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This post was last edited by Firefly on 2015-4-10 08:40. Online time: irregular. Specialization: Diagnosis, troubleshooting, and design issues related to the production of compound fertilizers; I will share with you everything I know on these topics. (Publisher’s note: This post is intended for one-on-one inquiries between experts in compound fertilizer technology, whose contact number is 13506356269, and other forum users. Please refrain from participating in the discussion. If you have any objections, feel free to post a new thread in the compound fertilizer forum section for discussion. Thank you for your cooperation!) ）
This post was last edited by Xiao Shoudong on 2012-3-31 07:48. In the AZF process, liquid ammonia is used for production; a check valve is installed before it enters the tubular reactor to prevent backflow. Recently, these check valves have been breaking down frequently, although there is no abnormal vibration, and it is suspected that condensed water has mixed into the liquid ammonia. The condensate water is saturated steam from the power plant, which is used after being cooled. It is suspected that steam has entered the liquid ammonia and been condensed into condensate water.
In the granulation process for compound fertilizer production, how are the viscosity, pH value, gas-liquid ratio, and optimal balling temperature required for the materials determined? What are the testing methods?
Following up on the question from above: what is the proportion of viscous materials and sandy materials in a formula used in roller production? What is the moisture content of the product coming out of the granulator? How are the specific gravities and concentrations of the ammoniated phosphatic ammonium slurry and the mixed acid slurry calculated?
Continuing from above, the proportion of sticky substances is around 35%, while that of sandy substances is between 30-40%; the moisture content in the material coming out of the granulator is 2-5%. How to convert the specific gravity and content of ammoniated granulated phosphatic ammonium slurry and mixed acid slurry? I didn’t understand this sentence
The specific gravity of the mixed acid depends on its viscosity, your drying capacity, and cost
Why isn’t anyone answering my question? Is no one looking at it? I hope someone can answer whether it’s due to corrosion.
Thank you for the answer. My second question is regarding the low-temperature conversion of potassium chloride developed by Red Sun Group, as well as the ammoniation granulation process: what is the specific gravity of the phosphatic ammonium slurry and that of the mixed acid? How can the nutrient content be determined? And how is the formula established?
By this calculation, you will definitely use a formula for compound fertilizer. You treat the material in the mixed acid tank as a type of waste material, with nutrients of X-X-X. Can’t it just be ignored then? As for the specific gravity, you need to take into account your drying capacity as well as the viscosity. Given that the lower the moisture content of the slurry, the less coal is required, but if the density of the mixed acid is too high, your pumps and pipes cannot handle it and will get clogged. Data confidentiality: saying this much is almost the same as saying there is no confidentiality.
As a beginner, there are still some things I don’t quite understand from what you’ve said. If it doesn’t involve confidentiality, please explain more and help me learn from all of you*:)
The check valve located before the reactor is prone to damage; you should consider the diameter of your liquid ammonia pipeline. When using liquid ammonia, it is necessary to ensure that it fills the pipeline properly during normal operation, so that ammonia can be supplied continuously. The larger the liquid ammonia pipeline, the smaller the opening degree of the front operating valve; as a result, the liquid ammonia does not fill the pipeline easily and flow can be interrupted, leading to slurry backflow and blockage of the check valve. To solve this problem, one approach is to switch to the use of gaseous ammonia; reducing the diameter of the ammonia pipes can also help address the issue of slurry backflow.