Method of cleaning stack gas and using same for generation of el

Details Method of cleaning stack gas and using same for generation of el Method of cleaning stack gas and using same for generation of el

1976-06-04

1977-10-25

Lutter, Frank W.

Metallurgical apparatus

Process

55 21, 55 94, 55213, 55226, 55385D, 261DIG56, 266147, 266157, 266 89, C21B 722

Patent

active

040553310

ABSTRACT:
Stack gas is first passed through a coarse-particle separator and then a prescrubbing tower. Then this gas, which is under pressure, is passed through a pair of differential-pressure (annular-gap) washers. The output side of one of the washers is connected directly to a droplet separator at the output of the system. The outlet of the other washer is connected through a turbine driving an electric generator and having its output side in turn connected to the droplet separator. The control body of at least the washer which is connected directly to the droplet separator is adjustable so as to maintain a constant backpressure in the system at the blast furnace from which the stack gas comes. The washer connected to the turbine is set up to pass at least four times as much of the gas as the other washers so that most of the gas passes through the turbine, undergoing a pressure drop that is transformed into the work of driving the turbine and generates electricity.

REFERENCES:
patent: 3041059 (1962-06-01), Powell
patent: 3045996 (1962-07-01), Rice
patent: 3726065 (1973-04-01), Hausberg et al.
patent: 3820307 (1974-06-01), Hausberg et al.
patent: 3854300 (1974-12-01), Gerhold
patent: 3976454 (1976-08-01), Hausberg et al.

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