JPS6410258B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention utilizes granules, dispersions, or alkoxides of metal or nonmetallic elements or carbon-containing substances as a starting material powder, and sprays this into a reaction chamber whose pressure is adjusted to form a spray. A method for producing a desired metal compound or carbon composition by irradiating a powdered raw material with laser or microwave reaction energy to cause a chemical reaction between the starting material components or between the powder and a reactive gas. .

BACKGROUND OF THE INVENTION Mixing or mutually adding starting materials and reacting them under desired conditions has been proposed and commonly used as a method for forming various compounds or compositions. It has been proposed to react solid powders or solid particles suspended in a gas as a starting material in an electromagnetic field maintained under the required conditions, but this is still only applicable in special cases. . This is probably because a simple method that corresponds to the desired product is not known or an economical method has not yet been achieved. Furthermore, there is no method available for producing uniform products of high quality. In view of these current circumstances, the present invention aims to carry out a continuous reaction by ejecting starting material powder or dispersion or alkoxide into a reaction gas controlled at the required pressure in the form of fine powder from a nozzle and irradiating the required energy. The object of the present invention is to provide a method for producing metal or non-metallic compounds or graphite or graphite compositions. As the starting raw material for the reaction, solid particles, fine solid particles mixed or suspended in a required gas, solids mixed or dissolved in a liquid, alkoxides, etc. are used.

The reaction energy irradiated to these starting materials includes, for example, irradiation with a carbon dioxide laser or application of high-frequency electromagnetic waves to cause a reaction, and the reaction is controlled and maintained at a predetermined pressure in the reaction gas or medium chamber. Mixing of raw material gases to supply the necessary gases to be filled indoors by controlling the pressure of the reaction gas required to be filled indoors to obtain the production amount and keeping the indoor temperature constant. Alternatively, the reactant is generated by adjusting the supply method and determining the ejection amount of the starting raw material while adjusting the laser irradiation amount.

Next, the present invention will be explained by giving an example.

FIG. 1 is a side view showing a model in which a laser 4 is irradiated onto a raw material powder 8 and a predetermined gas ejected into a reaction chamber in a container 10. FIG. 2 is an illustration of the spout. FIG. 3 shows a curve 1A and a curve 22 showing the relationship between the indoor pressure and the amount produced when boron nitride is produced, and FIG. 4 shows the relationship between the indoor pressure and the amount produced when other similar reactions occur.

An example of FIG. 1 will be explained. Reaction vessel 1
0 chamber at a predetermined pressure. The center of the lower part of the container 10 is equipped with a jetting nozzle 7 for the starting raw material, one end of the lower part of the container 10 is equipped with a gas supply device 12 for supplying a reaction gas or medium gas C, and one end of the upper part is equipped with a gas supply device 12 for supplying the reaction gas or medium gas C. A separation device 11 for separating a gas-solid mixture product G containing gas and fine powder during product production while extracting it, for example, includes a cyclone and a bag filter, and a connecting duct 9 are provided.
Reference numeral 2 denotes a laser oscillator, which introduces a laser beam through a window of a container 10, focuses it 4 with a lens 3, and places it at a required position where it can appropriately irradiate the starting raw material 8 spouted in fine powder form from a nozzle 7. Provided to be adjustable.

The ejection nozzle 7 is provided with an introduction pipe 5 for the starting raw material B and a jet flow conduit pipe 6 for the fluid A that enhances the ejection.
As the ejection nozzle 7, another structural example as shown in FIG. 2 may be used as necessary. Reference numeral 13 denotes an ultrasonic vibrator that vibrates the nozzle 7 to eject and powder the starting material B. Next, examples of implementation will be explained.

Example 1 Titanium alkoxide Ti as starting material
(OMe) ₂ is supplied to the pipe 5 introduction path and is ejected from the ejection nozzle 7 in the form of fine powder. In this case, hydrocarbon gas is used as the blowout gas and is blown in from the pipe 6. The same hydrocarbon gas as the blown gas is supplied into the container 10 from the supply port 12 and filled with the required pressure. The ejected powder particles and a hydrocarbon gas such as methylene, ethylene or styrene are irradiated with a 500W carbon dioxide laser 4 as shown in FIG. Thus titanium carbide
Generate TiC grains. A separation device 11 separates gas and solid, and collects TiC from the solid.

From a series of tests of this type, it has been found that the gas pressure within the container 10 and the amount of reaction product produced are in a constant relationship curve, as shown by curve 22 in FIG.

Example 2 As starting material, coke powder is introduced through the tube 5 into the jet nozzle 7. A granular mixture of heated tar and coke powder is passed through tube 6 along with heated hydrocarbon gas.
It is blown in from the nozzle 7 and atomized. container 1
Try to maintain the required pressure within 0, ejecta 8
is irradiated with laser 4 to cause a reaction. A separator 11 separates the solid to obtain graphite.

Example 3 When the ejection part shown in Fig. 2 was replaced with the ejection part shown in Fig. 1 and ultrasonic waves were ejected, when the starting raw material of Example 2 and indoor pressure were applied, the results were good. A graphite structure was obtained.

Example 4 As in Example 3, the ejection part shown in FIG. 2 is provided.
Activated nitrogen gas and fine boron powder were supplied to the tube 5, and the ejected material 8 was irradiated with the laser 4 while the ejecting nozzle 7 was ejecting ultrasonic waves. Activated nitrogen gas was supplied into the container 10 from the supply port 12 to maintain the required pressure, and when the pressure was varied and the relationship with the amount of boron nitride produced was determined, the curve 1A was as shown in FIG. Obtained.

Example 5 In the same manner as in Example 4, silicon powder and activated nitrogen are introduced into the jet nozzle 7 through the tube 5, and are jetted into the room, and the laser 4 is irradiated onto the jet. Activated nitrogen gas is supplied from the supply port 12 to the container 10 so as to maintain a required pressure. The product in the chamber is introduced into a separation device 11 to obtain solid silicon nitride.

Example 6 The same procedure as in Example 5 was carried out using hydrocarbon gas instead of nitrogen to obtain silicon carbide. Combining Examples 4, 5, and 6, the results of these series of tests are:
A relationship curve 22 between indoor pressure and reaction products shown in FIG. 4 is obtained.

Example 7 When boron was dispersed in a hydrocarbon liquid and introduced into the jet nozzle 7 from the pipe 5, the hydrocarbon was maintained at the required pressure in the container 10, and 2568 MHz microwave was irradiated to cause a reaction. A similar trend was shown.

As described above, the present invention utilizes granules, dispersions, or alkoxides of metal or nonmetal elements or carbon-containing substances as starting raw materials in the production of metal or nonmetal compounds, graphite, or graphite compositions. , the starting raw material is sprayed in the form of fine particles from a nozzle into a reaction chamber whose pressure is adjusted as required by supplying a reaction gas or medium gas, and the sprayed raw material is irradiated with reaction energy of a laser or microwave to generate a reactant. Because of this, the effect of irradiating the reaction energy on the raw materials is improved, the reaction effect is carried out with high efficiency, and the reaction can be carried out uniformly throughout. Thereby, the desired reactant metal or nonmetal compound, graphite, or graphite composition can be easily produced with high efficiency.

[Brief explanation of drawings]

FIG. 1 is a side view of a model used in the method of the present invention.
FIG. 2 is a side view of another example of the injection section. Figures 3 and 4 are diagrams showing the relationship between reaction chamber pressure and production amount. DESCRIPTION OF SYMBOLS 10... Container, 11... Separation device, 12... Gas supply part, 2... Laser oscillator, 3... Lens, 4... Laser, 5, 6... Conduit, 7... Ejection nozzle, 8... Ejected material, 13... Ultrasonic vibrator , 1A, 22...Relationship curve between pressure and reaction product, A...Reaction gas or medium gas, B...Starting raw material, C...Reaction gas or medium gas.

Claims (1)

[Claims] 1 A container forming a chemical reaction chamber is provided, a gas supply device supplies a reaction gas or a medium gas to the reaction chamber in the container to maintain the pressure of the reaction chamber at a required pressure, and a nozzle opens into the reaction chamber. A raw material supply device that jets and introduces the material, an energy irradiation device that irradiates the raw material that is jetted and introduced from the nozzle with reaction energy of a laser or microwave, and a reaction product in the reaction chamber that is extracted and separated into products. In products that are produced by an apparatus equipped with a separation device, particles or dispersions or alkoxides of metal or nonmetallic elements or carbon-containing substances are used as starting materials, and the starting materials are combined with a reaction gas or medium. While spraying fine powder from the nozzle into the reaction chamber whose pressure has been adjusted to the required pressure by supplying gas, the sprayed raw material is irradiated with the energy to generate a reactant, and the generated reactant is led to an outdoor separation device. 1. A method for producing a metal or nonmetal compound, graphite, or graphite composition, characterized in that a required metal or nonmetal compound, graphite, or graphite composition is separated.