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公开(公告)号：EP0827528A1
公开(公告)日：1998-03-11
申请号：EP96913540.0
申请日：1996-05-03
发明人： AITTA, Eero , VARILA, Elias
IPC分类号： C11B13
摘要： The invention relates to a method for improving the separation of water in a tall oil preparation process which comprises: a neutralization step, in which a mixture of tall oil soap and water is neutralized with carbon dioxide; a water separation step, in which the aqeuous phase containing bicarbonate is separated from the tall oil soap; and a cooking step, in which the tall oil soap obtained from the previous step is cooked with sulfuric acid in order to form tall oil, the improvement comprising the fact that, after the neutralization with carbon dioxide but before the water separation step, the pH is adjusted with an acidically reacting substance, such as bisulfite. The invention also relates to a method for the preparation of tall oil, the method comprising the steps stated above.
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公开(公告)号：EP0827528B1
公开(公告)日：1999-06-16
申请号：EP96913540.9
申请日：1996-05-03
发明人： AITTA, Eero , VARILA, Elias
摘要： The invention relates to a method for improving the separation of water in a tall oil preparation process which comprises: a neutralization step, in which a mixture of tall oil soap and water is neutralized with carbon dioxide; a water separation step, in which the aqeuous phase containing bicarbonate is separated from the tall oil soap; and a cooking step, in which the tall oil soap obtained from the previous step is cooked with sulfuric acid in order to form tall oil, the improvement comprising the fact that, after the neutralization with carbon dioxide but before the water separation step, the pH is adjusted with an acidically reacting substance, such as bisulfite. The invention also relates to a method for the preparation of tall oil, the method comprising the steps stated above.
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公开(公告)号：EP0748366B1
公开(公告)日：1999-01-27
申请号：EP95909804.7
申请日：1995-02-28
发明人： VARILA, Elias , ROUVINEN, Tellervo
CPC分类号： C11B13/02 , C11B1/04 , C11B13/005 , Y02W30/74
摘要： The invention relates to a method for improving the separation of water in a tall oil preparation process which comprises: a neutralization stage in which a mixture of soap and water is neutralized with carbon dioxide, a water separation stage in which the aqueous phase containing bicarbonate is separated from the soap, and a cooking stage in which the soap obtained from the preceding stage is cooked with sulfuric acid to form tall oil, the improvement comprising the procedure that, after the neutralization with carbon dioxide but before the water separation stage, a second neutralization with sulfuric acid is carried out. The invention also relates to a process comprising the stages presented above for the preparation of tall oil.
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