Method for reducing the concentration of SO3 in a reaction mixture comprising methane sulfonic acid and SO3
AssigneeBASF SE
InventorTimo Ott
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Abstract
The present invention refers to a method for reducing SO3 concentration in a mixture comprising methane sulfonic acid and SO3, the method comprising: i. providing a mixture comprising methane sulfonic acid and SO3, ii. determining the amount of an additive necessary to reduce the concentration of SO3 in the mixture by forming a reaction product between the additive and SO3, iii. introducing said predetermined amount of the additive into the mixture; iv. optionally repeating steps ii. and iii., wherein the determination of the amount of additive necessary to reduce the concentration of SO3 in the mixture is performed by measuring conductivity and/or density of the reaction mixture.
Claims16
A method for reducing SO3 concentration in a mixture comprising methane sulfonic acid and SO3, the method comprising:
- i. providing a mixture comprising methane sulfonic acid and SO3,
- ii. measuring conductivity and/or density of the mixture,
- iii. comparing the conductivity and/or density of the mixture with a calibration curve to determine an amount of an additive that is required to reduce a selected amount of the SO3 in the mixture via reaction with the additive,
- iv. adding the amount of the additive into the mixture to react the selected amount of SO3 with the additive;
- v. optionally repeating steps ii., iii., and iv.,
- wherein the additive comprises water.
Dependencies are inferred from the claim text.