JP6552990B2 - Animal cremation facility and control method of combustion temperature in animal cremation facility - Google Patents

Description

  The present invention relates to an animal cremation facility and a method of controlling the combustion temperature in the animal cremation facility.

In recent years in Japan, there are many people who breed companion animals with the same degree of affection as family members. Along with this, cremation and funerals similar to humans may be performed when petting the pet animal. The applicant has been engaged in the development of animal cremation facilities for many years (e.g., Patent Document 1).
In such animal corpse cremation facilities, as in the case of human corpse cremation, after introducing a fuel such as gas or oil and igniting, self-combustion occurs in a predetermined temperature range until it becomes ash. The procedure of burning is carried out. However, in animal carcasses with high oil content, the combustion temperature rises to a considerable temperature (for example, 1000 ° C.) or higher during self-combustion, and the cremation equipment is overburdened as expected or incomplete due to lack of oxygen. Burning may cause black smoke. For example, when using a refractory brick for widespread use, it is preferable to burn at a temperature of 1200 ° C. at the maximum. Further, in order to solve the oxygen shortage, an expensive blower or high-concentration oxygen may be used, but it becomes expensive equipment.
In human cremation equipment, in order to avoid such a situation, the equipment is constructed using expensive refractory bricks and self-burns at a high temperature of 2000 ° C. or higher (Patent Document 2), or incomplete combustion. Some have a protective device such as a prevention device, an oil absorption device, and an odor absorption device.

JP 2008-138934 A Special table 2003-500629 gazette

However, since the devices provided in the human cremation facility are very expensive (in some cases, more expensive than the cremation facility itself), these devices are used for the corpse of animal corpses. It is difficult to say that providing it is a realistic measure.
The present invention has been made in view of the above problems, and an object thereof is to provide an animal cremation facility which can perform appropriate temperature control at the time of combustion.

In order to achieve the above object, a facility for cremation of animal carcass according to the first invention comprises a combustion chamber for burning an animal carcass, a fuel introducing device for introducing a fuel into the combustion chamber, and a temperature in the combustion chamber A temperature sensor that compares the combustion temperature measured by the temperature sensor with a preset combustion upper limit temperature, and when the combustion temperature exceeds the combustion upper limit temperature, mist-like cooling water is introduced into the combustion chamber. And a cooling water introduction device.
According to the present invention, when the temperature during burning of the animal corpse exceeds the predetermined combustion upper limit temperature, the combustion temperature can be lowered at once by introducing misty cooling water into the combustion chamber.
The operation of the cooling water introduction device may be performed by a human or may be controlled automatically by a computer. When using a computer, it is preferable to compare the combustion temperature measured by the temperature sensor with a preset combustion upper limit temperature, and to operate the cooling water introduction device when the combustion temperature exceeds the combustion upper limit temperature.
In the present invention, the animal carcass includes pets that are subjected to cremation, such as mammals such as cattle, horses, sheep, goats, pigs, dogs, cats, monkeys, and reptiles such as lizards, crocodiles, chameleons, and turtles. It is. Among these, cattle, horses, sheep, goats, pigs, large dogs and the like may particularly contain a large amount of oil, so the present invention is particularly effective.

The fuel used at the time of combustion includes gas, oil, kerosene and the like. At this time, when petroleum is used as the fuel, there is known an existing facility provided with two fuel introduction devices in advance. These fuel introduction devices are used as one that introduces a large amount of fuel at the start of combustion (main line) and one that performs fine combustion control when combustion continues (secondary line). In the present invention, one of these may be used for the cooling water, and therefore, it is possible to add new equipment, which is a preferable embodiment.
The cooling water includes both liquid water and misty water. However, when liquid water is supplied, it is difficult to spread the entire combustion chamber, and water as a liquid remains without being evaporated and post-treatment becomes difficult. For this reason, it is preferable to introduce misty water.

The control method of the combustion temperature in the animal cremation facility according to the second invention comprises a combustion chamber for burning an animal corpse, a fuel introducing device for introducing fuel into the combustion chamber, and a temperature sensor for measuring the temperature in the combustion chamber And a cooling water introducing device for introducing misty cooling water into the combustion chamber, wherein: (1) a start step of supplying fuel from the fuel introducing device and igniting the animal carcass; (2) An initial step of introducing the cremation fuel until the combustion temperature in the combustion chamber measured by the temperature sensor reaches a stable self-combustion temperature, (3) the combustion temperature of the animal carcass is a stable self-combustion temperature A self-combustion step for spontaneous combustion in a region, and (4) a cooling step for introducing mist-like cooling water when a combustion temperature of the animal carcass is equal to or higher than a combustion upper limit temperature. That.
Note that all of the steps (1) to (4) may be performed by a human, or some steps may be controlled by a computer. For example, a human may process (1) to (3), and only (4) may be controlled automatically by a computer.
According to the present invention, the atomized cooling water is introduced when the combustion temperature of the animal corpse reaches the predetermined combustion upper limit temperature, so that incomplete combustion can be prevented and a good combustion state is maintained. it can.

In the start step, the timing of introduction and ignition of the cremation fuel can be arbitrarily selected. For example, (1) the method of igniting after starting the introduction of cremation fuel, (2) the method of igniting simultaneously with the introduction of cremation fuel, (3) the introduction of cremation fuel after performing the ignition process Any of these methods can be employed.
The stable self-combustion temperature and stable self-combustion temperature range mean a temperature and temperature range in which the animal corpse can burn its own organism stably without receiving external fuel supply. This temperature (area) can be determined in consideration of factors such as the size of the combustion chamber, the material of the wall constituting the combustion chamber, and the type and size of the animal corpse. For example, when the combustion chamber is made of general refractory bricks and the animal carcass is a dog (about 10 to 40 kg), the stable self-combustion temperature region is about 700 ° C. to 900 ° C. (preferably 800 ° C. to It can be set to 850 ° C.).
When the cremation fuel is introduced in the initial step, either a continuous or intermittent method may be employed.

The upper limit of combustion temperature is the temperature at which an animal corpse burns at a temperature higher than that, causing abnormal conditions such as incomplete combustion, generating black smoke, and adversely affecting cremation equipment. Means. The combustion upper limit temperature can be determined in consideration of factors such as the size of the combustion chamber, the material of the wall constituting the combustion chamber, and the type and size of the animal corpse. For example, when the combustion chamber is constituted by general fire bricks and the animal carcass is a dog (about 10 to 40 kg), the upper combustion limit temperature can be set to 900 ° C. (preferably 1000 ° C.). .
In the cooling step, the amount of cooling water introduced is controlled in time (a method of controlling the amount of cooling water depending on the time while keeping the amount of cooling water introduced per unit time constant), controlling the number of times (in advance per introduction). It is possible to control by a method such as setting the amount of water and controlling the amount of cooling water according to the number of introductions), pressure control (a method of controlling the amount of cooling water depending on the pressure applied to the mist-like cooling water).

  ADVANTAGE OF THE INVENTION According to this invention, moderate temperature control at the time of combustion can be performed in the cremation equipment of an animal corpse.

It is a side view of equipment for cremation in this embodiment. It is a front view of the equipment for cremation. It is a side view of a cremation installation when an animal corpse is put into a combustion chamber. It is an algorithm which shows the control method of combustion temperature. It is a graph which shows the image of the temperature change during combustion. The dotted line shows the temperature change during cremation by the conventional method, and the solid line shows the temperature change during cremation by the control method of this embodiment.

Next, embodiments of the present invention will be described in detail with reference to the drawings. However, the technical scope of the present invention is not limited by the embodiments, and various modifications can be made without changing the gist. .
<Crematory equipment>
In FIG. 1 and FIG. 2, the trolley | bogie 1 which mounted the animal corpse D and the installation 20 for cremations were shown. Further, FIG. 3 shows a state in which the dolly 1 is carried into the cremation facility 20. The cart 1 is provided with a dish plate portion 2 that supports the animal corpse D, and a total of four legs 3 that hang from the front and rear and from the left and right on the lower surface side of the dish plate portion 2. At the lower end of each leg portion 3, a wheel 4 that can move the carriage 1 along the guide rail 5 is provided.

The cremation facility 20 is provided with a primary combustion chamber 24 and a secondary combustion chamber 22. A primary combustion burner 10 for introducing oil as fuel (and air) and an auxiliary burner are provided in each combustion chamber 22, 24. 11 and a secondary combustion burner 23 are provided. The outer wall 17 of the primary combustion chamber 24 is provided with a cooling water introduction device 12 that introduces the cooling water in the form of a mist. Further, the secondary combustion chamber 22 is provided with a temperature sensor 15 provided with a thermocouple for measuring the combustion temperature.
A loading door for loading the animal corpse D into the primary combustion chamber 24 is provided with a loading door 25 capable of opening and closing the primary combustion chamber 24 by moving in the vertical direction. In addition, blowers 21 and 16 that send air (oxygen) to the combustion chambers 22 and 24 are provided on the upper and side surfaces of the cremation facility 20.
In addition, a control board 32 (computer) that controls the cremation facility 20 is provided on the side surface (right side surface in FIG. 2) of the cremation facility 20. The control board 32 is connected to the temperature sensor 15, each burner 10, 11, 23, the cooling water introduction device 12, and the blowers 16, 21, and controls each device according to an algorithm described later.

<Control method for cremation equipment>
Next, a temperature control method when burning the animal corpse D using the cremation facility 20 configured as described above will be described with reference to FIGS. 4 and 5.
First, as shown in FIG. 3, with the animal corpse D to be burned placed on the carriage 1, it is carried into the primary combustion chamber 24 of the cremation facility 20. Next, initialization of the combustion method is performed using the control board 32 (S100). Here, the blower power of the blowers 16 and 21, the introduction amount / introduction speed of fuel introduced from each burner 10, 11 and 23, on / off control, the setting of the stable self-combustion temperature T 1 and the combustion upper limit temperature T 2, and temperature comparison The time interval for executing the steps, the amount of water introduced from the cooling water introducing device 28, and values such as on / off control are input.

Next, the combustion control operation by the control board 32 is started (S110: start step). Here, the blowers 16 and 21 are driven to perform ignition while introducing fuel from the burners 10, 11 and 23, and the animal corpse D is ignited. Next, the animal corpse D is burned while introducing fuel (S120). Next, the combustion temperature TP in the combustion chamber measured by the temperature sensor 15 and the stable self-combustion temperature T1 are compared at predetermined time intervals to evaluate whether or not TP1T1 (S130, S120 and S130). Constitutes the initial step). The initial step corresponds to the graph indicated by symbol A in FIG.
If TP ≧ T1, it is determined that the animal corpse D is in a state where it can continue to burn as it is, and the introduction of fuel from the burners 10, 11, 23 is stopped (S140). From here, the combustion temperature of the animal corpse D becomes a self-combustion step in which natural combustion is performed in the stable self-combustion temperature region T1 to T2. The self-combustion step corresponds to the graph shown by the symbol B in FIG.

Next, the combustion temperature TP and the combustion upper limit temperature T2 are compared at every predetermined time interval, and it is evaluated whether or not TP ≧ T2 (S150). Next, the combustion temperature TP and the stable self-combustion temperature T1 are compared at predetermined time intervals to evaluate whether or not TP ≦ T1 is satisfied (S160). In S150, when TP ≧ T2, mist-like cooling water is introduced from the cooling water introduction device 12 (S170: cooling step, which corresponds to a point indicated by symbol P in FIG. 5). In this cooling step, the combustion temperature TP is estimated to be a predetermined temperature (for example, about 100 ° C. to 200 ° C.) from the combustion upper limit temperature T2, and the combustion temperature TP is higher than the stable self-combustion temperature T1. ) To the extent that it is reduced, the burning of the animal corpse D is not stopped (fire extinguished). After the introduction of the cooling water (S170) one or more times, if the combustion temperature TP is lower than the stable self-combustion temperature T1 at S160 (TP <T1), the self-combustion of the animal cadaver D ends The temperature control process is completed.
As described above, according to the present embodiment, when the combustion temperature TP of the animal corpse D becomes equal to or higher than the predetermined combustion upper limit temperature T2, mist-like cooling water is introduced, so that incomplete combustion can be prevented. , Good combustion state can be maintained.

<Modification>
(1) According to the present embodiment, two combustion chambers, a primary combustion chamber and a secondary combustion chamber, are provided as combustion chambers. However, according to the present invention, the number of combustion chambers may be one or three or more. . In any case, the cooling water introduction device is preferably provided in the combustion chamber (primary combustion chamber) in which the animal corpse exists.
(2) According to the present embodiment, the temperature sensor is provided in the secondary combustion chamber. However, according to the present invention, the temperature sensor may be provided in the primary combustion chamber. However, it is generally preferable to provide the secondary combustion chamber at a higher temperature.
(3) According to the present embodiment, petroleum is used as the fuel. However, according to the present invention, gas can also be used as the fuel.
(4) According to the present embodiment, the cooling water introducing device is provided separately from the fuel introducing device. However, according to the present invention, a commercially available combustion facility provided with two burners in advance can also be used. In this case, since one of the burners can be used as the cooling water introduction device, it is not necessary to install a new device.

10 ... Primary combustion burner (fuel introduction device)
11 ... Auxiliary burner (fuel introduction device)
12 ... Cooling water introduction device 15 ... Temperature sensor 20 ... Cremation equipment 22 ... Secondary combustion chamber (combustion chamber)
23 ... Secondary combustion burner (fuel introduction device)
24 ... Primary combustion chamber (combustion chamber)
D: Animal corpse TP: Combustion temperature T1: Stable self-combustion temperature T2: Combustion upper limit temperature

Claims (2)

A combustion chamber for burning animal carcasses, a fuel introduction device for introducing fuel into the combustion chamber, a temperature sensor for measuring the temperature in the combustion chamber, and a combustion temperature measured by the temperature sensor and a combustion upper limit preset. Cooling water introduction that reduces the combustion temperature in the combustion chamber to a stable self-combustion temperature region by introducing mist-like cooling water into the combustion chamber when the combustion temperature exceeds the upper combustion limit temperature. An animal cremation facility for animals for cremation and funeral , comprising
Two fuel introduction devices are provided in advance, and one of them is used as the cooling water introduction device, and the cooling water introduction device has a height at which the fuel introduction device introduces fuel. It is provided to introduce the mist-like cooling water at a position higher than the position, the combustion upper limit temperature is 1000 ° C., the stable self-combustion temperature region is 700 ° C. to 900 ° C., and the animal carcass Equipment for animal cremation that is a dog that contains a lot of oil . A combustion chamber for burning a dog corpse containing a large amount of oil, a fuel introduction device for introducing fuel into the combustion chamber, a temperature sensor for measuring the temperature in the combustion chamber, and a position where the fuel introduction device introduces fuel A method for controlling the combustion temperature in a dog cremation facility for a dog performing cremation and funeral , comprising a cooling water introduction device for introducing mist-like cooling water into the combustion chamber at a high position ,
(1) Start step of supplying fuel from the fuel introduction device and igniting the dog carcass, (2) Until the combustion temperature in the combustion chamber measured by the temperature sensor reaches a stable self-combustion temperature of 700 ° C. the initial step of introducing the cremation fuel, (3) combustion temperature of the dog corpses, self-combustion step of spontaneous combustion in a stable self-combustion temperature range between 700 ° C. to 900 ° C., (4) the dog cadavers A method for controlling the combustion temperature in a dog cremation facility, comprising a cooling step of introducing mist-like cooling water when the combustion temperature is equal to or higher than a combustion upper limit temperature of 1000 ° C.

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