JP2003220312A - Trap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a trap capable of surely removing the portion to be removed of a liquid material or the like. <P>SOLUTION: The trap 13 is arranged with a screw-shaped baffle plate 20 in the inside of a trap main body 14 making gas flow down so as to provide a swirl force to the gas, the baffle plate 20 is installed with a falling hole 21 for making the removed portion of the gas separated by the swirl force fall downward by gravity. Thus, since the centrifugal force is given to the removed portion by the swirl force of the gas, the removed portion is separated and is surely eliminated. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a trap for removing oil and water from a sample gas.

[0002]

2. Description of the Related Art Generally, a boiler or the like appropriately measures the oxygen concentration in the gas so as to prevent ignition. To measure the oxygen concentration, a sample gas is analyzed by an analyzer of an oxygen concentration meter as shown in FIG. The sample gas introducing line 2 is used so that the gas can be introduced into

The sample gas introduction line 2 includes a mixer 3 for introducing solid contents such as waste paper and an organic solvent, a cooler 4 having a cooling function, and a heat trace for connecting the mixer 3 to the analyzer 1 via the cooler 4. The pipe 5 is provided.

Analyzer gas for sample gas from boiler etc. 1
When it is supplied to the mixer 3, the solid content and the organic solvent charged in the mixer 3 are agitated at a temperature of about 40 ° C. to about 80 ° C. to collect the sample gas above the inside of the mixer 3, and the pipe 5 cools the sample to the cooler 4. By supplying and cooling the gas, oil and water in the sample gas are condensed and removed, and the sample gas is supplied to the analyzer 1 in a state that does not affect the measurement.

Here, the pipe 5 for supplying the gas from the mixer 3 to the analyzer 1 is kept at a certain temperature or higher by heat tracing so that oil and water will not accumulate in the pipe.

[0006]

However, since the sample gas obtained from the mixer 3 contains liquid substances such as liquid oil and moisture as well as vaporized substances such as vaporized oil and moisture, the cooler 4 When removing the vaporized substance, the liquid substance is also removed at the same time, and there is a problem that the condensation efficiency of the vaporized substance in the cooler 4 is significantly reduced. Therefore, in order to remove the liquid substance before introducing the sample gas into the cooler 4, a trap for separating the liquid substance between the mixer 3 and the cooler 4 as shown in FIG. 6 was considered, but the liquid material could not be removed sufficiently. Here, in FIG. 6, 7 is a trap body, 8 is a gas inlet, 9 is a gas outlet, 10 is a first exhaust valve, and 11 is a second exhaust valve.

An object of the present invention is to provide a trap which can surely remove a removed amount of a liquid substance or the like.

[0008]

According to a first aspect of the present invention, a trap is provided inside a trap body for letting gas flow down, and a baffle plate spirally provided in the gas flow direction is arranged. ,

A second aspect of the present invention is a trap in which a spiral baffle plate is disposed inside a trap body for letting gas flow down so as to give a swirling force to the gas.
A trap having a drop hole for dropping the removed portion separated by the turning force by its own weight,
It depends on.

A third aspect of the present invention relates to the trap according to the second aspect, wherein the baffle plate is inclined downward toward the drop hole.

A fourth aspect of the present invention relates to the trap according to the first aspect, wherein the gas is introduced from the upper portion of the trap body and discharged from the lower portion of the trap body.

A fifth aspect of the present invention relates to the trap according to the first, second or third aspect, wherein the gas is introduced from the lower portion of the trap body and discharged from the upper portion of the trap body.

A sixth aspect of the present invention relates to the trap according to the second, third, fourth or fifth aspect in which the drop hole is formed at the spiral center of the baffle plate.

As described above, when the gas is supplied to the trap body, the spiral baffle plate swirls the gas to give a centrifugal force to the removed portion, so that the removed portion can be separated and reliably removed. it can.

According to the second aspect, the removed amount separated by the turning force is dropped downward from the drop hole by its own weight.
The removed material can be accumulated downward and easily and more reliably removed.

When the baffle plate is inclined downward toward the drop hole as described in claim 3, the removed portion on the baffle plate is moved to the drop hole by its own weight, so that the drop of the removed portion can be promoted. .

When the gas is introduced from the upper part of the trap body and discharged from the lower part of the trap body as described in claim 4, the separated flow is pressed downward from above by the flow of gas. Therefore, it is possible to prevent the removed portion from being rolled up.

When the gas is introduced from the lower part of the trap body and discharged from the upper part of the trap body as described in claim 5, the gas flows from the lower part to the upper part.
Since the separated removed portion is attached to the lower surface of the baffle plate, the removed portion can be easily dropped.

When the drop hole is formed at the spiral center of the baffle plate as described in claim 6, the removed portion is dropped from the spiral center where the flow of the sample gas is weak. Therefore, the influence of the sample gas on the dropped removed portion is reduced. , The removed portion can be surely dropped.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show a first example of a mode for carrying out the trap of the present invention. In the drawings, the parts designated by the same reference numerals as those in FIGS. 5 and 6 represent the same parts.

A trap 13 of the first example is disposed between the mixer 3 and the cooler 4 in the sample gas introduction line 12 via a pipe 5, and the trap 13 of the first example is a closed cylindrical trap body. The trap body 14 is provided with a conical accumulating portion 15 having a diameter that decreases downward at the lower portion of the trap body 14, and the first discharge valve 16 is provided at the lower end of the accumulating portion 15.
And a second discharge valve 17 located downstream of the first discharge valve 16. A gas inlet 18 is provided in the upper portion of the trap body 14 and a gas outlet 19 is provided in the lower portion thereof, which are connected to the pipes 5, respectively.

Inside the trap body 14, a spiral baffle plate 20 extending from an upper gas inlet 18 to a lower gas outlet 19 is arranged, and the baffle plate 20 is the trap body 14. One drop hole 21 is provided in the center of the trap body 14 and is located substantially coaxially with
An inclination angle is formed so as to be directed downward from the to the drop hole 21.

The operation of the first example of the embodiment of the present invention will be described below.

When the sample gas is supplied to the trap 13 of the first example so that the sample gas can be introduced into the analyzer 1 from the mixer 3, the sample gas flows from the upper gas introduction port 18 to the lower gas discharge port 19. The spiral baffle plate 20 swirls down while flowing down, imparts centrifugal force to the liquid substance and vaporized substance of oil and water, and separates most of the liquid substance (removed portion) to adhere to the surface of the baffle plate 20. Let Here, a part (removed portion) of the vaporized substance is liquefied by the change in the flow velocity and the pressure due to the inflow into the trap body 14, and is separated in substantially the same manner as the liquid substance and adheres to the surface of the baffle plate 20.

The removed portion adhered to the baffle plate 20 is removed by the baffle plate 2.
With the inclination of 0, it flows down to the center, falls from the drop hole 21, accumulates in the accumulating portion 15, and is appropriately discharged through the first discharge valve 16 and the second discharge valve 17. Further, when the solid content (removed content) flows into the trap body 14, it is similarly separated by the centrifugal force and accumulated in the accumulating portion 15.

On the other hand, the sample gas from which the removed portion has been separated is discharged from the gas discharge port 19 to thereby cooler 4.
Is supplied to the analyzer 1 via the.

Thus, the baffle plate 20 of the trap 13
Causes the sample gas to swirl to give a centrifugal force to the removed components such as oil and water, so that the removed components can be separated and reliably removed. Further, since the sample gas does not contain a liquid substance after passing through the trap 13, the cooler 4
It is possible to improve the condensation efficiency of the cooler 4 without applying a load to the cooler 4. Furthermore, since the removed portion separated by the turning force is dropped downward from the drop hole 21 by its own weight,
The removed portion can be stored in the lower storage portion 15 and removed easily and more reliably.

When the baffle plate 20 is inclined downward toward the drop hole 21, the removed portion adhering to the baffle plate 20 is moved to the drop hole 21 by its own weight, so that the fall of the removed portion can be promoted.

When the sample gas is introduced from the upper part of the trap body 14 and discharged from the lower part of the trap body 14, the flow of the sample gas presses the separated removed portion from the upper side to the lower side. It is possible to prevent the minute from being rolled up. Further, even a substance having a low viscosity that easily rolls up can be reliably prevented from rolling up.

When the drop hole 21 is formed in the spiral center of the baffle plate 20, the removed portion is dropped from the spiral center where the flow of the sample gas is weak. Therefore, the influence of the sample gas on the dropped removed portion is reduced and the removed portion is secured. Can be dropped into. Moreover, since the spiral baffle plate 20 can be formed in a simple shape, the manufacturing cost can be reduced.

FIG. 4 is a second example of the embodiment of the trap of the present invention, in which the shape of the baffle plate 20 of the first example is modified.

A trap 22 of the second example is arranged via a pipe 5 between the mixer 3 and the cooler 4 in the sample gas introduction line 12, and the trap 22 of the second example is a closed cylindrical trap body. The trap body 23 is provided with a conical accumulating portion 24 having a diameter that decreases downward at the lower part of the trap body 23.
And a second discharge valve 26 located downstream of the first discharge valve 25. A gas inlet 27 is provided at the bottom of the trap body 23, and a gas outlet 28 is provided at the top of the trap body 23 for connection to the pipes 5, respectively.

Inside the trap body 23, there is arranged a spiral baffle plate 29 extending from the lower gas inlet 27 to the upper gas outlet 28. The baffle plate 29 is a trap body 23. One drop hole 30 is provided in the center of the trap body 23 and is located substantially coaxially with
An inclination angle is formed so as to extend downward from the to the drop hole 30.

The operation of the second example of the embodiment of the present invention will be described below.

When the sample gas is supplied to the trap 22 of the second example so that the sample gas can be introduced into the analyzer 1 from the mixer 3, the sample gas flows from the lower gas introduction port 27 to the upper gas discharge port 28. The spiral baffle plate 29 swirls down while flowing down, imparts a centrifugal force to the liquid substance and vaporized substance of oil and water, and separates most of the liquid substance (removed portion) in substantially the same manner as in the first example. It is attached to the surface of the baffle plate 29.

Therefore, the operation of the second example of the embodiment of the present invention can obtain the same operation as that of the first example.

If the sample gas is introduced from the lower part of the trap body 23 and discharged from the upper part of the trap body 23, the separated removed portion is separated from the baffle plate 29 by the flow of the sample gas from the lower part to the upper part. Since it is attached to the lower surface, it is possible to easily drop the removed portion.

The trap of the present invention is not limited to the above-described embodiment, but may be used for other purposes than the sample gas introduction line, and the drop hole may be provided at another position. It goes without saying that various modifications may be made without departing from the scope of the present invention.

[0040]

According to the trap of the present invention, various excellent effects as described below can be obtained.

I) When the gas is supplied to the trap body, the spiral baffle plate swirls the gas to give a centrifugal force to the removed portion, so that the removed portion can be separated and reliably removed.

II) According to the second aspect, since the removed portion separated by the turning force is dropped downward from the drop hole by its own weight, the removed portion can be accumulated below and removed easily and more reliably. .

III) As claimed in claim 3, when the baffle plate is inclined downward toward the drop hole, the removed portion on the baffle plate is moved to the drop hole by its own weight, so that the removed portion falls from the drop hole. Can be promoted.

IV) When the gas is introduced from the upper portion of the trap body and discharged from the lower portion of the trap body as described in claim 4, the separated removed portion is moved downward from above by the flow of gas. Since it is pressed down, it is possible to prevent the removed portion from being rolled up.

V) When the gas is introduced from the lower part of the trap body and discharged from the upper part of the trap body as described in claim 5, the separated removed portion is obstructed by the gas flow from the lower side to the upper side. Since it adheres to the lower surface of the plate, it is possible to easily drop the removed portion.

VI) When the drop hole is formed at the spiral center of the baffle plate as described in claim 6, the removed portion is dropped from the spiral center where the flow of the sample gas is weak. Therefore, the influence of the sample gas on the dropped removed portion is affected. The amount can be reduced and the removed portion can be surely dropped.

[Brief description of drawings]

FIG. 1 is a system diagram showing a configuration example of a sample gas introduction line provided with a trap of the present invention.

FIG. 2 is a sectional view showing a first example of the form of the trap of the present invention.

3 is a view in the direction of arrow III-III in FIG.

FIG. 4 is a sectional view showing a second example of the form of the trap of the present invention.

FIG. 5 is a system diagram showing a configuration example of a conventional sample gas introduction line.

FIG. 6 is a cross-sectional view showing a trap provided in a conventional sample gas introduction line.

[Explanation of symbols]

13 traps 14 Trap body 20 baffle 21 Fall hole 22 traps 23 Trap body 29 Baffles 30 drop holes

Claims (6)

[Claims] 1. A trap characterized in that a baffle plate spirally provided in a gas flow direction is arranged inside a trap body through which a gas flows. 2. A trap in which a spiral baffle plate is arranged to give a swirling force to the gas inside a trap body for letting the gas flow down, wherein the baffle plate has its own weight of the removed portion separated by the swirling force. A trap having a drop hole so that the trap can be dropped downward. 3. The trap according to claim 2, wherein the baffle plate is inclined downward toward the drop hole. 4. The trap according to claim 1, wherein the gas is introduced from the upper portion of the trap body and discharged from the lower portion of the trap body. 5. The trap according to claim 1, wherein the gas is introduced from the lower part of the trap body and discharged from the upper part of the trap body. 6. The trap according to claim 2, wherein the drop hole is formed at the center of the spiral of the baffle plate.