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Trifluoromethanesulfonic acid production device and method

A technology of trifluoromethanesulfonic acid and production device, which is applied in separation methods, sulfonic acid preparation, sulfonate preparation and other directions, can solve the problems of low production efficiency and poor quality of trifluoromethanesulfonic acid, and achieves elimination of substandard products , the effect of improving purity, ensuring efficiency and quality

Pending Publication Date: 2021-04-20
PERIC SPECIAL GASES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Trifluoromethanesulfonic acid is currently produced with low efficiency and poor quality

Method used

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  • Trifluoromethanesulfonic acid production device and method
  • Trifluoromethanesulfonic acid production device and method
  • Trifluoromethanesulfonic acid production device and method

Examples

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Embodiment 1

[0055] Such as Figure 1-3 Shown, a kind of production device of trifluoromethanesulfonic acid comprises agitator 5, and the first potassium fluoride storage tank 1 is connected with agitator 5 upper end by first delivery pipe 4, and methanesulfonyl chloride solution storage tank 3 passes through The infusion tube 2 is connected to the upper end of the agitator 5, and potassium fluoride and methanesulfonyl chloride solutions are transported to the agitator 5 as required, and the mixed solution is heated and stirred, so that the materials can fully react.

[0056] The upper end of the agitator 5 is fixed with a connecting plate 42, and the lower end of the connecting plate 42 is rotatably connected with a rotating shaft 43, which can ensure the stability of the rotating shaft 43 well. The lower end of the rotating shaft 43 runs through the agitator 5 and extends to the outside of the agitator 5. The speed regulating mechanism is connected, and the speed regulating mechanism can...

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Abstract

The invention relates to a trifluoromethanesulfonic acid production device and method, and belongs to the technical field of organic chemical engineering. The method comprises the following steps: reacting a methanesulfonyl chloride aqueous solution with potassium fluoride to obtain a methanesulfonyl fluoride crude product, carrying out reduced pressure distillation and phase separation, carrying out reduced pressure distillation again, electrolyzing the obtained methanesulfonyl fluoride pure product and anhydrous hydrogen fluoride in an electrolyzer, cooling the electrolyzed gas, introducing the cooled gas into a sodium fluoride tower, collecting the cooled gas by using a cold trap device, carrying out hydrolysis reaction on the obtained trifluoromethanesulfonyl fluoride and a potassium hydroxide solution, carrying out extraction separation on a reaction product, and recrystallizing to obtain potassium trifluoromethanesulfonate; and carrying out acidolysis reaction on potassium trifluoromethanesulfonate and excessive concentrated sulfuric acid to obtain a trifluoromethanesulfonic acid crude product, and distilling the trifluoromethanesulfonic acid crude product to obtain purified trifluoromethanesulfonic acid. Methylsulfonyl fluoride can be rapidly prepared and purified, unqualified products generated in the preparation process can be fluorinated again, and the production efficiency and quality are effectively improved.

Description

technical field [0001] The invention relates to a production device and method of trifluoromethanesulfonic acid, belonging to the technical field of organic chemical industry. Background technique [0002] Trifluoromethanesulfonic acid belongs to chemical intermediates, organic chemical raw materials / special chemicals, and has a wide range of uses. One of its important uses is to prepare lithium trifluoromethanesulfonate. Lithium trifluoromethanesulfonate is a lithium-ion battery One of the important raw materials. [0003] In addition, as one of the superacids, trifluoromethanesulfonic acid is extremely stable to oxidation and reduction. Due to the unique properties of trifluoromethanesulfonic acid, it is used in the following fields: plastic industry, as oligomerization-polymerization catalyst; fuel industry, as A protonation catalyst; various fields of the pharmaceutical industry such as nucleosides, antibiotics, steroids, proteins, glycosides; synthesis of herbicides an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C303/02C07C303/44C07C303/32C07C309/80C07C309/06C25B3/11C25B3/28C25B9/67C25B9/60B01D3/00B01D3/10B01F7/18B01F15/00
Inventor 林坤王少波马朝选王亚峰
Owner PERIC SPECIAL GASES CO LTD
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