Desulfurization lean liquid, rich liquid solution temperature
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In summer, when the temperatures are high, how do people control the rich and lean desulfurization liquids? What method is used for cooling?
Is it wet flue gas desulfurization upstairs? If it is that crucial, it is necessary to control the outlet gas temperature of the wash tower before the desulfurization tower; in summer, the pressure of the circulating water in the wash tower should be increased appropriately. Additionally, take the opportunity during shutdowns to check whether the gas-liquid distributor in the wash tower is clogged, as well as whether the packing in the wash tower is blocked, and clean them out promptly if there is any blockage.
Yes! There are several other methods. One way is to increase the pressure of the circulating water in the wash tower and reduce the temperature of that circulating water in order to cool the gas; another method is to directly cool the temperature of the solution! Actual hands-on operation!
It is recommended to install a liquid-lean cooler and a liquid-rich heater, as this facilitates operation in summer and winter and helps with the control of desulfurization and regeneration.
Lowering the temperature of the gas entering the desulfurization tower involves a large amount of heat; in addition, the reaction also generates heat. In any case, it is necessary to identify the main sources of heat.
Different catalysts require different temperature levels. Generally 20-30 degrees. To lower the temperature, a pre-cooling tower must be installed before desulfurization. Control the gas temperature with low-temperature water.
Cooling equipment for gas should originally have been installed in front of the desulfurization tower; now, it is being considered to equip the lean liquid cooler and the rich liquid heater with shell-and-tube heat exchangers.