Angus,
 
For midflow additions you could use a y pipe with a valve.
 
Part of the y connection would have a valve and connection for 
 
adding liquids to your mixing pump line from another vessel.
 
The additions vessel would have a line leading to your y pipe valve and 
 
a vent to allow flow to your mixing pump line. Try experimenting
 
with this idea and let me know if it works.
 
Linden


Angus Scown <[EMAIL PROTECTED]> wrote:
I have just started construction of my processer.  I have started pretty 
simply by building a cone bottomed 44 gallon (200 litre)  drum.  I was 
thinking of using a pump to do the mixing as it seems very simple to 
design/install and with clear pipes in sections to monitor the colour.  

My construction helper (he who welds) and I got talking about the addition of 
the Methanol , Acid, Methoxide.  He got me thinking about some sort of inline 
'adder' so I could drip my chosen substance in to the pump mixing lines.  
This would help me get a good mix.  Has anyone else got experience with this 
type of design.  Not knowing too much about pumps etc what sort of device 
could I look for/make for adding the substance 'mid flow'.

Many thanks.

Angus
-- 
__________________________________
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http://maroochypermaculture.org.au



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