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AssigneeHoechst Aktiengesellschaft
InventorsSiegfried Benninger, Karl Reining, Werner Krasel
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The invention relates to an open dissolving chamber for rock salt and to an apparatus for the production, free from vapors, of concentrated, aqueous sodium chloride crude brine by continuously dissolving rock salt in this dissolving chamber. The dissolving chamber contains a heap of rock salt with which the brine which is unsaturated in respect of salt comes into contact. The brine thereby becomes saturated with sodium chloride and then passes out of the dissolving chamber. In the present apparatus, the unsaturated brine enters at the base of the dissolving chamber. The saturated crude brine is removed from the rock salt through at least one vertical or inclined screen which largely holds back suspended rock salt particles. The liquid level of the saturated crude brine in the dissolving chamber should not reach the surface of the heap of rock salt, and the side of the screen facing the interior of the dissolving chamber should be completely covered with a mixture of saturated crude brine and rock salt.
Apparatus for the production, free from vapors, of concentrated, aqueous sodium chloride crude brine, comprising a dissolving chamber for dissolving rock salt which is equipped with appliances for feeding in brine which is unsaturated in respect of salt and for removing saturated crude brine, wherein pipes for the admission of unsaturated brine are installed on the floor of the dissolving chamber, the dissolving chamber has an elongate layout and at least one vertical or inclined screen which is permeable by brine, but not by rock salt and which delimits a salt-free space in the dissolving chamber, is installed longitudinally in the dissolving chamber.
Dependencies are inferred from the claim text.