What are the reasons for poor fluidization when restarting the regenerative inclined tube?
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What are the reasons for poor fluidization when restarting the regenerative inclined tube? How to adjust? Everyone is welcome to discuss.
Is it due to large fluctuations in the fluidization air flow, or excessive air volume, with insufficient pre-heating steam?
Here’s a suggestion: cut off all the loose parts of the inclined tube, leaving only one branch in the middle and lower section. Because sometimes putting all the loosening points into use can create resistance to the catalyst flowing downward, and may even prevent the catalyst from moving down. Check the density of your inclined tubes; if the density fluctuates greatly or is very low, remove all the loose parts. I’ve done three sets of catalysis, and I did it in the same way each time.
Is part of the refrigerant stored in the inclined tube at the start of operation?
Poor degassing or insufficient lifting is likely related to the design; adjustments should be made in these two aspects
Actually, for similar questions, I have replied more than three times in total, so we all need to make use of the forum’s search function to find the information or content we are looking for! Trend chart comparing before and after the adjustment back then: https://attach01.hcbbs.com/forum/201202/19/102339oro0jmaxut5q0kau.jpg
However, such adjustments require some patience and skill. I remember that a company contacted me; we talked for over an hour to resolve their issue with poor fluidization. However, if making adjustments on your own, it is recommended to maintain good communication between the internal and external controls to prevent improper operation from causing throttling or flow interruption, which could lead to interlock actions! ! ! Remember! ! !
I have a question: 1. Currently, all the loose connection points come with orifice plates, and the air flow rate is fixed. That is, adjustments are made to the number of loosening points. Are the loose points on the slide valve used for adjustment? How is it adjusted? 2. The external circulation cannot be properly fluidized, and the pressure drop across the slide valve fluctuates between 15-25 KPA. Will the main air flow reverse? How should it be adjusted?
I analyze it this way because this issue is of a general nature, but that doesn’t mean it’s absolute! In the design of the loose-air system for the devices I’ve worked with, the main line is equipped with orifice plates, while the auxiliary line does not have them; hence, the operations I mentioned above are necessary. Without them, there’s no value in such a design!