Apparatus and method to achieve gasification of bark and the like
A system is described to achieve gasification of bark pieces, that comprises: a vessel to receive the bark pieces which are introduced at an upper region of the vessel and are burned at a lower region below the upper region. The bark pieces settle from the upper region downward to the lower region in the course of burning and tend to bridge as they settle to leave a bypass hole in the bulk thereof; means to effect combustion of the bark pieces at the lower region; a reciprocating chain mechanism comprising a pair of chains oriented across the vessel and interconnected such that when one chain of the pair moves transversely across the vessel in one direction the other chain of the pair moves transversely across the vessel in the opposite direction. The reciprocating movement of the chains serves to apply angular impelling forces on the bark pieces whereby the individual pieces thereof are turned through angles, first in one direction and then in the other direction, to disrupt the bridging.
- Assignee:
- NOV; NOV-87-057085; EDB-87-093544
- Patent Number(s):
- US 4655791
- OSTI ID:
- 6803267
- Resource Relation:
- Patent File Date: Filed date 22 Mar 1985
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
BARK
COMBUSTION
GASIFICATION
COMBUSTION CHAMBERS
DESIGN
OPERATION
CONTAINERS
INCIDENCE ANGLE
BODY
CHEMICAL REACTIONS
OXIDATION
PLANT TISSUES
THERMOCHEMICAL PROCESSES
TISSUES
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421000 - Engineering- Combustion Systems