Grease to Diesel

• Sep 9, 2014

• #2

LittleInch

Petroleum

Mar 27, 2013

22,946

GB

Amazngly enough it seems to be true

See

http://www.extension.org/pages/2800...verting_Used_Oil_and_Trap_Grease_to_Biodiesel

and follow the links under acid pre-treatment

As usual it is a bit more complex and time consuming (mixing period is days not hours)than might first appear....

My motto: Learn something new every day

Also: There's usually a good reason why everyone does it that way

 

Upvote 0 Downvote

• Sep 9, 2014

• #3

moltenmetal

Chemical

Jun 5, 2003

5,504

CA

If you're making biodiesel from calcium soap and sulphuric acid, you're missing a reagent- methanol.

If you're just interested in making stearic acid or mixed free fatty acid, that's not anywhere nearly what a person would call diesel, though you can probably run a diesel engine on it- if you keep it melted...

 

Upvote 0 Downvote

• Sep 17, 2014

• #4

0707

Petroleum

Jun 25, 2001

3,444

PT

This kind of way to to make biodiesel are not new at the moment we have an unit which is processing biodiesel from animal fat.

 

Upvote 0 Downvote

• Sep 17, 2014

• #5

moltenmetal

Chemical

Jun 5, 2003

5,504

CA

"Acid ptretreatment" for feeds with high free fatty acid content is definitely not new. But the process is still esterification with methanol, not just acid hydrolysis of a soap/grease.

 

Upvote 0 Downvote

• Oct 1, 2014

• #6

geesamand

Mechanical

Jun 2, 2006

688

US

If mixing this material is the limiting factor in productivity, then there are a very few mixing setups that can move thick material around efficiently. Maybe only one. Invest in a mixing expert and lab time if this needs to be viable, as the difference between optimal and suboptimal mixing can be orders of magnitude.

 

Upvote 0 Downvote