What to do if the Scott unit stops operating without ammonia?
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This post was last edited by liaifeng on 2018-9-10 at 20:06. The Scott unit is shut down; the pH level of the quench tower generally needs to be maintained at an alkaline level by adding ammonia, in order to reduce corrosion of the equipment. Often, the sulfur shutdown is carried out only after the entire refinery unit has stopped operating, by which time there may be no ammonia left. Do you have any good ways to solve this?
Now, in addition to the ammonia injection process, it is possible to start by choosing the appropriate materials, selecting those with high corrosion resistance such as stainless steel; of course, this will increase the cost of the equipment
Note: Is it easy to control sodium hydroxide? Are there any side effects?
We also plan to switch to stainless steel material for this maintenance work. Corrosion of the pump alone still exists. The impeller is corroded, so the pump cannot deliver fluid – the problem is serious.