JPH0476058B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention is used in a waste incineration plant to identify whether the quality of waste temporarily stored in a waste pit, especially the moisture content, is uniform throughout the pit. This relates to a method for identifying waste quality distribution.

Conventionally, in a waste incineration plant, the quality of the waste in the waste pit, particularly whether the moisture content is uniform, has been determined by relying on the intuition of the operator of the crane installed in the waste pit. especially,
When the garbage crane is operated automatically, the garbage is only transferred and mixed, and the garbage quality is not identified at all, so it has not been possible to eliminate variations in the garbage quality.

When waste of such uneven quality is then put into an incinerator, the combustion becomes unstable, such as pre-burning and unburning.Therefore, it is necessary to regularly utilize residual heat from incineration, which has been in increasing demand in recent years. I couldn't do it anymore.

Purpose of the Invention This invention was made in view of the above-mentioned circumstances, and it detects the temperature distribution in the garbage pit and uses the temperature distribution to determine the homogenization of the garbage in the pit, especially the homogenization of moisture. It is an object of the present invention to provide a method for identifying the distribution of garbage quality in a garbage pit.

Structure of the Invention The waste quality distribution identification method according to the present invention measures the temperature of waste in a waste pit by dividing the waste pit into a plurality of parts using a plurality of non-contact temperature sensors attached to the periphery of the waste pit, the ceiling, or a crane. Detects each category and throws garbage in the high temperature category into the incinerator.
This method is characterized by homogenizing the moisture content by stirring or storing the waste in the low-temperature category.

Infrared sensors are common as non-contact temperature sensors. Additionally, multiple temperature sensors are typically
Mounted on the periphery of the garbage pit, on the ceiling or on the crane.

In a preferred embodiment of the present invention, colors corresponding to temperature detection signals from a plurality of temperature sensors are displayed on a display device to create a color-coded image.

Once the garbage in the garbage pit has been stored for the required time,
The moisture in the waste is equalized, the waste ferments, generates heat, and the temperature of the waste rises. Therefore, by detecting the distribution of this fermentation heat using the above-described method according to the present invention, it is possible to identify whether the waste in the waste pit is homogenized, and in particular whether the water content is homogenized.

Embodiments and Effects Next, embodiments of the present invention will be specifically described.

Embodiment 1 In FIG. 1, a plurality of fixed infrared sensors 2 are attached to the periphery of a garbage pit 1 at required intervals. The fixed infrared sensor 2 is configured so that its direction can be changed up, down, left, and right at a required angle as necessary. Therefore, all of the plurality of divisions 1a of the garbage pit 1 are covered by the plurality of fixed infrared sensors 2. In addition, the first
In the figure, 3 is a platform, 4 is an incinerator garbage input hopper, 5 is a hopper floor, and 6 is a crane.

In the garbage pit 1 having the above structure, the garbage stored in the pit 1 for more than one day usually generates heat due to fermentation, and its temperature increases. Therefore, the temperature of the garbage in the garbage pit 1 is detected by a plurality of fixed infrared sensors 1. In this way, the plurality of fixed infrared sensors 2 are used to divide the garbage pit 1 into a plurality of divided sections 1.
The temperature is detected for each section a, and a color corresponding to the obtained temperature detection signal is displayed on the display device to create a color-coded image showing the temperature distribution for each division 1a in the garbage pit 1.

Next, based on the color-coded image created in this way, the homogenization of the garbage, especially the homogenization of moisture, is identified from the temperature distribution condition in the garbage pit 1.

Then, based on this identification, a plurality of division categories 1
Among the garbage in a, garbage with a high temperature, that is, garbage with uniform moisture content, is preferentially put into the incinerator and burned to maintain stable combustion.

On the other hand, the garbage whose moisture content has not yet been homogenized can be stirred by the crane 6 to make the distribution of moisture uniform.
Alternatively, the waste is stored in the pit 1 until the moisture becomes uniform, that is, until the temperature rises.

When the crane 6 is operated automatically, by analyzing the color-coded image of the temperature distribution, it is possible to instruct the priority feeding category of garbage to the incinerator or the category where garbage should be stirred during automatic operation.

Embodiment 2 In FIGS. 2 and 3, a plurality of movable infrared sensors 7 are attached to a crane 6 traveling over a garbage pit 1 at required intervals.

The garbage quality distribution identification operation is the same as in the first embodiment.

Effects of the Invention As described above, according to the present invention, the temperature of the garbage in the garbage pit is detected by a plurality of non-contact temperature sensors installed at predetermined positions in the garbage pit. Depending on the waste temperature, it is possible to identify the homogenization of the waste in the waste pit, especially the homogenization of moisture. Therefore, based on this garbage type identification, by preferentially throwing garbage whose moisture content is uniform into the incinerator, stable combustion can be maintained. In addition, for garbage whose moisture content has not yet been homogenized, a decision can be made to either stir the garbage to homogenize the moisture distribution, or to store the garbage in the pit until the moisture content is homogenized. Furthermore, by monitoring the temperature of the garbage in the pit, it is possible to know the occurrence of a fire in the pit and the unextinguished portion of the pit when it is extinguished.

Moreover, the temperature sensor is attached to the periphery, the ceiling, or the crane, and the garbage pit is divided into multiple divisions, and the temperature is detected in each division, and the garbage in the high temperature category is thrown into the incinerator, and the garbage in the low temperature category is Since the water is homogenized by stirring or storing it as is, the above-mentioned classification of waste types can be carried out more reliably.

[Brief explanation of the drawing]

1 is a plan view of the garbage pit, FIG. 2 is a partial plan view of the garbage pit, and FIG. 3 is a sectional view taken along the line - in FIG. 2. 1...garbage pit, 1a...division, 2...
Fixed infrared sensor, 6... Crane, 7... Movable infrared sensor.

Claims (1)

[Claims] 1 The temperature of the garbage in the garbage pit is detected in each of the multiple divisions of the garbage pit by multiple non-contact temperature sensors attached to the periphery of the garbage pit, the ceiling, or the crane, and the garbage in the high temperature category is detected. A method for identifying the distribution of garbage in a garbage pit, which is characterized in that the garbage is placed in an incinerator and the garbage in the low-temperature category is stirred or stored as is to homogenize the moisture content.