Method and apparatus for degassing liquid sulfur
AssigneeDynamax Engineering Ltd.
InventorJames G. (Jim) Louie
Life of this patent
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Abstract
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.
Claims25
A process for degassing a stream of liquid sulfur containing at least hydrogen sulfide comprising:
- providing a degassing vessel having a vapor space and one or more static mixing devices extending downwardly through the vapor space of the degassing vessel;
- flowing a stream of an oxidizing gas through the vapor space of the degassing vessel;
- directing the liquid sulfur onto the one or more static mixing devices for flowing the liquid sulfur down the one or more static mixing devices for forming a degassing surface and intimately exposing the degassing surface to the oxidizing gas while avoiding freefall of the liquid sulfur in the vapor space;
- and
- producing a stream of degassed liquid sulfur and a stream of product gas containing hydrogen sulfide.
Apparatus for degassing a stream of liquid sulfur containing at least hydrogen sulfide comprising:
- a degassing vessel having a vapor space;
- one or more static mixing devices extending downwardly through the vapor space of the degassing vessel;
- a liquid sulfur inlet at an upper end of the degassing vessel for directing liquid sulfur onto the one or more static mixing devices for flowing liquid sulfur down the one or more static mixing devices while avoiding freefall of the liquid sulfur in the vapor space;
- and
- a gas inlet and a gas outlet through which a stream of an oxidizing gas flows through the vapor space of degassing vessel,
- wherein the liquid sulfur flows down the one or more static mixing devices for forming a degassing surface which is intimately exposed to the oxidizing gas for producing a stream of degassed liquid sulfur and a stream of product gas containing hydrogen sulfide.
Dependencies are inferred from the claim text.