Investigation of Pyrogas Cooling in a Packed Scrubber with a Regular Packing

Pyrogas cooling in a packed scrubber having a regular packing with triangular and trapezoidal corrugations instead of sequential cooling in air and water coolers was studied. According to modeling results, heat transfer coefficients in water-cooled scrubbers are 1.5-2 orders of magnitude higher in comparison with pyrogas-cooling air and water coolers. The hydraulic resistance of the scrubber is an order of magnitude lower than that of air and water coolers. The number of air and water coolers used to cool scrubber-sprinkling water decreased by 10 and 16 times, respectively, compared to the number of direct pyrogas cooling devices. Power consumption for driving air cooler fans decreased by 12 times. Analysis of the dependence of coefficients of heat transfer in the scrubber on heat exchange surface showed that a decrease in specific surface of the packing will lead to a decrease in hydraulic resistance of the scrubber and an increase in heat transfer coefficient in proportion to the decrease in specific surface of the packing by a factor of 0.9.