JPH0545427U - Waste incinerator - Google Patents

Abstract

(57) [Summary] [Purpose] The ash content after burning in the waste incinerator is prevented from solidifying, and the incineration of unburned material is completed, so that the ash content is smoothly carried out of the furnace by the conveyor. With the goal. [Structure] The waste incinerator 1 is provided with a primary chamber 3 and a secondary chamber 5, in which the combustible waste 2 is accommodated in the primary chamber 3 while the secondary chamber 5 burns. Impossible waste 4 is stored. Then, when the ash and the like after the combustible waste 2 is burned in the primary chamber 3 is carried out of the furnace by the screw conveyor 28, the air is blown out from the air blowing port 30, so the combustible waste is The ash content of 2 is prevented from solidifying, and when unburned substances are mixed, the air assists the combustion, so that the incineration is carried out to the outside of the furnace.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a waste incinerator for incinerating waste, and more particularly to a waste incinerator for simultaneously performing incineration and heat treatment.

[0002]

[Prior Art]

 Conventionally, for example, a waste incinerator that burns combustible waste by a primary burner in a state where combustible waste among infectious medical waste is stored in the primary chamber is a combustion chamber in the primary chamber. It is configured so that the ash content after burning possible waste is carried out of the furnace by a conveyor or manual work.

[0003]

[Problems to be solved by the device]

 In the above conventional waste incinerator, the ash after burning the combustible waste in the primary chamber is carried out of the furnace by a conveyor, etc. There is a problem that it cannot be carried out. In addition, if unburned waste is mixed in, it will be taken out of the furnace as it is, and there will be problems in post-treatment. Therefore, in the present invention, it is possible to prevent the ash from solidifying by blowing air from the conveyor itself that carries out the ash after burning the combustible waste in the primary chamber to the outside of the furnace, or by blowing the air near the conveyor. At the same time, completing the incineration of unburned components is a technical issue to be solved.

[0004]

[Means for Solving the Problems]

 The technical means for solving the above-mentioned problem is to store combustible waste in a primary chamber and non-combustible waste in a secondary chamber communicating with the primary chamber. In a waste incinerator configured to assist the combustion of the combustible waste by a secondary burner and heat the non-combustible waste by a secondary burner, etc., in the primary chamber, Air to prevent the ash from solidifying on or near the conveyor itself that carries the ash after the combustible waste is incinerated out of the furnace, or to help incinerate the unburned ash. It is necessary to provide an air outlet to blow out air.

[0005]

[Action]

 According to the waste incinerator configured as described above, the ash and the like of the combustible waste incinerated in the primary chamber is collected on the conveyor that conveys the ash and the like to the outside of the furnace. Since air is blown out from the air outlet provided, ash is prevented from solidifying by this air blowout, and the incineration of unburned components on the conveyor is completed.

[0006]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side sectional view of a waste incinerator for incinerating medical waste and the like, and FIG. 2 is a sectional view taken along the line AA of FIG. As shown in FIG. 1, the waste incinerator 1 is equipped with a primary chamber 3 for incinerating combustible waste 2, that is, combustible materials and flame-retardant materials, and a non-combustible waste 4, that is, incombustible materials for sterilization. A secondary chamber 5 for heat treatment of necessary infectious medical waste, for example, waste related to syringes, etc., is provided so as to communicate with each other. The combustible waste 2 stored in the primary chamber 3 is carried in with the loading door 6 of the primary chamber 3 opened. On the other hand, the non-combustible waste 4 stored in the secondary chamber 5 is carried in through a door opening (not shown), and after being heat-treated, carried out through the same door opening. An exhaust pipe 7 is provided above the secondary chamber 5, and is configured to exhaust the combustion gas generated in the primary chamber 3 and the combustion gas generated in the secondary chamber 5. Furthermore, a pre-charging chamber 8 is provided in front of the charging door 6 of the primary chamber 2, and the pre-charging chamber 8 is provided for placing the combustible waste 2 before being stored in the primary chamber 2. A waste stand 9 is provided, and although not shown, a similar thing is also provided in the secondary chamber 5.

A primary burner 10 (see FIG. 2) that uses, for example, city gas as a fuel is provided on the side surface of the primary chamber 3, and a secondary burner 11 is provided in the secondary chamber 5. Is provided. Further, a plurality of air outlets 12 are opened on both side surfaces of the primary chamber 3, and a plurality of air outlets 13 are also opened on the bottom surface. Each of the air outlets 12 and 13 is connected to an air delivery pipe 14, and the air delivery pipe 14 is connected to an air source (not shown). A control valve 15 (see FIG. 2) for adjusting the flow rate of the air blown out from each of the air outlets 12 and 13 is provided in the middle of the air delivery pipe 14.

A water nozzle 16 for injecting water into the primary chamber 3 is provided on the ceiling of the primary chamber 3 in order to adjust the temperature in the primary chamber 3, and a water nozzle 16 is provided on the side surface of the secondary chamber 5. In order to adjust the temperature in the secondary chamber 5, a water nozzle 17 for injecting water into the secondary chamber 5 is provided.

A high speed burner 18 is provided between the primary chamber 3 and the secondary chamber 5. An air supply pipe 19 is provided on the primary chamber 3 side of the high speed burner 18. The high-speed burner 18 is provided to burn unburned gas generated in the process of burning the combustible waste 2 in the primary chamber 3, while the air supply pipe 19 is provided by the high-speed burner 18 or the like. It supplies the air necessary for burning unburned gas. An air delivery pipe 20 is connected to the air supply pipe 19, and the air delivery pipe 20 is connected to the air source. A control valve 21 for adjusting the flow rate of the air flowing out from the air supply pipe 19 is provided in the middle of the air delivery pipe 20.

Further, the primary chamber 3 is provided with a temperature sensor 22 that detects the temperature in the primary chamber 3 and outputs a signal corresponding to the temperature. An oxygen concentration sensor 23, which detects the oxygen concentration in the combustion gas and outputs a signal corresponding to the concentration, is arranged between 5 and 5. Further, a temperature sensor 24 that detects the temperature in the secondary chamber 5 and outputs a signal corresponding to the temperature is arranged above the secondary chamber 5. The primary chamber temperature controller 25 attached to a control panel (not shown) recognizes the actual temperature of the temperature sensor 22 area by inputting the signal output from the temperature sensor 22. The primary burner 10, the control valve 15 and the water nozzle 16 are controlled so as to maintain the temperature at a preset temperature. In addition, the secondary chamber temperature controller 26 recognizes the actual temperature in the area where the temperature sensor 24 is arranged by inputting the signal output from the temperature sensor 24, and then sets the temperature to a preset temperature. The secondary burner 11 and the water nozzles 16 and 17 are controlled so that they are held. Further, the oxygen concentration controller 27 inputs the signal output from the oxygen concentration sensor 23, recognizes the oxygen concentration in the area where the oxygen concentration sensor 23 is arranged, and holds the concentration at a preset concentration. , Controls the control valve 21.

A screw conveyor 28 is provided substantially below the air supply pipe 19 for discharging the ash of the combustible waste 2 after being burned in the primary chamber 3 to the outside of the waste incinerator 1. It is being touched. The screw conveyor 28 is provided with a plurality of air outlets 30 for blowing air from the central portion toward the outer peripheral portion, and the plurality of air outlets 30 are connected to the air delivery pipe 14. Has been done. The plurality of air outlets 30 prevent the ash content after the combustible waste 2 in the primary chamber 3 from being incinerated from being solidified on the screw-conveyor 28 so that it cannot be carried out of the furnace. This is provided to blow out air from the central portion of the screw conveyor 28 toward the outer peripheral portion in order to squeeze. Further, if the unburned waste is mixed on the screw conveyor 28, the plurality of air outlets 30 are carried out of the furnace as they are, so that the combustion of the unburned matter is completed. It has the role of blowing air into. Further, the non-combustible waste 4 contained in the secondary chamber 5 is placed on the rustle 29 made of ceramic or the like.

Next, the operation of the waste incinerator 1 will be described. With the temperature of the primary chamber 3 set by the primary chamber temperature controller 25 and the temperature of the secondary chamber 5 set by the secondary chamber temperature controller 26, the primary burners 10 and 2 are set. After the next burner 11 is ignited, the control valve 15 is set to the initial predetermined opening degree, and the temperature inside the furnace is raised, the combustible waste 2 is stored in the primary chamber 3 as shown in FIG. When the incombustible waste 4 is placed on the rustle 29 of the secondary chamber 5, the combustible waste 2 starts to burn and the incombustible waste 4 starts to heat. The high-speed burner 18 is also ignited as the combustible waste 2 starts to burn. In this way, when the combustion of the combustible waste 2 and the heating of the non-combustible waste 4 are started, the primary chamber temperature controller 25 sets 1 based on the detection signal output from the temperature sensor 22. The actual temperature of the secondary chamber 3 is recognized, and the primary burner 10 and the control valve 15 are controlled so that the actual temperature becomes the set temperature. The secondary chamber temperature controller 26 recognizes the actual temperature of the secondary chamber 5 based on the detection signal output from the temperature sensor 24, and the secondary temperature is adjusted so that the actual temperature becomes the set temperature. Controls Na 11.

As described above, the process in which the primary chamber temperature controller 25 controls the primary burner 10 and the control valve 15 so as to maintain the actual temperature of the primary chamber 3 at the set temperature. Then, when the actual temperature of the primary chamber 3 exceeds the set temperature, the water nozzle 16 is opened to inject water, and the actual temperature of the primary chamber 3 is lowered. Similarly, while the secondary chamber temperature controller 26 controls the secondary burner 11 so as to maintain the actual temperature of the secondary chamber 5 at the set temperature, the actual temperature of the secondary chamber 5 is When the temperature exceeds the set temperature, the water nozzles 16 and 17 are opened to inject water to lower the actual temperature of the secondary chamber 5. The water nozzle 16 burns the combustible waste 2 in the primary chamber 3 in addition to lowering the actual temperature in the primary chamber 3 as described above, and then removes the next combustible waste 2 in the primary chamber 3. By spraying water from the water nozzle 16 before storing in the next chamber 3, the combustible waste 2 from the rest due to the rapid inflow of outside air into the primary chamber 3 when the closing door 6 is opened. It has a role of preventing a large amount of smoke from being discharged from the exhaust stack 7.

In this way, the combustible waste 2 is burned and the non-combustible waste 4 is heated, and the oxygen concentration controller 27 inputs the signal output from the oxygen concentration sensor 23, The flow rate of the air supplied from the air supply pipe 19 is adjusted by recognizing the oxygen concentration in the area where the concentration sensor 23 is provided and controlling the control valve 21 so as to maintain the concentration at a preset concentration. However, the combustion efficiency of the unburned gas by the high speed burner 18 or the secondary burner 11 is increased.

As described above, the unburned gas is secondarily combusted, and the combustion heat obtained by the combustion is used to heat the incombustible waste 4 placed on the roster 29 of the secondary chamber 5. It is used as a heat source. That is, the combustion heat of the unburned gas by the high-speed burner 18 and the like becomes a secondary combustion heat flow as shown in FIG. It is heated by the heat flow.

The ash of the combustible waste 2 after being burned in the primary chamber 3 is dropped onto the screw conveyor 28, and is carried out of the waste incinerator 1 by the screw conveyor 28. At this time, since the air is blown out from the plurality of air outlets 30, the ash content after the combustible waste 2 in the primary chamber 3 is incinerated is prevented from solidifying on the screw conveyor 28, Further, when unburned waste is mixed on the screw conveyor 28, the unburned matter is carried out to the outside of the furnace because the blown air completes the combustion of the unburned matter. The problem of being lost is solved. Although the plurality of air outlets 30 are provided in the screw conveyor 28 itself in the above embodiment, the same effect can be obtained by providing the air outlets 30 near the screw conveyor 28.

[0017]

[Effect of the device]

 As described above, according to the present invention, combustible waste is stored in the primary chamber, and incombustible waste is stored in the secondary chamber communicating with the primary chamber. -In a waste incinerator configured to burn the combustible waste with a secondary burner and heat the non-combustible waste with a secondary burner, etc., the combustible waste in the primary chamber Since the ash after the incineration was carried out to the outside of the furnace itself or the air outlet was provided near the conveyor, the ash on the conveyor was prevented from being solidified by the blown air, and the ash was removed. The effect is that it can be smoothly carried out of the furnace. In addition, the blown air can help the incineration of unburned burned material on the conveyor, so that the combustion of unburned material is completed, preventing the unburned material from being carried out of the furnace. Has the effect of

[Brief description of drawings]

FIG. 1 is a side sectional view of an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

[Explanation of symbols]

 1 Waste incinerator 2 Combustible waste 3 Primary chamber 4 Non-combustible waste 5 Secondary chamber 10 Primary burner 11 Secondary burner 14 Air delivery pipe 28 Screw conveyor 30 Air outlet

Claims (1)

[Scope of utility model registration request] 1. Combustible waste is contained in a primary chamber, and incombustible waste is contained in a secondary chamber communicating with the primary chamber, and the combustion is performed by a primary burner. A waste incinerator configured to assist combustion of combustible waste and to heat the incombustible waste by a secondary burner or the like, wherein the combustible waste is incinerated in the primary chamber. An air outlet for blowing out air to prevent the ash from solidifying or to help incinerate the unburned portion was provided on or near the conveyor itself that carries the remaining ash out of the furnace. Waste incinerator characterized by.