Basf Se Corporation

Heinz Drieβ

Andreas Wölfert

Herald Jachow

The invention relates to a reactor () and a process for continuously preparing HS by converting a reactant mixture which comprises essentially gaseous sulfur and hydrogen over a catalyst, comprising a sulfur melt () at least in a lower subregion () of the reactor (), into which gaseous hydrogen is introduced. The catalyst is arranged in at least one U-shaped tube () which is partly in contact with the sulfur melt (), the at least one U-shaped tube () having at least one entry orifice () on a limb () above the sulfur melt (), through which the reactant mixture can enter the U-shaped tube () from a reactant region () of the reactor (), having a flow path within the at least one U-shaped tube, along which the reactant mixture can be converted in a reaction region comprising the catalyst (), and having at least one exit orifice () in another limb () through which a product can exit into a product region ().

Reactor, and method for the production of hydrogen sulfide

Hydrogen sulfide HS is prepared from a crude gas stream containing HS and polysulfanes (HS). The crude gas stream is passed at temperatures of from 114 to 165&#xb0; C. through catalytically active material present in a vessel, and sulfur is collected in the bottom of the vessel and recycled to the preparation of HS. This process may be accomplished in an apparatus including a reactor for reacting sulfur and hydrogen, a cooler for receiving and cooling an HS-containing crude gas stream passed out of the reactor to between 114 to 165&#xb0; C., a vessel coupled to the cooler, the vessel including catalytically active material and a bottom for collecting sulfur obtained from the crude gas stream, and a line which is connected to the bottom of the vessel and opens into the cooler or into the reactor, for recycling sulfur.

Method and device for continuous production of hydrogen sulphide

The present invention describes a reactor () for continuously preparing hydrogen sulfide HS from hydrogen and sulfur, comprising a distributor device () for distributing gaseous hydrogen in a sulfur melt () present at least in a lower part of the reactor. The distributor device () is arranged in the sulfur melt () and comprises a distributor plate () which is arranged in the reactor () and has an edge () extending downward and, if appropriate, has passage orifices (). The hydrogen from a hydrogen bubble which forms below the distributor plate () is (for example through the passage orifices ()) distributed in the sulfur melt () via the distributor plate ().

Reactor and method for production of hydrogen sulphide

The invention relates to a process and to an apparatus for preparing hydrogen sulfide HS by converting a reactant mixture which comprises gaseous sulfur and hydrogen over a solid catalyst. The reactant mixture is converted at a pressure of from 0.5 to 10 bar absolute, a temperature of from 300 to 450&#xb0; C. and a sulfur excess in a reactor (). The sulfur excess corresponds to a ratio of excess sulfur to HS prepared of from 0.2 to 3 kg of sulfur per kg of HS prepared.

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Ludwigshafen, Germany

Heinz Drieβ