JPH10122543A - Incinerator and melting furnace using hydrocarbon additive to mixture gas of hydrogen and oxygen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce fuel atmosphere restricting generation of dioxine by a method wherein deionized water is subjected to electrolysis to produce mixture gas of hydrogen and oxygen as combustion means for an incinerator or the like, and then additives of hydro-carbon system are used thereto. SOLUTION: An ash melting furnace 1 for igniting municipal dusts or the like and melting the combustion ash is provided with a combustion ash loading port 2 at its upper part, and a slidable ash pushing rod 5 at its bottom part for pushing and dropping the combustion ash P into an ash melting chamber 4 having a stepped bottom surface 3 arranged in connection to a cylindrical container. Six mixture gas- injection ports 9 in each pair at upper stage, middle stage and lower stage connected to a hydrogen-oxygen mixture gas generating device 8 are arranged oppositely at both sides of the stepped bottom surface 3. This hydrogen and oxygen mixture gas generating device 8 is comprised of a pure water device and an electrolysis cell for removing impurities contained in tap water. Electrolysis is performed in the electrolysis cell, clean mixture gas with a rate of 2 pts. of hydrogen and 1 pt. of oxygen is passed through organic solvent such as hexane and toluene or the like so as to increase a total heating calorie and then the gas is used as fuel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incineration / melting furnace that uses a hydrocarbon-based additive in a mixed gas of hydrogen and oxygen to incinerate, for example, municipal waste and to dissolve the incinerated ash. It is.

[0002]

2. Description of the Related Art Conventionally, as this kind of incineration / melting furnace, there is a method in which garbage incineration ash is melted at a high temperature by a combustion burner using a fuel such as NLG or LPG and pure oxygen. Anhydrous sodium carbonate of 10% to 25% by weight is added, and the surface temperature of the melt is adjusted to 1 by a combustion burner using a fuel and pure oxygen having an oxygen concentration of 50% or more.
There is a method of melting at a high temperature of 500 to 1700 degrees.

[0003]

However, in both of the above-mentioned methods, since limited and expensive fuel is used while constantly storing and maintaining it in a cylinder, there is a problem in terms of economy and maintenance, and there are also problems in terms of carbon monoxide. There was a problem of generating toxic gas of hydrocarbons.

Accordingly, the present invention has been made in view of the above problems, and has an ideal cycle of using natural water as a raw material and returning it to water as a raw material by combustion. Hydrogen / oxygen mixed gas that contributes to solving environmental problems such as global warming and acid rain as well as industrial-based gas and non-polluting clean fuel gas that generates energy using carbon dioxide It is an object of the present invention to provide an incineration / melting furnace that creates a combustion atmosphere in which the generation of dioxins can be suppressed by high temperatures using the same.

[0005]

According to the present invention, there is provided an incinerator for heat-treating refuse at a high temperature and an ash melting furnace for melting refuse incineration ash incinerated in the incinerator. As a combustion means in the incinerator and the ash melting furnace, deionized water is electrolyzed in an electrolytic cell to produce hydrogen 2
A hydrogen / oxygen mixed gas generating means for generating a hydrogen / oxygen mixed gas having a ratio of 1 part to 1 part of oxygen is used, and a hydrocarbon-based additive is used for the hydrogen / oxygen mixed gas generating means.

Further, the bottom of the combustion chamber of the ash melting furnace into which the incineration ash is introduced from the incinerator is arranged so that the ash is sequentially dropped to the slag discharge side along the stairs by an ash pushing rod which slides horizontally at the bottom of the combustion chamber. The hydrogen / oxygen mixed gas generating means is provided with a crater for ejecting a mixed gas, which is formed in a step shape, and is arranged to face horizontally inward from both sides over a plurality of steps of each step of the combustion inner bottom portion. .

Further, a total of six craters for jetting the mixed gas are provided on each side of each step, and the hydrogen / oxygen mixed gas generating means is provided with a hydrocarbon-based organic solvent before the mixed gas combustion. , And an additive bottle for high calorificization for vaporizing and mixing a certain amount of hydrocarbons under a certain pressure is provided.

In the incineration / melting furnace using a hydrogen / oxygen mixed gas according to the present invention, the hydrogen / oxygen mixed gas generating means continuously performs a process of separating hydrogen and oxygen by electrolyzing deionized water. Hydrogen 2 and oxygen 1
Is the ideal mixture ratio for combustion, and the flame becomes a completely neutral flame. Further, by passing an organic solvent such as hexane or toluene through the mixed gas before the combustion (bubbling), a certain amount of hydrocarbons is vaporized and mixed within a certain pressure to burn the fuel, such as acetylene or LPG. It is possible to generate flames of various properties similar to the above, and a flame similar to the conventional pure oxygen combustion burner system can be produced. Combustion ash flows from the upper stage to the lower stage due to its own weight and flows by the mixed gas jetting crater of the hydrogen / oxygen mixed gas generating means facing from the both sides according to each step of the inner bottom toward the horizontal inward. As the process proceeds, high-temperature heat treatment is sequentially performed for each step, so that heat conduction efficiency is improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
Is an ash melting furnace for incinerating municipal waste and melting the incinerated ash, and the ash melting furnace 1 is formed in a bottomed cylindrical container as shown in FIGS. The upper part is provided with an incineration ash inlet 2 communicating with the incineration ash discharge port (not shown) of the garbage incinerator, and the bottom part is provided with the incineration ash P accumulated and loaded inside the bottom side wall of the cylindrical container. Stepped bottom part 3
An ash pushing rod 5 for sequentially pushing down to the ash melting chamber 4 side is provided slidably in the horizontal direction, and a slag discharge section 6 is provided on the lowermost side of the stepped bottom portion 3. Further, a gas exhaust port 7 is provided in an upper part of the ash melting chamber 4. A pair of mixed gas jetting craters 9 connected to the hydrogen / oxygen mixed gas generator 8 are provided on both sides of the stepped bottom portion 3 corresponding to each step toward the horizontal inward direction.
For example, the upper, middle, and lower tiers may be opposed to each other in pairs so that a high-temperature heat treatment can be sequentially performed for each step.
Books are arranged.

As shown in FIG. 3, the hydrogen / oxygen mixed gas generator 8 has a pure water device 10 for removing impurities containing inorganic ions such as chlorine ions in tap water, and a float of an electrolytic cell described later. An automatic water supply pump 11 for automatically supplying water to the cell according to a signal from a switch, and an aqueous solution of potassium hydroxide which is a raw material for gas generation are contained therein, where electrolysis is performed and aqua gas (a mixed gas of hydrogen and oxygen) is supplied. )
At the same time as removing the alkali contained in the gas generated in the electrolytic cell 12 and
The gas generated is once stabilized, serves to dehumidify and remove impurities, and is further provided with a gas purification device 13 equipped with a pressure switch, a pressure alarm, and a rupture valve, and a working pressure of the gas of about 1 kgf /
a pressure reducing valve 14 for adjusting the pressure to 14 cm 2 and a water ring type safety device 1 for preventing return to the device in the event of a backfire.
5 and an additive bottle 16 for passing a hydrogen / oxygen mixed gas through an organic solvent such as hexane / toluene (bubbling) to increase the total calorie (calorie) and at the same time reduce the burning rate to make backfire less likely to occur. And an oxygen generator 17 (300-600 liters / H) which can be operated in a complete cylinderless manner when additional oxygen is required. All the components are portable and compact unit products. . And the mixed gas jetting crater 9
Are individually connected to the additive bottle 16 and the oxygen generator 17. As described above, the feature of the present invention is that, in an incinerator for performing high-temperature heat treatment of refuse and an ash melting furnace for dissolving garbage incineration ash incinerated in the incinerator, the incinerator and the ash melting furnace are used as a combustion means. The deionized water is electrolyzed in the cell 12 and a clean of 2 parts hydrogen and 1 part oxygen is obtained.
The advantage is that a hydrogen / oxygen mixed gas generator 8 that generates a stable hydrogen / oxygen mixed gas using a hydrogen gas and oxygen power is used to enhance the combustion effect. The clean gas production pressure has an upper limit of 2.8 kg / cm 2, and the high pressure gas control law is not applied in order not to store generated gas.

Although not shown in the drawings, the hydrogen / oxygen mixed gas generator 8 can of course be used as combustion means in a refuse incinerator.

[0012]

As described above, according to the present invention, as a combustion means in an incinerator and an ash melting furnace, deionized water is electrolyzed in an electrolytic cell to produce a hydrogen having a ratio of 2 parts of hydrogen to 1 part of oxygen.・ Since hydrogen / oxygen mixed gas generating means for generating oxygen mixed gas is used, stable and non-polluting clean gas with no variation in gas components at a constant mixing ratio using only inexhaustible pure water as combustion means A clean atmosphere that can be used and suppresses the generation of dioxin can be used to create a combustion atmosphere rich in economy, and the decomposition and elimination of dioxin due to high temperatures can be further promoted. Also, the running cost of clean gas production can be greatly reduced.

The bottom of the combustion chamber of the ash melting furnace into which the incineration ash is introduced from the incinerator is stepped so that the ash is sequentially dropped down to the slag discharge side along the stairs by an ash push rod horizontally sliding at the bottom of the combustion chamber. Since the craters for ejecting the mixed gas of the hydrogen / oxygen mixed gas generating means are arranged to face inward from both sides corresponding to each step of the inner bottom portion of the combustion and inward horizontally, the combustion ash is formed from the upper stage to the lower stage. , The fluid is allowed to flow under its own weight, and a high-temperature heat treatment is performed for each step, so that heat conduction efficiency is improved. Further, it is possible to easily suppress the generation of CO due to the high-temperature complete combustion and to dissolve the dioxin in a glassy state simultaneously with the incineration ash.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of an incineration ash melting furnace showing an embodiment of the present invention.

FIG. 2 is a schematic plan view of the incineration ash melting furnace.

FIG. 3 is a process block diagram of the hydrogen / oxygen mixed gas generator.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Ash melting furnace 2 ... Incineration ash inlet 3 ... Stepped bottom part 4 ... Ash melting chamber 5 ... Ash pushing rod 6 ... Slag discharge part 7 ... Gas exhaust port 8 ... Hydrogen / oxygen mixed gas generator 9 ... Mixed gas Crater for jetting 10 ... Pure water device 11 ... Automatic water supply pump 12 ... Electrolysis cell 13 ... Gas purification device 14 ... Pressure reducing valve 15 ... Water seal type safety device 16 ... Additive bottle 17 ... Oxygen generator

Claims (4)

[Claims] 1. An incinerator for heat-treating garbage at a high temperature and an ash melting furnace for melting incineration ash incinerated in the incinerator, wherein deionization is performed in an electrolytic cell as a combustion means in the incinerator and the ash melting furnace. Electrolyze water to 2 parts hydrogen and 1 oxygen
A hydrogen / oxygen mixed gas characterized by using a hydrogen / oxygen mixed gas generating means for generating a hydrogen / oxygen mixed gas in a proportion of parts, and using a hydrocarbon-based additive in the hydrogen / oxygen mixed gas generating means. Incineration / melting furnace using hydrocarbon additives. 2. The bottom of the combustion chamber of the ash melting furnace into which the incineration ash is introduced from the incinerator, so that the ash is sequentially dropped to the slag discharge side along the stairs by an ash push rod horizontally sliding at the bottom of the combustion chamber. The hydrogen / oxygen mixed gas generating means is provided with a crater for ejecting a mixed gas, which is formed in a step shape, and is arranged to face horizontally inward from both sides over a plurality of steps of each step of the combustion inner bottom portion. An incineration / melting furnace using a hydrocarbon-based additive in the hydrogen / oxygen mixed gas according to claim 1. 3. The hydrogen-oxygen mixed gas according to claim 1, wherein a total of six craters for ejecting the mixed gas are provided on each side of each step. The incineration and melting furnace used. 4. The hydrogen / oxygen mixed gas generating means includes:
High calorie that passes a hydrocarbon organic solvent before mixed gas combustion and vaporizes and mixes a certain amount of hydrocarbons under a certain pressure
4. An incineration / melting furnace using a hydrogen-oxygen mixed gas and a hydrocarbon-based additive in a hydrogen-oxygen mixed gas according to claim 1, further comprising an additive bottle for conversion.