The ammonia nitrogen content in the purified water from the acidic gas treatment unit is unstable
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I would like to ask the experts here: we have an acidic water stripping unit, with the bottom temperature of the tower controlled at 120–125°C and the top pressure at 0.1 MPa; the top temperature is kept between 100–102°C. The ammonia nitrogen content in the purified water coming out of the bottom of the tower is very unstable, sometimes reaching 50 ppm and at other times exceeding several thousand ppm. Is there anyone who can help me analyze how I can make optimizations and adjustments to reduce the ammonia nitrogen level in the purified water and keep it stable?
Are the feed rate and feed composition stable?
The nitrogen present in the raw materials is converted into ammonia through a medium-temperature catalyst (iron-based) and hydrogen