Method for gasification of large-sized vegetable materials using

Details Method for gasification of large-sized vegetable materials using Method for gasification of large-sized vegetable materials using

1981-06-10

1983-11-08

Kratz, Peter F.

Gas: heating and illuminating

Processes

Wood

48203, C10J 314

Patent

active

044140029

ABSTRACT:
A method for the gasification of large-sized vegetable materials using a ed bed gasogene. This gasification method includes the steps of moving the materials in a fixed treatment chamber extending substantially horizontally and having opposite rear and forward ends, the materials being moved from the rear end towards the forward end through substantially the whole transverse section of the chamber and being successfully subjected to drying, pyrolysis and gasification in successive areas of the chamber. Hot gases are generated by combustion in a zone free of materials to be treated and located in the chamber in front of the natural talus created by the front of the whole bulk of materials which occupy substantially the whole transverse section of the chamber. Gases are extracted from the chamber and recycled into the zone in front of the natural talus, whereby tar produced from the pyrolysis and carried away by the extracted gases is eliminated by heating the recycled gases in the zone. The temperature of the extracted gases is at least 500.degree. C. after having passed through the materials contained in the chamber. The gas having passed through the material in the gasification area is taken out from the chamber at a location in front of the pyrolysis area product, whereby the product gas is freed from tars.

REFERENCES:
patent: 1639391 (1927-08-01), Wallace
patent: 1814463 (1931-07-01), Trent
patent: 1964877 (1934-07-01), Hereng
patent: 3990865 (1976-11-01), Cybriwsky et al.

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