Process and device for separating a sulfur-lye suspension
AssigneeLinde Aktiengesellschaft
InventorGuenter Weber
Life of this patent
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Abstract
For separating sulfur from a sulfur-lye suspension, the suspension is fed into a flooded separation tank, a temperature above the melting temperature of sulfur is maintained in the separation tank, and liquid sulfur and lye are withdrawn from the separation tank. To reduce the formation of sodium thiosulfate, the area of the interfacial separation layer between liquid sulfur and lye is maintained as small as possible in separation tank (15) by providing that the liquid sulfur be fed into a relatively small diameter vertical separation pipe (4), in which the separation layer (6) between liquid sulfur and lye is established, and the liquid sulfur is drained out through separation pipe (4). (FIG. 1)
Claims22
In a process for separating sulfur from a sulfur-lye suspension, the sulfur-lye suspension is fed into a separation tank, the temperature inside the separation tank is maintained above the melting temperature of sulfur, and liquid sulfur and lye are separated and withdrawn from the separation tank, the improvement wherein the separation tank is operated in the flooded condition, the liquid sulfur is fed into a vertical separation pipe in which a separation layer between the liquid sulfur and lye is established, and the liquid sulfur is drained out of the separation pipe.
Apparatus suitable for separating sulfur from a sulfur-lye suspension comprising a separation tank provided with a feed pipe for the sulfur-lye suspension, and a drain pipe for lye;
- discharge means for liquid sulfur positioned within said separation tank;
- a vertical separation pipe (4) in communication with the discharge means for the liquid sulfur, and in further communication with an outlet pipe (9) for liquid sulfur, and level control means for continuously maintaining a separation layer within the vertical separation pipe between the liquid sulfur and lye.
Dependencies are inferred from the claim text.