Gas: heating and illuminating – Processes – Fuel mixtures
Patent
1990-09-07
1992-03-10
Kratz, Peter
Gas: heating and illuminating
Processes
Fuel mixtures
48 66, 48203, 48206, 48210, 48DIG10, C10J 316
Patent
active
050946692
ABSTRACT:
In a rotary-grate gas producer operated under a pressure from 10 to 100 bars, the fuel constitutes a fixed bed, which slow descends. The mixture of gasifying agents contains water vapor and oxygen is supplied to the fixed bed through a rotary grate and through an ash layer, which is disposed on the rotary grate. In order to ensure that the ash will have a particle size in a desired range, a first pressure (p1) is measured below the rotary grate and a second pressure (p2) is measured approximately at the top of the ash layer. The pressure difference (p1-p2) is compared with a setpoint, which is associated with the current ratio of water vapor to oxygen in the mixture of gasifying agent. Said ratio is increased when the pressure difference is insufficient and the ratio is decreased if the pressure difference is excessive.
REFERENCES:
patent: 3930811 (1976-01-01), Hiller et al.
patent: 3937620 (1976-02-01), Rudolph et al.
patent: 4014664 (1977-03-01), Kupfer et al.
patent: 4088455 (1978-05-01), Kohlen et al.
patent: 4309194 (1982-01-01), Salvador et al.
patent: 4608059 (1986-08-01), Kupfer eet al.
Herbert Peter
Schmitt Gerhard
Kratz Peter
Metallgesellschaft Aktiengesellschaft
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