JP2003200037A - Reactor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reactor having a sealing plug which can hold a hermetically sealing property without being affected by attachment of a volatile salt and can be detached easily. <P>SOLUTION: A through-hole 5 is formed on an upper cover 4 for closing a top end opening 2 of a vessel 1 and a tube 9 is fitted to the through-hole 5. The sealing plug 10 having a sealing part 6 is attached to the top end of the tube 9. As a result, the hermetically sealing property between the plug 10 and the cover 4 can be held. Even if the volatile salt is stuck to the inside surfaces of the through-hole 5 and the plug 10, there is no attachment of the volatile salt in the sealing part on the outside surface of the tube 9 since the top surface of the tube 9 is in close contact with the inside surface of the plug 10 and the plug 10 is hardly fixed to the tube 9. Accordingly, the plug 10 can be detached easily. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reaction apparatus such as a molten salt electrolysis apparatus which handles molten salt as a solvent at high temperature.

[0002]

2. Description of the Related Art Molten salt is used as a solvent in dry treatment in the nuclear field, toxic gas treatment system in the environmental field and the like. This molten salt is subjected to various electrolytic reactions by using, for example, the reactor shown in FIG. 6 to produce electrolytic products. A conventional reaction apparatus will be described with reference to FIG.

In FIG. 6, reference numeral 1 is a container, a flange 3 is attached to the upper end opening 2 of the container 1, and an upper lid 4 is placed on the upper surface of the flange 3 to seal the upper end opening 2. . A through hole 5 as a sampling port is formed in the upper lid 4, and a plug 7 is provided in the through hole 5 via a seal portion 6. Molten salt 8 is put into the container 1, and the molten salt 8 is electrolyzed with other metals and compounds to produce an electrolysis product.

[0004]

In the reactor using the molten salt 8 described above, since the molten salt 8 is handled at a high temperature, it partially volatilizes, and this volatile salt enters the gap between the through hole 5 and the plug 7. However, there is a problem that the stopper 7 is stuck and the stopper 7 cannot be pulled out.

Particularly, there is a problem that reaction products and volatile salts adhere to the wall surfaces of the through hole 5 as the sampling port and the plug 7 and adhere to the wall surface so that the plug 7 cannot be removed and the sealing property is impaired. For this reason, there is a demand for a reactor having a stopper structure capable of preventing sticking due to volatile salts and maintaining a sealing property.

The present invention has been made in order to solve the above-mentioned problems, and it is a reaction having a stopper structure that prevents volatile salts from sticking to the seal portion, maintains the sealing property, is highly safe, and is easy to handle. To provide a container.

[0007]

The invention according to claim 1 is
A container having an upper end opening, an upper lid that closes the upper end opening, a through hole formed in the upper lid, a pipe portion hermetically attached to the through hole, and a sealing portion at the upper end of the pipe portion. It is characterized in that it is provided with a stopper airtightly provided.

According to the first aspect of the invention, when the molten salt volatilizes at a high temperature, the volatile salt flows into the through hole, but since the upper surface of the pipe and the inner surface of the plug are in close contact with each other, the seal portion is formed. Volatile salts do not adhere to the. Therefore, the temperature of the seal portion can be lowered, the soundness of the seal member can be maintained, and the sealability and operability can be improved.

According to a second aspect of the invention, in the first aspect, the plug is provided with a handle. According to the invention of claim 2, by providing the handle on the upper surface of the stopper, the stopper can be pulled out easily. Therefore, operability is improved, and it is easy to pull out the plug even in an environment with poor operability such as handling with tweezers in the glove box,
The sampling operation becomes easy.

According to a third aspect of the invention, in the first aspect, the upper lid is provided with a cooling mechanism. According to the invention of claim 3, by providing the upper lid with a cooling mechanism of air cooling or water cooling, the cooling property of the seal part is improved, the soundness of the seal member can be maintained for a long time, and the sealing property is improved. You can

According to a fourth aspect of the present invention, in the first aspect, the stopper is provided with a volatile salt preventing member. According to the invention of claim 4, since the volatile salt is trapped under the upper lid, it is possible to prevent the molten salt from sticking to the stopper and to cause a malfunction of the device outside when the stopper is opened. Will not be leaked and the safety can be improved.

According to a fifth aspect of the invention, in the fourth aspect, the volatile salt preventing member is inserted into the through hole and is detachably provided in the plug. According to the invention of claim 5, since the stopper and the volatile salt preventing member can be easily disassembled, the stopper and the volatile salt preventing member can be easily cleaned and the maintenance is easy.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of a reaction apparatus according to the present invention will be described with reference to FIG. In addition, in FIG.
The same reference numerals are given to the same portions as. That is, FIG.
In the present embodiment, the upper end opening 2 of the container 1 into which the molten salt 8 in a molten state is charged is closed by the upper lid 4. The upper lid 4 is provided with a through hole 5 used for a sampling port or the like. A pipe 9 is provided in the through hole 5, and a sealing plug 10 that covers the upper end opening of the pipe 9 is provided. Stopper 10
The inner surface of the seal portion 6 seals airtightly with the outer surface of the pipe 9.
Is provided.

In the present embodiment, the molten salt 8 charged into the container 1 is heated by a heater (not shown) and then melted to become a liquid, and a chemical reaction with other compounds occurs in this liquid. . Volatile salts are formed during heating or during the reaction. The volatile salt is captured inside the pipe 9, and the upper end surface of the pipe 9 and the inner surface of the sealing plug 10 are in close contact with each other.

According to the present embodiment, the tight plug 10 can be sealed by the pipe 9 and the seal portion 6, the operability of opening and closing the tight plug 10 is improved, and the tight plug 10 and the pipe 9 are sealed and opened and closed. Etc. are facilitated and the operability of sampling can be improved.

Next, a second embodiment of the reaction apparatus according to the present invention will be described with reference to FIG. In FIG. 2, the same parts as those in FIG. 1 are designated by the same reference numerals, and overlapping description will be omitted. This embodiment is different from the first embodiment in that
The handle 11 is provided on the upper surface of the stopper 10.

According to the present embodiment, the stopper can be easily opened and closed with tweezers or the like even in an environment with poor operability such as tweezers work performed in the glove box.
It is possible to improve the operability when opening and closing the stopper 10.

Next, a third embodiment of the reactor according to the present invention will be described with reference to FIG. In FIG. 3, the same parts as those in FIG. 1 are designated by the same reference numerals, and the description of the overlapping parts will be omitted. This embodiment is different from the first embodiment in that
The upper cover 4 is provided with a cooling layer 12 of a cooling mechanism by air cooling or water cooling.

In the present embodiment, the portion above the upper lid 4 and the inside of the container 1 having a high temperature can be thermally isolated, and the pipe 9 having the seal portion 6 can be kept at a low temperature. Therefore, the soundness of the O-ring material of the seal portion 6 can be maintained. According to this embodiment, the sealing performance can be improved.

Next, a fourth embodiment of the reaction apparatus according to the present invention will be described with reference to FIG. In FIG. 4, the same parts as those in FIG. 1 are designated by the same reference numerals, and the description of the overlapping parts will be omitted. In FIG. 4, the present embodiment differs from the first embodiment in that a volatile salt preventing member 14 having a plate portion 13 on the lower surface is provided in the sealing plug 10. The plate portion 13 is located at the lower end opening of the through hole 5.

According to the present embodiment, the volatile salt prevention member 14
By the plate portion 13 of the volatile salt, it is possible to prevent the volatile salt from adhering to the inside of the tube 9 and the sealing plug 10 and prevent the volatile salt from adhering to the tip portion of the tube 9. The sealing performance of the tight stopper 10 can be improved.

Next, referring to FIG. 5, a fifth embodiment of the reactor according to the present invention will be described. 5, those parts that are the same as those corresponding parts in FIG. 4 are designated by the same reference numerals, and a description of the overlapping parts will be omitted. The difference of the present embodiment from the fourth embodiment is that the volatile salt preventing member 15 is detachably provided on the sealing plug 10 in a fitting or screw structure, for example.

According to the present embodiment, since the hermetic stopper 10 and the volatile salt preventing member 15 can be disassembled, the volatile salt preventing member
By replacing or cleaning 15, the stopper 10 can be reused.

[0024]

According to the present invention, the pipe is provided in the through hole such as the sampling port provided in the upper lid, and the seal portion is provided on the outer surface of the pipe and the inner surface of the hermetic stopper, thereby sealing the container with the hermetic stopper. The sealability of the portion and the operability of the stopper can be improved.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a first embodiment of a molten salt reaction device according to the present invention.

FIG. 2 is a longitudinal sectional view showing a second embodiment of a molten salt reaction device according to the present invention.

FIG. 3 is a vertical cross-sectional view showing a third embodiment of a molten salt reaction device according to the present invention.

FIG. 4 is a longitudinal sectional view showing a fourth embodiment of a molten salt reaction device according to the present invention.

FIG. 5 is a vertical cross-sectional view showing a fifth embodiment of a molten salt reaction device according to the present invention.

FIG. 6 is a vertical sectional view showing a conventional molten salt reactor.

[Explanation of symbols]

1 ... Container, 2 ... Top opening, 3 ... Flange, 4 ... Top lid,
5 ... Through hole, 6 ... Seal part, 7 ... Plug, 8 ... Molten salt, 9 ...
Tube, 10 ... Sealed plug, 11 ... Handle, 12 ... Cooling layer, 13 ... Plate part, 1
4, 15 ... Volatile salt prevention member.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Naruhito Kondo             1-1 Shibaura, Minato-ku, Tokyo Co., Ltd.             Toshiba headquarters office F-term (reference) 3H025 DA01 DB22 DD01                 4G075 AA01 AA37 AA51 AA52 BB03                       CA02 CA66 DA02 EA01 EB01                       EB13 EB15 EC25 FA05 FA08                       FB01 FC06

Claims (5)

[Claims] 1. A container having an upper end opening, an upper lid that closes the upper end opening, a through hole formed in the upper lid, a pipe portion hermetically attached to the through hole, and a pipe portion of the pipe portion. A reactor equipped with a stopper which is airtightly provided at an upper end thereof via a seal portion. 2. The reaction apparatus according to claim 1, wherein the stopper is provided with a handle. 3. The reaction apparatus according to claim 1, wherein the upper lid is provided with a cooling mechanism. 4. The reaction apparatus according to claim 1, wherein the stopper is provided with a volatile salt preventing member. 5. The reaction apparatus according to claim 4, wherein the volatile salt preventing member is inserted into the through hole and is detachably provided in the plug.