JPH0942622A - Cremator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cremator capable of burning the exhaust gas from a main combustion chamber completely again and discharging it after cooling the exhaust gas. SOLUTION: A recombustion chamber 51, communicating with a main combustion chamber 2 through an exhaust gas passage 53, and a cooling chamber 52, communicating with the recombustion chamber 51 through a communicating passage 56, are provided in the upper part of a cremator main body 1, constituted of refractories, so as to be neighbored while the inner peripheral surfaces of the recombustion chamber 51 and the cooling chamber 52 are formed so as to have arced surfaces, whose centers of curvatures are the central points of the recombustion chamber 51 and the cooling chamber 52. The flame injection port 61a of a recombustion burner 61 is provided in the recombustion chamber 51 so as to be directed obliquely so that vortex is generated in the recombustion chamber 51 while air injection nozzles 62 are provided in the cooling chamber 52 so as to be directed obliquely so that vortex is generated in the cooling chamber 52.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has an entrance for inserting and removing a trolley with a casket placed in the front of a main combustion chamber made of refractory material, and facing the main combustion chamber at the rear of the main combustion chamber. The present invention relates to a cremation furnace having a main combustion burner that emits a flame.

[0002]

2. Description of the Related Art A cremation furnace is disclosed in, for example, Shokai 58-7023.
As shown in Japanese Patent Laid-Open Publication No. 61-165515, an entrance is provided at the front of the main combustion chamber for the entry and exit of a trolley carrying a casket, and an opening and closing door is provided at the entrance. . A main combustion burner device is provided on the rear wall of the main combustion chamber.

The main combustion burner is mounted on the rear wall of the main combustion chamber so as to be slidable in the vertical direction, and the flame radiating from the main combustion burner toward the main combustion chamber is effectively used as a casket as a burning object. You can guess. Further, a cooling chamber is provided in the lower part of the main combustion chamber, and a carriage on which a casket is placed can be moved up and down by an elevating device so that the carriage can be moved up and down between the main combustion chamber and the cooling chamber.

A recombustion chamber having a recombustion burner is provided above the main combustion chamber and communicates with the main combustion chamber via an exhaust gas passage. The exhaust gas discharged from the main combustion chamber is re-combusted in the re-combustion chamber to remove smoke and deodorize, and is released to the atmosphere.

[0005]

However, the conventional cremation furnace configured as described above is provided with the re-combustion chamber, and the exhaust gas discharged from the main combustion chamber is re-combusted in the re-combustion chamber and desorbed. Although smoke and deodorization are performed, exhaust gas cannot be completely reburned, unburned carbon is released to the atmosphere, and exhaust gas is not cooled sufficiently and hot exhaust gas is released to the atmosphere. There is an inconvenience.

The present invention has been made in view of the above circumstances, and an object thereof is a cremation system in which exhaust gas from a main combustion chamber can be completely recombusted and can be cooled and released to the atmosphere. To provide a furnace.

[0007]

In order to achieve the above-mentioned object, the present invention provides a trolley in which a casket is mounted on the front part of the main combustion chamber of the cremation furnace body made of a refractory material. In a cremation furnace having a main combustion burner that emits a flame toward the main combustion chamber at the rear of the main combustion chamber, the main combustion chamber and the exhaust gas passage in the upper part of the cremation furnace main body. A re-combustion chamber communicating with the re-combustion chamber and a cooling chamber communicating with the re-combustion chamber via a communication passage are provided adjacent to each other, and the inner peripheral surfaces of the re-combustion chamber and the cooling chamber are located at the center of the re-combustion chamber and the cooling chamber Along with forming a point on the arc surface with the center of curvature, the flame emission port of the reburning burner is obliquely directed and installed in the reburning chamber so as to generate a vortex in the reburning chamber, and in the cooling chamber. Air injection nozzle so as to generate a swirl in the cooling chamber. It was directed obliquely, characterized in that the installed.

A second aspect of the present invention is characterized in that the air injection nozzle has a spraying function of simultaneously ejecting air and water and spraying them into the cooling chamber. In addition, the exhaust gas from the main combustion chamber is guided to the re-combustion chamber via the exhaust gas passage, where a swirl flow is generated by the re-combustion burner and completely re-combusted, and further guided to the cooling chamber, where a swirl flow is also generated. And be cooled efficiently.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2,
Cremator body 1 composed of refractory materials such as refractory bricks
A main combustion chamber 2 is provided in the main combustion chamber 2, and an entrance / exit 5 for entering and exiting a carriage 4 on which a casket 3 is placed is provided at a front portion of the main combustion chamber 2, and an opening / closing door 6 is provided at the entrance / exit 5. There is. An elevating wall 7 is provided at the rear of the main combustion chamber 2, and a main combustion burner 8 is provided on the elevating wall 7. An opening / closing door 6 provided at the front part of the cremation furnace main body 1 for opening and closing the entrance / exit 5 is suspended by a lifter 10 provided at the upper part of the cremation furnace main body 1 via a suspension rope 9.

Further, a reburn chamber 51 is provided on the front side of the ceiling 13 of the cremation furnace main body 1, and a cooling chamber 52 is provided on the rear side thereof. The re-combustion chamber 51 and the cooling chamber 52 are integrally formed of a refractory material, and the re-combustion chamber 51 communicates with each other through an exhaust gas passage 53 provided in the ceiling of the main combustion chamber 2. The lower part of the re-combustion chamber 51 and the cooling chamber 52
The lower part of the cooling chamber 52 communicates with a lower part of the partition wall 54 through a communication passage 55 provided in the partition wall 54, and the cooling chamber 52 has an exhaust port 56 communicating with the atmosphere.

The re-combustion chamber 51 is formed in a vertically long cylindrical shape, and an arcuate surface 57 whose center of curvature is the center point Oa of the re-combustion chamber 51 is formed on the inner peripheral surface of the re-combustion chamber 51, and the ceiling portion has a spherical surface. It is formed in 58. The cooling chamber 52 is also formed in a vertically long tubular shape, and the center point Ob of the cooling chamber 52 is formed on the inner peripheral surface thereof.
A cylindrical surface 59 having a center of curvature is formed.

A straight line L connecting the central points Oa and Ob is formed on the side wall of the arc surface 57 near the lower portion of the re-combustion chamber 51.
A through hole 60 that is inclined (for example, 45 °) with respect to the above is formed, and the flame emission port 61a of the reburn burner 61 is inserted into this through hole 60. That is, the flame emission port 6 of the reburning burner 61 is designed to generate a vortex in the reburning chamber 51.
1a is oriented diagonally.

In the vicinity of the lower part of the cooling chamber 52, the partition wall 54 is composed of a duct having a rectangular cross section, and air injection nozzles 62 communicating with a high pressure air supply source (not shown) are provided in two upper and lower stages. ing. The air jet nozzle 62 is directed toward the cooling chamber 52 with an inclination (for example, 45 °) with respect to the straight line L connecting the central points Oa and Ob, and is installed so as to generate a vortex in the cooling chamber 52. There is.

Next, the operation of the cremation furnace configured as described above will be described. First, the elevator 10 is operated to wind up the suspension rope 9, and the open / close door 6 is pulled up. Then, when the doorway 5 is fully opened, the elevator 10 is stopped and the opening / closing door 6 is fixed.

Next, the casket 3 containing the body is conveyed to the entrance / exit 5 of the cremation furnace body 1 by a moving carriage or the like, and the casket 3 is transferred from the moving carriage to the carriage 4. Next, when the elevator 10 lowers the open / close door 6 to close the door 5 to ignite the main combustion burner 8 and supply air from the air supply source to the main combustion chamber 2, the flame generated from the main combustion burner 8 Main combustion quality 2
It is radiated toward the casket 3 set up in the area and cremated.

During the cremation, exhaust gas is generated from the main combustion chamber 2, and unburned carbon is guided to the re-combustion chamber 51 through the exhaust gas passage 53 together with the exhaust gas. In the re-combustion chamber 51, since the flame is obliquely emitted from the flame emission port 61a of the re-combustion burner 61 and the arc surface 57 is formed, a swirl flow is generated as indicated by the arrow a. Therefore, the exhaust gas containing unburned carbon is uniformly reburned,
It is deodorized and smoked.

The deodorized and smoked exhaust gas is guided from the re-combustion chamber 51 to the cooling chamber 52 through the communication passage 55. Cooling room 5
In 2, the high pressure air supplied from the high pressure air supply source is obliquely jetted from the air jet nozzle 62, and
Since it is formed on the cylindrical surface 59, a vortex is generated as shown by the arrow b. Therefore, the exhaust gas is uniformly cooled in the cooling chamber 52 and is discharged to the atmosphere from the exhaust port 56.

According to the above embodiment, the cooling chamber 52
Although the air injection nozzles 62 are provided in the upper and lower two stages, as shown in FIG. 3, a plurality of, for example, six air injection nozzles 62 may be provided at equal intervals in the vertical direction of the cooling chamber 52, as shown in FIG. As shown, a water pipe 63 having a water jet nozzle 63a is provided at the center of the inside of the air jet nozzle 62, and the air jet nozzle 6
By injecting air from 2 and simultaneously ejecting water from the water ejection nozzle 63a, the water can be sprayed into the cooling chamber 52, and the cooling efficiency can be further improved.

According to the above embodiment, the reburning chamber 5
Although it is formed as a cylindrical body in which the circular arc surface 57 is provided on a part of the inner peripheral surface of 1, the cylindrical body may be formed like the cooling chamber 52. The trolley 4 installed in the main combustion chamber 2 may be placed on the lifting mechanism, and the trolley 4 may be lifted by the lifting mechanism so that the flame from the main combustion burner 8 may efficiently hit the casket 3. The structure of is not limited to the above embodiment. Further, the main combustion burner 8 may be a swing type in the vertical and horizontal directions.

[0020]

As described above, according to the first and second aspects of the present invention, the exhaust gas from the main combustion chamber is completely reburned by generating the vortex in the recombustion chamber and the cooling chamber. In addition to the above, there is an effect that the exhaust gas can be cooled and released into the atmosphere.

[Brief description of drawings]

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

FIG. 2 is a sectional view taken along the line AA of FIG. 1;

FIG. 3 is a vertical cross-sectional side view of a recombustion chamber and a cooling chamber showing a modified example of the same embodiment.

FIG. 4 is a cross-sectional plan view of a reburn chamber and a cooling chamber showing a modified example of the same embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Main cremation furnace 2 ... Main combustion chamber 4 ... Truck 5 ... Doorway 6 ... Open / close door 8 ... Main combustion burner 51 ... Recombustion chamber 52 ... Cooling chamber 61 ... Recombustion burner 62 ... Air injection nozzle

Claims (2)

[Claims] 1. A cremation furnace main body made of a refractory material has an entrance for inserting and removing a trolley carrying a casket in the front part of the main combustion chamber, and a flame toward the main combustion chamber in the rear part of the main combustion chamber. In a cremation furnace having a main combustion burner for radiating, a re-combustion chamber communicating with the main combustion chamber via an exhaust gas passage, and a cooling communicating with the re-combustion chamber via a communication passage at an upper part of the cremation furnace main body. Chambers are provided adjacent to each other, the inner peripheral surfaces of the re-combustion chamber and the cooling chamber are formed into an arc surface having a center point of the re-combustion chamber and the cooling chamber as a center of curvature, and the re-combustion chamber includes the re-combustion chamber. The flame emission port of the re-combustion burner is diagonally installed so as to generate a vortex, and the air injection nozzle is installed diagonally so as to generate a vortex in the cooling chamber in the cooling chamber. Cremation furnace characterized by. 2. The cremation furnace according to claim 1, wherein the air injection nozzle has a spraying function of simultaneously ejecting air and water and spraying them into the cooling chamber.