Maybe you could tell us the statement from your Thesis?
What finding/truth are you putting in writing, needing defending?
This is the challenge you have with papers for degrees people.
You have said needing to make producer gas for compressing. For storage? For later heating fuel substitute uses like flame heaters?
The needs for these are very much different than internal combustion engine fuels.
Heating fuels for cooking especial must not transfer unsavory flavors over into the food, or the cooks working area. Why “clean”, “clean” fuels are favored for foods cooking. Even liquid gasoline fuels stove use a very special grade of purified gasoline. Put regular engine gasoline in a cooking stove and stink! stink! stink!
Space heating fuels not so critical for not-pure-blue flame. The not under pressure combustion products are carefully duct-ed outside away from people.
Motor grade fuels as an example are stinky, staining, actually hazardous for breathing and skin contact. They NEED the higher energy density as well as satisfying the engines needs to controllable speed/flame-front combust under pressure.
The ONLY way to judge internal combustion motor grade fuels in-use by combustion color is viewing it while under pressure/temperature loaded conditions in a working engine. This is done with special engines with view-ports. And this is done with special quartz glass center spark plugs.
The historical papers and readings Tom Collins and I have referred to will say there was even a different need for light illuminating producer gases. Heat unwanted byproduct to illumination. So not the high energy density needs. Needed to have available free carbons to burn and yellow glow for the illumination.
Yes too many words by me.
Different fuel, or HC input stocks gases are need for different downstream uses.
No ONE gas can satisfy all needs.
Blue flares are cooking gas flares.
You approach by making the best gas for a single purpose need. Using the raw input stocks best to satisfy that ONE need optimally. With sub-optimal results for other use/needs.
Or . . . . you have a free-waste input stock and make the best you can make with that. THEN narrow down the use/needs to what you can make from this free-waste input stock produced gasses mix.
I hope this makes sense to you.
This is how the real world works to get things done.
You would not want to walk in my boots. Heavy rubber with thick wool liners. For COLD, freezing wet mud’s.
Your feet would overh heat and sweat.
Wearing your boots my feet would always be wet and cold.
Producer gasses (and thier open combustion flames) come in many best0use variations.
Tree-farmer steve unruh