Analysis of the reasons for high pH in hydrogenated purified water
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The pH of the hydrogenation purification water in our plant is unstable; it often ranges between 9 and 9.5 recently. However, the ammonia nitrogen level is around 10 mg/L, which is not high, and all other parameters of the purification water are normal. There is also no significant change in the temperature of the stripping tower. Do anyone have any good suggestions?
Was too much corrosion inhibitor added? The corrosion inhibitor is alkaline in nature
This shows that your hydrogenation process is very effective – there is no sulfur dioxide in the outlet, so it’s not necessary to add alkali to the quench water. :)
This is related to the raw materials coming from upstream; hydrogenation acidic water already has a pH of over 14, and its ammonia concentration is quite high. This remains the case even if you carry out effective removal processes
For our position, the hydrogenated purified water level is around 10; it’s always been this way
What does it mean that there is no sulfur dioxide in the exhaust? Where in a hydrogenation unit is sulfur dioxide generated?
Do you know what state acidic water with a pH of 14 is in? That’s equivalent to a strong alkaline solution containing 1 million units of sodium hydroxide. Your factory is really peculiar
You can use a pH test strip to measure it by yourself; that way you’ll know
The pH value primarily determines the ratio of ammonia to hydrogen sulfide as well as the ammonia concentration. It can be calculated.