I hate to be the rain on parade guy, but... you are talking about chemical engineering that will involve working with gases like hydrogen, carbon monoxide and methane at a large scale. You're simply not going to be allowed to even purchase the raw materials you need in the quantities you need unless you are running a proper chemical company, complete with all the certifications and HSE work. The investment cost is huge, and requires a lot of specialized engineering plus the purchase of a suitable industrial estate that is large and has a wide safety zone against all surrounding neighbours.

If you're serious about this, I'd recommend reading Max Gergel's book "Excuse me sir, would you like to buy a kilo of isopropyl bromide", and then imagine what you would need to go through in order to start an operation 10x to 100x bigger than Gergel's in todays regulatory regime.