There is a lot of sludge in the packing layer of the drying tower
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In a 100,000-ton pyrite-based acid production plant, there is a lot of dark gray sludge on the ceramic rings in the packing layer of the drying tower. I would like to ask everyone what could be causing this issue. At present, there is an increase in the amount of ash generated by the electrostatic precipitator. I suspect that there is a problem with the cyclone dust collector, as there was previously a leak in the economizer, which resulted in high moisture content in the flue gas entering the cyclone dust collector. The mineral dust adhered to the inner walls of the cyclone dust collector due to this moisture, reducing the space between the central cylinder and those inner walls. The increased gas velocity meant that the force exerted to blow away the mineral dust was greater than its gravitational force of settlement; as a result, large amounts of mineral dust ended up in the electrostatic precipitator, increasing the amount of ash produced there. This also led to a higher dust content at the outlet of the electrostatic precipitator. But even if the dust content at the outlet of the electrostatic precipitator increases, shouldn’t it be removed after being washed by the purification system? It shouldn’t be carried into the dryer, right? But where does the sludge in the drying tower come from?
This post was last edited by mkp369 on 2018-3-26 at 11:52. Fe3O4 is black, Fe2O3 is red, and sublimated sulfur is yellow. If a conversion is to take place, all the oxygen required must be introduced before the drying tower or additional air must be supplied (about 10,000 cubic meters of air under standard conditions). Could this result in air containing ash? If dust accumulates in the cyclone to the point that the spacing between components decreases, its efficiency drops significantly, and more acidic contaminants are produced as a result.
Air ash can be eliminated, unless there is a sandstorm