Process for regulating isolated factors or all factors that influence combustion on a combustion grid

摘要

To implement a method of controlling individual or all the parameters influencing the combustion on a grate of a furnace, there is provided in the first place a radar measurement arrangement (22) which serves for detecting the three-dimensional distribution of the fuel mass on at least one preferred region of the grate of the furnace. Next to this, an infra-red camera (23) is provided, which provides information on the combustion behaviour of the fuel situated on the grate of the furnace. With the aid of the measured variables from these two arrangements, manipulated variables can be derived in a control unit for influencing the grate speed, the charging arrangement, the primary-air quantity, the primary-air composition, the secondary-air quantity, the secondary-air composition, the speed of the slag roller and the temperature of the air-preheating arrangement, in order thus to be able to adapt the grate capacity to the steam capacity requirement. At the same time, in addition to an improvement of the solid combustion on the grate, a positive influence on the waste gases, for example with regard to the formation of uncombusted gas components and nitrogen oxides, is also possible. IMAGE