-capacity moisture removal device and the standard moisture removal device;
Determining means for determining whether or not the high-capacity moisture removing device and the standard moisture removing device are faulty; And
And a controller for selectively operating the plurality of high-capacity moisture removing apparatuses and the plurality of standard moisture removing apparatuses based on the determination result of the determining unit. The method according to claim 1,
The plurality of high-capacity moisture removing apparatuses
A first high capacity moisture removing device 20; And
And a second high-capacity moisture removing device (22) connected in parallel with the first high-capacity moisture removing device (20). 3. The method of claim 2,
A first bypass (24) connected in parallel with the first and second high capacity moisture removing devices (20, 22); And
Further comprising a first valve (26) for opening / closing the first bypass (24) by the control unit. The method according to claim 1,
Wherein the plurality of standard moisture removing apparatuses comprise:
A first standard moisture removal device 70; And
And a second standard moisture removing device (72) connected in parallel with the first standard moisture removing device (70). 5. The method of claim 4,
A second bypass 74 connected in parallel with the first and second standard moisture removal devices 70 and 72; And
Further comprising a second valve (76) for opening / closing the second bypass (74) by the control unit. The method according to claim 1,
Wherein the extraction line (55) is extended by 30 m or more. The method according to claim 1,
Wherein the extraction line (55) further comprises a temperature control device (55) capable of selectively maintaining a first temperature and a second temperature higher than the first temperature. . 8. The method of claim 7,
The first temperature is in the range of 40-60 < 0 > C,
Wherein the second temperature is in the range of 150 to 200 ° C. The method according to claim 1,
Characterized in that the judging means is at least one of a first humidity sensor (30) and a first pressure sensor (32) installed on a discharge line of the high capacity moisture removing device (20, 22) Lt; / RTI > The method according to claim 1,
Wherein the judging means is at least one of a second humidity sensor (80) and a second pressure sensor (82) provided in a discharge line (78) of the standard moisture removing device (70, 72) A device for controlling a water removal device. 11. A control method of a control apparatus according to any one of claims 1 to 10,
When both the first sensor provided on the discharge line of the first and second high capacity moisture removing devices 20 and 22 and the second sensor provided on the discharge line 78 of the first and second standard moisture removing devices 70 and 72 are normal (S100), the control unit operates one of the first and second high-capacity moisture removal units 20 and 22 and operates one of the first and second standard moisture removal units 70 and 72 (S110);
When the first sensor and the second sensor are both abnormal (S120), the control unit opens the first bypass (24) provided in parallel to the first and second high-capacity moisture removing apparatuses (20, 22) (S130) opening a second bypass (74) provided in parallel to the first and second standard moisture removal devices (70, 72);
When the first sensor operates normally and the second sensor operates abnormally at step S140, the control unit operates one of the first and second high-capacity moisture removing apparatuses 20 and 22, (S150); And
If the first sensor is operating abnormally and the second sensor is operating normally at step S140, the controller operates one of the first and second standard moisture removal devices 70 and 72, (S160) of raising the temperature of the extraction line (50) by opening the opening (24) of the extraction line (50). 12. The method of claim 11,
Wherein the extracting line (50) is maintained in a temperature range of 40 to 60 占 폚 in the alternating operation step (S110) and the step S150. 12. The method of claim 11,
Wherein the extracting line (50) is raised to a temperature in the range of 150 to 200 占 폚 in the ascending step (S160). 12. The method of claim 11,
Characterized in that the first sensor is at least one of a first humidity sensor (30) and a first pressure sensor (32) installed on discharge lines of the first and second high capacity moisture removing devices (20, 22) A method for controlling a water removal device. 12. The method of claim 11,
Wherein the second sensor is at least one of a second humidity sensor (80) and a second pressure sensor (82) installed on a discharge line (78) of the first and second standard moisture removal devices (70, 72) A method of controlling a water removal device against faults.

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