Fremgangsmåte til måling av konsentrasjonen av skadelige gasser i röykgasser i et varmekraftanlegg ved fotospektrometri

摘要

A method for measuring the concentration of harmful gases in flue gases through a heat-producing plant that includes a combustion space and a device located downstream of the combustion space, the device includes tubes, through which for instance water, steam or air may pass in order to be heated by heat transfer from flue gases formed during the combustion. In a region near the tube device, at least one beam of ultraviolet light is emitted from a light emitter at one side of a flue gas duct to a light receiver located at the opposite side of the duct, which light emitter is connected to a spectrometer cooperating with a computer unit, in which spectrometer the light is divided spectrally.