May I ask the injection point for the sulfur recovery corrosion inhibitor?
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I need to choose an online pH meter for sulfur recovery in the near future. Since I am not very familiar with sulfur processing, I would appreciate your advice on where to add corrosion inhibitors. Thank you
It involves injecting a corrosion inhibitor, mainly ammonia water, at the inlet of the emergency cooling water pump to adjust the pH value.
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The corrosion inhibitor injected into the sulfur recovery unit is mainly ammonia, and it is usually injected at the inlet of the quench tower reflux pump. The purpose is to neutralize the acidic components dissolved in the quench water, thereby preventing the pH of the quench water from becoming too low. Poor hydrogenation leads to a large amount of SO2 dissolving in the quench water, making it acidic and causing corrosion of the equipment.
It is not necessary to add it during normal production. Even if the pH value becomes abnormal, no addition is made, as the addition of ammonia will result in the formation of ammonium salts. Generally, increasing the flow rate of the quench water is used to slow down the decrease in pH. 1# 2002042124
When it is found that the pH value of the quench water is low, it can be replaced with deionized water.