JP2007051860A - Cremation facility - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cremation facility capable of further shortening a cremation time. <P>SOLUTION: The cremation facility comprises a plurality of electric heating elements arranged on both side walls of a main incinerator, a plurality of high-pressure oxygen injection ports and a plurality of high-pressure air injection ports arranged alternately to be substantially horizontally lined at lower parts of both the side walls of the main incinerator, a plurality of electric heating elements arranged on both side walls of a re-incinerator, and a plurality of high-pressure oxygen injection ports and a plurality of high-pressure air injection ports arranged alternately to be substantially horizontally lined at lower parts of both the side walls of the re-incinerator. The tip of each of the high-pressure oxygen injection ports and high-pressure air injection ports of the main incinerator is formed in a narrow shape, and a diffusion nozzle is provided at the tip of each of the high-pressure oxygen injection ports and high-pressure air injection ports of the re-incinerator, and turned obliquely upward. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention generally relates to cremation equipment. More particularly, the present invention relates to a cremation facility that can reduce the time required for combustion.

  A cremation furnace is generally configured to supply fuel to a burner attached to a combustion chamber in the cremation furnace and burn it, thereby burning the body. However, in such a conventional cremation furnace, since it took about 90 minutes for incineration, the present applicant proposed a high-speed processing cremation method in order to shorten the time required for incineration (Patent Document 1). . This high-speed processing cremation method has succeeded in shortening the incineration time by burning while burning high-pressure combustion air toward the hard-to-burn part of the body.

Japanese Patent Publication No. 6-12171

  However, even with the high-speed cremation method described above, incineration time of about 50 minutes is still required. It is known that the cause of the time required for incineration is the presence of the incombustible part. In other words, the lumbar part of the corpse is extremely difficult to incinerate, and even when the other part of the corpse is completely incinerated, it is still carbonized. From this point on, the lumbar part is completely incinerated. In fact, it takes about 20 minutes.

  The present invention has been developed in view of such a situation, and an object thereof is to provide a cremation facility that can further shorten the incineration time.

  The main combustion furnace in which the trolley in which the soot is placed according to claim 1 is accommodated, the elevating door disposed at one end of the main combustion furnace, and the main combustion furnace. A cremation facility comprising a flue separated from the main combustion furnace by a top wall, and a recombustion furnace disposed above the flue and in communication with the flue through an opening, both of the main combustion furnace A plurality of electric heating elements arranged on the side walls of the main combustion furnace and a plurality of first high-pressure oxygen injection nozzles arranged alternately so as to form a line in a substantially horizontal direction at the lower part of both side walls of the main combustion furnace And a plurality of first high-pressure air injection ports, a plurality of electric heating elements disposed on both side walls of the recombustion furnace, and a substantially horizontal line at the bottom of both side walls of the recombustion furnace A plurality of second high-pressure oxygen injection ports and a plurality of second high-pressure air injection ports arranged alternately so as to form The tips of the first high-pressure oxygen injection port and the first high-pressure air injection port of the main combustion furnace are narrowly formed, respectively, and are formed at the tips of the second high-pressure oxygen injection port and the second high-pressure air injection port of the recombustion furnace. Each of the diffusing nozzles is configured to be capable of diffusing spray and is directed obliquely upward.

  The cremation equipment according to claim 2 is arranged so as to be suspended from the top wall of the recombustion furnace in the cremation equipment according to claim 1, or arranged on the top wall of the recombustion furnace. And a plurality of electric heating elements.

  The cremation equipment according to claim 3 is the cremation equipment according to claim 1, wherein a nozzle piece is disposed inside the diffusion nozzle, and the tip of the nozzle piece matches the tapered nozzle tip. It is formed in a truncated cone shape, and a plurality of spiral grooves are formed on the surface of the truncated cone.

According to the present invention, it is possible to efficiently incinerate in a short time by using both high pressure oxygen injection and high pressure air injection. In addition, by stopping energization of the electric heating element after the cremation and simultaneously injecting high-pressure air, it is possible to rapidly cool the trolley that is hot and hot, and to greatly reduce the bone pick-up time. . In addition, by injecting high-pressure air in the main combustion furnace, complete combustion of the unburned gas in the main combustion furnace can be promoted. In addition, since an electric heating element is used, noise during operation can be extremely reduced as compared with equipment using a burner. Furthermore, by disposing an electric heating element inside the reburning furnace, the unburned gas in the reburning furnace and the electric heating element can be brought into direct contact so that the unburned gas can be completely burned and air pollution can be prevented. The amount of CO ₂ , NO _x , and SO _x emitted can be reduced.

  Next, preferred embodiments of the present invention will be described in detail with reference to the drawings. The cremation facility according to the first embodiment of the present invention indicated by the reference numeral 10 as a whole in FIG. 1 includes a main combustion furnace 12. The main combustion furnace 12 is configured to accommodate a carriage 14 having an open bottom surface and a cage (illustrated by a broken line).

  A liftable door 16 is installed at one end of the main combustion furnace 12 (on the left side in FIGS. 2 and 3). When the carriage 14 is accommodated in the main combustion furnace 12, the door 16 is raised. After the carriage is accommodated in the main combustion furnace 12, the door 16 is lowered. 1 to 3 show a state where the carriage 14 is accommodated in the main combustion furnace 12 and the door 16 is lowered.

  A plurality of electric heating elements 18 are installed on both side walls 12 b of the main combustion furnace 12, and a refractory ceramic is disposed around the electric heating elements 18. Moreover, the top wall 12a and the side wall 12b of the main combustion furnace 12 are coat | covered with the ceramic of the refractory material. A viewing window 19 for monitoring the inside of the main combustion furnace 12 is provided on the wall opposite to the side where the door 16 is located.

  A plurality of first high-pressure oxygen injection ports 20 are arranged in a substantially horizontal line at the lower part of both side walls 12 b of the main combustion furnace 12, and between the first high-pressure oxygen injection ports 20. Are each provided with a first high-pressure air injection port 22. In other words, the first high-pressure oxygen injection port 20 and the first high-pressure air injection port 22 are alternately arranged at a certain height on both side walls 12b of the main combustion furnace 12.

  The tips of the first high-pressure oxygen injection port 20 and the first high-pressure air injection port 22 are each narrow (preferably, the inner diameter is about 2 mm). Further, the first high-pressure oxygen injection port 20 and the first high-pressure air injection port 22 (particularly, the first high-pressure oxygen injection port 20) are exposed to high temperatures during combustion, and thus are formed of heat-resistant steel. Further, each first high-pressure oxygen injection port 20 is connected to a high-pressure oxygen supply source, that is, an oxygen cylinder 24c via a backflow prevention valve 24a and a pressure adjustment valve 24b, and each first high-pressure air injection port 22 is also connected to each other. Each is connected to a compressor 26c via a backflow prevention valve 26a and a pressure regulating valve 26b.

  A first flue 30 is provided above the main combustion furnace 12, and the main combustion furnace 12 and the flue 30 are separated by a top wall 12 a of the main combustion furnace 12. The top wall 12a is substantially formed of refractory bricks. The top wall 12a is provided with an opening, that is, a flue port 32 on the door 16 side. Thereby, the main combustion furnace 12 and the first flue 30 communicate with each other via the flue port 32. In addition, you may provide another flue port (not shown) in the side of the observation window of the top wall 12a.

  A reburning furnace 34 is provided above the flue 30, and the first flue 30 and the reburning furnace 34 are separated by a top wall 30 a of the first flue 30. The top wall 30a is substantially formed of refractory bricks. The top wall 30 a is provided with an opening 36, whereby the first flue 30 and the recombustion furnace 34 communicate with each other through the opening 36.

  A plurality of electric heating elements 38 are installed on both side walls 34 b of the recombustion furnace 34, and a refractory ceramic is disposed around the electric heating elements 38. Moreover, the top wall 34a and the side wall 34b of the recombustion furnace 34 are covered with a refractory material ceramic. In FIG. 2, reference numeral 39 indicates a viewing window.

  A plurality of second high-pressure oxygen injection ports 40 are arranged in a substantially horizontal line at the lower part of both side walls 34 b of the recombustion furnace 34, and between the second high-pressure oxygen injection ports 40. The second high-pressure air injection ports 42 are respectively arranged. In other words, the second high-pressure oxygen injection port 40 and the second high-pressure air injection port 42 are alternately arranged at a certain height on both side walls 34 b of the recombustion furnace 34.

  Diffusion nozzles are provided at the tips of the second high-pressure oxygen injection port 40 and the second high-pressure air injection port 42 so that high-pressure oxygen / high-pressure air can be diffused and sprayed. FIG. 4A is a cross-sectional view showing a diffusion nozzle 40 a attached to the tip of the second high-pressure oxygen injection port 40. Inside the diffusion nozzle 40a, as shown in FIG. 4A, a nozzle piece 40a1 is arranged. The tip of the nozzle piece 40a1 is formed in a truncated cone shape so as to match the tapered nozzle tip 40a3, and a plurality of spiral grooves 40a2 are formed on the surface of the truncated cone (FIG. 4). (See (b)). The diffusion nozzle attached to the tip of the second high-pressure air injection port 42 has substantially the same configuration as the diffusion nozzle 40a.

  The tips of the second high-pressure oxygen injection port 40 and the second high-pressure air injection port 42 are directed obliquely upward. Since the recombustion furnace 34 is wider than the main combustion furnace 12, a diffusion nozzle is provided at the tip and the tip is oriented obliquely upward to enter the high pressure oxygen / high pressure air recombustion furnace 34. Enables diffusion spraying. The second high-pressure oxygen injection port 40 and the second high-pressure air injection port 42 (particularly, the second high-pressure oxygen injection port 40) are made of heat-resistant steel because they are exposed to high temperatures during combustion. Further, each second high-pressure oxygen injection port 40 is connected to an oxygen cylinder 24c via a backflow prevention valve 24a and a pressure regulating valve 24b, and each second high-pressure air injection port 42 is also connected to the backflow prevention valve 26a and The pressure control valve 26b is connected to the compressor 26c.

  A second flue 44 extending upward is disposed at the other end of the recombustion furnace 34 (on the left side in FIGS. 2 and 3). The reburning furnace 34 and the second flue 44 are It is separated by a dust screen 46.

  Next, the operation of the cremation equipment 10 configured as described above will be described. First, the door 16 of the main combustion furnace 12 is raised, the cart 14 on which the soot is placed is put into the main combustion furnace 12, and the door 16 is lowered. Next, the electric heating element 18 of the main combustion furnace 12 is energized. Then, the furnace atmosphere instantaneously reaches about 1000 ° C. and starts incineration.

By the time when the minor funerals were almost incinerated and the average temperature inside the main combustion furnace 12 rose to about 700 to 800 ° C., pure oxygen (purity 99.5 capacity) was obtained from each first high pressure oxygen injection port 20. % Or more) is injected at a desired location under high pressure (5 kg / cm ^{2 to} 10 kg / cm ² ). Then, an elongated rod-shaped flame of about 1000 ° C. is injected from the nozzle tip of each injection port 20 like a flame radiator, and the same effect as incineration by installing a plurality of incineration burners is obtained.

Further, the flame combustion portion which is carbonized from a first high pressure air injection port 22 whose tip is shaped in a narrow, injected into a desired location of the high pressure air ^{(5kg / cm 2 ~10kg / cm} 2). Then, the surface of the incinerator carbonized and causing the oxygen deficiency phenomenon is continuously peeled off by high-pressure air, rapidly causing a high-temperature chain combustion reaction, which significantly reduces the incineration time (in this case, The temperature rose from 1100 ° C to 1200 ° C, and it was found that the combustion time was shortened by about 20 minutes compared to the conventional method). In addition, by injecting high-pressure air, complete combustion of the unburned gas in the main combustion furnace 12 can be promoted. Furthermore, by stopping energization of the electric heating element 18 after the completion of the cremation and simultaneously injecting high-pressure air, it is possible to rapidly cool the trolley 14 that is at a high temperature, thereby greatly reducing the time for picking up bones. You can also.

On the other hand, simultaneously with the start of the cremation, the electric heating element 38 is also energized in the recombustion furnace 34 so that it is in a scorching state and waits for the exhaust gas to enter. After incineration in the main combustion furnace 12, incompletely burned carbon, soot and the like enter the recombustion furnace 34 through the flue 36, and pure oxygen (purity) from each second high-pressure oxygen injection port 40. 99.5 or more volume%) diffuse sprayed at high pressure ^{(5kg / cm 2 ~10kg / cm} 2), by promoting the catalytic combustion reaction or the like unburned carbon and dust caught almost 100%, unburnt To completely burn.

  FIG. 5 is a diagram showing a cremation facility according to the second embodiment of the present invention. The cremation equipment according to the second embodiment of the present invention, indicated as a whole by the reference numeral 10 'in FIG. 5, is suspended from the top wall 34a' into the recombustion furnace 34 'in the recombustion furnace 34'. Except for the fact that a plurality of electric heating elements 48 are arranged, it has substantially the same configuration as the cremation equipment 10 according to the first embodiment.

  In order to obtain good combustion efficiency, the electric heating elements 48 are preferably arranged in a zigzag pattern as viewed in plan, as shown in FIG. Alternatively, the electric heating elements 48 may be arranged in a lattice shape when seen in a plan view.

In the cremation facility 10 ′, the electric heating element 48 is disposed inside the reburning furnace 34 ′, whereby the unburned gas in the reburning furnace 34 ′ and the electric heating element 48 are brought into direct contact with each other to completely remove the unburned gas. In addition to being able to burn, the amount of CO ₂ , NO _x , and SO _x emissions that cause air pollution can be reduced.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say, it is something.

  For example, as the diffusion nozzles for the second high-pressure oxygen injection port 40 and the second high-pressure air injection port 42, those having a configuration other than the type shown in FIG. 4 may be used.

  In the second embodiment, a plurality of electric heating elements 48 are arranged so as to be suspended from the top wall 34a ′ into the recombustion furnace 34 ′. You may arrange | position in wall 34a '.

It is a front sectional view of cremation equipment concerning a 1st embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. It is a plane sectional view of the cremation equipment of FIG. FIG. 4A is a cross-sectional view showing a diffusion nozzle attached to the tips of the second high-pressure oxygen injection port and the second high-pressure air injection port, and FIG. 4B is inside the diffusion nozzle of FIG. It is the front view which showed the nozzle piece arrange | positioned. It is a front sectional view of cremation equipment concerning a 2nd embodiment of the present invention. FIG. 6 is a cross-sectional plan view of the cremation facility as seen along line 6-6 in FIG.

Explanation of symbols

10, 10 'Cremation equipment 12, 12' Main combustion furnace 14, 14 'Dolly 16 Door 18, 38, 48 Electric heating element 19, 39 Viewing window 20, 20' First high pressure pure oxygen injection port 22 First high pressure air injection Port 30, 44, 30 ', 44' Flue 34, 34 'Reburning furnace 40, 40' Second high-pressure pure oxygen injection port 42 Second high-pressure air injection port 46 Dust screen

Claims (3)

A main combustion furnace in which a carriage with a firewood is accommodated, a liftable door disposed at one end of the main combustion furnace, and a main combustion furnace disposed above the main combustion furnace, and by a top wall of the main combustion furnace A cremation facility comprising a flue separated from the flaming furnace and a reburning furnace located above the flue and in communication with the flue through an opening,
A plurality of electric heating elements disposed on both side walls of the main combustion furnace;
A plurality of first high-pressure oxygen injection ports and a plurality of first high-pressure air injection ports alternately arranged so as to form a line in a substantially horizontal direction at the lower part of both side walls of the main combustion furnace;
A plurality of electric heating elements disposed on both side walls of the reburning furnace;
A plurality of second high-pressure oxygen injection ports and a plurality of second high-pressure air injection ports alternately arranged so as to form a line in a substantially horizontal direction at the lower part of both side walls of the reburning furnace,
The tips of the first high-pressure oxygen injection port and the first high-pressure air injection port of the main combustion furnace are formed narrowly, respectively, and the tips of the second high-pressure oxygen injection port and the second high-pressure air injection port of the recombustion furnace A cremation facility, characterized in that a diffusion nozzle configured to be capable of diffusing spray is provided respectively, and is directed obliquely upward. A plurality of electric heating elements disposed so as to be suspended from the top wall of the recombustion furnace, or disposed on the top wall of the recombustion furnace; The cremation facility according to claim 1. A nozzle piece is arranged inside the diffusion nozzle, and the tip of the nozzle piece is formed in a truncated cone shape so as to match the tip of the tapered nozzle, and a plurality of pieces are formed on the surface of the truncated cone. The cremation facility according to claim 1, wherein a spiral groove is formed.

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