Extended thermal stage sulfur recovery process
US10508034B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 25, 2019 |
| Grant date | Dec 17, 2019 |
| Priority date | — |
| Expiry date | Jan 25, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2257/304
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for recovering sulfur in a sulfur recovery unit comprising the steps of reacting hydrogen sulfide and oxygen in the reaction furnace at a minimum reaction temperature to produce a reaction effluent; reducing the temperature of the reaction effluent from the minimum reaction temperature to a boiler section outlet temperature to produce a cooled effluent, the cooled effluent comprises hydrogen sulfide, sulfur dioxide, and sulfur-containing contaminants; reacting the hydrogen sulfide, sulfur dioxide, and sulfur-containing contaminants in the catalytic extension to produce a boiler catalytic effluent; reducing the boiler catalytic effluent temperature such that the elemental sulfur condenses to form liquid sulfur and a gases stream; reacting the hydrogen sulfide and sulfur-containing contaminants with the oxygen to produce an oxidizer outlet stream comprises sulfur dioxide; and separating the sulfur dioxide in the scrubbing unit to produce a recycle stream and an effluent gases, the recycle stream comprises sulfur dioxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.