Vapor Management Still Design
As the name suggests the forcing of reflux takes place outside of the main column body.
Vapor management still design. The vapor at the reflux condenser is condensed and the liquid is sent back down to the column in tube d. Vapor management reflux still design vm earl december 16 2014 600 463 pixels. Share it with your friends. Some vapor goes directly to the reflux condenser b and some goes to the gate valve c.
If you do this by design then the vapor getting past the reflux condenser can be condensed by a second condenser and collected as product. Leave a reply cancel reply. Did you like this article. Because the systems above are to varying degrees controlling the rising vapor they are commonly known as vapor management stills.
Vm vapor management still the main difference between a vm and an lm stills is that it has both a reflux and product condenser. The atmospheric vent via the product condenser did work. The vm design is probably the easiest of the three to control thus does not need as intricate a valve such as the needle valve found on the lm still. It was noted earlier that towards the end of the ethanol run the proportion of water in the vapor increases.
Design entails using a reflux condenser coil to block the flow of vapor or liquid from departing the still. Build a vapor management still with stilldragon parts only. Your email address will not be published. Required fields are marked comment.
Divide the vapor into two flows mechanically. These include vapor management design vm liquid management design lm or cooling management design cm you will conmanly see these as vm lm and cm which are abbreviations used to describe the type of management system used within the still. If sized properly the tails of the reflux coil will remain between 110 120 degrees f. And some will begin to flow past the condenser.
It is variable and quite controllable. This means it is easily movable with the bare hand. There are three ways of controlling reflux within a column still. Control at the end of a run.
The vapor management reflux still. In a vapor management reflux still the vapor travels up the packed column where it is divided at point a. But anyway you will still need to make the same cuts with a vm still as you do with a lm and still have all of the same need to adjust the reflux ratio as the abv reduces in the wash. External valved reflux this is an extremely popular design that is widely used by people building their own columns.
Compound still management operation. A design for a variable reflux vapor management head unit using a gate valve is at appendix 6.