Bottom Lit Updraft Gasifier-Burner with Syngas Tap-Off

Basics

• This page aims to explore the viability of, then design and development of a Bottom Lit, Updraft Gasifier with varying function as either a Furnace-Boiler, or as a Gasifier for Syngas production depending on demand.

Design Decisions/Principles

Overall

• Bottom Lit was chosen to have the granular fuel (either Wood Chips or a Pellet Fuel / Granular Activated Carbon etc) act as a Packed Bed Filter for the Syngas/Exhaust Gas
• Syngas will either flow into a collection device for use in a Gas Burner Stove, Use in a Gen-Set, Use in Mantle Lamps, or Storage etc, OR flow past this into a combustion area
  • Using some amount of this syngas for reaction vessel heating/the gasification reaction via Tuyere injecting etc may not be ruled out per se
• ”Backup Filters” may be worthwhile (akin to a Pre-Motor Filter in a Vacuum Cleaner etc, but for all intensive purposes only Bottom Ash (and the occasional cleanup/maintainance based Economizer Ash ) will be produced
• External Fuel Storage shall be modular
  • With both Manual Airlocks/Hatches, and Automated Systems such as Rotary Airlocks / Augers etc being options
• Overall size/dimensions are targeted to be about the size of a (North American market) Refrigerator or Hot Water Heater etc
• Control shall be computerized with redundant sensors + and easily understood lockouts/fault conditions
  • IE Ease of Use + Maintenance is desirable above all else
  • NOT unclear lockouts/no means of declaring what sensor is broken etc
• Sintered / Slag ash is preferred, but may not be viable at the small scale
  • If so, dry ash collection with a well sealed hopper + potentially vacuum based removal (to reduce dust emissions) is preferred to a Wet Ash Hopper system due to the limitations of decentralized industrial wwt
• Explosion Proof may be overkill, but that and/or Intrinsically Safe may be preferable when dealing with Syngas

Materials

• Aluminum / Aluminum Alloy (preferably Hard Anodized ) for non-high temperature, non-high corrosion risk structural parts wherever possible
• Stainless Steel or better for High Temperature/High Corrosion Risk Areas
• Minimal Plastic, but Slow-Biodegradable If Required
  • Such as PLA etc
• Lead Free Brass for any pipe fittings etc
• EMT or better based Electrical Routing
  • Widespread Grounding + Bonding + EM Noise Shielding
• High Ingress Prevention rating preferably

Internal Links

• Windhager PuroWIN / Windhager PuroWIN DELUXE
  • Heavily inspired by these however the difference of allowing indirect syngas use, increased modularity, designed+tested to use more fuels, probably move the touchscreen to a more ADA accessible height, more Off The Shelf / Autoderivitive sensors, more Design for Cleaning / Design for Maintenance aspects etc
  • Still though an absolutely BEAUTIFUL design