Explosion in Catalyst Vessel

 On June 3,2014, an explosion tool place at a plant June 3, in a catalyst vessel in a plant in Netherlands. The catalyst, it is reported, was being cleaned with warm, liquid methylbenzene. According to the investigation report, while the cleaning process was taking place, the temperature and pressure in the reactor rose quickly, which caused the explosion
Read about it in

 http://www.nltimes.nl/2014/09/18/explosion-shell-moerdijk-caused-excess-pressure-report/

 See a video of the explosion in:
 http://www.liveleak.com/view?i=404_1401831796

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