sshep
Chemical
- Feb 3, 2003
- 761
Our product driers (hexene, octene) have a very tight water spec. Currently we are using 13x mol sieves and/or an Almatis Selexsorb. The usual procedure for rendering this type material safe is to quench with water, however our driers were not designed to do this in situ. Currently the driers are regened to remove hydrocarbons and then the sieves unloaded by vacuum truck. The sieves are cyclone seperated in-line and allowed to fall into a lugger tub. This tub then becomes a fire hazard as the drying medium is very active- too active to add water after removal. Rather the sieves need to be added to water as they are removed.
We would like to design a system that would quench the sieves in water after removal from the reactor. Presumably the sieves could be dropped into water after seperation in the cyclone if a recieving vessel were designed for this purpose- later the excess water could be drained. This can't be an uncommon problem. I believe someone must have previously designed for a system to quench drier sieves outside of the drier. Any recommendations are appreciated.
best wishes,
sshep
We would like to design a system that would quench the sieves in water after removal from the reactor. Presumably the sieves could be dropped into water after seperation in the cyclone if a recieving vessel were designed for this purpose- later the excess water could be drained. This can't be an uncommon problem. I believe someone must have previously designed for a system to quench drier sieves outside of the drier. Any recommendations are appreciated.
best wishes,
sshep
