Abstract: Aiming at the problems of high energy consumption and short running cycle of sour water stripping tower caused by the blockage of the tray, a new type of jet tray (SDMP) was developed by FRIPP, which possesses anti-blocking function. The structure of the tray was optimized using CFD simulation technology. Compared to the conventional F1 float valve tray，the results of hydraulic test proved that the pressure drop of SDMP decreases by 10%， the flux increases by 26%，the operating flexibility is almost the same. The industrial application results showed that the SDMP tray has a good anti-blocking performance. The sour water stripping tower with the new tray operates steady for more than 18 months; the steam unit consumption keeps stable and does not increase with the extension of running time. The average steam unit consumption is significantly lower than that of F1 tray.

Key words: sour water stripping, tray blocking, SDMP, F1 float valve