Method and apparatus for degassing liquid sulfur

B - Operations – Transporting – 01 – D

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B01D 19/00 (2006.01) B01D 53/52 (2006.01) B01F 5/00 (2006.01)

Patent

CA 2467947

A vessel is mounted external to a liquid sulfur storage pit for degassing liquid sulfur at atmospheric pressure. Liquid sulfur is re- circulated from the pit to a static mixing device extending from a head space to the liquid sulfur which provides intimate contact of the liquid sulfur as it flows downwardly and sweep air flowing through the head space above the pit. Further, the static mixing device prevents free fall of liquid sulfur and the hazards of static electricity associated therewith. Use of a heat traced gas outlet induces flow of sweep gas from the system, obviating the need for a steam eductor or blower. 20

Un récipient est installé à l'extérieur d'une fosse de soufre liquide pour le dégazage du soufre liquide à la pression atmosphérique. Le soufre liquide est recirculé de la fosse jusqu'à un mélangeur statique qui va d'un espace de dessus jusqu'au soufre liquide. Ce mélangeur assure le contact étroit du soufre liquide à mesure de sa circulation vers le bas et il balaye l'air circulant dans l'espace au-dessus de la fosse. De plus, le mélangeur statique empêche la chute libre du soufre liquide et les dangers d'électricité statique associés. L'utilisation d'un orifice de sortie de gaz à traçage thermique déclenche la circulation du gaz de balayage à partir du système, ce qui évite le besoin d'un éjecteur ou soufflante de vapeur. 20.

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