Verfahren zur Rauchgasentschwefelung, wobei nach einer Naß-Rauchgasentschwefelungsanlage die verunreinigte Waschlösung einer speziellen Behandlung zugeführt wird

Sulphate recovery process for wet exhaust gas desulphurising plant

Abstract

Method for treating water containing magnesium sulphate with calcium ions so that precipitation occurs and the solid matter is separated from the water, where the novelty is that the magnesium sulphate-laden water (1) is mixed in a vessel (2) with a reduced quantity of calcium hydroxide suspension (3), a proportion of ash, and if desired a flocculating agent (10); solid matter is extracted by sedimentation (13) and/or filtration, e.g. using a filter band (7); the filtrate (8) is partly recirculated into the desulphurisation plant (15), and partly drawn off (8,12) for other uses; and the solid matter (9,14) is used or sent for disposal.

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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    US-7575625-B2August 18, 2009Ashland Licensing And Intellectual Property LlcMethod for separating solids from gas scrubbers
    WO-2006056222-A1June 01, 2006Ashland Licensing And Intellectual Property Llc.Procede de separation de matieres solides de laveurs de gaz