2",3" VM 3d model design

[HookLine]

There are a number of ways to centre reflux. Some more possibilities are:

The reducer in the above drawing is sitting too low, the bottom of the reducer should be 30 mm or so above the take-off port.

[NicksExa_N13]

I like the idea of the centering ring of the bottom of the condenser seams easy enough to do

[cob]

hookline i came up with this to reduce the constriction of a centering ring and put the drip in the center of the column the wire is 304 stainless ~.7mm and the mesh is ~2mm placed as close to or in contact with the condenser, it shouldn't splatter. thoughts?

[NicksExa_N13]

Thought i would shows u guys what I'm up to...



Still got to add titles for the different views and got to finish the item list and add on the item bubbles etc but this is generally the direction the plans are moving in...

Nick

By the way you need to first click on the thumbnail then secondly click on the image to enlarge it again

[NicksExa_N13]

Heres the latest almost finished off this plan

Will do a couple more plans in the next couple weeks



Nick

[NicksExa_N13]

Hi peoples,



I added a note about the cap and the tee are sliced in the drawing to allow observation of the double reflux coil condenser and fixed up the item numbers in item bubbles on isometric

Nick

[The Baker]

I think maybe you left one of the 'l' s out of the word distillation on the plan.

This is fantastic work.

[HookLine]

hookline i came up with this to reduce the constriction of a centering ring and put the drip in the center of the column the wire is 304 stainless ~.7mm and the mesh is ~2mm placed as close to or in contact with the condenser, it shouldn't splatter. thoughts?

I had a brief play around with mesh at the bottom of the condenser to see if it would direct reflux, and it can, but it is variable. So what you have could work, you would have to test it with some alcohol to see.

[kiwistiller]

hookline i came up with this to reduce the constriction of a centering ring and put the drip in the center of the column the wire is 304 stainless ~.7mm and the mesh is ~2mm placed as close to or in contact with the condenser, it shouldn't splatter. thoughts?

I had a brief play around with mesh at the bottom of the condenser to see if it would direct reflux, and it can, but it is variable. So what you have could work, you would have to test it with some alcohol to see.

I am in absolutely no way shape or form an expert on column design, but I would have thought a constriction there would be a good thing? Please tell me where my thinking is wrong if that's off...

[cob]

kiwistiller you are not wrong. a constriction just below the vm take off port hopefully breaks up laminar flow to enhance take off rates. my purpose in using the tapered screen is to drop the reflux from the condenser to the packing in a single centered stream, as opposed to a ring of drops. simple and easy mods to the funnel design would center the reflux also, if exact center is of real benefit.

[kiwistiller]

I was thinking above the takeoff port, but I see what you're going for now! Cheers
Kiwi

[kentuc]

Why not have a funnel with holes in the 12,3,6,9 o'clock position enough to alow vapor to pass through but still a solid enough area to catch liquid and direct it to the center of the packing?????

[Centimeter]

Here’s a picture of what I was going to give a shot. This is the cone part from a 2”x3/4” reducer that I cut off and sanded a bit so that it essentially threads into the top female adapter of my column. I feel like this will be better than putting the restriction directly below the reflux condenser- can’t exactly say why.

What do you guys think? Is ¾” too small a restriction on a 2” column? Should I leave it there or try and put it directly below the reflux condenser? Any thoughts would be appreciated.

I hope hope hope that this works! It’s taken me about a half year now to get the nerve back up to give another reflux run a shot. I guess spending 1500USD and thousands of hours of work only to get mediocre neutral at a max abv of 93% was a bit frustrating.

[olddog]

Welcome back Centimeter, I havn't noticed you on the forum for a while. Have you considered making some holes around the rim of the reducer to allow the upcoming vapour to condense to be returned down the centre.

[Centimeter]

It's good to be back. I just hope that I can finally get this to work!

Hmm, I can't say that i quite understand what you're suggesting. Are you saying to drill some holes in the cone part or drill holes on the edges of the cone? Is this intended to allow for rising vapor to pass through the cone or something?

Also, I've seen in other threads that it is suggested to not allow the bottom of the cone to contact the packing. What's the reasoning for this? My primary concern right now is the diameter of the restriction. What would be the best diameter for the collar considering it's 2" all the way to the product condenser?

[HookLine]

Is ¾” too small a restriction on a 2” column?

That is the same size restriction I have on my reducer that is brazed on the bottom of my reflux condenser, and it does not seem to be a problem.

As long as there is a small gap between the reducer and what is immediately below it it (take-off port or packing), I can't see any problem.

[olddog]

I am probably completely wrong, but my thoughts were that the upcoming vapour would come up the outside of the column , condensed by the reflux coil, then returned down the centre.

[HookLine]

On mine vapour comes up through the 3/4 hole in the reducer, and the condensate drips back through the same hole. The condensate is a tiny fraction of the original vapour volume.

[NicksExa_N13]

Hello peoples im back on the forums again and back at work I was wondering if anyone knows someone preferably in Qld but if i have no luck someone in aus who can knock me up a still as per the 3" design shown in this thread? If so can you pm me or reply to this thread thanks

[NicksExa_N13]

i would prefer the still to be copper because its cheaper but i would consider stainless too...

[Nichevo]

I have started designing some parts in Pro engineer(educational edition). They are all properly dimensioned and constrained. If anyone wants the files feel free to PM me.

Here is a couple of them:

I also animated a triclamp assembly:
http://www.youtube.com/watch?v=K5X2pVlcqzc" onclick="window.open(this.href);return false;" rel="nofollow

Next up is a ball valve assembly, after that all the parts are trivial. Although I am notorious for not completing things, I might eventually write a guide. Good technical drawings, parts lists, and assembly blow ups are what beginners need.

[HookLine]

Good technical drawings, parts lists, and assembly blow ups are what beginners need.

Agree. Currently being worked on. Takes time and effort.