基本信息:
- 专利标题： SOLVENT EXTRACTION REFINING OF PETROLEUM PRODUCTS
- 专利标题（中）：石油产品溶剂萃取精制
- 申请号：EP02702024.7 申请日：2002-01-17
- 公开(公告)号：EP1360263A1 公开(公告)日：2003-11-12
- 发明人： The designation of the inventor has not yet been filed
- 申请人： Process Dynamics, Inc.
- 申请人地址： 700 Research Center Blvd. Fayetteville, AR 72701 US
- 专利权人： Process Dynamics, Inc.
- 当前专利权人： Process Dynamics, Inc.
- 当前专利权人地址： 700 Research Center Blvd. Fayetteville, AR 72701 US
- 代理机构： Wood, Graham
- 优先权： US765797 20010119
- 国际公布： WO02057394 20020725
- 主分类号： C10G73/02
- IPC分类号： C10G73/02 ; C10G73/06 ; C10G73/32
摘要：
A method of refining a petroleum product to remove aromatics and to separate paraffinic oils and waxes is provided. The method involves the utilization of phase equilibria wherein crystallized or solidified waxes, normally present in the pretroleum product, are used to remove oils from a liquid solvent phase containing dissolved aromatics present in the unrefined petroleum product. The wax containing the oils (26) is separated from the aromatic-containing solvent and is further processed to separate the waxes and oils (28). For petroleum products containing little, if any, wax, additional wax may be added and recycled back for further use in removing oils from the petroleum product. The method has particular application in preparing lubricant oils having a high viscosity index, where the presence of aromatics and wax can be detrimental.