The performance of reactor filter in the adsorptive desulphurization unit of catalytic gasoline (S-Zorb) will pose direct impacts on the separation and recycling of adsorbent. By utilizing high frequency sensors and experimental set-up of filtration performance during the process of pulse cleaning

the dynamic pressure characteristics varied with time in different measurement points along filter candles were investigated. Also

the effects of the length of filter candle

cleaning pressure and pulse width on dynamic pressure characteristics were analyzed. As shown by the results

the maximum pressure in the filter candle remained stable after gradually increasing from the open end to the blind end. Meanwhile

lower maximum pressure in different measurement points along the whole filter candle was found under the same operating conditions when the longer filter candle was utilized. In these experiments

the dynamic pressure near the open end of 1750-2000 mm filter candles reduced to negative pressure after reaching the maximum pressure. Due to the combination of airflow and pulse pressure wave

the sustained oscillations in the dynamic pressure profile can be discovered. Furthermore

the cleaning efficiency of long filter candle can be improved through the method of properly increasing cleaning pressure and pulse width.