FIELD: chemical industry.
SUBSTANCE: present invention relates to a system and a method for analyzing waste gas of a plant for producing urea, as well as a plant for producing urea, equipped with a system for analyzing off-gas. System (2) for analyzing waste gas of apparatus (1) for producing urea includes Raman spectroscopy (22); sampling branch pipe (24), which connects spectroscope (22) with main line (20) of apparatus (1) for producing urea, for conducting analyzed sample (25) of gas sample from line (20) to spectroscope (22); and temperature control device (26) controlled by temperature controller (27) and acting on at least one heat treatment section (28) of branch pipe (24) for correction of sample flow temperature (25) circulating in branch pipe (24).
EFFECT: technical result is increase of measurement accuracy with preservation of mechanical integrity of device and its dimensions.
16 cl, 2 dwg
