The feed valve for the catalyst precursor is not fully open, resulting in poor feeding of the catalyst precursor
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The feed valve for the catalyst precursor is not fully open, resulting in poor feeding of the catalyst precursor
Is the upper grille clogged with coke particles? Is the differential pressure normal? Is the detailed content of the catalyst reasonable?
Try adjusting the loose points of the riser and sleeve, as well as the fluidization air for the sleeve
Carefully adjust the loose parts of the inclined tubes to be used; if air blockage is suspected, try reducing or completely shutting off the flow. Pay special attention to adjusting those three key points.
The failure of the liner-detached valve plate leads to poor material discharge; inadequate fluidization results in further difficulties in discharging the material, and the pressure difference between the two vessels fluctuates significantly
Check if there has been any change in the loose medium. Special valve pressure drop
Check whether there are any burnt particles blocking the upper grille and whether the differential pressure is normal; loosen it a bit more to lower the burning temperature and prevent further burning.
Someone has already asked this question on the forum, which shows that many devices have encountered such problems. It also happened in our factory; usually it occurred during startup, and as long as a little oil was sprayed in along with some combustion byproducts, the problem was resolved. It also occurred during normal production, and it was eventually determined that too many large particles of catalyst were causing poor material flow. After adding fresh catalyst, the situation improved significantly.