公开(公告)号：US20120245371A1

公开(公告)日：2012-09-27

申请号：US13499278

申请日：2010-09-29

申请人： Célio Ferraz Wagner Lourenco ,  Richard Macret ,  José Eduardo Cielo

发明人： Célio Ferraz Wagner Lourenco ,  Richard Macret ,  José Eduardo Cielo

IPC分类号： C11B3/04

CPC分类号： C07C29/88 ,  C07C31/225

摘要： The present invention generally concerns a treatment process for crude alkaline glycerol obtained as a by-product of transesterification reaction of natural oils and fats with lower alcohols. The present invention particularly concerns the treatment of crude alkaline glycerol obtained as a by-product of the biodiesel production from vegetable oils and animal fats using organic alkyl carboxylic acids or their aqueous solution, comprising the steps of: (a) acidification of the crude alkaline glycerol stock to pH in the range of about 4 to about 6, particularly 4 to 5, with organic alkyl carboxylic acids, in the presence of water in the range from about 5% to about 50%, particularly 15 to 30%, in weight with respect to the weight of the crude alkaline glycerol stock; (b) separating the formed free fatty acids, for instance by flotation; (c) removing the alcohol present in the acidified crude glycerol stock, for instance by distillation; (d) separating the acidic glycerol.

摘要翻译： 本发明一般涉及作为天然油和脂肪与低级醇的酯交换反应的副产物获得的粗碱性甘油的处理方法。 本发明特别涉及使用有机烷基羧酸或其水溶液处理作为来自植物油和动物脂肪的生物柴油生产副产物的粗碱性甘油，其包括以下步骤：（a）粗碱化 甘油储备液在有机烷基羧酸的约4至约6，特别是4至5的范围内，在约5％至约50％，特别是15至30％重量的水存在下， 相对于粗碱性甘油原料的重量; （b）分离形成的游离脂肪酸，例如通过浮选; （c）例如通过蒸馏除去存在于酸化粗甘油原料中的醇; （d）分离酸性甘油。