JP3617465B2 - Analytical device for atmospheric gas in snout and metal vapor removal device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to an atmospheric gas analyzer and a metal vapor removal device inside a snout provided in a molten metal plating tank.
[0002]
[Prior art]
As is well known, a hot dip galvanizing apparatus for continuously performing hot metal plating on a steel strip (in the following explanation, hot dip galvanization is used) is a heating for heating the steel strip to a temperature at which plating can be performed. A furnace, a snout for guiding the heated steel strip from the heating furnace to a hot dip galvanizing bath while maintaining a clean state, and a hot dip galvanizing bath for containing a hot dip galvanizing bath are provided.
[0003]
Inside the snout, a mixed gas of hydrogen and nitrogen is blown in order to keep the atmosphere clean. In addition, in order to keep the atmosphere inside the snout constant, the atmosphere gas inside the snout is analyzed using an atmosphere gas analyzer consisting of an oxygen meter, hydrogen meter, dew point meter, etc., and blown into the snout based on the analysis result. The composition of the mixed gas is appropriately controlled.
[0004]
By the way, since the zinc melting temperature in this hot dip galvanizing is about 419.5 ° C., zinc vapor is generated continuously and in large quantities from the plating bath surface. For this reason, zinc vapor is also contained in the atmospheric gas guided to the atmospheric gas analyzer.
[0005]
This zinc vapor is corrosive and adversely affects the analysis accuracy and life of the atmospheric gas analyzer. For this reason, maintenance of an atmospheric gas analyzer must be performed frequently, and the man-hour and cost which a maintenance requires increase. Therefore, it is necessary to remove zinc vapor from the atmospheric gas introduced to the atmospheric gas analyzer using an appropriate means.
[0006]
For this reason, generally zinc vapor was removed from atmospheric gas by filtering using a filter. It has also been known to remove zinc vapor from the atmospheric gas by solidifying the zinc vapor by temporarily cooling the atmospheric gas using a cooling device such as an electronic cooler.
[0007]
[Problems to be solved by the invention]
Filtration of zinc vapor using a filter is a well-known and commonly used removal means that has been improved in various ways. However, since zinc vapor is generated continuously and in large quantities, the filter is clogged early in a short time. In this case, it has been necessary to interrupt the operation of the atmospheric gas analyzer temporarily and perform clogging elimination by purging in the reverse direction at a considerable frequency. Further, in this case, it is necessary to finally replace the filter. Thus, the filtration of zinc vapor using a filter requires frequent maintenance of the filter, and it is difficult to operate the atmospheric gas analyzer stably for a long period of time.
[0008]
In addition, removal of zinc vapor using an electronic cooler requires (a) the equipment cost increases due to the complexity of the electronic cooler, (b) the difficulty in processing (recycling) the zinc powder after removal, ( c) Increased running costs such as electricity bills and maintenance costs, and (d) as with the case of using filters, the processing of zinc vapor and zinc powder generated continuously and in large quantities cannot keep up, and frequently There were problems such as the need for maintenance.
[0009]
For this reason, even with these conventional techniques, the atmospheric gas inside the molten metal plating tank cannot be analyzed smoothly and continuously on an industrial scale using an atmospheric gas analyzer.
[0010]
An object of the present invention is to provide an atmospheric gas analyzer and a metal vapor removal device inside a snout provided in a molten metal plating tank. For example, an atmospheric gas inside a snout using an atmospheric gas analyzer Provides an atmospheric gas analyzer and a metal vapor removal device inside a snout installed in a molten metal plating tank, which can analyze atmospheric gas at an industrial scale at a low cost, smoothly and continuously. It is to be.
[0011]
[Means for Solving the Problems]
As described above, since the zinc melting temperature in galvanizing is about 419.5 ° C., zinc vapor is generated continuously and in large quantities from the plating bath surface. Therefore, as a result of extensive studies, the present inventor removed the atmospheric gas from the atmospheric gas using the following means (i) to (iv), and thereby reduced the atmospheric gas on an industrial scale using an atmospheric gas analyzer. The inventor found that the analysis can be performed inexpensively, smoothly and continuously, and further studies were made to complete the present invention.
(i) The metal vapor contained in the atmospheric gas can be removed from the atmospheric gas by cooling and pulverizing (solidifying) the metal vapor contained in the atmospheric gas with a cooling device disposed above the plating bath.
(ii) Inside the cooling device, metal vapor supplied one after another comes into contact with the adhered powdered metal, so that the powdered metal can be grown greatly.
(iii) The mass of the metal powder that has grown and increased in weight can be peeled off from the adhesion surface by, for example, applying vibration to the adhesion surface and allowed to fall freely into the plating bath.
(iv) With this, it becomes possible to automatically return the lump of metal powder to the source (molten metal bath surface), and the processing (recycling) of the zinc powder after removal is not accompanied by an increase in man-hours. What can be achieved.
[0012]
The present invention relates to a cooling device having an atmosphere gas flow passage which is disposed above a plating bath accommodated in a molten metal plating tank and has an atmosphere gas flow passage for circulating the atmosphere gas inside the snout while being cooled, and an atmosphere gas Has a metal vapor removing device that is combined with an attached solidified material peeling device for separating the solidified metal vapor adhering to the inner surface of the atmospheric gas flow passage from the inner surface by being cooled by the cooling device. Furthermore, the present invention is a device for analyzing atmospheric gas in a snout, characterized by having a gas analyzer for analyzing the atmospheric gas from which the metal vapor has been removed by the metal vapor removing device.
[0013]
In the analysis apparatus for the atmospheric gas in the snout according to the present invention, the adhered solidified substance peeling device peels off the solidified substance by applying an external force to the solidified substance of the metal vapor adhered to the inner surface of the atmospheric gas flow passage. It is desirable.
[0014]
In these atmospheric gas analyzers in the snout according to the present invention, it is desirable that the attached solidified substance peeling device is a vibrator attached to the outer surface of the cooling device.
[0015]
From another point of view, the present invention has an atmosphere gas flow passage which is disposed above the plating bath accommodated in the molten metal plating tank and allows the atmosphere gas inside the snout to flow upward while cooling. A combination of a cooling device and an attached solidified material peeling device for separating the solidified metal vapor adhering to the inner surface of the atmospheric gas flow passage from the inner surface when the atmospheric gas is cooled by the cooling device; A first connecting member immersed in the plating bath is attached to the lower part of the atmospheric gas flow path, and the atmospheric gas from which the metal vapor has been removed is guided to the atmospheric gas analyzer at the upper part of the atmospheric gas flow path. A metal vapor removing device for atmospheric gas in a snout, wherein a second connecting member for mounting is attached.
[0016]
In this case, it is desirable that the first connecting member or the cooling device is provided with an atmospheric gas intake member for guiding the atmospheric gas inside the snout to the atmospheric gas flow passage.
[0017]
In the apparatus for removing the atmospheric gas in the snout according to the present invention, when the atmospheric gas inside the molten metal plating tank is further analyzed by the atmospheric gas analyzer, the atmospheric gas intake member, the first connecting member Atmosphere gas flow passage, second connection member and atmosphere gas analyzer in order, or atmosphere gas intake member, atmosphere gas flow passage, second connection member and atmosphere gas analyzer in order of circulation and adhesion solidification When the object peeling device is stopped and the atmospheric gas is not analyzed, it is desirable to provide a control device that does not circulate the atmospheric gas and controls the operation of the attached solidified material peeling device.
[0018]
In the metal vapor removal apparatus for atmospheric gas in the snout according to the present invention, the adhered solidified substance peeling device applies an external force to the solidified metal vapor adhered to the inner surface of the atmospheric gas flow passage, thereby removing the solidified substance. It is desirable to peel.
[0019]
In the metal vapor removing apparatus for the atmospheric gas in the snout according to the present invention, it is desirable that the attached solidified substance peeling device is a vibrator attached to the outer surface of the cooling device.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a device for analyzing atmospheric gas in a snout and a metal vapor removing device according to the present invention will be described below in detail with reference to the accompanying drawings. In the following description, a case where the molten metal plating is hot dip galvanizing is taken as an example.
[0021]
FIG. 1 is an explanatory diagram schematically showing a configuration example of an atmospheric gas metal vapor removing apparatus 1 in the snout according to the present embodiment. As shown in the figure, the metal vapor removing device 1 of the present embodiment includes a cooling device 2, an attached solidified material peeling device 3, a first connecting member 4, a second connecting member 5, and a take-in member. 6 and a control device 7, and the metal vapor removing device 1 and an atmospheric gas analyzer 18 to be described later constitute the atmospheric gas analyzing device in the snout according to the present embodiment. Then, these components of the metal vapor removal apparatus 1 of this Embodiment are demonstrated sequentially.
[0022]
[Cooling device 2]
The metal vapor removal apparatus 1 according to the present embodiment includes a cooling device 2. The cooling device 2 is disposed above the bath surface 8a of the plating bath 8 accommodated in the hot dip galvanizing tank and supported by appropriate support means (not shown). In the present embodiment, the cooling device 2 is configured by the cooling pipe 9. A cooling water passage (not shown) is embedded in the main body of the cooling pipe 9 in a spiral shape, for example, and a cooling water supply pipe 10a and a cooling water discharge pipe 10b are connected to the cooling water passage. The cooling water is supplied from the cooling water supply pipe 10a to the cooling water discharge pipe 10b through the cooling water flow path to cool the main body of the cooling pipe 9, that is, the atmospheric gas flow formed in the cooling pipe 9 The path 11 is configured to be indirectly water-cooled.
[0023]
In the present embodiment, since the cooling pipe 9 is arranged vertically upward, the atmospheric gas flow passage 11 is also arranged vertically upward. For this reason, as will be described later, when the solidified substance 12 of the zinc vapor adhering to the inner surface 11a of the atmospheric gas flow passage 11 is peeled off by the action of the attached solidified substance peeling device 3, the solidified substance 12 is directed vertically downward by its own weight. Free fall.
[0024]
Further, as will be described later, the atmospheric gas (sample gas) inside the snout circulates in the atmospheric gas flow passage 11 vertically upward. For this reason, this atmospheric gas flow passage 11 can distribute | circulate upwards, cooling atmospheric gas (sample gas).
The cooling device 2 of the present embodiment is configured as described above.
[0025]
[Adhesive solidified product peeling device 3]
The metal vapor removal apparatus 1 according to the present embodiment includes an attached solidified substance peeling apparatus 3. The attached solidified material peeling device 3 peels the metal vapor solidified material 12 adhering to the inner surface 11a of the atmospheric gas flow passage 11 from the inner surface 11a when the atmospheric gas (sample gas) is cooled by the cooling device 2. In the present embodiment, vibrators 3a and 3b attached to the outer surface 2a of the cooling device 2 are used as the adhered solidified product peeling device 3.
[0026]
These vibrators 3 a and 3 b are all air-type vibrators, and generate vibrations when air is supplied from an air supply pipe 14 connected to a compressed air supply source 13. A part of the air supply pipe 14 is equipped with an electromagnetic valve 15 that is actuated by a control signal S1 from the control device 7 described later, so that the operation of the vibrators 3a and 3b is controlled by the control device 7. ,It is configured.
[0027]
As described above, the adhered solidified material peeling apparatus 3 according to the present embodiment applies an external force to the zinc vapor solidified material 12 attached to the inner surface 11a of the atmospheric gas flow passage 11 using the vibration generated by the vibrators 3a and 3b. By doing so, the solidified product 12 is separated from the inner surface 11a of the atmospheric gas flow passage 11.
The adhered and solidified product peeling apparatus 3 according to the present embodiment is configured as described above.
[0028]
[First connecting member 4]
The metal vapor removal apparatus 1 according to the present embodiment includes a first connection member 4. In the present embodiment, a dip tube is used as the first connecting member 4. A flange 4 a is provided at the upper end of the dip tube 4, and the flange 4 a is fastened to a flange 9 a provided at the lower end of the cooling tube 9 by a fastening member (not shown). As a result, the dip tube 4 is connected in communication with the atmospheric gas flow passage 11. Further, the lower part of the dip tube 4 is immersed in the plating bath 8. A coating layer 4b made of a zinc-resistant bath material is formed on the outer surface of the portion immersed in the plating bath 8. Unlike the present embodiment, instead of using the dip tube 4 with the coating layer 4b formed on the outer surface, the dip tube 4 is made of, for example, SUS316L and is replaced when worn for a certain period of time. It is good to do. Thereby, it is possible to reduce the cost required for the dip tube 4 rather than using the dip tube 4 having the coating layer 4b formed on the outer surface.
[0029]
In the present embodiment, the dip tube 4 as an example of the first connecting member is arranged in communication with the atmospheric gas flow passage 11 as described above. However, unlike this, the dip tube 4 is communicated with the atmospheric gas flow passage 11. In addition, a solidified material storage tank that is not immersed in the plating bath 8 may be disposed, and the solidified material accumulated in the solidified material storage tank may be periodically removed.
[0030]
As described above, the solidified material 12 that has been peeled off from the inner surface 11 a of the atmospheric gas flow passage 11 by the action of the attached solidified material peeling device 3 and freely dropped vertically downward by its own weight passes through the atmospheric gas flow passage 11. Further, the inside of the dip tube 4 is freely dropped vertically downward and dropped into the plating bath 8.
The first connecting member 4 of the present embodiment is configured as described above.
[0031]
[Second connecting member 5]
The metal vapor removal apparatus 1 of the present embodiment has a second connecting member 5. In the present embodiment, the pipe 16 is used as the second connection member 5. One end of the pipe 16 is connected to the upper end of the cooling pipe 9 through a filter 17 for filtering zinc vapor contained in the atmospheric gas (sample gas). On the other hand, the other end of the pipe 16 is connected to the atmospheric gas analyzer 18.
[0032]
This atmospheric gas analyzer 18 is a well-known and commonly used atmospheric gas analyzer comprising an oxygen meter, a hydrogen meter, a dew point meter, etc., and displays the analysis result on the display unit 18a and also displays the analysis result in the snout atmospheric gas control device. (Not shown) to control the atmosphere in the snout.
[0033]
The atmosphere gas analyzer 18 is connected to one end of a discharge pipe 19 for discharging the collected atmosphere gas (sample gas). The other end of the discharge pipe 19 is connected to the exhaust pump 20. An electromagnetic valve 21 controlled by a control signal S2 from the control device 7 is attached to the discharge pipe 19.
[0034]
Thus, in the present embodiment, the second connection member 5 for guiding the atmospheric gas from which the metal vapor has been removed to the atmospheric gas analyzer 18 is mounted on the upper part of the atmospheric gas flow passage 11.
The second connecting member 5 of the present embodiment is configured as described above.
[0035]
[Intake member 6]
The metal vapor removal apparatus 1 according to the present embodiment has an intake member 6. This intake member 6 is a member that is welded to and attached to the first connecting member 4 and guides the atmospheric gas G inside the snout to the atmospheric gas flow passage 11. In this embodiment, the pipe 22 is used. It was.
[0036]
An electromagnetic valve 23 controlled by a control signal S3 from the control device 7 for the pipe 22 is mounted. Unlike the present embodiment, the solenoid valve 23 may not be used. Thereby, the number of parts of the metal vapor removal apparatus 1 can be further reduced.
The intake member 6 of the present embodiment is configured as described above.
[0037]
[Control device 7]
The metal vapor removal apparatus 1 of the present embodiment has a control device 7. This control device 7 outputs the control signals S1, S2, and S3 to the solenoid valves 15, 21, and 23, respectively, based on a preset program, thereby opening and closing the solenoid valves 15, 21, and 23, respectively. Control.
[0038]
That is, the control device 7 (a) when analyzing the atmospheric gas G inside the snout by the atmospheric gas analyzer 18, the open signals S2 and S3 are applied to the electromagnetic valves 21 and 23, and the closed signal S1 is applied to the electromagnetic valve 15. , The atmosphere gas G is circulated in the order of the atmosphere gas intake member 6, the first connection member 4, the atmosphere gas flow passage 11, the second connection member 5, and the atmosphere gas analyzer 18. When the peeling device 3 is stopped and (b) the atmosphere gas G is not analyzed, the close signal S2 and S3 are output to the solenoid valves 21 and 23 and the open signal S1 is output to the solenoid valve 15, respectively. And control to operate the adhered solidified product peeling device 3 is performed.
[0039]
As described above, the metal vapor removing apparatus 1 of the present embodiment includes the cooling device 2, the adhered solidified material peeling device 3, the first connecting member 4, the second connecting member 5, the intake member 6, And a control device 7. Next, operation | movement of the metal vapor removal apparatus 1 of this Embodiment is demonstrated.
[0040]
[Description of operation]
When the atmospheric gas analyzer 18 analyzes the atmospheric gas G inside the snout, the control device 7 sets the open signals S2 and S3 to the electromagnetic valves 21 and 23 and the closed signal S1 to the electromagnetic valve 15 according to a predetermined program. Are output respectively. Thereby, the atmosphere gas G of the plating surface 8a of the hot dip galvanizing bath 8 at about 400 to 500 ° C. is sucked through the pipe 22 and guided to the atmosphere gas flow passage 11 of the cooling pipe 9 through the dip pipe 4.
[0041]
Since the cooling pipe 9 is cooled by the cooling water, the atmospheric gas G guided to the atmospheric gas flow passage 11 is rapidly cooled at a cooling temperature difference of about 100 ° C. For this reason, the zinc vapor contained in the atmospheric gas G solidifies on the inner surface 11a of the atmospheric gas flow passage 11 as a solidified substance 12 of zinc vapor.
[0042]
At this time, since the zinc vapor is successively supplied to and contacted with the coagulated material 12 adhered to and solidified on the inner surface 11a, the coagulated material 12 grows greatly and changes from powder to lump. By repeating this, zinc vapor is reliably removed from the atmospheric gas G, and the atmospheric gas G is continuously cleaned.
[0043]
The atmospheric gas G from which the zinc vapor has been removed passes through the atmospheric gas flow passage 11 and the filter 17 and is then guided to the atmospheric gas analyzer 18 via the pipe 16. In this way, the atmosphere gas G is analyzed by the atmosphere gas analyzer 18.
[0044]
On the other hand, when the atmospheric gas analyzer 18 does not analyze the atmospheric gas G inside the snout, the control device 7 opens the closing signals S2 and S3 to the electromagnetic valves 21 and 23 and opens the electromagnetic valve 15 according to a predetermined program. Each of the signals S1 is output. Thereby, vibrator 3 starts and shakes off solidified substance 12 of zinc vapor which has adhered to inner surface 11a of atmospheric gas flow passage 11 and has grown in a lump shape.
[0045]
The solidified substance 12 of the zinc vapor that has been shaken down freely falls onto the zinc bath surface 8 a via the atmospheric gas flow passage 11 and the dip tube 4. Since the temperature of the zinc bath surface 8a is about 400 ° C., the fallen solidified substance 12 is dissolved and does not accumulate. Thus, according to the present embodiment, zinc vapor can be automatically recovered and processed without the need for manual labor.
[0046]
By performing this operation continuously for a certain period of time, after the solidified substance 12 adhering to the inner surface 11a of the atmospheric gas flow passage 11 is removed, the control device 7 controls the electromagnetic valves 21 and 23 according to a predetermined program. The open signals S2 and S3 and the close signal S1 are output to the solenoid valve 15, respectively. Thereby, the analysis of the atmospheric gas (sample gas) is resumed. Thereafter, such an operation is repeated.
[0047]
Thus, according to the metal vapor removal apparatus 1 of the present embodiment, the atmospheric gas G in the snout in the continuous galvanizing facility for the steel strip is cleaned and supplied to the atmospheric gas analyzer 18. The maintenance frequency of the analyzer 18 can be greatly increased compared to the conventional case, and the atmospheric gas analyzer 18 can be operated stably and can be analyzed with high accuracy. For this reason, improvement of the plating quality etc. of a steel strip is achieved.
[0048]
Further, according to the metal vapor removal apparatus 1 of the present embodiment, (a) zinc vapor generated in large amounts continuously can be automatically removed without human intervention, and (b) the removed zinc coagulum. Can be removed and collected automatically without staying for a long time, (c) the atmospheric gas G containing corrosive zinc vapor can remove the obstacles to the atmospheric gas analyzer 18, etc. (d) it is inexpensive and running The effect that the cost is almost not obtained.
[0049]
Furthermore, since the metal vapor removal apparatus 1 of the present embodiment is robustly configured with an extremely small number of parts, it can operate stably for a long period of time even if it is installed near a severe snout.
[0050]
Therefore, according to the present embodiment, when the atmospheric gas G inside the snout is analyzed using the atmospheric gas analyzer 18, the atmospheric gas G can be analyzed inexpensively, smoothly and continuously on an industrial scale. The zinc vapor removal apparatus 1 for the atmospheric gas G inside the snout could be provided.
[0051]
(Deformation)
In the description of the embodiment, the case where the molten metal plating is hot dip galvanization is taken as an example. However, the present invention is not limited to hot dip galvanization, and is similarly applied to hot dip metal plating other than hot dip galvanization.
[0052]
Moreover, in description of embodiment, the case where the cooling device 2 was arrange | positioned perpendicularly above the molten metal plating tank was taken as an example. However, this invention is not limited to this form, The cooling device 2 may exist in the position which remove | deviated from the vertical upper direction of the molten metal plating tank. In this case, the cooling pipe 3 constituting the cooling device 2, that is, the atmospheric gas flow passage 11 may be bent and arranged.
[0053]
Further, in the description of the embodiment, the case where the attached solidified substance peeling device 3 is the vibrators 3a and 3b attached to the outer surface of the cooling device 2 is taken as an example. However, the adhered solidified material peeling apparatus according to the present invention is not limited to the vibrators 3 a and 3 b, and the solidified metal vapor adhered to the inner surface 11 a of the atmospheric gas flow passage 11 is peeled from the inner surface 11 a of the atmospheric gas flow passage 11. Any device that can be applied is equally applicable. For example, the same action and effect can be obtained by appropriately arranging a scraper or the like that can scrape off the solidified metal vapor adhering to the inner surface 11a of the atmosphere gas flow passage 11 by hitting by an electric vibrator or an operator. Can be achieved.
[0054]
In the description of the embodiments and examples, the case where the intake member 6 is attached to the first connecting member 4 is taken as an example. However, the present invention is not limited to this form, and the intake member 6 may be connected to the cooling device 2, for example. In this case, when the atmospheric gas analyzer 18 analyzes the atmospheric gas G inside the snout, the control device 7 outputs an open signal to the electromagnetic valves 21 and 23 and outputs a closed signal to the electromagnetic valve 15. , The atmospheric gas intake member 6, the atmospheric gas flow passage 11, the second connecting member 5, and the atmospheric gas analyzer 18 are circulated in this order, and the attached solidified substance peeling device 3 is stopped, while the atmospheric gas analyzer When the atmospheric gas G inside the snout is not analyzed by 18, the closed signal is output to the electromagnetic valves 21 and 23, and the open signal is output to the electromagnetic valve 15. What is necessary is just to start the peeling apparatus 3. FIG.
[0055]
Furthermore, the adhered coagulated material peeling device 3 shown in the embodiment is merely an example of the present invention, and the present invention is arranged above the molten metal plating bath so that the atmospheric gas G inside the molten metal plating tank is generated. A cooling device 2 having an atmospheric gas flow passage 11 for flowing upward while cooling, and a solidified metal vapor adhering to the inner surface 11a of the atmospheric gas flow passage 11 by being cooled by the cooling device 2 If it is an apparatus provided with the adhesion solidified substance peeling apparatus 3 for making 12 peel, it is included by this invention.
[0056]
【The invention's effect】
As described above in detail, according to the present invention, when analyzing the atmospheric gas inside the snout using the atmospheric gas analyzer, the atmospheric gas can be analyzed inexpensively, smoothly and continuously on an industrial scale. It was possible to provide an apparatus for analyzing atmospheric gas and a device for removing zinc vapor inside a snout provided in a hot dip galvanizing tank.
The significance of the present invention having such an effect is extremely remarkable.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an explanatory view schematically showing a configuration example of a device for removing metal vapor from atmospheric gas in a snout according to an embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Metal vapor removal apparatus 2 Cooling device 3 Adhesive solidified substance peeling apparatus 8 Plating bath 11 Atmospheric gas flow passage 11a Inner surface 12 Metal vapor solidified substance

Claims (8)

A cooling device disposed above a plating bath accommodated in a molten metal plating tank and having an atmospheric gas flow passage for circulating the atmospheric gas inside the snout while cooling it, and the atmospheric gas is cooled Having a metal vapor removing device that is combined with an attached solidified substance peeling device for separating the solidified metal vapor adhering to the inner surface of the atmospheric gas flow passage from the inner surface by being cooled by the apparatus; And a gas analyzer for analyzing the atmospheric gas from which the metal vapor has been removed by the metal vapor removing apparatus. The apparatus for analyzing atmospheric gas in a snout according to claim 1, wherein the attached solidified substance peeling device peels off the solidified substance by applying an external force to the solidified substance of the metal vapor attached to the inner surface. The apparatus for analyzing an atmospheric gas in a snout according to claim 1 or 2, wherein the attached solidified substance peeling device is a vibrator attached to an outer surface of the cooling device. A cooling device that is disposed above the plating bath accommodated in the molten metal plating tank and has an atmospheric gas flow passage for circulating the atmospheric gas inside the snout while cooling it;
When the atmospheric gas is cooled by the cooling device, the solidified metal vapor adhering to the inner surface of the atmospheric gas flow path is combined with an attached solidified material peeling device for separating the solidified material from the inner surface,
A first connecting member immersed in the plating bath is attached to the lower part of the atmosphere gas flow passage, and the atmosphere gas from which the metal vapor has been removed is attached to the upper part of the atmosphere gas flow passage. A device for removing metal vapor from an atmospheric gas in a snout, wherein a second connecting member for guiding the gas analyzer is attached. The atmosphere gas in the snout according to claim 4, wherein the first connecting member or the cooling device is provided with an atmosphere gas intake member for guiding the atmosphere gas inside the snout to the atmosphere gas flow passage. Metal vapor removal equipment. Furthermore, when the atmospheric gas inside the snout is analyzed by the atmospheric gas analyzer, the atmospheric gas intake member, the first connection member, the atmospheric gas flow passage, the second connection member, and the atmosphere In order of the gas analyzer, or in the order of the atmosphere gas intake member, the atmosphere gas flow path, the second connection member and the atmosphere gas analyzer, and the attached solidified substance peeling device is stopped, The atmosphere gas in the snout according to claim 5, further comprising a control device that controls the operation of operating the attached solidified substance peeling device while not circulating the atmosphere gas when the atmosphere gas is not analyzed. Metal vapor removal equipment. The said attached solidified substance peeling apparatus was described in any one of Claim 4-6 which peels off this solidified substance by making an external force act on the solidified substance of the said metal vapor adhering to the said inner surface. Metal vapor removal device for atmospheric gas in the snout. 8. The apparatus for removing a metal vapor from an atmospheric gas in a snout according to claim 4, wherein the attached solidified substance peeling device is a vibrator attached to an outer surface of the cooling device. 9.

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