US 8,025,719 B2Granted

Regenerated sulfur recovery apparatus

AssigneeSumitomo Chemical Company, Limited

InventorsYoshihisa Tokumasu, Kazuo Fujita, Fumio Kubo

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Abstract

A regenerated sulfur recovery apparatus positioned in a sulfur recovery plant, which apparatus contains a sulfur purifier that cools gaseous sulfur and condensates it, forming liquid sulfur while removing impurities contained therein; the apparatus containing a steam supplying means for melting solid sulfur deposited on an inner wall of the sulfur purifier, a molten sulfur reservoir that recovers and stores the melted sulfur, a reservoir heating means that heats the reservoir, an exhaust gas line that directs to the outside an exhaust gas formed in the reservoir when the reservoir is heated by the reservoir heating means, and an inert gas supply means that supplies an inert gas to the reservoir, such that the inert gas supplied into the reservoir flows to the outside through the exhaust gas line when molten sulfur stored in the reservoir is discharged from the reservoir.

Claims1

Dependent claims

A regenerated sulfur recovery apparatus positioned in a sulfur recovery plant which apparatus comprises a sulfur purifier which cools gaseous sulfur so as to condensate it to form liquid sulfur while removing impurities contained therein, characterized in

that it comprises
a steam supplying means which supplies steam into the sulfur purifier, so that solid sulfur deposited onto an inner wall of the sulfur purifier is melted,
a molten sulfur reservoir which recovers and stores such sulfur melted by the steam supplying means,
a reservoir heating means which heats the molten sulfur reservoir,
an exhaust gas line which directs an exhaust gas formed in the molten sulfur reservoir to its outside which gas is formed when the molten sulfur reservoir is heated by the reservoir heating means, and
an inert gas supply means which supplies an inert gas to the molten sulfur reservoir, and
that the inert gas supply means supplies the inert gas such that the inert gas supplied into the molten sulfur reservoir flows to its outside through the exhaust gas line when the molten sulfur stored in the molten sulfur reservoir is discharged from the molten sulfur reservoir.

4 more elements

Dependencies are inferred from the claim text.