Waste disposal systems and waste disposal methods

Abstract

The system accurately monitors the condition of the waste on the grate and controls the combustion of the incinerator based on that monitoring. [Solution] The waste treatment system virtually divides the waste on the grate into multiple regions, derives the amount of waste and the moisture content of the waste for each region, identifies the amount of waste in the drying stage of the waste incinerator based on the derived amount, and performs height control to adjust the height of the waste in the drying stage by changing the rate at which the waste supply device supplies the waste and the reciprocating speed of the grate in the drying stage according to the identified amount, and performs combustion control to adjust the rate at which the waste supply device supplies the waste, the reciprocating speed of the grate in the drying stage, and the amount of combustion air supplied to the drying stage so as to keep the combustion start point of the waste constant based on the derived amount and moisture content.

Claims

1. Image data generated from thermal image information captured of the area containing the waste inside a waste incinerator equipped with a grate for moving the waste is acquired. The process data in the aforementioned waste incinerator is acquired, The waste on the grate is virtually divided into multiple regions, at least along the direction of transport of the waste. Based on the acquired image data, the amount of waste present on the grate is derived for each of the multiple regions. Based on the acquired process data, the amount of waste present on the grate, the amount of waste moved, and the temperature of the waste, the moisture content of the waste for each of the multiple regions is derived. The system performs at least one of the following controls: specifying the amount of waste present in the drying stage of the waste incinerator based on the derived amount, adjusting the height of the waste in the drying stage by changing the rate at which the waste supply device that supplies the waste to the waste incinerator supplies the waste and the reciprocating speed of the grate corresponding to the drying stage according to the specified amount; and calculating a target moisture content to keep the combustion start point of the waste constant based on the derived amount, calculating the moisture content of the waste based on the derived amount and the moisture content, and adjusting the rate at which the waste supply device supplies the waste, the reciprocating speed of the grate corresponding to the drying stage, and the amount of combustion air supplied to the drying stage according to the calculated target moisture content and the actual moisture content. Waste disposal system.

2. The height control involves identifying the amount of waste present in the combustion stage of the waste incinerator based on the amount present, and adjusting the height of the waste in the combustion stage by changing the reciprocating speed of the grate corresponding to the combustion stage according to the identified amount. The waste treatment system according to claim 1.

3. The combustion control adjusts the reciprocating speed of the grate corresponding to the combustion stage of the waste incinerator and the amount of combustion air supplied to the combustion stage, based on the target moisture content and the amount of moisture content. The waste treatment system according to claim 1.

4. A method for processing waste in a waste incinerator equipped with a grate for moving waste, The steps include: acquiring process data in the aforementioned waste incinerator; The steps include: dividing the waste on the grate into a virtual number of regions at least along the direction of transport of the waste, and acquiring image data generated from thermal image information obtained by imaging the region containing the waste within the number of regions; Based on the acquired image data, the first step is to derive the amount of waste present on the grate for each of the multiple regions, A second step of deriving the moisture content of the waste for each of the multiple regions based on the acquired process data, the amount of waste present, the amount of waste moved, and the temperature of the waste derived in the first step, A step of controlling at least one of the following: specifying the amount of waste present in the drying stage of the waste incinerator based on the amount of presence derived in the first step, and adjusting the height of the waste in the drying stage by changing the rate at which the waste supply device that supplies the waste to the waste incinerator supplies the waste and the reciprocating speed of the grate corresponding to the drying stage according to the specified amount of presence; and calculating a target moisture content to keep the combustion start point of the waste constant based on the amount of presence derived in the first step, calculating the moisture content of the waste based on the amount of presence derived in the first step and the moisture content derived in the second step, and adjusting the rate at which the waste supply device supplies the waste, the reciprocating speed of the grate corresponding to the drying stage, and the amount of combustion air supplied to the drying stage according to the calculated target moisture content and the amount of moisture; A waste disposal method comprising the following features.

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