How to ensure the inlet temperature of the electrostatic precipitator in the absence of a waste heat boiler
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Sulfuric acid process: How to ensure the inlet temperature of the electrostatic precipitator in the absence of a waste heat boiler
Increase the length of the process pipes and add some heat sinks
A flue gas cooler is added between the outlet of the boiling furnace and the cyclone dust collector.
Logically, there should be a waste heat boiler, which can recover waste heat and also reduce the temperature of the flue gases； If there is no waste heat boiler, other cooling measures must be adopted based on the temperature requirements of the electrostatic precipitator, such as using venturi spray cooling, or foam towers and packed towers for cooling; generally, adiabatic evaporation is used for cooling.
There are process specifications regarding the inlet temperature of electrostatic precipitators; too high a temperature can cause deformation of the equipment. Since there is no waste heat boiler, two parallel flue gas coolers must be installed. Cyclone dust collectors are used to reduce the inlet temperature to below 350 degrees
Is electrostatic dust collection still useful after adiabatic evaporation? Can it still be used? Firstly, a waste heat boiler must be installed during the design phase; there is no need to consider other types of cooling equipment or methods ； If there’s a problem while the boiler is in operation, it needs to be shut down for maintenance. Don’t expect to keep production going by using temporary measures – it’s not worth the effort.