The issue of the dissolution rate of ammonia in water
Thread Content
This post was last edited by Wang Genrong on 2009-11-21 at 16:43. I would like to ask the experienced colleagues: What is the dissolution rate of ammonia in water under normal pressure, at 35 degrees Celsius, with an ammonia purity of 65% (with air as the other components)? If the ammonia flow rate is 500 Kg per hour, what size absorber is required to produce 4 tons of ammonia water at a concentration of 25%? Please give me some advice! Thank you first! !
It should be absorbed using a jet mixer, and the ammonia water after absorption is fed into a cooler. The model of the injector can be inquired with the manufacturer that produces it. Here is the relevant introduction: http://bbs.hcbbs.com/viewthread.php?tid=508179&highlight=%C5%E7%C9%E4%C6%F7
2# *aoye613 I would like to ask the moderator: Under the above process conditions, what is the approximate ammonia content in the exhaust gases discharged?
This post was last edited by Wang Genrong on 2009-11-24 at 08:50. Thank you to the moderator *aoye613 for his help. I work in the production of chemical equipment made from graphite; I have no prior experience with ammonia synthesis plants, and I don’t have any relevant information available. I am waiting for your assistance. Thank you again!
Those familiar with ammonia exhaust absorption are encouraged to share more opinions.
The ammonia content in the exhaust gases can be determined by dividing the partial pressure of ammonia above the solution by the total pressure of the exhaust gases, that is, yNH3 = pNH3/p. The formula for calculating the partial pressure of ammonia above an ammonia aqueous solution is: lgpNH3 = –1750/T + lg(1.1/M) + 7. Here, PNH3 represents the partial pressure of ammonia above the solution, in mmHg; T is the temperature, in K； M: Ammonia content in the solution, kmol/m3. Calculation: This formula can be found in the \"Process Technology and Design Manual for Small Synthesis Plants\" (Volume 1). For systems that use spray absorption, since ammonia dissolves in water very rapidly, the ammonia concentration in the solution should be calculated based on the concentration after absorption. If an absorption tower is used, water is added once at the top, and at this point the ammonia content in the solution should be considered to be zero. The total exhaust pressure is the operating pressure during absorption.
Thank you for the advice from *aoye613*.
I exactly need information in this area; I’m trying to calculate the ammonia content in exhaust gases, but I’m stuck.