JPS6249296A - Evaporating concentrator - 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 (Technical Field of the Invention) This invention relates to an evaporative steel wire device that evaporates and concentrates the object to be processed using one wave of 1111 heat [Technical Field of the Invention] When reprocessing 1'l of spent nuclear fuel used in a nuclear power plant (21, in the extraction process 1-1, the spent lary of the human being is investigated; an external solvent is used) 1. -jjjru. This used organic solvent (transferred to an evaporation concentrator) was distilled and separated, and the components were recovered.

Conventionally, evaporative ill! l narrowing 1j] 1 heat 1 no I < 7-1
C is the outer wall (resistance) of the container that stores the object to be processed.
', J+N heat heater is installed (external heating method is often used).

FIG. 3 shows an example of an externally heated JJ type vapor concentrator, so 1 kl is stored in this and 1. : Processing object 2 +
A resistance type heater 3 is installed on the outside 39 of the 1111 heat tank for heating 1J, and a part of the heating tank 1 is steamed! L, 1:
An evaporation line 1-) for conducting the solvent to the condenser 4 is connected.

This evaporation line 5 also serves as a line for reducing the temperature inside the heating tank 1 by 1F by means of an L''i empty pump 6 connected to the condenser 4.

On the other hand, a recovery tank 7 for recovering condensed liquid is connected to the t portion of the condenser 4 via recovery fins 8.

Next, use the external heating fj K evaporation concentrator that has been built up to remove the spent fumigation 1 for fΦ.
1 Self-processing 11 effects, SR cow t,: Waste I 1 Process of concentrating solvent ``Explain the culm.

This waste machine solvent W! ]! +! -1 culm contains 30% phosphoric acid i-libdal (hereinafter referred to as TRP).
Taking advantage of the difference in boiling point, n-dodecane is separated by distillation and reused.

In this case, T B P 30% and rl-F Te))
:, '7091'+ (7) Processing object 2 to 1111
It is stored in the heat tank 1, and the inside of the heating tank 1 is pumped with an empty pump 6.
When the pressure is reduced from 1 J, electricity is applied to the heating heater 3 to heat the heating tank 1 and the object to be processed 2.

Popularity/Under tg ゛ is T 11 r-) is about? 80T
11-dodecane boils at about 200°C. J: n-dodecane boils at about 200°C.
1 to 1, and [8F) thermally decomposes at about 280°C, but the thermal stability f1 of TB[) is below 150°C.
1- The boiling point of BP is less than 150"C", and the inside of the sea urchin heating tank 1 is reduced.
Heat it up.

1/j, n Dodecane It, about 80'Cr? MIL!
i l-, ding [3I] and j)-tochikan's It, zui
1 (If the window Δ7 does not occur, IJ, 1in-1"j'kan or steam light will be emitted from the object 2 to be processed.

The evaporated r)-totican is cooled and condensed in the condenser IJif device 4 and recovered in the recovery tank 7.

(1 yen reward technology problem person) Atomic /J /II! ! Set's J7J 911 Burial Count τ
・Used wet uranium and plu-1-nium are extracted with organic solvent (
However, the extraction solvent used is phosphoric acid.
A solvent of 1 l ([3[)) and dodecane, -?
'-': After extracting z J's, a waste solvent is produced, but this waste solvent is vaporized by Av1 ('1'' f31) Dojit'
It will be separated into cans, collected and republished. However, T B
F] and dodecane are thermally indeterminate, F], 1;]0°
It is thermally decomposed above C, and T I3 +-) is decomposed into D l-3P and 413 [), and more captivating water lines (47) are decomposed.

Therefore, it is expected that the waste solvents of Reraou BP and Tochikan will be thermally decomposed.

A steaming device is used for the recovery process, but in a general distillation device d, the heating of the oil to be treated, that is, the solution, is carried out in the first stage, and the heat is However, when the solution is heated by these 1111 thermal means, the temperature of the solution is 10Wl = J. However, the heating of f11, To (, 1 solution, J, st-, 1 it is necessary to increase the temperature 1 V of the heat source,
Therefore, as mentioned above, (2) thermal decomposition occurs in the d liquid (2).
1: Inspection work must be carried out to ensure that there are no active substances mixed into the waste organic solvent.
There was a risk of exposure.

[Object 1 of the Invention] The present invention has been made to eliminate the vacancies in the conventional evaporation concentration equipment mentioned above. 1j
(1) An object of the present invention is to provide an evaporative concentrator 4 that eliminates the need for a heat heater, improves the recovery rate of distilled products, and facilitates installation inspection.

[Summary of the invention] The present invention 1: 1 wave transmission
17 end from the wave transmitter [1 wave illuminates 1' A-bun, and is housed in this A-bun, and the front 1,11\noi'/
A heating tank made of an induction electric material that stores the material to be heated by the II wave, and an evaporation tank that communicates with the heating tank and is installed outside the oven. Is the active ingredient semen a? The second step is to collect the distillate from the rectification tower 1) l i3! ll
This is an evaporation concentration device characterized by comprising a sink, the evaporation tank, and a hollow pump for reducing the inside of the distillation tank by 11 hours.

(Example of the invention) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral U and reference numeral 11 indicate a heating tank C in which the object to be processed 12 is stored. This heating tank 11 is made of an inductive electric material 11 such as tram switch C, and is installed in an oven 13.
+! It has been paid. An evaporation tank 14 is attached to the outside of the oven 13, and a connection line 15 passing through the side wall of the heating ring 11 and 13 is connected to the evaporation tank 14.
a, 15 b C-linked.

The i'fg oil supply system is attached to the lower connection line 15b.
There are 6 or 18 in a row. Further, the oven 13 includes an isolator 178 and a power meter 17b.
3 and a matching box 17G, 11 I microphones 19 are connected through a waveguide 18 equipped with a matching box 17G, and the 7j microphone 1] wave is oscillated and the 7j microphone 1] wave is oscillated. -Jin 1
The heating tank 11 inside 3 is filled with 1 (4) sea urchins.

-hS vapor light tongue/) Part of 14 has a microphone n 11&
An evaporation line 21 is connected to the evaporation line 21 for introducing the columnar components of the material to be treated, which have been evaporated by heat, into the sludge 120. Note that this evaporation line 21 is connected to a vacuum pump 22 connected to the rectification column 20, and a line 17 for maintaining the inside of the evaporation tank 14 and heating tank 11 at reduced pressure is also bent. ,'l: The I bow 23 shows a vacuum h1, and a recovery tank 26.27 is installed at the bottom of the 4° lees 1 and 20 via a recovery line 24.25. J
I'm here. Also, between the recovery tube 24 and the rectification column 20,
．． A ψ flow twin 28 is installed to adjust the concentration of the 1 evaporated active ingredient. il1
A slow flow line 29 for temperature adjustment is provided.

Next t2i! A case in which [1-dodecane is distilled and fractionated from a waste organic solution mixed with []-dodecane in the evaporation concentrator of the present invention, which is configured to be as large as 1i, will be explained below. .

3) A waste organic solvent containing 30% and 0% of 11-dodecamp is supplied from the solution supply system 16 and stored in the evaporation tank 14. In this state, the vacuum bomb 122 is turned on to maintain the inside of the III heat tank 11 and the evaporation tank 14 at a negative value of 1, and the mark wave transmitter 19 oscillates a seventh wave. At this time, the 11th wave passes through the heating tank 11 made of a conductor and heats the object 12 to be processed. −
While monitoring the heating tank 11 and the evaporation tank 14, vacuum the temperature of the heating tank 11 and the evaporation tank 14 to keep the boiling point of ``B f'' below 150℃ and heat the object 12 to be processed 4.
Then, the boiling of Ti-dodecane +;', i 1.11- F
'rP's boil 1jQ J, you low-spirited idiot, is this a waste J machine? 1
C'n-dodecane in the vapor evaporated from the medium is concentrated.

This concentrated r)-dodecane-containing vapor is introduced into the rectifying tank 20 through the evaporation line 21 (S), where the r)-dodecane contained in the vapor is further concentrated and purified, and the recovery line 2/1 It is collected into the collection tank 26 via. I C
Oh, if the concentration efficiency of rectification '7f 20 decreased, it was branched and connected to the recovery line 24)! The vapor is returned to the rectifier th 20 through the flowing in 28, and after concentrating and purifying n-dodecane again, it is recovered in the recovery tank 26.

On the other hand, the steam evaporated from the object 12 contains several percent of T.
BF) is also concentrated and purified by rectification and sent to the recovery tank 27 via the recovery line 25. be done. In this case, if the concentration efficiency of TRP inducer decreases, the branch connection is made to the recovery line 25.
．． Ti! Ryu Urain 29. I u) Illll Return to the combined liquid generation tank 14 and evaporate again - U T f3 P
Collect 1111 parts of n-dodecane.

In addition, the material of the heating tank 11 is
Not limited to Nomitsuku material $ 1 kJ, but also other #lT equipment with 11 wave transmission Takezuki ¥ J T' A ruru 4 fluoride 10 E non-resin) +1 and -C is also good.

Next, Figure 2 shows the results of the experiment carried out to confirm the effectiveness of the concentrator on the fish 1F of l i4i.In the figure, curve a is Microphone 11 wave heating, 1-1, Curve 1) is 4 parts heating (te-) I- is used C1'
l'3 F) and ")-When removing the distillate 1i111 of Dojkan's 5-combined solvent, 11- of the target Q!I J!P!
1'Changing the containing chamber of decane 1. This is an airtight diagram for the case of ~.

As is clear from this figure, when the waste organic solvent is heated with waves, the content of n-dodecane in the steam is lower than when using an external heater, especially when reprocessing spent nuclear fuel r1. When the n-dodecane content of the organic solvent is about 70%, the steam contains almost no T 13 P and only ``)-dodecane.''"Efficiency", it is possible to separate 4 (inclusive).

(Effect of the invention Song Dynasty) l-mentioned (second evaporation concentrator tJt heating of the present invention)
J r”
So de i').

Processing materials can be efficiently processed to concentrate seafood.

Steamed 5F lii crimp jN- according to the present invention
C is 1111 of the induction electric body 1 installed in the A-bun (-).
The material to be treated is stored in a heat tank, and -) 7-Ita 11 wave f
2, 1, 1C heated l rice, treated 1'I + hth)
The recovery chamber for the active ingredients to be evaporated and separated can be separated. Microphone n-wave heating η゛ causes the heated object itself to act as a heating element, so it unnecessarily raises the temperature. - It is possible to do C'. In addition, the #II treated product was added to 7-11
In the case of heating by waves, +51.1 internal 1j11 heat!
The heat transfer area of the heat tank/7 outer wall should be taken into account for peace of mind.
1111, making maintenance thermal inspection easy.

[Brief explanation of drawings]

FIG. 1 is a system diagram showing a schematic configuration of an embodiment of the evaporation heating apparatus according to the present invention (J), and FIG. Showing the relationship between the content of 1-dodecane in steam and steam7) .11...Heating 'non-knocker' 2.112...Workpiece 3...Heating (teter 4...
・・・ ・・・ ・・・I have doubts; Worry 5・・・・・・
...Evaporation line 6.22...Vacuum pump 7.20.27...11th cycle 8.24.25...Recovery, In 13... ...t-1n14...
・・・・・・Make it all 15a, 151)...
Connection line '16...... Melt 8 supply system 17a.
・・・・・・・・・7 Iso (Notar 17 [)...
・・・・・・Power meter 17G・・・・・・・・・Matching box 18・・・・・・・・・Sake wave tube 19・・・・・・・・・My' For -] Wave Light (Heki 20......!1) Station 1j) 21...
・・・・・・・・・Evaporation line 23・・・・・・・・・
...inner space t128.21) ... reflux line applicant stock trial Toshiba attorney 1- Su 111 Sa - Figure 1 ○ 20 40 60 80 700) Bath 4
Protector Donna” Han ↑4 rate-) Figure 2 Figure 3

Claims (1)

[Claims] (1) A microwave transmitter, an oven that is irradiated with microwaves from the microwave transmitter, and an induction-electric heating tank that is housed in the oven and stores the object to be heated by the microwaves. and an evaporation tank connected to the heating tank and provided outside the oven;
A rectification column that rectifies the active ingredients evaporated in this evaporation tank, a recovery tank that recovers the distillate from this rectification column, and a vacuum pump that maintains the inside of the evaporation tank and rectification column at reduced pressure. An evaporation concentration device characterized by: