A METHOD OF REGULATING THE FLUE GAS TEMPERATURE AND VOLTAGE SUPPLY IN AN ELECTROSTATIC PRECIPITATOR FOR A CEMENT PRODUCTION PLANT

摘要

The invention relates to a method of regulating the flue gas temperature in a cement production plant comprising a kiln, a flue gas conditioning device, a mill, and an electrostatic precipitator, whereby the flue gas is passed from the kiln through the conditioning device and is from there conveyed either via the mill or directly to the electrostatic precipitator, whereby a measurement of the flue gas temperature is carried out in the flow path of the gas before the electrostatic precipitator, and whereby, as a response to this temperature measurement, the flue gas if the temperature is too elevated, whereby the measurement of the flue gas temperature is carried out before the gas is introduced into the conditioning device, that a flow measurement of the flue gas is carried out, and that, on the basis of this temperature measurement and flow measurement, a required amount of water is determined for cooling the flue gas to a desired temperature, and that this amount of water is supplied to the flue gas. The invention also relates to a cement production plant comprising a kiln, a conditioning device, a mill, an electrostatic precipitator, means for determining the gas temperature before the conditioning device, means for determining the magnitude of the gas flow, and means for determining a required amount of water for reducing the gas temperature from the value measured to a desired value.