JPS59116588A - Heating container for microwave heating denitrification equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention; J, using microphone 11 waves, IJ j no 11 heat 1
B) J'J! is a heated sulfur chamber that is installed within the premises of ill'l station and contains the materials to be processed. ! This relates to a heating container of the order of magnitude.

Thermal de-lIl'l equipment using 11 microphone waves has already been used in many technology 1+i fields, and is also used in 13th and nuclear power related fields to remove uranium, plutonium, F-
Contaminated with 11 nuclear fuels such as lithium v1 and 31st nuclear fuels 71! ,: Nitric acid-based 'FJ 1lt2 containing substances is heated and dried, and further uranium oxide and oxidized pul-1
It is often used in the so-called denitrification process, which produces nitrogen.

Since Iit, Iil'l acid 1 l-l-nium, uranium solution) 1
Each U+2 nitrate was made 11 times depending on the flow rate. This fluidized bed method involves blowing solid particles into hot air in a device.
S) Koyu! There is a technique that involves placing a layer 1' in a suspended state, spraying 1 liter of the liquid to be treated on that layer, and drying the surface of the solid particles or baking it to a thickness of 1 minute.

However, in the P) method using such a fluidized bed, lB2!
It has the serious drawback of poor recovery of the ll'1 product,
Historically, there was a drawback in that the physical properties of the 11;2-nitrate compound were poor, and it was not possible to produce pellets that could be used in 81.

In addition to this, λ・]shi, ii are being emitted from the microphone.
Using -1 wave7. :IBM IIl'J Sooka's denitrification products are powder products, but they have problems in that they are difficult to use and have low denitrification processing capacity. A conventional denitrification device is installed inside the J5, and the object to be treated is placed inside and heated to IJI+; 2. The heating container for the nitrification treatment is usually a stainless steel container.

As a one-wave heating container for microphones, general (1.? ramic di'n such as alumina) is often used, but this type of container has poor thermal shock resistance. ] However, it is inappropriate to use uranium (!
i eye item ＼゛) Pull 1-=-U 11 Oxides such as oxides (
Yes, because both have oxide C' (Kozono IN
l [11 was bad. When using a stainless steel container as a heating container, the stainless steel surface has the disadvantage of poor thermal efficiency, and after heating, the stainless steel surface and treatment However, the peeling between the materials (in this case, oxides) was still as bad as before, so it was necessary to take out the material to be treated by removing the Swan 1 Nos container from the cold 711JLT to the 14J' station. From the supply of the material to be processed to the removal after processing (it takes a long time and a lot of people!'?
! The disadvantage is that the processing is difficult.

The object of the present invention is to eliminate the drawbacks of the conventional techniques 1. It is an object of the present invention to provide a heating container for a microwave heating denitrification device, which can be supplied, taken out and recycled many times, and the carbon processing capacity can be greatly increased.

-1- The present invention, which can achieve the recognized J-4fO objective, is made of silicon nitride wood and has a smooth surface at least in the part that comes in contact with the workpiece. .1
Wave 1j [1 heat 1;) This is a heating container for a sentry device.

Hereinafter, the present invention will be explained based on the drawings.

Drawing (Jl, This invention (,l) is an explanatory view showing one to example of microphone [ ] wave +111 heat II (a) II neck wearing using the heating container according to the present invention, This equipment is suitable for denitrification processing of uranium solutions, etc. In this example,
-As mentioned above, microwave heating decomposition 111'l 1! i position 2 is glove box 1'
1ra is configured such that microwaves from a microwave generator (shown as U in the figure) installed outside are applied to the inside through a waveguide 9.

? Microwave heating IBJ lit'l 'RW 2 +7
) Top surface 1. Z IJl, 2 pieces of processed material supply 1-18
A heating container 12 is located directly below each part.

・These heating containers 12 are attached to the support rods 151 and T.
supported, the support rod 15 is microwave heated 11;
3 There is a step on the side wall of the glass neck 2.
Ninitsu (rotatably supported. Following, support rod 1
I decided to turn 5 into 3! ) +, + Can you take over the heat container 12 and divide it into 1 section? ll'kiru. Furthermore, Marri 1
1st wave Kail fever IBa! If'I device 2, the bell 1 to the conveyor 4 are installed on the F side of the heat container 12. Monowoma,,(/
) ') Wave 1311 Heat 11RIi+'4 External 1 of device 2
111fl out'! This is the 7th J. What about Bellmy conveyor 1 and support rod 15? Microwave heating theory Installed through the side wall of the glass fitting 2 through 13 (because it is necessary to pull it,
tThe circular part of it has a microwave leakage prevention LL mechanism 55.6
is included in III. In this example, the microphone has a structure that prevents leakage of one wave.
, or internal cleaning nozzle 10＼′″) off-cut pipe 11
, optical Renly 1G, and pump 33 for discharging O/cleaning liquid.
Hide is different. c15, the member indicated by reference numeral 13 fitted into the wave holder 9 is a microwave transmitting member 71.
It is an 11-panel window made by

Now, the most important thing here is the heating container 1 according to the present invention.
2"C8q. This heating container 12 is a shallow container made of 9-ion nitride, and its inner surface, that is, at least the part that comes into contact with the object to be treated 14, has a clear surface condition. This small heating container 12 is made of silicon nitride, which is made of silicon nitride, hot-press C-fired and sintered into a container shape, and then mechanically polished with hII on its inner surface. Manufactured by smoothing.

The heating container 12 having such a structure is subjected to heat drying treatment 1] 15
The peelability of the object to be processed is extremely good, and the object to be beaten inside can be easily and cleanly taken out by inverting the IJ11 heat container one by one. The microwave transmittance is good at 67% (it has the excellent advantage of being able to quickly heat the entire object to be treated). Defense lL, tJruJ, °λ
From 11″6 j'i'; Kamedoriru no Nozomi J, Shi・i.

Next, using such a microwave heating station position, :1111 til'1. -About I f'l (abbreviated explanation).
'lII+i uranium is supplied to the treated material [-18 to IJ1
11 (supplied. and?-r black) in 1 heat container 12
The eruption came from one direction! ) (J mountain and 7 and mari [
1: Microwave heating the skin) (Inside 1A ia 2 (J
The object to be processed 17'l is heated. The brewing silane placed in the heating container 12 made of silicon nitride is heated to a temperature of 200 ml, and then first moved around and heated to a temperature of 200 ml. s cam RL
, next itel1r1 acid uranka heat component IiI'1' starts, 40 (1'C around J, back) crystal J, -]
The thermal decomposition is almost completed, and the uranium nitrate is converted to uranium oxide4.
゛）ru. In this process, silicon nitride is
Microphone 1] Wave TJ: Jl
The object to be treated passes through the heating container 41 times as it decreases, and the object to be treated is exposed not only to the exposed surface but also to the part that is in contact with the heating container.
The overall temperature is 1111. 1st part of A, -l
Microwave 1νk 11X2 efficiency is good +17 for non-1n. Furthermore, what about silicon nitride?
There are no standing waves, in other words, the microwaves do not concentrate in a certain area and cause local IJII heat. Therefore, it is recommended to apply high-power microwaves, and even in this case, it is possible to improve the processing speed by about 10611 degrees.
, I can do it.

In addition, in the process of such heating 012 processing, f+l'l
Acid l Cow dregs are generated, but the gas generated is off-dregs f:
; Microphone [: is discharged to the outside of the single-wave heating denitrification device 2 via 11. When the IBJ nitration of the object to be processed 14 is completed, it can be detected by visual inspection or optical lens 1 (5).
i (Rotate the cow 1 and 5 and 1) ■ Slide the heat container 12 downwards.The processed material that has been denitrified will fall on the bell [-:1's hair 4, and therefore the bell 1 ~Ifl out of the microwave heating Iff glass device Q2 by conveyor 4
As mentioned above, the +Jll heat vessel 12 has 4 grooves in the nitriding surface, but since the surface has a (Here is 11J item) Which peelability is B; C is good C1
; I'l 71 is Il jl', +, heating container 1
It is possible to completely fall down from the place being heated.However, as the bottom of the heating container is deep, it may be difficult for it to fall naturally. J.
U':'K'B For the case, use a simple 14i scratching F'A shi device (jf is set up.

d: 7, :, Silicon nitride has a thermal expansion coefficient of 2.4X1 (
Because it is small at 1-7'℃, the thermal shock resistance is 11J. i
0 (] 'I don't think it will break 10 if I drop tJ into water after recovering from fever. Is that why? I!! Treated material C
After removing a certain uranium oxide, there is no risk of damaging the heating vessel by adding 1 liter of liquid uranium nitrate, and the number of treatments can be increased by 4. In addition, if the inside of the wave heating denitrification device 2 becomes dirty during these steps in 11.1, insert the nozzle 10J for internal cleaning. After that, drain the cleaning liquid using pump 3.

As mentioned above, microwave heating UP using the present invention 1. l'
Although one example of the device has been described, the gist of the present invention lies in the heating container itself, and the 72-k [-1
What about the wave ll1l heat 1121i+'j station? It is the meaning of the word, and it is the meaning of the word 1f-.Also, the microphone]] Wave leakage prevention Yui;
Also, the means for discharging the generated material to be processed is also placed on the bell 1-conveyor, and the microphone 1-1 wave heating nta'3
The lea i city (-rayoi,) which is handled as it is with a complete hopper from the bottom of the AiQ.

The present invention is as described in -1 below. Peeling of objects/I
t is good (, strong against thermal shock, and transmits 1) waves 7°IC made heating volume Kj + '('
Therefore, it is possible to apply j-wave power, and immediately after the thermal denitrification treatment is completed, the liquid material to be treated is added (in order to restart the heating film 1i1'4 treatment work, It has a number of excellent effects, such as improved work 111i and 4T, which made it possible to handle large groups.

[Brief explanation of the drawing]

The drawing shows microphone 1-1 wave heating IB2 using a heating container according to the fifth book! I'l I'L ir? There is an explanatory diagram C showing an example. 2...Mark [1-wave heating IB,: Iil'l device, 4...Bell 1-] amplifier, 7...Bearing, and 3...Her place supply I1.9)...Waveguide , 12... Heating container, 1/I... Wave starting material, '15... Support frame. 4j revision applicant: Power reactor/Sugimo'
Human Genus IHI (J 311
Same Shigeji (B same as Yunosuke Aramoto)

Claims (1)

[Claims] 1. Microphone] A heating container that is installed in a heating device that uses J-waves to heat and process the object to be treated. , Microwave heating m2 nitrate Pi to ensure that at least the part in contact with the object to be treated is flat;
Heating container for iFj.