METHOD OF PRESUMING LOW HEATING VALUE OF COMBUSTIBLE WASTE AND PRESUMING HEATING VALUE OF COMBUSTIBLE PART OF GARBAGE OF GARBAGE INCINERATOR

摘要

PROBLEM TO BE SOLVED: To enable the stable automated incineration of garbage by acquiring only a low heating value of combustibles based on the material balance for a long time and presuming the low heating value of garbage. ;SOLUTION: Acquiring the heating value of combustibles and the heating value of combusted garbage based on the quantity of combustibles, quantities of gas components included in exhaust gas at the exit of garbage incinerator are calculated assuming the water content in the combusted garbage is zero (S3). Based on the calculated quantities of gas components, the enthalpy of the exhaust gas is calculated. Then, the quantity of water in the combusted garbage is calculated (S4). The quantity of water in the garbage is calculated repeatedly until it converges to a predetermined quantity based on the quantity of water in the garbage (S3-S5). Assuming the ratio of ash component to be a certain value, the quantity of combustible part of the garbage is calculated based on the oxygen density in the air and measured value of combustion air (S2), together with the quantity of water in the garbage, the garbage processing speed is calculated and the combusted quantity of the garbage is obtained (S6). Then, based on the heating value of the combustibles, quantity of water in the garbage and the quantity of combusted garbage, the low heating value of the combusted garbage is calculated (S7).;COPYRIGHT: (C)1999,JPO