What? No slamming of me for using spec pump engine fuels?
Having said that yesterday I skipped ahead in my stacked of books reading list to an article,
“How to Keep Your Old John Deere Plowing” by Allen W. MacDonnell
Amazing what he puts up in just 20 pages. Sadly no woodgas info/ideas at all. For that there is the DOW with RonL’s, DavidB’s, WayneK’s, DougS’s and soon BillS’s gasified tractors works.
What Mr MacDonnell does put up is that past just your own natural gas seep-well or pig sties/cow-horse shits made bio-methane and engine converting and tank compressing is that you can relatively easily by refrigerating condensing separating take-out a useable percentage of butane and propane. Taken out as a liquid. Common tanks stored as energy dense liquid fuels. For really excellent powerful clean-burn small engine performances. Chainsaws, eh? Mo-peds!
Then for diesel tractors substitute fuels he goes into older engines direct of use neat-vegetable and fish oils. Heated liquefied animal oils. ". . . every (milking)cow in pasture has the potential of to produce 8 ounces of bio-diesel a day in season."
Then for the newer spec fuel insistent “compliance” diesel engine types he goes into ethanol/lye bio-diesel making in addition to the more common know methanol/lye process. All in plain simple languages. Addressing safety and toxicity issues.
AND addressing just what to do with the alcohol/lye contaminated glycerol end by-product!
This last “problem” is the woodgas tie-in. 10 years experienced now with bio-diesel makers asking if a woodgasifer could be a contaminated glycerol take-care-of solution.
I’ve read whole hundreds of pages book promoting, detail explaining step by step bio-diesel making that do not address solving this end-game problem. Had an inlaw dairy farmer grew the rape seed. Bought his methanol and lye. made his bio-diesel for his tractors and road truck with then barrels and barrels of what-do? contaminate glycerol. He quit. Still has those barrels I think
Allen MacDoundal does detail out what, and how use this valuable by-product… The glycerol if purified is valuable in and of itself. Food sweetener. Soap and hand lotion additive. Kerosene lamp lighting/heating fuel. Base for nitro explosives/propellants.
He explains in plain text how to evaporate out the ~20% remaining methanol/ethanol alcohols - for condensing and reuse. Wash out and capture out the NaOH or KOH to get this purified glycerol. Using diatomaceous earth and water. (Activated wood charcoal instead!)
He does go over the cost comparisons at small scale. Anything at current US/Canada comparison levels still put commercial pump spec fuels far ahead. European costs levels? DYI fuels looking good. No pump fuel due to what-ever? THEN diy fuels shine bright.
This article was smart-brains electronic magazine discussion group critiqued before print publication selection. And the publishing editor is very, very, keep it possible/doable selective in this book series.
tree-farmer Steve unruh