发明名称 |
Process for extracting bitumen |
摘要 |
Bitumen extraction done using a process comprising: (a) preparing a bitumen froth comprising particulate mineral solids and hydrocarbons dispersed in aqueous lamella in the form of an emulsion; (b) adding a sufficient amount of a paraffinic solvent to the froth to induce inversion of the emulsion and precipitate asphaltenes from the resultant hydrocarbon phase; (c) mixing the froth and the solvent for a sufficient time to dissolve the solvent into the hydrocarbon phase to precipitate asphaltenes; and (d) subjecting the mixture to gravity or centrifugal separation for a sufficient period to separate substantially all of the water and solids and a substantial portion of the asphaltenes from the bitumen; wherein a separation enhancing additive is present in the process. The separation enhancing additive is a polymeric surfactant that has multiple lipophilic and hydrophilic moieties, which can effect easier handling of asphaltene sludges and less foaming during solvent recovery.
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申请公布号 |
US7357857(B2) |
申请公布日期 |
2008.04.15 |
申请号 |
US20040999024 |
申请日期 |
2004.11.29 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
HART PAUL R.;MAHARAJH EDWARD M. |
分类号 |
C10G1/04;C10G1/00 |
主分类号 |
C10G1/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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