Method and device for the continuous production of hydrogen sulfide
AssigneeBASF SE
InventorsAndreas Wölfert, Herald Jachow, Heinz Drieβ
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Abstract
The invention relates to a process and to an apparatus for preparing hydrogen sulfide H2S 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° C. and a sulfur excess in a reactor (1). The sulfur excess corresponds to a ratio of excess sulfur to H2S prepared of from 0.2 to 3 kg of sulfur per kg of H2S prepared.
Claims8
A process for preparing hydrogen sulfide H2S by converting a reactant mixture which comprises gaseous sulfur and hydrogen over a solid catalyst (22), which comprises converting the reactant mixture at a pressure of from 0.5 to 10 bar absolute, a temperature of from 300 to 450° C. and a sulfur excess in a reactor, the sulfur excess corresponding to a ratio of excess sulfur to H2S prepared of from 0.2 to 3 kg of sulfur per kg of H2S prepared, wherein the reactant mixture is obtained by passing gaseous hydrogen through a sulfur melt (9) into a reactant region (10) of the reactor (1), the sulfur melt (9) having a temperature of from 300 to 450° C., wherein a line (30) is provided between the cooler (40) and the reactor (1), through which, the crude gas stream is passed in a direction from the reactor (1) into the cooler (40) and through which the recycled sulfur is passed in an opposite direction from the cooler (40) into the reactor (1).
An apparatus for continuously preparing hydrogen sulfide H2S, comprising
- a reactor (1) for converting a reactant mixture comprising gaseous sulfur and hydrogen over a solid catalyst (22) at a pressure of from 0.5 to 10 bar absolute, a temperature of from 300 to 450° C. and a sulfur excess which corresponds to a ratio of excess sulfur to H2S prepared of from 0.2 to 3 kg of sulfur per kg of H2S prepared, and
- a cooler (40) which is connected to the reactor (1) and is for cooling an H2S-containing crude gas stream passed out of the reactor (1) to condense at least a portion of the sulfur excess,
- a line (30) being arranged between the reactor (1) and the cooler (40) for passing the crude gas stream in a direction from the reactor (1) into the cooler (40) and for recycling sulfur in an opposite direction out of the cooler (40) into the reactor (1).
Dependencies are inferred from the claim text.