Gasifier method and apparatus

Patent · Tue May 06 00:00:00 EDT 1986

OSTI ID:5582389

Caughey, R A

A gas generator apparatus is described for generating combustible gas by pyrolysis of biomass material, the generator apparatus comprising, in combination an enclosed chamber, parallel uniformly inclined and axially-extending support tubes, each of which has a hollow interior axial passage connecting a lower inlet end and an upper outlet end, the support tubes dividing the chamber to form a single gas-generating first chamber region situated above the tubes and a plenum second chamber region below the tubes, the tubes being adapted for oscillation about the axis thereof in a common direction to facilitate the delivery of ash and unburned biomass into the second chamber region, means for introducing biomass material into the first chamber region onto the upper ends of the tubes, means for introducing primary air into the second chamber region for flowing upwardly between the tubes for pyrolysis of the biomass material, means for introducing cooling air into the passages of the tubes at the lower inlet ends thereof for cooling the tubes, the cooling air becoming heated by a heat exchange process as it cools the tubes, and the air being vented from the upper ends thereof, means for exhausting from the first chamber region combustible gas generated by the pyrolysis of the biomass, means for removing ash and unburned biomass from the first chamber region at the lower ends of the tubes, and screw discharge means for removing ash and unburned biomass from the second chamber region.

• Assignee: New Hampshire Flakeboard, Antrim, NH
• Patent Number(s): US 4586442
• OSTI ID: 5582389
• Resource Relation: Patent File Date: Filed date 25 Jun 1984
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
BIOMASS
PYROLYSIS
BIOREACTORS
DESIGN
OPERATION
AIR FLOW
ASHES
COOLING
EXHAUST SYSTEMS
GAS GENERATORS
HEAT TRANSFER
OSCILLATIONS
PIPES
CHEMICAL REACTIONS
DECOMPOSITION
ENERGY SOURCES
ENERGY TRANSFER
FLUID FLOW
GAS FLOW
RENEWABLE ENERGY SOURCES
RESIDUES
THERMOCHEMICAL PROCESSES
140504* - Solar Energy Conversion- Biomass Production & Conversion- (-1989)