System and process for conversion of biomass into usable energy
This patent describes a system for converting biomass to usable energy. It includes: a biomass feed apparatus which includes a feed hopper with an agitator, at least one auger to carry biomass feed from the hopper, and an airlock to prevent backflow of combustible gases into the hopper; a fluidized bed gasifier which receives biomass feed from the feed auger and which has a fluidizing air inlet, and which produces combustible gas and particulates containing activated carbon; a plurality of solids removal cyclones which are arranged in series and which receive the products of the fluidized bed gasifier and remove at least 99% by weight of the particulates from the combustible gas; and two stage combustion apparatus which includes a first stage cyclonic combustion chamber with a single gas inlet for receiving a combined stream of combustible gas from the solids removal cyclones and primary combustion air, a second stage which has an inlet for receiving gases exiting the first stage and a secondary combustion air stream, and a boiler which receives combustion gases from the second stage and in which the heat from the combustion gases converts water to steam.
- Assignee:
- Texas A and M University, College Station, TX
- Patent Number(s):
- US 4848249
- Application Number:
- PPN: US 7-126832A
- OSTI ID:
- 5383575
- Resource Relation:
- Patent File Date: 30 Nov 1987
- Country of Publication:
- United States
- Language:
- English
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