How to design a powder silo
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I am currently designing a powder silo. The properties of the material in question are quite special: it reacts easily with oxygen and moisture in the air, which leads to absorption of moisture and deterioration of the material. While the material has good flowability on its own, this property is lost once it absorbs moisture, resulting in reduced flowability. Therefore, tight sealing is essential. I am also concerned that if the discharge angle of the silo is too large, it could cause accumulation of material, leading to collapse or accidental discharge, as well as unstable material release. I would like to design a powder silo with a capacity of 1000 liters. I’m not sure what parameters need to be considered (related to the material and the silo itself), and I plan to have it manufactured by my own company. I appreciate any guidance you can provide
Sorbitol-based materials? It’s not enough to just say design a powder bin. . It’s necessary to understand how the materials enter. Selection of dust collectors. . The processes related to how the materials are unloaded, etc. . . Only then can we optimize your powder bin. . .
The material is sodium ethoxide. For the feeding method, it is planned to open a part of the top cover of the silo and then manually insert the bagged material; after that, the top cover will be closed. For the discharging method, it is planned to create an opening at the bottom of the silo, connect a DN65 pipe to it, and then attach a valve – the flow rate of the material can be adjusted by controlling the opening degree of this valve, so that not all the material is discharged at once. As for the choice of dust collector, since this is my first time making such a decision, I really don’t know much about it. Could you please give me some suggestions that you think would be suitable? lol
Manually pour the material in by opening the lid. . Then doesn’t that so-called sealing lose its meaning? And the dust – when material is added manually, that dust rises back up to the feeding port; how do the workers there cope with that? I have no experience with this material. But I just searched on Baidu. . Suitable for inert gas sealing. . . At the very least, a slight positive nitrogen pressure seal – what do other people in this industry do?
Most of our colleagues are from the north, where the climate is relatively dry; they carry out the disassembly and assembly work indoors, and it’s not possible to transfer the materials manually. We previously considered using machines for this purpose, but after consulting equipment manufacturers, we were told that our volume of material to be processed is too small, making a fully automatic system too expensive (over 600,000). So perhaps we can focus on improving the sealing aspects. Please give us your advice. This material is somewhat irritating to human skin, so we will ensure that we use comprehensive personal protective equipment. Thank you for any suggestions you can offer
Our company uses dust-free feeding hoppers and vacuum feeders; perhaps we can offer you some suggestions
There’s probably nothing confidential about this device, right? I was wondering if it’s possible to share pictures.:lol Thank you very much; you can also contact me via private message at 1501003035@qq.com – that’s my QQ email address
The problem is that the equipment is too simple; the manufacturer didn’t provide any drawings: just the equipment itself
Oh really? That’s a bit disappointing. Do you know what the specifications are? The specifications of the silo are also quite good! Thank you so much!
Based on the properties of the material, it is recommended that you choose a vacuum feeder; it would be best to provide a process flow diagram so that we can develop a suitable solution for you
A slightly positive nitrogen pressure seal is feasible; stop the supply of nitrogen during unloading, install a bag filter via pipelines on the hopper, equip it with a fan, and use slightly negative pressure for feeding. After completing the feeding, close the inlet valve of the bag filter and activate the nitrogen seal. It is recommended to use a variable-frequency rotary valve for feeding, as it facilitates control of the feeding amount. By adding equipment for pneumatic conveying such as injectors and pipelines at the bottom, conveying will no longer be a problem. That’s more or less it