Application Analysis for the Operating Parameters of Hollow Ring Tube-shell Heat Exchanger

For the heat exchangers Ⅱ in the conversion system of the 40 kt/a acid production from pyrite, double baffle tube shell exchanger and hollow ring tube shell exchanger have been used successively and their operating conditions including heat transfer coefficient and equipment resistance are measured and analyzed The results show that the heat transfer coefficient of the hollow ring tube shell exchanger is 28 7 W/(m 2· ℃),which is 195% of that of the double baffle tube shell exchanger;total resistance is 1 5 kPa, which is only 47% of that of double baffle tube shell exchanger;its equipment investment is only 56 42% that of double baffle tube shell exchanger;meanwhile, it also overcomes problems existing in the double baffle tube shell exchanger such that the baffle is susceptible to acid clay