Automation of production in spray-type ammonium sulfate saturators
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Is there a fully automated production process for the spray-type ammonium sulfate saturator? In my opinion, fully automated production is theoretically possible; the key lies in addressing the following critical issues – it’s not clear whether the relevant technologies can meet the requirements. I hope everyone will discuss these points and learn together: 1. When the crystal ratio in the ammonium sulfate mother liquor at the lower section of the saturator reaches 25%-40% (v%), a device for detecting this crystal ratio should be added, and this device should be linked to the crystallization pump so as to enable automatic transfer of the slurry from the bottom to the crystallization tank. A pressure sensor can be added to determine the crystal ratio by detecting weight changes, and a pressure range can be set to control the on/off operation of the crystallization pump. 2. Add an online pH monitoring device for the mother liquor to control the opening degree of the addition valve, thereby enabling automatic acid addition. 3. Install pressure sensors at the bottom of the crystallization tank; these sensors convert pressure changes into information regarding the amount of ammonium sulfate crystals that have accumulated. The set ranges are linked to the operation of the valves at the bottom of the crystallization tank, as well as to the start and stop of the machines used for handling ammonium sulfate and those used for drying, thereby enabling the centrifugal separation and drying of the ammonium sulfate slurry. 4. The dried ammonium sulfide crystals are fed into a storage tank, where they are automatically weighed and packaged using established, mature technologies. Let’s discuss what theoretical shortcomings there still are in this approach
It’s a good approach; nowadays there is an emphasis on intelligent manufacturing, and this shouldn’t be difficult to achieve – it just hasn’t been developed yet.
I think it’s theoretically feasible, and there shouldn’t be any major issues with the equipment
1. Reliability of the centrifuge; the impact of fluctuations in the crystal-to-liquid ratio at the beginning and end of production on centrifuge vibration, as well as the shutdown interlock mechanisms. 2. The speed of production: due to the lack of a large mother liquor tank, it is necessary to extract the crystals promptly; production takes a long time, which requires a significant number of workers. 3. Acid flow rate, mother liquor level, and the reliability of acidity meters
No factory has achieved it yet; we are also considering automation, and the theory is not difficult. Is there a saturation method combined with crystallization for producing large-grained ammonium sulfate?