How to clean the pulverized coal that enters the annular chamber of a space furnace?

Coal powder generally does not enter the interior of a space furnace. Based on the current design, there is only one possibility: when the pressure difference between the protective gas in the annular chamber and the pressure inside the furnace reaches a certain level (10 KPa), the protective gas system for the annular chamber will shut down automatically. At present, this automatic shutdown mechanism does not have a function to restore operation; it requires the operator to manually restart it after detecting the issue. In this case, it is possible that some pulverized coal enters the annular chamber at the moment of refeeding coal or during the gasification process. It doesn’t matter if a little bit of pulverized coal gets into the annular chamber; after all, the protective gas in that chamber is blown from the bottom up into the furnace. If some coal is still present there after the machine is stopped, it’s sufficient to blow air in for a longer period of time.

1. Fluctuations in the oxygen vaporization valve (which have a direct impact) should cause significant pressure fluctuations in the reaction chamber, which in turn leads to cross-contamination of gases. 2. Fluctuations in the pressure of the shielding gas are also one of the causes