Problem of drawing water from the acidic side
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In my single-tower pressurized side-stream stripping process, the vapor extracted from the side stream undergoes three stages of condensation; thereafter, it is absorbed by water using an ammonia water mixer to produce crude ammonia. Currently, most of the water used for cooling in the condensers returns to the acidic water tank, causing the acidity level in that tank to rise sharply due to the presence of ammonia and sulfides! How should it be handled? I earnestly ask all the experts for their guidance! Thank you
It’s possible that the amount of material drawn off via the side line is too high; too much water will carry away the crude ammonia gas. Another reason is that the concentration of acidic water is insufficient, and the ammonia nitrogen level is too low.
You’re using circulating water to exchange heat with ammonia – isn’t that causing an internal leak? Isn’t it heat exchange using acidic water?
Is there a temperature gradient for stage 3 condensation, and a pressure gradient as well? How’s the control?
The pressures are around 3.5, 2.5, and 1.5 respectively. Is the temperature and everything else normal? The water supplied by other devices does not contain high levels of ammonia or sulfides. At present, the condensed water contains large amounts of ammonia nitrogen and sulfides, and it returns to the raw water tank after being condensed. How should it be handled?
How exactly should the side-line extraction be controlled? Are the ammonia nitrogen and sulfides in the raw water around 8,000–10,000 respectively?
There is no internal leakage in the condenser; this has been confirmed
Our third-stage condensate goes directly to the inlet of the acidic water feed pump
On my end, it goes straight back to the raw material water tank, and then is further processed by the raw material water pump