Liquid heaters and vaporizers – Circulation – With start-up operations
Patent
1978-12-18
1980-11-11
Favors, Edward G.
Liquid heaters and vaporizers
Circulation
With start-up operations
122451S, 122479S, F22D 700
Patent
active
042326354
ABSTRACT:
Method of improving the permissible load-varying speed of a once-through steam generator having a water separating vessel connected between a heating surface of the once-through steam generator and a heating surface of a superheater with a valve connected into a steam delivery line extending from the water separating device to the superheater heating surface, the valve being openable during start-up and shut-down of the once-through steam generator, which includes closing the valve to such a limited extent, depending upon the temperature of the water separating vessel, that the temperature of the water separating vessel corresponds to boiling temperature of feedwater supplied to the once-through steam generator at a pressure at which a transition occurs with respect to pure once-through operation, and device for performing the foregoing method.
REFERENCES:
patent: 3370573 (1968-02-01), Hanzalek et al.
patent: 3411300 (1968-11-01), Schuetzenduebel et al.
patent: 3789806 (1974-02-01), Gorzegmo
patent: 3954087 (1976-05-01), Stevens et al.
patent: 4068475 (1978-01-01), Binstock
patent: 4099384 (1978-07-01), Stevens et al.
Favors Edward G.
Kraftwerk Union Aktiengesellschaft
Lerner Herbert L.
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