kiwistiller wrote:The column I'm building at the moment ...
What project productivity of this column on an alcohol?
It must give about 10 l/h if effectively to use his diameter (4 inches?). But a volume of pot must be much more than 50 litres, otherwise cutting of heads and tails will be difficult. And heating must be approximately 8-10 kilowatts. It quite a bit!
Column with the height of packing part a 1500 mm (60 inches), and diameter 50 mm (2 inches), can give 2,5-3 litre/hour and requires approximately 3 litres of packing and power of heating 2,5 kW.
Excuse me, all my posts is on-line translation.
----------------------------- 50L Keg with Heating Elements 0-4.5 kW
1.5m Column SS 2"
packing - SS SPP 3.5x3.5mm
1,8 liter/h of azeotrope
SPP it the really wonderful packing. Right now I get an alcohol 98.6% vol (27.4°C). It is 97.16% at 20°C. Azeotrope.
(click for enlarge image)
Excuse me, all my posts is on-line translation.
----------------------------- 50L Keg with Heating Elements 0-4.5 kW
1.5m Column SS 2"
packing - SS SPP 3.5x3.5mm
1,8 liter/h of azeotrope
I thought you just got rid of all yer russian spies. The redhead is gorgeous, she should have been allowed to stay.
Simple potstiller. Slow, single run.
(50 litre, propane heated pot still. Coil in bucket condenser - No thermometer, No carbon) The Reading Lounge AND the Rules We Live By should be compulsory reading
Probably did you ask about speed of run?
It is an alcohol from my column d.40mm (1 ½ "). Electric heater element 4500 W, actual heating - 1000÷1500 W (control of feedback with pot's pressure). Run is 1.2 l/h.
Excuse me, all my posts is on-line translation.
----------------------------- 50L Keg with Heating Elements 0-4.5 kW
1.5m Column SS 2"
packing - SS SPP 3.5x3.5mm
1,8 liter/h of azeotrope
Thank you. Online - translators sometimes completely change sense of the post. I think, you can see it in my messages, and my messages are difficult for understanding..
Excuse me, all my posts is on-line translation.
----------------------------- 50L Keg with Heating Elements 0-4.5 kW
1.5m Column SS 2"
packing - SS SPP 3.5x3.5mm
1,8 liter/h of azeotrope
That alcometer is inaccurate because it is virtually impossible to collect ethanol at 98.6% in an open environment... That's about 3% higher than anyone should expect to collect at under normal circumstances... Either the alcometer is mis-calibrated or there is no proper temperature compensation...
rad14701 wrote: there is no proper temperature compensation...
Yes it is. Temperature was 27.4°С( 81.32°F) when i made photo. When the temperature has decreased to 20°C (68°F), alcometer has shown 97.2% by vol. (95.7% by mass). It is an azeotrope.
Excuse me, all my posts is on-line translation.
----------------------------- 50L Keg with Heating Elements 0-4.5 kW
1.5m Column SS 2"
packing - SS SPP 3.5x3.5mm
1,8 liter/h of azeotrope
Excuse me, all my posts is on-line translation.
----------------------------- 50L Keg with Heating Elements 0-4.5 kW
1.5m Column SS 2"
packing - SS SPP 3.5x3.5mm
1,8 liter/h of azeotrope
What is the "chemical treatment" applied to the spiral-prismatic stainless still packing to increase its "wettable-ness"? Making the stainless more wettable would certainly optimize the surface area and should minimize channeling, no?
I don't have the link, but I saw something similar--but not as nice--on a Russian site where they cut stainless scrubbies into 3-5-mm "springs" for packing. Time consuming, yes, but it's a one time deal.
As for cleaning the still, why not just use "clean-in-place" (CIP) techniques? After a quick rinse, remove the reflux condenser and replace it with a "sprayball"; use the boiler as the reservoir and circulate the cleaning chemicals thru the column and back into the boiler with a pump? Birko's Brew-R-Eze and Acid-Brite are safe for copper and you just turn it on and let it do its thing for 10-min or so while you put everything else away, or better, have a drink... When you're done, everything will be good as new.
What is the "chemical treatment" applied to the spiral-prismatic stainless still packing to increase its "wettable-ness"? Making the stainless more wettable would certainly optimize the surface area and should minimize channeling, no?
Yes it is. the treated packing absorbs reflux as a sponge and hinders to formation of channels.
I don't have the link, but I saw something similar--but not as nice--on a Russian site where they cut stainless scrubbies into 3-5-mm "springs" for packing. Time consuming, yes, but it's a one time deal.
SPP excels the cutted stainless scrubbies on all indexes. For example, evenness of piling. The cutted stainless scrubbies is laid unevenly, a column chokes and works bad.
Excuse me, all my posts is on-line translation.
----------------------------- 50L Keg with Heating Elements 0-4.5 kW
1.5m Column SS 2"
packing - SS SPP 3.5x3.5mm
1,8 liter/h of azeotrope
I wonder does that SPP (spiral prismatic packing) mean those constructions made of SS wire? (Not those drilling leftovers which are in second photo.) I just want understand this right.
How does spp scale up to bigger columns 4" or 6", the rule seems to be that the diameter should be 1/10 the diameter of the column but does that apply for larger columns as well? I'm wondering if it would become less effective because the surface wouldn't hold as much liquid.
Alrighty, not automated yet but an hour or so of work got me this.
I passivated in muriatic acid the threw em in a rock tumbler with sand.
I added copper grounding crimps cause I had em.
jake_leg wrote:Look good. You should passivate using citric acid though.
Yea gotta buy some, I had a gallon of the muriatic laying around so I used that. Better than nothin I suspected. I think the sand did a great job of roughing it up, dont know if the acid is needed after the tumble.
jake_leg wrote:Doing nothing is fine actually, it will passivate in air given time.
What sort of volume have you got there out of interest.
That was enough to fill a 1.5 inch column 20 inches tall.
Ran it this weekend, it pissed 185 proof through the whole body. It ran about twice as fast as I could run it with the scrubbies.
I was gonna make a slightly taller column but 20 inches was the pipe I found in the corner of the shop. Think I will stick with it as it makes for a compact unit and 185 pr is good enough for me. Switching to electric was nice too, no more chasing flame levels.
Guess - what was the background for a photo shoot?
SPP
before
etching
SPP
after
etching
Ready to use SPP
after etching
and passivation
Excuse me, all my posts is on-line translation.
----------------------------- 50L Keg with Heating Elements 0-4.5 kW
1.5m Column SS 2"
packing - SS SPP 3.5x3.5mm
1,8 liter/h of azeotrope
Because each element have ten eddges for each round...
Attachments
Excuse me, all my posts is on-line translation.
----------------------------- 50L Keg with Heating Elements 0-4.5 kW
1.5m Column SS 2"
packing - SS SPP 3.5x3.5mm
1,8 liter/h of azeotrope