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US 2023/0416285 A1Published application
Method for preparing sulfonated arylphosphine
AssigneeHanwha Solutions Corporation
InventorsGyeongseon JEONG, Shinbeom LEE, Junhee HAN, Keedo HAN
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Abstract
Provided is a method of preparing sulfonated aryl phosphine, the method capable of preparing sulfonated aryl phosphine with high purity and high yield by efficiently removing sulfur trioxide generated during preparing sulfonated aryl phosphine using an extractant.
Claims21
A method of preparing sulfonated aryl phosphine, comprising:
- performing sulfonation of aryl phosphine to obtain a reaction product comprising sulfonated aryl phosphine;
- performing a first extraction by adding a water-insoluble amine-based extractant into the reaction product comprising sulfonated aryl phosphine to obtain an organic phase comprising sulfonated aryl phosphine;
- bringing the organic phase into contact with an inert gas by stripping to remove sulfur trioxide in the organic phase;
- and
- performing a secondary extraction by adding a base extractant to the organic phase from which sulfur trioxide has been removed as a result of the above step.
2 more elements
A device for preparing sulfonated aryl phosphine, comprising:
- a sulfonation reactor in which sulfonation of aryl phosphine is performed;
- an extraction reactor which is placed by being connected with the sulfonation reactor and a stripper, and performs a first extraction of the reaction product comprising sulfonated aryl phosphine introduced from the sulfonation reactor and a secondary extraction of an organic phase from which sulfur trioxide has been removed by stripping in the stripper;
- an inert gas supply unit that supplies inert gas into the stripper;
- and
- the stripper which is placed by being connected with the extraction reactor and the inert gas supply unit, and performs stripping the organic phase comprising sulfonated aryl phosphine resulting from the first extraction, which is introduced from the extraction reactor, by inert gas introduced from the inert gas supply unit, thereby removing sulfur trioxide in the organic phase.
2 more elements
Dependencies are inferred from the claim text.