Sulfur Daily Question, March 29------5 rewards for participation, 10 rewards for correct answers
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Short answer: What is the main form of ammonia nitrogen in acidic water?
It exists in the forms of free ammonia (NH3) and ammonium ions (NH4+).
The form of ammonia nitrogen in acidic water is related to the processing units in refineries; in hydrogen-rich units such as hydrocracking and hydrorefining, most of the ammonia nitrogen in the acidic water exists in the form of free NH3, and it can be easily removed during the stripping process； The acidic water generated by units such as catalytic cracking, atmospheric and vacuum distillation units, and delayed coking contains, in addition to free NH3, a considerable amount of ammonia nitrogen in the form of ammonium salts; this ammonia nitrogen is difficult to remove during the stripping process, resulting in a high level of ammonia nitrogen in the purified water. The effective technique for reducing ammonia nitrogen at present is to add alkali at an appropriate location in the stripping tower.
Ammonia nitrogen refers to the nitrogen present in water in the form of free ammonia (NH3) and ammonium ions (NH4).
What is the main form of ammonia nitrogen in acidic water? Answer: The main forms of ammonia nitrogen in acidic water are nitrogen in the form of free ammonia (NH3) and ammonium ions (NH4+).
The form of ammonia nitrogen in acidic water is related to the processing units in refineries; in hydrogen-handling units such as hydrocracking and hydrorefining, most of the acidic water contains free NH3, which can be easily removed during the stripping process. Units such as catalytic crackers, atmospheric and vacuum distillation units, and cokers generate acidic water; in addition to free NH3, a considerable amount of ammonia nitrogen exists in the form of ammonium salts. This portion of ammonia nitrogen is difficult to remove during the stripping process, resulting in a higher level of ammonia nitrogen in the purified water. The current technology for reducing ammonia nitrogen is to inject alkali at an appropriate location in the stripping tower.
In acidic water, ammonia exists in the form of ammonium ions; NH4+ is acidic, and it reacts with OH- under neutral or alkaline conditions.