Method for preparing tall oil

Details Method for preparing tall oil Method for preparing tall oil

C - Chemistry, Metallurgy

11

B

C11B 13/00 (2006.01) C11B 13/02 (2006.01)

Patent

CA 2325366

The invention relates to a method for enhancing the cooking step in tall oil preparation process comprising: a neutralization step in which soap is neutralized to form soap oil, and a cooking step in which soap oil is cooked with sulphuric acid to form tall oil, the soap oil obtained in the neutralization step being subjected to an intermediate treatment before the cooking step, the intermediate treatment comprising heating of the soap oil to release gases dissolved in and bound to the soap oil. The invention also relates to a method for preparing tall oil comprising the steps mentioned above.

L'invention concerne un procédé permettant d'améliorer l'opération de cuisson dans le procédé de préparation de tall-oil. Ce procédé comprend une étape de neutralisation dans laquelle on neutralise le savon pour former de l'huile de savon et une étape de cuisson dans laquelle on cuit l'huile de savon avec de l'acide sulfurique pour former du tall-oil, l'huile de savon obtenue dans l'étape de neutralisation étant soumise avant l'étape de cuisson à un traitement intermédiaire consistant à chauffer l'huile de savon afin de libérer les gaz dissous dans l'huile de savon et liés à cette dernière. L'invention porte en outre sur un procédé de préparation de tall-oil comprenant les opérations citées.

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