Method and device for preventing dry-out in a boiler of a tower solar concentration power plant

A method for generating a steam cycle at a pressure of more than 160 bars, and at a temperature of about 600° C., using an industrial steam generator having a power of more than 100 MW, with a solar receiver admitting an incident solar flux of about 600 kW/m2, the generator including an evaporator followed by a superheater, a separator drum, situated between the evaporator and the superheater, being vertically superimposed on a mixing drum, the separator drum including an outlet configuered to send saturated steam toward the superheater and the mixing drum including an inlet configured to intake feed water and being connected to a water return pipe toward the evaporator, the water return pipe including a circulation pump, the separator drum and the mixing drum being in communication via at least one connecting pipe, the method comprising:

• generating a water-steam mixture in the evaporator by transferring heat from the incident solar flux onto the evaporator;
• separating the water-steam mixture into saturated water and saturated steam in the separator drum, the saturated steam having a pressure in a range of from 160 to 200 bars and a temperature in a range of from 347 to 366° C.;
• and
• injecting the feed water into the mixing drum, where the feed water is mixed with the saturated water from the separator drum, a mixed water next returning toward the evaporator via the water return pipe,
• wherein a temperature of the mixed water entering the evaporator is below a saturated steam temperature, by a value in a range of from 5 to 15° C.