WO2013094628A1

WO2013094628A1 - Mist-containing gas analysis device

Info

Publication number: WO2013094628A1
Application number: PCT/JP2012/082882
Authority: WO
Inventors: 岡本　真一; 長安　弘貢; 勝千代丸; 達也辻内; 琢也平田; 田中　裕士
Original assignee: 三菱重工業株式会社
Priority date: 2011-12-21
Filing date: 2012-12-19
Publication date: 2013-06-27
Also published as: JP2013130444A

Abstract

A mist-containing gas analysis device is provided with: a collection container (116) in which a collection solution (2) is stored; a sampling tube (111), a guide tube (112), an introduction tube (114), and the like for sampling combustion exhaust gas (1); an electric heater (113) for heating the tubes (111, 112, 114) such that amines and the like sampled by the tubes (111, 112, 114) are vaporized; a feed tube (115) and the like for feeding the gas (1) sampled by the tubes (111, 112, 114) into the collection solution (2) in the collection container (116); a cleaning solution introduction tube (132) and the like for supplying a cleaning solution (3) to the tube (115) to thereby send, together with the cleaning solution (3), the amines and the like adhering to the tube (115) into the collection container (116) from the tube (115); and a measurement unit (130) for measuring the concentration of the amines and the like in the solutions (2, 3).

Description

Mist-containing gas analyzer

The present invention relates to a mist-containing gas analyzer for measuring the concentration of a substance to be measured in a target gas containing mist of the substance to be measured.

For example, in an exhaust gas treatment apparatus equipped with a carbon dioxide recovery device that contacts a combustion exhaust gas from a boiler or the like with an amine-containing absorption liquid and absorbs and recovers carbon dioxide in the combustion exhaust gas in the absorption liquid. Since trace amounts of amines and ammonia accompany the combustion exhaust gas from which carbon dioxide has been absorbed and removed by the carbon recovery device and are discharged to the outside together with the combustion exhaust gas, carbon dioxide is absorbed and removed by the carbon dioxide recovery device. The above-mentioned combustion exhaust gas is sampled by an operator, and the concentrations of amines and ammonia (hereinafter referred to as “amines etc.”) contained in the combustion exhaust gas are measured.

JP-A-62-106367 JP-A-62-119496 JP 2010-156592 A

However, as described above, if the worker samples the combustion exhaust gas and measures the concentration of amines, etc., the worker must sample and analyze every measurement, which is very laborious. It was.

Therefore, for example, by directly analyzing the combustion exhaust gas discharged by absorbing and removing carbon dioxide with a carbon dioxide recovery device by FT-IR or the like, the concentration of amines and the like contained in the combustion exhaust gas It is considered to measure.

However, when amines and the like in the combustion exhaust gas are measured in this way, the amines and the like that are in a gaseous state in the combustion exhaust gas can be measured, but the mist is in the combustion exhaust gas. The amines and the like cannot be measured, and the concentration of the amines and the like contained in the combustion exhaust gas cannot be accurately determined.

Such a problem is that an exhaust gas treatment device equipped with a carbon dioxide recovery device that makes combustion gas from a boiler or the like contact with an amine-containing absorption liquid and absorbs and recovers carbon dioxide in the combustion exhaust gas in the absorption liquid. Not only when measuring the concentration of amines and the like in the combustion exhaust gas at, but also when measuring the concentration of liquid components in the exit gas (for example, water saturated gas) of the gas-liquid contact device If the concentration of the substance to be measured in the target gas containing the substance mist is measured, it can occur in the same manner as described above.

In view of the above, an object of the present invention is to provide a mist-containing gas analyzer that can easily and accurately measure the concentration of a substance to be measured in a target gas containing a mist of the substance to be measured. .

The mist-containing gas analyzer according to the first invention for solving the above-described problem is a mist-containing gas analyzer that measures the concentration of the substance to be measured in the target gas containing the mist of the substance to be measured. A collection container in which a collection liquid for dissolving the substance to be measured is placed; a target gas sampling means for sampling the target gas; and the target substance sampled by the target gas sampling means is vaporized. Heating means for heating the target gas sampling means, and target gas feeding means for feeding the target gas sampled by the target gas sampling means into the collection liquid inside the collection container; The substance to be measured is attached to the target gas feeding means by supplying a cleaning liquid for dissolving the substance to be measured to the target gas feeding means. A cleaning liquid supply means for feeding the cleaning liquid together with the cleaning gas from the target gas supply means to the inside of the collection container, a liquid sorting means for sorting the liquid inside the collection container, and the liquid sorting means And measuring means for measuring the concentration of the substance to be measured in the liquid separated in step (b).

The mist-containing gas analyzer according to a second aspect of the present invention is the mist-containing gas analyzer according to the first aspect, wherein the target gas fed from the target gas feeding means into the collection liquid inside the collection container is finely divided. It is characterized by having a fine bubble forming means for forming bubbles.

The mist-containing gas analyzer according to a third aspect is characterized in that, in the second aspect, the microbubble generation means is a filter having a maximum pore in a range of 5 to 120 μm.

A mist-containing gas analyzer according to a fourth invention is characterized in that, in any one of the first to third inventions, the substance to be measured is an amine and ammonia.

A mist-containing gas analyzer according to a fifth invention is characterized in that, in the fourth invention, the heating means heats the target gas sampling means in a range of 150 to 200 ° C.

A mist-containing gas analyzer according to a sixth invention is characterized in that, in the fifth invention, the target gas is a combustion exhaust gas from which carbon dioxide has been absorbed and removed by an absorbing solution containing amines. .

The mist-containing gas analyzer according to a seventh invention is the mist-containing gas analyzer according to any one of the first to sixth inventions, wherein the target gas sampling means includes a sampling pipe for sampling the target gas, A temperature detecting means is provided on the tip side.

According to the mist-containing gas analyzer according to the present invention, the heating unit heats the target gas sampling unit so as to vaporize the substance to be measured sampled by the target gas sampling unit, and the clean liquid supply unit includes the clean liquid. Can be sent to the inside of the collection container from the target gas supply means together with the cleaning liquid. Even if the target gas is not only contained in the shape but also in the mist form, the concentration of the substance to be measured in the target gas can be measured easily and accurately.

It is a whole schematic block diagram of main embodiment of the mist containing gas analyzer which concerns on this invention. It is a block diagram of the control system of the mist containing gas analyzer of FIG.

Embodiments of a mist-containing gas analyzer according to the present invention will be described with reference to the drawings. However, the present invention is not limited only to the following embodiments described with reference to the drawings.

<Main embodiment>
A main embodiment of the mist-containing gas analyzer according to the present invention will be described with reference to FIGS.

As shown in FIG. 1, a flue gas 1 that is a target gas from which carbon dioxide has been absorbed and removed through contact with an absorbing solution containing amines circulates in the duct 10. In addition to gaseous substances, the substances to be measured and ammonia (hereinafter referred to as “amines”) are contained in a mist form.

A sampling tube 111 is attached to the circumferential surface of the duct 10 so that the tip side is positioned inside the duct 10. One end side of the guide tube 112 is connected to the proximal end side of the sampling tube 111 through the valve 101. Connected to the other end side of the guide tube 112 is one end side (upper end side) of the introduction tube 114 oriented so as to face the axial direction in the vertical direction. The sampling tube 111, the guide tube 112, and the introduction tube 114 are provided with an electric heater 113 serving as a heating means. The electric heater 113 passes through the inside of the

tubes

111, 112, 114 with the amines. Etc. can be heated at a temperature (about 150 to 200 ° C.) for vaporizing the like.

The other end side (lower end side) of the introduction pipe 114 is connected to one end side of the feed pipe 115 via the valve 102. The feed pipe 115 is attached to the collection container 116 so that the other end side is positioned below the inside of the collection container 116. A filter (maximum pore: 5 to 120 μm, particularly preferably 100 to 120 μm) 117 is attached to the other end side of the feeding pipe 115 as fine bubble forming means by sintering glass.

The collection container 116 is connected to one end side of a delivery pipe 118 having a valve 103 and a feed pump 119 in the middle thereof. The other end of the delivery pipe 118 is connected to the bottom of the liquid storage tank 120. Inside the liquid storage tank 120 is stored a collection liquid 2 for dissolving and collecting the amines and the like.

That is, when the valve 103 is opened and the feed pump 119 is operated, the collected liquid 2 in the liquid storage tank 120 can be supplied from the delivery pipe 118 into the collection container 116. It has become.

The base end side of the exhaust pipe 121 having the valve 104 and the suction blower 122 in the middle is connected to the upper part of the collection container 116. Between the valve 104 of the exhaust pipe 121 and the suction blower 122, a gas flow meter 123, which is a gas flow rate detecting means for detecting the flow rate of gas flowing through the exhaust pipe 121, is provided. A cooler 124 and a gas-liquid separator 125 are interposed between the valve 104 of the exhaust pipe 121 and the gas flow meter 123. A buffer tank 126 is interposed between the gas flow meter 123 of the exhaust pipe 121 and the suction blower 122.

The bottom of the collection container 116 is connected to one end of a liquid feeding pipe 127 having a valve 105 in the middle. The other end side of the liquid feeding pipe 127 is connected to a receiving port of the feeding pump 128. The delivery port of the feed pump 128 communicates with a reception port of a constant volume / dilution device 129 that performs constant volume and dilution. The outlet of the constant volume / dilution device 129 communicates with an inlet of a measuring device 130 which is a measuring means such as an ion exchange chromatography or an electric conductivity measuring device for measuring the concentration of the amines.

Between the valve 105 of the liquid feed pipe 127 and the feed pump 128, one end side of a drain pipe 131 having a valve 106 in the middle is connected. The other end side of the drainage pipe 131 communicates outside the system.

In the vicinity of the valve 102 on the other end side (lower end side) of the introduction pipe 114, one end side of a cleaning liquid introduction pipe 132 having a valve 107 in the middle is connected, and the cleaning liquid introduction pipe 132 has one end side. The axial direction is inclined and oriented so as to be positioned below the other end side. The other end of the cleaning liquid introduction pipe 132 communicates with a cleaning liquid tank (not shown) that supplies the cleaning liquid 3 such as pure water.

Near one end side (upper end side) of the introduction pipe 114 in the vicinity of the connection portion with the guide pipe 112, one end side of a nitrogen gas introduction pipe 133 having a valve 108 in the middle is connected. The nitrogen gas introduction pipe 133 is The axial direction is inclined and oriented so that one end side is positioned below the other end side. The other end side of the nitrogen gas introduction pipe 133 communicates with a nitrogen gas cylinder (not shown) that feeds nitrogen gas 4 that is an inert gas.

One end side of a bypass pipe 134 having a valve 109 in the middle is connected between a connection part of the introduction pipe 114 to the cleaning liquid introduction pipe 132 and a connection part to the nitrogen gas introduction pipe 133. The other end side of the bypass pipe 134 is connected between the valve 104 of the exhaust pipe 121 and the cooler 124.

The guide pipe 112 is connected to one end of a leak pipe 135 having a valve 110a in the middle. The other end of the leak pipe 135 communicates outside the system. One end of a leak pipe 136 having a valve 110b in the middle is connected to the upper portion of the collection container 116. The other end of the leak pipe 136 communicates outside the system.

A temperature sensor 141 serving as a temperature detecting means is provided on the distal end side of the sampling tube 111. In the collection container 116, a float type liquid quantity detector 142 is provided as a liquid quantity detection means for detecting the quantity of the collection liquid 2 in the collection container 116.

As shown in FIG. 2, the gas flow meter 123, the temperature sensor 141, and the liquid amount detector 142 are electrically connected to an input unit of a calculation control device 140 that is a calculation control means incorporating a timer. . The measuring device 130 is further electrically connected to the input unit of the arithmetic control device 140. The output unit of the arithmetic and control unit 140 includes the valves 101 to 109, 110a and 110b, the electric heater 113, the feed pumps 119 and 128, the suction blower 122, the constant volume / dilution device 129, and the measuring device 130. Are connected electrically to a monitor 143 which is a display means, and the arithmetic and control unit 140 includes the gas flow meter 123, the temperature sensor 141, the liquid amount detector 142, and the timer. Based on the information from the above, the operation of the valves 101 to 109, 110a, 110b, the electric heater 113, the feed pumps 119, 128, the suction blower 122, the constant volume / dilution device 129, and the measuring device 130 is performed. And controlling the operation of the constant volume / dilution device 129 based on information from the measuring device 130 and And it is capable of displaying various information on the monitor 143 (details will be described later).

In this embodiment, the

valves

101, 102, 104, the sampling pipe 111, the guide pipe 112, the introduction pipe 114, the supply pipe 115, the collection container 116, the exhaust pipe 121, The suction blower 122, the gas flow meter 123, the cooler 124, the gas-liquid separator 125, the buffer tank 126, and the like constitute a target gas sampling means, and the

valves

102 and 104, the introduction pipe 114, and the feed pipe. The supply pipe 115, the exhaust pipe 121, the suction blower 122, the gas flow meter 123, the cooler 124, the gas-liquid separator 125, the buffer tank 126, etc. constitute a target gas supply means, and the valve 107, the cleaning liquid supply pipe 132, the cleaning liquid tank, and the like constitute cleaning liquid supply means, and the valve 1 5. The liquid feeding pipe 127, the feeding pump 128, the constant volume / dilution device 129, and the like constitute liquid sorting means, and the valve 103, the feeding pipe 118, the feeding pump 119, the liquid storage The tank 120 or the like constitutes a collected liquid supply means, and the valve 106, the drainage pipe 131, or the like constitutes a liquid discharge means, and the valve 108, the nitrogen gas introduction pipe, the nitrogen gas cylinder, etc. The active gas supply means is configured, and the valve 109, the bypass pipe 134 and the like constitute bypass means.

Next, the operation of the mist-containing gas analyzer 100 according to this embodiment configured as described above will be described.

Initially, the valves 101 to 109 are all in a closed state, and when the arithmetic control device 140 is operated, the arithmetic control device 140 first determines the amine based on information from the temperature sensor 141. The operation of the electric heater 113 is controlled so that the

tubes

111, 112, 114 are heated at a temperature (about 150 to 200 ° C.) for vaporizing the like.

Subsequently, the arithmetic and control unit 140 opens and closes the

valves

103 and 110b based on the information from the liquid amount detector 142 so as to store a predetermined amount of the collected liquid 2 in the collection container 116. The collection liquid 2 in the storage tank 120 is discharged from the leak pipe 136 while the gas in the collection container 116 is discharged out of the system by controlling the operation and the operation of the feed pump 119. It is fed from 118 into the collection container 116.

When a specified amount of the collected liquid 2 is stored in the collection container 116, the control device 140, based on information from the liquid amount detector 142, the combustion exhaust gas that circulates in the duct 10. 1, the

valves

101 and 109 are controlled to be opened so that the inside of the sampling pipe 111 and the guide pipe 112 is purged, and the suction blower 122 is operated and controlled so that the combustion exhaust gas 1 in the duct 10 is The sample is taken into the sampling pipe 111 and discharged from the guide pipe 112 through the bypass pipe 134 and the exhaust pipe 121 to the outside of the system.

Thus, when the inside of the sampling pipe 111 and the guide pipe 112 is purged with the flue gas 1 for a predetermined time, the control device 140 removes the flue gas 1 based on the information from the timer. The valve 109 is controlled to be closed (the valve 101 is maintained in an open state) so as to come into contact with the collected liquid 2 in 116, and the

valves

102 and 104 are controlled to open, whereby the feeding pipe 115 is controlled. The combustion exhaust gas 1 is fed into the collection liquid 2 in the collection container 116 through the filter 117 and the amines and the like in the combustion exhaust gas 1 are dissolved in the collection liquid 2. On the other hand, the combustion exhaust gas 1 in which the amines and the like are collected is fed from the exhaust pipe 121 to the cooler 124 to be cooled, and moisture in the combustion exhaust gas 1 is removed. By condensation separated by the gas-liquid separator 125, and discharges the combustion exhaust gas 1 which is removing water from the gas flow meter 123 the suction blower 122 through the buffer tank 126 while the flow rates were measured by the outside of the system.

At this time, the

pipes

111, 112, 114 are heated and held up to a temperature (about 150 to 200 ° C.) for vaporizing the amines and the like by the electric heater 113, so that the combustion exhaust gas taken in from the duct 10 1 can be fed in a state of being vaporized up to the feed pipe 115 without condensing and adhering the gaseous and mist amines contained in 1 to the inner wall surface.

Further, since the flue gas 1 from the feed pipe 115 is fed into the collected liquid 2 via the filter 117, the flue gas 1 is made into fine bubbles and the collected liquid 2 is mixed with the collected liquid 2. The contact area can be increased, and the amines and the like in the combustion exhaust gas 1 can be efficiently collected.

When the combustion exhaust gas 1 having a prescribed integrated flow rate is circulated in the collected liquid 2 in the collection container 116 in this way, the arithmetic and control unit 140 is based on information from the gas flow meter 123. The

valve

101, 102, 104 is controlled to be closed so that the supply of the flue gas 1 into the collected liquid 2 is stopped, and the suction blower 122 is controlled to stop, and then the information from the timer The cleaning liquid 3 is fed from the cleaning liquid introduction pipe 132 into the introduction pipe 114 for a prescribed time (a prescribed amount) so that the introduction pipe 114 is filled with the cleaning liquid 3. 110a is controlled to open and close.

Next, the arithmetic and control unit 140 is configured to control the valve based on information from the timer so as to send the amines and the like adhering to the inner wall surface of the feed pipe 115 into the collection container 116. The opening / closing control of the 102, 108, 110b is performed at a prescribed timing, and the cleaning liquid 3 in the introduction pipe 114 is pushed out by the nitrogen gas 4 from the nitrogen gas introduction pipe 133, and the inside of the supply pipe 115 The cleaning liquid 3 is caused to flow down while being in contact with the inner wall surface of the feed pipe 115 so that the cleaning liquid 3 is brought into contact with all the amines and the like adhering to the wall surface. The combustion exhaust gas 1 is allowed to flow into the collection liquid 2 in the collection container 116 while being discharged out of the system from the leak pipe 136.

Thereby, all the amines and the like adhering to the inner wall surface of the feed pipe 115 can be collected in the collection container 116.

Subsequently, based on the information from the timer, the arithmetic and control unit 140 sorts the

liquids

2 and 3 in the collection container 116 into the constant volume / dilution unit 129. The opening / closing control of the

valves

102, 105, and 108 and the operation control of the feed pump 128 are performed at a prescribed timing, and the nitrogen gas 4 is supplied from the nitrogen gas introduction pipe 133 through the introduction pipe 114 and the feed pipe 115. While being supplied into the collection container 116, the

liquids

2 and 3 in the collection container 116 are mixed and fed from the liquid feed pipe 127 to the constant volume / dilution device 129 through the feed pump 128.

Then, the arithmetic and control unit 140 controls the operation of the constant volume / dilution unit 129 so as to send the mixed specified amount of the

liquids

2 and 3 to the measuring unit 130. When the measurement device 130 measures the concentration of the amines or the like in the

liquids

2 and 3 in a constant volume, the arithmetic control device 140 can calibrate the measurement result based on information from the measurement device 130. It is determined whether or not it is within the range, and if it is within the range that can be calibrated, the concentration of the amines and the like in the combustion exhaust gas 1 is calculated, and the result is displayed on the monitor 143.

On the other hand, when the measurement result of the measurement device 130 is outside the range that can be calibrated, the arithmetic and control unit 140 may determine the amines and the like in the

liquids

2 and 3 fed to the measurement device 130. The dilution rate is calculated so that the concentration is within the calibratable range, and the constant volume / dilution device 129 is controlled to dilute the

liquids

2 and 3 with a diluted solution such as pure water at the calculated magnification. When the constant volume / dilution device 129 dilutes the

liquids

2 and 3 at the calculated magnification, the arithmetic and control unit 140 again sends the diluted

liquids

2 and 3 to the measuring device 130 in a specified amount. The operation of the constant volume / dilution device 129 is controlled, and the measuring device 130 measures the concentration of the amines and the like in the

liquids

2 and 3 again. Then, the arithmetic and control unit 140 calculates the concentration of the amines and the like in the combustion exhaust gas 1 based on the information from the measuring device 130 and displays the result on the monitor 143.

When the concentration of amines and the like in the combustion exhaust gas 1 is obtained in this way, the arithmetic and control unit 140 removes the

liquids

2 and 3 in the collection container 116 based on information from the measuring unit 130. The

valves

102, 105, 106, and 108 are controlled so as to be discharged out of the system, and the nitrogen gas 4 is captured from the nitrogen gas introduction pipe 133 through the introduction pipe 114 and the supply pipe 115. All the

liquids

2 and 3 in the collection container 116 are discharged out of the system through the liquid supply pipe 127 and the drainage pipe 131 while being fed into the collection container 116.

When the

liquids

2 and 3 are discharged from the collection container 116 to the outside of the system in a specified time in this way, the arithmetic and control unit 140 determines that the inside of the collection container 116 is based on information from the timer. The

valve

105, 106, 108 is controlled to be closed so as to be filled with the cleaning liquid 3 (the valve 102 is kept open), and the

valves

107, 110b are controlled to open so that the cleaning liquid 3 is The cleaning liquid 3 is supplied from the cleaning liquid introduction pipe 132 through the feeding pipe 115 to the inside of the collection container 116 for a specified time, and the gas in the collection container 116 is expelled from the leak pipe 136 to the outside of the system. To the inside of the collection container 116 to such an extent that it overflows from the leak pipe 136.

In this way, when the cleaning liquid 3 is supplied to the inside of the collection container 116 for a specified time (a specified amount), the arithmetic and control unit 140, based on the information from the timer, The

valves

107 and 110b are controlled to be closed (the valve 102 is kept open) and the

valves

105, 106 and 108 are controlled to be opened so that the cleaning liquid 3 is discharged out of the system. Is fed from the nitrogen gas introduction pipe 133 to the inside of the collection container 116 through the introduction pipe 114 and the supply pipe 115, and all the cleaning liquid 3 in the collection container 116 is fed to the liquid. The liquid is discharged from the pipe 127 through the drain pipe 131.

In this way, when the cleaning liquid 3 is discharged from the collection container 116 to the outside of the system for a specified time, the arithmetic and control unit 140 cleans the filter 117 based on the information from the timer. In addition, the valve 108 is controlled to be closed (the

valves

102, 105, and 106 are kept open), the valve 107 is controlled to be opened, and the cleaning liquid 3 is supplied from the cleaning liquid introduction pipe 132 to the feeding pipe 115. Then, the filter 117 is supplied to the filter 117 for a specified time to clean the filter 117, and the cleaning liquid 3 is discharged from the liquid supply pipe 127 to the outside of the system through the drainage pipe 131.

When such cleaning with the cleaning liquid 3 is performed for a specified time, the arithmetic and control unit 140 controls the

valves

102, 105, 106, and 107 to be in an initial state based on information from the timer. return.

Hereinafter, by repeating the above-described operation, the concentration of the amines and the like in the combustion exhaust gas 1 flowing through the duct 10 can be automatically and continuously measured.

Therefore, according to the mist-containing gas analyzer 100 according to the present embodiment, even if the exhaust gas 1 contains not only amines and the like but also mist, The concentration of the amines in 1 can be measured easily and accurately.

<Other embodiments>
In the embodiment described above, a carbon dioxide recovery device is provided in which combustion exhaust gas from a boiler or the like is brought into contact with an amine-containing absorption liquid and carbon dioxide in the combustion exhaust gas is absorbed and recovered in the absorption liquid. Although the case where the density | concentration of the said amines in the said combustion exhaust gas 1 in the said waste gas treatment apparatus was measured was demonstrated, this invention is not restricted to this, For example, in the exit gas (for example, moisture saturation gas) of a gas-liquid contact apparatus As in the case of measuring the concentration of the substance to be measured in the target gas containing the mist of the substance to be measured, such as when measuring the liquid component concentration, the same as in the case of the above-described embodiment. Can be applied.

The mist-containing gas analyzer according to the present invention not only contains the substance to be measured in a gaseous state, but also the concentration of the substance to be measured in the target gas, even if it is a target gas that also contains the mist. Can be measured easily and accurately, and can be used extremely beneficially in various industries.

DESCRIPTION OF SYMBOLS 1 Combustion exhaust gas 2 Collected liquid 3 Cleaning liquid 4 Nitrogen gas 10 Duct 100 Mist containing gas analyzer 101-109, 110a, 110b Valve 111 Sampling pipe 112 Guide pipe 113 Electric heating heater 114 Introduction pipe 115 Feed pipe 116 Collection container 117 Filter 118 Delivery pipe 119 Feed pump 120 Storage tank 121 Exhaust pipe 122 Suction blower 123 Gas flow meter 124 Cooler 125 Gas-liquid separator 126 Buffer tank 127 Feed pipe 128 Feed pump 129 Constant volume / dilution device 130 Measuring device 131 Drainage pipe 132 Clean liquid introduction pipe 133 Nitrogen gas introduction pipe 134

Bypass pipe

135, 136 Leak pipe 140 Arithmetic controller 141 Temperature sensor 142 Liquid quantity detector 143 Monitor

Claims

A mist-containing gas analyzer for measuring the concentration of a substance to be measured in a target gas containing a mist of the substance to be measured,
A collection container into which a collection solution for dissolving the substance to be measured can be placed;
A target gas sampling means for sampling the target gas;
Heating means for heating the target gas sampling means so as to vaporize the substance to be measured sampled by the target gas sampling means;
Target gas feeding means for feeding the target gas sampled by the target gas sampling means into the collected liquid inside the collection container;
A cleaning liquid for dissolving the substance to be measured is supplied to the target gas feeding means, and the substance to be measured attached to the target gas feeding means is collected from the target gas feeding means together with the cleaning liquid. Cleaning liquid supply means for feeding into the container;
A liquid fractionating means for fractionating the liquid inside the collection container;
A mist-containing gas analyzer comprising: a measuring unit that measures the concentration of the substance to be measured in the liquid sorted by the liquid sorting unit.
The mist-containing gas analyzer according to claim 1,
A mist-containing gas analyzer characterized by comprising microbubble generation means for microbubbles the target gas fed from the target gas feeding means into the collection liquid inside the collection container. .
The mist-containing gas analyzer according to claim 2,
The mist-containing gas analyzer, wherein the microbubble generation means is a filter having a maximum pore in the range of 5 to 120 μm.
In the mist containing gas analyzer according to any one of claims 1 to 3,
The mist-containing gas analyzer, wherein the substances to be measured are amines and ammonia.
The mist-containing gas analyzer according to claim 4,
The mist-containing gas analyzer characterized in that the heating means heats the target gas sampling means in the range of 150 to 200 ° C.
In the mist containing gas analyzer of Claim 5,
The mist-containing gas analyzer, wherein the target gas is a combustion exhaust gas from which carbon dioxide has been absorbed and removed by an absorbing solution containing amines.
In the mist containing gas analyzer according to any one of claims 1 to 6,
The mist-containing gas analyzing apparatus, wherein the target gas sampling means includes a sampling pipe for sampling the target gas, and a temperature detecting means is provided on a tip side of the sampling pipe.