发明授权
- 专利标题: Partially halogenated ethane solvent removal of oleophylic materials from mineral particles
- 专利标题(中): 部分卤化乙烷溶剂从矿物颗粒中除去油性物质
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申请号: US330392申请日: 1989-03-28
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公开(公告)号: US5005655A公开(公告)日: 1991-04-09
- 发明人: Olaf M. Stokke , David A. Flanigan , Robert B. Ramsey , Robert E. Williams , John Huycke
- 申请人: Olaf M. Stokke , David A. Flanigan , Robert B. Ramsey , Robert E. Williams , John Huycke
- 申请人地址: OK Ponca City
- 专利权人: Conoco Inc.
- 当前专利权人: Conoco Inc.
- 当前专利权人地址: OK Ponca City
- 主分类号: A61K38/00
- IPC分类号: A61K38/00 ; C07K1/107 ; C07K14/805 ; C07K16/00 ; C07K17/02
摘要:
1,1-dichloro-2,2,2-trifluoroethane or 1,1-dichloro-1-fluoroethane are employed as solvents to remove oleophylic material from mineral particulates. In one aspect the method of this invention includes the steps of transporting oil-based mud-laden cuttings to a solid feed tank wherein the oil-based cuttings are subjected to turbulent mixing to leave the surface of the cuttings substantially free of oil. The cuttings are then subjected to countercurrent flow of solvent in order to separate oily solvent and fines smaller than a chosen diameter from the heavier solids. The heavier solids are cleaned of any remaining oil-based muds, separated from cleaning solvent and ultimately returned to the sea environment.
公开/授权文献
- US5501280A Casing filling and circulating apparatus and method 公开/授权日:1996-03-26