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centreing rings for a 4" packed column

PostPosted: Mon Aug 11, 2014 12:47 pm
by Captain Drew
How far apart do centering rings need to be in a 4" packed column please?

Re: centreing rings for a 4" packed column

PostPosted: Mon Aug 11, 2014 4:51 pm
by FullySilenced
About every 1/3 of the packing length from the bottom and then at the top of the packing ... in another set of standards i found

2/10th from the bottom and then one at 5/10th from the bottom then at the top... under the deflagmator or reflux condenser


best info i got... hope it helps


fs

Re: centreing rings for a 4" packed column

PostPosted: Mon Aug 11, 2014 6:57 pm
by rkr
In 2" columns an ideal distance in between collars is around 50cm based on my tests. Since 4" column has more issues with reflux distribution I wouldn't go any longer and it might be worth it to try shorter distance.

Slainte, Riku

Re: centreing rings for a 4" packed column

PostPosted: Tue Aug 12, 2014 2:08 am
by FullySilenced
Riku thanks for jumping in there... as I do not use centering rings... I looked at a number of Hooks Drawings to come up with the numbers i posted...

FS

Re: centreing rings for a 4" packed column

PostPosted: Tue Aug 12, 2014 5:23 am
by rkr
We have actually gone beyond collars these days, it's sieve technology that rules now :lol:

BTW, why is it so quiet in all forums nowadays? I mean I admit being guilty of having gazillion other things to do and being away, but it seems like there are one or two column distillation related posts / month these days. There used to be a continuous discussion a year or two ago.

Slainte, Riku

Re: centreing rings for a 4" packed column

PostPosted: Tue Aug 12, 2014 8:07 am
by FullySilenced
Riku,

Don't be a stranger here your always welcome...

The forum with through a few growing pains but Jay is starting to get the volume back up a bit..

Still some great people visit here but it has its quiet moments still...

FS

Re: centreing rings for a 4" packed column

PostPosted: Tue Aug 12, 2014 12:53 pm
by Captain Drew
Thanks folks. Mosr helpful.

I'll be posting pics of the new beast soon.

Re: centreing rings for a 4" packed column

PostPosted: Mon Jan 02, 2017 3:37 am
by 47cj3a
Does anyone have an example of what a centring ring looks like or how to build one?