JP2007071176A - Method and device for purifying combustion device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To recover combustion efficiency of a combustion device of which performance is deteriorated because soot is accumulated therein. <P>SOLUTION: Air A is filtered by a nitrogen separation film 6 to form oxygen enriched gas O<SB>R</SB>, radiation is irradiated on the oxygen enriched gas O<SB>R</SB>, and obtained activated gas G is mixed with fuel and is burned in the combustion device E to accelerate oxidation reaction. Namely, oxygen enriched gas O<SB>R</SB>receives radiation and becomes activated gas G, composition electron of contained oxygen is excited and chemical reaction activity is raised, and fuel is completely burned by the activated oxygen. Since oxygen concentration of activated gas G is high as compared to normal air, much highly activated high temperature oxygen remains in exhaust gas after combustion, and soot adhering and accumulating in a combustion chamber and an inside of an exhaust pipe is burned by the highly activated high temperature oxygen and is removed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention restores the combustion efficiency of various combustion devices (boilers, industrial furnaces, engines, etc.) whose performance has deteriorated due to the deposition and deposition of soot in the combustion chamber and exhaust pipe, and reduces the amount of harmful substances discharged The present invention relates to a combustion apparatus purification method and apparatus.

Conventionally, heat equipment that uses generated heat, such as boilers and various industrial furnaces, and heat engines that use thermodynamic energy as power, such as engines (in the claims and specifications of this application, Combining the heat facility and the heat engine, it is called a combustion device), and heat is obtained by burning fuel such as petroleum.
Combustion is a phenomenon in which oxygen and fuel in the air combine to emit heat and light. The theoretical minimum air amount required for complete combustion is called the theoretical air amount. This theoretical air amount and the air used for actual combustion The ratio of the quantity is called the air ratio. In normal combustion control, in order to prevent incomplete combustion, a state where the air ratio is 1.0 or more, that is, excess air is supplied and burned.

We do not conduct prior art searches at the research and development stage or application stage, and do not know the prior art documents to be described.

However, no matter how much excess air is supplied, complete combustion is impossible, and carbon monoxide CO and hydrocarbon HC in the exhaust gas cannot be completely eliminated. As the years of use of the combustion equipment elapse, soot deposits and accumulates inside the combustion chamber and exhaust pipe, which gradually reduces the combustion efficiency and the amount of harmful substances remaining in the exhaust gas after combustion. It gradually increased.

In view of the above problems, the present invention produces an oxygen-enriched gas by filtering air through a nitrogen separation membrane, irradiates the oxygen-enriched gas with radiation, and mixes the obtained activated gas and fuel. Thus, the above problem is solved by accelerating the oxidation reaction.
That is, the oxygen-enriched gas receives radiation and becomes an activated gas, and the contained oxygen excites constituent electrons to increase the chemical reaction activity, and the activated oxygen completely burns the fuel.
Further, since the activated gas has a higher oxygen concentration than that of normal air, a large amount of highly active oxygen remains in the exhaust gas after combustion. And soot that is deposited and deposited inside the exhaust pipe is also burned and removed.

In short, the present invention is equipped with a gas supply device that generates and sends oxygen-enriched gas by filtering air through a nitrogen separation membrane, so that more oxygen can be fed into the combustion device.
In addition, since the gas supply path is connected to the oxygen-enriched gas delivery port of the gas supply apparatus and the radioactive substance is disposed in the gas supply path, the chemical reaction activity is high by irradiating the oxygen-enriched gas with radiation. Activated oxygen can be generated.
Then, if the activated gas containing this activated oxygen is supplied to a used combustion device that has been worn out, the predetermined fuel can be completely burned, and surplus in the exhaust gas that has been heated to high temperature by the combustion heat. The activated oxygen can burn out the soot accumulated in the gas discharge path of the combustion apparatus, and the performance of the combustion apparatus can be recovered as if it were new.

A radioactive material is fixed to the sheet material to form a purification material, and the purification material is attached to at least a part of the gas supply path, or a plastic material is mixed with a radioactive material to prepare a purification material. At least a part of the gas supply path is formed, and a radioactive substance is disposed in the gas supply path, or a purification material is prepared by blending a radioactive substance into the paint, and the purification material is added to at least one of the gas supply paths. Since the radioactive material is disposed on the gas supply path and the radioactive material is arranged uniformly around the gas supply path, the oxygen contained in the oxygen-enriched gas can be activated more efficiently. Therefore, the practical effect such as being able to improve the cleaning ability by activated oxygen is significant.

An embodiment of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1-2, purification apparatus for a combustion apparatus according to the present invention, a gas supply apparatus 1 that generates and sends the oxygen-enriched gas O _R, the gas supply apparatus 1 of the oxygen-enriched gas outlet 2 The gas supply path 3 connected to the gas supply path 3 is provided with a purification material 5 containing a radioactive substance 4 disposed in the gas supply path 3, and the activated gas G discharged from the downstream end of the gas supply path 3 is combusted. The apparatus E is supplied to the apparatus E.

Gas supply device 1 comprises a nitrogen separation membrane 6, the nitrogen separation membrane 6, the air is filtered to produce oxygen-enriched gas O _R.
Examples of the nitrogen separation membrane 6 include a hollow fiber membrane made of polyimide (see FIG. 3), and a “UBE N ₂ separator” commercially available from Ube Industries, Ltd., which is modularized using a plurality of hollow fiber membranes, is used. You may do it.
As shown in FIG. 4, this module is provided with inner lids 8 and 8a at both inner ends of the cylindrical body 7. One inner lid 8 is provided with air A inflow ports 9, 9a, and the other inner lid 8a. The nitrogen-enriched gas N _R outlet 10
, 10a... And a plurality of hollow fiber-shaped nitrogen separation membranes 6 are accommodated between the inner lids 8 and 8a in the cylindrical body 7, and one end of each nitrogen separation membrane 6 is connected to the inflow ports 9, 9a. to one, connect the other end of the nitrogen separation membrane 6 the outlet 10, 10a ..., the discharge port of the oxygen-enriched gas O _R on the side of the cylinder 7 (upper in the drawing)
11 is provided.
Then, when a pressure feeding device (not shown in the drawing) of the air A is connected to the inlets 9, 9a, and the air A is fed, the air A flows through the nitrogen separation membrane 6, while the oxygen A in the air A flows. Most of the nitrogen in the air A passes through the nitrogen separation membrane 6 with a small amount of nitrogen, and most of the nitrogen in the air A cannot pass through the nitrogen separation membrane 6 and goes to the outlets 10, 10a. outlet 10, 10a ... nitrogen-enriched gas N _R in is the oxygen-enriched gas O _R is obtained to the discharge port 11.
Note that the air A pumping device may be installed inside the gas supply device 1 or may be externally attached, and since the nitrogen-enriched gas N _R is unnecessary, it may be released into the atmosphere.

The purifying material 5 is made of a radioactive material 4 using an adhesive 13 such as an epoxy resin on the surface of the sheet material 12.
The adhesive layer 14 is provided on the back surface, and is adhered to at least a part of the exterior of the gas supply path 3 by the adhesive layer 14.
The sheet material 12 may be any material having flexibility, and may be, for example, a metal stay, a resin film, a nonwoven fabric, or the like.
The radioactive substance 4 emits a very small amount of radiation that does not affect the human body, and examples thereof include radium and radon. Regardless of natural ores and refined products, finely divided substances are desirable.

Next, a modified example of the purification device will be described.
In the purification device of the first modified example, the radioactive material 4 is blended with the plastic raw material 15, and the obtained purification material 5 forms at least a part of the gas supply path 3. (See Figure 5)
Here, the plastic raw material 15 may be any material that can be molded into an appropriate shape, such as a thermosetting resin such as phenol resin, formaldehyde resin, urea resin, or silicon resin, polyethylene, polystyrene, polymethyl methacrylate, or the like. A thermoplastic resin is mentioned.
Further, the plastic raw material 15 may be a ceramic raw material prepared in the form of a clay, and is formed into a cylindrical shape and fired to form the gas supply path 3 or, although not shown, is formed into a spherical shape or a honeycomb shape and fired. Then, the obtained ceramic sintered body (containing the radioactive substance 4) may be accommodated in a tube to form the gas supply path 3.

In the purification device of the second modification, the radioactive substance 4 is blended in the paint 16 and the obtained purification material 5 is applied to at least a part of the exterior of the gas supply path 3. (See Figure 6)
The paint 16 may be any known one, whether it is organic or inorganic, and the paint-like purification material 5 is applied to a ceramic sintered body formed in a spherical or honeycomb shape.
A ceramic sintered body having the above coating may be accommodated in a tube to form the gas supply path 3.

Next, the operation of the purification method and the purification device of the present invention will be described.
First, the gas supply path 3 of the purification device is connected to the combustion device E, for example, an air inlet of an automobile engine.
Next, the engine is started, and air A is pumped to the nitrogen separation membrane 6 by a pneumatic feeding device built in or externally attached to the gas supply device 1, and the air A is filtered by the nitrogen separation membrane 6 to enrich oxygen. of generating a gas O _R, and sends the gas supply path 3.

Then, the oxygen molecules in the oxygen-enriched gas O _R, when passing through the gas supply path 3 receives the radiation emitted from the radioactive material 4, and outermost electrons are excited according to the molecular bonding, chemical reactions It becomes activated oxygen which is easy to cause.
Therefore, when the activated gas G containing activated oxygen is supplied to the engine, a predetermined fuel (for example, gasoline, light oil, LPG, LNG, etc.) suitable for the engine is combined with the activated oxygen, and not all remains. Burned out.
Further, since the activated gas G has an oxygen concentration higher than that of normal air, even if the compression ratio of the supplied engine is not increased, more oxygen is sent into the cylinder, and a part of this is consumed by combustion. However, a large amount of high-temperature activated oxygen remains in the exhaust gas, and the soot deposited and deposited in the combustion chamber and the gas discharge path thereafter is burned and removed by such high-temperature activated oxygen.

While the oxygen-enriched gas O _R is transformed into activated gas G, has been described purifying device for supplying oxygen-enriched gas O _R consists only activated gas G in the combustion device E, the ability of the nitrogen separation membrane 7 (
That is, the amount of oxygen-enriched gas O _R obtained, taking into consideration the oxygen concentration, etc.), if only the oxygen-enriched gas O _R can not be ensured oxygen required for complete combustion of a given fuel, the oxygen-enriched gas O _R Air A
And mixing, and the resulting mixed gas may be irradiated with radiation to be transformed into the activated gas G.
In this case, as shown in FIG. 7, the air introduction portion 17 provided on the upstream side of the gas supply path 3, the air introduction part 17, the air A in the oxygen-enriched gas O _R in the gas supply path 3 When the air introduction part 17 is provided on the upstream side of the gas supply path 3, oxygen in the air A can receive radiation and be activated when passing through the gas supply path 3. The
The activated gas G made of this mixed gas also has an oxygen concentration higher than that of normal air, and high-temperature activated oxygen remains in the exhaust gas, and the high-temperature activated oxygen causes the combustion chamber and the gas discharge path thereafter. The soot deposited on the surface burns and is removed.

It is the schematic of the purification apparatus which concerns on this invention. It is the schematic diagram which abbreviate | omitted and expressed the purification apparatus. It is a schematic diagram of a nitrogen separation membrane. It is a schematic diagram of a nitrogen separation membrane module. It is a perspective view of the purification | cleaning material in the purification apparatus of a 1st modification. It is a perspective view of the purification | cleaning material in the purification apparatus of a 2nd modification. It is the schematic diagram which abbreviate | omitted and represented the purification apparatus which has an air introduction part.

Explanation of symbols

1 gas supply device 2 enriched gas outlet 3 gas supply path 4 radioactive material 5 purification material 6 nitrogen separation membrane E combustion device A air O _R enriched gas G activated gas P combustion gases
12 Sheet material
15 Plastic raw materials
16 Paint
17 Air inlet

Claims (7)

Air is filtered through a nitrogen separation membrane to generate an oxygen-enriched gas, the oxygen-enriched gas is irradiated with radiation, and the resulting activated gas and fuel are mixed and combusted in a combustion device. A method for purifying a combustion apparatus. The method for purifying a combustion apparatus according to claim 1, wherein air is mixed with the oxygen-enriched gas, and the resulting mixed gas is irradiated with radiation to form an activated gas. A gas supply device that generates and delivers oxygen-enriched gas by filtering air through a nitrogen separation membrane, and a gas supply path connected to an oxygen-enriched gas delivery port of the gas supply device, and a radioactive substance in the gas supply path A purification device for a combustion apparatus, wherein activated gas discharged from a downstream end of the gas supply path is supplied to the combustion apparatus. 4. The purification apparatus for a combustion apparatus according to claim 3, wherein an air introduction part is provided upstream of the gas supply path, and the air introduction part mixes air with the oxygen-enriched gas. The radioactive material is fixed to the sheet material to form a purification material, the purification material is attached to at least a part of the gas supply path, and the radioactive material is disposed in the gas supply path. 4. A purification apparatus for a combustion apparatus according to 4. 4. A purification material is prepared by blending a plastic material with a radioactive substance, and at least a part of a gas supply path is formed with the purification material, and the radioactive substance is disposed in the gas supply path. 4. A purification apparatus for a combustion apparatus according to 4. 5. A purification material is prepared by mixing a radioactive substance with a paint, the purification material is applied to at least a part of a gas supply path, and the radioactive substance is disposed in the gas supply path. The combustion apparatus purification apparatus as described.

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