JPH0212434Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a waste combustion stove, and more particularly to improvements in stoves or similar furnaces that use waste solid materials such as waste tire chips, waste wood chips, and waste plastics as a fuel source.

Conventionally, various types of combustion stoves that use waste as fuel have been used. The previous configuration consisted of a primary combustion chamber, a heat exchange chamber connected to the primary combustion chamber via a secondary combustion cylinder in which a secondary air supply port was formed,
It consists of an exhaust pipe having an exhaust suction fan connected to the heat exchange chamber, a gas vent pipe is connected between the bottom of the primary combustion chamber and the secondary combustion pipe, and a water pipe is connected to the bottom of the primary combustion chamber. It is equipped with a tank.

According to the device having this structure, the waste solids can basically be used for purposes such as heating, but it has the following disadvantages. In other words, when waste tire chips and the like are burned, various foul-smelling and harmful gases such as black smoke gas and sulfur dioxide gas are generated, and black smoke particles in the combustion gas leak from inside the stove into the room outside the stove. , the odor may become unbearable.

Therefore, the special public interest rate was 49-25028, the special public interest rate was 52-20793,
Unexamined Japanese Patent Application 1973-72963, Unexamined Japanese Patent Application 1972-59844, Unexamined Japanese Patent Application 1976-5984
127339, JP-A-49-73734, etc., a primary combustion chamber and a heat exchange chamber connected to the primary combustion chamber via a secondary combustion cylinder in which a secondary air supply port is formed; In a waste combustion stove comprising an exhaust pipe having an exhaust suction fan connected to the heat exchange chamber, and a gas vent pipe connected between the bottom of the primary combustion chamber and the secondary combustion pipe, A water tank is provided below the secondary combustion cylinder, the lower part extends above the tank, the upper nozzle faces into the secondary combustion cylinder, and this nozzle faces the heat exchange chamber. Techniques for providing vaporizer tubes are considered.

In this way, the black smoke particles contained in the combustion gas passing through the secondary combustion tube 5 are adsorbed to the vaporized moisture,
In some cases, it may be possible to process it within the stove and avoid discharging it outside the stove as much as possible. However, in order for this technical idea to be effectively utilized, the amount of vaporized water that can sufficiently adsorb the black smoke particles in the secondary combustion cylinder must be obtained compared to the flow rate of the combustion gas flowing in the secondary combustion cylinder. It is also required that the vaporization position of the vaporized moisture is suitable for the adsorption of black smoke particles and the subsequent treatment within the stove, and that no other obstructions occur on the combustion gas flow path within the stove.

However, in the conventional combination technology, this point has not been fully elucidated. Therefore, the purpose of the present invention is to vaporize moisture in the secondary combustion cylinder and make the black smoke particles in the combustion gas adsorbed to the moisture, thereby reducing the black smoke particles in the combustion gas as much as possible. In order to prevent water from being discharged outside the stove, a sufficient amount of moisture can be vaporized in proportion to the combustion of the stove without any other special measures, and therefore black in the combustion gas produced in proportion to the combustion can be obtained. The purpose of the present invention is to provide a means for adsorbing smoke particles with almost no escaping, and to change the vaporization position of water so that the black smoke particles in the combustion gas are easily adsorbed by the water, so that they hardly come out of the stove and are absorbed into the stove. The purpose is to provide a location and means that allow easy processing.

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a primary combustion chamber, and a lid 2 is formed at the top, and a primary air supply port 4 is formed under a floor 3 at the bottom. Next, 5 is a secondary combustion tube connected to the upper part of the primary combustion chamber 1, and a gas vent pipe 6 led out from the lower part of the primary combustion chamber 1 is connected to the secondary combustion tube 5. A secondary air supply port 7 is formed in the cylinder 5 . A heat exchange chamber 8 is connected to the other end of the secondary combustion cylinder 5.
An exhaust pipe 10 having an exhaust suction fan 9 is connected to the upper part of the other side.

A water tank 11 is provided below the secondary combustion tube 5, a vaporization pipe 12 is provided whose lower part is immersed in the liquid W in the water tank 11, and the upper nozzle 13 of the vaporization pipe 12 is connected to the secondary combustion pipe 12. Face the inside of tube 7. In this case, the upper nozzle 13 opens at the most downstream position of the secondary combustion cylinder 5 and is arranged such that the opening of the nozzle 13 faces toward the heat exchange chamber 8 . In addition, the water tank 11 is placed adjacent to the wall surface of the heat exchange chamber 8, so that the water W in the water tank 11 can be evaporated by conductive heat transfer from the heat exchange chamber 8. Of course, the water W in the water tank 11 is also heated by the radiant heat from the primary combustion chamber 1. Furthermore, a plurality of baffle plates 14, 15 are arranged above and below in the heat exchange chamber 8, and a plurality of gas passages 16, 17, 18 are formed. In this case, the baffle plate 14 located first among the baffle plates 14 and 15 along the flow direction of the combustion gas is opposed to the outlet near the outlet of the secondary combustion cylinder 5, and the baffle plate 14 is placed upward. Place it from the bottom down. A collection tray 19 for collecting black smoke particles in the combustion gas is provided at the bottom of the first gas passage 16, which can be inserted and removed from the outside. In order to be able to insert and remove it from the outside, it is possible to provide an opening/closing plate at the lower bottom of the heat exchange chamber 8, and by opening and closing it, the collection pan 19 can be inserted and removed in a pull-out manner. can.

The combustion operation will be explained based on such a configuration.

Using the lid 2, firstly, waste solid materials such as waste tire chips T are put in, and paper P for ignition is also put in and ignited. Then, primary air is supplied from the primary air supply port 4, oxidative combustion is started, and the combustion gas is directed toward the secondary combustion tube 5. On the other hand, some of the gas that accumulates below the primary combustion chamber 1 is removed by the gas vent pipe 6.
Similarly, it flows counter-currently to the secondary combustion cylinder 5 via.
In the secondary combustion cylinder 5, secondary air is supplied from the secondary air supply port 7, so that re-combustion is better performed. Then, before flowing into the heat exchange chamber 8, the liquid W in the water tank 11 is evaporated by conduction heat transfer from the heat exchange chamber 8 and radiant heat transfer from the surroundings, and the vaporization tube 12 is evaporated. Since the steam is drawn and discharged from the nozzle 13 into the secondary combustion cylinder 5 through the nozzle 13, the combustion gas passing through the secondary combustion cylinder 5 and this steam are mixed here. That is, as shown in Fig. 2, the combustion gas when waste is combusted contains black smoke particles and sulfur dioxide gas component particles A;
When these particles A are brought into contact with water vapor B, they are dissolved in the water vapor particles and adsorbed therein. In this case, the amount of combustion gas and black smoke particles generated therein is proportional to the combustion time and the size of combustion.
On the other hand, the amount of water evaporated by conductive heat transfer in the heat exchange chamber 8 is also proportional to the combustion time and combustion. Therefore, it is easy to set the amount of vaporized moisture that is convenient for adsorbing the generated black smoke particles, and there is no possibility that either the black smoke particles or the moisture will be excessive compared to the other. Almost absorbed. The black smoke particles and vapor components adsorbed to each other flow into the heat exchange chamber 8 along with the combustion gas, but are first blocked by the baffle plate 14 and are sucked and discharged directly toward the exhaust stack 10. First, it falls below the heat exchange chamber 8 and is collected on the collection pan 19. Therefore, only the combustion gas from which malodorous components have been removed enters the gas passage 1.
6 and 17, the exhaust pipe 10, and is discharged to the outside by the exhaust suction fan 9. As a result, indoor air comes into convective contact with the heat exchange chamber 8 and is warmed, and the room is warmed by the radiant heat of the entire stove. Moreover, the malodorous components and harmful components produced when the exhaust solids are burned are removed as much as possible, so that the surrounding environment is not polluted, and no malodors are emitted into the room, making it easy to use.

In addition, since the nozzle 13 of the vaporizer pipe 12 is located near the most downstream side of the secondary combustion tube 5, there is a risk that black smoke particles etc. adsorbed by moisture may fall into the secondary combustion tube 5 and accumulate there. There is no.

In the example shown in FIG. 3, three baffle plates 20, 21, and 22 are arranged in the heat exchange chamber 8, and the vaporizing tube 12 is prevented from being immersed in the liquid W. is also substantially the same as the previous example. Also the fourth
In the example shown in the figure, a water tank 23 is arranged around the secondary combustion tube 5, and a plurality of jet holes 25 are formed in the part of the vaporizing pipe 24 that is immersed in the liquid W of the water tank. The example case is also substantially the same as the previous example.

As detailed above, according to this invention, the black smoke particles in the combustion gas can be adsorbed to the evaporated moisture, and not only can they be prevented from being discharged outside the stove as much as possible, but they can also be vaporized through the vaporization pipe 12. This moisture is mainly made possible by conductive heat transfer in the heat exchange chamber 8, and the amount of conductive heat transfer in the heat exchange chamber 8 is proportional to the overall combustion time of the stove and the size of combustion. Therefore, the amount of moisture vaporized is proportional to the state of combustion. On the other hand, the generation of black smoke particles in the combustion gas is also proportional to the combustion time and its size. Therefore, it is easy to determine the amount of water vaporization that is convenient for sufficiently adsorbing black smoke particles, and the emission of black smoke particles in the combustion gas to the outside of the stove can be suppressed as much as possible. In addition, the nozzle 13 of the vaporizer pipe 12 is located near the most downstream side of the secondary combustion tube 5, and the first baffle plate is located opposite the outlet of the nozzle 13, so that black smoke particles are easily absorbed by moisture. Moreover, since there is a collecting tray 19 below it, it is easier to collect the waste. For these reasons, black smoke particles in the combustion gas can be better removed.

[Brief explanation of the drawing]

The accompanying drawings show embodiments of the present invention, FIG. 1 is a longitudinal side view showing the first embodiment, FIG. 2 is an enlarged view of the main parts, and FIG. 3 is a longitudinal side view showing the second embodiment. FIG. 4 is a longitudinal side view showing the third embodiment, in which 1 is a primary combustion chamber, 4 is a primary air supply port, 5 is a secondary combustion tube, 6 is a gas vent pipe, and 7 is a secondary air Supply port, 8 is a heat exchange chamber, 9 is an exhaust suction fan, 10 is an exhaust pipe, 11 is a water tank, 12 is a vaporization pipe, 13 is a nozzle, 14, 15 is a baffle plate, 19 is a collection pan, 2
0, 21, 22 are baffle plates, 23 is a water tank, 24
25 is a vaporizer tube, 25 is a jet hole, P is paper, T is a waste solid such as waste tire chips, W is water, A is a component such as black smoke particles, and B is water vapor.

Claims (1)

[Claims for Utility Model Registration] A primary combustion chamber 1, a heat exchange chamber 8 connected to the primary combustion chamber 1 via a secondary combustion tube 5 in which a secondary air 7 supply port is formed; It consists of an exhaust pipe 10 having an exhaust suction fan 9 connected to a heat exchange chamber 8,
This is a waste combustion stove in which a gas venting pipe 6 is connected between the bottom of the primary combustion chamber 1 and the secondary combustion cylinder 5, and the secondary combustion cylinder 5 is provided with a vaporizing pipe 12. In the fuel stove; the nozzle 13 of the vaporizing pipe 12 is provided near the most downstream side of the secondary fuel cylinder 5, and the water tank 11 connected to the lower part of the vaporizing pipe 12 is arranged adjacent to the wall surface of the heat exchange chamber 8. Among the plurality of baffle plates arranged in the heat exchange chamber 8 for partitioning the gas passages, the baffle plate located first along the flow direction of the combustion gas is used for the secondary combustion. The collecting tray 19 for collecting black smoke particles in the combustion gas is arranged facing the tube 5 near the outlet from above and facing downward. A waste combustion stove characterized by being disposed below a passageway.