VERFAHREN ZUR KONTINUIERLICHEN ANALYTISCHEN BESTIMMUNG VON KOHLENMONOXID IN ABLUFT

摘要

A continual process to determines the concentration of carbon monoxide in air, within a confined space holding a bulk charge of a biological mass. In the process, air blows through the bulk charge. The quantity or concentration of carbon monoxide emerging from the bulk charge is continually monitored by a sensor and compared with a maximum permissible threshold value. Should the threshold value be exceeded, the supply of fresh air is terminated. The basic quantity of carbon monoxide is 10 liters/min, and the basic concentration is measured in relation to the incoming air of 1 to 400 ppm. Should the ventilation air be terminated and the concentration of carbon monoxide remain constant at 10 liters/min or increase especially beyond 20 liters/min, or the CO concentration in effluent air exceed 2-800 ppm, the surface of the bulk solid material is covered with a layer of fire-fighting foam. The CO measurements are taken at a number of different sensor stations located in the air inlet and air outlet zones. The bulk solid temperature is monitored by thermal infra-red cameras. The presence of dust is measured and compared with maximum threshold values.