JPH04260484A - Disposal heat treatment apparatus - Google Patents

Abstract

PURPOSE:To effextively and sanitarily treat waste refuse without discharging the harmful gas generated by the heat treatment of waste refuse to the outside. CONSTITUTION:In a disposal heat treatment apparatus 10 for the heat treatment of waste refuse 18, the waste refuse 18 is heat-treated for a predetermined time at predetermined temp. in the hermetically closed housing of a treatment part 12 and substances generating harmful gas B are burnt. A predetermined amount of water is stored in a gas dissolving water tank 14 and the gas B generated by heating or combustion is passed through the water in the water tank and dissolved therein so as not to be discharged to the outside. By dissolving the harmful gas B in said water, said gas can be converted to a harmless gas D. The generation of air pollurion due to the gas B is reduced and a large amount of the waste refuse 18 generated from facilities such as a hospital or a research institute can be reduced in volume by heat treatment and can be effectively and sanitarily treated. Further, the waste 18 can be simply and efficiently treated without exerting adverse effect on a human body or natural environment.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste treatment apparatus, and more particularly to a disposable heat treatment apparatus for heat treating waste or substances that generate harmful gases when heated or incinerated.

0002

BACKGROUND OF THE INVENTION In the medical field, medical equipment and consumables are widely used as medical technology advances. For example, injection needles and their plastic cylinders,
They are also used in large quantities in hospitals and research institutes that handle instruments such as consumables in glass containers. Such used instruments are mainly disposed of by incineration.

[0003] Particularly in hospitals, large quantities of this type of equipment are handled, and along with this, large quantities of used (
Disposable) equipment is occurring. However, these cannot be reused because they contain the human body, that is, the test subject's blood, test reagents, and in some cases pathogenic bacteria.
Generally, waste is treated by incineration.

That is, in large quantities, for example, plastic instruments are incinerated, and stainless steel injection needles are heat-treated and then cut into small pieces either manually using nippers or with a machine such as a cutting device. things are being done. As a result, the used instruments are treated and disposed of as industrial waste.

[0005]

[Problem to be Solved by the Invention] However, with the conventional processing method described above, such used medical instruments cannot be efficiently disposed of because they are generated in large quantities at once. That is the reality.

[0006] Particularly in small-scale hospitals with about 20 beds, the current situation is that an amount equivalent to, for example, one large plastic bucket is generated per day. Furthermore, even in a large-scale hospital with about 600 beds, this bucket would be enough for about 20 cups. Therefore, for example, it is very difficult to cut into pieces, either manually or mechanically, as described above, such as injection needles.

[0007] In addition, in incineration, a furnace is used to burn the waste, and in this incineration process, harmful gases (for example, smoke due to incomplete combustion) are removed from waste such as used plastic appliances. This caused air pollution, bad odors, and harmful effects on the human body.

[0008] Furthermore, when disposing of the above-mentioned waste such as injection needles, there is a possibility that the disposer or the cleaner may be injured, and in the worst case,
Pathogens attached to the injection needle may cause secondary infection. Therefore, it is possible that infectious diseases such as ATLA, AIDS, and hepatitis may be caused.

[0009] The above has become a serious sanitary and social problem at present, and especially regarding waste,
Pollution has become a problem, and recently it has been featured particularly on TV and in newspapers. For example, a newspaper article in the Nihon Keizai Shimbun dated June 15, 1989 (Thursday) describes the issue of medical waste disposal. As described above, conventionally, there has been no apparatus that can easily, effectively, and hygienically process the above-mentioned waste.

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to heat-treat waste, dissolve the generated gas in water, and prevent the release of harmful gases to the outside.
Thereby, it is an object of the present invention to provide a disposable heat treatment device that can eliminate air pollution and adverse effects on the human body, and can effectively and sanitarily treat waste.

[0011]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a waste heating device that heat-treats waste at a predetermined time and temperature in a sealed housing, and and a gas passing water tank that allows harmful gases generated from the waste to pass through the water in the heated container, and dissolves the gas in the water in the water tank to prevent the harmful gases from being discharged to the outside. , which is characterized by being converted into a harmless gas.

Further, according to the present invention, there is provided a combustion device for burning fuel and a substance that generates gas by combustion, and a gas passage device for passing the combustion gas generated by the combustion through water in a container in which a predetermined amount is accumulated. It is characterized by having a water tank, and dissolving the gas in the water in the water tank to prevent harmful combustion gas from being discharged to the outside.

[0013]

[Operation] With the above configuration, according to the present invention,
The waste heat treatment apparatus heat-treats the waste within a sealed casing at a predetermined time and temperature. Then, the gas generated from the heat-treated waste is passed into the gas passage tank. Thereby, the gas is passed through the water accumulated in the gas-passing water tank and dissolved, and as a result, it is possible to prevent the gas generated by the heat treatment from being discharged to the outside.

Furthermore, according to the present invention, instead of the waste heat treatment device, the combustion treatment device can perform combustion treatment on fuels and substances that generate gas when burned. It is also possible to dissolve the gas in the water stored in the gas-passing water tank.

[0015] As described above, it is possible to effectively and hygienically treat waste or fuel and substances, and also to prevent air pollution, which would have a negative impact on the human body and the natural environment. This eliminates the aforementioned sanitary and social pollution problems associated with waste.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view of a schematic configuration showing the principle of a disposable heat treatment apparatus according to the present invention. The characteristic feature of the present invention is that waste is heat-treated in a sealed enclosure at a predetermined time and temperature, and harmful gases generated from the waste are added to the water in the container that has accumulated in a predetermined amount. through which the gas is dissolved in the water in the aquarium.

[0017] As a result, it is possible to prevent harmful gases from being discharged to the outside. The basic operating principle of this embodiment will be explained below with reference to FIG. In the figure, a disposable heat treatment device 10 is composed of a heat treatment section 12 including a sealable sliding heating lid 16 and a gas dissolving water tank 14.
Then, the waste 18 is put into the sealed heat treatment section 12 and heated there by the electromagnetic plate 20 and the heater 22.

That is, the interior of the heat treatment section 12 can be completely sealed by closing the sliding heating lid 16 as shown by arrow A in the figure. The bottom surface of the heating treatment section 12 is surrounded by a heater 22, and the four inner walls are surrounded by electromagnetic plates 20, so that the waste 18 can be directly heated without being burned.

As a result, the waste materials 18, such as used injection needles, glass, and cotton, are heated, and plastic instruments and the like are melted. By such heat treatment without combustion, harmful gas is generated from the waste 18 as shown by arrow B in FIG.

[0020] This harmful gas is led to the gas-dissolved water tank 14 via the duct 24. This is the arrow C shown in the figure.
As shown in the figure, the gas is forcibly sucked from the duct 24 through the gas suction pipe 26, which is a pipe, by the suction fan 28. However, since the gas suction pipe 26 is submerged in water as shown in the figure, The harmful gas B is cooled by the water.

As described above, the harmful gas B is cooled by water while flowing inside the gas suction pipe, and is finally discharged from the outlet 26a of the gas suction pipe 26, forming bubbles and passing through the water. . Therefore, the harmful gas B will be dissolved in the water accumulated in the aquarium, and will be converted into odorless and harmless gas D on the water surface. As described above, according to the operating principle of the disposable heat treatment according to the present embodiment, it is possible to dissolve the harmful gas in the water in the water tank and prevent the harmful gas from being discharged to the outside.

Next, an example of the operation control of the disposable heat treatment apparatus according to this embodiment will be explained using FIG. 2. This second
The figure shows a state in which a control circuit 30, an operation panel 32, and a power supply circuit 34 are connected to the disposable heat treatment apparatus 10 of FIG. 1 described above.

That is, the heating temperature of the heat treatment section 12 and the suction fan 2 provided in the gas dissolving water tank 14
The control circuit 30 for automatically controlling the motor 28a and the water level of 8 has a predetermined operation control program in a memory, for example, and is connected to the heating processing section 12 via the power supply circuit 34. and controls the heating of the electromagnetic plate 20 and heater 22, which are heating sources.

Furthermore, this control circuit 30 is connected to the gas dissolving water tank 14 and controls ON/OFF of a suction fan motor 28a located on the upper top plate of the water tank, and also controls the suction fan motor 28a provided on the side wall of the water tank. The detection signal 36a from the water level sensor 36 is input, and based on this, the water supply and drainage valve 38
, 40 to control the amount of water in the tank to a constant value.

[0025] An operation panel 32 is connected to the control circuit 30, which is input means for the user to operate the apparatus according to a predetermined procedure. This operation panel 32
is activated by the user's button operation on the panel.
An operation control signal 32a is output to the control circuit 30, and the control circuit 30 outputs the control signal 30a to the power supply circuit 34 and the control signal 30b to perform the desired operation corresponding to the button operation. The suction fan motor 28
a, a control signal 30c is output to the intake/discharge valves 38, 40.

Therefore, the heat treatment section 12 and the gas dissolving water tank 14 are controlled by the operation panel 3 according to the control signals.
Control is automatically performed according to instructions from 2. next,
An example of a series of operation controls in this embodiment will be described in detail.

First, the user presses the O button on the operation panel 32.
Press the N/OFF button a to start up the device. Then, press the open/close button b, open the sliding heating lid 16, and put a predetermined amount of waste 18 into the heat treatment section 12 (for example, up to the solid line shown in the figure). Of course, the waste 18 is Used instruments such as plastic containers and metal syringe needles, absorbent cotton, other drug bottles, cloth and paper with blood, etc. on them, without separating them.
Mix and put into the furnace.

Next, the open/close button b is pressed again to close the sliding heating lid 16, which can be opened and closed as shown by arrow A in FIG. 2, thereby sealing the inside of the heating processing section 12. Here, set the heating temperature and heating time setting knobs c and t on the operation panel 32, for example, when the temperature inside the furnace is about 150.
The heating time is set to 200 degrees, and the heating time of a built-in timer is set to, for example, 2 to 3 hours.

Furthermore, the user presses the AUTO button d to start up the device. As a result, from the operation panel 32,
An operation control signal 32a is output, and the control circuit 30
Upon receiving the signal, it outputs a control signal 30a. As a result, the power supply circuit 34 supplies, for example, several kilowatts of power to the heating source.

The control circuit 30 also receives information from the water level sensor 36 (detection signal 36a) and controls the opening and closing of the water supply and drainage valves 38 and 40. That is, when the amount of water is large, the drain valve 40, which is closed, is opened, and when the amount of water is small, the water supply valve 38, which is closed, is opened. This ensures that the optimum water level is always maintained.

As described above, the waste 18 in the furnace is
As mentioned above, heat treatment is performed at 150 to 200 degrees for 2 to 3 hours, and during this heating, for example,
Plastics and the like are melted, which generates a unique harmful gas B. Furthermore, metals and the like are heated to high temperatures, which also generate harmful gases.

However, by using the heat treatment conditions of the set temperature and time as described above, pathogenic bacteria and the like can be reliably sterilized and extinguished. The generated harmful gas then rises to the lid inside the furnace, is guided to the duct 24, and is guided to the gas suction pipe 26.
passes through the pipe. That is, as shown in FIG. 2, this pipe is arranged in a zigzag pattern in the vertical direction in the water tank, and the harmful gas generated in the heat treatment section 12 flows through the pipe by suction from the suction fan 28. B is distributed.

[0033] Therefore, the harmful gas B is cooled by the water in the water tank by flowing through the pipe. Then, the cooled harmful gas B is transferred to the gas exhaust port 26.
It is discharged from the aquarium and passes through the water in the tank as bubbles. As shown in the figure, by raising air bubbles from the bottom of the tank to the water surface, the harmful gases are dissolved in the water.

As a result, the harmful gas B is odorless and odorless on the water surface. The gas D becomes harmless and accumulates, and the gas D is released to the outside by opening the exhaust valve 42. Of course, as the harmful gas B is dissolved in the water, the water in the water tank will contain harmful components and will become dirty in proportion to the amount of waste 18 being heated. Sometimes, for example, by automatically opening the drain valve 40 using the control circuit 30, the wastewater can be discharged from the drain port 40a.

Further, the odorless and harmless gas D remaining on the water surface can also be discharged from the exhaust port 38a by opening the exhaust valve 38 in the same manner. As described above, by performing a series of heating controls, the waste 18 in the furnace is reduced to 18' as shown by the broken line arrow in the figure (dotted chain line in the figure) after the heat treatment. .

[0036] Here, the waste 18' is naturally cooled for about 2 to 3 hours, whereby resins and metals are separated without sticking together. Of course, in order to further shorten the cooling time and shorten the processing time, for example, a cooling device may be provided in the heat processing section 12.

In this way, the control circuit 30 automatically performs a series of controls in response to commands from the operation panel 32 from the user, and when the predetermined heating control is completed, the device automatically stops and the operation is resumed. The LAMP (lamp) e on the panel 32 lights up to notify the end (the time required for operation control from the start of this device after the waste is input to the end of natural cooling is approximately 4 to 5 hours). .

Furthermore, according to the device of this embodiment, since a timer is provided inside the operation panel 32, by using this, it is possible to operate the device, for example, at night when electricity rates are low. , it is possible to use time effectively and operate the device in an energy-saving manner.

As shown above, the waste 18' heat-treated in the furnace can be easily separated into resins (plastics) and metals, and then disposed of as industrial waste. be able to. Further, the sewage and gas D remaining in the water tank are disposed of outside through the drain/exhaust valves 40 and 42, but the sewage can be treated as industrial waste. Further, the gas D is odorless and harmless, so there is no problem even if it is discharged.

Furthermore, according to the heat treatment apparatus of this embodiment, it is possible to downsize as shown in FIG. For example, it can be installed directly at the site where waste is generated. On the other hand, in large-scale hospitals with over 600 beds, on the other hand, large-scale plants can also be used.

Note that the disposable heat treatment apparatus 10 of this embodiment
According to the above, the structure is very simple as shown in the figure, so the main body of the device can be easily constructed from a small size for home use to a large size for commercial use. Further, in this embodiment, a case is shown in which one heat treatment section 12 and one gas dissolving water tank 14 are provided, but it is also possible to provide a plurality of each. Further, according to the present embodiment, the waste 18 has been explained using medical equipment as an example, but of course, it can also be applied to general household items such as metals and plastics, consumable equipment, kitchen garbage, etc. .

Furthermore, although this embodiment has been described as a heat treatment apparatus, it can also be used as a combustion treatment apparatus instead. That is, for example, exhaust gas discharged from an automobile as a combustion treatment device, or a gasoline engine for a vehicle, a diesel engine, etc. may be introduced to a gas dissolving water tank as described above, whereby the exhaust gas may be passed through water and dissolved therein. can.

Specifically, the present device may be provided on the exhaust side of the engine, at the exhaust manifold (octopus leg), so as to be miniaturized and integrated with the engine. Of course, this combustion processing device is not limited to the above-mentioned engine, and may be any object that generates smoke or gas by combustion, such as cigarette smoke, smoke from a heating combustion device when cooking grilled meat, fish, etc. However, it is applicable and can be used effectively.

[0044]

[Effects of the Invention] As described above, according to the disposable heat treatment apparatus according to the present invention, gas generated from waste by heating is dissolved in water, thereby preventing the gas from being discharged to the outside. becomes possible.

[0045] This eliminates air pollution caused by the gas, and reduces the amount of waste generated from hospitals, research institutes, and other facilities to 1/5 to 1/5 of the amount at the time of input.
The amount can be reduced to 10, which eliminates the hassle of disposal and enables effective and hygienic processing.

As a result, waste can be easily and efficiently disposed of without adversely affecting the human body or the natural environment.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing the basic principle of a disposable heat treatment apparatus according to the present invention;

FIG. 2 is a configuration diagram showing an example of the disposable heat treatment apparatus according to the present example.

[Explanation of symbols]

10...Disposable heat treatment equipment 12...heat treatment section 14...Gas dissolution water tank 16...Sliding heating lid 18...Waste 20...electromagnetic plate 22... Heater 26...Gas suction pipe 26a...Gas exhaust port 28...Suction fan 30...control circuit 32...Operation panel 34...Power supply circuit 36...Water level sensor 38...Water supply valve 40...Drain valve 42...exhaust valve B, C...Harmful gas D...Harmless gas

Claims (2)

[Claims] 1. A waste heating device that heats waste at a predetermined time and temperature in a sealed casing, and a waste heating device that heats waste at a predetermined temperature for a predetermined time, and injects gas generated from the waste into a predetermined amount of water in a container. 1. A disposable heat treatment device comprising: a water tank through which a gas is passed; the gas is dissolved in water in the water tank, and the gas is prevented from being discharged to the outside. 2. A combustion device that combusts fuel and substances that generate gas by combustion, and a gas passage tank that allows the combustion gas generated by the combustion to pass through water in a container in which a predetermined amount is accumulated. . A disposable heat treatment apparatus, characterized in that the gas is dissolved in water in a water tank and the gas is prevented from being discharged to the outside.