JP2002071111A - Crematory and burning method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crematory which purifies toxic gas, such as dioxins or the like, which is emitted at the time of cremation, improves durability of the furnace wall, achieves labor saving and complete automation of operation, and improves safety. SOLUTION: A crematory 21 is provided with a layout chamber 1, a preparation chamber 3 which is provided to the upper part of the chamber 1 for elevation of a cremation truck 2, a cremation chamber 5 juxtaposed to the chamber 3 and tightly closed with a refractory door 4. The chamber 5 is provided thereunder with a furnace wall 7 having a collector for sap or water content, which is located at a position covering right beneath the truck 2 so that the truck 2 can be slid. The chamber 5 is further provided with a secondary cremation chamber 8 opposite to the wall 7 which has an auxiliary burner 17, a main burner 9 above a casket 16 and/or a secondary burner 10 at the upper side surface of the casket 16, an air outlet 12 disposed at an upper side wall of the chamber 5, a secondary combustion burner 20 disposed in a secondary combustion chamber 11, a cooling chamber 13 juxtaposed to the chamber 11, and a precoated bag filter 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention maintains the dignity of a corpse, minimizes the generation of toxic gases such as dioxin and NOx generated by cremated cremation, purifies exhaust gas, and
Efforts have been made to make the exhaust gas colorless, odorless and harmless, to improve the durability of the furnace wall, to shorten the cremation time significantly by adjusting the combustion power of the combustion burner, etc. Facilitates cleaning work after completion, saves labor and automatically operates crematory furnace equipment,
TECHNICAL FIELD The present invention relates to a cremation furnace and a method for burning a cremation furnace, which can improve safety.

[0002]

2. Description of the Related Art Japanese crematory customs are said to be influenced by Buddhism, and began in 700 (Emperor Bunmu 4) with the will of Monk Akira, after which Emperors Joji, Bunmu, Motoaki and Motomasa were cremated. During the Nara period and the Heian period, cremation spread from among the noblemen in the center and gradually penetrated into the region, but during the funeral, many fires were fired,
Due to the thought that the spirit goes up to the heavens with the smoke, using bones in a short period of time has also reduced the notion of the dead body and diminished the fear of the dead spirit.

In Meiji 6 a ban was issued once at the request of Confucian officials, but it was lifted in Meiji 8 and the "Cemetery and Burial Regulations" were established in Meiji 17; In 1890, the Infectious Disease Prevention Act was enacted, and criminal criminal deaths were inevitable.

[0004] In the Edo era, in the Edo period, stones were piled up on the open-air field and hollows were used in the center, but at present, cremation must not be performed at facilities other than crematoriums. Cremation furnaces were also divided into direct and indirect types according to the type of combustion.

[0005] In the current crematoriums, a plurality of crematory furnaces are often provided adjacent to one another in a horizontal row, and mourners including bereaved families are mixed and crowded, giving an unpleasant impression. Therefore, for example, as shown in JP-A-58-2516, a cremation room having a cremation furnace and a preparation room as a furnace front hall are provided on the first floor, and a cremation room having a cooling room and an osseous room is provided on the second floor. It was known to install equipment, but it was said that mourners, including bereaved families, had to part by the front of the furnace and move to the burial chamber after the cremation.

The progress of the cremation work is adjusted by the worker while visually checking the progress, adjusting the degree of combustion, the angle of the burner, and the position of the bogie in the furnace based on intuition and experience. In practice, the end of cremation was also judged visually by workers, but assuming that load cell detection was used, the load cell supported the rails that received the cremation cart in the main combustion chamber. A cremation furnace (actually honest 2-4) that detects the excess weight that decreases with the progress of the cremation with a load cell and moves the cremation cart and controls the cremation.
9462).

Also, dioxin generated by crematory,
It is necessary to purify toxic gases such as NOx and to make the exhaust gas colorless and odorless. The toxic gas generated in the main combustion chamber is composed of a main combustion chamber and a reburn chamber. Technology to purify smokeless and odorless (Japanese Utility Model Laid-Open No. 64-31322,
JP-A-3-1006) and the like, and in order to discharge it from the furnace without smoke and odor, the outlet temperature of the reburning chamber is generally controlled to about 800 ° C. to 900 ° C. (JP-A-10-300020).
No.) was also performed.

[0008] Further, a combustion method for a cremation furnace in which the generation of exhaust gas is prevented by sequentially performing low combustion, blowing, low combustion, and high combustion (Japanese Patent Publication No. 54-12157),
A method and apparatus for burning a cremation furnace provided with a tertiary combustion chamber communicating with a reburning chamber for treating exhaust gas generated from polymer materials, dry ice, etc. used for burial articles (Japanese Patent Laid-Open No. 183709/1990) The company is also making efforts to disseminate restrictions on the storage of burial items that may generate toxic gas in the hearse.

[0009]

It is known to provide a crematory room provided with a crematory furnace and a preparation room as a furnace front hall on the first floor, and to provide a crematory device provided with a cooling room and an osseous room on the second floor. However, there was a problem that the preparation room and the bone collection room had to be provided separately, a large space was required, and the construction cost increased.

[0010] While watching the progress of the cremation work by the operator, the degree of combustion, the angle of the burner and the position of the bogie in the furnace are adjusted based on intuition and experience, and the cremation is performed without any trouble. In the work in which the end is also determined by the visual inspection of the worker, not only the malfunction of the worker may occur but also the possibility of an accident due to the rupture of the burnable body.

In order to purify the toxic gas and to make the exhaust gas colorless and odorless, a main combustion chamber and a reburning chamber are provided, and a toxic gas generated in the main combustion chamber is purified in the reburning chamber without smoke and odor. In general, the outlet temperature of the reburning chamber is generally controlled to about 800 ° C. to 900 ° C. in order to discharge it out of the furnace without smoke and odor. Due to the short residence time of the exhaust gas and the imperfectness of the dust collector, unburned gas is discharged straight as it is.

Further, a method of burning a cremation furnace in which exhaust gas is prevented from being generated by sequentially performing low combustion, blowing, low combustion, and high combustion, a polymer material used for a burial product, dry ice, etc. To treat the exhaust gas
A cremation furnace combustion method and its device with a tertiary combustion chamber due to the incomplete design of the reburning chamber have also appeared, but the combustion blast function capacity and the ventilation equipment need to be large, and the equipment becomes complicated. In addition, there was a problem that construction costs and maintenance costs also increased.

[0013]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and maintains dignity of a corpse, purifies toxic gas such as dioxin and NOx generated by cremation, and reduces exhaust gas. To improve the durability of the furnace wall, rupture and separate the flame-retardant broth and moisture from the body, treat them in a separate room, and further reduce the cremation time by burning both the upper and lower sides. Not only is it extremely short compared to conventional ones, it not only saves energy but also facilitates cleaning work during cremation work and after cremation is completed. The present invention relates to a cremation furnace and a method for burning a cremation furnace that can be improved.

The means for solving the problems of the present invention will be described in detail with reference to the drawings. A furnace front chamber for transferring a cremator truck 2 up and down is provided above a front chamber 1, and the furnace front chamber 3 is provided in the furnace front chamber 3. A crematorium 5 is provided which is juxtaposed and hermetically sealed with a refractory door 4. The crematorium 5 can be mounted on a cremator room rail 6 so that the crematorium 2 on which a hearse 16 is mounted can slide. In the lower part of the crematorium 5, there is a furnace wall 7 having a sap of liquid juice and water at a lower part at a position that covers directly below the crematorium 2.
Are arranged on a slope, and a sub-cremation chamber 8 is provided in which an auxiliary burner 17 is disposed opposite a furnace wall 7 having a sap of water and water. A single or a plurality of sub-burners 10 are provided on the upper side of the main burner 9 and / or the snake 16, and an exhaust port 12 connected to a secondary combustion chamber 11 is provided on an upper side wall of the crematorium 5. A burner 20 for secondary combustion is provided in 11, a cooling chamber 13 is provided in parallel with the secondary combustion chamber 11, and a pre-coat type having a bug in which activated carbon, slaked lime, auxiliary, and the like are attached in advance. The cremation furnace 21 provided with the bag filter 14 is provided.

As an embodiment, a furnace front chamber for transferring the cremator truck 2 up and down is provided above the front chamber 1 and the front chamber 1
May be provided with a furnace front chamber having an air gap on the side or front so that the cremation cart 2 can be transferred from the front chamber 1 on the side or rear side of the furnace, or only the furnace front chamber without the front chamber may be provided. Be free.

At the time of burning the cremated object 15 in the crematorium 5, the burner of the snake 16 is burned while operating at a power of 800 ° C. to 900 ° C. Alternatively, the sub-burner 10 is used in combination for about 20 to 30 minutes to continuously burn at 800 ° C. to 1,000 ° C. without leaving any unburned material.
A burner 1 for spilling and eluting gravy and water, etc., which scatters and elutes on a furnace wall 7 having a pool of sap and water at the bottom from 5
Dioxin and NOx generated during cremation by burning in the sub-cremation chamber 8 with the furnace wall 7 of 900 ° C.
Exhaust gas of 850 ° C. to 1,000 in the secondary combustion chamber 11.
The exhaust gas that has been burned and decomposed at a temperature of 0 ° C. and passed through the secondary combustion chamber 11 is blasted at a stroke in a cooling chamber 13 mainly by water cooling.
This is a cremation furnace combustion method in which the mixture is cooled to 0 ° C. or lower, and further passed through a pre-coated bag filter 14 to be rendered colorless, odorless and harmless and discharged.

When the cremated body 15 is to be fully cremated, the unburned state of the cremated body 15 is detected by a detection device 22 such as an optical sensor, and the main burner 9 and the sub-burner that radiate heat into the crematorium 5. By automatically adjusting the thermal opening and closing of the sensor and burner nozzle,
This is a method for burning a cremation furnace in which the cremation body 15 is completely burned.

When burning the cremated body 15 in the crematorium 5, the burner 16 is burned while operating at a thermal power of 800 ° C. to 900 ° C. Exhaust gas such as dioxin and NOx is discharged at the time of low combustion at the start of operation. Since it was found that a small amount of cremation occurred, it was necessary to quickly shift to full-scale cremation of the cremated object 15, and the main burner 9 or the sub-burner 10 was used together for about 20 to 30 minutes at 800 ° C. to 1,000 ° C. Although continuous high-temperature combustion is performed, if high-temperature processing of 1,000 ° C or more is continued, bone does not remain, so that during the combustion, the optical sensor and the automatic opening and closing adjustment system of the burner nozzle do not dissolve the bone. Strict attention is paid to temperature control, so that the bones can be collected in a clean form without damaging the throat, and the dignity of the body is maintained.

At the lower part of the crematorium 5, a furnace wall 7 having a pool of liquid juice and water is disposed on the slope at a position covering the area directly below the cremator cart 2, and a pool of liquid juice and water is provided at the lower part. Since the auxiliary cremation chamber 8 in which the auxiliary burner 17 is disposed opposite the furnace wall 7 is provided, the flame-retardant scatters from the cremated body 15 to the furnace wall 7 having a pool of sap and water at the lower part, and evaporates. Almost no juice or water remains in the crematorium 2 so that the sub-cremation chamber 8 can be odorlessly incinerated. Incidentally, since the temperature of the furnace wall 7 is devised to reach 900 ° C., the sap and water evaporate instantaneously.

In full-scale cremation of the cremation body 15, the unburned state of the cremation body 15 is detected by the detection device 22. The detection device includes an optical sensor, a temperature sensor, an oxygen sensor, an image recognition device, and the like. All of the data is fed back to the adjustment of the thermal power of the main burner 9 and the sub-burner 10 radiating heat into the crematorium 5, and the cremated body 1
In order to achieve complete combustion of 5, the durability of the furnace wall of the cremation furnace is also improved. This detection device may be provided in the sub-cremation chamber 8 and the secondary combustion chamber 11.

Exhaust gas such as dioxin and NOx generated during cremation is supplied to the secondary combustion chamber 11 at an ambient temperature 8.
Exhaust gas retention time of 50 ° C. or more and 2 seconds or more is treated for perfect incineration deodorization. The harmful substances in the exhaust gas are decomposed, and the exhaust gas that has passed through the secondary combustion chamber 11 is introduced into the cooling chamber 13 mainly by water cooling. The exhaust gas is cooled to 200 ° C. or less at a stretch in order to minimize the generation of dioxin. After passing through the bag filter 14, it is made colorless, odorless and harmless and discharged. Incidentally, the synthesis temperature of dioxin is the highest at around 300 ° C., and the maximum temperature is 470 ° C.

The pre-coated bag filter 14 is different from the conventional method in which activated carbon, slaked lime and an auxiliary agent are blown into a flue, in which activated carbon, slaked lime and an auxiliary agent are sprayed on a filter cloth in advance, and all exhaust gas passing through the filter cloth is exhausted. Was reacted with the auxiliary agent, so that the removal rate of toxic substances in the exhaust gas was high.

The combustion products are divided into a group of hard-to-burn materials having a large amount of moisture and a group of bones and their attachments, and are burned in separate combustion chambers and fully automatically by adjusting the heating power of a combustion burner and changing the radiation angle. As a result, it has become possible not only to shorten the crematory time and save energy, but also to minimize the generation of toxic gases.

The unburned gas generated in the crematorium 5 is
An optical sensor, a temperature sensor, an oxygen sensor, and an image recognition device are provided in the cremation chamber 5 and the secondary combustion chamber 11 in order to make the secondary combustion chamber 11 flow through the flue and reburn unburned gas and send it to the cooling chamber 13. And the like, and temperature adjustment, correction of excess or deficiency of oxygen, grasp of the burning state of the cremation body 15, and the like are accurately performed in accordance with the detection signal of the detection apparatus 22.

For example, an upper limit temperature of 950 ° C. and a lower limit temperature of 85
The temperature of the secondary combustion chamber 11 is set to 8 by setting a temperature sensor at 0 ° C and linking this to a burner of proportional control.
It can be automatically controlled between 50 ° C and 950 ° C.

[0026]

According to the present invention, the dignity of the corpse is maintained, the generation of toxic gas such as dioxin and NOx generated by cremation is suppressed as much as possible, the exhaust gas is purified, and
Effluent gas is made colorless and odorless and harmless, the durability of the furnace wall is improved, the cremation body is ruptured at high temperature, and the sap and water of difficult-to-burn materials are transferred to another combustion chamber and incinerated, and bone and small attachments Process by heating from the top and bottom in the main combustion chamber, automatically adjusting the heat of the combustion burner in conjunction with the optical sensor, temperature sensor, etc., and comparing the cremation time with the conventional method due to radiation angle fluctuation etc. Not only to reduce energy consumption and save energy, but also to make cleaning work easier during crematory work and after cremation is completed, and to reduce labor and fully automatic operation of crematory furnace equipment and improve safety. Could be possible.

The cremation body 15 is burned in the cremation chamber 5, and toxic exhaust gas and the like generated in the cremation chamber 5 are burned and decomposed by the secondary combustion burner 20 in the secondary combustion chamber 11 and passed through the secondary combustion chamber 11. Exhaust gas can be sent to the cooling chamber 13 and passed through the pre-coated bag filter 14 to be colorless, odorless and harmless and can be discharged. Emission of toxic gas is eradicated. We were able to.

The toxic unburned gas generated in the crematorium 5 is caused to flow to the secondary combustion chamber 11 through the flue. 13, in the crematorium 5 and the secondary combustion chamber 11, an optical sensor, a temperature sensor, an oxygen sensor,
By installing and locating the detection device 22 such as an image recognition device, temperature adjustment, correction of excess / deficiency of oxygen, and grasp of the burning state of the cremation body 15 can be accurately performed in accordance with the detection signal of the detection device 22. It is something that will be done.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment showing a cremation furnace according to the present invention.

[Explanation of symbols]

 In the figure 1: Pre-room 2: Cremation trolley 3: Furnace front room 4: Fireproof door 5: Cremation room 6: Cremator room rail 7: Furnace wall with a sap hangout at the bottom 8: Secondary cremation room 9 : Main burner 10: Secondary burner 11: Secondary combustion chamber 12: Exhaust vent 13: Cooling chamber 14: Pre-coated bag filter 15: Cremated body 16: Listening 17: Auxiliary burner 18: Gravy stop 19: Ash removal 20 : Burner for secondary combustion 21: Cremation furnace 22: Detector

Claims (3)

[Claims] 1. A furnace front chamber having a gap at the bottom, side, or front so that a crematorium can be transferred from the front chamber on the floor, side, or rear of the front chamber. There is only a furnace front room without a chamber, and a crematory room is provided in parallel with the furnace front room and sealed with a refractory door, and the crematorium can be mounted on a cremator room rail so that the cremator truck can slide. In the lower part of the crematorium, a furnace wall having a liquid material storage area at the bottom is disposed on a slope so as to cover a position directly below the crematorium, and an auxiliary burner is provided at the lower part of the furnace wall opposite to the furnace wall. Provide a sub-cremation chamber arranged toward, and provide one or more main burners at the top of the hearse of the crematorium and / or one or more sub-burners at the top of the side of the hearse,
An exhaust port connected to the secondary combustion chamber is provided on the upper side wall of both cremation chambers, and a secondary combustion burner is arranged in the secondary combustion chamber,
A cremation furnace, wherein a cooling chamber is provided adjacent to the secondary combustion chamber, and a pre-coated bag filter is further provided. 2. When burning a cremation body in a cremation chamber, the burning of the hearse is burned while operating at a power of 800 ° C. to 900 ° C., and a main burner,
Alternatively, use a secondary burner together for about 20-30 minutes, 80
By the continuous high-temperature combustion of 0 ° C. to 1,000 ° C., in the initial step, the meat juice and water, which are flame retardants such as internal organs, are ruptured and scattered. For combustion, the auxiliary burner is used to burn in the sub-cremation chamber, and exhaust gas such as dioxin and Nox generated during cremation is burned in the secondary combustion chamber, and the exhaust gas that has passed through the secondary combustion chamber is mainly cooled by a water-cooled cooling chamber. A method for burning a cremation furnace, wherein the mixture is cooled at a stretch to 200 ° C. or less, passed through a pre-coated bag filter having activated carbon, slaked lime and auxiliary material and having a bug attached thereto, rendered colorless, odorless and harmless and discharged. . 3. When burning a cremated object in a crematorium, 80
When burning a cremated object in a cremation chamber operating at 0 ° C to 900 ° C, cremation by continuous high-temperature combustion at 800 ° C to 1,000 ° C from burning of a hearse operating at 800 ° C to 900 ° C Properly shift the body to full-scale cremation, and sequentially detect the degree and degree of unburned state of the cremation body with an optical sensor, etc., and measure the thermal power of the main burner radiating into the cremation chamber or the sub-burner used together A method of burning a cremation furnace that has been adjusted so that it can be reclaimed in a clean form without damaging the body's throat.