Reactor and process for preparing hydrogen sulphide
AssigneeEvonik Industries AG
InventorsCaspar-Heinrich Finkeldei, Chiu Kee Cheung, Ralf Maassen, Geert Van Eester, Stefan Wenner, Martin Koerfer
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Abstract
The present invention relates to a reactor and to a process for synthesis of hydrogen sulphide from elemental sulphur and hydrogen at elevated pressure and elevated temperature. The invention further relates to the use of the reactor for preparation of hydrogen sulphide in high yield and with a low H2Sx content.
Claims21
Reactor (1) suitable for continuous preparation of hydrogen sulphide by exothermic reaction of sulphur and hydrogen to form a final product gas mixture Pfinal comprising hydrogen sulphide and sulphur at elevated temperature and elevated pressure relative to standard conditions, said reactor (1) comprising
- a lower reactor region (2) suitable for accommodating a sulphur melt (3), and
- a gas collecting region (6) suitable for accommodating the product gas mixture Pfinal at elevated temperature and elevated pressure relative to standard conditions,
- characterized in that the reactor (1) comprises at least two non-pressure-bearing first caverns (4) and at least one supply device (5, 5a) suitable for controlled supply of pressurized gaseous hydrogen per first cavern, said caverns (4) being suitable for at least temporary accommodation of a product gas mixture P1 which forms in exothermic reaction and comprises hydrogen sulphide, sulphur and hydrogen.
Process for preparing hydrogen sulphide by exothermic reaction of sulphur with hydrogen at elevated temperature and elevated pressure relative to standard conditions to form a product gas mixture Pfinal comprising hydrogen sulphide and sulphur, said process comprising the following steps:
- providing a sulphur melt in a lower reactor region of a pressurized reactor,
- supplying pressurized hydrogen into the sulphur melt, the hydrogen supplied being accommodated at least partly, together with sulphur converted from the sulphur melt to the gaseous state, by at least two non-pressure-bearing first caverns,
- at least temporarily leaving the hydrogen and the sulphur in the first caverns, so as to form, in exothermic reaction, a product gas mixture P1 comprising hydrogen sulphide, sulphur and hydrogen, and
- collecting the product gas mixture Pfinal in a gas collecting region.
Dependencies are inferred from the claim text.