JP3355019B2 - Excited oxygen generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jet type excited oxygen generator for efficiently generating excited oxygen by bringing an aqueous solution of alkaline hydrogen peroxide into contact with chlorine gas to cause a chemical reaction, and a method of operating the same. It is.

[0002]

2. Description of the Related Art In recent years, chemically excited oxygen iodine lasers (ch
electronic oxygen iodine case
r: COIL) and succeeded in high-power laser oscillation at a wavelength of 1.315 μm. This COIL has an advantage that it does not require electric energy as a pumping source for laser oscillation and can be laser-oscillated with a chemical substance and has a relatively simple structure.

The basic principle of COIL is described, for example, in Sov.
J. Quantum Electron. 21 (7) J
uly 1991, pp. 747-753, "High.
lyefficient jetO ₂ ( ¹ Δ) gene
The energy transfer reaction according to the following equation 1 is described as described in “Rator”.

[0004]

(Equation 1)

[0005] For fast reaction from the left side in Equation 1 to the right side, effectively pumping is performed I ^{* (2} P _1/2) is generated. The I ^{* (2} P _1/2) is the laser medium, as Equation 2 below by stimulated emission, to generate a laser beam having a wavelength of 1.315μm.

[0006]

(Equation 2)

[0007] Here, the most important thing, O ₂ ^* a pumping source ⁽¹ delta) how efficiently and is either is generated at high pressure. The most efficient method known at present is a decomposition reaction of hydrogen peroxide represented by the following equation (3).

[0008]

(Equation 3)

[0009] in terms of the alkaline aqueous sodium hydroxide in a high concentration aqueous hydrogen peroxide solution, O ₂ ^{* (1} Δ) by contacting the reaction with the mixed solution and the chlorine gas is easily generated.

[0010]

However, the above-mentioned conventional method cannot provide sufficient excitation oxygen generation efficiency, and a more efficient excitation oxygen generator has been demanded. Further, in a chemically excited oxygen iodine laser device provided with an excited oxygen generator, it has been desired that the gas be supersonic and the operating pressure be increased in order to increase the output and make the device compact. The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a jet-type excited oxygen generator that generates an excited oxygen by contacting an alkaline aqueous hydrogen peroxide solution with a chlorine gas to generate an excited oxygen at a higher pressure. It is an object of the present invention to provide a jet-type oxygen generator and a method of operating the jet-type oxygen generator, in which the generation efficiency of gas is improved, and the supersonic velocity of the gas and the size of the apparatus can be reduced.

[0011]

In order to achieve the above object, an excited oxygen generator of the present invention ejects an aqueous alkaline hydrogen peroxide solution in an oxygen generation chamber from a number of jet nozzles provided on a nozzle plate. In a jet-type excited oxygen generator in which chlorine gas is contact-reacted with this liquid to generate excited oxygen, the value σ of the gas-liquid contact area S / oxygen generation chamber volume V is σ> 3 [1 / cm Arrange the jet nozzles so that
Connected to vibrate or swing the nozzle plate
It is characterized in that the. In addition, in combination with a supersonic nozzle, it is preferable that σ> 10 [1 / cm]. In the case of σ ≦ 3, the operating pressure in the oxygen generation chamber becomes 20 Torr or less, as described later with reference to FIG. 3, and it becomes difficult to make the gas supersonic at the supersonic iodine laser and to make the apparatus compact.

The casings of the oxygen generation chamber and the aqueous solution storage chamber are preferably provided with a cooling jacket. Further, the excited oxygen generator of the present invention is provided with an alkali in the oxygen generation chamber.
Aqueous hydrogen peroxide solution on the nozzle plate
Jet from several jet nozzles and contact chlorine gas with this liquid.
Jet that reacts to generate excited oxygen
In type excited oxygen generator, the gas-liquid contact area S / oxygen generator
The value σ of the room volume V is set so that σ> 3 [1 / cm].
Arranging Ettonozuru, the two nozzle plates was slidably overlapped, by connecting the drive means to one of the nozzle plate, that it has to slide the nozzle plate
Features.

Further, the jet nozzle is a tubular, preferably be lower ends of the tubular jet nozzle is configured to be located below the gas outlet opening height of the oxygen generating chamber
No. Further, the excited oxygen generator of the present invention is provided in the oxygen generation chamber.
Alkaline hydrogen peroxide solution is provided on the nozzle plate
Jets from a large number of jet nozzles
A catalyst that generates excited oxygen by a catalytic reaction
In jet type excited oxygen generator, the gas-liquid contact area S / acid
The value σ of the element generation chamber volume V becomes σ> 3 [1 / cm]
The jet nozzles are arranged as described above, and a liquid laminar flow screen forming means is provided on the gas outlet side of the nozzle plate so that a liquid laminar flow screen is formed near the gas outlet in the oxygen generation chamber . In this case, the liquid laminar flow screen forming means includes at least disposing the nozzles densely, increasing the nozzle diameter, and providing a pressure drop porous member between the jet nozzle and the screen nozzle on the upper surface of the nozzle plate. It is formed by one means.

The method for operating the excited oxygen generator according to the present invention is a jet type excited oxygen generating method in which an aqueous alkaline hydrogen peroxide solution is jetted from a number of jet nozzles and a chlorine gas is brought into contact with the liquid to generate excited oxygen. In the above, a reaction inhibitor for preventing foaming is mixed with the alkaline hydrogen peroxide aqueous solution, and the temperature of the alkaline hydrogen peroxide aqueous solution is lowered by -10.
The method is characterized by including at least one step of controlling the temperature to not more than ° C. and controlling the salt concentration in the aqueous alkaline hydrogen peroxide solution to be equal to or less than a certain level.

As the reaction inhibitor, diethylenetriaminepenta-methylenephosphonic acid 7Na salt or the like is used. By adding the reaction inhibitor to the aqueous solution, excessive foaming during operation can be suppressed. In addition, by operating the aqueous solution at a temperature of -10 ° C or lower, generation of water vapor can be reduced, and the excitation rate (O ₂ ^* / O ₂ ) can be improved and adverse effects of the water vapor on the downstream can be reduced. FIG.
Shows the relationship between the temperature of the aqueous alkaline hydrogen peroxide solution and the saturated vapor pressure. FIG. 8 shows that when the temperature of the aqueous solution is -10 ° C. or lower, the saturated vapor pressure becomes 1.0 Torr or lower, and the generation of water vapor is extremely reduced. In addition, when the alkaline hydrogen peroxide aqueous solution is circulated and used, by maintaining salts (NaCl, KCl, etc.) generated during operation at a certain level or less, laser oscillation can be performed for a long time.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. However, the shapes of the components described in this embodiment, the relative arrangement thereof, and the like are not intended to limit the scope of the present invention to only them, unless otherwise specified, and are merely illustrative examples. It's just Embodiment 1 FIGS. 1 and 2 show an embodiment of the excited oxygen generator of the present invention. Reference numeral 10 denotes an excited oxygen generation chamber, which ejects an aqueous alkaline hydrogen peroxide solution supplied to the generation chamber 10 from a number of jet nozzles 14 provided on a nozzle plate 12, and makes the liquid column contact and react with chlorine gas for excitation. It generates oxygen. Reference numeral 16 denotes an excited oxygen outlet, and reference numeral 18 denotes an aqueous solution storage chamber.

In the jet-type excited oxygen generator described above, as shown in FIGS. 1 and 2, the diameter of the jet nozzle 14 is dcm, the number of the jet nozzles 14 is n,
Assuming that the height between the chlorine inlet and the excited oxygen outlet is 0 cm and the cross-sectional area of the generation chamber 10 is Acm ² , the gas-liquid contact area S
= NπdL and the generation chamber volume V = AL. And in the excited oxygen generator of the present invention, σ = S / V = nπd
The jet nozzle 14 is laid out so that L / AL> 3 [1 / cm]. FIG. 3 shows the above σ (= S / V)
The curve of the relationship (P = 12√σ) between the pressure and the generated indoor operating pressure P is experimentally shown. However, the excitation rate (O ₂ ^* /
O ₂ ) is 50%. In a chemically excited oxygen iodine laser device equipped with a jet-type excited oxygen generator,
In order to make the gas containing excited oxygen supersonic and to make the apparatus compact, the pressure in the generation chamber needs to be P> 20 Torr, and for this purpose, σ> 3. σ
By setting> 3, the pressure in the oxygen generation chamber 10 can be further increased.

As shown in FIG. 1, the casings of the oxygen generation chamber 10 and the aqueous solution storage chamber 18 are provided with a cooling jacket 2.
0 is provided. As the refrigerant, for example, alcohols such as trichloroethylene and methanol, and a substitute for CFCs are used. In the jet-type excited oxygen generator, the liquid is hardly cooled by heat of vaporization due to high-pressure operation. For this reason, the temperature of the liquid adhering to the inner wall may increase. In this case, cooling is performed to prevent evaporation of water from the wall, and a refrigerant at -10 to -20C is used.

Embodiment 2 In this embodiment, as shown in FIG. 4, for example, a vibration means 26 combining a motor 22 and a cam 24 is connected to the nozzle plate 12 to vibrate or swing the nozzle plate 12. It is like that. By vibrating or oscillating the nozzle plate 12, the flow of the liquid ejected from the jet nozzle 14 is disturbed, and the contact between the liquid and the chlorine gas is promoted, thereby increasing σ (= S / V). Higher pressure can be achieved. Other configurations are the same as those in the first embodiment.

Embodiment 3 In this embodiment, as shown in FIG. 5, two nozzle plates 12a and 12b are slidably overlapped, and a motor 22 and a cam 24 are mounted on one of the nozzle plates 12a. The combined driving means 28 is connected to slide one nozzle plate 12a. 30
Is a sealing material. Thus, the nozzle plate 12
a, 12b are overlapped, and one of them is slid, for example, by a half pitch to break the liquid column 32 ejected from the jet nozzle 14, thereby increasing the value of σ (= S / V), thereby increasing the pressure. Can be planned. Other configurations are the same as those in the first embodiment.

Embodiment 4 In this embodiment, as shown in FIG. 6, a jet nozzle is inserted into a hole of the nozzle plate 12 as a tubular jet nozzle 34, and the lower ends of these tubular jet nozzles 34 are excited in the oxygen generation chamber 10. The oxygen outlet 16 is located below the opening height (the lower surface of the outlet 16). As described above, the excited oxygen outlet 1 is provided by the plurality of tubular jet nozzles 34.
6, the droplets flying on the gas adhere to the tubular jet nozzle 34 and flow down. That is, a splash screen is formed. Other configurations are the same as those in the first embodiment.

Embodiment 5 In this embodiment, as shown in FIG. 7, a liquid laminar flow screen is formed near the excited oxygen outlet 16 in the oxygen generator 10 so that the nozzle plate 12 is located on the excited oxygen outlet 16 side. Provided with a liquid laminar flow screen forming means. As a liquid laminar flow screen forming means, for example, as shown in FIG. 7, a pressure drop porous member 38 is provided in an aqueous solution chamber 36 between the jet nozzle 14 and the screen nozzle 40 on the upper surface of the nozzle plate 12. Porous member 38
Screen nozzle 40 on the downstream side (excited oxygen outlet side)
Of the liquid laminar flow screen 4 by increasing the number per unit area of the upstream jet nozzles 14 per unit area.
2 is formed. Instead of the configuration of the liquid laminar flow screen shown in FIG. 7, it is also possible to adopt a means such as arranging the screen nozzles 40 densely or increasing the diameter of the screen nozzles 40. As described above, by disposing the screen nozzles 40 at the gas outlets of the nozzle plate 12, for example, by disposing the screen nozzles 40 densely at the gas outlets, the liquid flow is maintained in a laminar flow, and the generation of droplets is prevented. An unreacted liquid column (liquid laminar flow screen 42) can be created, and the droplets generated in the oxygen generation chamber 10 can be captured in the liquid column and unreacted chlorine can be reduced. The liquid column capturing the droplets flows down into the aqueous solution along the lower inclined wall 44. Another configuration is the first embodiment.
Is the same as

[0023]

As described above, the present invention has the following effects. (1) In the jet-type excited oxygen generator, since the jet nozzles are arranged so that σ (= S / V)> 3, even when the pressure inside the oxygen generator is high, the excitation rate (O ₂ ^*
/ O ₂ ) can be kept large, and the supersonic velocity of the gas and the compactness of the chemically excited iodine laser device incorporating this excited oxygen generator can be achieved.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an example of a jet-type excited oxygen generator of the present invention.

FIG. 2 is a partially cutaway perspective view around a nozzle plate and an oxygen generation chamber in FIG. 1;

FIG. 3 shows σ (= S / S) at a constant excitation rate in the present invention.
It is a graph which shows the relationship between V) and the operating pressure in an oxygen generation chamber.

FIG. 4 is an explanatory sectional view showing another embodiment of the present invention.

FIG. 5 is an explanatory sectional view showing another embodiment of the present invention.

FIG. 6 is an explanatory sectional view showing another embodiment of the present invention.

FIG. 7 is an explanatory sectional view showing still another embodiment of the present invention.

FIG. 8 is a graph showing the relationship between the temperature of an aqueous solution of alkaline hydrogen peroxide and the saturated vapor pressure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Excited oxygen generation chamber 12 Nozzle plate 14 Jet nozzle 16 Excited oxygen outlet 18 Aqueous solution storage chamber 20 Cooling jacket 22 Motor 24 Cam 26 Vibration means 28 Driving means 30 Seal material 32 Liquid column 34 Tubular jet nozzle 36 Aqueous solution chamber 38 Pressure drop Porous member 40 Screen nozzle 42 Liquid laminar flow screen 44 Inclined wall

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor: Takehiro Nakabayashi 3-1-1, Higashikawasaki-cho, Chuo-ku, Kobe Kawasaki Heavy Industries, Ltd. Kobe Plant (56) References Zagidulin M. V. , "Highly efficient jet 02 (1Δ) generator", Sov. J. Quantum Electron. , Vol. 21, No. 7, p. 747-753. Zagidulin M.C. V. et al. , "Anoxygen-io Dine Laser Utility Utiliznga high-Pressure 02 (1Δ) generator", Sov. J. Quantum Electron. , Vol. 21, No. 12, p.p. 1303-1304. Azyazov. N. et al. , "Jet 02 (1Δ) generator with oxygen pressure up to 13.3 kPa", Quantum Electronics electronics, Vol. 24, No. 2, pp. 120-123. (58) Field surveyed (Int. Cl. ⁷ , DB name) H01S 3/00-3/30

Claims (4)

(57) [Claims] 1. An alkaline hydrogen peroxide solution in an oxygen generation chamber.
A large number of jet nozzles provided on the nozzle plate
And excites it by contacting chlorine gas with this liquid.
Jet-type excited oxygen generator for generating oxygen
, The value of gas-liquid contact area (S) / oxygen generating chamber volume (V)
Jet nozzle so that (σ) becomes σ> 3 [1 / cm]
Arranging Le, by connecting the vibrating means to the nozzle plate, excitation oxygen generator you, characterized in that the nozzle plate was set to vibrate or swing. 2. An alkaline hydrogen peroxide solution in an oxygen generation chamber.
A large number of jet nozzles provided on the nozzle plate
And excites it by contacting chlorine gas with this liquid.
Jet-type excited oxygen generator for generating oxygen
, The value of gas-liquid contact area (S) / oxygen generating chamber volume (V)
Jet nozzle so that (σ) becomes σ> 3 [1 / cm]
Arranging Le, the two nozzle plates was slidably overlapped, by connecting the drive means to one of the nozzle plate, excitation oxygen generator you characterized in that so as to slide the nozzle plate . 3. An alkaline hydrogen peroxide solution in an oxygen generation chamber.
A large number of jet nozzles provided on the nozzle plate
And excites it by contacting chlorine gas with this liquid.
Jet-type excited oxygen generator for generating oxygen
, The value of gas-liquid contact area (S) / oxygen generating chamber volume (V)
Jet nozzle so that (σ) becomes σ> 3 [1 / cm]
Arranging Le, as liquid laminar flow screen near the gas outlet of the oxygen generating chamber is formed, excitation oxygen you characterized in that a liquid layer flow screen forming means on the gas outlet side of the nozzle plate Generator. 4. A liquid laminar flow screen forming means, wherein nozzles are densely arranged, a nozzle diameter is increased, and a porous member for reducing pressure is provided between a jet nozzle and a screen nozzle on an upper surface of a nozzle plate. The excited oxygen generator according to claim 3 , wherein the excited oxygen generator is formed by at least one of the following .