JP4562076B2 - Metal sodium spraying apparatus and method - Google Patents

Description

  The present invention relates to a metal sodium spraying apparatus and method, and more particularly, solid metal sodium is melted and liquid metal sodium is not solidified / clogged from a nozzle attached to the upper part of the tank in the solution in the reaction tank. The present invention relates to a technique that enables efficient spraying in a fine particle state.

  Metallic sodium has a melting point of about 98 ° C. and is solid at room temperature. It is extremely active in the air and oxidizes when exposed to moisture in the air, and becomes an oxide or hydroxide such as sodium oxide or sodium hydroxide. At the same time, hydrogen is easily generated or ignited. For this reason, it is normally stored or transported in a solid state in a drum can or various containers under an inert gas atmosphere such as nitrogen or helium. Solid metal sodium stored in a drum can etc. is heated and melted on the user side, and used as various kinds of reactions, heat media, etc. as liquid metal sodium.

The above metallic sodium is used, for example, to produce so-called sodium alcoholate, which is reacted with an alcohol solution such as t-butyl alcohol (hereinafter referred to as TBA). In this reaction operation, TBA has a boiling point of 82.5 ° C., which is lower than the melting point of metallic sodium. Usually, the reaction temperature is set to be equal to or lower than the boiling point of TBA. It reacts in the solid state at the following temperatures. Therefore, conventionally, a metal sodium dispersion (a dispersion having a particle size of about 5 to 10 μm) has been used in order to increase the reaction efficiency or increase the contact area with TBA. However, the metal sodium dispersion is very reactive, and the solvent in which the metal sodium is dispersed becomes an impurity in the reaction and is difficult to handle. Under such circumstances, at present, for example, as disclosed in JP-A-5-170680, by adding a hydrocarbon solvent to TBA, the consolidation temperature is lowered to facilitate handling and TBA. The boiling point of the solution is raised, and liquid metal sodium obtained by melting solid metal sodium is sprayed and reacted in a fine particle state from a nozzle attached to the upper part of the tank toward the solution in the tank. By the way, as described in Patent Document 1, as a technique for spraying liquid metal sodium in a fine particle state, liquid metal sodium is poured into a rotating cup and sprayed while being granulated by centrifugal force. There is a configuration using a so-called spraying principle in which an active gas is flowed at a high speed, the tip of the nozzle is made negative pressure, liquid metal sodium is sucked and blown off in a fine particle state by the high-speed gas.
JP 2001-13293 A

As described above, when the liquid metal sodium obtained by melting the solid metal sodium is sprayed on the solution in the reaction tank from the nozzle provided in the upper part of the tank, the following problem arises.
(A) The apparatus includes a melting part for heating and melting solid metal sodium, a reaction tank, a supply path for connecting the melting part and a nozzle provided in the reaction tank, an inert gas supply means for replacing the atmosphere of each part, and the like. Minimal need. Further, for example, metallic sodium used for sodium alcoholate contains many impurities such as calcium in normal industrial products because it is expensive when it is of high purity. For this reason, during operation, the impurities and trace amounts of oxides adhere to and solidify in narrow places such as nozzles and nozzle outlets, making liquid metal sodium fine particles difficult or clogging, causing failure. The use of the pump is also restricted, and the operation is complicated accordingly.
(A) In the above-described nozzle configuration in which spraying is performed using the centrifugal force, in addition to the possibility that the nozzle is blocked by the oxide described above, the spray pattern is in an empty conical state (the cross-section is annular, and is referred to as a hollow cone) The contact efficiency with the solution in the tank is low and the supply efficiency is also poor. In addition, in the nozzle configuration for spraying based on the above-described principle of spraying, fine particles having a particle size commensurate with the minimum hole diameter of the nozzle are obtained. For example, as the nozzle tip portion becomes thinner, the nozzle tip portion is blocked with the above-described oxide. It becomes easy to be done.
(C) If the temperature in the reaction vessel, that is, the temperature of the solution is equal to or lower than the melting temperature of metallic sodium, the surface temperature of the nozzle will also be equal to or lower than the melting temperature.・ It will be solidified. Therefore, there is a possibility that the nozzle having a structure in which the liquid metal sodium is held in the nozzle or the supply flow rate is suppressed is solidified.

  The present invention has been made in view of the above background. The purpose is to realize a metal sodium spraying apparatus and method that prevents solidification and clogging in the nozzle and enables more stable and better spraying when spraying metallic sodium under conditions below the melting point. There is.

In order to achieve the above object, a first aspect of the present invention provides a metal sodium spraying apparatus for spraying a liquid metal sodium obtained by melting solid metal sodium into a solution contained in a reaction tank from a nozzle attached to an upper part of the tank. A melting part for heating and melting metal sodium; a storage part capable of introducing liquid metal sodium melted in the melting part via a first supply path; and a second supply path for supplying a predetermined amount of liquid metal sodium from the storage part. And the nozzle provided in the reaction tank and connected to the second supply path to inject the liquid metal sodium toward the solution in the reaction tank; , attached together and a inert gas supply means for feeding an inert gas to the respective portions, to the reactor rotary shaft and the rotary shaft disposed in a substantially central vertical Has been a stirring means having a stirring blade was, and two or more nozzles which are provided in connection to be switched to the second supply path to the rotating shaft substantially concentrically as the nozzle, the nozzle suction A liquid conical nozzle having a main body in which a mouth, a waller chamber, a whirling chamber, and a discharge port are formed in this order, and a waller fitted in the waller chamber of the main body, the liquid being supplied from the main body suction port Metallic sodium is turned into fine particles while swirling through the waller, and sprayed from the main body discharge port.
Further, the invention of claim 2 is taken from a spraying method, in which liquid metal sodium melted with solid metal sodium is sprayed from a nozzle attached to the upper part of the tank in a solution contained in the reaction tank. In the spraying method, using the spraying device according to claim 1, an atmosphere substitution step of substituting the atmosphere in which the metallic sodium is present with an inert gas, and melting the solid metallic sodium in the melting portion, the liquid metallic sodium As a melt supply step of supplying the storage part from the first supply path, and maintaining the reaction temperature of the solution below the melting temperature of the metal sodium, the liquid metal sodium in the storage part is removed from the second supply path It is supplied to the nozzle, while swirling the liquid metal sodium by the nozzle into fine particles, cross-section substantially circular as spray shape from the lower spout It is characterized by undergoing a spraying step of spraying while forming a uniform flow distribution.

(Background and Invention Points) The above inventions have been devised from the following background. That is, in the above-mentioned production of sodium alcoholate, instead of using a difficult-to-handle sodium dispersion, a hydrocarbon-based solvent such as n-hexane is added to TBA to increase the boiling point of the TBA solution. I tried to spray sodium. In this conventional method, the hydrocarbon solvent as an additive must be removed by a post-treatment, and the number of steps is increased and complicated, resulting in an increase in cost. Accordingly, the present inventors have studied a configuration that can stably and efficiently produce sodium alcoholate using liquid metal sodium without adding a hydrocarbon solvent to the TBA solution, and thus completed the present invention. It came to do. The invention devised point is that the storage unit is interposed between the melting part and the reaction vessel as an apparatus, and the temperature and solution state of the liquid metal sodium introduced from the melting part in the storage part is strictly maintained and managed. When spraying liquid metal sodium onto the reaction tank solution (TBA solution, etc.), the supply amount to be sent to the reaction tank is easy to control, and the use nozzle has a waller fitted in the main body, and the liquid metal sodium is By spraying in a full conical state, the reaction time can be greatly shortened by obtaining uniform and good contact of metallic sodium with the solution. In other words, the spray shape is generally classified into a straight-ahead type, a fan shape, an empty cone type (annular type), and a full cone type from the cross-sectional shape of the spray. The filled-cone type of the present invention makes molten metal sodium fine particles while swirling and sprays while forming a uniform flow distribution with a substantially circular horizontal cross section. This increases the chance of contact of liquid metal sodium with a conventional TBA solution to which no hydrocarbon solvent is added, thereby facilitating the reaction so that sodium alcoholate can be efficiently produced.

In the inventions of claims 1 and 2, the temperature of the liquid metal sodium, the supply mode, by managing the liquid metal sodium by the storage part interposed between the melting part and the reaction tank and supplying it to the nozzle in the reaction tank, The supply amount etc. can be controlled strictly. At the same time, the nozzle has a waller in the main body and turns liquid metal sodium into fine particles while swirling liquid metal, thereby eliminating the possibility of clogging. After spraying, the solution in the reaction tank The reaction efficiency can be increased by increasing the contact area with a uniform flow rate distribution with respect to. In addition, for example, by providing a nozzle other than the first nozzle among the plurality of nozzles as a spare nozzle, even if the used nozzle is blocked, the reaction can be performed by switching to another spare nozzle. Be able to continue without stopping or stopping. Further, in the invention of claim 2, for example, in the production of sodium alcoholate, when adding metallic sodium in alcohol, in an alcohol of the reaction temperature (temperature of the solution in the bath) is below the melting temperature of the metallic sodium, claim 1 by using the device, the liquid metal sodium by spraying an alcohol in the reaction vessel, to be able to generate efficiently sodium alcoholate to promote reaction with an alcohol.

  Preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing the overall configuration of the apparatus of the present invention, and FIG. 2 is a schematic configuration diagram showing a nozzle. In the following description, after describing the apparatus of the present invention, the method of the present invention will be referred to by giving examples.

  In FIG. 1, a metal sodium spraying apparatus includes a melting section 1 for heating and melting solid metallic sodium, a storage section 2 for introducing liquid metallic sodium melted from the melting section 1, and a reaction tank 30 for storing a solution in advance. And a reaction processing unit 3 for spraying the liquid metal sodium in the storage unit 2 from the nozzle N toward the solution in the reaction tank, and the melting unit 1 and the storage unit 2. Route pipe 4 as the first supply path connected, path pipe 5 as the second supply path connecting the reservoir 2 and the nozzle N in the reaction tank 30, the gas supply means 6 and the suction means 7.

  Here, the melting part 1 is a location where the drum can 10 containing solid metal sodium is positioned and disposed, and the drum 10 is heated by the external heater 11 to heat and melt the solid metal sodium in the can. The drum can 10 is, for example, a transport can, and has a plurality of connecting portions provided on the upper surface. Among them, the gas supply means 6 and the suction means 7 are connected to the first connection portion via a common pipe 16 and an on-off valve 8a so as to be switchable. The upper end of the outlet pipe 15 provided in the can is held in the second connection portion, and one end of the path pipe 4 is connected to the upper end of the outlet pipe 15 with an on-off valve 8b and a flexible pipe (not shown). Connected through. For example, when the inside of the drum can 10 is excessively pressurized by the inert gas pumped from the gas supply unit 6, the third connection portion can appropriately exhaust the gas. The external heater 11 may be a band heater or a ribbon heater as long as it can be melted by heating to a melting point of 98 ° C. or higher, preferably 110 ° C. or higher, at which the metallic sodium in the can is melted.

  The storage unit 2 has a storage tank 20 for introducing the liquid metal sodium in the drum can 10 through the outlet pipe 15 and the route pipe 4. The storage tank 20 is heated by the external heater 21 and is weighted via the load cell 22 (total amount of liquid metal sodium introduced into the tank and the supply amount of liquid metal sodium sent from the tank to the reaction tank 3 side. Etc.) can be measured. The storage tank 20 has a plurality of connecting portions provided on the upper surface. Among them, the gas supply means 6 and the suction means 7 are connected to the first connecting portion so as to be switchable via a common pipe 17 and an on-off valve 8c, and a part of the downstream side of the on-off valve 8c is a flexible pipe 17a. It is comprised by. The second connection portion communicates with the upper end of the outlet pipe 25 provided in the tank, and is connected to one end of the path pipe 5. The path pipe 5 has an opening / closing valve 8d interposed in the piping section on the storage tank 20 side, and a part of the downstream side of the opening / closing valve 8d is constituted by a flexible pipe 5a. The other end of the route pipe 4 described above is connected to the third connection portion via a flexible pipe 4a. For example, when the inside of the storage tank 20 is excessively pressurized by the inert gas pumped from the gas supply means 6, the fourth connection portion can appropriately exhaust the gas. In addition, the load cell 22 can measure the weight change etc. of this storage tank correctly now by connecting the storage tank 20 with corresponding piping via each flexible pipe | tube 17a, 5a, 4a. The external heater 21 may be any means that can maintain the liquid metal sodium in the storage tank 20 at a predetermined temperature.

  In the storage unit 2 described above, for example, when the inside of the drum can 10 is pressurized by the operation of the gas supply means 6 and the on-off valve 8b is opened, the liquid metal sodium in the drum can 10 is stored in the storage tank 20 via the route pipe 4. Introduced in. Further, when the inside of the storage tank 20 is pressurized with an inert gas by the gas supply means 6 and the on-off valve 8d is opened, the liquid metal sodium in the storage tank 20 passes through the path pipe 5 and the nozzle N of the reaction tank 30. Supplied to. The reason why the liquid metal sodium is not transferred by the pump is that an oxide or the like of metal sodium accumulates on the uneven portion of the mechanism portion and easily breaks down. Although the route pipes 4 and 5 are not shown in the figure, heating means such as a ribbon heater or a heat retaining process is actually performed so that the liquid metal sodium does not solidify. Such route pipes 4 and 5 are processed so as to prevent the accumulation of metallic sodium by forming the passage as smooth as possible or setting a gradient in the pipe.

  For example, the reaction processing unit 3 stores a solution of alcohol or the like in the reaction tank 30 in advance, and sprays liquid metal sodium in the storage tank 20 through the outlet pipe 25, the path pipe 5, and the nozzle N into the solution. This is the place to react. The reaction tank 30 is heated by a heater or a heat medium jacket 31, and has a plurality of nozzles N, agitation means 35, and a plurality of connection portions provided on the tank upper surface and the tank lower surface. Among the plurality of connection portions, on the tank upper surface side, the gas supply means 6 and the suction means 7 are switchably connected to the first connection portion via a common pipe 18 and an on-off valve 8e. For example, when the inside of the reaction vessel 30 is excessively pressurized by the inert gas pumped from the gas supply means 6, the second connection portion can appropriately exhaust the gas, or can be used for liquid metal sodium and TBA. The hydrogen gas in the reaction exhaust gas can be detected. A supply pipe or the like for injecting an alcohol solution or a cleaning solution into the reaction tank 30 is connected to the third connection portion (not shown). On the tank lower surface side, a discharge pipe 19 is connected to the fourth connecting portion, and a solution (such as sodium alcoholate which is a reaction product) in the reaction tank can be taken out via an on-off valve 8h attached to the discharge pipe 19. it can.

  The stirring means 35 is attached to the rotary shaft 36 and a rotary shaft 36 disposed in the vertical direction of the center of the tank while supporting the upper end of the shaft with respect to a drive unit such as a motor installed at a substantially central portion of the upper surface of the tank. And a stirring blade 37. The plurality of nozzles N are arranged substantially concentrically with the rotating shaft 36 and are connected to the other end side of the path pipe 5 so as to be switchable via, for example, branch pipes 5b and on-off valves 8f and 8g. That is, in this example, when the nozzle N being used is closed, the operation can be switched to another nozzle N by operating the on-off valve so that the reaction can be continued without being stopped or stopped. Moreover, each nozzle N is installed so that it may not touch a tank internal peripheral surface and the rotating shaft 36 as much as possible, when liquid metal sodium is sprayed. In the production of sodium alcoholate, it is preferable to heat the nozzle itself because the temperature in the tank is below the melting temperature of metal sodium (about 98 ° C.), but in the tank, the nozzle is heated as such. Therefore, the nozzle is prevented from protruding into the reaction tank as much as possible, or is prevented from coming into contact with the atmosphere in the tank to suppress the temperature drop at the nozzle tip side.

  2A and 2B show the nozzles N used in sample numbers 4 and 5 of the example, wherein FIG. 2A is a top view, FIG. 2B is a side view, and FIG. 2C is along the AA line of FIG. FIG. Each nozzle N has, for example, a substantially X-shaped waller 13 in which the main body 12 is fitted, among the so-called full-cone nozzles, and fine particles while turning liquid metal sodium through the waller 13 and the like. It is the structure which can be sprayed in a full conical state from the lower body side. The main body 12 includes a connecting portion 12a forming a female screw, a suction port (actually, a gap between the connecting portion 12a and the waller chamber 12c) 12b, and a waller into which the warler 13 is inserted from the top to the bottom. The chamber 12c, the whirling chamber 12d, the contracted chamber 12e, and the discharge port 12f are formed in this order, and are attached to the end portions of the path pipe 5 and the branch pipe 5b through screwing of the connecting portion 12a. The waller 13 allows the blades 13a and 13b made of a pair of flat plates (substantially semi-elliptical flat plates) to have tolerances to the X shape of the linear peripheral surfaces of the blades 13a and 13b, and the four triangular openings constituting the X shape. Among them, the shape of one opening is closed, and the bottom of the closed triangle is fitted into the waller chamber 12c so as to be a partition wall that bisects the suction port 12b side of the main body 12. Reference numerals 13c and 13d are grooves that are recessed in the linear circumferential surfaces of the blades 13a and 13b and are cut from the linear circumferential surface toward the curved circumferential surface. The nozzle N described above is substantially the same as the nozzle structure described in, for example, Japanese Patent Laid-Open No. 4-32695. Refer to the same publication for details.

  The above spraying apparatus is suitable for generating sodium alcoholate by spraying, for example, liquid metal sodium obtained by melting solid metal sodium from the nozzle N attached to the upper part of the tank to the alcohol stored in the reaction tank 30. It is. In terms of operation, the atmosphere replacement step in which the atmosphere in which the sodium metal is present is replaced with an inert gas, and the solid metal sodium is melted in the drum 10 in the melting section 1 to form liquid metal sodium in the first supply path 4. From the second supply path 5 to a predetermined nozzle N, and the liquid metal sodium is swirled by the nozzle N. A spraying step of making fine particles and spraying in a full conical state from the lower discharge port 12f and a stirring step of stirring the alcohol solution in the tank and the sprayed liquid metal sodium by the stirring means 35 to complete the reaction. . Hereinafter, the usefulness of the present invention will be clarified by giving examples.

This example is an example when sodium alcoholate is produced under the same conditions as much as possible except that the same spraying apparatus as described above is used and the type of nozzle used is changed to the following (a) to (e). A pressure (MPa in Table 1) was set so that a predetermined amount (125 kg) was sprayed from each nozzle as much as possible, and was dropped into TBA (6630 kg) in the reaction vessel, and a stirring reaction was performed under the same conditions. . And it evaluated by investigating the supply amount-dripping time of the liquid metal sodium shown in FIG. 3, the presence or absence of the nozzle blockage summarized in Table 1, and the production time of sodium alcoholate. The stirring reaction means that liquid metal sodium is added to TBA and stirred to accelerate the reaction to produce sodium alcoholate.
(A) The nozzle of test number 1 is bead jet # 8010 (minimum hole diameter is 2.0 mm) manufactured by Spraying Systems Japan Co., Ltd. as Comparative Example 1 of the straight type.
(B) The nozzle of test number 2 is Bejet # 8030 (minimum hole diameter is 3.6 mm) manufactured by Spraying Systems Japan, Inc. as Comparative Example 2 of the straight type.
(C) The nozzle of test number 3 is a nozzle produced for testing as Comparative Example 3 of the straight type, and has an outer diameter of 9.5 mm, a length of 46 mm, and a substantially cylindrical nozzle (minimum hole diameter of 5.7 mm). ).
(D) The nozzle of test number 4 is JJXP20 (foreign object passage diameter is 1.5 mm) manufactured by Ikeuchi Co., Ltd. as Example 1 of a full cone type.
(E) The nozzle of the test number 5 is JJXP70 (foreign substance passage diameter is 2.6 mm) manufactured by Ikeuchi Co., Ltd. as Example 2 of a full cone type.

  The sodium alcoholate was produced by first heating the drum 10 containing solid metal sodium to 120 to 130 ° C. with the band heater 11 to completely melt the solid metal sodium. The storage tank 20 replaces the atmosphere in the tank with an inert gas (nitrogen gas) by the gas supply means 6 and then pressurizes the inside of the drum can 10 with the inert gas as described above, thereby liquid sodium sodium in the drum can 10. A predetermined amount of was introduced.

  On the other hand, the reaction tank 30 weighs TBA in advance and accommodates only 6630 kg, and while heating and maintaining at 80 ° C. with stirring by the stirring means 35, the gas supply means 6 makes the atmosphere in the tank inert gas (nitrogen gas). ). From that state, liquid metal sodium (125 kg) in the storage tank 20 was supplied to a nozzle (nozzles with test numbers 1 to 5) provided in the upper part of the reaction tank 30 and dropped from the nozzle. Specifically, in FIG. 1, the on-off valve 8c is opened, the inside of the storage tank 20 is pressurized with an inert gas to a predetermined pressure by the gas supply means 6, and the on-off valve 8d is maintained while maintaining the applied pressure. In an open state, liquid metal sodium in the storage tank 20 is supplied to the nozzle of the reaction tank 30 (nozzles of test numbers 1 to 5) via the path pipe 5 and the on-off valve 8g, and directed from the nozzle toward the TBA in the tank And dripped. In this operation, the conditions such as driving of the stirring means 35 and temperature were made the same as possible for each nozzle of the sample numbers 1 to 5. As described above, when liquid metal sodium was dropped into TBA, the solution in the tank rose to 82.5 ° C. due to reaction heat. In the operation, nitrogen gas was supplied from the gas supply means 6 to the reaction vessel 30 and refluxed until no hydrogen gas in the reaction exhaust gas was detected.

(Evaluation) FIG. 3 shows metal sodium supply amount-drip time. The supply amount (drop amount) of the liquid metal sodium was measured by the load cell 22 provided in the storage tank 20, and the supply amount of the liquid metal sodium with respect to the drop time from each nozzle was plotted. From FIG. 3, in both test numbers 1 and 2 (Comparative Examples 1 and 2), the nozzles were blocked and liquid metal sodium could not be supplied to the end. This is presumably because liquid metal sodium stays in the nozzle until it is supplied to the nozzle and ejected from the discharge port, solidifying due to a temperature drop, accumulation of impurities, or oxide due to an oxidation reaction. Test No. 3 (Comparative Example 3) had a large minimum pore size and liquid metal sodium did not stagnate in the nozzle, so it did not clog, but liquid metal sodium was injected in the form of a straight bar to ensure contact area with TBA. As a result, as shown in Table 1, it took time for the reaction under reflux after dropping to take about 21 hours as sodium alcoholate production time (dropping time 0.1 + stirring reaction time 21). Compared to this, in Test No. 4 (Example 1), the nozzle was not clogged, and 125 kg of the total amount could be supplied. Completed in time. Test No. 5 (Example 2) was able to supply the whole amount of 125 kg, and was completed in about 15 hours as sodium alcoholate production time (drop time 0.3 + stirring reaction time 15). As described above, when sodium alcoholate is produced by adding liquid metal sodium to TBA, the dropping state of liquid metal sodium with respect to TBA greatly affects the production or reaction efficiency, and test numbers 4 and 5 (Example 1). It was found that using the nozzles 2) and 2) can be shortened by about 6 to 7 hours compared to test number 3 (Comparative Example 3).

(Table 1)

  It should be noted that the present invention is not limited to the above forms and examples, and only needs to satisfy the requirements specified in the claims, and the details can be variously modified or developed with reference to the above specific examples. Is.

It is a schematic diagram which shows the whole apparatus of this invention. It is a schematic diagram which shows the nozzle of FIG. It is a graph which shows the supply amount (kg) of liquid metal sodium-dripping time (minutes).

1 ... Melting part (10 is a drum, 11 is a heater)
2 ... storage part (20 is a storage tank, 21 is a heater)
3 ... Reaction processing section (30 is a reaction tank, 31 is a heating medium jacket)
4. Route piping (first supply route)
5. Route piping (second supply route)
6 ... Inert gas supply means 7 ... Suction means 8a to 8h ... Open / close valve 35 ... Stirring means (36 is a rotating shaft, 37 is a stirring blade)
N ... Nozzle (12 is the main body, 13 is the waller)

Claims (2)

In a metal sodium spraying apparatus for spraying liquid metal sodium obtained by melting solid metal sodium into a solution contained in a reaction tank from a nozzle attached to the upper part of the tank,
A melting part for heating and melting solid metal sodium, a storage part capable of introducing liquid metal sodium melted in the melting part via a first supply path, and a second supply path for supplying a predetermined amount of liquid metal sodium from the storage part The reaction tank that can be introduced via the nozzle, and the nozzle that is provided in the reaction tank and is connected to the second supply path to inject the liquid metal sodium toward the solution in the reaction tank And an inert gas supply means for sending an inert gas to each of the parts,
A stirring means having a rotating shaft in which the reaction tank is arranged substantially in the vertical direction, and a stirring blade attached to the rotating shaft, and the second supply path provided as the nozzle substantially concentrically with the rotating shaft. Two or more nozzles connected to each other in a switchable manner ,
The nozzle is a full-cone nozzle having a main body in which a suction port, a waller chamber, a whirling chamber, and a discharge port are formed in this order, and a waller fitted in the waller chamber of the main body , and is supplied from the main body suction port. The metallic sodium spraying device is characterized in that the liquid metallic sodium is turned into fine particles while being swirled through the waller and sprayed from a main body discharge port. In the method for spraying metallic sodium, the liquid metallic sodium in which solid metallic sodium is melted is sprayed from a nozzle attached to the upper part of the tank into the solution contained in the reaction tank.
Using the spray device according to claim 1,
An atmosphere replacement step of substituting an inert gas for the atmosphere in which the metallic sodium exists;
Melting and supplying solid metal sodium in the melting part, and supplying the storage part from the first supply path as liquid metal sodium,
The reaction temperature of the solution is maintained below the melting temperature of the metallic sodium, the liquid metallic sodium in the reservoir is supplied from the second supply path to the nozzle, and the liquid metallic sodium is swirled by the nozzle to form fine particles. And a spraying step of spraying while forming a uniform flow distribution with a substantially circular cross section as a spray shape from the lower discharge port.

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