JPH0614567B2 - Excited oxygen generator - Google Patents

Description

TECHNICAL FIELD The present invention relates to an apparatus for efficiently generating excited oxygen by a chemical reaction between an aqueous alkaline hydrogen peroxide solution and chlorine gas.

[Prior art] Recently, chemically pumped iodine laser
laser: CPIL) has been researched and succeeded in high power laser oscillation of 1.315 μm wavelength. This CPIL has an advantage that it does not require electric energy as a pumping source for laser oscillation and can relatively easily oscillate with a chemical fuel and has a relatively simple structure.

The basic principle of CPIL is the energy transfer reaction according to the following equation.

O ₂ ^* ( ¹ Δ) + I ( ² P _3/2 ) O ₂ ( ³ Σ) + I ^{* 2} P _1/2 ) ... (1) Since the reaction from the left side to the right side is fast in equation (1), Pumping is performed efficiently and I ^* ( ² P _1/2 ) is generated. This I ^* ( ² P _1/2 )
Serves as a laser medium to generate laser light having a wavelength of 1.315 μm. The most important thing here is the pumping source O ₂
^{* It} is how efficiently ( ¹ Δ) is generated. The most efficient method currently known is the decomposition reaction of hydrogen peroxide represented by the following formula.

H ₂ O ₃ + 2NaOH + Cl ₂ → O ₂ ^* + 2H ₂ O + 2NaCl (2) Sodium hydroxide solution is added to the aqueous hydrogen peroxide solution to make it alkaline, and chlorine gas is bubbled into this mixed solution to produce O ₂ ^* ( ¹ Δ) easily occurs. At this time
Since the liquid temperature rises due to the reaction heat of the equation (2), it is necessary to cool the reaction solution in order to efficiently generate O ₂ ^* ( ¹ Δ).

Conventionally, the oxygen generator that generates excited oxygen is 1.4 Torr
Since it is operated in a vacuum atmosphere around and at a low temperature of around -20 ° C, the oxygen generator itself was cooled with a jacket structure.

[Problems to be solved by the invention]

Therefore, the conventional oxygen generator has a disadvantage that the heat transfer area is insufficient and the cooling efficiency is extremely poor.

The present invention has been made in view of the above points, and an object thereof is to provide an excited oxygen generator capable of generating a large amount of excited oxygen over a long period of time by cooling the reaction solution outside the oxygen generator. It is a thing.

[Means for solving problems]

Explained with reference to the drawings, the excited oxygen generator of the present invention is an oxygen generator 1 that generates excited oxygen by a chemical reaction between an aqueous alkaline hydrogen peroxide solution and chlorine gas.
The solution withdrawal pipe 3 of this oxygen generator is connected to the upper part of the oxygen generator to form a solution circulation line 6, and a new alkaline hydrogen peroxide aqueous solution supply pipe 11 is connected to this solution circulation line and the solution circulation line is also connected. Further, a cooling device 8 for cooling the reaction solution outside the oxygen generator is provided.

[Action]

The alkaline hydrogen peroxide solution supplied into the oxygen generator 1 and chlorine gas come into contact with each other, and excited oxygen is generated according to the above reaction formula (2). The reaction solution extracted from the oxygen generator 1 is cooled to a predetermined temperature by the refrigerant in the cooler 8, and then the temperature is adjusted and circulated to the oxygen generator 1.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. However, the shape of the constituent devices described in this embodiment, the relative arrangement thereof, and the like, unless otherwise specified, are not intended to limit the scope of the present invention only to them, and are merely illustrative examples. Only.

Reference numeral 1 is an oxygen generator for carrying out the above reaction formula (2). This oxygen generator 1 has an alkaline hydrogen peroxide aqueous solution introduction pipe 2 in the upper part, a solution withdrawal pipe 3 in the lower part, a chlorine gas ejection pipe 4 (bubbler) in the liquid phase part, and an excited oxygen outlet in the gas phase part. 5 is connected.

The other end of the solution withdrawal pipe 3 is connected to the alkaline hydrogen peroxide solution introducing pipe 2 above the oxygen generator 1 to form a solution circulation line 6. 7 is a circulation pump. A cooler 8 is arranged in the solution circulation line 6 so that the reaction solution discharged from the oxygen generator 1 can be cooled by a refrigerant such as Freon.

Further, a cushion tank 10 is provided at a position near the oxygen generator inlet of the solution circulation line 6, and a new alkaline hydrogen peroxide aqueous solution supply pipe 11 is connected to this tank 10 so that the alkaline hydrogen peroxide aqueous solution having a constant concentration always generates oxygen. It can be supplied to the vessel 1. The cushion tank 10 is not always necessary, and the fresh alkaline hydrogen peroxide solution supply pipe 11 can be directly connected to the solution circulation line 6. Further, instead of the new alkaline hydrogen peroxide solution supply pipe 11, a hydrogen peroxide supply pipe, an alkali supply pipe for supplying alkali such as NaOH and KOH, and a water supply pipe may be connected.

In the excited oxygen generator configured as described above, the alkaline hydrogen peroxide solution supplied into the oxygen generator 1 and chlorine gas come into contact with each other to generate excited oxygen according to the above-mentioned reaction formula (2), and the laser is generated. It is sent to a resonator (not shown). The reaction solution extracted from the oxygen generator 1 is cooled to −10 to −30 ° C. by a cooling medium such as Freon in the cooler 8, and then the concentration of the oxygen generator 1 is adjusted by supplying a new alkaline hydrogen peroxide aqueous solution. Is circulated to.

In the above embodiment, the case where the oxygen generator is a bubbling type has been described, but it is also possible to adopt another type, for example, a structure in which an alkaline hydrogen peroxide aqueous solution is atomized and brought into contact with chlorine gas. .

(Effects of the Invention) Since the present invention is configured to cool the reaction solution outside the oxygen generator as described above, it is possible to take a sufficient heat transfer area by forming the solution withdrawal pipe into a coil shape or the like. Therefore, the cooling temperature of the reaction solution can be easily controlled, and a large amount of excited oxygen can be generated for a long time, which is an excellent effect.

[Brief description of drawings]

The drawings are explanatory views showing an example of the excited oxygen generator of the present invention. 1 ... Oxygen generator, 2 ... Alkaline hydrogen peroxide aqueous solution introduction pipe, 3 ... Solution extraction pipe, 4 ... Chlorine gas ejection pipe, 5
...... Excited oxygen outlet, 6 …… Solution circulation line, 7 …… Circulation pump, 8 …… Cooler, 10 …… Cushion tank,
11 …… New alkaline hydrogen peroxide solution supply pipe

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Hiroo Fujii Inventor Hiroo Fujii 3-1-1 Higashikawasaki-cho, Chuo-ku, Kobe-shi, Hyogo Kawasaki Heavy Industries Ltd. Kobe factory (56) Reference US Patent 4342116 (US, A) USA Patent 4653062 (US, A)

Claims (1)

[Claims] 1. An oxygen generator for generating excited oxygen by a chemical reaction between an aqueous alkaline hydrogen peroxide solution and chlorine gas, wherein a solution withdrawal pipe of the oxygen generator is connected to an upper part of the oxygen generator. And a new alkaline hydrogen peroxide aqueous solution supply pipe is connected to this solution circulation line, and a cooler for cooling the reaction solution outside the oxygen generator is provided in the solution circulation line. Generator.