Gas: heating and illuminating – Processes – Producer
Patent
1988-05-10
1991-06-25
Woodard, Joye L.
Gas: heating and illuminating
Processes
Producer
48209, C10J 306
Patent
active
050264036
ABSTRACT:
A three stage process for producing producer gas from biomass or other carbonizable waste products using a double gasifier is described. A reactor for the three stage process comprising a primary, an intermediate and secondary gasifier is also described. The primary gasifier utilizes a vertically adjustable fill level sieve and a discharge mechanism for the combustion residues. The primary fuel and the preheated primary air are supplied to the primary gasifier via the reactor base. The secondary gasifier, a coke producer is connected to the primary gasifier downstream. The intermediate gasifier, a fluw flow gas converter, is supplied with secondary air. The low temperature carbonized gas from the primary gasifier, as well as the carbon particles leaving the primary gasifier are introduced into the secondary gasifier through a radially symmetrical ring nozzle to provide a long residence time under reducing conditions. The reactor is also optionally provided with one other gas, comprising at least in part the product, producer gas, introduced via a bypass arrangement.
REFERENCES:
patent: 927418 (1909-07-01), Loomis et al.
patent: 2805188 (1957-09-01), Josenhans
patent: 4082520 (1978-04-01), Baron et al.
patent: 4153426 (1979-05-01), Wintrell
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