PDF Publication Title:
Text from PDF Page: 058
EPA Combined Heat and Power Partnership Biomass CHP Catalog Table 5-9. Comparison of Fixed Bed Gasification Technologies Type of Gasifier Downdraft Updraft Crossflow Operation Biomass is introduced from the top and moves downward. Oxidizer (air) is introduced at the top and flows downward. Syngas is extracted at the bottom at grate level. Biomass is introduced from the top and moves downward. Oxidizer is introduced at the bottom and flows upward. Some drying occurs. Syngas is extracted at the top. Biomass is introduced from the top and moves downward. Oxidizer is introduced at the bottom and flows across the bed. Syngas is extracted opposite the air nozzle at the grate. Advantages Tars and particulate in the syngas are lower, allowing direct use in some engines without cleanup. The grate is not exposed to high temperatures. Can handle higher-moisture biomass. Higher temperatures can destroy some toxins and slag minerals and metal. Higher tar content adds to heating value. Simplest of designs. Stronger circulation in the hot zone. Lower temperatures allow the use of less expensive construction materials. Disadvantages Biomass must be very dry (<20 percent moisture content). The syngas is hot and must be cooled if compression or extensive cleanup is required. About 4 to 7 percent of the carbon is unconverted and remains in the ash. Higher tar content can foul engines or compressors. The grate is exposed to high temperatures and must be cooled or otherwise protected. More complicated to operate. Reported issues with slagging. High levels of carbon (33%) in the ash. Table 5-10. Typical Characteristics of a Fixed Bed Gasifier Fuel size (inches) Fuel ash content (% weight) Operating temperature (°F) Control Turn-down ratio Construction material Capacity (MWthermal) (tons biomass/day) Start-up time Operator attention Tar content (lb/MMBtu product gas) Heating value (Btu/scf) HHV Source: GasNet, n.d. 0.4-4 <6 1450-2550 Simple 4:1 Mild steel + refractory <5 (<30) Minutes Low <1.2 130 Parameter Fixed Bed, Downdraft 5. Biomass Conversion Technologies 48PDF Image | Biomass Combined Heat and Power Catalog of Technologies
PDF Search Title:
Biomass Combined Heat and Power Catalog of TechnologiesOriginal File Name Searched:
biomass_chp_catalog.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |