JPH0119928B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a gas treatment device, and particularly to a gas treatment device that can be used as a dust collector or reactor to reduce its size and improve dust collection efficiency and reaction efficiency. Regarding the structure of

[Conventional technology]

Conventionally, gas treatment apparatuses equipped with packed beds as dust collectors and reactors have been widely used. The packed bed is
When the gas treatment equipment is used as a dust collector, it is filled with sand or steel balls, and when the gas treatment equipment is used as a reactor, for example, when it is used for carbonization of coal, it is filled with coal. Ru. The packed material thus filled is continuously supplied into the packed bed from the upper part, and the supplied amount is discharged from the lower part to be regenerated and replaced continuously.

Hereinafter, the case where it is used as a dust collector will be explained as an example. In a conventional precipitator equipped with a packed bed, a packed bed 5 is disposed concentrically with the cylindrical body 2 as shown in FIG. After passing from the outside to the inside, it was collected at the center of the cylinder 2 and exited from the outlet 6.

In a dust collector with such a structure, in order to increase the contact time between the filling material and the gas and improve the dust collection efficiency, it is necessary to increase the thickness of the filling layer 5 or to slow down the gas flow rate. The diameter of the cylindrical body 2 was increased.

[Problem to be solved by the invention]

However, by either increasing the thickness of the packed bed 5 or increasing the diameter of the cylindrical body 2, the dust collection efficiency of the dust collector can be increased, or the reaction efficiency of the reactor can be increased. In conventional means, the dust collector and reactor become large, and those used under high pressure and high vacuum have problems in terms of strength, and the wall thickness of the cylindrical body 2 becomes thick, which is not only uneconomical. There is a problem in that there is a limit to increasing the diameter of the cylindrical body 2 to slow down the gas flow rate and improve dust collection efficiency and reaction efficiency.

In addition, it is difficult to increase the size of the cylindrical body 2 relative to the increase in the amount of filling material, and the flow rate is not very slow, so the contact time between the gas and the filling material is relatively short, which improves dust collection efficiency and reaction efficiency. The problem was that it was difficult to improve.

[Purpose of the invention]

The present invention was made to solve the above-mentioned problems, and it is possible to reduce the size, solve the problem of strength under high pressure and high vacuum, and improve dust collection efficiency and reaction efficiency as a dust collector or reactor. It is an object of the present invention to provide a gas treatment device that can expand the limits of improvement.

[Means to solve the problem]

In order to solve the above problems, the gas treatment device of the present invention includes a cylindrical partition wall arranged concentrically in the center of a cylindrical body, and a plurality of packed layers in an annular space between the cylindrical body and the partition wall. are arranged in a radial manner, and the portions separated by the packed bed are alternately used as a gas inlet part and a gas outlet part, and the inside of the partition wall is used as a transport path for the filling in the packed bed or a gas flow path. , which is characterized in that it communicates with the packed bed or the gas outlet.

[Effect]

In the gas treatment device of the present invention configured as described above, the packed beds are arranged radially in the annular space inside the cylindrical body, so installation conditions are strict when handling high-pressure and high-temperature gas, and compact dust collection is possible. Even if a vessel or reactor is required, the volume of the packed bed can be large, and the gas can flow while filling the cylinder, so the flow rate of the gas is low, and the gas and the inside of the packed bed are It is possible to realize a dust collector or reactor in which the contact time with the filler is extended, and dust collection or reaction efficiency can be improved.

Further, in the gas treatment device of the present invention, the inside of the cylindrical partition wall arranged concentrically at the center of the cylindrical body serves as a transport path for the filling in the packed bed or a gas flow path, and communicates with the packed bed or the gas outlet port. Because of this, it is possible to make the packing transport mechanism more compact or the gas flow path more compact, making it possible to make dust collectors and reactors even more compact, as well as providing strength under high pressure and high vacuum conditions. The above problem can also be solved, and the limits for improving dust collection or reaction efficiency can be greatly expanded.

[Example] An example of the gas treatment apparatus of the present invention will be described in the case of a dust collector.

1 and 2 are cross-sectional views of a dust collector equipped with a packed bed. In the figures, a cylindrical partition wall 3 is provided concentrically at the center of a cylindrical body 2.
In the annular space between the partition wall 3 and the partition wall 3, there are a plurality of
16 filling layers 5 are arranged radially, and the filling layers 5
Gas inlet portions 12,
It serves as a gas outlet section 13.

The filling layer 5 is formed by filling gaps between air-permeable members 13, such as steel balls, with sand grains, steel balls, or the like.

In FIG. 1, the inside of the partition wall 3 is used as a conveyance path for the filling material of the filling layer 5.
is a conveyor, such as an elevator. In FIG. 2, the inside of the partition wall 3 is used as a gas flow path 4, and the partition wall 3 has a vent hole 14 only at the gas outlet portion 11. As shown in FIG.

Figure 3 is a longitudinal sectional view of Figure 1, with 1
is the gas inlet seat, which is located at the gas inlet section 1 shown in Fig. 1.
It is connected to 2. Further, gas entering from this gas inlet seat 1 is prevented from entering the gas outlet portion 11 shown in FIG. The upper part of the gas inlet section 12 is closed by a plate 22.

On the other hand, the gas outlet section 11 in FIG. 1 has a plate 18 at its upper part and a space 19 formed therein, and the gas outlet port 6 is connected to this space 19.
Gas is supposed to be exhausted from here.

In addition, 10 in FIG. 3 is a filling conveying machine, for example, an elevator. The separator 23 is a kind of sieve part, in which dust adhering to the filling is screened out, and the cleaned filling is transported upward again by an elevator. The dust-laden filling flows from the outlet 20 to the dust/fill separation device. Further, dust that has fallen at the gas inlet is discharged from the discharge port 21, respectively. Note that 17 is a damper device for adjusting the amount of filling material.

FIG. 4 is a longitudinal sectional view of FIG. 2, and numeral 1 denotes a gas inlet port which communicates with the gas inlet section 12 shown in FIG. Also, the gas that entered from this gas entry account 1 is transferred to the 2nd gas account.
It is designed so that it does not enter the gas outlet section 11 shown in the figure.

The upper part of the gas inlet section is closed by a plate 22. On the other hand, the gas outlet section 11 shown in FIG. , this gas passage 4 is connected to a gas outlet 6. Note that 7 is a filling conveyor, 8 is a distribution path for distributing the filling to the packed bed 5, and 9 is a extractor for adjusting the filling amount of the filling. Since the discharge ports 20 and 21 are the same as those described in FIG. 3, their description will be omitted here.

In the embodiment of the gas treatment device as a dust collector of the present invention configured as described above, the gas entering from the gas inlet port 1 enters the gas inlet portion 12 and fills the gas inlet portion 12, and the gas permeable member 13 is The gas passes through the packed bed 5 and, after being dedusted there, enters the gas outlet 11 through another air permeable member 13. In the embodiment shown in FIGS. 1 and 3, the gas that has entered the gas outlet portion 11 in this manner collects in the space 19 and is discharged from the gas outlet port 6. In the embodiments shown in FIGS. 2 and 4, the gas passes through the vent hole 14 provided in the partition wall 3, collects in the gas passage 4, and is led to the gas outlet port 6 and discharged from there. On the other hand, the filling material is continuously supplied into the filling bed 5, and is discharged while removing dust by a separator, and the filling material in the filling bed 5 is continuously replaced. When replacing the filling, if the embodiment shown in Fig. 3 is used as a device for recovering heat from high-temperature gas through the filling, the feeding path for the filling passes through the center of the device, reducing heat loss. do not have.

〔Effect of the invention〕

As detailed above, in the gas treatment device of the present invention, a cylindrical partition wall is provided concentrically at the center of the cylindrical body, and a plurality of packed layers are arranged radially in the annular space between the cylindrical body and the partition wall. The parts separated by the packed bed are alternately used as a gas inlet part and a gas outlet part, and the inside of the partition wall is used as a conveyance path or a gas flow path for the filling in the packed bed. Since it communicates with the gas outlet port, it is possible to increase the amount of filling material, substantially thicken the layer of the packed bed and increase the volume of the packed bed, and fill the cylinder with gas. It is possible to realize dust collectors and reactors that can flow while allowing the gas to flow, thereby slowing down the gas flow rate and increasing the contact time between the gas and the packing in the packed bed, thereby improving dust collection or reaction efficiency. . Further, in the gas treatment device of the present invention, the inside of the cylindrical partition wall serves as a transport path for the filling in the packed bed or a gas flow path and communicates with the packed bed or the gas outlet, so that the filling transport mechanism It is possible to make the dust collector and reactor more compact by making the gas flow path more compact, and it also solves the problem of strength under high pressure and high vacuum. This means that the limits for improving efficiency can be greatly expanded, and the effects are significant.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view showing one embodiment of the gas treatment device of the present invention as a dust collector, Fig. 2 is a cross-sectional view of another embodiment, and Fig. 3 is a cross-sectional view showing an embodiment of the gas processing device of the present invention as a dust collector. FIG. 4 is a vertical cross-sectional view of the gas treatment device as a dust collector in FIG. 2, and FIG. 5 is a cross-sectional view of a conventional dust collector equipped with a packed bed. . 2... Cylindrical body, 3... Partition wall, 4... Gas passage, 5... Filled layer, 6... Gas outlet port, 10...
Conveyor, 11...Gas outlet section, 12...Gas outlet section, 13...Breathable member, 14...Vent hole.

Claims (1)

[Claims] 1 A cylindrical partition wall is arranged concentrically at the center of the cylindrical body, and a plurality of filling layers are arranged radially in the annular space between the cylindrical body and the partition wall, and the space is separated by the filling layers. The parts are alternately designated as a gas inlet part and a gas outlet part, and the inside of the partition wall is used as a conveyance path for the filling in the packed bed or a gas flow path, which communicates with the packed bed or the gas outlet port. gas treatment equipment.