Process for the continuous recovery of free tartaric acid from raw materials containing potassium hydrogentartrate

   
   

In the process for the continuous recovery of free tartaric acid from raw materials containing potassium hydrogentartrate, the same are mixed with water and the potassium hydrogentartrate is dissolved. The process is improved in that the suspension is decanted, the clarified liquid is refiltered, the filtrate is cooled to crystallization temperature under a vacuum, the potassium hydrogentartrate crystals formed are dissolved, the solution is subject to a cation exchange, and the tartaric acid solution obtained is evaporated.

No processo para a recuperação contínua do ácido tartaric livre dos materiais crus que contêm o hydrogentartrate do potassium, o mesmos são misturados com água e o hydrogentartrate do potassium é dissolvido. O processo é melhorado que a suspensão decanted, o líquido esclarecido refiltered, o filtrate é refrigerado à temperatura da cristalização sob um vácuo, os cristais do hydrogentartrate do potassium dados forma são dissolvidos, a solução é sujeita a uma troca de cation, e a solução ácida tartaric obtida é evaporada.

 
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