Process for the wastewater-free operation of a wet process flue gas desulphurisation plant of a steam power plant and a steam power plant

摘要

In a method for wastewater-free operation of a in the flue gas stream (9a-9d) of a fossil-fired steam generator or boiler (2) of a steam power plant (8) integrated, operating on a wet flue gas desulphurisation plant (5) whose wastewater (14) in a spray dryer (1 ) is vaporized by means of a gas flow, in particular the flue gas stream, provided heat energy, a solution is to be created that allows a comparison with the known methods improved and energetically favorable integration of wastewater evaporation in a steam power plant, without incurred in the wastewater evaporation salts are fly ash contaminated. This is achieved by evaporating the waste water (14) in the spray dryer (1) by means of a supplied hot air stream (15) which has sufficient temperature for the evaporation of the waste water (14).