Seeking help: Problem with blockage at the lime feeding port
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The preparation of lime slurry involves feeding lime stored in the silo using an oscillating feeder and a rotary valve. Initially, a carbon steel straight pipe was used to connect to the top of the lime slurry tank; however, due to frequent blockages, it was replaced with a flexible connection to facilitate disassembly and cleaning. We found that most blockages occurred at the lowest connection point, especially in summer when there is a high level of moisture in the tank – this makes that area particularly prone to getting damp, leading to more and more buildup over time. Cleaning is necessary every day during summer, and if it isn’t done promptly, blockages occur immediately. I’m seeking advice from experts – is there any good way to solve this problem? There are many tasks to handle on site, and cleaning every day is really troublesome! Also, we use slaked lime as the ingredient, so there isn’t much issue with heat generation; the number of batching cycles per day is around 6 to 8.
The blockage is caused by heavy water vapor, which forms a solid substance with lime and sticks to the outlet! One is to try to force the transfer using screw conveyor equipment ； Second, is it to try using negative pressure delivery (to prevent moisture from entering the pipes)? Are there any other practical experience methods everyone would like to share?
It’s this issue: the lime mixture we use is of an older type, and it’s fed downward using a vibrating feeder. I’ve seen that other companies use screw conveyors for this purpose, and there have been no blockages with those. If we were to make changes, it would have a significant impact; we would need to shut down the equipment to make those modifications, and we don’t have that much time or resources available
When using negative pressure for extraction, dust removal equipment is necessary; there is a lot of lime dust during installation, and cleaning the filter bags becomes quite troublesome. Currently, a gas supply pipe has been temporarily connected to blow air at low volume, which provides some effect, but it’s difficult to seal properly, resulting in more dust
Dust removal equipment may not be necessary. A circulation loop device that uses jet-induced negative pressure is sufficient; the material circulates on its own, which not only creates negative pressure but also serves to mix and exchange heat. “\"Multifunctional in one\": Lol, the attachment contains information about this device; you can refer to it.
Why not just remove the lid that covers the lime slurry? What’s coming out is steam, not pollution
Use the discharge pump of this tank to connect a pipeline at the pump outlet as flushing water