DUST CONCENTRATION MEASURING DEVICE FOR GENERATED GAS OF GASIFICATION FURNACE, COMBUSTION CONTROL DEVICE, AND GASIFICATION FURNACE EQUIPMENT WITH EXHAUST GAS TREATMENT CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To control a combustion treatment system and an exhaust gas treatment system of gasification furnace equipment by catching sudden change of char of a generated gas of a gasification furnace on the basis of the change of a decreasing rate of light-receiving intensity of laser. SOLUTION: As an index to catch the sudden change of char, the laser is applied to the generated gas of the gasification furnace by a laser analyzer 2 in a former stage of a combustion chamber 3, the decreasing rate of the light-receiving intensity of the received laser is converted into char concentration to be used as the index, a flow rate of the combustion air supplied to the combustion chamber 3 is continuously changed in response to the char concentration, and the amount of chemical supplied by a chemical supplying device 19 is continuously changed by hydrogen chloride elimination control and sulfur oxide elimination control of the exhaust gas in response to a change rate of the char concentration. COPYRIGHT: (C)2011,JPO&INPIT