Apparatus for continuous production of tetraphosphorus polysulfides
AssigneeAtochem
InventorsPhilippe Engel, Alain Courant
Life of this patent
Estimating the term…
Abstract
The tetraphosphorus polysulfides of the formula P.sub.4 S.sub.x, wherein X is at least 3, especially tetraphosphorus decasulfide, P.sub.4 S.sub.10, are prepared by (a) establishing a continuously circulating closed loop of a liquid reaction mixture which comprises desired final product tetraphosphorus polysulfide, (b) continuously introducing liquid phosphorus and liquid sulfur into such continuously circulating reaction mixture and therein continuously reacting the liquid phosphorus with the liquid sulfur, and (c) continuously separating desired final product tetraphosphorus polysulfide, in gaseous state, from such continuously circulating reaction mixture.
Claims15
Apparatus for the continuous preparation of a tetraphosphorus polysulfide, comprising a closed reactor loop, means for continuously circulating a liquid tetraphosphorus polysulfide reaction mixture in said reactor loop, means for establishing and continuously maintaining a density gradient within such continuously circulating reaction mixture, means for introducing liquid phosphorus and liquid sulfur into such continuously circulating reaction mixture, and means for continuously separating desired final product tetraphosphorus polysulfide, in gaseous state, from such continuously circulating reaction mixture, wherein said means for introducing liquid phosphorus is in fluid communication with a liquid phosphorus source and said means for introducing liquid sulfur is in fluid communication with a liquid sulfur source.
Dependencies are inferred from the claim text.